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JP5158989B2 - Method for forming decorative film on molded product using transfer sheet - Google Patents

Method for forming decorative film on molded product using transfer sheet Download PDF

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JP5158989B2
JP5158989B2 JP2010133729A JP2010133729A JP5158989B2 JP 5158989 B2 JP5158989 B2 JP 5158989B2 JP 2010133729 A JP2010133729 A JP 2010133729A JP 2010133729 A JP2010133729 A JP 2010133729A JP 5158989 B2 JP5158989 B2 JP 5158989B2
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layer
sheet
transfer sheet
coating
molded product
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JP2011016353A (en
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速都 篠原
敏雄 宇賀
諭 岡内
光弘 森
光 森
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FUJICO CO., LTD.
Dainichiseika Color and Chemicals Mfg Co Ltd
Kochi Prefecture
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FUJICO CO., LTD.
Dainichiseika Color and Chemicals Mfg Co Ltd
Kochi Prefecture
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Description

本発明は、転写シートおよび当該転写シートを用いた成形品への加飾膜形成方法に関し、特に成形品を均一に加飾するための転写シートおよび転写シートを用いた成形品への加飾膜形成方法に関する。   The present invention relates to a transfer sheet and a method for forming a decorative film on a molded product using the transfer sheet, and in particular, a transfer sheet for uniformly decorating a molded product and a decorative film on a molded product using the transfer sheet. It relates to a forming method.

現在、複雑な三次元形状を有する自動車内装材のパネルやステアリングホイール、家電製品の加飾は、水圧転写法、インモールドコーティング法、3次元ラミネート成形法などにより、樹脂フィルムをラミネートして形成されている。また、コストダウンを図るため、柄転写と同時に塗膜を転写する方法も行われてきている。   Currently, interior decoration panels, steering wheels, and home appliances with complex three-dimensional shapes are decorated by laminating resin films using the hydraulic transfer method, in-mold coating method, three-dimensional laminate molding method, etc. ing. In order to reduce costs, a method of transferring a coating film simultaneously with pattern transfer has been performed.

具体的に、水圧転写方法とは、絵柄を印刷した水溶性フィルムを水面に浮かべ、基材を水中に浸漬させながら転写層に有機溶剤を散布することによって、転写層を可溶化させ、水圧によりクリヤ層と絵柄を転写させる方法であり、例えば特開2001−277905号公報(特許文献1)に記載されている方法がある。
かかる水圧転写法では、耐水性のない素材は使用できず、転写できる形状に制限があり、複雑な形状の三次元構造体には適用が難しいという問題がある。
Specifically, the hydraulic transfer method is to float a water-soluble film printed with a pattern on the surface of the water, spray the organic solvent on the transfer layer while immersing the substrate in water, solubilize the transfer layer, This is a method for transferring a clear layer and a pattern, for example, a method described in JP-A-2001-277905 (Patent Document 1).
In such a hydraulic transfer method, there is a problem that a material having no water resistance cannot be used, the shape that can be transferred is limited, and it is difficult to apply to a three-dimensional structure having a complicated shape.

真空成形転写法は、水を使用しないで模様を転写することができる方法ではあるが、絵柄を印刷した熱可塑性フィルムをプレヒート後に真空圧着させ、接着剤で貼り付け、例えば紫外線照射により絵柄を成形体に転写させる方法であり、特開2002−240202号公報(特許文献2)等に開示されている方法がある。
かかる真空成形転写方法は、電子線を照射することによって硬化させうる電磁線硬化性クリヤー層を押出機によりシート状に形成し、次いで着色剤層を設けた後、熱可塑性保護フィルム層(基材フィルム)と貼り合わせる方法であるので、非常に製造が煩雑でコストがかかるという問題があった。
The vacuum forming transfer method is a method that can transfer a pattern without using water, but a thermoplastic film on which the pattern has been printed is pre-heated and then vacuum-bonded, and then attached with an adhesive, for example, the pattern is formed by UV irradiation. There are methods disclosed in JP-A No. 2002-240202 (Patent Document 2) and the like.
In such a vacuum forming transfer method, an electromagnetic radiation curable clear layer that can be cured by irradiation with an electron beam is formed into a sheet shape by an extruder, and then a colorant layer is provided, and then a thermoplastic protective film layer (base material) is formed. Film), there is a problem that the production is very complicated and costly.

また、成形同時転写方法(インモールド方法)は、金型の中に絵柄を印刷した熱可塑性フィルムを挟み、そこに樹脂を流しこんで成形と同時に絵柄を成形体に転写させる方法であり、例えば特開2000−079796号公報(特許文献3)に開示されている方法がある。
かかる成形同時転写法では、ポリマーブレンドの設計が重要であり、硬度や耐溶剤性の性能面からクリヤ層は架橋性の高いものを使用しているので、伸び率が低く、絵柄を印刷したフィルムが複雑な3次元形状へ追従するについては不十分であった。
Further, the simultaneous molding transfer method (in-mold method) is a method in which a thermoplastic film on which a pattern is printed is sandwiched between molds, a resin is poured into the mold, and the pattern is simultaneously transferred to the molded body. There is a method disclosed in Japanese Patent Laid-Open No. 2000-079796 (Patent Document 3).
In such a simultaneous molding transfer method, the design of the polymer blend is important, and the clear layer uses a highly crosslinkable material in terms of hardness and solvent resistance. However, it was insufficient to follow a complicated three-dimensional shape.

また、一般に真空成形転写方法や成形同時転写方法においては、転写シートの加熱により、可塑性を持たせるため、転写シートは伸びるだけであり、複雑な曲面やアンダーカットがある箇所では、柄伸びが大きくなってしまい、膜厚が薄くなり、シワができる等、成形体、特に三次元成形体の裏面まできれいに加飾塗膜を形成できるものではない。   In general, in the vacuum molding transfer method and the simultaneous molding transfer method, the transfer sheet only stretches in order to give plasticity by heating the transfer sheet, and the pattern elongation is large in places with complicated curved surfaces and undercuts. Thus, the decorative coating film cannot be formed cleanly up to the back surface of the molded body, particularly the three-dimensional molded body, because the film thickness becomes thin and wrinkles are formed.

特開2001−277905号公報JP 2001-277905 A 特開2002−240202号公報JP 2002-240202 A 特開2000−079796号公報JP 2000-079796 A

本発明の目的は、成形体、特に複雑な三次元形状を有する成形体に対し優れた追従性を有するとともに、耐光性、耐傷付性、耐薬品性、耐熱性等に優れ、良好な長期耐久性を有する転写シートを提供することにある。
また、本発明の他の目的は、上記本発明の転写シートを用いて、複雑な形状やアンダーカットのある成形体、特に三次元成形品へ均一に加飾膜を施す方法を提供することである。
The object of the present invention is to have excellent followability to a molded body, particularly a molded body having a complicated three-dimensional shape, and is excellent in light resistance, scratch resistance, chemical resistance, heat resistance, etc., and good long-term durability. It is in providing the transfer sheet which has property.
Another object of the present invention is to provide a method for uniformly applying a decorative film to a molded body having a complicated shape or undercut, particularly a three-dimensional molded product, using the transfer sheet of the present invention. is there.

本発明者らは、特定の積層構造を有するシートであって、当該積層構造に含まれる塗膜層を特定の組成とすることにより、上記課題を解決できることを見出し、本発明に到達した。
即ち、本発明の転写シートは、後述する転写シートを用いた成形品への加飾膜形成方法に用いられる転写シートであって、熱可塑性エラストマー樹脂からなるガラス転移点が40℃未満の基材シート1上に離型剤層2、該離型剤層2の上に塗膜層3、該塗膜層3の上にインク層5が順次形成されており、常温時で300%以上の伸長率と100%伸張時の弾性回復率が40%以下を有し、前記塗膜層3は、塗膜成分として、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを30〜80重量%と、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを70〜20重量%とを含有し、かつ該塗膜成分100重量部に対し光重合開始剤を1〜10重量部を含有する紫外線硬化樹脂組成物からなり、電磁線照射前の塗膜層3のガラス転移点が40℃未満であることを特徴とする、転写シートである。
The present inventors have found that the above-mentioned problems can be solved by setting the coating layer contained in the laminated structure to a specific composition, which is a sheet having a specific laminated structure, and reached the present invention.
That is, the transfer sheet of the present invention is a transfer sheet used in a method for forming a decorative film on a molded product using a transfer sheet, which will be described later, and has a glass transition point of less than 40 ° C. made of a thermoplastic elastomer resin. sheet 1 release agent layer 2 on the straight, the coating layer 3 on the straight of release agent layer 2, the ink layer 5 are sequentially formed on a straight of the coating film layer 3, 300% at normal temperature The above-mentioned elongation rate and the elastic recovery rate at 100% elongation are 40% or less, and the coating film layer 3 is a urethane (meth) acrylate oligomer having two or more (meth) acryloyl groups as a coating film component. 30 to 80% by weight, 70 to 20% by weight of a polyfunctional monomer or oligomer having 3 or more (meth) acryloyl groups, and 1 to 1 photopolymerization initiator for 100 parts by weight of the coating film component UV curable resin containing 10 parts by weight It consists formed product, and a glass transition point of the coating layer 3 before the electromagnetic beam irradiation is less than 40 ° C., which is a transfer sheet.

また、本発明の他の転写シートは、熱可塑性エラストマー樹脂からなるガラス転移点が40℃未満の基材シート1上に離型剤層2、該離型剤層の上に塗膜層3、該塗膜層3の上に塗膜保護層4、該塗膜保護層4の上にインク層5が順次形成されており、常温時で300%以上の伸長率と100%伸張時の弾性回復率が40%以下を有し、前記塗膜層3は、塗膜成分として、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを30〜80重量%と、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを70〜20重量%とを含有し、かつ該塗膜成分100重量部に対し光重合開始剤を1〜10重量部を含有する紫外線硬化樹脂組成物からなり、電磁線照射前の塗膜層3のガラス転移点が40℃未満であり、前記塗膜保護層4は電磁線照射前のガラス転移点が40〜60℃で、乾燥後の伸長率が300%以上の水性ポリウレタン層からなることを特徴とする、転写シートである。
また、本発明の他の転写シートは、熱可塑性エラストマー樹脂からなるガラス転移点が40℃未満の基材シート1上に離型剤層2、該離型剤層2の上に複数層の交互に設けられた塗膜層3及び塗膜保護層4、該塗膜保護層4の上にインク層5が順次形成されており、常温時で300%以上の伸長率と100%伸張時の弾性回復率が40%以下を有し、前記塗膜層3は、塗膜成分として、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを30〜80重量%と、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを70〜20重量%とを含有し、かつ該塗膜成分100重量部に対し光重合開始剤を1〜10重量部を含有する紫外線硬化樹脂組成物からなり、電磁線照射前の塗膜層3のガラス転移点が40℃未満であり、前記塗膜保護層4は電磁線照射前のガラス転移点が40〜60℃で、乾燥後の伸長率が300%以上の水性ポリウレタン層からなることを特徴とする、転写シートである。
好適には、本発明の転写シートは、上記本発明の転写シートのインク層5の上部に、更に接着剤層6が積層されてなることを特徴とする、転写シートである。
Another transfer sheet of the present invention, a thermoplastic elastomer glass transition point made of a resin is a release agent layer 2 on the substrate sheet 1 directly below 40 ° C., the coating layer immediately above the release agent layer 3, the coating film layer 3 of the coating protective layer 4 on the straight, are formed ink layer 5 sequentially on a straight of the coating film protective layer 4, at ordinary temperature at 300% or more elongation of 100% elongation The elastic recovery rate at the time has 40% or less, and the coating layer 3 has 30 to 80% by weight of a urethane (meth) acrylate oligomer having two or more (meth) acryloyl groups as a coating component. UV curing containing 70 to 20% by weight of a polyfunctional monomer or oligomer having three or more (meth) acryloyl groups and 1 to 10 parts by weight of a photopolymerization initiator for 100 parts by weight of the coating film component It consists of a resin composition, and the glass layer 3 before the irradiation with electromagnetic radiation The transition point is less than 40 ° C., and the coating film protective layer 4 is composed of an aqueous polyurethane layer having a glass transition point of 40 to 60 ° C. before irradiation with electromagnetic radiation and an elongation rate after drying of 300% or more. This is a transfer sheet.
Another transfer sheet of the present invention, a thermoplastic elastomer glass transition point made of a resin is a release agent layer 2 on the substrate sheet 1 directly below 40 ° C., a plurality of layers on the straight of release agent layer 2 alternately coating layer 3 and the coating protective layer 4 is provided for, it is formed ink layer 5 sequentially on a straight of the coating film protective layer 4, at ordinary temperature at 300% or more elongation of 100% elongation The elastic recovery rate at the time has 40% or less, and the coating layer 3 has 30 to 80% by weight of a urethane (meth) acrylate oligomer having two or more (meth) acryloyl groups as a coating component. UV curing containing 70 to 20% by weight of a polyfunctional monomer or oligomer having three or more (meth) acryloyl groups and 1 to 10 parts by weight of a photopolymerization initiator for 100 parts by weight of the coating film component A coating film made of a resin composition before irradiation with electromagnetic radiation 3 has a glass transition point of less than 40 ° C., and the coating film protective layer 4 is composed of an aqueous polyurethane layer having a glass transition point of 40 to 60 ° C. before irradiation with electromagnetic radiation and an elongation rate after drying of 300% or more. A transfer sheet characterized by
Preferably, the transfer sheet of the present invention is a transfer sheet in which an adhesive layer 6 is further laminated on the ink layer 5 of the transfer sheet of the present invention.

また、本発明の上記転写シートを用いた成形品への加飾膜形成方法は、上記本発明の転写シートのインク層5側または接着剤層6側が成形品の表面側に面するようにして当該転写シートを伸長させた状態で密着させ、成形品の裏面側をシートを密着させた表面側より負圧にして該シートを該成形品に密着させ、次いで加熱することにより該シートを該成形体に加熱圧着させ、次いで電磁線を照射することにより塗膜層3を硬化させ、その後基材シート1を剥がすことを特徴とする、転写シートを用いた成形品への加飾膜形成方法である。   Moreover, the method for forming a decorative film on a molded product using the transfer sheet of the present invention is such that the ink layer 5 side or the adhesive layer 6 side of the transfer sheet of the present invention faces the surface side of the molded product. The transfer sheet is brought into close contact with the stretched sheet, the back side of the molded product is brought into a negative pressure from the surface side where the sheet is brought into close contact, the sheet is brought into close contact with the molded product, and then the sheet is formed by heating. A method for forming a decorative film on a molded product using a transfer sheet, characterized in that the coating layer 3 is cured by thermocompression bonding to the body, followed by irradiation with electromagnetic radiation, and then the base sheet 1 is peeled off. is there.

本発明の転写シートは、成形体、特に複雑な三次元形状を有する成形体に対し優れた追従性を有するとともに、耐光性、耐傷付性、耐薬品性、耐熱性等に優れ、良好な長期耐久性を有することができる。
特に塗膜保護層を設けた転写シートは、三次元成形品製造における塗装工程が省略され、塗装コストが削減されるだけでなく、VOC及び塗料ミストを大幅に削減できる。
また、本発明の転写シートを用いた成形品への加飾膜形成方法は、成形体へ均一に加飾膜を施すことができ、複雑な形状やアンダーカットのある成形品、特に三次元成形品へ均一に加飾膜を施すことが可能となる。更に、上記効果に加えて、極めて複雑な形状やアンダーカットのある三次元成形品へも、容易に、また均一に加飾膜を施すことが可能となる。
The transfer sheet of the present invention has excellent followability to a molded product, particularly a molded product having a complicated three-dimensional shape, and is excellent in light resistance, scratch resistance, chemical resistance, heat resistance, etc. It can have durability.
In particular, the transfer sheet provided with the coating film protective layer eliminates the coating process in the production of the three-dimensional molded product, and not only reduces the coating cost, but also greatly reduces VOC and paint mist.
In addition, the method for forming a decorative film on a molded article using the transfer sheet of the present invention can uniformly apply a decorative film to a molded article, and is particularly a three-dimensional molded article having a complicated shape or undercut. A decorative film can be uniformly applied to the product. Furthermore, in addition to the above effects, a decorative film can be easily and uniformly applied to a three-dimensional molded product having an extremely complicated shape or undercut.

本発明の一例の転写シートの断面を模式的に示す図である。It is a figure which shows typically the cross section of the transfer sheet of an example of this invention. 本発明の転写シートを自動車用スウィッチパネルに転写した加飾済み成形品の一例の写真である。3 is a photograph of an example of a decorated molded product in which the transfer sheet of the present invention is transferred to an automotive switch panel. 従来の転写方法を用いて自動車用スウィッチパネルに転写した加飾済み成形品の一例の写真である。It is a photograph of an example of the decorated molded product transferred to the automotive switch panel using a conventional transfer method.

以下、本発明の好適例を図面に基づいて説明する。
図1は、本発明の転写用シートの断面図を模式的に示したものである。
本発明の転写シートは、図1(a)に示すように、熱可塑性エラストマー樹脂からなる基材シート1上に、離型剤層2、塗膜層3及び柄インク層5が順次形成されて積層されてなり、該転写シートが常温時(10〜40℃)で300%以上の伸長率と100%伸張時の弾性回復率が40%以下となるものである。
Preferred embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 schematically shows a cross-sectional view of the transfer sheet of the present invention.
In the transfer sheet of the present invention, as shown in FIG. 1A, a release agent layer 2, a coating layer 3 and a pattern ink layer 5 are sequentially formed on a base sheet 1 made of a thermoplastic elastomer resin. The transfer sheets are laminated, and the transfer sheet has an elongation rate of 300% or more at normal temperature (10 to 40 ° C.) and an elastic recovery rate of 100% or less at 100% elongation.

ここで、本発明において、伸長率及び弾性回復率は、以下のものである。
(伸長率(%))
精密万能材料試験機(AG−50Knisd:島津製作所製)を用い、引っ張り速度100mm/分、チャック間距離 50mm、試験材寸法 10mm×100mmで3体の下記式で求めた値の平均値で示す。
伸び率(%)=引張変位(mm)/チャック間長(mm)×100
(弾性回復率(%))
弾性回復率(%)=[(I−I)/I]×100
Iは、室温(25℃)下でシートを500mm/sec.の速度で、所定の長さまで伸張し、その後500mm/sec.の速度で収縮させて歪みを解放したときの長さ
は、初期長さ
Here, in the present invention, the elongation rate and the elastic recovery rate are as follows.
(Elongation(%))
Using a precision universal material testing machine (AG-50Knisd: manufactured by Shimadzu Corporation), the average value of the values obtained by the following formulas of three bodies at a pulling speed of 100 mm / min, a distance between chucks of 50 mm, and a test material size of 10 mm × 100 mm is shown.
Elongation (%) = tensile displacement (mm) / chuck length (mm) × 100
(Elastic recovery rate (%))
Elastic recovery rate (%) = [(I−I 0 ) / I 0 ] × 100
I is 500 mm / sec. Of the sheet at room temperature (25 ° C.). Is stretched to a predetermined length at a speed of 500 mm / sec. The length I 0 when the strain is released by contracting at a speed of is the initial length

本発明の転写シートを構成する熱可塑性エラストマー樹脂からなる基材シート1は、上記したように常温時においても伸縮性の高い熱可塑性エラストマーシートを基材シートとして使用することが好ましく、例えば、高伸縮性のウレタン系やポリエステル系、スチレン系、塩化ビニル系、ポリアミド系、フッ素系などの熱可塑性エラストマー樹脂を用いることが可能である。
かかる基材シートの厚みは特に限定されないが、例えば30〜100μmであることが取り扱いやすさの点から好ましい。
As described above, the base sheet 1 made of the thermoplastic elastomer resin constituting the transfer sheet of the present invention preferably uses a thermoplastic elastomer sheet having high stretchability even at room temperature as the base sheet. It is possible to use a thermoplastic elastomer resin such as stretchable urethane, polyester, styrene, vinyl chloride, polyamide, or fluorine.
Although the thickness of this base material sheet is not specifically limited, For example, it is preferable from the point of the ease of handling that it is 30-100 micrometers.

当該基材シートは、熱可塑性エラストマー樹脂であれば特に限定されないが、例えばウレタンエラストマーシートが好適に使用できる。
かかる基材シートは、転写時の加熱で溶融せず、常温で真空成形等される際、局部的な伸延に対して、耐屈曲性や引き裂き性に優れた耐性を有するものであり、例えば、ウレタンエラストマーシートとしては、日本マタイ株式会社製の「エスマーURS」、大倉工業株式会社製の「Hi−fas」等が例示できる。
かかる基材シートのガラス転移点(Tg)は、40℃未満、好ましくは20℃未満であることが転写時における基材シートの前加熱を必要としないという点から望ましい。
Although the said base material sheet will not be specifically limited if it is a thermoplastic elastomer resin, For example, a urethane elastomer sheet can be used conveniently.
Such a base sheet does not melt by heating at the time of transfer, and has excellent resistance to bending or tearing against local stretching when being vacuum formed at room temperature, for example, Examples of the urethane elastomer sheet include “Esmer URS” manufactured by Nippon Matai Co., Ltd. and “Hi-fas” manufactured by Okura Industrial Co., Ltd.
The glass transition point (Tg) of such a substrate sheet is desirably less than 40 ° C., preferably less than 20 ° C., from the point that preheating of the substrate sheet during transfer is not required.

当該基材シート1上に設けられた離型剤層2は、上記基材シート1と塗膜層3との間に設けられる。この離型剤層2は、基材シート1の表面エネルギーを低くして剥離しやすくする。
かかる離型層に用いる離型剤は、アクリル系樹脂、メラミン系樹脂、ビニル系樹脂、ポリウレタン樹脂、シリコン樹脂などを単独又はポリマーブレンドして使用できる。
離型剤層は、原料樹脂を有機溶媒で希釈して、ロールコーターで上記基材シート表面に塗布されることにより設けることができる。塗布した後、加熱乾燥して基材シート1の表面に離型剤層2が積層される。ただし、離型剤層は、有機溶媒で希釈された原料樹脂を、基材シートの表面にグラビア塗工して設けることもできる。
The release agent layer 2 provided on the base sheet 1 is provided between the base sheet 1 and the coating layer 3. This release agent layer 2 makes the surface energy of the base sheet 1 low to facilitate peeling.
As the release agent used for such a release layer, an acrylic resin, a melamine resin, a vinyl resin, a polyurethane resin, a silicon resin, or the like can be used alone or in a polymer blend.
The release agent layer can be provided by diluting the raw material resin with an organic solvent and coating the surface of the base sheet with a roll coater. After the application, the release agent layer 2 is laminated on the surface of the base sheet 1 by heating and drying. However, the release agent layer can also be provided by subjecting a raw material resin diluted with an organic solvent to gravure coating on the surface of the substrate sheet.

更に、本発明の転写シートにおいては、前記離型剤層2の上に、塗膜層3が積層されている。
該塗膜層3は、塗膜成分として、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを30〜80重量%と、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを70〜20重量%とを含有し、かつ該塗膜成分100重量部に対し光重合開始剤を1〜10重量部を含有する紫外線硬化樹脂組成物からなるものである。
かかる塗膜層の厚みは特に限定されないが、例えば5〜50μmであることが取り扱いやすさの点から好ましい。
Furthermore, in the transfer sheet of the present invention, the coating layer 3 is laminated on the release agent layer 2.
The coating layer 3 is a polyfunctional monomer having 30 to 80% by weight of a urethane (meth) acrylate oligomer having two or more (meth) acryloyl groups and three or more (meth) acryloyl groups as a coating film component. It comprises an ultraviolet curable resin composition containing 70 to 20% by weight of an oligomer and 1 to 10 parts by weight of a photopolymerization initiator with respect to 100 parts by weight of the coating film component.
Although the thickness of this coating film layer is not specifically limited, For example, it is preferable from the point of the ease of handling that it is 5-50 micrometers.

塗膜層には、転写前の転写シートの伸び率を保証しながら、転写後は硬さや耐摩耗性等の性能を満たすようにするため、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーと(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを用いる。
当該ポリマーを用いた塗膜層は、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーの特性によりほとんど粘着性を有さなくなる。また、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーは、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーの可塑化剤として機能し、ガラス転移点を低下させ、10〜40℃の常温時において伸長したときだけでなく、基材シートがもとに戻った時にも破断や割れない塗膜を形成できる。
このため、本発明の転写シートを用いて、三次元成形体に加飾する際に、後述する真空吸着させる工程においても、例えば、アンダーカットのある複雑な形状の成形品にも転写シートが該成形品の形状に追従が可能となる。
Polyfunctional monomer having 3 or more (meth) acryloyl groups in the coating layer in order to satisfy the performance such as hardness and wear resistance after transfer while ensuring the elongation rate of the transfer sheet before transfer. Alternatively, a urethane (meth) acrylate oligomer having two or more oligomers and (meth) acryloyl groups is used.
The coating layer using the polymer has almost no tackiness due to the characteristics of a urethane (meth) acrylate oligomer having two or more (meth) acryloyl groups. Moreover, the polyfunctional monomer or oligomer having 3 or more (meth) acryloyl groups functions as a plasticizer for urethane (meth) acrylate oligomer having 2 or more (meth) acryloyl groups, and lowers the glass transition point. It is possible to form a coating film that is not broken or broken not only when it is stretched at a normal temperature of 10 to 40 ° C. but also when the base sheet is restored.
For this reason, when decorating a three-dimensional molded article using the transfer sheet of the present invention, the transfer sheet is also applied to a molded article having a complicated shape with an undercut, for example, in the step of vacuum adsorption described later. It is possible to follow the shape of the molded product.

転写後は紫外線等の電磁線を照射することによって、該塗膜層は3次元網目構造を有する強固なポリマーとなり、得られる転写シートを用いて三次元成形体に加飾した際の加飾膜の硬度や耐摩耗性などの種々の性能を満たすことが可能になる。   After the transfer, the coating layer becomes a strong polymer having a three-dimensional network structure by irradiating electromagnetic rays such as ultraviolet rays, and the decorative film when decorating the three-dimensional molded body using the obtained transfer sheet It is possible to satisfy various performances such as hardness and wear resistance.

塗膜層は、塗膜成分として、上記(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを30〜80重量%、好適には45〜65重量%と、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを70〜20重量%、好適には35〜55重量%とを含有し、かつ該塗膜成分100重量部に対し光重合開始剤を1〜10重量部を含有する紫外線硬化組成物からなる。
上記(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーと、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーとが上記割合で含有されることにより、ガラス転移点が低下し、紫外線硬化前においては複雑な三次元形状を有する成形体に対し優れた追従性を有するとともに、紫外線硬化後は耐光性、耐傷付性、耐衝撃性、耐熱性、耐薬品性等に優れ、良好な長期耐久性を有することができるという利点を有する。
The coating layer has 30 to 80% by weight, preferably 45 to 65% by weight of a urethane (meth) acrylate oligomer having two or more (meth) acryloyl groups as a coating film component, and a (meth) acryloyl group. 70 to 20% by weight, preferably 35 to 55% by weight of a polyfunctional monomer or oligomer having 3 or more, and 1 to 10 parts by weight of a photopolymerization initiator with respect to 100 parts by weight of the coating film component It consists of an ultraviolet curable composition to contain.
When the urethane (meth) acrylate oligomer having two or more (meth) acryloyl groups and the polyfunctional monomer or oligomer having three or more (meth) acryloyl groups are contained in the above ratio, the glass transition point is lowered. In addition, it has excellent followability for molded products with complex three-dimensional shapes before UV curing, and also has excellent light resistance, scratch resistance, impact resistance, heat resistance, chemical resistance, etc. after UV curing. , Has the advantage of having good long-term durability.

また、該塗膜層3には、塗膜成分100重量部に対し光重合開始剤を1〜10重量部が含有される。
光重合開始剤としては、ベンゾフェノン系、アセトフェノン系、チオキサントン系、アミン系、アシルフォスフィンオキサイド系などを例示することができ、その配合割合が上記範囲を超えても、得られる効果は特に変わらず、経済的に上記範囲が適切である。
また電磁線照射前の塗膜層のガラス転移点(Tg)は、40℃未満であることが望ましい。これは基材シートとして用いる熱可塑性エラストマーの常温時での高い伸縮性を活かし、転写時における基材シートの前加熱を省略でき、アンダーカットのあるような形状に対し、柄伸びが抑制できるという点から望ましい。
The coating layer 3 contains 1 to 10 parts by weight of a photopolymerization initiator with respect to 100 parts by weight of the coating film component.
Examples of the photopolymerization initiator include benzophenone-based, acetophenone-based, thioxanthone-based, amine-based, and acylphosphine oxide-based ones. Even when the blending ratio exceeds the above range, the obtained effect is not particularly changed. The above range is economically appropriate.
Further, it is desirable that the glass transition point (Tg) of the coating layer before irradiation with electromagnetic radiation is less than 40 ° C. This makes use of the high stretchability at room temperature of the thermoplastic elastomer used as the base sheet, can omit the preheating of the base sheet at the time of transfer, and can suppress the pattern elongation for shapes with undercuts. Desirable in terms.

得られる加飾膜に硬度が要求される場合には、メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーリッチで、伸び率が求められる場合には(メタ)アクリロイル基を2個以上有し、ウレタン(メタ)アクリレートオリゴマーを、上記範囲内で多く含有するようにする。
(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを多く含む場合には、粘着性が残る場合があるため、好適には、紫外線硬化型の水性ポリウレタンエマルジョンを塗布して、塗膜層3とインク層5の間に水性ポリウレタン塗膜保護層4として積層する(図1(b))。
これは(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーと(メタ)アクリロイル基を2個以上有し、ウレタン(メタ)アクリレートオリゴマーを有する組成物が耐溶剤性を持たないためで、粘着性を押さえる保護と次に塗布する柄インキの耐溶剤保護層としての役目を有する。
かかる塗膜保護層4の厚みは特に限定されないが、例えば2〜5μmであることが取り扱いやすさの点から好ましい。
When the obtained decorative film is required to have hardness, it is rich in polyfunctional monomer or oligomer having 3 or more meth) acryloyl groups, and when elongation is required, it has 2 or more (meth) acryloyl groups. In addition, a large amount of urethane (meth) acrylate oligomer is contained within the above range.
When many polyfunctional monomers or oligomers having 3 or more (meth) acryloyl groups are contained, the adhesiveness may remain. Therefore, it is preferable to apply a UV-curable aqueous polyurethane emulsion and coat the coating layer. 3 and an ink layer 5 are laminated as an aqueous polyurethane coating film protective layer 4 (FIG. 1B).
This is because a composition having a polyfunctional monomer or oligomer having three or more (meth) acryloyl groups and two or more (meth) acryloyl groups and having a urethane (meth) acrylate oligomer does not have solvent resistance. It serves as a solvent that protects the tackiness and as a solvent-resistant protective layer for the pattern ink to be applied next.
Although the thickness of this coating-film protective layer 4 is not specifically limited, For example, it is preferable from the point of handleability that it is 2-5 micrometers.

該塗膜保護層4は、水性ポリウレタン層からなり、該水性ポリウレタン層は、乾燥後の伸長率が300%以上であることが、転写時にアンダーカットのある形状のものについても追従性が良好な点から望ましい。ここで乾燥とは、60℃で30分乾燥させた後の状態を表す。
更に、塗膜保護層のガラス転移点(Tg)は、電磁性照射前、40℃から60℃あることがインク層5の印刷適性付与の点から望ましい。
好適には、上記塗膜層3と塗膜保護層4とが交互に複数層設けられていることが望ましく、これは適正膜厚まで複数に分けることで、塗膜層に残留する溶剤を最小限まで排除でき、残留溶剤による塗膜層の粘着性を押さえられるためである。
該塗膜保護層4は、水性ポリウレタンエマルジョンを用いて設けることができる。
The coating film protective layer 4 is composed of an aqueous polyurethane layer, and the aqueous polyurethane layer has an elongation rate of 300% or more after drying. Desirable in terms. Here, “dry” represents a state after drying at 60 ° C. for 30 minutes.
Furthermore, the glass transition point (Tg) of the coating film protective layer is preferably 40 ° C. to 60 ° C. before electromagnetic irradiation from the viewpoint of imparting printability of the ink layer 5.
Preferably, it is desirable that the coating layer 3 and the coating protective layer 4 are alternately provided in a plurality of layers. By dividing the coating layer into a plurality of layers up to an appropriate film thickness, the solvent remaining in the coating layer is minimized. This is because it can be eliminated to the limit and the adhesiveness of the coating layer due to the residual solvent can be suppressed.
The coating film protective layer 4 can be provided using an aqueous polyurethane emulsion.

次いで、塗膜層3または必要に応じて設けられた塗膜保護層4の上に、柄インク層5を積層する。
インク層5は、特に特定されないが、熱可塑性ポリウレタン樹脂又は熱可塑性アクリル樹脂、塩化ビニル・酢酸ビニル共重合樹脂などを単独又はポリマーブレンドしたものを使用することができる。耐候性に優れていると共に転写時の加熱(80〜120℃)でインク表層が溶融する性能を有し、溶融することにより、被転写体に転写することも可能である。印刷方法はオフセット印刷、グラビア印刷、スクリーン印刷などどのような方法を用いてもかまわない。
かかるインク層5の厚みは特に限定されないが、例えば3〜5μmであることが取り扱いやすさの点から好ましい。
Subsequently, the pattern ink layer 5 is laminated | stacked on the coating-film layer 3 or the coating-film protective layer 4 provided as needed.
Although the ink layer 5 is not particularly specified, a thermoplastic polyurethane resin or a thermoplastic acrylic resin, a vinyl chloride / vinyl acetate copolymer resin or the like may be used alone or in a polymer blend. In addition to excellent weather resistance, the ink surface layer melts when heated during transfer (80 to 120 ° C.), and can be transferred to a transfer medium by melting. Any printing method such as offset printing, gravure printing, or screen printing may be used.
The thickness of the ink layer 5 is not particularly limited, but is preferably 3 to 5 μm, for example, from the viewpoint of ease of handling.

このようにして得られた本発明の転写シートは、常温時(10〜40℃、例えば25℃)での伸長率が300%以上、好ましくは600%以上で、かつ100%伸長時の弾性回復率が40%以下、好ましくは30%以下である。
かかる範囲の伸長率及び弾性回復率を有すると、アンダーカットのある形状のものであっても、転写時にシワを形成することがない。
The transfer sheet of the present invention thus obtained has an elastic recovery at a normal temperature (10 to 40 ° C., for example, 25 ° C.) of an elongation percentage of 300% or more, preferably 600% or more and 100% elongation. The rate is 40% or less, preferably 30% or less.
When the elongation rate and the elastic recovery rate are within such ranges, even if the shape has an undercut, wrinkles are not formed during transfer.

図1においては、好適な転写シートの例として、上記インク層5の表面に接着剤層6が設けられている。
かかる接着剤層6は、被転写体である三次元成形体の表面に塗布して設けることもできる。接着剤層6は、加熱されて接着力を発現してインク層を三次元成形体の表面に付着させる。したがって、この接着剤層6には、例えば熱賦括型のアクリル系接着剤やエポキシ系接着剤、ホットメルト系接着剤が使用できる。
かかる接着剤層をシートに設けることにより、転写する素材によって接着剤を選択することができるため、転写素材を制限することがないという利点を有する。
In FIG. 1, as an example of a suitable transfer sheet, an adhesive layer 6 is provided on the surface of the ink layer 5.
Such an adhesive layer 6 can also be provided by being applied to the surface of a three-dimensional molded body that is a transfer target. The adhesive layer 6 is heated to develop an adhesive force, and causes the ink layer to adhere to the surface of the three-dimensional molded body. Therefore, for this adhesive layer 6, for example, a heat-encapsulating acrylic adhesive, an epoxy adhesive, or a hot melt adhesive can be used.
By providing such an adhesive layer on the sheet, the adhesive can be selected depending on the material to be transferred, so that there is an advantage that the transfer material is not limited.

本発明の転写シートを用いた成形体への加飾転写方法は、上記本発明の転写シートのインク層5側または接着剤層6側が成形品の表面側に面するようにして当該転写シートを伸長させた状態で密着させ、成形品の裏面側をシートを密着させた表面側より負圧にして該シートを該成形品に密着させ、次いで加熱することにより該シートを該成形体に加熱圧着させ、次いで電磁線を照射することにより塗膜層3を硬化させ、その後基材シート1を剥がすことにより、転写シートを用いた成形品への加飾膜を形成することができる。
前記成形品への加飾膜形成方法において、当該転写シートを伸長させた状態で密着させるにあたり、成形品の表面側に転写シートを伸長させた状態で密着させ、成形品の裏面側をシートを密着させた表面側より負圧にして該シートを該成形品に密着させる、真空成形法を用いることができる。その際、該シートは、成形品の裏側まで一部又は全面密着させることが好ましい。
本発明の転写シートは、常温での伸縮性が高い基材シートを使用するため、転写前作業として転写シートの加熱軟化を行わなくても、十分に転写素材に密着することができる。
In the decorative transfer method to a molded body using the transfer sheet of the present invention, the transfer sheet is transferred so that the ink layer 5 side or the adhesive layer 6 side of the transfer sheet of the present invention faces the surface side of the molded product. The sheet is adhered in the stretched state, the back side of the molded product is made negative pressure from the surface side where the sheet is adhered, the sheet is adhered to the molded product, and then the sheet is heated and pressure-bonded to the molded product by heating. Next, the coating film layer 3 is cured by irradiating electromagnetic radiation, and then the base sheet 1 is peeled off, thereby forming a decorative film on the molded product using the transfer sheet.
In the method of forming a decorative film on the molded product, when the transfer sheet is brought into close contact with the stretched state, the transfer sheet is brought into close contact with the front side of the molded product, and the back side of the molded product is attached to the back side of the molded product. A vacuum forming method can be used in which the sheet is brought into close contact with the molded article by applying a negative pressure from the close surface side. In that case, it is preferable that the sheet is partly or entirely adhered to the back side of the molded product.
Since the transfer sheet of the present invention uses a base sheet having high elasticity at room temperature, it can be sufficiently adhered to the transfer material without heating and softening the transfer sheet as a pre-transfer operation.

具体的には、上記本発明の転写シートを用い、該転写シートの柄インク層側5または接着剤層6が成形品に面するようにして転写シートを弾性的に伸張させ、前記したように成形品に裏面まで密着させた後、加熱圧着する転写工程と、電磁線を照射することによって前記転写シートの塗膜層3を硬化させる工程とを含むものである。
本発明の転写シートは、基材シート1に、離型剤層2、塗膜層3、インク層5、必要に応じて設けられる、接着剤層6、塗膜保護層4を、グラビア印刷やスクリーン印刷、ロールコーター、ダイコータ、スプレーコータ等の方法により積層して、形成される。
必要に応じて、各層を構成する成分は、トルエン、酢酸エチル、メチルエチルケトン、イソプロピルアルコール、メチルイソブチルケトン等の溶剤に当該成分を溶解させて、グラビア印刷等により積層する。
前記転写シートを成形品に密着させて転写する方法は、インモールド成形、真空成形、ブロー成形、およびオーバーレイ真空成形などを用いて行うことができる。
この際の減圧は、可能な限り短時間に真空に近い状態(例えば9kPa以下)にまで減圧できれば、より密着性が増す。また、減圧後、加熱状態で加圧(0.5〜0.9MPa)を行えばさらに転写シートの成形品への密着性が安定する。
Specifically, using the transfer sheet of the present invention, the transfer sheet is elastically stretched so that the pattern ink layer side 5 or the adhesive layer 6 of the transfer sheet faces the molded product, as described above. The method includes a transfer step in which the molded product is brought into close contact with the back surface and then heat-pressed and a step in which the coating layer 3 of the transfer sheet is cured by irradiation with electromagnetic radiation.
In the transfer sheet of the present invention, a release agent layer 2, a coating film layer 3, an ink layer 5, and an adhesive layer 6 and a coating film protective layer 4 provided on the base sheet 1 as needed, It is formed by laminating by a method such as screen printing, roll coater, die coater, spray coater or the like.
If necessary, the components constituting each layer are laminated by gravure printing or the like by dissolving the components in a solvent such as toluene, ethyl acetate, methyl ethyl ketone, isopropyl alcohol, or methyl isobutyl ketone.
The method of transferring the transfer sheet by closely contacting the molded product can be performed using in-mold molding, vacuum molding, blow molding, overlay vacuum molding, or the like.
If the pressure reduction at this time can be reduced to a state close to a vacuum (for example, 9 kPa or less) in as short a time as possible, the adhesion is further increased. Further, if pressure is applied (0.5 to 0.9 MPa) in a heated state after decompression, the adhesion of the transfer sheet to the molded product is further stabilized.

更に、上記転写工程での加熱は、インク層5、または必要に応じて設けられた接着剤層6が、熱可塑化する温度まで達するように行う。例えば、インク層が末端イソシアネートを有さない熱可塑性のポリウレタン樹脂(いわゆるウレタンエラストマー)と塩化ビニル・酢酸ビニル共重合樹脂とからなるインク層の場合には、70〜90℃の温度である。
加熱方法はセラミックヒータや遠赤外線加熱、ホットエアーなど、短時間で目標温度まで正確に上昇できればどのような方法でも良い。特に好適には、例えば60℃〜100℃、好ましくは70℃〜90℃である。
前記転写工程後、必要に応じて、ウレタンエラストマーシート層1の上から紫外線等の電磁線を照射する場合とウレタンエラストマーシート層1を塗膜層3から剥離して電磁線を照射する場合があるが、いずれの方法でもよい。
これにより、塗膜層3、必要に応じて設けられた塗膜保護層4、インク層5、必要に応じて設けられた接着剤層6が一体化した塗膜が形成された成形品、特に三次元成型品を得ることができる。
Further, the heating in the transfer step is performed so that the ink layer 5 or the adhesive layer 6 provided as necessary reaches a temperature at which it is thermoplasticized. For example, when the ink layer is an ink layer composed of a thermoplastic polyurethane resin having no terminal isocyanate (so-called urethane elastomer) and a vinyl chloride / vinyl acetate copolymer resin, the temperature is 70 to 90 ° C.
The heating method may be any method such as ceramic heater, far-infrared heating, hot air, etc., as long as it can accurately rise to the target temperature in a short time. Particularly preferably, it is, for example, 60 ° C to 100 ° C, preferably 70 ° C to 90 ° C.
After the transfer step, if necessary, electromagnetic waves such as ultraviolet rays may be irradiated from above the urethane elastomer sheet layer 1 and electromagnetic waves may be irradiated after peeling the urethane elastomer sheet layer 1 from the coating layer 3. However, either method may be used.
Thereby, the molded article in which the coating film 3, the coating film protective layer 4 provided as necessary, the ink layer 5, and the adhesive layer 6 provided as needed are formed, particularly, A three-dimensional molded product can be obtained.

前記塗膜層3、及び必要に応じて設けられた塗膜保護層4を硬化させる工程においては、電磁線として、紫外線を用いることが好ましい。
これにより、硬度の固い膜を有することができ、耐久性に優れた、三次元加飾成形品を得ることができる。本発明の成形品は、前述の本発明の成形品転写シートを成形品に加飾して得られる。
In the step of curing the coating layer 3 and the coating layer protective layer 4 provided as necessary, it is preferable to use ultraviolet rays as electromagnetic radiation.
Thereby, it is possible to obtain a three-dimensional decorative molded product having a hard film and having excellent durability. The molded product of the present invention is obtained by decorating the molded product transfer sheet of the present invention to the molded product.

以下、本発明を次の実施例および比較例に基づき説明するが、本発明は実施例により何ら制限されるものではない。
なお、紫外線硬化性樹脂組成物の製造に用いたウレタンアクリレートオリゴマー(商品名:アートレジン UN952(固形分60%、官能基数10、重量平均分子量8000)、根上工業株式会社製)はガラス転移点が70℃で、硬化前にタックフリー(固形性維持)となる性質を有するものである。
EXAMPLES Hereinafter, although this invention is demonstrated based on the following Example and comparative example, this invention is not restrict | limited at all by an Example.
The urethane acrylate oligomer (trade name: Art Resin UN952 (solid content 60%, functional group number 10, weight average molecular weight 8000), manufactured by Negami Kogyo Co., Ltd.) used for the production of the ultraviolet curable resin composition has a glass transition point. At 70 ° C., it has the property of being tack-free (maintaining solidity) before curing.

<製造例1 紫外線硬化性樹脂組成物の製造>
ウレタンアクリレートオリゴマー(商品名:アートレジン UN952(固形分60%、官能基数10、重量平均分子量8000)、根上工業株式会社製)100重量部に6官能アクリレート(DPHA、ジペンタエリスリトールヘキサアクリレート:A−DPH,新中村化学工業株式会社製)50重量部、イルガキュア184(I−184:チバスペシャリティケミカルズ株式会社製)4.4重量部、イルガキュア819(I−189:チバスペシャリティケミカルズ株式会社製)1.1重量部、チヌビン400(Ti−400:ヒドロキシフェニルトリアジン系紫外線吸収剤、チバスペシャリティケミカルズ株式会製)2.2重量部、チヌビン123(Ti−123:ヒンダードアミン系紫外線吸収剤、チバスペシャリティケミカルズ株式会社製)0.6重量部、酢酸エチル50重量部を均一に混合して、紫外線硬化性樹脂組成物Aを得た。後述するように、60℃で5分間の溶剤乾燥後の塗膜はタックフリーな状態であった。
<Production Example 1 Production of UV Curable Resin Composition>
Urethane acrylate oligomer (trade name: Art Resin UN952 (solid content 60%, functional group number 10, weight average molecular weight 8000), Negami Kogyo Co., Ltd.) 100 parts by weight hexafunctional acrylate (DPHA, dipentaerythritol hexaacrylate: A- DPH, manufactured by Shin-Nakamura Chemical Co., Ltd.) 50 parts by weight, Irgacure 184 (I-184: manufactured by Ciba Specialty Chemicals Co., Ltd.) 4.4 parts by weight, Irgacure 819 (I-189: manufactured by Ciba Specialty Chemicals Co., Ltd.) 1 part by weight, Tinuvin 400 (Ti-400: hydroxyphenyltriazine UV absorber, manufactured by Ciba Specialty Chemicals Co., Ltd.), 2.2 parts by weight, Tinuvin 123 (Ti-123: Hindered amine UV absorber, Ciba Specialty Chemicals Co., Ltd.) 0.6 parts by weight (made by company) and 50 parts by weight of ethyl acetate were uniformly mixed to obtain an ultraviolet curable resin composition A. As will be described later, the coating film after solvent drying at 60 ° C. for 5 minutes was in a tack-free state.

<製造例2 紫外線硬化性樹脂組成物の製造>
上記製造例1における6官能アクリレート(DPHA)50重量部を、3官能アクリレート(PETIA:ペンタエリスリトールトリアクリレート(アロニックスM305)、東亞合成株式会社製)30重量部とし、イルガキュア184を3.6重量部とし、イルガキュア819を0.9重量部とし、チヌビン400を1.8重量部とし、チヌビン123を0.5重量部とした以外は、製造例1と同様にして、紫外線硬化性樹脂組成物Bを得た。後述するように、60℃で5分間の溶剤乾燥後の塗膜はタックフリーな状態であった。
<Production Example 2 Production of UV Curable Resin Composition>
50 parts by weight of hexafunctional acrylate (DPHA) in Production Example 1 is 30 parts by weight of trifunctional acrylate (PETIA: pentaerythritol triacrylate (Aronix M305), manufactured by Toagosei Co., Ltd.), and 3.6 parts by weight of Irgacure 184 is used. UV curable resin composition B in the same manner as in Production Example 1, except that Irgacure 819 is 0.9 parts by weight, Tinuvin 400 is 1.8 parts by weight, and Tinuvin 123 is 0.5 parts by weight. Got. As will be described later, the coating film after solvent drying at 60 ° C. for 5 minutes was in a tack-free state.

<製造例3 紫外線硬化性樹脂組成物の製造>
上記製造例1における6官能アクリレート(DPHA)50重量部を、6官能ウレタンアクリレート(商品名:アートレジン UN3320H(固形分100%)、根上工業株式会社製)50重量部とした以外は、製造例1と同様にして、紫外線硬化性樹脂組成物Cを得た。後述するように、60℃で5分間の溶剤乾燥後の塗膜はタックフリーな状態であった。
<Production Example 3 Production of UV Curable Resin Composition>
Production Example except that 50 parts by weight of hexafunctional acrylate (DPHA) in Production Example 1 was changed to 50 parts by weight of hexafunctional urethane acrylate (trade name: Art Resin UN3320H (solid content: 100%), manufactured by Negami Kogyo Co., Ltd.). In the same manner as in Example 1, an ultraviolet curable resin composition C was obtained. As will be described later, the coating film after solvent drying at 60 ° C. for 5 minutes was in a tack-free state.

<製造例4 紫外線硬化性樹脂組成物の製造>
上記製造例1における6官能ウレタンアクリレート(DPHA)50重量部を、6官能ウレタンアクリレート(商品名:アートレジン UN3320H(固形分100%)、ウレタンアクリレーオリゴマー、根上工業株式会社製)10重量部とし、イルガキュア184を2.8重量部とし、イルガキュア819を0.7重量部とし、チヌビン400を1.4重量部とし、チヌビン123を0.4重量部とした以外は、製造例1と同様にして、紫外線硬化性樹脂組成物Dを得た。60℃で5分間の溶剤乾燥後の塗膜はタックフリーな状態であった。
<Production Example 4 Production of UV Curable Resin Composition>
50 parts by weight of the hexafunctional urethane acrylate (DPHA) in Production Example 1 is 10 parts by weight of the hexafunctional urethane acrylate (trade name: Art Resin UN3320H (solid content 100%), urethane acrylate oligomer, manufactured by Negami Kogyo Co., Ltd.). , Except that Irgacure 184 was 2.8 parts by weight, Irgacure 819 was 0.7 parts by weight, Tinuvin 400 was 1.4 parts by weight, and Tinuvin 123 was 0.4 parts by weight. Thus, an ultraviolet curable resin composition D was obtained. The coating film after solvent drying at 60 ° C. for 5 minutes was in a tack-free state.

<製造例5 紫外線硬化性樹脂組成物の製造>
上記製造例2における3官能アクリレート(PETIA)30重量部を、2官能ウレタンアクリレートモノマー(HDDA、1,6ヘキサンジオールジアクリレート:A−HD−N、新中村化学工業株式会社製)30重量部とした以外は、製造例2と同様にして、比較用の紫外線硬化性樹脂組成物Eを得た。後述するように、60℃で5分間の溶剤乾燥後の塗膜はタックフリーな状態であった。
上記製造例1〜5の紫外線硬化性樹脂組成物を次の表1にまとめて示す。
<Production Example 5 Production of UV-curable resin composition>
30 parts by weight of trifunctional acrylate (PETIA) in Production Example 2 above is 30 parts by weight of bifunctional urethane acrylate monomer (HDDA, 1,6-hexanediol diacrylate: A-HD-N, manufactured by Shin-Nakamura Chemical Co., Ltd.) Except for having done, it carried out similarly to manufacture example 2, and obtained the ultraviolet curable resin composition E for a comparison. As will be described later, the coating film after solvent drying at 60 ° C. for 5 minutes was in a tack-free state.
The ultraviolet curable resin compositions of Production Examples 1 to 5 are summarized in Table 1 below.

Figure 0005158989
Figure 0005158989

上記製造例1〜5で製造した各紫外線硬化性樹脂組成物を用いて、下記実施例及び比較例の転写シートを製造した。
なお、転写シートの各物性は、以下の試験により求めたものである。
(シートの伸び率(%))
精密万能材料試験機(AG−50Knisd:島津製作所製)を用い、常温で、引っ張り速度100mm/分、チャック間距離 50mm、試験材寸法 10mm×100mmで下記式より3体の値を求め、その平均値で表す。
伸び率(%)=引張変位(mm)/チャック間長(mm)×100
(100%伸長時の弾性回復率)
弾性回復率(%)=[(I−I)/I]×100
Iは、室温(25℃)下でシートを500mm/sec.の速度で、所定の長さまで伸張し、その後500mm/sec.の速度で収縮させて歪みを解放したときの長さ
は、初期長さ
(鉛筆硬さ試験)
JIS K 5600−5−4に準拠して試験を行った。
(耐光試験)
JIS 5600−7−5 耐光試験方法に準拠して行った。
促進耐光試験機(キセノンロングライフフェードメーター;スガ試験器(株)製)で300MJ、キセノン光を照射し、試験前後の色彩を分光測色計(CM−3500d:ミノルタ(株)製)で測定し、試験前後の色彩変化から耐光性を評価した。なお、色彩変化ΔEは以下で求めた。
ΔE(色差)=((L− L+(a− a+(b− b1/2
Lab表色系における試験後の測定値(L,a,b)、試験前の測定値(L,a,b
(耐熱密着性試験)
JIS K 5600−5−6に準じ、100℃、1000時間加熱試験後の付着性(マス目間隔は2mm)及び縮れ・剥離・亀裂等の表面観察を目視で行った。
目視して特に剥離等がないものを○として評価した。
(ガラス転移温度)
示差走査型熱量計(DSC 3100;(株)マック・サイエンス社製,昇温速度 2℃/min)でDSC法により、ガラス転移点の測定を行った。DSC法とは、試料の温度をゆっくりと上昇または下降させながら吸熱や発熱を測定する方法である。
Using the respective ultraviolet curable resin compositions produced in Production Examples 1 to 5, transfer sheets of the following Examples and Comparative Examples were produced.
The physical properties of the transfer sheet are determined by the following tests.
(Elongation rate of sheet (%))
Using a precision universal material testing machine (AG-50Knisd: manufactured by Shimadzu Corp.), at room temperature, the pulling speed is 100 mm / min, the distance between chucks is 50 mm, and the test material size is 10 mm × 100 mm. Expressed by value.
Elongation (%) = tensile displacement (mm) / chuck length (mm) × 100
(Elastic recovery rate at 100% elongation)
Elastic recovery rate (%) = [(I−I 0 ) / I 0 ] × 100
I is 500 mm / sec. Of the sheet at room temperature (25 ° C.). Is stretched to a predetermined length at a speed of 500 mm / sec. The length I 0 when the strain is released by shrinking at a speed of is the initial length (pencil hardness test)
The test was conducted in accordance with JIS K 5600-5-4.
(Light resistance test)
It carried out based on the JIS 5600-7-5 light resistance test method.
Irradiate 300MJ xenon light with an accelerated light resistance tester (Xenon Long Life Fade Meter; manufactured by Suga Test Instruments Co., Ltd.), and measure the color before and after the test with a spectrocolorimeter (CM-3500d: manufactured by Minolta Co., Ltd.) The light resistance was evaluated from the color change before and after the test. The color change ΔE was obtained as follows.
ΔE (color difference) = ((L 1 −L 0 ) 2 + (a 1 −a 0 ) 2 + (b 1 −b 0 ) 2 ) 1/2
Measurement values after the test in the Lab color system (L 1 , a 1 , b 1 ), measurement values before the test (L 0 , a 0 , b 0 )
(Heat resistance adhesion test)
According to JIS K 5600-5-6, the adhesion after the heating test at 100 ° C. for 1000 hours (distance spacing is 2 mm) and surface observation such as shrinkage / peeling / cracking were visually observed.
A sample having no peeling or the like was visually evaluated as ○.
(Glass-transition temperature)
The glass transition point was measured by a DSC method using a differential scanning calorimeter (DSC 3100; manufactured by Mac Science Co., Ltd., heating rate 2 ° C./min). The DSC method is a method for measuring endotherm and heat generation while slowly raising or lowering the temperature of a sample.

(耐薬品性試験)
(1)耐揮発油性試験
揮発油(n−ヘプタン:n−ヘキサン=50:50)を3ml塗膜上に滴下し、20±2℃で3時間放置、水洗いした後、風乾し、しわ、ふくれ・はがれ・白化等の表面観察を行った。
(2)耐スポット性試験(耐アルカリ変色)
0.1Nの水酸化ナトリウム溶液を5ml塗膜上に滴下し、55±1℃で4時間放置、水洗いした後、風乾し、しわ、ふくれ・はがれ・白化等の表面観察を行った。
(3)耐スポット性試験(耐酸変色)
0.1Nの硫酸溶液を5ml塗膜上に滴下し、55±1℃で4時間放置、水洗いした後、風乾し、しわ、ふくれ・はがれ・白化等の表面観察を行った。
上記(1)〜(3)の全てにおいて、目視観察した結果、特に白化等がないものを○として評価した。
(Chemical resistance test)
(1) Volatile oil resistance test Volatile oil (n-heptane: n-hexane = 50: 50) is dropped onto a 3 ml coating film, left at 20 ± 2 ° C. for 3 hours, washed with water, then air-dried, wrinkled, blistered・ Surface observation such as peeling and whitening was performed.
(2) Spot resistance test (alkaline discoloration resistance)
A 0.1N sodium hydroxide solution was dropped onto a 5 ml coating film, left at 55 ± 1 ° C. for 4 hours, washed with water, air-dried, and subjected to surface observation such as wrinkling, blistering, peeling, and whitening.
(3) Spot resistance test (acid discoloration resistance)
A 0.1N sulfuric acid solution was dropped onto a 5 ml coating film, left at 55 ± 1 ° C. for 4 hours, washed with water, air-dried, and subjected to surface observation such as wrinkling, blistering / peeling / whitening.
In all of the above (1) to (3), as a result of visual observation, those that were not particularly whitened were evaluated as ◯.

[実施例1−1]
厚み50μmのポリウレタンエラストマー基材フィルム1(日本マタイ(株)製「エスマーURS」・ガラス転移温度−85℃)に、メラミン系樹脂とビニル系樹脂とを混合してなる離型剤を塗布して離型剤層2を0.1〜10μmの厚みで設けた。
次いで、上記製造例1で得た組成物Aを、乾燥膜厚が30μmとなるように、バーコーターを用いて離型剤層2の上に塗布して、60℃で5分間乾燥し、塗膜層3を形成した。前記塗膜層3のガラス転移点は9.8℃であった。
次いで、この乾燥塗膜層の上に、ポリウレタン系グラビアインク(商品名TRC−UVA;大日本インキ化学工業(株))を、乾燥膜厚が3μmとなるように、グラビア輪転試験機を用いて塗布してインク層を設け、60℃で5分間乾燥して、転写シートを得た。
得られた転写シートの伸び率は、常温で634%であった。また、100%伸長時の弾性回復率は、30%であった。
[Example 1-1]
A release agent formed by mixing a melamine resin and a vinyl resin is applied to a polyurethane elastomer base film 1 having a thickness of 50 μm (“Esmer URS” manufactured by Nippon Matai Co., Ltd., glass transition temperature of −85 ° C.). The release agent layer 2 was provided with a thickness of 0.1 to 10 μm.
Next, the composition A obtained in Production Example 1 was applied onto the release agent layer 2 using a bar coater so that the dry film thickness was 30 μm, and dried at 60 ° C. for 5 minutes. Film layer 3 was formed. The glass transition point of the coating layer 3 was 9.8 ° C.
Next, a polyurethane-based gravure ink (trade name TRC-UVA; Dainippon Ink & Chemicals, Inc.) is applied on the dried coating layer using a gravure rotary tester so that the dry film thickness is 3 μm. This was applied to provide an ink layer and dried at 60 ° C. for 5 minutes to obtain a transfer sheet.
The elongation percentage of the obtained transfer sheet was 634% at room temperature. The elastic recovery rate at 100% elongation was 30%.

次いで、得られた転写シートを用いて、ABS平板へウレタン系エナメル塗料を約20μmスプレー塗布し、80℃で30分間、加熱乾燥させた平板を用いた。
当該平板の表面側へ得られた転写シートを伸長しながらインク層側を押し当てて密着させ、該転写シートを密着させた転写シート全体を裏面側より9kPa以下の負圧にして転写シートを平板に確実に密着させ、転写装置を用い、加熱温度100℃、圧力0.6MPa、圧締時間1分で加熱転写を行った。この転写品に、UV照射装置(製品名 トスキュア1000;東芝ライテック社製)を用い、積算光量が1000mJ/cmとなるようにUV照射した。照射後、転写面の基材シートを剥がしたところ、離型性及び外観は非常に良好であった。また、完成した平板の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。
Next, using the obtained transfer sheet, a flat plate obtained by spray-applying a urethane-based enamel paint to an ABS flat plate by about 20 μm and heating and drying at 80 ° C. for 30 minutes was used.
While the obtained transfer sheet is stretched to the surface side of the flat plate, the ink layer side is pressed and brought into close contact, and the entire transfer sheet with the transfer sheet is brought into a negative pressure of 9 kPa or less from the back side, and the transfer sheet is flattened. Then, heat transfer was performed using a transfer device at a heating temperature of 100 ° C., a pressure of 0.6 MPa, and a pressing time of 1 minute. This transferred product was irradiated with UV light using a UV irradiation device (product name Toscure 1000; manufactured by Toshiba Lighting & Technology Co., Ltd.) so that the integrated light amount was 1000 mJ / cm 2 . After the irradiation, the substrate sheet on the transfer surface was peeled off, and the releasability and appearance were very good. Moreover, the coating film hardness of the finished flat plate sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.

[実施例1−2]
上記実施例1−1において、上記製造例1で得た組成物Aの代わりに、上記製造例2で得た塗膜層3組成物Bを用いた以外は、実施例1−1と同様にして、転写シートを製造した。前記塗膜層3のガラス転移点は12.4℃であった。
得られた転写シートの伸び率は、常温で566%であった。
また、100%伸長時の弾性回復率は、30%であった。
[Example 1-2]
In Example 1-1, the same procedure as in Example 1-1 was performed except that the coating layer 3 composition B obtained in Production Example 2 was used instead of the composition A obtained in Production Example 1. Thus, a transfer sheet was manufactured. The glass transition point of the coating layer 3 was 12.4 ° C.
The elongation percentage of the obtained transfer sheet was 566% at room temperature.
The elastic recovery rate at 100% elongation was 30%.

得られた転写シートを用いて、実施例1−1と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好であった。また、完成した平板の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。   Using the obtained transfer sheet, the pattern was decorated and transferred to the molded product in the same manner as in Example 1-1. After the irradiation, the substrate sheet on the transfer surface was peeled off, and the releasability and appearance were very good. Moreover, the coating film hardness of the finished flat plate sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.

[実施例1−3]
上記実施例1−1において、上記製造例1で得た組成物Aの代わりに、上記製造例3で得た塗膜層3組成物Cを用いた以外は、実施例1−1と同様にして、転写シートを製造した。前記塗膜層3のガラス転移点は−29.3℃であった。
得られた転写シートの伸び率は、常温で584%であった。
また、100%伸長時の弾性回復率は、30%であった。
[Example 1-3]
In Example 1-1, the same procedure as in Example 1-1 was performed except that the coating layer 3 composition C obtained in Production Example 3 was used instead of the composition A obtained in Production Example 1. Thus, a transfer sheet was manufactured. The glass transition point of the coating layer 3 was −29.3 ° C.
The elongation rate of the obtained transfer sheet was 584% at room temperature.
The elastic recovery rate at 100% elongation was 30%.

得られた転写シートを用いて、実施例1−1と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好であった。また、完成した平板の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。   Using the obtained transfer sheet, the pattern was decorated and transferred to the molded product in the same manner as in Example 1-1. After the irradiation, the substrate sheet on the transfer surface was peeled off, and the releasability and appearance were very good. Moreover, the coating film hardness of the finished flat plate sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.

[実施例1−4]
上記実施例1−1において、塗膜層3を設けた後、インク層を設ける前に、塗膜層の上に、塗膜保護層4としてスーパーフレックス150(乾燥後の伸長率が330%、ガラス転移温度が40℃、第一工業製薬株式会社製)を、乾燥膜厚が2μmとなるように、バーコーターをもちいて塗布し、60℃で5分間乾燥して、塗膜保護層を設けて、当該塗膜保護層の上にインク層を設けた以外は、実施例1−1と同様にして、転写シートを製造した。
得られた転写シートの伸び率は、常温で575%であった。
また、100%伸長時の弾性回復率は、30%であった。
[Example 1-4]
In Example 1-1, after providing the coating film layer 3 and before providing the ink layer, on the coating film layer, as a coating film protective layer 4, Superflex 150 (the elongation ratio after drying is 330%, A glass transition temperature of 40 ° C., manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) is applied using a bar coater so that the dry film thickness is 2 μm, and dried at 60 ° C. for 5 minutes to provide a coating film protective layer A transfer sheet was produced in the same manner as in Example 1-1 except that an ink layer was provided on the coating film protective layer.
The elongation percentage of the obtained transfer sheet was 575% at room temperature.
The elastic recovery rate at 100% elongation was 30%.

得られた転写シートを用いて、実施例1−1と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好であった。また、完成した平板の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。   Using the obtained transfer sheet, the pattern was decorated and transferred to the molded product in the same manner as in Example 1-1. After the irradiation, the substrate sheet on the transfer surface was peeled off, and the releasability and appearance were very good. Moreover, the coating film hardness of the finished flat plate sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.

[比較例1−1]
上記実施例1−1において、上記製造例1で得た塗膜層3組成物Aの代わりに、上記製造例4で得た塗膜層3組成物Dを用いて膜厚を5μmとした以外は、実施例1−1と同様にして、転写シートを製造した。前記塗膜層3のガラス転移点は6.4℃であった。
得られた転写シートの伸び率は、常温で88%であった。
また、100%伸長時の弾性回復率は、30%であった。
[Comparative Example 1-1]
In Example 1-1, instead of the coating layer 3 composition A obtained in Production Example 1, the coating layer 3 composition D obtained in Production Example 4 was used, and the film thickness was changed to 5 μm. Produced a transfer sheet in the same manner as in Example 1-1. The glass transition point of the coating layer 3 was 6.4 ° C.
The elongation percentage of the obtained transfer sheet was 88% at room temperature.
The elastic recovery rate at 100% elongation was 30%.

得られた転写シートを用いて、ABS平板の代わりに、自動車用センターパネル(ABS)を用いた以外は、実施例1−1と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、転写シートの伸び率が悪いため、伸び率が高い開口部の深い立面や側面部に、塗膜の割れが発生した。その結果を表2に示す。   Using the obtained transfer sheet, a pattern was decorated and transferred in the same manner as in Example 1-1 except that an automobile center panel (ABS) was used instead of the ABS flat plate. After the irradiation, the substrate sheet on the transfer surface was peeled off. As a result, the elongation of the transfer sheet was poor, and cracking of the coating film occurred on the deep vertical surfaces and side portions of the opening having a high elongation. The results are shown in Table 2.

[比較例1−2]
上記実施例1−1において、上記製造例1で得た塗膜層3組成物Aの代わりに、上記製造例5で得た塗膜層3組成物Eを用いた以外は、実施例1−1と同様にして、転写シートを製造した。前記塗膜層3のガラス転移点は9.4℃であった。
得られた転写シートの伸び率は、常温で604%であった。
また、100%伸長時の弾性回復率は、30%であった。
[Comparative Example 1-2]
In Example 1-1, Example 1- 1 except that the coating layer 3 composition E obtained in Production Example 5 was used instead of the coating layer 3 composition A obtained in Production Example 1. In the same manner as in Example 1, a transfer sheet was produced. The glass transition point of the coating layer 3 was 9.4 ° C.
The elongation percentage of the obtained transfer sheet was 604% at room temperature.
The elastic recovery rate at 100% elongation was 30%.

得られた転写シートを用いて、実施例1−1と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は良好であったが、完成した平板の塗膜硬さはBで、塗膜の硬度が劣っていることがわかった。その結果を表2に示す。   Using the obtained transfer sheet, the pattern was decorated and transferred to the molded product in the same manner as in Example 1-1. After the irradiation, when the base sheet of the transfer surface was peeled off, the release property and appearance were good, but the finished flat plate had a coating film hardness of B and the coating film hardness was inferior. It was. The results are shown in Table 2.

[実施例2]
上記実施例1−1において、塗膜層の乾燥膜厚を6〜8μmとなるように塗布し、更に、塗膜層3を設けた後、インク層を設ける前に、塗膜層の上に、塗膜保護層4としてスーパーフレックス150(乾燥後の伸長率が330%、ガラス転移温度が40℃、第一工業製薬株式会社製)を、乾燥膜厚が2μmとなるように、バーコーターをもちいて塗布し、60℃で5分間乾燥して、塗膜保護層を設け、更に、塗膜層と塗膜保護層とを設ける工程を3回繰り返し、複数層設けられた塗膜層及び塗膜保護層の乾燥膜厚の合計膜厚が30μmとして、その上にインク層を設けた以外は、実施例1−1と同様にして、転写シートを製造した。
得られた転写シートの伸び率は、常温で604%であった。
また、100%伸長時の弾性回復率は、30%であった。
[Example 2]
In Example 1-1, after the coating film layer was applied to a dry film thickness of 6 to 8 μm, and further after the coating film layer 3 was provided, before the ink layer was provided, on the coating film layer As a coating film protective layer 4, superflex 150 (extension rate after drying is 330%, glass transition temperature is 40 ° C., manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and a bar coater is used so that the dry film thickness is 2 μm. Apply and dry at 60 ° C. for 5 minutes to provide a coating film protective layer, and then repeat the process of providing a coating film layer and a coating film protection layer three times to obtain a coating film layer and a coating layer provided in a plurality of layers. A transfer sheet was produced in the same manner as in Example 1-1 except that the total film thickness of the dry film thickness of the film protective layer was 30 μm, and an ink layer was provided thereon.
The elongation percentage of the obtained transfer sheet was 604% at room temperature.
The elastic recovery rate at 100% elongation was 30%.

得られた転写シートを用いて、実施例1−1と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好であった。また、完成した平板の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。   Using the obtained transfer sheet, the pattern was decorated and transferred to the molded product in the same manner as in Example 1-1. After the irradiation, the substrate sheet on the transfer surface was peeled off, and the releasability and appearance were very good. Moreover, the coating film hardness of the finished flat plate sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.

[実施例3]
上記実施例2において、ABS平板の代わりに、自動車用センターパネル(ABS)を用いた以外は、実施例2と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好であった。また、完成した成形品上の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。
本実施例により、曲面を有する成形体にも、均一で良好な模様を転写することができることがわかる。
[Example 3]
In Example 2, the pattern was decorated and transferred to the molded product in the same manner as in Example 2 except that an automobile center panel (ABS) was used instead of the ABS flat plate. After the irradiation, the substrate sheet on the transfer surface was peeled off, and the releasability and appearance were very good. Moreover, the coating film hardness on the finished molded product sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.
According to this example, it can be seen that a uniform and good pattern can be transferred to a molded body having a curved surface.

[実施例4]
上記実施例2において、ABS平板の代わりに、自動車ウィンドウレギュレータスウィッチパネル(ABS)を用いた以外は、実施例2と同様にして、成形品に模様を加飾転写した(図2)。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好で、伸び率が30%を超える開口部の深い立面や側面部にも本件発明の転写シートの模様がしっかりと転写されており、塗膜の割れや剥がれも観察されなかった。また、完成した成形品上の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。
本実施例により、複雑な形状を有する三次元成形体にも、均一で良好な模様を転写することができることがわかる。また、この際の加飾した模様の柄伸びの状態を表3に示す。
但し、表3では、丸の部分の格子の面積及び伸び率(%)は、以下のようにして測定した。
(1)伸び状態を写真撮影する(5mm基準格子も同時に撮影)
(2)画像をCADソフトに取込む((株)フォトロン社製「図脳RAPID13Pro」)
(3)格子の面積伸び率をソフト上で計測(5mm基準格子が記載してある転写前のシートの丸で囲んだ部分の面積に対する、転写後ののび状態の該シートの該丸で囲んだ部分の面積の割合を示す。)
[Example 4]
In Example 2, the pattern was decorated and transferred in the same manner as in Example 2 except that an automobile window regulator switch panel (ABS) was used instead of the ABS flat plate (FIG. 2). When the substrate sheet on the transfer surface was peeled off after irradiation, the releasability and appearance were very good, and the transfer sheet of the present invention was also applied to deep elevations and side surfaces of openings with an elongation rate exceeding 30%. The pattern was firmly transferred, and no cracking or peeling of the coating film was observed. Moreover, the coating film hardness on the finished molded product sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.
This example shows that a uniform and good pattern can be transferred even to a three-dimensional molded body having a complicated shape. Table 3 shows the pattern elongation of the decorated pattern.
However, in Table 3, the area of the lattice and the elongation (%) of the round part were measured as follows.
(1) Take a picture of the stretched state (take a 5mm reference grid at the same time)
(2) Importing images into CAD software ("Puence Brain RAPID13Pro" manufactured by Photoron Co., Ltd.)
(3) The area elongation rate of the lattice is measured on the software (the circle of the sheet in the stretched state after the transfer with respect to the area of the circled portion of the sheet before the transfer on which the 5 mm reference lattice is described. Indicates the ratio of the area of the part.)

[実施例5]
上記実施例2において、ABS平板の代わりに、自動車インナーハンドル(ABS)を用いて、転写シートをインナーハンドルへ押し当て、減圧吸引(9kPa以下で約10秒)して加熱転写し、UV装置の積算光量が1200mJ/cmとなるようにUV照射した以外は、実施例2と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好で、アンダーカットのある裏面まで360度にわたり、ハンドルに非常に良好に模様が転写されていた。また、完成した成形品上の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。
本実施例により、円柱形状を有する三次元成形体にも、均一で良好な模様を転写することができることがわかる。
[Example 5]
In Example 2 described above, instead of the ABS flat plate, an automobile inner handle (ABS) was used, the transfer sheet was pressed against the inner handle, and vacuum transfer (9 kPa or less, about 10 seconds) was performed by heat transfer. A pattern was decoratively transferred to the molded product in the same manner as in Example 2 except that UV irradiation was performed so that the integrated light amount was 1200 mJ / cm 2 . After the irradiation, the substrate sheet on the transfer surface was peeled off. As a result, the releasability and the appearance were very good, and the pattern was transferred to the handle very well over 360 degrees to the back surface with the undercut. Moreover, the coating film hardness on the finished molded product sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.
According to this example, it can be seen that a uniform and good pattern can be transferred to a three-dimensional molded body having a cylindrical shape.

[比較例2]
上記実施例2で作成した三次元成形用転写シートを用いて、上記特開2002−240202号公報に開示されている真空転写法で転写シートを前加熱した後、転写シートを真空吸着させ、実施例4と同様の自動車用スイッチパネルへ転写を行って、加飾した成形品を得た(図3)。離型性及び外観、塗膜硬さ、塗膜密着性、耐光性、耐薬品性などの試験結果を表2に示す。
また得られた加飾済み成形品の、加飾した模様の柄伸びの状態を表3に示す。また、この際の加飾した模様の柄伸びの状態を表1に示す。但し、表3では、丸2の部分の格子の面積及び伸び率(%)を、上記実施例4に記載の測定方法で測定した。
[Comparative Example 2]
Using the three-dimensional molding transfer sheet prepared in Example 2 above, the transfer sheet was preheated by the vacuum transfer method disclosed in JP-A-2002-240202, and then the transfer sheet was vacuum-adsorbed. The product was transferred to the same automotive switch panel as in Example 4 to obtain a decorated molded product (FIG. 3). Table 2 shows test results such as releasability and appearance, coating film hardness, coating film adhesion, light resistance and chemical resistance.
Table 3 shows the pattern elongation of the decorated pattern of the obtained decorated molded product. Table 1 shows the pattern elongation of the decorated pattern at this time. However, in Table 3, the lattice area and elongation percentage (%) of the circled portion 2 were measured by the measurement method described in Example 4 above.

[実施例6]
上記実施例1−1において、厚み50μmのポリウレタンエラストマー基材フィルム1(日本マタイ(株)製「エスマーURS」)の代わりに、厚み100μmのウレタンオレフィン系基材フィルム(大倉工業(株)製「Hi−fas」、ガラス転移点34.2℃)を用いた以外は実施例1−1と同様にして転写シートを製造した。
得られた転写シートの伸び率は、常温で526.8%であった。
また、100%伸長時の弾性回復率は15.5%であった。
次いで、該転写シートを実施例3と同様にして、自動車用センターパネル(ABS)に加飾転写を行った。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好であった。また、完成した成形品上の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。
また、該転写シートを、実施例4と同様の自動車用ウィンドウレギュレータスウィッチパネル(ABS)に、実施例4と同様に、該成形品に模様を加飾転写し、この際の加飾した模様の柄伸びの状態(実施例4と同様の丸の部分格子の面積及び伸び率(%))を表3に示す。なお、完成した成形品上の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など、上記センターパネルのものを同様な塗膜性能を充分満たしていた。
本実施例により、ウレタンオレフィン系フィルムにおいても曲面を有する成形体に、均一で良好な模様を転写することができることがわかる。
[Example 6]
In Example 1-1, instead of the polyurethane elastomer base film 1 having a thickness of 50 μm (“Esmer URS” manufactured by Nippon Matai Co., Ltd.), a urethane olefin base film having a thickness of 100 μm (manufactured by Okura Kogyo Co., Ltd.) A transfer sheet was produced in the same manner as in Example 1-1 except that “Hi-fas” and a glass transition point of 34.2 ° C. were used.
The elongation percentage of the obtained transfer sheet was 526.8% at room temperature.
The elastic recovery rate at 100% elongation was 15.5%.
Next, the transfer sheet was subjected to decorative transfer to an automobile center panel (ABS) in the same manner as in Example 3. After the irradiation, the substrate sheet on the transfer surface was peeled off, and the releasability and appearance were very good. Moreover, the coating film hardness on the finished molded product sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.
In addition, the transfer sheet was decorated and transferred to the window regulator switch panel (ABS) for automobiles similar to that in Example 4 in the same manner as in Example 4. Table 3 shows the pattern elongation state (the area and elongation rate (%) of the same circular partial lattice as in Example 4). The coating film hardness on the finished molded product sufficiently satisfied the same coating film performance as that of the center panel, such as H, coating film adhesion, light resistance and chemical resistance.
This example shows that a uniform and good pattern can be transferred to a molded body having a curved surface even in a urethane olefin film.

[比較例3]
上記実施例1−1で示した厚み50μmのポリウレタンエラストマー基材フィルム1(日本マタイ(株)製「エスマーURS」)の代わりに、厚み125μmのポリエステル基材フィルム(東洋紡(株)製「ソフトシャインX1130−125」、ガラス転移点75.7℃)を用いた以外は、実施例1−1と同様にして転写シートを製造した。
得られた転写シートの伸び率は、常温で100%であった。
また、100%伸長時の弾性回復率は88%であった。
次いで、該転写シートを実施例3と同様にして、自動車用センターパネル(ABS)に加飾転写を行おうとしたが、シートが剛直なため、吸引しても自動車用パネルに追従できず、多くのしわが発生し、転写不可能であった(転写時の気温は20℃)。
[Comparative Example 3]
Instead of the polyurethane elastomer base film 1 having a thickness of 50 μm shown in Example 1-1 (“Esmer URS” manufactured by Nippon Matai Co., Ltd.), a polyester base film having a thickness of 125 μm (“Soft Shine” manufactured by Toyobo Co., Ltd.). A transfer sheet was produced in the same manner as in Example 1-1 except that X1130-125 ", glass transition point 75.7 ° C) was used.
The elongation percentage of the obtained transfer sheet was 100% at room temperature.
The elastic recovery rate at 100% elongation was 88%.
Next, the transfer sheet was subjected to decorative transfer to the automobile center panel (ABS) in the same manner as in Example 3. However, since the sheet was rigid, it could not follow the automobile panel even if it was sucked. No wrinkles occurred and transfer was impossible (temperature during transfer was 20 ° C.).

[実施例7]
上記実施例1−1において、塗膜層3を設けた後、インク層を設ける前に、塗膜層の上に、塗膜保護層4としてNeoRez R9679(楠本化成(株)製;乾燥後の伸長率が350%、ガラス転移温度が50℃)を、乾燥膜厚が2μmとなるように、バーコーターをもちいて塗布し、60℃で5分間乾燥して、塗膜保護層を設け、当該塗膜保護層の上にインク層を設けた以外は、実施例1−1と同様にして、転写シートを製造した。
得られた転写シートの伸び率は、常温(10〜40℃の範囲)で350%であった。
また、100%伸長時の弾性回復率は、30%であった。
得られた転写シートを用いて、実施例1−1と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、離型性、及び外観は非常に良好であった。また、完成した平板の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など塗膜性能を充分満たしていた。その結果を表2に示す。
また、該転写シートを、実施例4と同様の自動車用ウィンドウレギュレータスウィッチパネル(ABS)に、実施例4と同様に、該成形品に模様を加飾転写し、この際の加飾した模様の柄伸びの状態(実施例4と同様の丸の部分格子の面積及び伸び率(%))を表3に示す。なお、完成した成形品上の塗膜硬さはH、塗膜密着性、耐光性、耐薬品性など、上記センターパネルのものを同様な塗膜性能を充分満たしていた。
[Example 7]
In Example 1-1, after the coating film layer 3 was provided and before the ink layer was provided, NeoRez R9679 (manufactured by Enomoto Kasei Co., Ltd .; dried film coating layer 4 on the coating film layer; The elongation rate is 350% and the glass transition temperature is 50 ° C.) is applied using a bar coater so that the dry film thickness is 2 μm, and dried at 60 ° C. for 5 minutes to provide a coating film protective layer. A transfer sheet was produced in the same manner as in Example 1-1 except that an ink layer was provided on the coating film protective layer.
The elongation percentage of the obtained transfer sheet was 350% at ordinary temperature (range of 10 to 40 ° C.).
The elastic recovery rate at 100% elongation was 30%.
Using the obtained transfer sheet, the pattern was decorated and transferred to the molded product in the same manner as in Example 1-1. After the irradiation, the substrate sheet on the transfer surface was peeled off, and the releasability and appearance were very good. Moreover, the coating film hardness of the finished flat plate sufficiently satisfied the coating film performance such as H, coating film adhesion, light resistance and chemical resistance. The results are shown in Table 2.
In addition, the transfer sheet was decorated and transferred to the window regulator switch panel (ABS) for automobiles similar to that in Example 4 in the same manner as in Example 4. Table 3 shows the pattern elongation state (the area and elongation rate (%) of the same circular partial lattice as in Example 4). The coating film hardness on the finished molded product sufficiently satisfied the same coating film performance as that of the center panel, such as H, coating film adhesion, light resistance and chemical resistance.

[比較例4]
上記実施例1−1において、塗膜層3を設けた後、インク層を設ける前に、塗膜層の上に、塗膜保護層4としてスーパーフレックス 150HS(第一工業製薬(株)製;乾燥後の伸長率が420%、ガラス転移温度が32℃)を、乾燥膜厚が2μmとなるように、バーコーターをもちいて塗布し、60℃で5分間乾燥して、塗膜保護層を設けて、当該塗膜保護層の上にインク層を設けた以外は、実施例1−1と同様にして、転写シートを製造した。
得られた転写シートは、グラビア印刷による印刷不良を起こしており、良好な転写シートを製造することはできなかった。
[Comparative Example 4]
In Example 1-1, after providing the coating film layer 3 and before providing the ink layer, on the coating film layer, as a coating film protective layer 4, Superflex 150HS (Daiichi Kogyo Seiyaku Co., Ltd .; The elongation after drying is 420% and the glass transition temperature is 32 ° C.) is applied using a bar coater so that the dry film thickness is 2 μm, and dried at 60 ° C. for 5 minutes. A transfer sheet was produced in the same manner as in Example 1-1 except that an ink layer was provided on the coating film protective layer.
The obtained transfer sheet had printing defects due to gravure printing, and a good transfer sheet could not be produced.

[比較例5]
上記実施例1−1と同様にして塗膜層3を設けた後、インク層を設ける前に、塗膜層の上に、塗膜保護層4としてスーパーフレックス 126(第一工業製薬(株)製;乾燥後の伸長率が87%、ガラス転移温度が72℃)を、乾燥膜厚が2μmとなるように、バーコーターをもちいて塗布し、60℃で5分間乾燥して、塗膜保護層を設けた以外は、実施例1−1と同様にして、転写シートを製造した。
得られた転写シートの伸び率は、常温(10〜40℃の範囲)で87%であった。また、100%伸長時の弾性回復率は、前記伸び率が100%に満たないため、測定不能であった。
得られた転写シートを用いて、実施例1−1と同様にして、成形品に模様を加飾転写した。照射後、転写面の基材シートを剥がしたところ、転写シートの伸び率が悪いため、伸び率が高い開口部の深い立面や側面部に、塗膜の割れが発生した。その結果を表2に示す。
[Comparative Example 5]
After providing the coating film layer 3 in the same manner as in Example 1-1 and before providing the ink layer, Superflex 126 (Daiichi Kogyo Seiyaku Co., Ltd.) is formed on the coating film layer as the coating film protective layer 4. Made by applying a bar coater so that the dry film thickness is 2 μm and drying at 60 ° C. for 5 minutes to protect the coating film. A transfer sheet was produced in the same manner as in Example 1-1 except that the layer was provided.
The elongation percentage of the obtained transfer sheet was 87% at room temperature (range of 10 to 40 ° C.). Further, the elastic recovery rate at 100% elongation was not measurable because the elongation rate was less than 100%.
Using the obtained transfer sheet, the pattern was decorated and transferred to the molded product in the same manner as in Example 1-1. After the irradiation, the substrate sheet on the transfer surface was peeled off. As a result, the elongation of the transfer sheet was poor, and cracking of the coating film occurred on the deep vertical surfaces and side portions of the opening having a high elongation. The results are shown in Table 2.

[比較例6]
実施例1−1の転写シートを用いて、上記実施例3における自動車用センターパネル(ABS)に加飾転写する前に、該転写シートの基材シート側からUV照射装置(製品名 トスキュア1000;東芝ライテック社製)を用い、積算光量が250mj/cm又は500mj/cmなるようにUV前照射した。
得られたシートの伸び率は、常温(10〜40℃の範囲)で250mj/cmが14%、500mj/cmが1.9%であった。
この後、実施例3と同様にして、自動車用センターパネル(ABS)に加飾転写を行おうとしたが、転写初期段階で塗膜割れが発生し、転写不可能であった(転写時の気温は20℃)。
[Comparative Example 6]
Before the decorative transfer to the automobile center panel (ABS) in Example 3 above using the transfer sheet of Example 1-1, a UV irradiation device (product name Toscure 1000; (Manufactured by Toshiba Lighting & Technology Co., Ltd.) was used for UV pre-irradiation so that the integrated light amount was 250 mj / cm 2 or 500 mj / cm 2 .
The elongation percentage of the obtained sheet was 14% for 250 mj / cm 2 and 1.9% for 500 mj / cm 2 at room temperature (range of 10 to 40 ° C.).
Thereafter, in the same manner as in Example 3, an attempt was made to perform decorative transfer on the automobile center panel (ABS). However, cracking of the coating film occurred at the initial stage of transfer, and transfer was impossible (temperature during transfer). Is 20 ° C.).

Figure 0005158989
Figure 0005158989

Figure 0005158989
Figure 0005158989

表2及び表3より、本発明の転写シート及び当該転写シートを用いた加飾膜成形方法は、アンダーカットのあるような複雑な三次元形状に対する追従性に優れ、硬さ、耐光性、耐擦り傷性、耐衝撃性、耐熱性、耐水性、耐薬品等の物理的性能・化学的性能、長期耐久性能を付与でき、転写工程で最終表面処理の塗装まで施すことができる。このため、塗装コストが軽減できるだけでなく、溶剤を実質的に含有しないため、乾燥コストも軽減でき、環境に非常に優しい。
また、本発明は、模様の伸び率が小さく、意匠性に優れることもわかる。
From Tables 2 and 3, the transfer sheet of the present invention and the decorative film forming method using the transfer sheet are excellent in followability to a complicated three-dimensional shape having an undercut, and have hardness, light resistance, resistance to light. Scratch resistance, impact resistance, heat resistance, water resistance, chemical resistance and other physical and chemical performance, and long-term durability can be imparted, and the final surface treatment can be applied in the transfer process. For this reason, not only can the coating cost be reduced, but since the solvent is not substantially contained, the drying cost can also be reduced, which is very friendly to the environment.
Moreover, this invention also shows that the elongation rate of a pattern is small and it is excellent in design property.

本発明は、インモールド成形や水圧転写、三次元ラミネート成形法において使用する自動車や飛行機、重機、クルーザー、住宅、家具、家電製品などの内外装材製品全般の加飾に適用することができる。   The present invention can be applied to decoration of general interior and exterior material products such as automobiles, airplanes, heavy machinery, cruisers, houses, furniture, and home appliances used in in-mold molding, hydraulic transfer, and three-dimensional laminate molding methods.

1 基材シート
2 離型剤層
3 塗膜層
4 塗膜保護層
5 インク層
6 接着剤層
A 転写シート
DESCRIPTION OF SYMBOLS 1 Base material sheet 2 Release agent layer 3 Coating film layer 4 Coating film protective layer 5 Ink layer 6 Adhesive layer A Transfer sheet

Claims (4)

熱可塑性エラストマー樹脂からなるガラス転移点が40℃未満の基材シート1直上に離型剤層2、該離型剤層2の直上に塗膜層3、該塗膜層3の直上にインク層5が順次形成されており、常温時で300%以上の伸長率と100%伸張時の弾性回復率が40%以下を有し、前記塗膜層3は、塗膜成分として、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを30〜80重量%と、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを70〜20重量%とを含有し、かつ該塗膜成分100重量部に対し光重合開始剤を1〜10重量部を含有する紫外線硬化樹脂組成物からなり、電磁線照射前の塗膜層3のガラス転移点が40℃未満であり、該インク層は熱可塑性ポリウレタン樹脂、熱可塑性アクリル樹脂、塩化ビニル・酢酸ビニル共重合体樹脂を単独またはポリマーブレンドしてなる転写シートを用い、該転写シートのインク層側が成形品の表面側に面するようにして当該転写シートを伸長させた状態で密着させ、成形品の裏面側をシートを密着させた表面側より負圧にして該シートを該成形品に密着させ、次いで加熱することにより該シートを該成形体に加熱圧着させ、次いで電磁線を照射することにより塗膜層3を硬化させ、その後基材シート1を剥がすことを特徴とする、転写シートを用いた成形品への加飾膜形成方法。 A release agent layer 2 directly above the base sheet 1 having a glass transition point of less than 40 ° C. made of a thermoplastic elastomer resin, a coating layer 3 immediately above the release agent layer 2, and an ink layer directly above the coating layer 3 5 is formed sequentially, and has an elongation rate of 300% or more at normal temperature and an elastic recovery rate of 40% or less at 100% elongation, and the coating layer 3 has (meth) acryloyl as a coating component. 30 to 80% by weight of a urethane (meth) acrylate oligomer having 2 or more groups and 70 to 20% by weight of a polyfunctional monomer or oligomer having 3 or more (meth) acryloyl groups, and the coating film made of ultraviolet curing resin composition containing 1 to 10 parts by weight of a photopolymerization initiator relative to 100 parts by weight of component Ri glass transition point of 40 ° C. below der of the coating layer 3 before the electromagnetic radiation, the ink The layer is a thermoplastic polyurethane resin, Using thermoplastic acrylic resin, a transfer sheet vinyl chloride-vinyl acetate copolymer resin obtained by either alone or polymer blend, the ink layer side of the transfer sheet so as to face the surface of the molded article is stretched the transfer sheet The sheet is in close contact, the back side of the molded product is made negative pressure from the surface side to which the sheet is adhered, the sheet is adhered to the molded product, and then the sheet is heated and pressure-bonded to the molded body by heating, Next, the coating film layer 3 is cured by irradiating electromagnetic radiation, and then the base material sheet 1 is peeled off . A method for forming a decorative film on a molded product using a transfer sheet. 熱可塑性エラストマー樹脂からなるガラス転移点が40℃未満の基材シート1直上に離型剤層2、該離型剤層の直上に塗膜層3、該塗膜層3の直上に塗膜保護層4、該塗膜保護層4の直上にインク層5が順次形成されており、常温時で300%以上の伸長率と100%伸張時の弾性回復率が40%以下を有し、前記塗膜層3は、塗膜成分として、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを30〜80重量%と、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを70〜20重量%とを含有し、かつ該塗膜成分100重量部に対し光重合開始剤を1〜10重量部を含有する紫外線硬化樹脂組成物からなり、電磁線照射前の塗膜層3のガラス転移点が40℃未満であり、前記塗膜保護層4は電磁線照射前のガラス転移点が40〜60℃で、乾燥後の伸長率が300%以上の水性ポリウレタン層からなり、該インク層は熱可塑性ポリウレタン樹脂、熱可塑性アクリル樹脂、塩化ビニル・酢酸ビニル共重合体樹脂を単独またはポリマーブレンドしてなる転写シートを用いて、該転写シートのインク層5側が成形品の表面側に面するようにして当該転写シートを伸長させた状態で密着させ、成形品の裏面側をシートを密着させた表面側より負圧にして該シートを該成形品に密着させ、次いで加熱することにより該シートを該成形体に加熱圧着させ、次いで電磁線を照射することにより塗膜層3を硬化させ、その後基材シート1を剥がすことを特徴とする、転写シートを用いた成形品への加飾膜形成方法。 A release agent layer 2 just above the substrate sheet 1 having a glass transition point of less than 40 ° C. made of a thermoplastic elastomer resin, a coating layer 3 just above the release agent layer, and a coating protection just above the coating layer 3 The ink layer 5 is formed in sequence on the layer 4 and the coating film protective layer 4 and has an elongation rate of 300% or more at normal temperature and an elastic recovery rate of 40% or less at 100% elongation. The film layer 3 comprises 30 to 80% by weight of a urethane (meth) acrylate oligomer having two or more (meth) acryloyl groups and a polyfunctional monomer or oligomer having three or more (meth) acryloyl groups as a coating film component. The coating layer 3 comprising 70 to 20% by weight and comprising an ultraviolet curable resin composition containing 1 to 10 parts by weight of a photopolymerization initiator with respect to 100 parts by weight of the coating film component. Glass transition point of less than 40 ℃, Film protective layer 4 is a glass transition point of the previous electromagnetic irradiation is 40 to 60 ° C., elongation percentage after drying Ri is Do 300% or more of the aqueous polyurethane layer, the ink layer is a thermoplastic polyurethane resin, thermoplastic acrylic resin The transfer sheet was stretched by using a transfer sheet formed by singly or polymer blending vinyl chloride / vinyl acetate copolymer resin so that the ink layer 5 side of the transfer sheet faces the surface side of the molded product. The sheet is brought into close contact, and the back side of the molded product is brought to a negative pressure from the surface side to which the sheet is adhered, the sheet is brought into close contact with the molded product, and then the sheet is heated and pressure-bonded to the molded body by heating. A method for forming a decorative film on a molded article using a transfer sheet, wherein the coating layer 3 is cured by irradiating electromagnetic radiation, and then the substrate sheet 1 is peeled off . 熱可塑性エラストマー樹脂からなるガラス転移点が40℃未満の基材シート1直上に離型剤層2、該離型剤層2の直上に複数層の交互に設けられた塗膜層3及び塗膜保護層4、該塗膜保護層4の直上にインク層5が順次形成されており、常温時で300%以上の伸長率と100%伸張時の弾性回復率が40%以下を有し、前記塗膜層3は、塗膜成分として、(メタ)アクリロイル基を2個以上有するウレタン(メタ)アクリレートオリゴマーを30〜80重量%と、(メタ)アクリロイル基を3個以上有する多官能モノマーまたはオリゴマーを70〜20重量%とを含有し、かつ該塗膜成分100重量部に対し光重合開始剤を1〜10重量部を含有する紫外線硬化樹脂組成物からなり、電磁線照射前の塗膜層3のガラス転移点が40℃未満であり、前記塗膜保護層4は電磁線照射前のガラス転移点が40〜60℃で、乾燥後の伸長率が300%以上の水性ポリウレタン層からなり、該インク層は熱可塑性ポリウレタン樹脂、熱可塑性アクリル樹脂、塩化ビニル・酢酸ビニル共重合体樹脂を単独またはポリマーブレンドしてなる転写シートを用いて、該転写シートのインク層5側が成形品の表面側に面するようにして当該転写シートを伸長させた状態で密着させ、成形品の裏面側をシートを密着させた表面側より負圧にして該シートを該成形品に密着させ、次いで加熱することにより該シートを該成形体に加熱圧着させ、次いで電磁線を照射することにより塗膜層3を硬化させ、その後基材シート1を剥がすことを特徴とする、転写シートを用いた成形品への加飾膜形成方法。 A release agent layer 2 directly above the base sheet 1 having a glass transition point of less than 40 ° C. made of a thermoplastic elastomer resin, and a plurality of coating layers 3 and a coating layer provided alternately on the release agent layer 2. The protective layer 4 and the ink layer 5 are sequentially formed immediately above the coating film protective layer 4 and have an elongation rate of 300% or more at normal temperature and an elastic recovery rate of 40% or less at 100% elongation, The coating layer 3 is a polyfunctional monomer or oligomer having 30 to 80% by weight of urethane (meth) acrylate oligomer having 2 or more (meth) acryloyl groups and 3 or more (meth) acryloyl groups as coating film components. And a coating layer before irradiation with electromagnetic radiation, comprising an ultraviolet curable resin composition containing 1 to 10 parts by weight of a photopolymerization initiator with respect to 100 parts by weight of the coating film component. The glass transition point of 3 is less than 40 ° C Ri, the coating film protective layer 4 is a glass transition point of the previous electromagnetic irradiation is 40 to 60 ° C., elongation percentage after drying Ri is Do 300% or more of the aqueous polyurethane layer, the ink layer is a thermoplastic polyurethane resin, Using a transfer sheet made of a thermoplastic acrylic resin, vinyl chloride / vinyl acetate copolymer resin alone or in a polymer blend, the transfer sheet so that the ink layer 5 side of the transfer sheet faces the surface side of the molded product The sheet is brought into close contact with the sheet, and the back side of the molded product is brought to a negative pressure from the surface side where the sheet is adhered, the sheet is brought into close contact with the molded product, and then the sheet is heated to heat the molded body A method for forming a decorative film on a molded product using a transfer sheet, wherein the coating layer 3 is cured by press-bonding and then irradiating electromagnetic radiation, and then the substrate sheet 1 is peeled off . 請求項1〜3いずれかの項記載の転写シートを用いた成形品への加飾膜形成方法において、転写シートは、インク層5の上に、更に接着剤層6を積層してなることを特徴とする、転写シートを用いた成形品への加飾膜形成方法The method for forming a decorative film on a molded product using the transfer sheet according to any one of claims 1 to 3, wherein the transfer sheet is formed by further laminating an adhesive layer 6 on the ink layer 5. A method for forming a decorative film on a molded product using a transfer sheet, which is characterized.
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