JP5148754B2 - フィルム、その製造方法、積層フィルムもしくはシート、および積層体 - Google Patents
フィルム、その製造方法、積層フィルムもしくはシート、および積層体 Download PDFInfo
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- JP5148754B2 JP5148754B2 JP2011522185A JP2011522185A JP5148754B2 JP 5148754 B2 JP5148754 B2 JP 5148754B2 JP 2011522185 A JP2011522185 A JP 2011522185A JP 2011522185 A JP2011522185 A JP 2011522185A JP 5148754 B2 JP5148754 B2 JP 5148754B2
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- vinylidene fluoride
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- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- SJMYWORNLPSJQO-UHFFFAOYSA-N tert-butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(C)(C)C SJMYWORNLPSJQO-UHFFFAOYSA-N 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- SGCFZHOZKKQIBU-UHFFFAOYSA-N tributoxy(ethenyl)silane Chemical compound CCCCO[Si](OCCCC)(OCCCC)C=C SGCFZHOZKKQIBU-UHFFFAOYSA-N 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000009816 wet lamination Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/14—PVF, i.e. polyvinyl fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
- B29K2033/08—Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0041—Crystalline
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
- B29K2995/0073—Roughness, e.g. anti-slip smooth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/008—Wide strips, e.g. films, webs
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
〔1〕フッ化ビニリデン系樹脂(A)及びアクリル系樹脂(B)を含有する、少なくとも一方の面の算術平均粗さが0.1〜20nm、示差走査熱量計により測定される結晶融解熱が18〜40J/g、及び、ヘーズ値が3.5以下であるフィルム。
〔6〕前記〔4〕に記載の製造方法によって得られたフィルム。
〔7〕前記〔5〕に記載のフィルムに熱可塑性樹脂層を積層した積層フィルムまたは積層シート。
〔8〕前記〔6〕に記載のフィルムに熱可塑性樹脂層を積層した積層フィルムまたは積層シート。
〔9〕前記〔5〕に記載のフィルムに基材を積層した積層体。
〔10〕前記〔6〕に記載のフィルムに基材を積層した積層体。
〔11〕前記〔1〕に記載のフィルムに熱可塑性樹脂層を積層した積層フィルムまたは積層シート。
〔12〕前記〔1〕に記載のフィルムに基材を積層した積層体。
本発明において使用されるフッ化ビニリデン系樹脂(A)は、メルトマスフローレイト(以下「MFR」という)が10[g/10分]以上のものである。MFRが10[g/10分]以上であれば製膜時の溶融粘度を適切な範囲に設定でき、製造されるフィルムにおいて、透明性の悪化及びヘーズ値の増大の原因の一つであるフィルムの表面凹凸(算術平均粗さ)を小さく抑えることができる。
本発明において使用されるアクリル系樹脂(B)としては、例えば、アルキル基の炭素数が1〜4のアルキルメタクリレート単位(B1)50〜100質量%及び他のビニル単量体単位(B2)0〜50質量%を含有する単独重合体又は共重合体が挙げられる。アクリル系樹脂(B)は単独で又は2種以上を併用して使用することができる。
本発明においてフィルムの算術平均粗さは、フィルタ(ハイパスフィルタ)によって、断面曲線から長波長成分を遮断することによって得られる輪郭曲線(粗さ曲線)より求めることができる。これら断面曲線は、非接触3次元表面形状・粗さ測定機、原子間力顕微鏡、レーザー共焦点顕微鏡などを用いて測定することができる。また、この測定に好適な非接触3次元表面形状測定機として、ZYGO社製の製品であるNew View シリーズなどを挙げることができる。算術平均粗さは、ヘーズ値を小さく抑えることが出来る為20nm以下であることが好ましく、15nm以下であることがより好ましく、10nm以下であることが特により好ましい。
本発明のフィルムは、耐熱性の観点から、JISK7121、3.(2)に記載の方法に準拠して測定した時の融解ピーク温度150℃以上を有することが好ましく、160℃以上であることが特に好ましい。融解ピーク温度の上限は、ほぼフッ化ビニリデンホモポリマーの融解温度に等しい温度であり、一般的に175℃程度である。
本発明のフィルムは、フッ化ビニリデン系樹脂(A)及びアクリル系樹脂(B)を含む樹脂組成物を溶融押出しし、次いで、得られた溶融押出物を、表面温度が35〜75℃、好ましくは40〜60℃、より好ましくは40〜50℃の少なくとも1本の冷却ロールに接触させて製膜する方法で製造される。溶融押出方法としては、Tダイ法、インフレーション法等が挙げられ、これらのうち経済性の点でTダイ法が好ましい。溶融押出温度は、150〜235℃程度が好ましい。また、押出機としては、例えば、単軸押出機及び二軸押出機が挙げられる。
本発明の製造方法によって得られるフィルムは、さらに熱可塑性樹脂層を積層して、積層フィルムまたはシートとしてもよい。
本発明の積層体は、本発明の製造方法によって得られるフィルム、その積層フィルムまたはシートを、基材に積層したものである。基材の材質としては、樹脂;木材単板、木材合板、パーティクルボード、中密度繊維板(MDF)等の木材板;木質繊維板等の木質板;鉄、アルミニウム等の金属等が挙げられる。
フィルムを縦横5cm角に切り出し、ヘーズメーター(日本電色工業(株)製、商品名:NDH2000)を用い、JIS K7361−1に準拠して全光線透過率を測定した。
フィルムを縦横5cm角に切り出し、ヘーズメーター(日本電色工業(株)製、商品名:NDH2000)を用いてJIS K7105に準拠してヘーズ値を測定した。
示差走査熱量計((株)パーキンエルマー製、商品名Diamond DSC)を用い、結晶融点としてJIS K7121、3.(2)に記載の方法に準拠して昇温スピード10℃/分の条件で昇温を行い、融解ピーク温度を測定した。またその際、融解ピークの面積より求めた吸熱量を結晶融解熱とした。
テトラヒドロフランを溶媒に用いたゲル浸透クロマトグラフィー(GPC)測定を行い、分子量が既知のポリスチレンを標準試料に用いて較正することで質量平均分子量(Mw)及び数平均分子量(Mn)を求めた。Mw/Mnを分子量分布とした。
JISK7210に従い、230℃に保ったシリンダへ試料を充填し、4分間保持した後、3.8kgの荷重をかけて押出される試料を採取、秤量することで求めた。試験は3回繰り返し、その平均値を求めた。
フィルムの算術平均粗さは、非接触3次元走査型白色干渉法により求めた。測定面は、冷却ロールに接した面とし、異なる3箇所についてそれぞれ算術平均粗さを求め、その値を平均した。測定条件は以下のように設定した。
測定機器:New−View6300(ZYGO社製)、
解析ソフト:MetroProソフトウェア(ZYGO社製)、
対物レンズ:2.5倍、
中間レンズズーム:1倍、
Filter:High Pass、
測定視野:2.81mm×2.11mm、
カメラ解像度:320×240、200Hz。
フッ化ビニリデン系樹脂(A−1)としてKynar720(アルケマ(株)製ポリフッ化ビニリデン、商品名、MFR:14.2[g/10分]、融解ピーク温度173℃、フッ化ビニリデン単位100質量%)80部、アクリル系樹脂(B−1)としてメチルメタクリレート単位99質量%、及びメチルアクリレート単位1質量%を含有する共重合体(質量平均分子量10万、分子量分布2.0)20部をヘンシェルミキサーを用いて混合し、得られた混合物を180〜220℃に加熱したベント式2軸押出機(東芝機械(株)製、商品名:TEM−35B)に供給、混練してペレットを得た。
フッ化ビニリデン系樹脂(A−1)の代わりに、フッ化ビニリデン系樹脂(A−2)としてKynar740(アルケマ(株)製ポリフッ化ビニリデン、商品名、MFR:0.5[g/10分]、融解ピーク温度173℃、フッ化ビニリデン単位100質量%)を使用した。それ以外は実施例1と同様にしてフィルムを得た。得られたフィルムの各評価結果を表1に示す。
フッ化ビニリデン系樹脂(A−1)及びアクリル系樹脂(B−1)の含有量、冷却ロール温度及び得られるフィルムの厚みを表1に示す条件とし、それ以外は実施例1と同様にしてフィルムを得た。得られたフィルムの各評価結果を表1に示す。
紫外線吸収剤として、2−(4,6−ジフェニル−1,3,5−トリアジン−2―イル)−5−[(ヘキシル)オキシ]−フェノール(BASF、商品名Tinuvin1577FF)をフッ化ビニリデン系樹脂(A−1)及びアクリル系樹脂(B−1)の合計100質量部に対して1質量部使用し、冷却ロール温度及び得られるフィルムの厚みを表1に示す条件とした以外は実施例1と同様にして、フィルムを得た。得られたフィルムの各評価結果を表1に示す。
フッ化ビニリデン系樹脂(A−3)としてKynar720(アルケマ(株)製ポリフッ化ビニリデン、MFR:21.1[g/10分]、フッ化ビニリデン単位100質量%、融解ピーク温度173℃)を使用し、冷却ロール温度を50℃とした以外は実施例1と同様にしてフィルムを得た。得られたフィルムの各評価結果を表1に示す。
表1から明らかなように、本発明の方法で得られたフィルムは厚膜であっても耐熱性及び透明性に優れ、ヘーズ値が小さいことがわかる。
Claims (12)
- フッ化ビニリデン系樹脂(A)及びアクリル系樹脂(B)を含有する、少なくとも一方の面の算術平均粗さが0.1〜20nm、示差走査熱量計により測定される結晶融解熱が18〜40J/g、及び、ヘーズ値が3.5以下であるフィルム。
- JISK7210に準拠して測定した、230℃及び荷重3.8kgの条件におけるメルトマスフローレイトが10[g/10分] 以上のフッ化ビニリデン系樹脂(A)75〜95質量%、及びアクリル系樹脂(B)5〜25質量%を含有する樹脂組成物を溶融押出しする、請求項1に記載のフィルムの製造方法。
- JISK7210に準拠して測定した、230℃及び荷重3.8kgの条件におけるメルトマスフローレイトが10[g/10分]分以上のフッ化ビニリデン系樹脂(A)75〜95質量%及びアクリル系樹脂(B)5〜25質量%を含有する樹脂組成物を溶融押出しし、次いで、得られた溶融押出物を、少なくとも1本の表面温度が35〜75℃の冷却ロールに接触させるフィルムの製造方法。
- アクリル系樹脂(B)が、アルキル基の炭素数が1〜4のアルキルメタクリレート単位を50質量%以上含む樹脂であることを特徴とする請求項2または3に記載のフィルムの製造方法。
- 請求項2または3に記載の製造方法によって得られたフィルム。
- 請求項4に記載の製造方法によって得られたフィルム。
- 請求項5に記載のフィルムに熱可塑性樹脂層を積層した積層フィルムまたは積層シート。
- 請求項6に記載のフィルムに熱可塑性樹脂層を積層した積層フィルムまたは積層シート。
- 請求項5に記載のフィルムに基材を積層した積層体。
- 請求項6に記載のフィルムに基材を積層した積層体。
- 請求項1に記載のフィルムに熱可塑性樹脂層を積層した積層フィルムまたは積層シート。
- 請求項1に記載のフィルムに基材を積層した積層体。
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