JP6664651B2 - Method of applying adhesive to nonwoven fabric ventilation filter - Google Patents
Method of applying adhesive to nonwoven fabric ventilation filter Download PDFInfo
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- JP6664651B2 JP6664651B2 JP2017249719A JP2017249719A JP6664651B2 JP 6664651 B2 JP6664651 B2 JP 6664651B2 JP 2017249719 A JP2017249719 A JP 2017249719A JP 2017249719 A JP2017249719 A JP 2017249719A JP 6664651 B2 JP6664651 B2 JP 6664651B2
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- nonwoven fabric
- adhesive
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- sensitive adhesive
- filter
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- 238000009423 ventilation Methods 0.000 title claims description 40
- 239000004745 nonwoven fabric Substances 0.000 title claims description 35
- 239000000853 adhesive Substances 0.000 title claims description 30
- 230000001070 adhesive effect Effects 0.000 title claims description 30
- 238000000034 method Methods 0.000 title claims description 16
- 239000000835 fiber Substances 0.000 claims description 32
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 30
- 239000000470 constituent Substances 0.000 claims description 23
- 229920000728 polyester Polymers 0.000 claims description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 4
- 239000003522 acrylic cement Substances 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000007607 die coating method Methods 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 102100027340 Slit homolog 2 protein Human genes 0.000 description 8
- 101710133576 Slit homolog 2 protein Proteins 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 239000012943 hotmelt Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 101700004678 SLIT3 Proteins 0.000 description 1
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
Landscapes
- Treatment Of Fiber Materials (AREA)
- Filtering Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
本発明は、住宅の換気口や、換気扇の排気口又は吸気口に貼着して使用される不織布製通気フィルターに、貼着のための粘着剤を塗布する方法に関するものである。 The present invention relates to a method for applying a pressure-sensitive adhesive for application to a ventilation filter made of nonwoven fabric which is used by being attached to a ventilation opening of a house or an exhaust opening or an intake opening of a ventilation fan.
従来より、住宅の換気口等に貼着して使用される不織布製通気フィルターの片面（裏面）の一部には、貼着のための粘着剤が塗布されている。そして、不織布製通気フィルターに粘着剤を塗布する方法としては、一般的に転写法が用いられている。すなわち、離型材表面の所定の部位に粘着剤層を形成した後に、不織布製通気フィルターを粘着剤層に接着させる方法で、離型材／粘着剤層／不織布製通気フィルターの三層構造体とし、換気口等に貼着する際に離型材を剥離して使用されている。 2. Description of the Related Art Conventionally, an adhesive for sticking has been applied to a part of one surface (back surface) of a nonwoven fabric ventilation filter used by sticking to a ventilation opening or the like of a house. A transfer method is generally used as a method of applying the pressure-sensitive adhesive to the nonwoven fabric ventilation filter. That is, after a pressure-sensitive adhesive layer is formed at a predetermined site on the surface of the release material, a three-layer structure of release material / pressure-sensitive adhesive layer / non-woven air-permeable filter is formed by a method of bonding a nonwoven airflow filter to the pressure-sensitive adhesive layer, It is used by peeling off the release material when attaching it to a ventilation port or the like.
かかる方法で得られた粘着剤層は非通気性であるため、粘着剤層を設けた部位の不織布製通気フィルターの濾過性能が減殺されることになる。従来は、濾過性能が減殺されることを当然のこととし、むしろ、濾過性能の減殺を利用した製品が開発されている。たとえば、特許文献１には、粘着剤層が設けられていない不織布製通気フィルターの部位には、汚れが付着し、その部分が黒く変色していくが、一方、粘着剤層が設けられている不織布製通気フィルターの部位には汚れが付着しにくくなるため、その部分が白く浮き上がり、不織布製通気フィルターの貼着替え時が示されることが記載されている（特許文献１、段落０００３）。しかしながら、粘着剤層が設けられている不織布製通気フィルターの濾過性能が減殺されると、フィルターの寿命は短くなる。 Since the pressure-sensitive adhesive layer obtained by such a method is non-permeable, the filtration performance of the nonwoven fabric-permeable filter at the portion where the pressure-sensitive adhesive layer is provided is reduced. Conventionally, it is natural that filtration performance is reduced, and rather, products utilizing the reduction of filtration performance have been developed. For example, in Patent Literature 1, dirt adheres to a portion of a nonwoven fabric ventilation filter in which an adhesive layer is not provided, and the portion turns black, but on the other hand, an adhesive layer is provided. It is described that dirt hardly adheres to a portion of the nonwoven fabric ventilation filter, so that the portion floats up white, indicating the time of replacement of the nonwoven fabric ventilation filter (Patent Document 1, paragraph 0003). However, when the filtration performance of the nonwoven fabric ventilation filter provided with the pressure-sensitive adhesive layer is reduced, the life of the filter is shortened.
本発明の課題は、不織布製通気フィルターの片面の全部又は一部に粘着剤を塗布する方法であって、粘着剤を塗布した部位の濾過性能が減殺されにくい方法を提供することにある。 An object of the present invention is to provide a method for applying an adhesive to all or a part of one surface of a nonwoven fabric ventilation filter, and to provide a method in which the filtration performance of a portion to which the adhesive is applied is hardly diminished.
本発明は、不織布製通気フィルターの表面が平坦ではなく、構成繊維の存在する箇所と存在しない箇所があることに着目し、特定の塗布方法を採用することによって、上記課題を解決したものである。すなわち、本発明は、構成繊維が集積されてなり、該構成繊維相互間に間隙が形成されてなる不織布製通気フィルターを準備する工程、ダイ塗布装置のダイヘッドのスリットに流動状態の粘着剤を供給する工程及び前記スリットの出口に、実質的に無加圧の状態で前記不織布製通気フィルターの片面を接触させながら搬送する工程により、該片面に存在する構成繊維表面にのみ粘着剤を付与することを特徴とする不織布製通気フィルターへの粘着剤の塗布方法に関するものである。 The present invention has solved the above-described problems by noting that the surface of the nonwoven fabric ventilation filter is not flat, and that there are places where constituent fibers exist and places where the constituent fibers do not exist, and a specific application method is employed. . That is, the present invention provides a step of preparing a nonwoven fabric ventilation filter in which constituent fibers are accumulated and a gap is formed between the constituent fibers, and supplying a flowing adhesive to a slit of a die head of a die coating apparatus. Applying the pressure-sensitive adhesive only to the surface of the constituent fibers present on one side of the slit by performing the step of transporting the non-woven fabric ventilation filter while contacting one side of the non-woven air-permeable filter with substantially no pressure at the outlet of the slit. And a method for applying a pressure-sensitive adhesive to a nonwoven fabric ventilation filter.
本発明で用いる不織布製通気フィルターは、構成繊維が集積されてなり、構成繊維相互間に間隙が形成されてなるものである。この間隙を空気が通過すると共に、塵埃等がこの間隙で捕集されるのである。構成繊維としては、従来公知の短繊維等が用いられ、たとえば、ポリエステル短繊維、レーヨン短繊維、ポリビニルアルコール系短繊維、ポリオレフィン系短繊維等が単独で又は混合して用いられる。特に、構成繊維としては、ポリエステル短繊維を主体として用いるのが好ましい。ポリエステル短繊維は耐候性に優れていると共に、変色しにくいからである。また、構成繊維相互間の交点も、従来公知の接着剤で接着されており、たとえば、アクリル系接着剤、ゴム系接着剤又はポリオレフィン系接着剤等で接着されている。この接着剤中には、難燃剤を含有させておくのが好ましい。不織布製通気フィルターはレンジフード等の吸気口にも使用されるため、難燃性である方が火災の危険を防止しうる。なお、具体的には、接着剤としてアクリル系接着剤を用い、このアクリル系接着剤中にリン系難燃剤を含有させておくのが好ましい。 The nonwoven fabric ventilation filter used in the present invention is one in which constituent fibers are accumulated and a gap is formed between the constituent fibers. As the air passes through the gap, dust and the like are collected in the gap. As the constituent fibers, conventionally known short fibers and the like are used. For example, polyester short fibers, rayon short fibers, polyvinyl alcohol short fibers, polyolefin short fibers and the like are used alone or in combination. In particular, it is preferable to use mainly polyester short fibers as the constituent fibers. This is because polyester staple fibers have excellent weather resistance and are not easily discolored. The intersections between the constituent fibers are also bonded with a conventionally known adhesive, for example, with an acrylic adhesive, a rubber adhesive, a polyolefin adhesive, or the like. It is preferable that the adhesive contains a flame retardant. Since a nonwoven fabric ventilation filter is also used for an intake port of a range hood or the like, a flame retardant one can prevent a fire danger. In addition, specifically, it is preferable to use an acrylic adhesive as an adhesive, and to include a phosphorus-based flame retardant in the acrylic adhesive.
不織布製通気フィルターの目付は２０ｇ／ｍ2〜３００ｇ／ｍ2程度のものである。また、不織布製通気フィルターは比較的粗目のものである。 Basis weight of the nonwoven fabric venting filter is of the order of 20g / m 2 ~300g / m 2 . Also, the nonwoven fabric ventilation filter is relatively coarse.
本発明で用いるダイ塗布装置も公知のものであり、スリットが設けられたダイヘッドと、粘着剤を収納するタンクと、ダイヘッドとタンクとを繋ぐ管とを具えたものである。一般的に、粘着剤はタンク内で加熱し軟化又は溶融させて流動状態にする。そして、ポンプを用いるか又は加圧して、管を通してダイヘッドのスリットに流動状態の粘着剤を供給する。ポンプの回転数や加圧時の圧力は、流動状態の粘着剤がスリットの出口から激しく吐出しない程度に調整するのが好ましい。スリットに供給された粘着剤は、スリットの出口まで至る。スリットの幅は、０．１〜０．５ｍｍ程度であるのが好ましい。スリットの幅が広すぎると、スリットの出口に至った粘着剤が流れ落ちてしまうからである。また、スリットの幅が狭すぎると、スリットの出口に至った粘着剤を不織布製通気フィルターの構成繊維に付与しにくくなる。 The die coating apparatus used in the present invention is also known, and includes a die head provided with a slit, a tank for storing an adhesive, and a pipe connecting the die head and the tank. Generally, the pressure-sensitive adhesive is heated and softened or melted in a tank to make it flowable. Then, a pressure-sensitive adhesive in a flowing state is supplied to the slit of the die head through a tube by using a pump or by applying pressure. The rotation speed of the pump and the pressure at the time of pressurization are preferably adjusted to such an extent that the adhesive in the flowing state is not violently discharged from the exit of the slit. The adhesive supplied to the slit reaches the exit of the slit. The width of the slit is preferably about 0.1 to 0.5 mm. If the width of the slit is too wide, the adhesive that has reached the exit of the slit will flow down. On the other hand, if the width of the slit is too narrow, it becomes difficult to apply the pressure-sensitive adhesive reaching the exit of the slit to the constituent fibers of the nonwoven fabric ventilation filter.
本発明で用いる粘着剤としては、従来公知のものを採用しうるが、特にホットメルト粘着剤を採用するのが好ましい。ホットメルト粘着剤は、加熱すると軟化又は溶融して流動状態となるもので、冷却して固化したときに粘着機能を発揮するものである。ホットメルト接着剤を流動状態としたときの粘度は任意であるが、８００ｍＰａ・ｓ以上であるのが好ましい。粘度が低すぎると、スリットの出口に至った粘着剤が流れ落ちてしまうからである。ホットメルト粘着剤は、一般的に、ポリオレフィン系樹脂とアクリル系ゴム等のエラストマーとよりなるもので、必要に応じて粘着付与剤や軟化剤等が添加されてなるものである。これらの各成分の量を調整することにより、流動状態となったときに適当な粘度とすることができ、また適当な貼着力とすることができる。さらに、不織布製通気性フィルターの貼着替えのときに、粘着剤が換気口等の被貼着体に残りにくくすることができる。 As the pressure-sensitive adhesive used in the present invention, a conventionally known pressure-sensitive adhesive can be used, but it is particularly preferable to use a hot-melt pressure-sensitive adhesive. The hot-melt pressure-sensitive adhesive is softened or melted into a fluid state when heated, and exhibits a pressure-sensitive adhesive function when cooled and solidified. The viscosity of the hot melt adhesive in a fluidized state is arbitrary, but is preferably 800 mPa · s or more. If the viscosity is too low, the adhesive that has reached the exit of the slit will flow down. The hot melt pressure-sensitive adhesive generally comprises a polyolefin-based resin and an elastomer such as an acrylic rubber, and is added with a tackifier, a softener, and the like as necessary. By adjusting the amount of each of these components, it is possible to obtain an appropriate viscosity when it is in a fluid state, and to obtain an appropriate sticking force. Further, when the nonwoven fabric breathable filter is replaced, the adhesive can be made less likely to remain on the adherend such as a ventilation port.
本発明の特徴は、図１に示すように、ダイヘッド１のスリット２の出口に、実質的に無加圧の状態で不織布製通気フィルター３の片面（裏面）を接触させながら搬送（図１中の矢印方向に搬送）する点にある。スリット２中には、流動状態の粘着剤４が供給されたおり、スリット２の出口に至っている。このとき、不織布製通気フィルター３の片面が無加圧の状態で、スリット２の出口と接触すると、スリット２の出口に至った粘着剤は、不織布製通気フィルター２の片面に存在する構成繊維のみに付与され、構成繊維相互間の間隙には付与されない。すなわち、スリット２の出口に至った粘着剤と接触した片面に存在する構成繊維のみに、粘着剤が付与されるのである。実質的に加圧した状態でスリット２の出口に押し付けると、不織布製通気フィルターの内部に存在する構成繊維が片面（裏面）に露出して当該構成繊維にも粘着剤が付与されるため、加圧を解除したときに間隙に粘着剤が付与されることになり、好ましくない。なお、不織布製通気フィルター２の搬送速度が遅すぎると、スリット２の出口に至った粘着剤の量が多くなって，構成繊維相互間の間隙に流れ落ちる恐れがある。したがって、不織布製通気フィルター２の搬送速度は適宜調整する必要がある。 The feature of the present invention is that, as shown in FIG. 1, one side (back side) of the nonwoven fabric ventilation filter 3 is brought into contact with the exit of the slit 2 of the die head 1 in a substantially non-pressurized state (see FIG. 1). (Conveyed in the direction of the arrow). The adhesive 4 in a flowing state is supplied into the slit 2, and reaches the outlet of the slit 2. At this time, when one side of the nonwoven fabric ventilation filter 3 is in contact with the exit of the slit 2 in a non-pressurized state, the adhesive reaching the exit of the slit 2 is only the constituent fibers present on one surface of the nonwoven fabric ventilation filter 2. And not to the gaps between the constituent fibers. That is, the adhesive is applied only to the constituent fibers existing on one side in contact with the adhesive reaching the outlet of the slit 2. When pressed against the outlet of the slit 2 in a substantially pressurized state, the constituent fibers present inside the nonwoven fabric ventilation filter are exposed on one side (back side), and the constituent fibers are also provided with an adhesive. When the pressure is released, an adhesive is applied to the gap, which is not preferable. If the conveying speed of the nonwoven fabric ventilation filter 2 is too slow, the amount of the adhesive that has reached the outlet of the slit 2 may increase and may flow down into the gap between the constituent fibers. Therefore, the transport speed of the nonwoven fabric ventilation filter 2 needs to be adjusted appropriately.
粘着剤は、不織布製通気フィルターの片面全面に塗布されてもよいし、一部に塗布されてもよい。全面に塗布される場合、粘着剤の塗布量は、３〜３０ｇ／ｍ2程度である。また、一部に塗布される場合も、この程度の割合の塗布量でよい。図２は、本発明に係る方法で得られた粘着剤付き不織布製通気フィルターの顕微鏡写真であり、白っぽい塊が粘着剤である。かかる粘着剤付き不織布製通気フィルターは、住宅の換気口、レンジフードの吸気口、エアコンディショナーの吸気口、各種換気扇の排気口又は吸気口に貼着して使用される。 The pressure-sensitive adhesive may be applied to one entire surface of the nonwoven fabric ventilation filter, or may be applied to a part thereof. When applied to the entire surface, the amount of the adhesive applied is about 3 to 30 g / m 2 . Also, when the coating is applied to a part, the coating amount of this ratio may be used. FIG. 2 is a photomicrograph of a nonwoven fabric-permeable air-permeable filter obtained by the method according to the present invention, in which a whitish mass is the pressure-sensitive adhesive. Such a nonwoven fabric ventilation filter with an adhesive is used by being attached to a ventilation opening of a house, an intake opening of a range hood, an intake opening of an air conditioner, an exhaust opening or an intake opening of various ventilation fans.
本発明に係る方法によれば、不織布製通気フィルターの片面（裏面）に存在する構成繊維表面のみに粘着剤が付与され、構成繊維相互間の間隙には粘着剤が付与されない。したがって、不織布製通気フィルターに粘着剤を塗布しても通気性が低下しにくく、換気口等に貼着して使用した場合に、濾過性能が長寿命化するという効果を奏する。 According to the method of the present invention, the pressure-sensitive adhesive is applied only to the surface of the constituent fibers existing on one surface (back surface) of the nonwoven fabric-made ventilation filter, and the pressure-sensitive adhesive is not applied to the gap between the constituent fibers. Therefore, even if the pressure-sensitive adhesive is applied to the non-woven air-permeable filter, the air permeability is hardly reduced, and when the non-woven air-permeable filter is attached to a ventilation port or the like and used, the filtering performance is prolonged.
１ ダイヘッド
２ スリット
３ 不織布製通気フィルター
４ 流動状態の粘着剤
DESCRIPTION OF SYMBOLS 1 Die head 2 Slit 3 Non-woven fabric ventilation filter 4 Flowable adhesive
Claims (5)
ダイ塗布装置のダイヘッドに設けられたスリットに流動状態の粘着剤を供給する工程及び
前記スリットの出口に、実質的に無加圧の状態で前記不織布製通気フィルターの片面を接触させながら搬送する工程により、該片面に存在する構成繊維表面にのみ粘着剤を付与することを特徴とする不織布製通気フィルターへの粘着剤の塗布方法。 A step of preparing a non-woven air-permeable filter in which constituent fibers are accumulated and a gap is formed between the constituent fibers;
A step of supplying a pressure-sensitive adhesive in a flow state to a slit provided in a die head of a die coating apparatus; and a step of bringing one side of the nonwoven fabric ventilation filter into contact with an exit of the slit in a substantially non-pressurized state. Wherein the pressure-sensitive adhesive is applied only to the surface of the constituent fibers present on one side of the pressure-sensitive adhesive.
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| JP2017249719A JP6664651B2 (en) | 2017-12-26 | 2017-12-26 | Method of applying adhesive to nonwoven fabric ventilation filter |
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| JP2017249719A JP6664651B2 (en) | 2017-12-26 | 2017-12-26 | Method of applying adhesive to nonwoven fabric ventilation filter |
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| Publication Number | Publication Date |
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| JP2019115868A JP2019115868A (en) | 2019-07-18 |
| JP6664651B2 true JP6664651B2 (en) | 2020-03-13 |
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| JP3484490B2 (en) * | 1998-10-27 | 2004-01-06 | 日本ノンテックス株式会社 | Non-halogenated flame retardant filter material and method for producing the same |
| US6419747B1 (en) * | 1999-02-26 | 2002-07-16 | The Procter & Gamble Company | Extrusion die |
| JP2003058279A (en) * | 2001-08-17 | 2003-02-28 | Shohei Miyake | Exterior dustproof filter for computer and peripheral equipment |
| WO2010131580A1 (en) * | 2009-05-09 | 2010-11-18 | コニカミノルタホールディングス株式会社 | Coating method and organic electronic element |
| JP6280690B2 (en) * | 2012-12-27 | 2018-02-14 | 東洋アルミエコープロダクツ株式会社 | filter |
| JP2016190183A (en) * | 2015-03-31 | 2016-11-10 | 東洋アルミエコープロダクツ株式会社 | Filter structure |
| JP2017209593A (en) * | 2016-05-23 | 2017-11-30 | 清水建設株式会社 | Dust removing sheet and dust removal method |
| JP6534142B2 (en) * | 2016-11-02 | 2019-06-26 | 東洋アルミエコープロダクツ株式会社 | Air conditioner inlet filter |
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