WO2018056486A1 - Polyurethane hot-melt film having dot-coated adhesive layer - Google Patents
Polyurethane hot-melt film having dot-coated adhesive layer Download PDFInfo
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- WO2018056486A1 WO2018056486A1 PCT/KR2016/010735 KR2016010735W WO2018056486A1 WO 2018056486 A1 WO2018056486 A1 WO 2018056486A1 KR 2016010735 W KR2016010735 W KR 2016010735W WO 2018056486 A1 WO2018056486 A1 WO 2018056486A1
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- hot melt
- melt film
- adhesive
- polyurethane
- dot
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
Definitions
- the present invention is to coat the adhesive and the hot melt film by coating a polyurethane resin having a tacky adhesive on the hot melt film so that the press operation can be carried out without disturbing when moving to a no-sew press workshop or during a non-sewing process.
- the present invention relates to a polyurethane hot melt film having a pressure-sensitive adhesive function, and more particularly, an adhesive applied on a hot melt film by dot coating a water-soluble polyurethane resin or a water-soluble acrylic resin adhesive when forming an adhesive layer on the hot melt film. It relates to a polyurethane hot melt film having a dot-coated adhesive layer to minimize the application amount of the to improve the adhesion of the hot melt film.
- thermoplastic polyurethane As a hot melt film, polyurethane, a thermoplastic polyurethane, and thermoplastic polyethylene vinyl acetate resin are extruded into a film, and it is used a lot.
- the non-sewing manufacturing process using the hot melt film is not only in line with the concept of automation desired by shoe manufacturers due to the small number of work inputs compared to the sewing process or the process using the bond, but also economical and lightweight. Due to its merits, it is continuously applied to the footwear industry, and derivative technologies are continuously developed to show various products.
- This work process is mainly carried out by two kinds of manual processes.
- the first is that the worker presses a hot melt film-inserted adhesive part with heat using a device such as a soldering iron so that it is welded so as not to be disturbed during movement.
- a device such as a soldering iron
- the second uses a method in which the worker physically fixes the position of the adherend by using a fixing plate (or fixing pin) so as not to be disturbed during movement.
- Patent Document 1 Published Patent Publication No. 10-2014-0147631 (Invention name: Method for producing a thermoplastic polyurethane hot melt film and a thermoplastic polyurethane hot melt film produced by the above method. Publication date: December 2014 30 Work)
- Patent Document 2 Published Patent Publication No. 10-2015-0005092 (Invention name: thermoplastic polyurethane hot melt film. Publication date: January 14, 2015)
- Patent Document 3 Published Patent Publication No. 10-2011-0045162 (Invention name: Method for producing a hot melt film recycled airbag scrap for shoes and a hot melt film produced by the above method. Publication date: May 2011 04th)
- Patent Document 4 Publication No. 10-2014-0067366 (Invention name: Composition of hot melt film for epoxy bonding. Publication date: June 05, 2014)
- the present invention is to solve the problems of the prior art as described above, by coating the polyurethane resin or acrylic resin pressure-sensitive adhesive on the hot melt film in a dot (Dot) method to adhere the adhesive and the hot melt film at the time of cutting when moving
- Dot dot
- the present invention implements a hot melt film used when manufacturing shoes in a non-sewing process, wherein the hot melt film and the adhesive on the surface of the hot melt film, the adhesive to fix the hot melt film and the adhesive before the sewing process It is characterized in that the coating treatment in a dot coating method.
- the present invention implements a hot melt film used when manufacturing shoes in a non-sewing process, wherein the hot melt film and the adhesive on the surface of the hot melt film, the adhesive to fix the hot melt film and the adhesive before the sewing process It is characterized in that the coating treatment by dry coating or gravure coating method.
- Pressure-sensitive adhesives used when manufacturing the hot melt film according to the present invention include a polyurethane resin pressure-sensitive adhesive and an acrylic resin pressure-sensitive adhesive, the polyurethane resin pressure-sensitive adhesive using a polyester polyol having a molecular weight of 4,000 or more and aliphatic isocyanate and amine as a chain extender ( It is characterized in that it is a water-soluble polyurethane adhesive polymerized using as a chain extender).
- the acrylic resin pressure-sensitive adhesive used in the present invention is prepared by using any one acrylic monomer selected from acrylic acid, hydroxyl acrylic acid, methyl acrylate, ethyl acrylate, ethyl hexyl acrylate, 2-hydroxy ethyl acrylate, methyl metacrylate alone. It is characterized in that it is a water-soluble acrylic resin adhesive or a water-soluble acrylic resin adhesive prepared by mixing them.
- the present invention is a coating treatment of the adhesive polyurethane resin or acrylic resin adhesive on the TPU hot melt film or UP hot melt film by inserting and cutting the hot melt film between the adhesive for the sewing process, and then to the place for the press operation Not to be distracted during movement, as well as the adherend is fixed during the cutting work, it is possible to reduce the cost of the product due to the labor cost and streamlining the process, there is an advantage that can implement the automated process in the shoe manufacturing industry.
- the present invention is a dot coating treatment when applying a polyurethane resin or an acrylic resin adhesive on a hot melt film by coating a minimum amount of the adhesive on the hot melt film while being deposited with a hot melt film during a No-Sew press operation.
- a synergistic effect that can increase the adhesion so that I do not fall.
- FIG. 1 is a view showing the main configuration of a polyurethane hot melt film coated with a polyurethane resin or an acrylic resin adhesive on a hot melt film by a dot coating method according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a polyurethane hot melt film having a dot coated adhesive layer shown in FIG. 1.
- the hot melt film when the adhesive layer is formed on the hot melt film, the hot melt film is inserted between the adherend and the adherend by applying a dot coating method and the hot melt film is adhered by a no-sew press operation. It characterized in that the polyurethane hot-melt film having a pressure-sensitive adhesive layer coated with a dot-coated adhesive layer that can prevent the adhesive force from falling.
- the adhesive when manufacturing a shoe by a no-sew process, inserting a hot melt film between the adhesive and cutting it, and then, when moving the adhesive to the workplace installed a press device for thermal compression, the adhesive The hot melt film is fixed at the same position and moved without distractions, so that it can be performed without sewing.
- a resin having adhesiveness is coated on the hot melt film and the adhesive and the hot melt film are adhered to the cutting work.
- a polyurethane hot melt film having a dot-coated adhesive layer to prevent the adhesive and the hot melt film from being dislodged even when moving to a location where the sewing process and the press device are not performed.
- the adhesive layer on the hot melt film as described above by applying a dot coating method (for example, fabric or synthetic leather, etc.) and the adhesive (for example, shoe upper, etc.)
- a dot coating method for example, fabric or synthetic leather, etc.
- the adhesive for example, shoe upper, etc.
- Dot-coated adhesive that prevents the adhesive force from falling off by the adhesive coated on the hot-melt film when the hot-melt film is inserted between the sheets and adhered by a no-sew press operation.
- a polyurethane hotmelt film with layers is presented.
- the present invention can improve the adhesion of the hot melt film by dot coating the pressure-sensitive adhesive on the polyurethane hot melt film as above, in particular, dot coating on the hot melt film using a water-soluble polyurethane resin or water-soluble acrylic resin pressure-sensitive adhesive as the pressure-sensitive adhesive It is intended to implement a treated hot melt film.
- Hot melt film according to the present invention is based on a hot melt film made of thermoplastic polyurethane or polyurethane resin as shown in Figure 1 and 2, the bottom of the hot melt film is a conventional paper or PP, PE release paper is attached On the upper surface of the hot melt film, a polyurethane adhesive or an acrylic adhesive corresponding to an essential component of the present invention is applied by a dot coating method, and a conventional paper or PP or PE release agent is attached thereto.
- the pressure-sensitive adhesive may be treated without gravure coating.
- the polyurethane pressure sensitive adhesive or acrylic pressure sensitive adhesive according to the present invention is a resin having an adhesive function, and preferably a polyurethane resin or an acrylic resin pressure sensitive adhesive is coated on a hot melt film, and is used in a press operation for a no-sew process. Or it serves to prevent the adherend and hot melt film from being disturbed when moving to the press workshop.
- the thickness of the polyurethane adhesive or acrylic adhesive is preferably not to exceed 20 ⁇ m (Max 0.02mm) maximum, the reason is that when the thickness of the adhesive exceeds 20 ⁇ m the final No-Sew process This is because the adhesive force of the hot-melt film is lowered by the pressure-sensitive adhesive component even when the press work is performed, in particular, even when thermally compressed at a pressure of at least 2.5 kgf / cm 2. Therefore, in this invention, the thickness of a polyurethane adhesive or an acrylic adhesive was made into the maximum 20 micrometers, and the thickness of a hot melt film was 0.05-0.30 mm.
- the present invention after preparing a hot melt film and the adhesive (for example, fabric or synthetic leather, etc.) configured as described above, the release paper is attached to the pressure-sensitive adhesive layer (preferably polyurethane or acrylic pressure-sensitive adhesive layer) of the hot melt film. Peel off and overlap with the adhesive and cut together at the same time.
- the adhesive for example, fabric or synthetic leather, etc.
- the hot melt film and the adherend are directly fixed by a polyurethane adhesive or an acrylic adhesive, without going through a method of fixing with a fixing plate (fixing pin) or by welding with iron to fix the adherend to the hot melt film as in the prior art.
- the adherend is moved to the press working place, and then the release paper adhered to the bottom of the hot melt film is peeled off and adhered to another adherent, and then, in a conventional press operation, for example, 60 kgf for 30 seconds at 130 ° C.
- the shoe is manufactured by a non-sewing process by thermal pressing at a pressure of. In this case, the press working conditions for the sewing process can be changed depending on the melting point of the hot melt film and the type of fabric.
- composition of the polyurethane adhesive according to the present invention is shown in Table 1 below.
- composition Details Content (% by weight) Polyol Polyester Polyol of molecular weight 4,000 or more 18.0 Isocyanate Aliphatic Isocyanate 8.0 water Distilled water 65.0 Surfactant Ethoxylated Polypropylene Oxide 2.0 Tackifier Rosin type 7.0
- the polyurethane pressure-sensitive adhesive of the present invention uses an aliphatic isocyanate and an amine as a chain extender while using a polyester polyol having a molecular weight of 4,000 or more, and is an ethoxylated polypropylene as a surfactant.
- a water-soluble polyurethane pressure-sensitive adhesive was prepared by reacting these with an oxide and using rosin as a tackifier.
- rosin type 7.0 wt% is used as a tackifier, if the maximum exceeds 15% by weight tacky (Tacky) was too severe there was a problem in processing.
- Acrylic pressure-sensitive adhesive to be implemented in the present invention can be made by copolymerizing a variety of acrylic monomers, representative acrylic monomers are acrylic acid, hydroxyl acrylic acid, methyl acrylate, ethyl acrylate, ethyl hexyl acrylate, 2-hydroxy ethyl acrylate, methyl metacrylate, etc. It is very versatile, and these alone or mixed to prepare a resin of strong adhesion.
- step (2) Simultaneously dropping the mixed solution prepared in step (2) and step (3) to the reaction tank of step (1) while dropping for 2 hours while heating to 85-90 ° C., and then polymerizing it at 85 ° C. for 1 hour. After aging, the acrylic base pressure-sensitive adhesive of the present invention is prepared by cooling it again to terminate the reaction.
- the method of dot coating the polyurethane pressure-sensitive adhesive or acrylic base pressure-sensitive adhesive of the present invention on a TPU hot melt film or PU film produced by a conventional method is as follows.
- the hot melt film is coated by a conventional dot printing method using a dot-shaped printing plate or a printing machine.
- the method for preparing a hot melt film by coating the polyurethane pressure sensitive adhesive or the acrylic pressure sensitive adhesive of the present invention on a TPU hot melt film or a PU film prepared by a conventional method is as follows: 1) a method of laminating after dry coating, and 2) gravure coating. There is a way.
- adheresive Method of laminating after dry coating, first, after the polyurethane coating or acrylic adhesive of the present invention (hereinafter referred to as "adhesive") dry coating on a release paper and dried, and then the dry-coated adhesive film, preferably the maximum An adhesive film having a thickness of 20 ⁇ m is combined on the surface of the TPU hot melt film (or PU hot melt film) using a normal roll aeration machine.
- the combined working conditions are the temperature 100 ⁇ 5 °C, the pressure 50 ⁇ 60kgf, the line speed (line speed) 2 ⁇ 4m / min.
- the polyurethane adhesive or the acrylic base of the present invention is dried after gravure coating on a TPU hot melt film (or PU film). At this time, the thickness of the polyurethane adhesive does not exceed 20 ⁇ m maximum.
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Abstract
The present invention provides a polyurethane hot-melt film having a dot-coated adhesive layer, wherein, when an adhesive layer is formed on a hot-melt film, the same is applied in a dot coating type such that, when the hot-melt film is inserted between a material to be attached (for example, a raw fabric or synthetic leather) and another material to be attached (for example, a shoe upper), and when the materials are attached through a no-sew press operation, the adhesive coating on the hot-melt film can prevent degradation of the attaching force.
Description
본 발명은 핫멜트 필름 위에 점착성을 가지는 폴리우레탄 수지를 코팅 처리하여 피착제와 핫멜트 필름을 점착시켜 무제봉(No-Sew) 프레스 작업장까지 이동시 또는 무재봉 공정시에 흐트러짐 없이 프레스 작업을 수행할 수 있도록 하는 점착 기능을 가지는 폴리우레탄 핫멜트 필름에 관한 것으로서, 더욱 상세하게는 핫멜트 필름 위에 점착층을 형성할 때 수용성 폴리우레탄 수지 또는 수용성 아크릴 수지 점착제를 도트 코팅(Dot Coating) 처리함으로써 핫멜트 필름 위에 도포되는 점착제의 도포량을 최소화하여 핫멜트 필름의 접착력을 향상시킬 수 있도록 하는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름에 관한 것이다.The present invention is to coat the adhesive and the hot melt film by coating a polyurethane resin having a tacky adhesive on the hot melt film so that the press operation can be carried out without disturbing when moving to a no-sew press workshop or during a non-sewing process. The present invention relates to a polyurethane hot melt film having a pressure-sensitive adhesive function, and more particularly, an adhesive applied on a hot melt film by dot coating a water-soluble polyurethane resin or a water-soluble acrylic resin adhesive when forming an adhesive layer on the hot melt film. It relates to a polyurethane hot melt film having a dot-coated adhesive layer to minimize the application amount of the to improve the adhesion of the hot melt film.
잘 알려진 바와 같이, 현대생활의 필수품인 신발은 최근 첨단화, 패션화되어가는 경향이 점점 강해지고 있다. 과거에는 그 기능이 단순하고 특별한 기능성을 가지지 않는 단순한 신발이 주류를 이루었으나, 최근에는 착화감, 충격 완충, 경량성 등의 기능이 혁신적으로 향상된 고부가 가치의 신발들이 주류를 이루고 있으며, 현대인들의 생활수준이 향상됨에 따라 이에 대한 수요가 점점 많아지고 있다. 또한, 신발이 패션의 한 가닥을 이루고 있어 다양한 디자인의 신발이 개발되고 새로운 개념들이 신발의 개발에 접목되고 있다.As is well known, footwear, a necessity of modern life, is becoming more and more recently advanced and fashioned. In the past, simple shoes with simple functions and no special functions have become mainstream, but recently, high value-added shoes with innovative improvements in ignition, shock buffer, and light weight have become mainstream. As this improves, there is an increasing demand for it. In addition, since shoes form a strand of fashion, shoes of various designs are developed and new concepts are incorporated into the development of shoes.
한편으로는 신발의 경량화 제조 공정의 단순화 또한 개발의 주된 관심 사항 중의 하나로 다양한 시도들이 있어왔다. 경량화의 목적을 달성하기 위해서는 가벼운 소재를 사용하거나 디자인을 변경하여 적은 양의 소재를 사용하여 기존과 유사한 효과를 내는 방법을 연구하였다.On the one hand, there have been various attempts to simplify the manufacturing process of lightweight footwear, which is one of the main concerns of development. In order to achieve the purpose of weight reduction, we studied how to use a light material or change the design to produce a similar effect using a small amount of material.
이와 같이 신발을 제조하는 공정의 단순화를 위해 최근에 가장 많은 관심을 받고 있는 부분은 제조 공정 중 가장 많은 인력과 시간이 소요되는 재봉 공정을 간편화하거나 재봉 공정 없이 접착만으로 신발을 제조하는 기술에 대한 연구가 많이 이루어지고 있으며, 상당 부분 실제 적용이 되고 있으며 급격히 늘어나고 있는 추세이다.In order to simplify the manufacturing process of shoes, the most recently received part is the research on the technology of manufacturing shoes by simply simplifying the sewing process that requires the most manpower and time in the manufacturing process or by gluing without sewing process. Is being done a lot, and it is being applied to a substantial portion and is increasing rapidly.
한편, 신발을 제조할 때 재봉 공정을 없애고 무재봉(No-Sew) 공정으로 신발을 만들기 위해서는 접착제의 사용이 필수적인데 일반적인 액상의 접착제를 사용하는 것은 건조 공정을 거쳐야 하고 섬유 원단의 종류에 따라서는 적용이 불가능한 경우가 많이 있다.On the other hand, the use of adhesives is essential to eliminate the sewing process and make shoes with a no-sew process when manufacturing shoes. The use of general liquid adhesives has to go through a drying process. There are many cases where this is not possible.
이에 따라 핫멜트 필름(Hot Melt Film)을 원단이나 합성피혁 등의 피착제에 접착시킨 후, 이를 기재(예를 들면, 신발의 갑피)의 표면에 프레스 작업으로 열 압착하여 접착시키는 공정이 대안으로 사용되고 있다.Accordingly, a process of adhering a hot melt film to an adhesive such as fabric or synthetic leather and then thermally compressing and bonding the hot melt film to the surface of the substrate (for example, the upper of a shoe) by pressing is used. have.
핫멜트 필름으로는 폴리우레탄이나 열가소성 폴리우레탄, 열가소성 폴리에틸렌비닐아세테이트 수지를 필름으로 압출하여 많이 사용하고 있다. 이러한 핫멜트 필름을 이용한 무재봉 제조공정은 재봉 공정이나 본드를 사용하는 공정 대비 투입되는 작업 인원수가 크게 적어 신발 제조사들이 원하고 있는 자동화의 개념에 부합할 뿐만 아니라 제조비용 절감의 경제적인 효과와 경량화의 장점으로 인해 꾸준히 신발산업 분야에 적용되고 있으며, 파생 기술들도 끊임없이 발전되어 다양한 제품들을 선보이고 있다.As a hot melt film, polyurethane, a thermoplastic polyurethane, and thermoplastic polyethylene vinyl acetate resin are extruded into a film, and it is used a lot. The non-sewing manufacturing process using the hot melt film is not only in line with the concept of automation desired by shoe manufacturers due to the small number of work inputs compared to the sewing process or the process using the bond, but also economical and lightweight. Due to its merits, it is continuously applied to the footwear industry, and derivative technologies are continuously developed to show various products.
하지만, 위와 같은 무재봉(No-Sew) 공정의 경우에도 접착을 원하는 피착제(예를 들어, 원단이나 합성피혁 등) 사이에 핫멜트 필름을 삽입하고 이를 고정하기 위한 추가적인 작업공정이 요구된다. 구체적으로는, 피착제와 핫멜트 필름을 원하는 사이즈로 재단한 다음, 이를 프레스 장치가 설치된 작업장(즉, No-Sew 공정을 위한 열 압착 프레스 작업이 이루어지는 프레스 장치가 설치된 작업장)까지 이동하는 과정에서 피착제와 핫멜트 필름이 동일한 위치에 고정되어 흐트러지지 않도록 하기 위해 작업자가 일일이 수작업으로 피착제와 핫멜트 필름의 위치를 고정시키는 작업을 진행하고 있다.However, even in the case of the above-mentioned no-sew process, an additional work process is required for inserting a hot melt film between the adhesives (eg, fabric or synthetic leather, etc.) desired for adhesion and fixing the same. Specifically, the adhesive and the hot melt film are cut to a desired size, and then deposited in the process of moving to the work place where the press device is installed (that is, the work place where the press device in which the thermo-compression press work is performed for the No-Sew process is installed). In order to prevent the agent and the hot melt film from being fixed at the same position, the worker is working to manually fix the position of the adhesive and the hot melt film by hand.
이와 같은 작업공정은 크게 두 가지 정도의 수작업 공정으로 진행되고 있는데, 첫 번째는 작업자가 인두 같은 장비를 사용하여 핫멜트 필름이 삽입된 피착제를 부분적으로 열로 눌러서 접착시켜서 이동시에 흐트러지지 않도록 가접을 하는 방법이 있으며, 두 번째는 작업자가 고정판(또는 고정핀)을 사용하여 상기 피착제의 위치를 물리적으로 고정시킴으로써 이동시 흐트러지지 않도록 하는 방법을 사용하고 있다.This work process is mainly carried out by two kinds of manual processes. The first is that the worker presses a hot melt film-inserted adhesive part with heat using a device such as a soldering iron so that it is welded so as not to be disturbed during movement. There is a method, and the second uses a method in which the worker physically fixes the position of the adherend by using a fixing plate (or fixing pin) so as not to be disturbed during movement.
그러나 상기와 같은 방법들 모두 신발제조산업의 자동화 개념에 부합되지 않는 수작업이므로 작업인원의 수요가 많이 요구될 뿐만 아니라 피착제와 핫멜트 필름을 원하는 사이즈로 재단한 후 고정시 일일이 수작업으로 진행해야만 하기 때문에 인건비가 상승하게 되고 또한 공정 추가에 따른 신발 단가를 상승시키는 요인으로 작용하고 있다.However, all of the above methods are manual work that does not meet the automation concept of the shoe manufacturing industry. Therefore, not only the demand of the workforce is required but also the manual and manual fixing of the adhesive and hot melt film to the desired size is required. Labor costs are rising and the price of shoes is rising.
[선행기술문헌][Preceding technical literature]
[특허문헌][Patent Documents]
(특허문헌 1) 공개특허공보 공개번호 제10-2014-0147631호(발명의 명칭: 열가소성 폴리우레탄 핫멜트 필름의 제조방법 및 상기 방법으로 제조된 열가소성 폴리우레탄 핫멜트 필름. 공개일자: 2014년 12월 30일)(Patent Document 1) Published Patent Publication No. 10-2014-0147631 (Invention name: Method for producing a thermoplastic polyurethane hot melt film and a thermoplastic polyurethane hot melt film produced by the above method. Publication date: December 2014 30 Work)
(특허문헌 2) 공개특허공보 공개번호 제10-2015-0005092호(발명의 명칭: 열가소성 폴리우레탄 핫멜트 필름. 공개일자: 2015년 01월 14일)(Patent Document 2) Published Patent Publication No. 10-2015-0005092 (Invention name: thermoplastic polyurethane hot melt film. Publication date: January 14, 2015)
(특허문헌 3) 공개특허공보 공개번호 제10-2011-0045162호(발명의 명칭: 신발용 에어백 스크랩을 재활용한 핫멜트 필름의 제조 방법 및 상기 방법으로 제조된 핫멜트 필름. 공개일자: 2011년 05월 04일)(Patent Document 3) Published Patent Publication No. 10-2011-0045162 (Invention name: Method for producing a hot melt film recycled airbag scrap for shoes and a hot melt film produced by the above method. Publication date: May 2011 04th)
(특허문헌 4) 공개특허공보 공개번호 제10-2014-0067366호(발명의 명칭: 에폭시 접착용 핫멜트 필름의 조성물. 공개일자: 2014년 06월 05일)(Patent Document 4) Publication No. 10-2014-0067366 (Invention name: Composition of hot melt film for epoxy bonding. Publication date: June 05, 2014)
본 발명은 위와 같은 종래기술의 문제점을 해결하기 위한 것으로, 핫멜트 필름 위에 점착성을 가지는 폴리우레탄 수지 또는 아크릴 수지 점착제를 도트(Dot) 방식으로 코팅 처리하여 피착제와 핫멜트 필름을 제단시 바로 점착시킴으로써 이동시에 흐트러짐이 없도록 함은 물론 핫멜트 필름의 접착력을 향상시킬 수 있도록 하는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름을 제공하는데 그 목적이 있다.The present invention is to solve the problems of the prior art as described above, by coating the polyurethane resin or acrylic resin pressure-sensitive adhesive on the hot melt film in a dot (Dot) method to adhere the adhesive and the hot melt film at the time of cutting when moving It is an object of the present invention to provide a polyurethane hot melt film having a dot-coated adhesive layer that can improve the adhesive force of the hot melt film as well as to avoid any drift.
본 발명은 무재봉 공정으로 신발을 제조할 때 사용되는 핫멜트 필름을 구현함에 있어서, 상기 핫멜트 필름의 표면에는 상기 핫멜트 필름과 피착제가 상기 무재봉 공정 전에 상기 핫멜트 필름과 피착제를 고정하기 위해 점착제를 도트 코팅 방식으로 코팅 처리하는 것을 특징으로 한다.The present invention implements a hot melt film used when manufacturing shoes in a non-sewing process, wherein the hot melt film and the adhesive on the surface of the hot melt film, the adhesive to fix the hot melt film and the adhesive before the sewing process It is characterized in that the coating treatment in a dot coating method.
본 발명은 무재봉 공정으로 신발을 제조할 때 사용되는 핫멜트 필름을 구현함에 있어서, 상기 핫멜트 필름의 표면에는 상기 핫멜트 필름과 피착제가 상기 무재봉 공정 전에 상기 핫멜트 필름과 피착제를 고정하기 위해 점착제를 건식 코팅 또는 그라비아 코팅 방식으로 코팅 처리하는 것을 특징으로 한다.The present invention implements a hot melt film used when manufacturing shoes in a non-sewing process, wherein the hot melt film and the adhesive on the surface of the hot melt film, the adhesive to fix the hot melt film and the adhesive before the sewing process It is characterized in that the coating treatment by dry coating or gravure coating method.
본 발명에 따른 핫멜트 필름을 제조할 때 사용되는 점착제로는 폴리우레탄 수지 점착제와 아크릴 수지 점착제가 있으며, 상기 폴리우레탄 수지 점착제는 분자량 4,000 이상의 폴리에스테르 폴리올을 사용하고 지방족 이소시아네이트와 아민을 쇄연장제(Chain Extender)로 사용하여 중합한 수용성 폴리우레탄 점착제임을 특징으로 한다.Pressure-sensitive adhesives used when manufacturing the hot melt film according to the present invention include a polyurethane resin pressure-sensitive adhesive and an acrylic resin pressure-sensitive adhesive, the polyurethane resin pressure-sensitive adhesive using a polyester polyol having a molecular weight of 4,000 or more and aliphatic isocyanate and amine as a chain extender ( It is characterized in that it is a water-soluble polyurethane adhesive polymerized using as a chain extender).
또한, 본 발명에서 사용되는 아크릴 수지 점착제는 acrylic acid, hydroxyl acrylic acid, methyl acrylate, ethyl acrylate, ethyl hexyl acrylate, 2-hydroxy ethyl acrylate, methyl metacrylate 중에서 선택된 어느 하나의 아크릴 단량체를 단독으로 사용하여 제조된 수용성 아크릴 수지 점착제이거나 또는 이들을 혼합하여 제조된 수용성 아크릴 수지 점착제임을 특징으로 한다.In addition, the acrylic resin pressure-sensitive adhesive used in the present invention is prepared by using any one acrylic monomer selected from acrylic acid, hydroxyl acrylic acid, methyl acrylate, ethyl acrylate, ethyl hexyl acrylate, 2-hydroxy ethyl acrylate, methyl metacrylate alone. It is characterized in that it is a water-soluble acrylic resin adhesive or a water-soluble acrylic resin adhesive prepared by mixing them.
본 발명은 TPU 핫멜트 필름 또는 UP 핫멜트 필름 위에 점착성을 가지는 폴리우레탄 수지 또는 아크릴 수지 점착제를 코팅 처리함으로써 무재봉 공정을 위해 핫멜트 필름을 피착제 사이에 삽입하고 재단한 다음, 이를 프레스 작업을 위한 장소까지 이동시에 흐트러지지 않도록 함은 물론 재단 작업시 피착제가 고정되어 있으므로 인건비 및 공정의 간소화로 인해 제품의 원가를 절감할 수 있고, 신발제조산업에서 자동화 공정을 구현할 수 있는 장점이 있다.The present invention is a coating treatment of the adhesive polyurethane resin or acrylic resin adhesive on the TPU hot melt film or UP hot melt film by inserting and cutting the hot melt film between the adhesive for the sewing process, and then to the place for the press operation Not to be distracted during movement, as well as the adherend is fixed during the cutting work, it is possible to reduce the cost of the product due to the labor cost and streamlining the process, there is an advantage that can implement the automated process in the shoe manufacturing industry.
특히, 본 발명은 핫멜트 필름 위에 폴리우레탄 수지 또는 아크릴 수지 점착제를 도포할 때 도트 코팅(Dot Coating) 처리함으로써 상기 핫멜트 필름 위에 점착제를 최소량 도포하면서도 무재봉(No-Sew) 프레스 작업시 핫멜트 필름과 피착제가 떨어지지 않도록 접착력을 높일 수 있는 상승적인 효과가 있다.In particular, the present invention is a dot coating treatment when applying a polyurethane resin or an acrylic resin adhesive on a hot melt film by coating a minimum amount of the adhesive on the hot melt film while being deposited with a hot melt film during a No-Sew press operation. There is a synergistic effect that can increase the adhesion so that I do not fall.
도 1은 본 발명의 바람직한 일 실시 예에 따른 도트 코팅(Dot Coating) 방식으로 핫멜트 필름 위에 폴리우레탄 수지 또는 아크릴 수지 점착제를 코팅 처리한 폴리우레탄 핫멜트 필름의 주요구성을 보여주고 있는 도면.1 is a view showing the main configuration of a polyurethane hot melt film coated with a polyurethane resin or an acrylic resin adhesive on a hot melt film by a dot coating method according to an embodiment of the present invention.
도 2는 도 1에서 도시한 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름의 단면을 보여주고 있는 도면.FIG. 2 is a cross-sectional view of a polyurethane hot melt film having a dot coated adhesive layer shown in FIG. 1.
본 발명은 핫멜트 필름 위에 점착층을 형성할 때 도트 코팅(Dot Coating) 방식으로 도포함으로써 피착제와 피착제 사이에 핫멜트 필름을 삽입하고 무재봉(No-Sew) 프레스 작업으로 접착시킬 때 상기 핫멜트 필름에 코팅된 점착제 의해 접착력이 떨어지는 것을 방지할 수 있는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름을 특징으로 하는 것이다.In the present invention, when the adhesive layer is formed on the hot melt film, the hot melt film is inserted between the adherend and the adherend by applying a dot coating method and the hot melt film is adhered by a no-sew press operation. It characterized in that the polyurethane hot-melt film having a pressure-sensitive adhesive layer coated with a dot-coated adhesive layer that can prevent the adhesive force from falling.
이하 본 발명의 바람직한 실시 예를 구체적으로 설명하면 다음과 같다. 후술 될 상세한 설명에서는 상술한 기술적 과제를 이루기 위해 본 발명에 있어 대표적인 실시 예를 제시할 것이다. 그리고 본 발명으로 제시될 수 있는 다른 실시 예들은 본 발명의 구성에서 설명으로 대체한다.Hereinafter, a preferred embodiment of the present invention will be described in detail. In the following description will be presented a representative embodiment in the present invention to achieve the above technical problem. And other embodiments that can be presented with the present invention are replaced by the description in the configuration of the present invention.
본 발명에서는 무재봉(No-Sew) 공정으로 신발을 제조할 때 피착제 사이에 핫멜트 필름을 삽입하고 이를 재단한 다음, 열 압착을 위한 프레스 장치가 설치된 작업장까지 피착제를 이동할 때, 상기 피착제와 핫멜트 필름이 동일한 위치에 고정되어 흐트러짐 없이 이동시킨 후 이를 무재봉 공정을 수행할 수 있도록 하기 위한 것으로, 이를 위해서 핫멜트 필름 위에 점착성을 가지는 수지를 코팅 처리하여 피착제와 핫멜트 필름을 점착시켜 재단작업이나 무재봉 공정 및 프레스 장치가 있는 위치까지 이동시에도 피착제와 핫멜트 필름이 흐트러지지 않도록 하는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름을 구현하고자 한다.In the present invention, when manufacturing a shoe by a no-sew process, inserting a hot melt film between the adhesive and cutting it, and then, when moving the adhesive to the workplace installed a press device for thermal compression, the adhesive The hot melt film is fixed at the same position and moved without distractions, so that it can be performed without sewing. For this purpose, a resin having adhesiveness is coated on the hot melt film and the adhesive and the hot melt film are adhered to the cutting work. In order to realize a polyurethane hot melt film having a dot-coated adhesive layer to prevent the adhesive and the hot melt film from being dislodged even when moving to a location where the sewing process and the press device are not performed.
특히, 본 발명에서는 위와 같이 핫멜트 필름 위에 점착층을 형성할 때 도트 코팅(Dot Coating) 방식으로 도포함으로써 피착제(예를 들어, 원단이나 합성피혁 등)와 피착제(예를 들어, 신발 갑피 등) 사이에 핫멜트 필름을 삽입하고 무재봉(No-Sew) 프레스 작업으로 접착시킬 때 상기 핫멜트 필름에 코팅된 점착제에 의해 접착력이 떨어지는 것을 방지하면서도 위에서 제시한 기술적 특징을 구현할 수 있도록 하는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름을 제시한다.In particular, in the present invention, when forming the adhesive layer on the hot melt film as described above by applying a dot coating method (for example, fabric or synthetic leather, etc.) and the adhesive (for example, shoe upper, etc.) Dot-coated adhesive that prevents the adhesive force from falling off by the adhesive coated on the hot-melt film when the hot-melt film is inserted between the sheets and adhered by a no-sew press operation. A polyurethane hotmelt film with layers is presented.
바람직하게는, 본 발명은 위와 같이 폴리우레탄 핫멜트 필름 위에 점착제를 도트 코팅 처리함으로써 핫멜트 필름의 접착력을 향상시킬 수 있으며, 특히 점착제로 수용성 폴리우레탄 수지 또는 수용성 아크릴 수지 점착제를 사용하여 핫멜트 필름에 도트 코팅 처리한 핫멜트 필름을 구현하고자 한다.Preferably, the present invention can improve the adhesion of the hot melt film by dot coating the pressure-sensitive adhesive on the polyurethane hot melt film as above, in particular, dot coating on the hot melt film using a water-soluble polyurethane resin or water-soluble acrylic resin pressure-sensitive adhesive as the pressure-sensitive adhesive It is intended to implement a treated hot melt film.
아래에서는 본 발명의 바람직한 실시 예를 도 1과 도 2를 참조하여 상세히 설명하고자 한다.Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.
도 1과 도 2는 본 발명에 따른 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름의 단면을 보여주고 있는 도면이다. 본 발명에 따른 핫멜트 필름은 도 1과 도 2에서 보는 바와 같이 열가소성 폴리우레탄 또는 폴리우레탄 수지로 제조된 핫멜트 필름을 베이스로 하고, 상기 핫멜트 필름의 저면에는 통상의 종이 또는 PP, PE 이형지가 부착되며, 상기 핫멜트 필름의 상면에는 본 발명의 필수구성요소에 해당하는 폴리우레탄 점착제 또는 아크릴 점착제가 도트 코팅(Dot Coating) 방식으로 도포되고, 그 위에는 통상적인 종이 또는 PP, PE 이형제가 부착된다. 이때, 본 발명에서는 점착제를 도트 코팅 처리하지 않고 그라비아 코팅 처리할 수도 있다.1 and 2 are cross-sectional views of a polyurethane hot melt film having a dot-coated adhesive layer according to the present invention. Hot melt film according to the present invention is based on a hot melt film made of thermoplastic polyurethane or polyurethane resin as shown in Figure 1 and 2, the bottom of the hot melt film is a conventional paper or PP, PE release paper is attached On the upper surface of the hot melt film, a polyurethane adhesive or an acrylic adhesive corresponding to an essential component of the present invention is applied by a dot coating method, and a conventional paper or PP or PE release agent is attached thereto. In this case, in the present invention, the pressure-sensitive adhesive may be treated without gravure coating.
본 발명에 따른 폴리우레탄 점착제 또는 아크릴 점착제는 점착 기능을 가지는 수지로서, 바람직하게는 폴리우레탄 수지 또는 아크릴 수지 점착제를 핫멜트 필름에 코팅 처리한 것인데, 무재봉(No-Sew) 공정을 위한 프레스 작업시 또는 프레스 작업장까지 이동시에 피착제와 핫멜트 필름이 흐트러지지 않도록 하는 역할을 한다. The polyurethane pressure sensitive adhesive or acrylic pressure sensitive adhesive according to the present invention is a resin having an adhesive function, and preferably a polyurethane resin or an acrylic resin pressure sensitive adhesive is coated on a hot melt film, and is used in a press operation for a no-sew process. Or it serves to prevent the adherend and hot melt film from being disturbed when moving to the press workshop.
이때, 상기 폴리우레탄 점착제 또는 아크릴 점착제의 두께는 최대 20㎛(Max 0.02mm)를 넘지 않도록 하는 것이 바람직하며, 그 이유는 점착제의 두께가 20㎛를 넘게 되면 최종 무재봉(No-Sew) 공정을 위한 프레스 작업시, 구체적으로는 최소 2.5kgf/㎠의 압력으로 열 압착시에도 점착제 성분에 의해 핫멜트 필름의 접착력이 낮아지기 때문이다. 따라서 본 발명에서는 폴리우레탄 점착제 또는 아크릴 점착제의 두께를 최대 20㎛로 하고 핫멜트 필름의 두께를 0.05~0.30mm로 하였다.At this time, the thickness of the polyurethane adhesive or acrylic adhesive is preferably not to exceed 20㎛ (Max 0.02mm) maximum, the reason is that when the thickness of the adhesive exceeds 20㎛ the final No-Sew process This is because the adhesive force of the hot-melt film is lowered by the pressure-sensitive adhesive component even when the press work is performed, in particular, even when thermally compressed at a pressure of at least 2.5 kgf / cm 2. Therefore, in this invention, the thickness of a polyurethane adhesive or an acrylic adhesive was made into the maximum 20 micrometers, and the thickness of a hot melt film was 0.05-0.30 mm.
한편, 본 발명은 위와 같이 구성된 핫멜트 필름과 피착제(예를 들어, 원단이나 합성피혁 등)를 준비한 다음, 상기 핫멜트 필름의 점착제 층(바람직하게는, 폴리우레탄 또는 아크릴 점착제 층)에 붙어있는 이형지를 벗겨내고 피착제와 겹쳐서 함께 동시에 재단한다.On the other hand, the present invention after preparing a hot melt film and the adhesive (for example, fabric or synthetic leather, etc.) configured as described above, the release paper is attached to the pressure-sensitive adhesive layer (preferably polyurethane or acrylic pressure-sensitive adhesive layer) of the hot melt film. Peel off and overlap with the adhesive and cut together at the same time.
이렇게 하면 종래와 같이 핫멜트 필름에 피착제를 고정하기 위해 고정판(고정핀)으로 고정하거나 인두작업으로 가접하는 방법을 거치지 않고도 핫멜트 필름과 피착제는 폴리우레탄 점착제 또는 아크릴 점착제에 의해 곧바로 고정된다. 이후, 상기 피착제를 프레스 작업 장소까지 이동시킨 다음, 핫멜트 필름의 저면에 붙어있는 이형지를 벗겨내고 또 다른 피착제에 접착시킨 후, 통상적인 프레스 작업으로, 예를 들어 130℃에서 30초 동안 60kgf의 압력으로 열 압착하여 무재봉 공정으로 신발을 제조한다. 이때, 무재봉 공정을 위한 프레스 작업 조건의 경우 핫멜트 필름의 융점 및 원단의 종류에 따라 변화될 수 있다.In this case, the hot melt film and the adherend are directly fixed by a polyurethane adhesive or an acrylic adhesive, without going through a method of fixing with a fixing plate (fixing pin) or by welding with iron to fix the adherend to the hot melt film as in the prior art. Thereafter, the adherend is moved to the press working place, and then the release paper adhered to the bottom of the hot melt film is peeled off and adhered to another adherent, and then, in a conventional press operation, for example, 60 kgf for 30 seconds at 130 ° C. The shoe is manufactured by a non-sewing process by thermal pressing at a pressure of. In this case, the press working conditions for the sewing process can be changed depending on the melting point of the hot melt film and the type of fabric.
하기에서는, 상기와 같이 구성된 본 발명의 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름을 제조하는 방법을 구체적으로 제시하고자 한다. 본 발명에서는 도트 코팅된 점착층을 가지는 핫멜트 필름을 제조할 때 폴리우레탄 점착제를 제조하는 방법과 아크릴 점착제를 제조하는 방법 및 상기 각 점착제를 핫멜트 필름 위에 도트 코팅(Dot Coating)하는 방법으로 나누어서 상세하게 설명한다.In the following, a method of manufacturing a polyurethane hot melt film having a dot-coated adhesive layer of the present invention configured as described above will be specifically presented. In the present invention, when manufacturing a hot melt film having a pressure-sensitive adhesive layer coated with a dot-coated polyurethane adhesive, a method for producing an acrylic pressure-sensitive adhesive, and each of the pressure-sensitive adhesive coating on the hot melt film (dot coating) in detail Explain.
1. 폴리우레탄 점착제를 제조하는 방법
1. How to prepare a polyurethane adhesive
본 발명에 따른 폴리우레탄 점착제의 조성물은 아래의 표 1과 같다.The composition of the polyurethane adhesive according to the present invention is shown in Table 1 below.
| 조성물Composition | 세부내역Details | 함량(중량%)Content (% by weight) |
| PolyolPolyol | 분자량 4,000 이상의 Polyester PolyolPolyester Polyol of molecular weight 4,000 or more | 18.018.0 |
| IsocyanateIsocyanate | Aliphatic IsocyanateAliphatic Isocyanate | 8.08.0 |
| 물water | 증류수Distilled water | 65.065.0 |
| SurfactantSurfactant | Ethoxylated Polypropylene OxideEthoxylated Polypropylene Oxide | 2.02.0 |
| TackifierTackifier | Rosin TypeRosin type | 7.07.0 |
상기 표 1에서 보는 바와 같이 본 발명의 폴리우레탄 점착제는 분자량 4,000 이상의 폴리에스테르 폴리올을 사용하면서 지방족 이소시아네이트와 아민을 쇄연장제(Chain Extender)로 사용하고, 여기에 계면활성제로 에톡시레이티드 폴리프로필렌 옥사이드를 사용하고 점착부여제로 로진을 사용하여 이들을 반응하여 중합한 수용성 폴리우레탄 점착제를 제조한다.As shown in Table 1, the polyurethane pressure-sensitive adhesive of the present invention uses an aliphatic isocyanate and an amine as a chain extender while using a polyester polyol having a molecular weight of 4,000 or more, and is an ethoxylated polypropylene as a surfactant. A water-soluble polyurethane pressure-sensitive adhesive was prepared by reacting these with an oxide and using rosin as a tackifier.
이때, 본 발명에서는 폴리우레탄 점착제를 제조할 때, 에톡시레이티드 폴리프로필렌 옥사이드를 2.0중량% 배합하게 되는데, 최대 3중량%를 초과하게 되면 블루밍(Blooming) 현상이 발생하고 또한 접착 불량율이 높아지는 문제점이 있었다.At this time, in the present invention, when preparing a polyurethane pressure-sensitive adhesive, 2.0 wt% of ethoxylated polypropylene oxide is blended, but when exceeding up to 3 wt%, a blooming phenomenon occurs and the adhesion failure rate is high. There was this.
또한, 본 발명에서는 폴리우레탄 점착제를 제조할 때, 점착부여제로서 로진 타입을 7.0중량%를 사용하게 되는데, 최대 15중량%를 초과하게 되면 태키(Tacky)가 너무 심하여 가공에 문제점이 있었다.In addition, in the present invention, when manufacturing a polyurethane pressure-sensitive adhesive, rosin type 7.0 wt% is used as a tackifier, if the maximum exceeds 15% by weight tacky (Tacky) was too severe there was a problem in processing.
2. 아크릴 점착제를 제조하는 방법
2. How to prepare acrylic pressure-sensitive adhesive
본 발명에서 구현하고자 하는 아크릴계 점착제는 다양한 아크릴 단량체를 공중합하여 만들어질 수 있으며, 대표적인 아크릴 단량체는 acrylic acid, hydroxyl acrylic acid, methyl acrylate, ethyl acrylate, ethyl hexyl acrylate, 2-hydroxy ethyl acrylate, methyl metacrylate 등으로 매우 다양하며, 이들을 단독 혹은 혼합하여 강한 점착력의 수지를 제조한다.Acrylic pressure-sensitive adhesive to be implemented in the present invention can be made by copolymerizing a variety of acrylic monomers, representative acrylic monomers are acrylic acid, hydroxyl acrylic acid, methyl acrylate, ethyl acrylate, ethyl hexyl acrylate, 2-hydroxy ethyl acrylate, methyl metacrylate, etc. It is very versatile, and these alone or mixed to prepare a resin of strong adhesion.
아래에서는 아크릴 점착제의 제조공정의 일 예를 설명한다.Below, an example of the manufacturing process of an acrylic adhesive is demonstrated.
(1) 계면활성제 혼합액 준비단계(1) preparation of surfactant mixture
물 533g과 비이온계 계면활성제 5g을 반응조에서 배합한 다음, 이를 80℃의 온도에서 1~2시간 동안 충분히 녹여서 계면활성제를 제조한다.533 g of water and 5 g of nonionic surfactant are combined in a reaction tank, and then dissolved at a temperature of 80 ° C. for 1 to 2 hours to prepare a surfactant.
(2) 아크를 단량체 혼합액 준비단계(2) preparing the arc monomer mixture solution
Ethyl acrylate monomer 391g, Methyl acrylate monomer 82g, N-Methyl acryl amide 39g을 반응조에서 배합한 다음, 이를 80℃의 온도에서 1~2시간 동안 충분히 녹여서 아크릴 단량체 혼합액을 제조한다.391g of Ethyl acrylate monomer, 82g of Methyl acrylate monomer, and 39g of N-Methyl acryl amide were combined in a reaction tank, and then sufficiently dissolved at a temperature of 80 ° C. for 1 to 2 hours to prepare an acrylic monomer mixture.
(3) 개시제 혼합액 준비단계(3) initiator mixed solution preparation step
산화환원개시제 0.6g과 물 72g을 배합한다.0.6 g of redox initiator and 72 g of water are combined.
(4) 반응 개시단계(4) reaction start step
전술한 (2)단계와 (3)단계에서 준비한 혼합액을 동시에 상기 (1)단계의 반응조에 85~90℃로 승온하면서 2시간 동안 적하(dropping)하여 중합시킨 다음, 이를 85℃에서 1시간 동안 숙성한 후, 이를 다시 냉각하여 반응을 종료함으로써 본 발명의 아크릴 베이스 점착제가 제조된다.Simultaneously dropping the mixed solution prepared in step (2) and step (3) to the reaction tank of step (1) while dropping for 2 hours while heating to 85-90 ° C., and then polymerizing it at 85 ° C. for 1 hour. After aging, the acrylic base pressure-sensitive adhesive of the present invention is prepared by cooling it again to terminate the reaction.
3. 폴리우레탄 점착제를 도트 코팅(Dot Coating)하는 방법
3. Dot coating of polyurethane adhesive
통상적인 방법으로 제조된 TPU 핫멜트 필름 또는 PU 필름 위에 본 발명의 폴리우레탄 점착제 또는 아크릴 베이스 점착제를 도트 코팅하는 방법은 아래와 같다.The method of dot coating the polyurethane pressure-sensitive adhesive or acrylic base pressure-sensitive adhesive of the present invention on a TPU hot melt film or PU film produced by a conventional method is as follows.
즉, 본 발명에서는 도트(Dot) 모양의 나염판 또는 날염기를 사용하여 통상적인 도트 인쇄 방식으로 핫멜트 필름에 코팅 처리한다.That is, in the present invention, the hot melt film is coated by a conventional dot printing method using a dot-shaped printing plate or a printing machine.
날염기 사용공정은 아래의 표 2와 같다.The printing process is shown in Table 2 below.
| 프린트 유닛Print unit | 1도1 degree |
| 인쇄속도Printing speed | 10~20m/min10 ~ 20m / min |
| 건조 조건Dry condition | 온도 80℃Temperature 80 ℃ |
4. 폴리우레탄 점착제를 코팅하는 방법
4. How to coat polyurethane adhesive
통상적인 방법으로 제조된 TPU 핫멜트 필름 또는 PU 필름 위에 본 발명의 폴리우레탄 점착제 또는 아크릴 점착제를 코팅하여 핫멜트 필름을 제조하는 방법은 다음과 같이, 1) 건식 코팅 후 합포하는 방법, 2) 그라비아 코팅하는 방법이 있다.The method for preparing a hot melt film by coating the polyurethane pressure sensitive adhesive or the acrylic pressure sensitive adhesive of the present invention on a TPU hot melt film or a PU film prepared by a conventional method is as follows: 1) a method of laminating after dry coating, and 2) gravure coating. There is a way.
1) 건식 코팅 후 합포하는 방법은, 먼저 본 발명의 폴리우레탄 점착제 또는 아크릴 점착제(이하 "점착제"라 함)를 이형지에 건식 코팅 후 건조시킨 다음, 상기 건조 코팅한 점착제 필름을, 바람직하게는 최대 두께 20㎛의 점착제 필름을 TPU 핫멜트 필름(또는 PU 핫멜트 필름)의 표면에 통상의 롤 합포기를 사용하여 합포한다. 이때, 합포 작업조건은 온도 100±5℃, 압력 50~60kgf, 라인 스피드(line speed) 2~4m/min 이다.1) Method of laminating after dry coating, first, after the polyurethane coating or acrylic adhesive of the present invention (hereinafter referred to as "adhesive") dry coating on a release paper and dried, and then the dry-coated adhesive film, preferably the maximum An adhesive film having a thickness of 20 μm is combined on the surface of the TPU hot melt film (or PU hot melt film) using a normal roll aeration machine. At this time, the combined working conditions are the temperature 100 ± 5 ℃, the pressure 50 ~ 60kgf, the line speed (line speed) 2 ~ 4m / min.
2) 그라비아 코팅 방법은, 본 발명의 폴리우레탄 점착제 또는 아크릴 베이스를 TPU 핫멜트 필름(또는 PU 필름) 위에 그라비아 코팅 후 건조시킨다. 이때 폴리우레탄 점착제의 두께는 최대 20㎛를 넘지 않도록 한다.2) In the gravure coating method, the polyurethane adhesive or the acrylic base of the present invention is dried after gravure coating on a TPU hot melt film (or PU film). At this time, the thickness of the polyurethane adhesive does not exceed 20㎛ maximum.
Claims (5)
- 무재봉 공정으로 신발을 제조할 때 사용되는 핫멜트 필름에 있어서,In the hot melt film used when manufacturing shoes in the sewing process,상기 핫멜트 필름의 표면에는 상기 핫멜트 필름과 피착제가 상기 무재봉 공정 전에 상기 핫멜트 필름과 피착제를 고정하기 위해 점착제를 도트 코팅 방식으로 코팅 처리하는 것을 특징으로 하는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름.Polyurethane hot melt having a dot-coated adhesive layer on the surface of the hot melt film, wherein the hot melt film and the adhesive are coated with an adhesive in a dot coating manner to fix the hot melt film and the adhesive before the non-sewing process. film.
- 무재봉 공정으로 신발을 제조할 때 사용되는 핫멜트 필름에 있어서,In the hot melt film used when manufacturing shoes in the sewing process,상기 핫멜트 필름의 표면에는 상기 핫멜트 필름과 피착제가 상기 무재봉 공정 전에 상기 핫멜트 필름과 피착제를 고정하기 위해 점착제를 건식 코팅 또는 그라비아 코팅 방식으로 코팅 처리하는 것을 특징으로 하는 점착층을 가지는 폴리우레탄 핫멜트 필름.On the surface of the hot melt film polyurethane hot melt having a pressure-sensitive adhesive layer characterized in that the hot melt film and the adhesive is coated with a pressure-sensitive adhesive dry coating or gravure coating method to fix the hot melt film and the adhesive before the non-sewing process film.
- 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,상기 점착제는 폴리우레탄 수지 또는 아크릴 수지 임을 특징으로 하는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름.The pressure-sensitive adhesive is a polyurethane hot melt film having a dot-coated adhesive layer, characterized in that the polyurethane resin or acrylic resin.
- 제3항에 있어서,The method of claim 3,상기 폴리우레탄 수지 점착제는 분자량 4,000 이상의 폴리에스테르 폴리올을 사용하고 지방족 이소시아네이트와 아민을 쇄연장제(Chain Extender)로 사용하여 중합한 수용성 폴리우레탄 점착제임을 특징으로 하는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름.The polyurethane resin adhesive is a polyurethane hot melt having a dot-coated adhesive layer, characterized in that it is a water-soluble polyurethane adhesive polymerized using a polyester polyol having a molecular weight of 4,000 or more and using an aliphatic isocyanate and an amine as a chain extender. film.
- 제3항에 있어서,The method of claim 3,상기 아크릴 수지 점착제는 acrylic acid, hydroxyl acrylic acid, methyl acrylate, ethyl acrylate, ethyl hexyl acrylate, 2-hydroxy ethyl acrylate, methyl metacrylate 중에서 선택된 어느 하나의 아크릴 단량체를 단독으로 사용하여 제조된 수용성 아크릴 수지 점착제이거나 이들을 혼합하여 제조된 수용성 아크릴 수지 점착제임을 특징으로 하는 도트 코팅된 점착층을 가지는 폴리우레탄 핫멜트 필름.The acrylic resin pressure sensitive adhesive is a water-soluble acrylic resin pressure sensitive adhesive prepared by using any one acrylic monomer selected from acrylic acid, hydroxyl acrylic acid, methyl acrylate, ethyl acrylate, ethyl hexyl acrylate, 2-hydroxy ethyl acrylate, methyl metacrylate, or Polyurethane hot melt film having a dot-coated adhesive layer characterized in that the water-soluble acrylic resin pressure-sensitive adhesive prepared by mixing.
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| KR1020160121840A KR101855590B1 (en) | 2016-09-23 | 2016-09-23 | A Gluing Agent at Polyurethane Hot Melt Film Production Method |
| KR10-2016-0121840 | 2016-09-23 |
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| CN112930439A (en) * | 2018-10-01 | 2021-06-08 | 西门子歌美飒可再生能源公司 | Adhesive sheet for mounting a protective shell to a wind turbine blade and method for mounting a protective shell to a wind turbine blade |
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| KR102515037B1 (en) * | 2021-02-09 | 2023-03-28 | 엘지전자 주식회사 | Thermal bonding film and method of manufacturing the same and joint structure of water tank for air to water heat pump using the same |
| KR102573035B1 (en) * | 2021-10-28 | 2023-08-30 | 이인영 | Thermoplastic adhesive film for textile fabric adhesive |
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| KR101855590B1 (en) | 2018-05-04 |
| KR20180032782A (en) | 2018-04-02 |
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