WO2017222102A1 - Polyurethane hot-melt film having adhesive function and method for manufacturing same - Google Patents
Polyurethane hot-melt film having adhesive function and method for manufacturing same Download PDFInfo
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- WO2017222102A1 WO2017222102A1 PCT/KR2016/007154 KR2016007154W WO2017222102A1 WO 2017222102 A1 WO2017222102 A1 WO 2017222102A1 KR 2016007154 W KR2016007154 W KR 2016007154W WO 2017222102 A1 WO2017222102 A1 WO 2017222102A1
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- melt film
- hot melt
- adhesive
- polyurethane
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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
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/362—Applications of adhesives in processes or use of adhesives in the form of films or foils for the fabrication of shoes
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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
- C09J2475/00—Presence of polyurethane
Definitions
- the present invention relates to a polyurethane hot melt film, and more particularly, a coating treatment of a polyurethane resin having a tacky adhesive on the hot melt film to adhere the adhesive and the hot melt film to move to a no-sew press workshop or without sewing
- the present invention relates to a polyurethane hot melt film having an adhesive function for performing a press operation without disturbing during the process, and a manufacturing method thereof.
- 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 a polyurethane resin having a tacky adhesive on the hot melt film to adhere the adhesive and hot melt film at the time of cutting to prevent the distraction when moving the polyurethane It is an object to provide a hot melt film and a method of manufacturing the same.
- the present invention provides a method for producing a hot melt film used when manufacturing shoes in a non-sewing process;
- the hot melt film is coated with a resin having an adhesive to form an adhesive layer, wherein the adhesive uses a polyester polyol having a molecular weight of 4,000 or more and an aliphatic isocyanate and an amine as a chain extender and is used as a surfactant.
- the polyurethane adhesive is coated on the hot melt film to prepare a hot melt film.
- the present invention by coating the adhesive polyurethane resin on the TPU hot-melt film or UP hot-melt film by inserting and cutting the hot melt film between the adhesive for the unsealed process, it is not disturbed when moving to the place for press work
- the adherend since the adherend is fixed during cutting, labor costs and simplification of the process can reduce the cost of the product, and in particular, the shoe manufacturing industry has an advantage of implementing an automated process.
- FIG. 1 is a view showing a cross-sectional view of the polyurethane hot melt film having an adhesive function according to an embodiment of the present invention.
- the present invention is a hot melt film used when manufacturing shoes in a sewing process, TPU hot melt film or PU hot melt film having a pressure-sensitive adhesive feature, characterized in that the pressure-sensitive adhesive layer is formed by coating the adhesive polyurethane resin It is intended to implement a polyurethane hot melt film.
- 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 to the same position and moved without distractions, so that it can be carried out without sewing. To this end, the adhesive and hot melt film are adhered to the hot melt film by coating the adhesive to the cutting work. Or to achieve a polyurethane hot melt film and a method of manufacturing the adhesive function to prevent the adhesive and the hot melt film is not disturbed even when moving to the position without the sewing process and the press device.
- Hot melt film according to the invention is based on a hot melt film made of a thermoplastic polyurethane or polyurethane resin as shown in Figure 1, the bottom of the hot melt film is a conventional paper or PP, PE release paper is attached, the hot melt The upper surface of the film is coated with a polyurethane adhesive corresponding to an essential component of the present invention, and a conventional paper or PP, PE release agent is attached thereto.
- the polyurethane pressure-sensitive adhesive according to the present invention is a resin having an adhesive function, and preferably a polyurethane resin coated on a hot melt film, which is deposited during a press work or a movement to a press work for a no-sew process. It serves to prevent the agent and the hot melt film from being disturbed.
- the thickness of the polyurethane adhesive is preferably not to exceed the maximum 20 ⁇ m (Max 0.02mm), the reason is that when the thickness of the adhesive exceeds 20 ⁇ m press work for the final No-Sew process This is because the adhesive strength of the hot melt film is lowered by the pressure-sensitive adhesive component even when thermally pressing at a pressure of at least 2.5 kgf / cm 2. Therefore, in this invention, the thickness of the polyurethane adhesive was 20 micrometers in maximum, and the thickness of the hot melt film was 0.05-0.30 mm.
- the present invention is prepared with a hot melt film and the adhesive (for example, fabric or synthetic leather, etc.) configured as described above, then peel off the release paper attached to the pressure-sensitive adhesive layer of the hot melt film and cut the overlap with the adhesive at the same time.
- the hot melt film and the adherend are directly fixed by the polyurethane pressure-sensitive 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 then moved to the press working site, followed by peeling off the release paper on the bottom of the hot melt film and adhering to another adherent, followed by a conventional press operation, for example, 60 kgf for 30 seconds at 130 ° C.
- the shoe is manufactured by a non-sewing process by thermocompression bonding under pressure.
- 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.
- the method of manufacturing a hot melt film by coating the polyurethane 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, 2) a gravure coating method. .
- the polyurethane adhesive 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.
Abstract
The purpose of the present invention is to insert a hot-melt film between the adherends and cut the same when manufacturing shoes by a no-sew process, and then move the adherends without scatter by fixing the adherend and the hot-melt film in the same position, when the adherends are moved to a place where a press device for thermocompression is installed, and thus be subjected to the no-sew process. To this end, a hot-melt film is coated with an adhesive resin to adhere the adherend and the hot-melt film, and therefore the present invention provides a polyurethane hot-melt film having an adhesive function which prevents the adherend and the hot-melt film from scattering during a cutting process, a no-sew process and when being moved to a position where a press device is located, and a method for manufacturing the same.
Description
본 발명은 폴리우레탄 핫멜트 필름에 관한 것으로서, 더욱 상세하게는 핫멜트 필름 위에 점착성을 가지는 폴리우레탄 수지를 코팅 처리하여 피착제와 핫멜트 필름을 점착시켜 무재봉(No-Sew) 프레스 작업장까지 이동시 또는 무재봉 공정시에 흐트러짐 없이 프레스 작업을 수행할 수 있도록 하는 점착 기능을 가지는 폴리우레탄 핫멜트 필름 및 그 제조방법에 관한 것이다.The present invention relates to a polyurethane hot melt film, and more particularly, a coating treatment of a polyurethane resin having a tacky adhesive on the hot melt film to adhere the adhesive and the hot melt film to move to a no-sew press workshop or without sewing The present invention relates to a polyurethane hot melt film having an adhesive function for performing a press operation without disturbing during the process, and a manufacturing method thereof.
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 수지를 코팅하여 피착제와 핫멜트 필름을 재단시 바로 점착시킴으로써 이동시에 흐트러짐이 없도록 하는 점착 기능을 가지는 폴리우레탄 핫멜트 필름 및 그 제조방법을 제공하는데 그 목적이 있다.The present invention is to solve the problems of the prior art as described above, by coating a polyurethane resin having a tacky adhesive on the hot melt film to adhere the adhesive and hot melt film at the time of cutting to prevent the distraction when moving the polyurethane It is an object to provide a hot melt film and a method of manufacturing the same.
본 발명은 무재봉 공정으로 신발을 제조할 때 사용되는 핫멜트 필름을 제조하는 방법에 있어서; 상기 핫멜트 필름에는 점착성을 가지는 수지를 코팅하여 점착제 층을 형성하되, 상기 점착제는 분자량 4,000 이상의 폴리에스테르 폴리올을 사용하고 지방족 이소시아네이트와 아민을 쇄연장제(Chain Extender)로 사용하고 여기에 계면활성제로 에톡시레이티드 폴리프로필렌 옥사이드를 사용하고 점착부여제로 로진을 사용하여 이들을 반응하여 중합한 수용성 폴리우레탄 점착제를 제조하며; 상기 폴리우레탄 점착제를 상기 핫멜트 필름 위에 코팅 처리하여 핫멜트 필름을 제조하는 것을 특징으로 한다.The present invention provides a method for producing a hot melt film used when manufacturing shoes in a non-sewing process; The hot melt film is coated with a resin having an adhesive to form an adhesive layer, wherein the adhesive uses a polyester polyol having a molecular weight of 4,000 or more and an aliphatic isocyanate and an amine as a chain extender and is used as a surfactant. Preparing a water-soluble polyurethane pressure-sensitive adhesive obtained by using oxylated polypropylene oxide and reacting these by using rosin as a tackifier; The polyurethane adhesive is coated on the hot melt film to prepare a hot melt film.
본 발명은 TPU 핫멜트 필름 또는 UP 핫멜트 필름 위에 점착성을 가지는 폴리우레탄 수지를 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, 특히 신발제조산업에서 자동화 공정을 구현할 수 있는 장점이 있다.The present invention by coating the adhesive polyurethane resin on the TPU hot-melt film or UP hot-melt film by inserting and cutting the hot melt film between the adhesive for the unsealed process, it is not disturbed when moving to the place for press work In addition, since the adherend is fixed during cutting, labor costs and simplification of the process can reduce the cost of the product, and in particular, the shoe manufacturing industry has an advantage of implementing an automated process.
도 1은 본 발명의 바람직한 일 실시 예에 따른 점착 기능을 가지는 폴리우레탄 핫멜트 필름의 단면을 도면을 보여주고 있는 도면.1 is a view showing a cross-sectional view of the polyurethane hot melt film having an adhesive function according to an embodiment of the present invention.
본 발명은 무재봉 공정으로 신발을 제조할 때 사용되는 핫멜트 필름에 있어서, TPU 핫멜트 필름 또는 PU 핫멜트 필름에는 점착성을 가지는 폴리우레탄 수지를 코팅 처리하여 점착제 층을 형성하는 것을 특징으로 하는 점착 기능을 가지는 폴리우레탄 핫멜트 필름을 구현하고자 한다.The present invention is a hot melt film used when manufacturing shoes in a sewing process, TPU hot melt film or PU hot melt film having a pressure-sensitive adhesive feature, characterized in that the pressure-sensitive adhesive layer is formed by coating the adhesive polyurethane resin It is intended to implement a polyurethane hot melt film.
이하 본 발명의 바람직한 실시 예를 구체적으로 설명하면 다음과 같다. 후술될 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 위치게 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 점착 기능을 가지는 폴리우레탄 핫멜트 필름 및 그 제조방법을 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 to the same position and moved without distractions, so that it can be carried out without sewing. To this end, the adhesive and hot melt film are adhered to the hot melt film by coating the adhesive to the cutting work. Or to achieve a polyurethane hot melt film and a method of manufacturing the adhesive function to prevent the adhesive and the hot melt film is not disturbed even when moving to the position without the sewing process and the press device.
아래에서는 본 발명의 바람직한 실시 예를 도 1을 참조하여 상세히 설명하고자 한다.Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIG. 1.
도 1은 본 발명에 따른 점착 기능을 가지는 폴리우레탄 핫멜트 필름의 단면을 보여주고 있는 도면이다. 본 발명에 따른 핫멜트 필름은 도 1에서 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 점착제가 코팅 처리되고, 그 위에는 통상적인 종이 또는 PP, PE 이형제가 부착된다.1 is a view showing a cross-section of the polyurethane hot melt film having an adhesive function according to the present invention. Hot melt film according to the invention is based on a hot melt film made of a thermoplastic polyurethane or polyurethane resin as shown in Figure 1, the bottom of the hot melt film is a conventional paper or PP, PE release paper is attached, the hot melt The upper surface of the film is coated with a polyurethane adhesive corresponding to an essential component of the present invention, and a conventional paper or PP, PE release agent is attached thereto.
본 발명에 따른 폴리우레탄 점착제는 점착 기능을 가지는 수지로서, 바람직하게는 폴리우레탄 수지를 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 according to the present invention is a resin having an adhesive function, and preferably a polyurethane resin coated on a hot melt film, which is deposited during a press work or a movement to a press work for a no-sew process. It serves to prevent the agent and the hot melt film from being disturbed.
이때, 상기 폴리우레탄 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 점착제의 두께를 최대 20㎛로 하고 핫멜트 필름의 두께를 0.05~0.30mm로 하였다.At this time, the thickness of the polyurethane adhesive is preferably not to exceed the maximum 20㎛ (Max 0.02mm), the reason is that when the thickness of the adhesive exceeds 20㎛ press work for the final No-Sew process This is because the adhesive strength of the hot melt film is lowered by the pressure-sensitive adhesive component even when thermally pressing at a pressure of at least 2.5 kgf / cm 2. Therefore, in this invention, the thickness of the polyurethane adhesive was 20 micrometers in maximum, and the thickness of the 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 층에 붙어있는 이형지를 벗겨내고 피착제와 겹쳐서 함께 동시에 재단한다. 이렇게 하면 종래와 같이 핫멜트 필름에 피착제를 고정하기 위해 고정판(고정핀)으로 고정하거나 인두작업으로 가접하는 방법을 거치지 않고도 핫멜트 필름과 피착제는 폴리우레탄 점착제에 의해 곧바로 고정된다. 이후, 상기 피착제를 프레스 작업 장소까지 이동시킨 다음, 핫멜트 필름의 저면에 있는 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.On the other hand, the present invention is prepared with a hot melt film and the adhesive (for example, fabric or synthetic leather, etc.) configured as described above, then peel off the release paper attached to the pressure-sensitive adhesive layer of the hot melt film and cut the overlap with the adhesive at the same time. In this case, the hot melt film and the adherend are directly fixed by the polyurethane pressure-sensitive 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 then moved to the press working site, followed by peeling off the release paper on the bottom of the hot melt film and adhering to another adherent, followed by a conventional press operation, for example, 60 kgf for 30 seconds at 130 ° C. The shoe is manufactured by a non-sewing process by thermocompression bonding under pressure. 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 점착 기능을 가지는 핫멜트 필름을 제조하는 방법을 구체적으로 제시하고자 한다. 본 발명에서는 점착 기능을 가지는 핫멜트 필름을 제조할 때 폴리우레탄 점착제를 제조하는 방법과 이 점착제를 핫멜트 필름 위에 코팅하는 방법으로 나누어서 상세하게 설명한다.In the following, it is intended to present in detail a method for producing a hot melt film having an adhesive function of the present invention configured as described above. In the present invention, when producing a hot melt film having a pressure-sensitive adhesive function will be described in detail divided into a method for producing a polyurethane pressure-sensitive adhesive and a method for coating the pressure-sensitive adhesive on a hot melt film.
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. 폴리우레탄 점착제 코팅방법
2. Polyurethane adhesive coating method
통상적인 방법으로 제조된 TPU 핫멜트 필름 또는 PU 필름 위에 본 발명의 폴리우레탄 점착제를 코팅하여 핫멜트 필름을 제조하는 방법은 다음과 같이, 1) 건식 코팅 후 합포하는 방법, 2) 그라비아 코팅하는 방법이 있다.The method of manufacturing a hot melt film by coating the polyurethane 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, 2) a gravure coating method. .
1) 건식 코팅 후 합포하는 방법은, 먼저 본 발명의 폴리우레탄 점착제를 이형지에 건식 코팅 후 건조시킨 다음, 상기 건조 코팅한 폴리우레탄 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) The method of laminating after the dry coating, first the polyurethane pressure-sensitive adhesive of the present invention on a release paper and then dried, and then dried the coated polyurethane pressure-sensitive adhesive film, preferably a pressure-sensitive adhesive film having a maximum thickness of 20㎛ TPU hot melt It mixes on the surface of a film (or PU hot melt film) using a normal roll cloth 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 점착제를 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 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 (4)
- 무재봉 공정으로 신발을 제조할 때 사용되는 핫멜트 필름에 있어서,In the hot melt film used when manufacturing shoes in the sewing process,TPU 핫멜트 필름 또는 PU 핫멜트 필름에는 점착성을 가지는 폴리우레탄 수지를 코팅 처리하여 점착제 층을 형성하는 것을 특징으로 하는 점착 기능을 가지는 폴리우레탄 핫멜트 필름.A polyurethane hot melt film having an adhesive function, wherein the TPU hot melt film or the PU hot melt film is coated with a polyurethane resin having adhesiveness to form an adhesive layer.
- 무재봉 공정으로 신발을 제조할 때 사용되는 핫멜트 필름을 제조하는 방법에 있어서,In the method of manufacturing a hot melt film used when manufacturing shoes in a non-sewing process,상기 핫멜트 필름에는 점착성을 가지는 수지를 코팅하여 점착제 층을 형성하되, 상기 점착제는 분자량 4,000 이상의 폴리에스테르 폴리올을 사용하고 지방족 이소시아네이트와 아민을 쇄연장제(Chain Extender)로 사용하여 중합한 수용성 폴리우레탄 점착제를 제조한 것이며;The hot melt film is coated with a resin having an adhesive to form an adhesive layer, wherein the adhesive is a water-soluble polyurethane adhesive polymerized using a polyester polyol having a molecular weight of 4,000 or more and aliphatic isocyanate and amine as a chain extender. Was prepared;상기 폴리우레탄 점착제를 상기 핫멜트 필름 위에 코팅 처리하여 핫멜트 필름을 제조하는 것을 특징으로 하는 점착 기능을 가지는 폴리우레탄 핫멜트 필름의 제조방법.The polyurethane pressure-sensitive adhesive is coated on the hot melt film to produce a hot melt film, characterized in that the manufacturing method of the polyurethane hot melt film having an adhesive function.
- 제2항에 있어서,The method of claim 2,상기 폴리우레탄 점착제를 제조할 때, 점착부여제로 로진을 사용하는 것을 특징으로 하는 점착 기능을 가지는 폴리우레탄 핫멜트 필름의 제조방법.When manufacturing the polyurethane pressure-sensitive adhesive, a method for producing a polyurethane hot melt film having a pressure-sensitive adhesive, characterized in that using a rosin as a tackifier.
- 제2항 또는 제3항에 있어서, The method according to claim 2 or 3,상기 폴리우레탄 점착제를 제조할 때, 계면활성제로 에톡시레이티드 폴리프로필렌 옥사이드를 사용하는 것을 특징으로 하는 점착 기능을 가지는 폴리우레탄 핫멜트 필름의 제조방법.When preparing the polyurethane pressure-sensitive adhesive, a method for producing a polyurethane hot melt film having an adhesive function, characterized in that the ethoxylated polypropylene oxide is used as a surfactant.
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| KR102131606B1 (en) | 2020-02-19 | 2020-07-08 | 박희대 | Dot-laminated shoe insole used adhesive resin mixed with hydrophobic nano silica and manufacturing process thereof |
| KR102440469B1 (en) | 2021-11-29 | 2022-09-06 | 삼부정밀화학 주식회사 | Hot-melt film comprising biomass-base thermoplastic polyurethane resin |
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| JP2000218224A (en) * | 1999-01-27 | 2000-08-08 | Nisshinbo Ind Inc | Laminated sheet and its production |
| KR100842218B1 (en) * | 2007-12-11 | 2008-06-30 | 주원테크 주식회사 | Thermoplastic polyurethane resin for adhesives and protection layer and laminating film manufactured by using them and its manufacturing method |
| KR20090071690A (en) * | 2007-12-28 | 2009-07-02 | 김효현 | Cutting sheet for hot fix with adhesive layer |
| JP3185524U (en) * | 2013-05-24 | 2013-08-22 | 王子ホールディングス株式会社 | Laminated film |
| KR101596664B1 (en) * | 2015-11-18 | 2016-03-07 | 정찬수 | Protective film |
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| DE4242687B8 (en) * | 1992-12-17 | 2006-01-12 | Henkel Kgaa | Hydrophilic polyurethanes |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000218224A (en) * | 1999-01-27 | 2000-08-08 | Nisshinbo Ind Inc | Laminated sheet and its production |
| KR100842218B1 (en) * | 2007-12-11 | 2008-06-30 | 주원테크 주식회사 | Thermoplastic polyurethane resin for adhesives and protection layer and laminating film manufactured by using them and its manufacturing method |
| KR20090071690A (en) * | 2007-12-28 | 2009-07-02 | 김효현 | Cutting sheet for hot fix with adhesive layer |
| JP3185524U (en) * | 2013-05-24 | 2013-08-22 | 王子ホールディングス株式会社 | Laminated film |
| KR101596664B1 (en) * | 2015-11-18 | 2016-03-07 | 정찬수 | Protective film |
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