WO2017191864A1 - 신발 제조방법 - Google Patents

신발 제조방법 Download PDF

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Publication number
WO2017191864A1
WO2017191864A1 PCT/KR2016/005432 KR2016005432W WO2017191864A1 WO 2017191864 A1 WO2017191864 A1 WO 2017191864A1 KR 2016005432 W KR2016005432 W KR 2016005432W WO 2017191864 A1 WO2017191864 A1 WO 2017191864A1
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WIPO (PCT)
Prior art keywords
midsole
treatment agent
parts
weight
acid
Prior art date
Application number
PCT/KR2016/005432
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English (en)
French (fr)
Inventor
김혁주
Original Assignee
김혁주
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Publication date
Application filed by 김혁주 filed Critical 김혁주
Priority to US15/541,016 priority Critical patent/US10638811B2/en
Publication of WO2017191864A1 publication Critical patent/WO2017191864A1/ko

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/04—Plastics, rubber or vulcanised fibre
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials
    • A43B13/125—Soles with several layers of different materials characterised by the midsole or middle layer
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B9/00—Footwear characterised by the assembling of the individual parts
    • A43B9/12—Stuck or cemented footwear
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D25/00—Devices for gluing shoe parts
    • A43D25/20—Arrangements for activating or for accelerating setting of adhesives, e.g. by using heat
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    • B29D35/00—Producing footwear
    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
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    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
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    • B32B5/30—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
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    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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Definitions

  • the present invention relates to a shoe manufacturing method, and more particularly, by applying a new method using a multi-functional treatment process and treatment agent for simplification of the existing midsole treatment process to ensure a stable adhesive force and simplify the manufacturing process
  • the present invention relates to a shoe manufacturing method that can reduce costs and improve productivity.
  • the midsole of general shoes is composed of EVA (ethylene vinyl acetate) master batch (pellet type raw material), and the high-performance special shoe sole is made of Tafmer (alpha-olefin copolymer) and OBC (Olefin Block). It is manufactured through the foaming and molding process using a mold of the raw material having the main components such as copolymers).
  • EVA ethylene vinyl acetate
  • Tafmer alpha-olefin copolymer
  • OBC Ole Block
  • the shoe midsole manufacturing process that is currently widely used is manufactured through the foaming and molding process for the above-described raw materials, and after the molding using a mold, the machine is washed, and the liquid midsole treatment agent is applied and UV After the investigation, the shoe is glued to other materials to complete the shoe.
  • the general-purpose midsole undergoes washing and drying after the molding or roughing of the surface of the material, and UV irradiation after applying and drying the liquid midsole treatment agent.
  • the adhesive is applied to the midsole thus prepared and dried, and then bonded with a rubber sole, upper and various shoe parts to manufacture a shoe.
  • the present invention has been made in view of solving the problems described above and in consideration of this, by applying a new method using a multi-functional treatment process and treatment agent for adhesion to simplify the existing midsole treatment process while ensuring a stable adhesive force and manufacturing process
  • the aim of the present invention is to provide a shoe manufacturing method that can reduce costs and improve productivity through the simplification.
  • the present invention is to provide a shoe manufacturing method to reduce the manufacturing process, such as eliminating the washing process, and to be able to manufacture shoes by performing the process in an environmentally friendly manner.
  • Shoe manufacturing method for achieving the above object, (A) comprising a raw material for the midsole, by multi-functional treatment to have a physical property friendly to the adhesion by irradiating a certain amount of UV energy; (B) molding the raw material for the multifunctional treated by the UV energy irradiation molding to form a midsole having a predetermined shape; (C) providing a multi-functional treatment agent for use for imparting a stable adhesive force to the molded midsole and to ensure surface modification and suitable applicability to the midsole material; (D) applying the adhesive multifunctional treatment agent on the molded molded midsole; (E) curing by irradiating UV to the midsole to which the multifunctional treatment agent for adhesion is applied; (F) adhering the rubber sole (outsole) and the upper and the shoe parts of the shoe to the midsole through the step (E); comprising the step; in the step (C) includes methyl ethyl ketone (MEK) phosphoric acid (Phosphor
  • a second process of mixing each of them Preparing a multi-functional treatment agent for adhesion through a third step of adding and mixing polyurethane with the mixture of the second process, and then adding and mixing the photoinitiators benzophenone and 1-hydroxycyclohexylphenylketone, respectively. Characterized in that.
  • step (C) 30-40 parts by weight of methyl ethyl ketone (MEK), 30-40 parts by weight of methyl cyclohexane (MCH), and propylene glycol monomethyl ether acetic acid (100 parts by weight of ethyl acetate (EA)) PGMEA) 5-10 weight part, phosphoric acid 0.2-0.4 weight part, malic acid 0.2-0.4 weight part, chlorine copolymer 0.4-0.5 weight part, polyvinyl chloride 0.4-0.5 weight part, 2-hydroxyethyl methacrylic acid ( 2-HEMA) 0.5 to 0.8 parts by weight, methacrylic acid compound 0.5 to 0.8 parts by weight, butanediol dimethacrylic acid (BDDMA) 0.8 to 1.0 parts by weight, polyurethane (PU) 2-3 parts by weight, benzophenone 0.05 to 0.10 It is characterized by producing a multi-functional treatment agent for adhesion in a composition to add by weight and mix 0.05 to 0.
  • step (A) is irradiated with UV energy of 2.0 ⁇ 0.2 J / cm2 to the midsole raw material is multifunctional treatment;
  • step (E) is characterized in that to irradiate UV energy of 1.5 ⁇ 2.0J / cm2 to the midsole coated multi-functional treatment agent for adhesion.
  • step (F) after applying the two-component rubber treatment agent to the adhesive surface on the rubber sole (outsole) and heat-drying, and after the rubber treatment agent is applied and dried again to the rubber sole (outsole) Drying treatment for 2 to 3 minutes at 55 ⁇ 65 °C temperature conditions, it characterized in that the adhesive with the midsole (midsole) coated with a multifunctional treatment agent for adhesion.
  • the step (D) is characterized in that it comprises a process of drying for 2 to 4 minutes at a temperature condition of 50 ⁇ 10 °C after applying the adhesive multifunctional treatment agent to the midsole.
  • the present invention unlike the conventional shoe manufacturing method, it is possible to omit the additional treatment agent process for washing and midsole, while reducing the process compared to the conventional, can improve the adhesive strength, achieve a useful effect of improving productivity can do.
  • the present invention can secure a stable adhesive force while simplifying the existing midsole treatment process by applying a new method using a multi-functional treatment process and a treatment agent for adhesion.
  • the present invention can promote the reduction of the number of people and equipment in accordance with the reduction of the process and the cost reduction effect can be carried out eco-friendly manufacturing process according to the omission of the washing process.
  • FIG. 1 is a schematic process diagram shown to explain a shoe manufacturing method according to an embodiment of the present invention.
  • step (F) bonding the rubber outsole and the upper and the shoe parts of the shoe to the midsole through step (E) to complete the shoe; Including;
  • Methyl ethyl ketone is mixed with phosphoric acid (Phosphoric acid) and maleic acid (DL-malic acid), but until the acid (acid) component is completely dissolved after ethyl acetate (EA), methyl cyclohexane (MCH) And a first step of mixing and stirring propylene glycol monomethyl ether acetic acid (PGMEA);
  • Chlorinated polymer and polyvinyl chloride were added to the mixture of the first step, followed by mixing, followed by 2-hydroxyethyl methacrylic acid (2-HEMA), methacrylic acid compound, and butanediol dimethacrylic acid (BDDMA). A second process of mixing each of them;
  • Footwear manufacturing method as shown in Figure 1, multi-function processing step (S1) and molding step (S2), multi-functional treatment agent manufacturing step (S3) for adhesion, multi-functional treatment agent coating step (S4) for adhesion , UV irradiation step (S5), made of a composition comprising a bonding step (S6).
  • the multifunctional processing step (S1) is a pretreatment step performed before molding the raw material for the midsole, and is a step for multifunctional processing by irradiating energy to the midsole raw material.
  • the raw material for the midsole is passed through the equipment for emitting energy of 2.0J / cm2 or more, it can be multi-functional treatment, such as transforming to a physical property useful for adhesion through a certain amount of energy irradiation.
  • the midsole raw material may be referred to as a general purpose midsole raw material or a high-functional midsole raw material
  • the general purpose midsole raw material may be an EVA (ethylene vinyl acetate) master batch (pellet-type raw material), for example, a high functional midsole raw material
  • EVA ethylene vinyl acetate
  • Pellet-type raw material for example, a high functional midsole raw material
  • examples include Tafmer (alpha-olefin copolymer) or OBC (Olefin Block Copolymers), and various materials may be used without being limited thereto.
  • the energy is preferably applied to 2.0 ⁇ 0.2 J / cm2 as it can be performed by UV irradiation, and may also use energy such as laser, ultrasonic or infrared.
  • the midsole raw material is mainly used as the olefin-based polymer as described above
  • the olefin-based polymer is a polymer having a structurally strong hard structure, structurally strong by irradiating a certain amount of energy such as UV as described above It can act to break the hard properties and can be treated with softened tissue through this can lead to a stable adhesiveness, in particular can provide the advantage of modifying the tissue to have an adhesive-friendly structure.
  • the forming step (S2) is a step for molding into a midsole having a predetermined shape by molding the raw material for the multifunctional treated by the energy irradiation using a mold.
  • the adhesive multifunctional treatment agent manufacturing step (S3) is a step for producing a multifunctional treatment agent for adhesion in order to give a stable adhesion to the molded midsole, and to secure the surface modification and suitable coating properties for the midsole material.
  • the adhesive multifunctional treatment agent methyl ethyl ketone (MEK; Methyl Ethyl Ketone), ethyl acetate (EA; Ethyl Acetate), methyl cyclohexane (MCH; Methyl Cyclo Hexane), propylene glycol monomethyl ether acetic acid (PGMEA; Propylene Glycol Mnomethyl Ether Acetate) is mixed.
  • the chlorinated polymer may use pergut S 20, which is a commercially available Bayer Materialie Science company.
  • 2-hydroxyethyl methacrylic acid (2-HEMA; 2-Hydroxyethyl Methacrylate), methacrylic acid compound and butanediol dimethacrylic acid (BDDMA; Butanediol Dimethacrylate) are added, respectively.
  • 2-HEMA 2-hydroxyethyl methacrylic acid
  • BDDMA butanediol dimethacrylic acid
  • the methacrylic acid compound is preferably a compound in which n-lauryl methacrylate and tridecyl methacrylic acid are mixed, and Light Ester L-7 manufactured by KYOEISHA CHEMICAL Co., Ltd. Can be used.
  • polyurethane PU; Polyurethane
  • a photoinitiator benzophenone benzophenone
  • 1-hydroxycyclohexyl phenyl ketone 1-Hydroxycyclohexyl Phenyl Ketone
  • the 1-hydroxycyclohexylphenyl ketone may use Igacure 184D, which is commercially available from Ciba.
  • the multifunctional treatment agent for adhesion is methyl ethyl ketone (MEK) 30-40 parts by weight, methyl cyclohexane (MCH) 30-40 parts by weight, propylene glycol monomethyl ether acetic acid based on 100 parts by weight of ethyl acetate (EA) (PGMEA) 5-10 weight part, phosphoric acid 0.2-0.4 weight part, maleic acid 0.2-0.4 weight part, chlorine copolymer 0.4-0.5 weight part, polyvinyl chloride 0.4-0.5 weight part, 2-hydroxyethyl methacrylic acid (2-HEMA) 0.5-0.8 parts by weight, methacrylic acid compound 0.5-0.8 parts by weight, butanediol dimethacrylic acid (BDDMA) 0.8-1.0 parts by weight, polyurethane (PU) 2-3 parts by weight, benzophenone 0.05- It is preferable to comprise 0.10 weight part and the composition which mixed 0.05-0.10 weight part of 1-hydroxycyclohexyl
  • Methyl ethyl ketone is mixed with phosphoric acid (Phosphoric acid) and maleic acid (DL-malic acid), but until the acid (acid) component is completely dissolved after ethyl acetate (EA), methyl cyclohexane (MCH) And propylene glycol monomethyl ether acetic acid (PGMEA) by mixing and stirring to prepare a mixture.
  • EA ethyl acetate
  • MCH methyl cyclohexane
  • PGMEA propylene glycol monomethyl ether acetic acid
  • Chlorinated polymer and polyvinyl chloride were added to the mixture, followed by mixing, followed by 2-hydroxyethyl methacrylic acid (2-HEMA), methacrylic acid compound, and butanediol dimethacrylic acid (BDDMA). To mix.
  • 2-HEMA 2-hydroxyethyl methacrylic acid
  • BDDMA butanediol dimethacrylic acid
  • the adhesive multifunctional treatment step (S4) is a step of applying a multifunctional treatment agent prepared in the above-described composition to the molded midsole.
  • the UV irradiation step (S5) is a step of curing by irradiating UV to the midsole to which the multifunctional treatment agent for adhesion is applied.
  • the UV is preferably irradiated with energy of 1.5 ⁇ 2.0J / cm2.
  • the bonding step (S6) is a step of bonding the rubber sole (outsole) and upper and shoe parts of the shoe to the midsole completed until the UV irradiation to complete the shoe.
  • a two-component rubber treatment agent eg, AQUACE PR-505, Henkel Co.
  • AQUACE PR-505, Henkel Co. a two-component rubber treatment agent
  • the two-part rubber treatment agent is a mixture of a powdered solute in a solvent, preferably used after the solute is completely dissolved, and preferably heat-dried after the rubber treatment agent is applied.
  • an adhesive for example, AQUQCE W-01, Henkel Co., Ltd.
  • AQUQCE W-01 Henkel Co., Ltd.
  • the shoe is manufactured by attaching the midsole to the applied midsole and then adhering it using a press.
  • the multifunctional treatment step (S1), the molding step (S2), and the adhesive multifunctional treatment agent manufacturing step (S3) may be performed by changing the processing order.
  • the midsole was filled with an appropriate amount of the raw material for the midsole, and the midsole was completed through the foaming and molding process, and three different cleaning solvents were prepared for the formed midsole. After the washing process was carried out by heat drying.
  • a UV treatment agent eg, AQUACE PR-607, Henkel Co., Ltd.
  • AQUACE PR-607 Henkel Co., Ltd.
  • the midsole is coated with an adhesive (for example, AQUQCE W-01, Henkel Co., Ltd.), and temporarily adhered to an outsole after being dried for 5 minutes at a temperature of 45 to 55 ° C. Shoe was manufactured by bonding.
  • an adhesive for example, AQUQCE W-01, Henkel Co., Ltd.
  • the present invention and the comparative example was measured 24 hours after adhering the midsole and the rubber sole, and then performing the peeling (Peeling TEST) using a tensioner (INSTRON 4443) to measure the adhesion, a total of two tests was carried out, and the results are shown in Table 1 below.
  • the specimen bonded with the adhesive multifunctional treatment process and the treatment agent according to the present invention shows an excellent adhesive strength than the specimen (comparative example) having a conventional manufacturing method.
  • the present invention is to simplify the existing midsole treatment process by applying a new method using a multi-functional processing process for the adhesive and a treatment agent to ensure a stable adhesive force, to simplify the manufacturing process as well as to reduce costs and improve productivity It can be applied to the field of manufacturing shoes that can be made.

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Abstract

본 발명은 (A) 중창용 원자재를 구비하되, 일정량의 UV 에너지를 조사함으로써 접착에 친화적인 물성을 갖도록 다기능 처리하는 단계; (B) 상기 UV 에너지 조사에 의해 다기능 처리된 중창용 원자재를 몰딩 성형하여 일정 형태를 갖는 중창으로 성형하는 단계; (C) 상기 성형된 중창에 안정된 접착력을 부여함과 더불어 중창 재질에 대한 표면 개질 및 적합한 도포성을 확보하는데 사용하기 위한 접착용 다기능 처리제를 제조하는 단계; (D) 상기 몰딩 성형된 중창에 상기 접착용 다기능 처리제를 도포하는 단계; (E) 상기 접착용 다기능 처리제가 도포된 중창에 UV를 조사함으로써 경화 처리하는 단계; (F) 상기 (E)단계를 거친 중창에 신발의 고무창(outsole)과 갑피 및 신발 부품을 접착하여 신발을 완성하는 단계;로 구성된 신발 제조방법에 관한 것이다.

Description

신발 제조방법
본 발명은 신발 제조방법에 관한 것으로서, 더욱 상세하게는 접착용 다기능 처리공정 및 처리제를 이용하는 새로운 방식을 적용함으로써 기존의 중창 처리공정을 간소화하면서도 안정된 접착력을 확보할 수 있도록 하고 제조공정을 단순화함은 물론 비용을 절감할 수 있도록 하며 생산성을 향상시킬 수 있도록 한 신발 제조방법에 관한 것이다.
일반적인 신발의 중창(midsole)은 EVA(에틸렌비닐아세테이트) 마스터배치(master batch; 펠릿형 원료)를 주요 구성성분으로 하고, 고기능성의 특수한 신발 중창은 Tafmer(alpha-olefin copolymer), OBC(Olefin Block Copolymers) 등을 주요 구성성분으로 하는 원자재의 몰드(mold)를 이용한 발포 및 성형공정을 통하여 제조된다.
이와 같이, 현재 많이 적용되고 있는 신발용 중창 제조공정은 상기한 원자재에 대해 발포 및 성형공정을 통하여 제조하고 있으며, 몰드(mold)를 이용한 성형 이후 기계 세척을 실시하고 액상의 중창 처리제를 도포 및 UV 조사를 한 다음에 다른 재질들과 접착하여 신발을 완성하게 된다.
보다 상세하게 설명하면, 일반용 중창은 성형 이후에 세척과 건조 또는 재질 표면의 러핑(roughing) 처리를 실시하고, 액상의 중창 처리제를 도포 및 건조 이후에 UV 조사를 실시하는 공정을 거친다.
또한, 접착이 어려운 고기능성 중창에 대해서는 몰딩(molding) 성형 이후에 재질 표면의 러핑(roughing) 처리와 톨루엔 수작업 세척 및 건조를 실시하고, MEK(메틸에틸케톤) 등에 디핑(dipping) 처리 및 건조를 실시하며, 용제형 UV 처리제에 디핑(dipping) 및 건조 처리한 후에 UV 조사를 실시하고 다시 용제형 PU 처리제를 처리 및 건조 공정을 거친다.
이어, 이렇게 준비된 중창에 접착제를 도포 및 건조한 후 고무창과 갑피 및 각종 신발 부품들과 접착하여 신발을 제조한다.
즉, 상술한 바와 같이, 종래에는 성형공정을 통해 완성된 중창에 다른 재질들과의 안정된 접착력 확보를 위하여 추가적인 공정을 다수 실시하게 되는데, 일반용 중창의 경우에는 6단계 이상의 처리 공정이 필요하고, 고기능성 중창 재질에 대해서는 10단계 이상의 처리 공정이 필요한 실정에 있다.
이로 인해, 종래 신발을 제조함에 있어서는 많은 공정 처리에 의해 제조시간이 많이 소요되고 제조비용을 절감하는데 어려움이 있었으며, 생산성이 떨어지는 문제점이 있었다.
본 발명은 상술한 바와 같은 문제점을 해소 및 이를 감안하여 안출된 것으로서, 접착용 다기능 처리공정 및 처리제를 이용하는 새로운 방식을 적용함으로써 기존의 중창 처리공정을 간소화하면서도 안정된 접착력을 확보할 수 있도록 하고 제조공정의 단순화를 통해 비용을 절감할 수 있도록 하며 생산성을 향상시킬 수 있도록 한 신발 제조방법을 제공하는데 그 목적이 있다.
본 발명은 세척공정을 생략하는 등 제조공정을 절감할 수 있도록 하며, 친환경적으로 공정을 수행하여 신발을 제조할 수 있도록 한 신발 제조방법을 제공하는데 그 목적이 있다.
상기의 목적을 달성하기 위한 본 발명에 따른 신발 제조방법은, (A) 중창용 원자재를 구비하되, 일정량의 UV 에너지를 조사함으로써 접착에 친화적인 물성을 갖도록 다기능 처리하는 단계; (B) 상기 UV 에너지 조사에 의해 다기능 처리된 중창용 원자재를 몰딩 성형하여 일정 형태를 갖는 중창으로 성형하는 단계; (C) 상기 성형된 중창에 안정된 접착력을 부여함과 더불어 중창 재질에 대한 표면 개질 및 적합한 도포성을 확보하는데 사용하기 위한 접착용 다기능 처리제를 제조하는 단계; (D) 상기 몰딩 성형된 중창에 상기 접착용 다기능 처리제를 도포하는 단계; (E) 상기 접착용 다기능 처리제가 도포된 중창에 UV를 조사함으로써 경화 처리하는 단계; (F) 상기 (E)단계를 거친 중창에 신발의 고무창(outsole)과 갑피 및 신발 부품을 접착하여 신발을 완성하는 단계;를 포함하며, 상기 (C)단계에서는 메틸에틸케톤(MEK)에 인산(Phosphoric acid) 및 말릭산(DL-malic acid)을 혼합하되, 산(acid) 성분이 완전히 녹을 때까지 혼합한 후 에틸아세테이트(EA), 메틸사이클로헥산(MCH) 및 프로필렌글리콜모노메틸에테르아세트산(PGMEA)를 혼합 교반하여 혼합물을 제조하는 제1 과정; 상기 제1 과정의 혼합물에 염소화합중합체, 폴리비닐염화물을 각각 투입하여 혼합한 다음에 다시 2-히드록시에틸 메타크릴산(2-HEMA), 메타크릴산화합물, 부탄디올 디메타크릴산(BDDMA)를 각각 투입하여 혼합하는 제2 과정; 상기 제2 과정의 혼합물에 폴리우레탄을 투입하여 혼합한 후, 광개시제인 벤조페논(benzophenone) 및 1-하이드록시사이클로헥실페닐케톤을 각각 투입하고 혼합하는 제3 과정;을 통해 접착용 다기능 처리제를 제조하는 것을 특징으로 한다.
여기에서, 상기 (C)단계에서는 에틸아세테이트(EA) 100중량부에 대해서 메틸에틸케톤(MEK) 30~40중량부, 메틸사이클로헥산(MCH) 30~40중량부, 프로필렌글리콜모노메틸에테르아세트산(PGMEA) 5~10중량부, 인산 0.2~0.4중량부, 말릭산 0.2~0.4중량부, 염소화합중합체 0.4~0.5중량부, 폴리비닐염화물 0.4~0.5중량부, 2-히드록시에틸 메타크릴산(2-HEMA) 0.5~0.8중량부, 메타크릴산화합물 0.5~0.8중량부, 부탄디올 디메타크릴산(BDDMA) 0.8~1.0중량부, 폴리우레탄(PU) 2~3중량부, 벤조페논 0.05~0.10중량부, 1-하이드록시사이클로헥실페닐케톤 0.05~0.10중량부를 첨가하여 혼합하는 조성으로 접착용 다기능 처리제를 제조하는 것을 특징으로 한다.
여기에서, 상기 (A)단계에서는 중창용 원자재에 2.0±0.2J/㎠의 UV 에너지를 조사하여 다기능 처리하며; 상기 (E)단계에서는 접착용 다기능 처리제가 도포된 중창에 1.5~2.0J/㎠의 UV 에너지를 조사하는 것을 특징으로 한다.
여기에서, 상기 (F)단계에서는 고무창(outsole)에 2액형 고무처리제를 접착면에 도포한 후 열건조를 실시하고, 상기 고무처리제가 도포 및 건조된 고무창(outsole)에 다시 접착제를 도포한 후 55~65℃ 온도조건에서 2~3분간 건조 처리하며, 접착용 다기능 처리제가 도포된 중창(midsole)과 접착하는 것을 특징으로 한다.
여기에서, 상기 (D)단계에서는 접착용 다기능 처리제를 중창에 도포한 후, 50±10℃의 온도 조건에서 2~4분간 건조 처리하는 과정을 포함하는 것을 특징으로 한다.
본 발명에 따르면, 기존의 신발 제조방법과는 달리 세척 및 중창에 대한 추가처리제 공정의 생략이 가능하게 되고, 기존에 비해 공정을 절감하면서도 접착력은 향상시킬 수 있으며, 생산성을 향상시키는 유용한 효과를 달성할 수 있다.
본 발명은 접착용 다기능 처리공정 및 처리제를 이용하는 새로운 방식을 적용함으로써 기존의 중창 처리공정을 간소화하면서도 안정된 접착력을 확보할 수 있다.
본 발명은 공정의 절감에 따른 인원 및 제반 설비감소를 추진할 수 있고 비용 절감효과가 있을 뿐만 아니라 세척공정 등의 생략에 따라 친환경적으로 제조공정을 수행할 수 있다.
도 1은 본 발명의 실시예에 따른 신발 제조방법을 설명하기 위해 나타낸 개략적 공정도이다.
본 발명은,
(A) 중창용 원자재를 구비하되, 일정량의 UV 에너지를 조사함으로써 접착에 친화적인 물성을 갖도록 다기능 처리하는 단계;
(B) 상기 UV 에너지 조사에 의해 다기능 처리된 중창용 원자재를 몰딩 성형하여 일정 형태를 갖는 중창으로 성형하는 단계;
(C) 상기 성형된 중창에 안정된 접착력을 부여함과 더불어 중창 재질에 대한 표면 개질 및 적합한 도포성을 확보하는데 사용하기 위한 접착용 다기능 처리제를 제조하는 단계;
(D) 상기 몰딩 성형된 중창에 상기 접착용 다기능 처리제를 도포하는 단계;
(E) 상기 접착용 다기능 처리제가 도포된 중창에 UV를 조사함으로써 경화 처리하는 단계;
(F) 상기 (E)단계를 거친 중창에 신발의 고무창(outsole)과 갑피 및 신발 부품을 접착하여 신발을 완성하는 단계; 를 포함하며,
상기 (C)단계에서는,
메틸에틸케톤(MEK)에 인산(Phosphoric acid) 및 말릭산(DL-malic acid)을 혼합하되, 산(acid) 성분이 완전히 녹을 때까지 혼합한 후 에틸아세테이트(EA), 메틸사이클로헥산(MCH) 및 프로필렌글리콜모노메틸에테르아세트산(PGMEA)를 혼합 교반하여 혼합물을 제조하는 제1 과정;
상기 제1 과정의 혼합물에 염소화합중합체, 폴리비닐염화물을 각각 투입하여 혼합한 다음에 다시 2-히드록시에틸 메타크릴산(2-HEMA), 메타크릴산화합물, 부탄디올 디메타크릴산(BDDMA)를 각각 투입하여 혼합하는 제2 과정;
상기 제2 과정의 혼합물에 폴리우레탄을 투입하여 혼합한 후, 광개시제인 벤조페논(benzophenone) 및 1-하이드록시사이클로헥실페닐케톤을 각각 투입하고 혼합하는 제3 과정; 을 통해 접착용 다기능 처리제를 제조하는 신발 제조방법을 제공하고자 하는 것이다.
본 발명에 대해 첨부한 도면을 참조하여 바람직한 실시예를 설명하면 다음과 같으며, 이와 같은 상세한 설명을 통해서 본 발명의 목적과 구성 및 그에 따른 특징들을 보다 잘 이해할 수 있게 될 것이다.
본 발명의 실시예에 따른 신발 제조방법은 도 1에 나타낸 바와 같이, 다기능 처리단계(S1)와 성형단계(S2), 접착용 다기능 처리제 제조단계(S3), 접착용 다기능 처리제 도포단계(S4), UV 조사단계(S5), 접착단계(S6)를 포함하는 구성으로 이루어진다.
상기 다기능 처리단계(S1)는 중창용 원자재를 몰딩 성형하기 이전에 실시하는 전처리 단계로서, 중창용 원자재에 에너지를 조사하여 다기능 처리하기 위한 단계이다.
이를 위해, 중창용 원자재를 2.0J/㎠ 이상의 에너지를 발산하는 장비를 통과시키며, 이러한 일정량의 에너지 조사를 통해 접착에 유용한 물성으로 변형시키는 등 다기능 처리할 수 있다.
이때, 중창용 원자재는 일반용 중창 원자재나 고기능성 중창 원자재라 할 수 있는데, 일반용 중창 원자재는 EVA(에틸렌비닐아세테이트) 마스터배치(master batch; 펠릿형 원료) 등을 예로 들 수 있고, 고기능성 중창 원자재는 Tafmer(alpha-olefin copolymer)나 OBC(Olefin Block Copolymers) 등을 예로 들 수 있으며, 이들에 한정됨 없이 다양한 재질이 사용될 수 있다 할 것이다.
여기에서, 상기 에너지는 2.0±0.2J/㎠로 부여함이 바람직하다 할 수 있는 것으로서 UV 조사를 수행하며, 때로는 레이저나 초음파 또는 적외선 등의 에너지를 활용할 수도 있다 할 것이다.
여기에서, 상기 중창용 원자재는 상술한 바와 같이 올레핀계 폴리머를 주로 사용하는데, 올레핀계 폴리머는 구조적으로 강한 경성의 조직을 갖는 폴리머로서, 상기와 같이 UV 등 일정량의 에너지를 조사함에 따라 구조적으로 강한 경성의 물성을 깨뜨리는 작용을 하고 이를 통해 연화된 조직으로 처리할 수 있어 안정된 접착성을 갖게 유도할 수 있으며, 특히 접착제와 친화적인 구조를 갖도록 조직을 변형시킬 수 있는 장점을 제공할 수 있다.
여기에서, 에너지 조사량이 너무 낮으면 중창용 원자재에 대해 접착제와 친화적인 구조로 조직을 변형하는데 어려움이 있고, 에너지 조사량이 과다하면 중창용 원자재가 타거나 수축 변형이 발생된다.
상기 성형단계(S2)는 에너지 조사에 의해 다기능 처리된 중창용 원자재를 몰드를 이용하여 몰딩 성형함으로써 일정 형태를 갖는 중창으로 성형하기 위한 단계이다.
상기 접착용 다기능 처리제 제조단계(S3)는 성형된 중창에 안정된 접착력을 부여함과 더불어 중창 재질에 대한 표면 개질 및 적합한 도포성을 확보하기 위하여 접착용 다기능 처리제를 제조하기 위한 단계이다.
이때, 상기 접착용 다기능 처리제는 메틸에틸케톤(MEK; Methyl Ethyl Ketone), 에틸아세테이트(EA; Ethyl Acetate), 메틸사이클로헥산(MCH; Methyl Cyclo Hexane), 프로필렌글리콜모노메틸에테르아세트산(PGMEA; Propylene Glycol Mnomethyl Ether Acetate)이 혼합된다.
이에, 인산(phosphoric acid) 및 말릭산(DL-malic acid)이 각각 동일하게 첨가되며, 염소화합중합체, 폴리비닐염화물이 각각 동일하게 첨가된다.
여기에서, 상기 염소화합중합체는 시중에 유통되는 바이엘 머티리엘사이언스사 제품인 pergut S 20을 사용할 수 있다.
이에, 2-히드록시에틸 메타크릴산(2-HEMA; 2-Hydroxyethyl Methacrylate), 메타크릴산화합물, 부탄디올 디메타크릴산(BDDMA; Butanediol Dimethacrylate)이 각각 첨가된다.
여기에서, 상기 메타크릴산화합물은 n-라우릴 메타크릴산(n-lauryl methacrylate)과 트리데실 메타크릴산이 혼합된 화합물을 사용함이 바람직하며, 시중에 유통되는 KYOEISHA CHEMICAL사 제품인 Light Ester L-7를 사용할 수 있다.
또한, 폴리우레탄(PU; Poly Urethane), 광개시제인 벤조페논(benzophenone) 및 1-하이드록시사이클로헥실페닐케톤(1-Hydroxycyclohexyl Phenyl Ketone)이 각각 첨가된다.
여기에서, 상기 1-하이드록시사이클로헥실페닐케톤은 시중에 유통되는 시바사 제품인 Igacure 184D를 사용할 수 있다.
보다 상세하게, 상기 접착용 다기능 처리제는 에틸아세테이트(EA) 100중량부에 대해서 메틸에틸케톤(MEK) 30~40중량부, 메틸사이클로헥산(MCH) 30~40중량부, 프로필렌글리콜모노메틸에테르아세트산(PGMEA) 5~10중량부, 인산 0.2~0.4중량부, 말릭산 0.2~0.4중량부, 염소화합중합체 0.4~0.5중량부, 폴리비닐염화물 0.4~0.5중량부, 2-히드록시에틸 메타크릴산(2-HEMA) 0.5~0.8중량부, 메타크릴산화합물 0.5~0.8중량부, 부탄디올 디메타크릴산(BDDMA) 0.8~1.0중량부, 폴리우레탄(PU) 2~3중량부, 벤조페논 0.05~0.10중량부, 1-하이드록시사이클로헥실페닐케톤 0.05~0.10중량부를 혼합한 조성으로 구성함이 바람직하다.
더불어, 상기 접착용 다기능 처리제의 혼합 제법을 설명하면 다음과 같다.
메틸에틸케톤(MEK)에 인산(Phosphoric acid) 및 말릭산(DL-malic acid)을 혼합하되, 산(acid) 성분이 완전히 녹을 때까지 혼합한 후 에틸아세테이트(EA), 메틸사이클로헥산(MCH) 및 프로필렌글리콜모노메틸에테르아세트산(PGMEA)를 혼합 교반하여 혼합물을 제조한다.
이러한 상기 혼합물에 염소화합중합체, 폴리비닐염화물을 각각 투입하여 혼합한 다음에 다시 2-히드록시에틸 메타크릴산(2-HEMA), 메타크릴산화합물, 부탄디올 디메타크릴산(BDDMA)를 각각 투입하여 혼합한다.
그리고, 폴리우레탄을 투입하여 혼합한 후, 마지막으로 광개시제인 벤조페논(benzophenone) 및 1-하이드록시사이클로헥실페닐케톤을 각각 투입하고 완전히 용해될 때까지 혼합하여 완성한다.
상기 접착용 다기능 처리제 도포단계(S4)는 성형된 중창에 상술한 조성으로 제조된 다기능 처리제를 도포하는 단계이다.
이때, 접착용 다기능 처리제를 중창에 도포한 후에는 50±10℃의 온도 조건에서 2~4분간 건조 처리함이 바람직하다.
상기 UV 조사단계(S5)는 접착용 다기능 처리제가 도포된 중창에 UV를 조사함으로써 경화시키는 단계이다.
이때, UV는 1.5~2.0J/㎠ 의 에너지로 조사함이 바람직하다.
상기 접착단계(S6)는 UV 조사까지 완료한 중창에 신발의 고무창(outsole)과 갑피 및 신발 부품을 접착하여 신발을 완성하는 단계이다.
이때, 고무창(outsole)에는 2액형 고무처리제(예: AQUACE PR-505, Henkel사)를 접착면에 도포한다.
여기에서, 상기 2액형 고무처리제는 용매에 파우더상의 용질을 혼합한 것을 사용하며, 용질이 완전 용해된 후 사용함이 바람직하며, 고무처리제를 도포한 후에는 열건조를 실시함이 바람직하다.
또한, 고무처리제가 도포 및 건조된 고무창(outsole)에는 다시 접착제(예: AQUQCE W-01, Henkel사)를 도포하고, 55~65℃ 온도조건에서 2~3분간 건조 처리하며, 이를 다기능 처리제가 도포된 중창(midsole)과 가접착(Attaching)한 후 압착기를 이용하여 접착함으로써 신발을 제조한다.
여기에서, 상술한 제조공정 중 상기 다기능 처리단계(S1)와 성형단계(S2) 및 접착용 다기능 처리제 제조단계(S3)는 그 처리 순서를 바꾸는 등 치환하여 실시할 수도 있다 할 것이다.
한편, 본 발명에 따른 접착용 다기능 처리공정 및 처리제를 사용하는 제조방법과 비교하기 위하여 기존의 신발 제조방법으로 아래와 같은 비교 예를 실시하였다.
(비교 예)
중창용 원자재를 몰드(mold) 내부에 적정한 양을 채운 다음에 발포 및 성형공정을 통하여 중창(midsole)을 완성하였고, 성형된 중창(midsole)에 대해 3가지의 각기 다른 세척용제가 준비된 세척기를 통과시켜 세척공정을 수행한 후 열건조를 수행하였다.
이어, 열건조를 통해 완전히 건조된 중창(midsole)의 접착면에 UV처리제(예: AQUACE PR-607, Henkel사)를 도포한 후 UV를 조사하여 열건조를 수행하였다.
또한, 중창(midsole)에는 접착제(예: AQUQCE W-01, Henkel사)를 도포하고, 45~55℃의 온도조건에서 5분간 건조 처리한 상태에 고무창(outsole)과 가접착한 후 압착기를 이용하여 접착함으로써 신발을 제조하였다.
이어서, 아래와 같은 실험 예를 실시하였다.
(실험 예)
본 발명에 따른 제조방법에 의해 얻어진 시편이 갖는 중창(midsole)과 고무창(outsole)간의 접착력을 테스트하였으며, 비교 예에서 얻어진 시편이 갖는 중창과 고무창간의 접착력을 테스트하였다.
이때, 본 발명과 비교 예는 중창과 고무창을 접착한 후 24시간 경과한 다음에, 인장기(INSTRON 4443)를 이용한 박리(Peeling TEST)를 실시하여 접착성을 측정하였고, 총 2회에 걸친 테스트를 실시하였으며, 그에 따른 결과를 아래의 표 1에 나타내었다.
Figure PCTKR2016005432-appb-I000001
여기에서, 상기 표 1을 통해 확인할 수 있는 바와 같이, 본 발명에 따른 접착용 다기능 처리공정 및 처리제로 접착한 시편이 기존의 제조방식을 갖는 시편(비교 예)보다 우수한 접착력을 나타내고 있다.
이상에서와 같이, 본 발명에 대해 구체적인 실시예를 들어 설명하였으나, 본 발명은 이 명세서에 개시된 실시예 및 첨부된 도면에 의하여 특별히 한정되지 않는다 할 것이며, 본 발명의 기술적 사상을 벗어나지 않는 범위 이내에서 당업자에 의하여 다양하게 변형 및 수정 또는 치환될 수 있음은 자명하다 할 것이다.
본 발명은 접착용 다기능 처리공정 및 처리제를 이용하는 새로운 방식을 적용함으로써 기존의 중창 처리공정을 간소화하면서도 안정된 접착력을 확보할 수 있도록 하고 제조공정을 단순화함은 물론 비용을 절감할 수 있도록 하며 생산성을 향상시킬 수 있는 신발 제조방법 분야에 적용할 수 있다.

Claims (5)

  1. (A) 중창용 원자재를 구비하되, 일정량의 UV 에너지를 조사함으로써 접착에 친화적인 물성을 갖도록 다기능 처리하는 단계;
    (B) 상기 UV 에너지 조사에 의해 다기능 처리된 중창용 원자재를 몰딩 성형하여 일정 형태를 갖는 중창으로 성형하는 단계;
    (C) 상기 성형된 중창에 안정된 접착력을 부여함과 더불어 중창 재질에 대한 표면 개질 및 적합한 도포성을 확보하는데 사용하기 위한 접착용 다기능 처리제를 제조하는 단계;
    (D) 상기 몰딩 성형된 중창에 상기 접착용 다기능 처리제를 도포하는 단계;
    (E) 상기 접착용 다기능 처리제가 도포된 중창에 UV를 조사함으로써 경화 처리하는 단계;
    (F) 상기 (E)단계를 거친 중창에 신발의 고무창(outsole)과 갑피 및 신발 부품을 접착하여 신발을 완성하는 단계; 를 포함하며,
    상기 (C)단계에서는,
    메틸에틸케톤(MEK)에 인산(Phosphoric acid) 및 말릭산(DL-malic acid)을 혼합하되, 산(acid) 성분이 완전히 녹을 때까지 혼합한 후 에틸아세테이트(EA), 메틸사이클로헥산(MCH) 및 프로필렌글리콜모노메틸에테르아세트산(PGMEA)를 혼합 교반하여 혼합물을 제조하는 제1 과정;
    상기 제1 과정의 혼합물에 염소화합중합체, 폴리비닐염화물을 각각 투입하여 혼합한 다음에 다시 2-히드록시에틸 메타크릴산(2-HEMA), 메타크릴산화합물, 부탄디올 디메타크릴산(BDDMA)를 각각 투입하여 혼합하는 제2 과정;
    상기 제2 과정의 혼합물에 폴리우레탄을 투입하여 혼합한 후, 광개시제인 벤조페논(benzophenone) 및 1-하이드록시사이클로헥실페닐케톤을 각각 투입하고 혼합하는 제3 과정; 을 통해 접착용 다기능 처리제를 제조하는 것을 특징으로 하는 신발 제조방법.
  2. 제 1항에 있어서,
    상기 (C)단계에서는,
    에틸아세테이트(EA) 100중량부에 대해서 메틸에틸케톤(MEK) 30~40중량부, 메틸사이클로헥산(MCH) 30~40중량부, 프로필렌글리콜모노메틸에테르아세트산(PGMEA) 5~10중량부, 인산 0.2~0.4중량부, 말릭산 0.2~0.4중량부, 염소화합중합체 0.4~0.5중량부, 폴리비닐염화물 0.4~0.5중량부, 2-히드록시에틸 메타크릴산(2-HEMA) 0.5~0.8중량부, 메타크릴산화합물 0.5~0.8중량부, 부탄디올 디메타크릴산(BDDMA) 0.8~1.0중량부, 폴리우레탄(PU) 2~3중량부, 벤조페논 0.05~0.10중량부, 1-하이드록시사이클로헥실페닐케톤 0.05~0.10중량부를 첨가하여 혼합하는 조성으로 접착용 다기능 처리제를 제조하는 것을 특징으로 하는 신발 제조방법.
  3. 제 1항에 있어서,
    상기 (A)단계에서는,
    중창용 원자재에 2.0±0.2J/㎠의 UV 에너지를 조사하여 다기능 처리하며;
    상기 (E)단계에서는,
    접착용 다기능 처리제가 도포된 중창에 1.5~2.0J/㎠의 UV 에너지를 조사하는 것을 특징으로 하는 신발 제조방법.
  4. 제 1항에 있어서,
    상기 (F)단계에서는,
    고무창(outsole)에 2액형 고무처리제를 접착면에 도포한 후 열건조를 실시하고,
    상기 고무처리제가 도포 및 건조된 고무창(outsole)에 다시 접착제를 도포한 후 55~65℃ 온도조건에서 2~3분간 건조 처리하며,
    접착용 다기능 처리제가 도포된 중창(midsole)과 접착하는 것을 특징으로 하는 신발 제조방법.
  5. 제 1항에 있어서,
    상기 (D)단계에서는,
    접착용 다기능 처리제를 중창에 도포한 후, 50±10℃의 온도 조건에서 2~4분간 건조 처리하는 과정을 포함하는 것을 특징으로 하는 신발 제조방법.
PCT/KR2016/005432 2016-05-04 2016-05-23 신발 제조방법 WO2017191864A1 (ko)

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