WO2006001554A1 - Procede d'adhesion d'elements de chaussure par transfert d'adhesif thermofusible reactif - Google Patents

Procede d'adhesion d'elements de chaussure par transfert d'adhesif thermofusible reactif Download PDF

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Publication number
WO2006001554A1
WO2006001554A1 PCT/KR2004/001637 KR2004001637W WO2006001554A1 WO 2006001554 A1 WO2006001554 A1 WO 2006001554A1 KR 2004001637 W KR2004001637 W KR 2004001637W WO 2006001554 A1 WO2006001554 A1 WO 2006001554A1
Authority
WO
WIPO (PCT)
Prior art keywords
bonding
shoe
shoe parts
hotmelt adhesive
adhesive
Prior art date
Application number
PCT/KR2004/001637
Other languages
English (en)
Inventor
Sung Tai Park
Jong Kook Kim
Hyo Seon Kim
Original Assignee
Dongsung Nsc Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongsung Nsc Co., Ltd. filed Critical Dongsung Nsc Co., Ltd.
Publication of WO2006001554A1 publication Critical patent/WO2006001554A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D25/00—Devices for gluing shoe parts
    • A43D25/18—Devices for applying adhesives to shoe parts
    • 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
    • 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
    • A43D25/18—Devices for applying adhesives to shoe parts
    • A43D25/181—Devices for applying adhesives to shoe parts by rollers

Definitions

  • This invention relates to gluing of shoe parts by transferring reactive hotmelt adhesive. More specifically, this invention relates to gluing of shoe parts by transferring reactive hotmelt adhesive comprising applying reactive hotmelt adhesive on a transfer sheet that is made from thermosetting rubber or covered with thermosetting rubber, using a coater, transferring a transfer sheet that has been coated with adhesive and the adhering surface of a shoe item (bonding item), trimming of a bonding item to the shape of other shoe materials to be glued together, and heat activation of the bonding item at 50 -70 ° C for 1 - 5 minutes and gluing it to other shoe parts.
  • This invention involves these four steps that can be applied to various types of shoes manufacturing processes and the method of adhesion of shoe parts by means of transfer of reactive hotmelt adhesive.
  • This invention is not only superior but also has been modified to allow easy adhesion of even the bonding items with uneven or curved surfaces.
  • shoes should be resistant to natural elements such as rain, snow, wind, ultraviolet radiation, temperature changes and should be able to endure physical stresses due to curvature, engraving, impact, and friction. Therefore, shoes are made from various materials to maintain the characteristics needed for their intended purposes. Many natural and synthetic materials such as ordinary leather, porous material, rubber, PVC, TPR, EVA, PU, and others exist for manufacturing of shoes, and various adhesives have been used for gluing these shoe parts. Adhesives used in shoe manufacturing can be broadly classified into aqueous adhesives, hotmelt adhesives, and solvent based adhesives. Hotmelt adhesive is solid at high temperature and non-solvent based. It is used after it is liquefied using heat.
  • Hotmelt adhesive characteristically does not contain any solvent because, unlike traditional adhesives that employ solid adhesive ingredients dissolved or dispersed in solvent, hotmelt adhesive is used after liquefying 100% solid ingredients using heat. Hotmelt adhesive has the advantages that it bonds fast, has broad bonding range, and is economical and useful, but it has poor heat-resistance and cold- resistance properties because it is based on heat-melted polymer.
  • the reactive hotmelt adhesive remedies these poor properties by having adhesive properties of both the ordinary type hotmelts and the reactive type adhesives.
  • the reactive hotmelt adhesives are widely used because they have the instantaneous adhesive property of solidification by cooling of hotmelt types and the heat-resistant adhesive property of reactive types and thus the relevant researches are being actively conducted [Korean Patent No. 10-0425786, US Patent No. 3,505,283].
  • Turbine spray, brush coating, roll coating, and other traditional methods have been used, where the swirl method is most commonly used.
  • the swirl spray method involves manual spraying of reactive hotmelt adhesive thus making it difficult to have uniform coating on shoe parts.
  • the roll coating method can be applied to general shoe manufacturing processes. It is a fast process allowing increased production, but it has a limitation that it can be applied only to even surface shoe parts with very little irregularities due to the special characteristic of the machine that is used. Like the roll coating method, the use of brush coating method is also limited to even surface shoe parts, and it takes at least twice the time needed for the roll coating method thus not being cost-effective.
  • the present invention employs thermosetting rubber to make a transfer sheet, coat reactive hotmelt adhesive onto the transfer sheet, then transfer the adhesive to bonding items based on the dimorphism of reactive hotmelt adhesive.
  • This overcomes the limitations of traditional methods and allows easy adhesion of shoe parts to curved or uneven surfaces, and it further increases the efficiency of production. Therefore, the object of this invention is to provide a method of gluing shoe parts which comprises coating reactive hotmelt adhesive onto a transfer sheet made from or coated with thermosetting rubber, and transferring reactive hotmelt adhesive to bonding items by compressing adhesive-coated surface of the transfer sheet and bonding surface of shoe parts (bonding items).
  • This invention relates to a method of gluing shoe parts which comprises: 1) applying reactive hotmelt adhesive on a transfer sheet that is made from thermosetting rubber or covered with thermosetting rubber; 2)transferring reactive hotmelt adhesive to the bonding items by compressing the adhering surface of the transfer sheet that has been applied with adhesive and the adhering surface of shoe parts (bonding items); 3)trimming bonding items to the shape of other shoe parts; 4)heat activation of bonding items at 50 - 70 "C for 1 - 5 minutes, and 5)bonding it to other shoe parts.
  • the present invention can be described in more detail as set forth hereunder.
  • both discoloring and non-discoloring adhesives can be used as the reactive hotmelt adhesive above the optimal operational temperature for roll coating of 130 ° C .
  • the amount of adhesive coated on the transfer sheet should be 5 - 50 mg/cm' for an optimal result according to this invention.
  • the optimal transfer sheet is preferably 1 - 5T mm thick. If its thickness is less than IT, it is not easy to coat it using a coater, and the sheet can get dragged into the roll. If it is thicker than 5T, poor adhesion will incur in the transferring process of curved bonding items.
  • a transfer sheet can be made directly from thermosetting rubber or thermosetting rubber can be coated onto a 0.08 - 2T mm dimorphic sheet.
  • Thermosetting rubber is used for its dimorphism towards reactive hotmelt adhesive, but silicon rubber is preferable for this purpose. All coating machine types used in shoe manufacturing processes can be used and are not limited to any particular type, but the roll coater is preferred for the present invention for obtaining best results.
  • the bonding items in step 2 include shoe parts with even bonding surface as well as shoe parts with curved or uneven bonding surfaces such as outsole, midsole, upper, etc.
  • Shoe parts should be subject to proper pretreatment according to their composition so that they can be glued together with other shoe parts. These pretreatment processes are self-evident to those in the art to which this invention pertains. For compression, it is preferable to have a condition of 1 - 40 atmospheric pressure and a room temperature condition.
  • a transfer sheet When a transfer sheet is separated after compression, reactive hotmelt adhesive gets transferred because of its dimorphic property.
  • a compression unit any compression unit ordinarily used in a shoe manufacturing process can be used, and a worker may lightly press it for temporary-adhesion before using a compression unit.
  • the transfer sheet can be reused after it is separated from a bonding item. After performing the steps 1 and 2, bonding items are trimmed to the shapes of shoe parts that the bonding items are to be bonded to, heat activated at 50 - 70 "C for 1 - 5 minutes, and then bonded to other shoe parts.
  • Example A 2T thick silicone sheet manufactured by Ilkwangkijun Inc. (Korea) was used as a transfer sheet.
  • the polyurethane series MELTACE R-2060 manufactured by Dongsung NSC Inc. (Korea) was used as reactive hotmelt adhesive.
  • the transfer sheet was coated with 30 mg/citf of the reactive hotmelt adhesive using a roll coater HARDO.
  • Ten atmospheric pressure was applied to a curved and uneven bonding surface of a bonding item, and then the reactive hotmelt adhesive was transferred to it by removing the transfer sheet.
  • a bonding item with the reactive hotmelt adhesive transferred to it was trimmed to the shape of a different bonding item (midsole) then heat activated for 3 minutes in a heat chamber preheated at 60 ° C .
  • These two bonding items were then subject to attaching (temporary -adhesion process whereby a worker manual attaches bonding items) process, and then bonded together using a deep-well press.
  • reactive hotmelt adhesive can be evenly coated on adhering surfaces of shoe parts by including the essential steps of coating reactive hotmelt adhesive onto a transfer sheet using manufactured thermosetting rubber and transferring the reactive hotmelt adhesive onto bonding surface of shoe parts (bonding items) by compression. These steps allow uniform coating of reactive hotmelt adhesive not only on even surface shoe parts but also on uneven or curved shoe parts. These steps also result in outstanding adhesive strength and superior productivity with lowered percentage of inferior products.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un procédé de collage de parties de chaussures via le transfert d'un adhésif thermofusible réactif. Plus spécifiquement, cette invention concerne le procédé de collage de parties de chaussures via le transfert d'adhésif thermofusible réactif qui consiste à appliquer un adhésif thermofusible réactif sur une feuille de transfert qui est fabriquée en caoutchouc thermodurcissable ou recouvert d'un caoutchouc thermodurcissable au moyen d'une machine à enduire, à transférer une feuille de transfert qui a été revêtue d'adhésif sur la surface d'adhésion de l'élément de chaussure (élément de liaison), à ajuster un élément de liaison à la forme des autres éléments de chaussures à coller ensemble et, à thermoactiver l'élément de liaison à une température comprise entre 50 et 70 °C pendant une à cinq minutes et à le coller aux autres éléments de chaussure. Le procédé de cette invention peut être appliqué à divers types de processus de fabrication chaussures ainsi que le procédé d'adhésion d'éléments de chaussures par transfert d'adhésif thermofusible réactif. Cette invention supérieure au procédé existant jusqu'à présent et a également été modifié de façon à permettre une adhésion plus facile d'éléments de liaison à surface régulière avec des surfaces inégales et/ou recourbées.
PCT/KR2004/001637 2004-06-24 2004-07-02 Procede d'adhesion d'elements de chaussure par transfert d'adhesif thermofusible reactif WO2006001554A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20040047854A KR100588066B1 (ko) 2004-06-24 2004-06-24 반응성 핫멜트 접착제의 전사를 이용한 신발 재료의접착방법
KR10-2004-0047854 2004-06-24

Publications (1)

Publication Number Publication Date
WO2006001554A1 true WO2006001554A1 (fr) 2006-01-05

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PCT/KR2004/001637 WO2006001554A1 (fr) 2004-06-24 2004-07-02 Procede d'adhesion d'elements de chaussure par transfert d'adhesif thermofusible reactif

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KR (1) KR100588066B1 (fr)
TW (1) TWI288301B (fr)
WO (1) WO2006001554A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100818308B1 (ko) * 2006-04-20 2008-03-31 안병학 전사인쇄물과 피착재의 접착력강화방법 및 그 접착구조
KR101533346B1 (ko) * 2015-04-07 2015-07-03 황인수 신발 및 그의 제조방법
WO2021125371A1 (fr) * 2019-12-16 2021-06-24 이지파우더 주식회사 Procédé de fabrication de houppette cosmétique et houppette cosmétique ainsi fabriquée

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505283A (en) * 1967-05-15 1970-04-07 Merck & Co Inc Isocyanates as thickening agents for epoxy resins
JPS6239299A (ja) * 1985-08-15 1987-02-20 凸版印刷株式会社 転写方法
KR20010039533A (ko) * 1999-10-08 2001-05-15 이마이 다케시 장식용 첩착시트와 그 제조방법 및 장식용 첩착시트의첩착 대상물에의 접착방법
JP2003266018A (ja) * 2002-03-15 2003-09-24 Mitsui Takeda Chemicals Inc 水性接着剤の塗布方法と造膜抑制方法、これを用いた靴の製造方法およびその靴、並びに接着剤セット
KR100425786B1 (ko) * 2001-11-01 2004-04-03 주식회사 동성엔에스씨 습기경화형 반응성 핫멜트 폴리우레탄 접착제

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505283A (en) * 1967-05-15 1970-04-07 Merck & Co Inc Isocyanates as thickening agents for epoxy resins
JPS6239299A (ja) * 1985-08-15 1987-02-20 凸版印刷株式会社 転写方法
KR20010039533A (ko) * 1999-10-08 2001-05-15 이마이 다케시 장식용 첩착시트와 그 제조방법 및 장식용 첩착시트의첩착 대상물에의 접착방법
KR100425786B1 (ko) * 2001-11-01 2004-04-03 주식회사 동성엔에스씨 습기경화형 반응성 핫멜트 폴리우레탄 접착제
JP2003266018A (ja) * 2002-03-15 2003-09-24 Mitsui Takeda Chemicals Inc 水性接着剤の塗布方法と造膜抑制方法、これを用いた靴の製造方法およびその靴、並びに接着剤セット

Also Published As

Publication number Publication date
TWI288301B (en) 2007-10-11
KR100588066B1 (ko) 2006-06-09
KR20050123300A (ko) 2005-12-29
TW200600561A (en) 2006-01-01

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