Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Waterborne Polyurethane Skin Resin Used in the Fabrication of Synthetic Leather Adhesive

합성피혁 스킨용 폴리우레탄 수분산체의 제조 및 primerless 접착 특성 연구

  • Received : 2016.12.29
  • Accepted : 2017.02.08
  • Published : 2017.02.28
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Abstract

Shoes, made up of an upper shoe, insole, and outsole, are manufactured by adhering each of the parts together. It has been proven that pre-treating each of these parts greatly improves the adhesive strength when adhering them together. However, harmful materials such as volatile organic compounds (VOCs) are often emitted from organic solvents during pre-treatment, causing environmental concerns such as air pollution in the workplace. Therefore, this study was conducted to develop a water-based polyurethane skin resin for fabricating a synthetic leather and textile adhesive that has greater adhesive strength and does not require pre-treatment. To achieve this, two waterborne polyurethane solutions, one with excellent thermal resistance and light fastness (waterborne polyurethane A) and the other with high adhesive strength (waterborne polyurethane B), were mixed to impart the superior characteristics of each to a third waterborne polyurethane solution. Through this approach, we were able to successfully fabricate an excellent waterborne leather polyurethane resin with ethylene vinyl acetate (EVA) for midsoles (peel strength: 2.9 kgf/cm) and for rubber out-soles (peel strength: 2.4 kgf/cm) without using pre-treatment.

Keywords

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