MANUFACTURING METHOD OF POLYURETHANE FOAM SHEET AND SYNTHETIC LEATHER MADE BY USING IT

The present invention relates to a production method of an intermediate layer which is important for the texture and the strength of a surface layer on synthetic leather or artificial leather by performing a moisture hardening reaction and a foaming reaction at the same time in the synthetic leather...

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Bibliographische Detailangaben
Hauptverfasser:	CHOI, HYUN JU, CHANG, KYUNG GUK, HAN, KY SUB, YUN, CHE KYUNG, JUNG, BYUNG HWA
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR GENERAL PROCESSES OF COMPOUNDING LAUNDERING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to a production method of an intermediate layer which is important for the texture and the strength of a surface layer on synthetic leather or artificial leather by performing a moisture hardening reaction and a foaming reaction at the same time in the synthetic leather or artificial leather. The present invention relates to a production method of a polyurethane foam sheet which does not use an organic solvent and does not need a heating process for melting by having a reaction result containing a prepolymer with a favorable viscosity at room temperature, and a synthetic leather sheet product using the same. The present invention also relates to a production method of synthetic leather or artificial leather which can obtain a foamed layer with a minimum polymer synthesis process, reduce energy costs, and reduce environment load. 본 발명은 합성 피혁 또는 인공 피혁에 있어서, 습기 경화반응과 발포반응이 동시에 진행되어 합성 피혁 또는 인공 피혁의 표면층에서 가장 감촉과 강도에 중요한 중간층의 제조방법에 관한 것이다. 본 발명은 유기용매를 전혀 사용하지 않으면서도, 프리폴리머를 포함하는 반응 생성물이 실온에서 양호한 점도를 가져, 용융을 위한 가열이 필요하지 않은 폴리우레탄 발포 시트의 제조방법 및 그것을 사용한 피혁 유사 시트형상물에 관한 것이다. 또한, 본 발명은 발포층 형성재료가 최저한의 고분자 합성공정으로 달성할 수 있는 것으로부터, 에너지 비용 경감, 환경 부하 저감도 배려한 합성 피혁 또는 인공 피혁의 제조방법에 관한 것이다.