Dyeing is the processing in which the fiber or other polymer materials are endowed withcolor. The dyes combine with the dyed materials,or the dyes are generated on the dyeing materialby chemical methods,which can make the dyed materials become colored. Th...[继续阅读]

    2.4.1 Polyurethane adhesives2.4.1.1 Properties of polyurethane adhesivesPolyurethane adhesives adhere well to many substrates. This is not solely due to physicalbonding forces arising from the close contact between the adhesive film and the substrate surf...[继续阅读]

    4.1.1 The definition and classification of baseThe name is derived from English BASE,which means the substrate,base fabric and semifinished products. The synthetic leather base usually refers to fiber-resin composite which isformed by the impregnating or ...[继续阅读]

    5.3.1 The characteristics and requirements of release paperRelease paper also is called transfer printing paper,and it is indispensable carrier materialin transfer coating process which can endue synthetic leather beautiful pattern. The coating agentfirst...[继续阅读]

    The synthetic leather industry in China develop rapidly,especially in recent years,with theapplication of new materials and new post-processing technology,the varieties of products getgreat development,and the leather with special effect has been used con...[继续阅读]

    5.1.1 Purpose and methodsIn the dry process,fabrics are changed to leather which has similar structure and texture withthe grain of leather by artificial means. The dry processing technology can be divided into twotypes: direct knife coating and indirect ...[继续阅读]

    5.5.1 The structure of filmThe purpose of dry process is to improve the value and durability of synthetic leather. Theapplication and using condition of different synthetic leather is different,so the requirements totop coating are not the same. The gener...[继续阅读]

    In dipping process,the impregnating solution is completely and uniformly distributedbetween the spaces of base by pressing and squeeze. The addition of PU makes the base formintegral structure from a macroscopical view,and the product has similar handle w...[继续阅读]

    The purpose of finishing is to improve the character of service of nonwoven fabrics. Generallytwo finishing ways are carried out before using nonwovens used for synthetic leather which arePVA sizing method and ironing method.3.4.1 PVA sizing3.4.1.1 The pu...[继续阅读]