6.1.1 The purpose,principle and varieties of embossing6.1.1.1 The purpose of embossingEmbossing is an important post-processing tool for synthetic leather and it is mainly used inthe modification of the surface texture of synthetic leather with coating ob...[继续阅读]

    There are many dyeing methods to microfiber. It can be divided into jig dyeing,overflowdyeing and airflow dyeing according to the equipments. Basing on the process it is divided intohigh-temperature and high-pressure method,and low-temperature and normal-...[继续阅读]

    5.4. 1 The procedure of dry processThe production principle of release paper method is the coatings with different properties arecoated on the surface of moving release paper through reverse roller coating or knife coating,andthen they are dried and cured...[继续阅读]

    The coating agents used in dry process of synthetic leather are materials which can form firmbonding and continuous film on the surface of release paper or bases. It mainly consists of filmforming substance,colorant and solvent which are mixed together at...[继续阅读]

    7.1.1 The definition and development of microfiberAt present,the microfiber has no accurate definition in the world. The definitions given byevery country are slightly different,but they all take the line density as standard. If the linedensity of PET is ...[继续阅读]

    Generally high-grade synthetic leather should undergo finishing process. Through variousfinishing,the softness,smoothness and gloss of leather can be increased,or pattern varieties areimproved,such as suede,dry-milled leather,boarded leather and embossed ...[继续阅读]

    Coating,bonding and sealing are techniques that humankind has used for many thousands ofyears. For a long time,only natural resins,oils and fats were used for these purposes.Shellac,a natural resin secreted by the scaly lac insect,has been used in India f...[继续阅读]

    2.2.1 IsocyanatesAs a rule,isocyanates are obtained by the phosgenation of the corresponding primary amines(Fig.2-1).Fig. 2-1 Manufacture of isocyanates by phosgenation of primary aminesAlternatively,phosgene - free manufacturing processes have been devel...[继续阅读]

    3.1.1 Definition of nonwoven fabricsThe nonwoven fabric is a kind of fiber products and its processing technology of nonwovenfabric is a new technology for the textile industry. The nonwoven fabric industry is a newlydeveloping field involving in a wide r...[继续阅读]

    7.3.1 Collection7.3.1.1 MethodsThe purpose of collection is to combine the separate tow together to achieve reasonable lineardensity. There are usually one-step and two-step process.One-step methodThe tow ejected from several spinneret combined together t...[继续阅读]