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Raw Materials for Wet-laid Nonwoven Fabric

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Raw Materials for Wet-laid Nonwoven Fabric

2017-11-02 14:00:45
Raw materials for wet-laid nonwoven fabric

In recent years, with the development of science and technology, the type of fiber raw materials used in wet-laid nonwovens has not only limited to traditional plant fibers, such as wood fiber, cotton, linen and other raw materials commonly used in the paper and textile industry. Today's raw materials include natural fibers such as plant fibers and animal fibers, and chemical fibers.

Wet-laid nonwovens of chemical fiber raw materials more and more types, mainly divided into the following categories: organic and inorganic two kinds of fiber. Organic and synthetic fibers and synthetic fibers such as polyester fiber, polyamide fiber, polypropylene clear fiber, polyvinyl alcohol fiber and viscose fiber, carbon fiber and synthetic fiber and biological fiber. Inorganic class of glass fiber, ceramic fiber, powder carbon fiber, blast furnace dry slag fiber, basalt fiber and so on. Chemical fiber in the textile industry, such as polyester fiber, aromatic polyamide fiber, carbon fiber, lyocell fiber and spandex, nylon, polyolefin fiber, short adhesive Fibers, acrylonitrile-based fibers, and the like can be used as raw fibers for wet nonwoven fabrics. Chemical fiber market, a large proportion of wet non-woven raw materials are more adequate sources. It is worthwhile to put forward the functional chemical fiber, the research of such fibers has become a hot research in recent years, the so-called functional fiber, that is, by adding some special materials, special features such as conductive, flame retardant, sterilization, and other functions.

Wet-laid nonwovens on the raw fiber is the main requirement is that it can be evenly dispersed in water, easy to flocculate and into the group, in the entire pulp and into the network should be a good suspension. In order to ensure that the fibers are evenly dispersed in water, the length ratio of the fibers used in the wet-laid nonwoven fabric should be small and the length distribution should be narrow and the wet modulus should be high. In addition, when the fiber moisture absorption, curl small, but also conducive to the dispersion of fiber.