There are many types of non-woven fabrics on the market now. Japanese wet-laid non-woven fabrics are one of the many types of non-woven fabrics. Let us take a look at them today.
Japanese wet-laid non-woven fabric is a kind of fabric that does not require spinning and weaving. It just orients or randomly arranges short textile fibers or filaments to form a fiber mesh structure, and then uses mechanical, thermal bonding or chemical methods to form a web structure. Reinforced by other methods.
Production process: The raw material of wet-laid non-woven fabric is 100% polyester chips.
Using virgin polyester chips as raw materials, it is made through melt spinning, high-speed drawing, and cooling and crystallization.
The forming principle of Japanese wet-laid non-woven fabrics is to dissolve the fiber-forming polymer in an appropriate solvent to obtain a solution with a certain composition, a certain viscosity and good spinnability, which is called spinning solution.
The spinning solution can also be obtained directly from homogeneous solution polymerization.
The polymer swells before dissolving, that is, the solvent first penetrates into the polymer, causing the distance between the macromolecules to continuously increase, and then dissolves to form a uniform solution.
The whole process takes a long time, and the speed of the swelling process has an important impact on the dissolution speed.
Before spinning, the polymer solution must go through pre-spinning preparation processes such as mixing, filtration and degassing to make the properties of the spinning stock solution uniform, remove gel blocks and impurities entrained in it, and remove the liquid. bubbles in.
In the production of viscose fiber, pre-spinning preparation also includes a maturation process to make the viscose have the necessary spinnability.
Suzhou ptfe filter membrane manufacturer supplies imported wet-laid non-woven fabrics with good filtration, isolation, high tensile strength, good permeability, high temperature resistance, aging resistance, corrosion resistance, etc.
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