The difference between imported dry-laid non-woven fabrics and wet-laid non-woven fabrics

The exact name of non-woven fabric should be non-woven fabric.

Because it is a fabric that does not require spinning or 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 reinforce it. become.

There are many types of non-woven fabrics on the market today. In terms of technology, there are dry-laid non-woven fabrics and wet-laid non-woven fabrics, etc., and the differences between dry-laid non-woven fabrics and wet-laid non-woven fabrics are The main differences are as follows: In terms of fiber length: the fiber length of imported dry-laid non-woven fabrics is generally more than 38mm, and the fiber length of wet-laid non-woven fabrics is mostly within 10mm.

Distinguish from the perspective of environmental protection: Most imported dry-laid non-woven fabrics cannot be naturally degraded, but only crack, while wet-laid non-woven fabrics have different proportions of natural degradation functions.

Natural degradation and pyrolysis are not the same concepts. Natural degradation means that non-woven fabrics turn into humic plants under natural conditions within a certain period of time, and do not produce harmful substances that have an impact on the environment.

Pyrolysis is the addition of degradable substances during the fiber spinning process. Under the influence of natural conditions within a certain period of time, the fiber products will crack. In fact, the chemical composition of the fiber products has not changed at all, and the environmentally harmful substances remain. Existence, long-term accumulation of damage to soil and water sources will cause irreparable disaster.

From the perspective of fiber web formation and shaping, the general process of non-woven fabric production is: feeding, carding, web shaping, curing, etc.

Wet-laid non-woven fabrics are formed into a web (shaped) in a liquid (slurry), while imported dry-laid non-woven fabrics are formed under dry conditions.

Suzhou PTFE filter membrane manufacturer provides imported dry-laid non-woven fabrics and other types of non-woven fabrics. Interested parties can contact us by phone or enter the store for consultation and purchase.

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