The definitions of wet-laid non-woven fabrics and dry-laid non-woven fabrics are completely different in terms of production equipment, technology and raw materials.
First, the fiber length of imported wet-laid non-woven fabrics is mostly within 10mm, and some special products can be within 20mm, but only a small amount is added.
The fiber length used in imported dry-laid non-woven fabrics is generally more than 38mm, and some are more than 20mm, but only a small amount is added.
Second, imported wet-laid non-woven fabrics have different proportions of natural degradation functions, while most imported dry-laid non-woven fabrics cannot naturally degrade and only crack.
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.
Third, from the perspective of fiber web formation and shaping, the production process of non-woven fabrics is generally divided into feeding, carding (combing), web forming (shaping), curing (drying), etc.
The key is that imported wet-laid non-woven fabrics are formed into a web (shaped) in liquid (slurry), while imported dry-laid non-woven fabrics are completed in dry conditions.
Suzhou ptfe filter membrane manufacturer supplies imported wet-laid non-woven fabrics, polyester non-woven fabrics, polypropylene non-woven fabrics and other non-woven fabrics. We have a complete service system, caring before sales, attentiveness during sales, and rest assured after sales! The company can provide samples and arrange sales personnel for door-to-door service if there are other requirements.
You are welcome to come to the company for inspection or enter the store to consult us at any time.
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