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Problems And Solutions Encountered In The Production Of Spunbond Nonwoven Fabric
Jul 24, 2017



Problems and solutions encountered in the production of Spunbond Nonwoven Fabric

1. The type of abnormal fiber of polyester cotton

(a) monofilament: extends incomplete fiber, the fiber can cause abnormal dyeing, less impact on without staining of Spunbond Nonwoven Fabric, but for artificial leather base cloth of water or needle cloth has the serious influence. (2) and silk: extension after more than two or three fiber stick together, this kind of fiber can cause abnormal dyeing, less impact on without staining of Spunbond Nonwoven Fabric, but for artificial leather base cloth of water or needle cloth has the serious influence. (3) gelatinous: during the extension period, Spunbond Nonwoven Fabric it produces broken silk or yarn, which makes the fibers not extend into hard cotton at all. This product can be divided into primary glue, secondary glue, and three - level glue, etc. These abnormal fiber after carding engineering, often deposited on the clothing which brings the problems such as poor cotton net forming or back, for most of Spunbond Nonwoven Fabric products of this material can cause serious quality defects. (4) no oil cotton: during the extension period because cars were driving cause no oil on the fibers, the fiber is usually dry and hot, besides Spunbond Nonwoven Fabric production process caused by static electricity, and semi-finished products in the finishing on the problem.

The reasons for the incombustibility of spinning Spunbond Nonwoven Fabric

A: polyester cotton with the method of flame retardant effect reasons are as follows: (a) conventional polyester cotton limit oxygen index of 20-22 (content of 21% oxygen concentration in the air), belongs to a kind of combustible fibers, burn easily lit but slower. (2) if the polyester slice is changed into qualitative degeneration, it will have a hard burning effect. Most long-acting type flame retardant fibers using modified polyester slice of the flame retardant polyester cotton production, the main modification agent for phosphorus series compounds, Spunbond Nonwoven Fabric use of phosphorus in high heat and oxygen in the air, reduce the oxygen content of the characteristics of good flame retardant effect. (3) another method for making polylipids incombustible is surface treatment, which is considered to reduce the flame retardant effect after many processing. (4) the polyester cotton has the characteristic that the heat will contract, and when the fiber meets the flame, it is not easy to ignite because of shrinkage, producing the proper flame retardant effect. (5) polyester cotton has a high heat melt drop, and the melting drop phenomenon of polyester cotton can also be taken away

Three low melting point fiber is the most suitable processing qualitative temperature

Answer: the existing low melting point fiber are as 110 ℃, melting point but the temperature is low melting point fiber softening temperature, whether Japan 4080, South Korea, South Asia, 4080, 4080 4080 needs to be about 150 ℃ or the far east to completely melt. So the most appropriate when heated Spunbond Nonwoven Fabric processing and finalize the design temperature should be in accordance with the most part in low temperature of 150 ℃ x 3 minutes for the minimum requirements.

4. Causes of static electricity during spinning Spunbond Nonwoven Fabric

Answer: Spunbond Nonwoven Fabric production during electrostatic problem, contact with clothing mainly because the fiber and the air moisture content is too low to cause, can be divided into the following number: (a) the weather is too dry, humidity is not enough. (2) when there is no oil on the fiber, there is no antistatic agent on the fiber. Because the moisture regain of polyester cotton is 0.3 percent, the result of lack of antistatic agent produces static electricity during production. (3) low fiber oil content, the relative amount of static electricity can produce static electricity. (4) SILICONE polyester cotton because the agent has special molecular structure, little oil on the water, is relatively easier to happen during the production of electrostatic, usually feel slippery degrees and electrostatic into positive ratio, the more slippery SILICONE cotton static electricity.