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The cause of light yellow in the production process of the stretch film
2017-12-26 10:25:13

 The cause of light yellow in the production process of the stretch film

拉伸膜在生产过程中出现淡黄色的原因

Stretching film will appear yellowish when it is produced. Many people have doubts that if the stretching film appears pale yellow, can it still be used?
 拉伸膜在生产时会出现淡黄色,很多人都有个疑问,拉伸膜出现淡黄色还能用吗?下面为大家讲解在生产过程中出现淡黄色的原因:
 
Strictly speaking, stretch film and color two only colorless, pale yellow appearance is mainly Dov, masterbatch and other additives or process changes, if the color is shallow, and the stretching rate is not affected by the tackiness you can use, if the color is not natural, general quality will be very poor.
 严格来说拉伸膜只有无色和彩色两种,出现淡黄色主要是dov、色母等添加剂或者加工工艺改变造成的,如果颜色浅,拉伸率和自粘性不受影响的话可以使用,如果颜色不自然,一般质量就会很差。
 
Stretch film production technology development today has been very mature, some manufacturers will try to change the formula to stretch film production of different properties, mainly reflected in three aspects: color, tensile rate and self adhesive, single color change does not affect the use of stretch film, you know most of the time due to the melting temperature of different processing set that change will cause the stretch film color, but will not affect the transparency, this is a good stretch film, if the drop rate and the tensile properties of adhesive, stretch film is poor, he may be mixed with impurities.
拉伸膜发展到今天生产工艺已经很成熟,一些厂家会试着改变配方来生产不同性能的拉伸膜,主要反映在三个方面:颜色、拉伸率和自粘性,单一的颜色改变不一定影响拉伸膜的使用,要知道很多时候由于加工设定的熔融温度不同,会引起拉伸膜颜色的变化,但是不会影响透明度,这样的就是好的拉伸膜,如果拉伸率和自粘性能下降,就是差的拉伸膜,可能掺了他杂质。
 
If the color of the stretched film is pale yellow, but the diaphaneity, the stretching rate and the self stickiness do not change, and there is no peculiar smell. It can be used. If four indicators change, do not use it again.
  如果拉伸膜的颜色是淡黄色,但是透明度、拉伸率、自粘性没有变化,而且没有异味,可以使用,如果四个指标出现变化,就不要再用了。