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鉴别塑料包装袋有哪些技巧?

发布日期:2021-08-19 作者:www.jnsuliao.com 点击:

在选择定做塑料包装袋厂家的时候一定要找靠谱的,必须要求全新原料生产制作,因为劣质的塑料包装袋是有相当危害的。众所周知,塑料包装袋是由化学物质制成,而不少加工坊为了降低生产成本采用添加回收料,这种塑料袋生产出来肯定是不合格的。当然不要草木皆兵,根据所用材料的不同,我们来辨别两种塑料袋的材质。
When choosing customized plastic packaging bag manufacturers, we must find reliable ones. We must require new raw materials for production, because inferior plastic packaging bags are quite harmful. As we all know, plastic bags are made of chemicals, and many processing workshops add recycled materials in order to reduce production costs. This kind of plastic bag is definitely unqualified. Of course, don't be careless. According to the different materials used, we can distinguish the materials of the two kinds of plastic bags.
比如我们平时见到多的,用来包装食品的塑料袋,因为其组成材料是聚乙烯的薄膜,这种聚乙烯是无毒的。这种材料的缺点是强度不够,密封性也不够,并且不能耐高温,所以不能用来包装茶叶香料等物品。
For example, we usually see plastic bags used to package food, because its constituent material is polyethylene film, which is non-toxic. The disadvantage of this material is that its strength is not enough, its sealing property is not enough, and it can not bear high temperature, so it can not be used to pack tea, spices and other items.
但还有一种叫做聚氯乙烯,一字之差,就完全不是同一个东西。聚氯乙烯虽然也没有毒性,但人们通常在其用途中掺杂上添加剂,这种添加剂对人体伤害很大,这种塑料袋是不能用来包装食品的,通常是用来做雨衣、鞋底、手提包一类。
济南方便袋
But there is another kind called polyvinyl chloride. By one word, it is not the same thing at all. Although polyvinyl chloride is not toxic, people usually mix additives in its use. This additive does great harm to human body. This plastic bag can not be used to package food. It is usually used to make raincoats, soles and handbags.
其实方法很简单,首先是表面的特征,聚乙烯的表面是乳白色的,摸上去手感十分光滑,在抖动的时候,声音也比较清脆。然后在燃烧的时候,聚乙烯易燃,颜色为黄色,会有粘液滴落,燃烧的气味跟蜡烛十分相似。
In fact, the method is very simple. The first is the characteristics of the surface. The surface of polyethylene is milky white. It feels very smooth. When shaking, the sound is also crisp. Then, when burning, polyethylene is flammable, the color is yellow, there will be mucus dripping, and the burning smell is very similar to that of a candle.
使用聚氯乙烯定做塑料袋如果不掺杂色素,是比较透明的,摸上去跟聚乙烯不同,有些发粘,在抖动的时候也并不清脆,略有些低沉,并且不容易燃烧,离开火焰就会熄灭,火焰的颜色是绿色,跟聚乙烯差别明显。
If the PVC customized plastic bag is not doped with pigment, it is relatively transparent. It feels different from polyethylene. Some are sticky. It is not crisp when shaking, a little low, and it is not easy to burn. It will go out when leaving the flame. The color of the flame is green, which is significantly different from polyethylene.
大家如果需要定做塑料袋,根据切实情况选择合适的材料。对于平时使用中只要注意观察,掌握塑料袋的材质优劣,合格的塑料袋关乎到我们的健康生活。
If you need custom-made plastic bags, choose the appropriate materials according to the actual situation. For ordinary use, we only need to pay attention to observation and master the material quality of plastic bags. Qualified plastic bags are related to our healthy life.