塑料包装袋是以组成或天然的高分子树脂为首要资料。添加各种助剂后，在必定的温度和压力下具有延展性，冷却后可以固定其外形的一类资料。

Plastic packaging bag is based on the composition or natural polymer resin as the primary information. After adding various additives, it has ductility under certain temperature and pressure, and its shape can be fixed after cooling.

天然或组成高分子树脂分子在熔融状态下，且附近均匀的分布助剂分子的进程叫塑化，早年抵达了这个进程叫早年塑化了，还没有抵达，被认为没有塑化。

When the natural or constituent polymer resin molecules are in the molten state and the auxiliary molecules are evenly distributed nearby, the process is called plasticization. If this process is reached in the early years, it is called early plasticization. If it has not arrived yet, it is considered that there is no plasticization.

塑料包装袋当然如今是二位包装资料，其适用面还不如纸及纸板的包装。但是塑料真空包装业每年按5%的速度在打开，而其他塑料资料，包括纸及纸板，金属，玻璃，陶砙，麻棉等只以2%的速度在添加。

Of course, plastic bags are now second-class packaging materials, and their applicability is not as good as paper and paperboard packaging. However, the plastic vacuum packaging industry is opening at a rate of 5% every year, while other plastic materials, including paper and paperboard, metal, glass, pottery, linen and cotton, are only added at a rate of 2%.

通常当我们去购买食物时，我们总会看到很多蔬菜都是用塑料袋封闭的。这是为了防止蔬菜腐烂。然后我们可以买一些蔬菜，买些蔬菜。

Usually when we buy food, we always see that many vegetables are sealed in plastic bags. This is to prevent vegetables from rotting. Then we can buy some vegetables, buy some vegetables.

保留剩余的蔬菜，以后再吃。如果天气很冷，可以放一两天，但夏天没有冰箱。

Keep the remaining vegetables and eat them later. If the weather is very cold, you can put it for a day or two, but there is no refrigerator in summer.

此时，塑料袋可以派上用场。不要碰一些没有吃过的蔬菜，然后用旧报纸将蔬菜包在塑料袋里。小心不要绑它们。塑料袋的主要特点是：

At this point, plastic bags can come in handy. Don't touch some vegetables you haven't eaten, and then wrap them in plastic bags with old newspapers. Be careful not to tie them. The main features of plastic bags are:

，密度小，比强度高，包装成品率高，即每单位质量的包装体积或包装面积大小可以是二，大多数塑料袋具有良好的耐化学性，良好的耐酸性，耐碱性和各种溶剂。它们可以长时间放置而不会氧化。

First of all, the density is small, the specific strength is high, and the packaging yield is high, that is, the packaging volume or packaging area per unit mass can be two. Most plastic bags have good chemical resistance, good acid resistance, alkali resistance and various solvents. They can be stored for a long time without oxidation.

三，成型容易，所需的成型能耗低于钢等金属材料。

3、 It is easy to form, and the required forming energy consumption is lower than that of metal materials such as steel.

四，它具有良好的透明度，易于着色。

4、 It has good transparency and is easy to color.

五，具有良好的强度，单位重量强度高，耐冲击，易于改性。

5、 It has good strength, high strength per unit weight, impact resistance and easy modification.

六，加工成本低。

6、 Low processing cost.

第七，绝缘性佳。

Seventh, good insulation.

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The wonderful contents of this article are provided by Jinan plastic bag customization. There are many wonderful contents on this website. You can click to enter more contents: We have special customer service to answer your questions