Characteristics of plastic bags and Scope

Characteristics of plastic bags and Scope

Material:

Polyethylene 

Referred to as PE. Is the addition polymerization of ethylene polymer organic compound. Polyethylene is recognized as the world's best materials in contact with food. Non-toxic, tasteless, odorless, food packaging hygiene standards. Polyethylene film, light and transparent, with moisture, oxidation, acid, alkali, tightness in general, excellent sealing properties. Is the largest amount of plastic packaging and printing, the most important material. It is divided into two kinds of LDPE and HDPE.

LDPE

Low-density polyethylene, referred to LDPE, plastic packaging and printing industry for countries in the largest amount of variety. Specific gravity of 0.92 to 0.93, can float on water. Low crystallinity (60%), pressure 1000 ~ 3000kg /c㎡ bulk polymerization, it is also called high-pressure polyethylene. At 23 ° C, density of about 0.92. Suitable for food packaging, fiber products packaging, cosmetic packaging.

HDPE-- high-density polyethylene

High density polyethylene, referred HDPE, with low pressure polymerization, it is also called low-pressure polyethylene. Milky white, shiny surface is poor. Available blown film processing method and T-die extrusion process. Heat-resistant cooking, cold resistance, cold, moisture, air, good isolation performance, not easy to damage, high strength, easy opening.

Scope

PE scope of application is very plant, usually all items can be packaged using this material. Is currently on the market are more packaging materials, choose wide, generally the most commonly used material PE are: electronics, hardware, clothing (PE materials used by the electricity supplier as bags) courier bags, toys, food.