How to distinguish between stretch film and plastic wrap

Many people don't know how to distinguish the difference between plastic wrap and stretch wrap film, or even how to distinguish their uses. Today, ZHX stretch stretch film manufacturers will tell you how to distinguish stretch film and cling film.

Many people have a misunderstanding about stretch film. Artificial stretch film is a poor quality cling film, and cling film is divided into PE and PVC. PE is a bit like a plastic bag with cheaper material, and PVC bag food looks brighter.

PVC is used for packaging fresh fruits and vegetables. Like stretch film, it is usually a low-quality PVC film. If there are too many impurities or opaque and bright, it cannot be used on packaged food. In fact, stretch film has higher tensile strength and transparency, but it cannot be used for food packaging. Transparent food-grade packaging can package food with slightly higher tensile strength, while cling film is more expensive.

Stretch wrap film is also called elastic film. It can be used for self-adhesive elastic stretch wrapping of the film itself, and the product is tightly wound through the viscoelasticity of the film surface and the stretch tension used to achieve the purpose of protecting the product.

Wrapping packaging film can be used for transportation packaging, such as packaging of large pallets, packaging of containers and boxes, as well as short-distance transportation and packaging sales, such as daily necessities packaging, stainless steel, plastic tubes, packaging profiles, plastics, decorative panels, floor rolls, carpets Coil and so on.

According to the method of use, it can be divided into mechanically stretched films and hand stretched films. Most stretched films are transparent. A few black mechanically stretched films are mainly suitable for more expensive products. They are not intended to attract people’s attention. They are mainly used for Anti-theft.

Cling film does not require high self-adhesiveness, so the amount of polyisobutylene is less, and polyisobutylene is mainly used to improve the flexibility and adhesion of self-adhesive products.

Cling film is a kind of plastic packaging product that people usually use to keep fresh. There are three kinds of plastic wrap on the market, polyethylene, this material is mainly used for food packaging such as fruits and vegetables, and the semi-finished products purchased on the market are all made of this material. The second type is called polyvinyl, which can also be used for food packaging. The third one is polyvinylidene chloride, which is mainly used for the packaging of some cooked foods.

Due to the carcinogenicity of the plasticizers used for PVC stretch films and the high production cost of PVDC, most of the fresh-keeping films in this country tend to use PE as a raw material.