Easy-to-tear plastic film packaging is easy to open the packaging family is an important member, it is a relatively thick, relatively large hardness bowl-shaped container and a layer of relatively soft texture, easy to tear the cover composition.

Easy to tear film first appeared instant noodles bowl packaging, and then tofu, yogurt, jelly, pudding and other packaging also appeared easy tear film.

Easy to tear film has several requirements: 1: high barrier properties. Because tofu, yogurt, jelly, pudding, etc. are some very easy to corruption, deterioration of food, and the vast majority of these foods are stored at room temperature, and some require a relatively long shelf life, usually 3 months to six months or so, so Easy to tear film material barrier is very important. Usually easy to tear film are used relatively high composite structure.

Second, moderate heat sealing. Easy to tear film in the production, storage and transportation, sales, carrying the process to be solid sealing, not easy to break, but in the opening to be easy to open. Because, like jelly, yogurt, biscuits and other food consumption targets are mainly children. It is necessary to seal a solid, but also easy to tear. This is a difficult to tear film.

Third, the sealing should have good anti-pollution and low-temperature heat sealing. Because easy to tear film in the packaging process, sealing often powder and liquid filling and other contaminated, at the same time, as technology advances, packaging speed is also constantly upgrade.

Fourth, the film should have a good contraction. Because easy to tear film is a combination of film and the cup body, packaged content after cooling, the volume will have a certain shrinkage, if the corresponding shrinkage of the film, the packaging will appear full, smooth, smooth, good effect.

5, in yogurt and other food packaging, the film also has a special requirement is easy to perforation, in order to facilitate the habit of use.

In addition, many occasions also require easy tear film is not all torn, only torn in half. This requires that the torn cover film be erected rather than bounced back. Plastic cover membrane rebound relatively strong. In order to not rebound, in many occasions need to use aluminum-plastic composite cover film.

The earliest appearance of easy tear film is a composite structure of aluminum foil and hot melt adhesive. Because the aluminum foil used in the production of materials are more than 99% purity of high-quality aluminum. This high-purity high-quality aluminum in the production process energy consumption amazing, expensive. Therefore, Kunshan blow molding process is easy to tear film surface material for nylon, polyester or paper; middle barrier layer of vacuum aluminum, but also in the PET on the silicon oxide or alumina. However, this film has a defect, that is opaque.