Anti-pollution low-temperature heat-sealing polyethylene film easy to tear off

Abstract

The invention discloses an anti-pollution low-temperature heat-sealing polyethylene film easy to tear off. The polyethylene film consists of the following components in part by weight: 45 to 65 parts of polyethylene resin, 15 to 30 parts of EVA (ethylene-vinyl acetate) and 3 to 5 parts of an additive. According to the invention, the polyethylene resin is modified by matching of EVA and the additive; when the prepared polyethylene film is made into a plastic package, a sealing temperature is low, so that the phenomenon of false sealing is effectively avoided; after the plastic package is sealed, the polyethylene film is still easy to tear off, so that the use convenience is improved.

Description

technical field [0001] The invention belongs to the field of packaging films, in particular to an anti-pollution, low-temperature heat-sealable and easy-to-remove polyethylene film. Background technique [0002] At present, plastic products have been widely used in the market, among which plastic packaging accounts for an increasing proportion of plastic products, especially in the fields of medicine and chemical industry, and polyethylene film is widely used because of its non-toxicity and safety. Applied to the packaging of medicines, the plastic packaging bags made of ordinary PE film are all completed by large-scale machinery. Due to the characteristics of the existing PE film itself, the packaging bags often have the following disadvantages when sealing: heat sealing temperature High, usually up to 115-125 ° C, and due to the high temperature, it needs to reach a certain strength, prolong the mechanical action time, and increase the production force virtually; when the ...

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Problems solved by technology

[0002] At present, plastic products have been widely used in the market, among which plastic packaging accounts for an increasing proportion of plastic products, especially in the fields of medicine and chemical industry, and polyethylene film is widely used because of its non-toxicity and safety. Applied to the packaging of medicines, the plastic packaging bags made of ordinary PE film are all completed by large-scale machinery. Due to the characteristics of the existing PE film itself, the packaging bags often have the following disadvantages when sealing: heat sealing temperature High, usually up to 115-125 ° C, and due to the high temperature, it needs to reach a certain strength, prolong the mechanical action time, and increase the production force virtually; when the sealing temperature is high and the conduction is slow, the shape of the film is easy to change. Increased thickness will easily cause wrinkles and damage the seal, resulting in the phenomenon of "false seal", which will reduce the product qualification rate and affect the quality of the product; if the powder medicine in the package is heat-sealed when it stays at the seal, it will also affect the heat-sealing performance. Effect; it is not easy to uncover after sealing