Environmentally friendly antibacterial plastic film and preparation technology thereof

Abstract

The invention discloses an environmentally friendly antibacterial plastic film, which comprises a film matrix and an antibacterial layer covered on the surface of one side of the film matrix. The filmmatrix is prepared from following raw materials in parts by weight: 60 to 70 parts of polyethylene, 20 to 30 parts of poly(beta-hydroxybutyric acid), 3 to 4 parts of modified bamboo powder, 5 to 8 parts of polyethylene wax, 2 to 3 parts of iron stearate, 1 to 2 parts of an antioxidant, and 1 to 2 parts of a plasticizer. The antibacterial layer is formed by painting an antibacterial liquid on thesurface of the film matrix. The invention further discloses a preparation technology of the plastic film. Polyethylene and poly(beta-hydroxybutyric acid) are taken as the film matrix; under the actionof iron stearate, poly(beta-hydroxybutyric acid) can effectively exert the biodegradation performance and a photo degradation performance; then modified bamboo powder is added to enhance the mechanical properties and strength; the antibacterial liquid is painted on the surface of the film matrix to form the antibacterial layer, which has an excellent antibacterial performance, at the same time, the binding force between the antibacterial layer and the film matrix is also enhanced; and the integrity of the plastic film is improved.

Description

technical field

[0001] The invention belongs to the technical field of plastic films, and in particular relates to an environment-friendly antibacterial plastic film and a preparation process thereof. Background technique

[0002] Plastic films are films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins that are used for packaging and as laminations. Plastic packaging and plastic packaging products are taking an increasing share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields. At the same time, it is accompanied by the pollution of the environment by plastic films. Because the components of ordinary plastic films are difficult to decompose, they will stay in the soil for a long time, affecting plant growth, polluting the environment, and do not have antibacterial properties.

[0003] The invention patent with the patent number CN201310550251.2 disclos...

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