Water-based coated composite environment-friendly packaging material and preparation process thereof

Abstract

The invention provides a water-based coated composite environment-friendly packaging material and a preparation process thereof, and belongs to the technical field of packaging. The composite environment-friendly packaging material comprises a second composite film, the second composite film is obtained by a first composite film and a polyolefin film through a solvent-free extrusion compounding technology, the first composite film comprises a BOPP printing layer and an aluminum-plated PET layer, the BOPP printing layer and the aluminum-plated PET layer are bonded into a whole through a spraying film, the BOPP printing layer and the spraying film are bonded into a whole through an upper adhesive layer, the upper adhesive layer is a water-based primer adhesive, the BOPP printing layer is prepared by printing a BOPP film by adopting a satellite type flexographic printing machine, and the aluminized PET layer is connected with the polyolefin film. Starting from VOCS emission treatment and aluminum layer protection, the green and environment-friendly composite packaging material without VOCS emission and without aluminum layer delamination is prepared by adopting the water-based primer adhesive, optimizing a lamination layer formula, adopting a solvent-free compounding mode and the like, and the requirements of markets and consumers for health, sanitation and environmental protection are met.

Description

technical field [0001] The technical field of packaging of the present invention specifically relates to a water-based coated composite environmental protection packaging material and a preparation process thereof. Background technique [0002] The development of flexible packaging and the development of the food industry complement each other. In recent years, with the strengthening of domestic product quality and environmental protection awareness, green packaging materials and processes are increasingly favored by the composite film packaging industry and flexible packaging end users. The primers of existing packaging materials all use solvent-based adhesives and ethyl ester as a diluent, which leads to large emissions of volatile organic compounds (VOCS), and there is a relatively large environmental risk. [0003] Traditional extrusion coating packaging materials use polyurethane adhesives, which are diluted with ethyl ester as a solvent and coated by anilox rollers. A...

AI Technical Summary

Problems solved by technology

The primers of existing packaging materials all use solvent-based adhesives and ethyl ester as a diluent, which leads to large emissions of volatile organic compounds (VOCS) and a greater environmental risk

[0003] Traditional extrusion coating packaging materials use polyurethane adhesives, which are diluted with ethyl ester as a solvent and coated by anilox rollers. After curing for 24 ho

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