Treatment method for increasing adhesive force of packaging material

Abstract

The invention discloses a treatment method for increasing an adhesive force of a packaging material. By performing corona treatment on an outer layer paper web and performing ozone treatment on an outer layer cast film, the adhesive force between outer layer PE and paper is enhanced; and by performing corona treatment on an inner layer paper web, performing ozone treatment on a compound layer cast film and performing corona treatment on an aluminum foil, the adhesive force among all layers during lamination and compounding is increased, and the mixing cost is saved. According to the scheme, additional combined corona treatment and ozone treatment are performed on the outer layer and the compound layer, so that the outer layer adhesive force and the compound layer adhesive force of the seven-layer sterile packaging material are better and stable. Based on the scheme, equipment can generally reach a speed of 200m / min, the adhesive force can be ensured, and the production efficiency is improved, thereby being adapted to the requirements for large-scale production at present; and the treatment method has a wider raw material application range, and can basically avoid the phenomenon of a poor adhesive force even in case that the raw materials are instable, thereby reducing the production of defective products, and lowering the product cost.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a treatment method for increasing the cohesive force of packaging materials. Background technique [0002] Packaging material is the abbreviation of packaging material, which refers to the materials used to manufacture packaging containers, packaging decoration, packaging printing, packaging and transportation to meet product packaging requirements. Take a common liquid aseptic package as an example, which uses aluminum foil as a barrier material to make a rectangular carton package with a straw straw hole. [0003] For the packaging materials used in aseptic packaging, the existing processing methods have certain limitations, which often lead to poor bonding of the outer layer PE, and poor bonding of the composite layer resulting in delamination, whether it is the outer layer bonding Whether the strength is weak or the composite layer is delaminated will affect the ...

AI Technical Summary

Problems solved by technology

[0003] For the packaging materials used in aseptic packaging, the existing processing methods have certain limitations, which often lead to poor bonding of the outer layer PE, and poor bonding of the composite layer resulting in delamination, whether it is the outer layer bonding Whether the strength is weak or the composite layer is delaminated will affect the quality of the product content, resulting in bad bags, bulging bags, sour bags, forming a certain uncertainty in product quality, and affecting the appearance of the product