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Method for preventing dialysis of end face of liquid packaging paper material

A paper-based packaging material, end-face technology, applied in packaging, wrapping paper, transportation and packaging, etc.

Inactive Publication Date: 2012-06-20
青岛人民印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a method for preventing dialysis of the end face of paper liquid packaging materials, so as to solve the problem of mutual dialysis between the paper section and the liquid at the overlapping parts of the paper packaging materials

Method used

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  • Method for preventing dialysis of end face of liquid packaging paper material
  • Method for preventing dialysis of end face of liquid packaging paper material
  • Method for preventing dialysis of end face of liquid packaging paper material

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Embodiment Construction

[0019] Such as figure 1 As shown, a method for anti-dialysis of the end surface of a paper liquid packaging material, which is to electrostatically spray the end surface of the paper packaging material 1 inside the lap joint of the paper 1 end surface with LDPE thermoplastic powder or food-grade thermosetting polyester The powder forms a powder coating, and then baked at a high temperature of 180°C, so that the powder material is melted and combined into a plastic layer 2, and is evenly and tightly bonded to the paper packaging material 1, covering the end surface of the paper packaging material 1, insulating the paper The contact between the section of the quality packaging material 1 and the outside world. figure 2 Shown is the structure of the seam of the above-mentioned paper liquid packaging material 1 after lapping is completed. It can be seen that the end surface of the paper packaging material 1 inside the seam is covered by the plastic layer 2, and the paper liquid ...

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Abstract

The invention discloses a method for preventing dialysis of the end face of a liquid packaging paper material. The method is characterized by comprising the following steps of: spraying plastic powder on the end face of paper at the inner side of an end overlapping seam of the packaging paper material to form a powder coating; heating the powder coating; obtaining a plastic coating after roasting at a high temperature, leveling and solidifying; and coating the end face of the entire paper by the plastic coating. The method disclosed by the invention has the advantages of simple process, convenience for operation and very good economic and social benefits.

Description

technical field [0001] The invention relates to a method for preventing dialysis at the end face of a liquid packaging box made of paper-based liquid packaging materials, and belongs to the technical field of packaging material production Background technique [0002] At present, the packaging containers for fresh milk, fruit juice, tea drinks and other fluid foods are in the form of iron cans, plastic bottles and paper-aluminum-plastic multi-layer composite flexible packaging boxes. Features such as exquisite appearance have become the main form of liquid packaging. [0003] After the packaging box is filled with liquid contents, the liquid will seep through the paper section at the lap joint of the box edge and the paper inside the packaging material, resulting in leakage of the packaging box or deterioration of the contents. Solving this problem has become a technical problem that those skilled in the art have been eager to solve. At present, the anti-dialysis technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/42B65D5/02
Inventor 刘宝落
Owner 青岛人民印刷有限公司
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