Coating process for fully-degradable recyclable packaging material

A packaging material and coating process technology, which is applied in the field of fully degradable and recyclable packaging material coating process, can solve the problems affecting the full degradation and recycling of packaging materials, and achieve high tear resistance, high practicability, and improved The effect of overall strength

Inactive Publication Date: 2020-08-25
欧伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention intends to provide a fully degradable and recyclable packaging material coating process to solve the problem of affecting the full degradation and recycling of packaging materials after glue coating

Method used

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  • Coating process for fully-degradable recyclable packaging material
  • Coating process for fully-degradable recyclable packaging material
  • Coating process for fully-degradable recyclable packaging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The fully degradable and recyclable packaging material coating process in this embodiment, such as figure 1 shown, including the following steps:

[0039] S1. Selection and pretreatment of the main body of packaging materials: such as figure 2 As shown, the fully degradable paper 1 is selected as the main body of the packaging material, and the powder removal and static elimination processes are performed on the fully degradable paper 1 .

[0040] S2, equipped with glue: Stir and mix dehydration malic acid resin, dammar resin, acrylic emulsion and water, the mass ratio of dehydration malic acid resin to dammar resin and acrylic emulsion is 2:1:2, and the solid content of the glue is 45%.

[0041] S3. Preheating the glue: heat the glue prepared in step S2 to 70-80°C and keep it warm. The temperature of the glue in this embodiment is 80°C.

[0042] S4. Coating glue: On the surface of the fully degradable paper 1 selected in step S1, evenly coat the glue in step S3, an...

Embodiment 2

[0046] The difference between this example and Example 1 is that the mass ratio of the dehydrated malic acid resin to the dammar resin and the acrylic emulsion is 1.9:1:1.9, and the solid content of the glue is 44%.

Embodiment 3

[0048] The difference between this example and Example 1 is that the mass ratio of the dehydrated malic acid resin to the dammar resin and the acrylic emulsion is 2.1:1:2.1, and the solid content of the glue is 46%.

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Abstract

The invention relates to the technical field of packaging material coating processes, and particularly discloses a coating process for a fully-degradable recyclable packaging material. The coating process comprises the following steps: S1, selection and pretreatment of a main packaging material body; S2, preparation of glue: mixing dehydrated malic acid resin, dammar resin and an acrylic emulsionaccording to a mass ratio of (1.9-2.1): 1: (1.9-2.1), adding water, and carrying out mixing and stirring, wherein the solid content of the glue is 44%-46%; S3, preheating of the glue: heating the glueto 70-80 DEG C and carrying out heat preservation; S4, glue coating: evenly coating the surface of the main packaging material body with the glue; and S5, drying: drying the main packaging material body in sections. According to the invention, the main packaging material body is fully-degradable paper, and the dehydrated malic acid resin, the dammar resin and the acrylic emulsion in the glue areharmless to the environment and have excellent viscosity, so the packaging material does not have the problems of difficult degradation and environmental pollution. Moreover, the glue can be dissolvedin a water solvent so as to be separated from the fully-degradable paper, so the fully-degradable paper can be recycled, and resources are saved.

Description

technical field [0001] The invention relates to the technical field of coating technology for packaging materials, and specifically discloses a coating technology for fully degradable and recyclable packaging materials. Background technique [0002] Packaging materials refer to the materials used to meet product packaging requirements such as packaging containers, packaging decoration, packaging printing, packaging and transportation, including metal, plastic, glass, paper, composite materials and other main materials. Among them, due to the advantages of light weight, high elongation, and high transparency, plastics are widely used in chemical, building materials, food and pharmaceutical industries. However, plastics are not easy to degrade under natural conditions, which will cause long-term and potential ecological problems. Therefore, in order to solve the problems of plastics not easy to degrade and pollute the environment, a fully degradable and recyclable packaging ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/12D21H23/30D21H25/06C09J133/04C09J167/04C09J193/00
CPCC08L2205/03C09J133/04C09J167/04D21H19/12D21H23/30D21H25/06C08L67/04C08L93/00
Inventor 欧伟
Owner 欧伟
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