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A kind of release heat-sealing packaging paper and its production method

A production method and wrapping paper technology, applied in the direction of wrapping paper, wrapping paper, packaging, etc., can solve the disadvantages of moisture-proof and dust-proof protection of the contents, the wrapping paper cannot realize heat-sealing and adhesion sealing, and the anti-adhesive layer cannot be butt jointed with heat-sealing adhesion and sealing And other issues

Active Publication Date: 2022-07-05
SHANGHAI ZIHUA FILM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wrapping paper with such a structure, its anti-adhesive layer is partially counter-coated, and the anti-adhesive layer on the wrapping paper cannot be butt-jointed with heat-sealed adhesive seal, so that the wrapping paper cannot be completely heat-sealed, adhesively sealed, and the seal is not tight. , which is unfavorable to the moisture-proof and dust-proof protection of the contents; at the same time, the anti-adhesive layer is partially counter-coated, and its industrial-scale coating production process is also difficult to realize

Method used

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  • A kind of release heat-sealing packaging paper and its production method
  • A kind of release heat-sealing packaging paper and its production method

Examples

Experimental program
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Effect test

Embodiment 1

[0049] see figure 1 , a schematic view of the cross-sectional structure of the release heat-sealing wrapping paper of Example 1.

[0050] The main body of the release heat-sealing wrapping paper is a paper base material 10 . In this embodiment, the gram weight of the paper substrate 10 is about 30 g / m 2 .

[0051] The entire outer surface of the paper substrate 10 is covered with a layer of heat sealing layer 11 , and the entire surface of the inner surface (the inner surface facing the content) is covered with a layer of release heat sealing layer 12 .

[0052] The release heat seal layer 12 is formed by coating with a water-based coating materialized by release heat press. Among them, the formulation of the water-based coating that is plasticized by release heat compression includes 93% thermoplastic water-based acrylic emulsion and 6% water-based polyethylene wax emulsion, and the solid content of the thermoplastic water-based acrylic emulsion is about 40-45%, and the wa...

Embodiment 2

[0064] The release heat-sealing wrapping paper of Example 2 is different from Example 1 in that: 1) The gram weight of the paper base material 10 of Example 2 is 60 g / m 2 2) The formulations of the water-based paints that are used in the release heat-sealing layer 12 of Example 2 are different. Specifically, the formula of the water-based paints that are released by hot-compression and plasticization comprises 86% thermoplastic water-based paints. Acrylic emulsion and 13% water-based polyethylene wax emulsion, and the solid content of thermoplastic water-based acrylic emulsion is about 42-45%; the solid content of water-based polyethylene wax emulsion is about 42%. In this embodiment, the thermoplastic water-based acrylic emulsion is a product of the model BT-62 purchased from DSM; the water-based polyethylene wax emulsion is a product of the model E-842N purchased from Wengkel Company.

[0065] The preparation method of the release heat-sealing wrapping paper of embodiment 2 ...

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Abstract

The present invention relates to a release heat-sealing packaging paper and its production method, as well as its application in packaging paper for sanitary products; the inventor of the present invention unexpectedly discovered that a specific proportion of thermoplastic water-based acrylic emulsion and purchased from Wengkaier Company After combining the E-842N model water-based polyethylene wax emulsion, a release hot-pressed plasticized water-based coating can be obtained, which can be coated on the entire inner surface of the packaging paper to form a release heat-seal layer, and the outer surface can be coated with hot-pressed plasticized water-based coating. The sealing layer ensures that the inner surface of the packaging paper can achieve release and anti-sticking functions for the contents of sanitary items such as sanitary napkins. The inner and outer surfaces can all achieve heat sealing functions, and the packaging contents can be completely sealed, moisture-proof and dust-proof. , truly protecting the contents; in addition, both surfaces of the paper base material are fully coated, and there is no partial coating. The coating process is simple and easy to achieve industrial scale production; furthermore, packaging paper Both the inner and outer surfaces can be heat-sealed and bonded, and the packaging form is not limited and can be diversified.

Description

Technical field [0001] The invention relates to a release heat-sealing packaging paper and belongs to the technical field of packaging paper. Background technique [0002] At present, the packaging of daily hygiene products such as sanitary napkins, diapers or breast pads usually uses PE film as the packaging carrier. Common packaging forms are: 1) Printing a pattern on the front of the PE film, coating the back with silicone coating, and then Directly package sanitary napkins, diapers, breast pads and other sanitary products; 2) Print the pattern on the front of the PE film, and then paste a layer of release paper on the self-adhesive area of ​​the sanitary products to be packaged (its release surface Coated with a layer of silicone anti-adhesive layer) for isolation and protection. It can be seen that these common packaging forms all use PE films as packaging carriers. However, PE films are difficult to degrade after being discarded and will pollute the environment. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/10D21H19/84D21H19/14D21H19/20D21H21/12B65D65/42
CPCD21H27/10D21H19/84D21H19/14D21H19/20D21H21/12B65D65/42
Inventor 曹继刚王冬梅许雍
Owner SHANGHAI ZIHUA FILM TECH CO LTD
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