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Method for removing plastic from paper surface protective film and paper with plastic-removed protective film

A surface protective film and protective film technology, applied in the field of paper surface protective film de-plasticizing, lamination process, and paper with de-plasticizing protective film, can solve the problem of difficult secondary use of plastic films, poor friction resistance, wet stickiness Risks and other issues to achieve the effect of increasing the reuse rate and reducing costs

Pending Publication Date: 2021-11-19
深圳劲嘉新型智能包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] When the first solution is produced using a water-based coating process, the disadvantages of coating once are: uneven leveling, poor friction resistance, weak explosion resistance, weak moisture resistance, and risk of wet sticking
The second coating requires additional investment in double oil seat equipment, and the fixed assets are expensive; the UV coating process has weak explosion-proof performance, uneven leveling, and higher costs than traditional coatings.
The UV matte oil is immature, the gloss is far from the traditional matte film, and the leveling stability is poor
[0011] The disadvantages of the second solution are: the raw materials must be processed, and the production is produced by the traditional laminating machine coating process, the efficiency is generally not high, the peeled plastic film is difficult to reuse, the potential cost is high, and the transfer process uses water-based The glue coating process will generate VOCs and requires a certain modification fee

Method used

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  • Method for removing plastic from paper surface protective film and paper with plastic-removed protective film
  • Method for removing plastic from paper surface protective film and paper with plastic-removed protective film
  • Method for removing plastic from paper surface protective film and paper with plastic-removed protective film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like figure 1 Shown, a kind of paper surface protective film deplasticizing method comprises the following steps:

[0042] 1) Prepare a dielectric material film and apply a release resin coating on the plastic film. The purpose of this step is to facilitate the reuse of the plastic film. Among them, the plastic film is processed, on the one hand, it improves the plastic film. The flexibility in the process is not limited by the matte surface. On the other hand, the plastic film is processed to protect the performance of the plastic film and increase the number of times the plastic film is reused.

[0043] 2) Use a smooth or textured hard roller to heat and emboss the surface of the release resin coating for transfer printing to form a smooth or textured dielectric material film, and roll it up for later use. In this step, steel The pattern on the surface of the roller can be designed as required, it can be a smooth surface, a matte surface, a surface with other texture...

Embodiment 2

[0056] like figure 2 As shown, a kind of paper with plastic-removing protective film is a finished product manufactured by the method in Example 1, which includes paper 1 with printing color, water-based coating 2 coated on the paper surface, coating The UV resin layer 3 on the water-based coating surface and the release resin coating 4 combined with the UV resin layer, the inner surface of the release resin coating 4 and the contact surface of the UV resin layer 3 are set to a smooth surface Or matte or textured surface.

[0057] The paper with protective film can be recycled together with the ink, water-based coating, and UV resin layer to make recycled paper. It can also be naturally disintegrated in the natural environment together with the paper, and it can even be hydrolyzed into Small molecule, without plastic components, and has a good effect of replacing the film, and has excellent promotion and application value.

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Abstract

The invention provides a method for removing plastic from a paper surface protective film. The method comprises the steps of 1) coating a plastic film with a release resin coating to form a release film; (2) carrying out heating and imprinting on the surface of the release resin coating by using a hard roller, and then rolling for later use; (3) printing colors on the paper, coating a special water-based coating on the surface of the paper, and sufficiently placing and drying; 5) coating a UV resin layer on the surface of the printed water-based coating; 6) stamping one side of the release resin coating of the prepared dielectric material on the surface of the UV resin layer, and then drying and curing by using a UV lamp; and 7) stripping the dielectric material film, finishing transfer printing, and rolling the dielectric material film for later use. The dielectric material film in the method can be repeatedly used, so that the cost is reduced; the UV resin layer is high in curing speed, so that the production efficiency can be greatly improved; and a smooth or matt protective film coating without plastic can be formed, and has excellent uniformity, smoothness, wear resistance, scratch resistance, explosion resistance and alcohol solvent resistance.

Description

technical field [0001] The invention relates to a film-coating process in the fields of paper printing and packaging, in particular to a method for removing plastic from a paper surface protective film and paper with a plastic-free protective film. Background technique [0002] Traditional packaging or printed matter lamination is a main process of post-press processing, which is divided into pre-coating type and instant coating type. It is to bond the plastic film coated with adhesive with the paper printed matter after heating and pressing. , forming a paper-plastic product. [0003] The coated printed matter has a smoother, brighter or matte texture due to the addition of a layer of bright or matte plastic film on the surface, which improves the fastness of the printed matter and prolongs the service life of the printed matter. At the same time, the plastic film acts as a moisture-proof , waterproof, anti-fouling, wear-resistant, folding-resistant, burst-resistant, chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H27/26D21H19/82D21H19/66B44C1/165B44C1/17B44C1/24B44C1/20
CPCD21H27/10D21H27/26D21H19/82D21H19/66B44C1/165B44C1/1712B44C1/24B44C1/20
Inventor 胡春华
Owner 深圳劲嘉新型智能包装有限公司