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Recyclable PET (polyethylene glycol terephthalate) release material

A release material and release agent technology, applied in the direction of film/sheet release liner, etc., can solve the problems of environmental pollution, difficulty in recycling release materials, etc. hard to separate effect

Active Publication Date: 2019-05-14
GUANGZHOU THE BOND CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a recyclable PET release material for the existing release material that is difficult to recycle and cause serious environmental pollution.

Method used

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  • Recyclable PET (polyethylene glycol terephthalate) release material
  • Recyclable PET (polyethylene glycol terephthalate) release material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A recyclable PET release material, such as figure 1 As shown, from top to bottom are the release agent coating 1, the low-density material layer 2, the special adhesive coating 3, and the PET layer 4; the release agent coating uses silicone oil, and the low-density material layer adopts a density of 0.95g / cm 3 , LDPE material with a thickness of 16μm, the special adhesive coating adopts a washable adhesive with a density of 0.96g / cm3, and the PET layer adopts a density of 1.4g / cm3 3 , PET material with a thickness of 50 μm.

[0030] The release agent coating 1 has the function of anti-adhesive isolation.

[0031] The low-density material layer 2 has the effect of separating the release agent coating 1 from the PET layer;

[0032] The special adhesive coating 3 has high bonding strength, and it is easy to fall off from the surface of the PET layer when washing with alkaline water or warm water, and will not remain on the surface of the PET layer;

[0033] The PET la...

Embodiment 2

[0037] A recyclable PET release material, such as figure 1 As shown, from top to bottom are the release agent coating 1, the low-density material layer 2, the special adhesive coating 3, and the PET layer 4; the release agent coating uses silicone oil, and the low-density material layer adopts a density of 0.91g / cm 3 , PE material with a thickness of 10μm, and a special adhesive coating with a density of 0.9g / cm 3 Heat-shrinkable LDPE material, PET layer with a density of 1.2g / cm 3 , PET material with a thickness of 120 μm.

[0038] The release agent coating 1 has the function of anti-adhesive isolation.

[0039] The low-density material layer 2 has the effect of separating the release agent coating 1 from the PET layer;

[0040] The special adhesive coating 3 has high bonding strength, and it is easy to fall off from the surface of the PET layer when washing with alkaline water or warm water, and will not remain on the surface of the PET layer;

[0041] The PET layer 4 ...

Embodiment 3

[0043] A recyclable PET release material, such as figure 1 As shown, from top to bottom are the release agent coating 1, the low-density material layer 2, the special adhesive coating 3, and the PET layer 4; the release agent coating uses silicone oil, and the low-density material layer adopts a density of 0.99g / cm 3 , LLDPE material with a thickness of 12μm, and a special adhesive coating with a density of 0.9g / cm 3 Heat-shrinkable LLDPE layer, PET layer with a density of 1.1g / cm 3 , PET material with a thickness of 125 μm.

[0044] The release agent coating 1 has the function of anti-adhesive isolation.

[0045] The low-density material layer 2 has the effect of separating the release agent coating 1 from the PET layer;

[0046] The special adhesive coating 3 has high bonding strength, and it is easy to fall off from the surface of the PET layer when washing with alkaline water or warm water, and will not remain on the surface of the PET layer;

[0047] The PET layer 4 a...

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Abstract

The invention discloses a recyclable PET (polyethylene glycol terephthalate) release material. The recyclable PET release material is prepared by sequentially laminating a release agent coating, a lowdensity material layer, a special bonding coating and PET layer. The recyclable PET release material is characterized in that the recyclable PET release material with high bonding strength is not easy to fall off during use; the PET layer is easy to recover by stirring in warm water or alkaline water during the recycling process with chemical reagents not needed; the special bonding coating is separated from a PET film and floats on the surface of the water due to the fact that the low density material layer uses a lower density material; the PET with high density sinks to the bottom of the water; the PET film can be cleaned and completely recycled by water washing and density separation. The recyclable PET release material has the advantages of being easy to use, environmentally friendlyand non-toxic, and applicable to anti-sticking isolation of the bottom layer of adhesives with broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of release materials, and more specifically relates to a recyclable PET release material. Background technique [0002] According to the latest survey report on the 2015 global release paper market by Alexander Watson Associates (AWA), Asia consumed more than 1 / 3 of the world's release paper last year. In 2014, the global release paper consumption totaled 43,984 million square meters, of which the Asian market accounted for 37%, exceeding the 28% of the European and North American markets. Emerging economies in South America, Africa and the Middle East share the remaining 7%. The report also pointed out that pressure-sensitive adhesive label materials are still the high-quality terminal of paper and film release paper, with a growth rate of 4% in 2014, while the global pressure-sensitive tape market is thriving, with a growth rate of about 9.7%. This means that the consumption of release paper and release ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/40
Inventor 叶永前吴立霞
Owner GUANGZHOU THE BOND CHEM
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