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PVC protective film

A protective film and base film technology, applied in protective clothing, protective equipment, clothing, etc., can solve the problems of reduced viscosity, protective film adhesive layer peeling, ghosting, etc., to prevent and fall off, reduce peeling, and reduce residual glue Effect

Inactive Publication Date: 2015-09-30
POLI FILM PROTECTIVE FILM SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing PVC protective film, when an adhesive layer is added to the PVC protective film to adhere to the board, some additives such as plasticizers are easy to migrate from the inside of the PVC protective film to the adhesive layer, thereby causing the adhesive layer of the protective film to fall off, making the reduced viscosity
If the PVC protective film is rolled up, the plasticizer will precipitate from the back of the PVC protective film to the adhesive layer, which will cause the adhesive layer to fall off. If such a PVC protective film is directly attached to the board, it is easy to produce residual glue and ghost images. and other defects

Method used

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Embodiment Construction

[0021] The following drawings further illustrate the technical solution of the present invention through specific implementation methods.

[0022] A PVC protective film, the PVC protective film includes a pressure-sensitive adhesive layer 1, a PVDC first isolation layer 2, a PVC base film layer 3, a PVDC second isolation layer 4, and a release agent layer 5 from top to bottom. Layer 1 is directly coated on the surface of the PVDC first isolation layer 2; wherein, the PVC base film layer 3 is a PVC base film layer added with a plasticizer, and the pressure-sensitive adhesive layer 1 is an auxiliary agent added with an absorbable plasticizer The thickness of the pressure-sensitive adhesive layer 1 is 2-6 μm, the thickness of the PVDC first isolation layer 2 and the PVDC second isolation layer 4 are respectively 2-5 μm, and the thickness of the PVC base film layer 3 is 20-60 μm , the thickness of the release agent layer 5 is 0.1-0.5 μm. The PVDC first isolation layer 2 is arrang...

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Abstract

The invention discloses a PVC protective film. The PVC protective film sequentially comprises a pressure-sensitive adhesive layer, a first PVDC isolating layer, a PVC base membrane layer, a second PVDC isolating layer and a parting agent layer from top to bottom. The pressure-sensitive adhesive layer is directly coated on the surface of the first PVDC isolating layer, the PVC base membrane layer is added with plasticizer, and the pressure-sensitive adhesive layer is added with an auxiliary capable of absorbing the plasticizer. The first PVDC isolating layer is arranged between the pressure-sensitive adhesive layer and the PVC base membrane layer, and the first PVDC isolating layer can prevent the plasticizer from being transferred to the pressure-sensitive adhesive layer from the PVC base membrane layer. The second PVDC isolating layer is arranged between the PVC base membrane layer and the parting agent layer, the second PVDC isolating layer can prevent the plasticizer from penetrating through the parting agent layer from the PVC base membrane layer to be transferred to the coiled pressure-sensitive adhesive layer, the parting agent layer can prevent the coated layer of the coiled protective film from being reversely bonded to the uncoated layer, and thus the product can be uncoiled. The PVC protective film can be uncoiled conveniently, disengaging of the pressure-sensitive adhesive layer can be effectively stopped and reduced, and when the PVC protective film is directly bonded to a plate, the occurrence probability of the defects such as adhesive residues and ghost images on the plate can be effectively lowered.

Description

technical field [0001] The invention belongs to the field of protective films, in particular to a PVC protective film. Background technique [0002] PVC protective film is a kind of plastic protective film, which is calendered by polyvinyl chloride and plasticizer, heat stabilizer, modifier, ultraviolet absorber, etc. It is softer and has better mechanical properties than PE film. PVC protective film can be made into a protective film with better performance requirements than PE film according to different formulations, and is used to protect materials with special requirements. [0003] In the existing PVC protective film, when an adhesive layer is added to the PVC protective film to adhere to the board, some additives such as plasticizers are easy to migrate from the inside of the PVC protective film to the adhesive layer, thereby causing the adhesive layer of the protective film to fall off, making the Viscosity is reduced. If the PVC protective film is rolled up, the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/22B32B27/30B32B27/34
CPCB32B27/08B32B27/22B32B27/304B32B27/34B32B2255/10B32B2571/00
Inventor 罗光宇
Owner POLI FILM PROTECTIVE FILM SUZHOU
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