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Easy-to-remove double-sided UV protective adhesive tape and preparation method of same

A protective tape, double-sided technology, applied in the direction of adhesives, film/sheet adhesives, adhesive types, etc. Problems such as difficult control of adhesive tape surface

Inactive Publication Date: 2018-10-02
DONGGUAN AOZON ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the currently commonly used double-sided tapes is the use of pressure-sensitive adhesive solutions, but if the adhesive layer has a high viscosity setting, it is often difficult to remove after processing; if the viscosity setting is too small, the metal sheet or glass sheet will be damaged during processing. The material is easy to fall; and the existing double-sided tape has the same viscosity on both sides, which cannot guarantee that the tape will be separated from the metal sheet and glass sheet in sequence
The other is to adopt the double-sided foam tape scheme, and set the foaming temperature of the foaming agent in the two-sided adhesive layer to be different to realize the separation of the tape from the metal sheet and the glass sheet in sequence under different temperature conditions; but this scheme The foaming agent used generally has a small temperature range, and it is difficult to achieve foaming on one side without foaming on the other side through precise temperature control. Moreover, the surface viscosity of the adhesive tape with foaming agent is difficult to control and the production process is difficult.

Method used

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  • Easy-to-remove double-sided UV protective adhesive tape and preparation method of same
  • Easy-to-remove double-sided UV protective adhesive tape and preparation method of same
  • Easy-to-remove double-sided UV protective adhesive tape and preparation method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] An easy-to-remove double-sided UV protective tape, comprising an upper release film, a first adhesive layer, a substrate film, a second adhesive layer and a lower release film arranged in sequence, and the substrate film is PET heat-shrinkable A film, the first adhesive layer is a pressure-sensitive adhesive layer, and the second adhesive layer is a UV adhesive-reducing layer.

[0040] The 180° peel force of the UV adhesive layer before UV irradiation is 0.5N / 25mm-0.8N / 25mm, and the 180° peel force of the UV adhesive layer after UV irradiation is 0.02-0.0.05N / 25mm; the 180° peel force of the pressure-sensitive adhesive layer is: 0.2N / 25mm-0.5N / 25mm.

[0041] The release force of the upper release film is less than the release force of the lower release film; the release force of the upper release film is 5-6gf / 25mm, and the release force of the lower release film is 10- 12gf / 25mm.

[0042] Preferably, the thickness of the PET heat-shrinkable film is 20um, and the hea...

Embodiment 2

[0058] An easy-to-remove double-sided UV protective tape, comprising an upper release film, a first adhesive layer, a substrate film, a second adhesive layer and a lower release film arranged in sequence, and the substrate film is PET heat-shrinkable A film, the first adhesive layer is a pressure-sensitive adhesive layer, and the second adhesive layer is a UV adhesive-reducing layer.

[0059] The 180° peel force of the UV adhesive layer before UV irradiation is 0.8N / 25mm-1.5N / 25mm, and the 180° peel force of the UV adhesive layer after UV irradiation is 0.05-0.1N / 25mm ; The 180° peel force of the pressure-sensitive adhesive layer is: 0.5N / 25mm-1N / 25mm.

[0060] The release force of the upper release film is less than the release force of the lower release film; the release force of the upper release film is 8-9gf / 25mm, and the release force of the lower release film is 25- 27gf / 25mm.

[0061] The thickness of the PET heat-shrinkable film is 40um, and the heat-shrinkage tempe...

Embodiment 3

[0077] An easy-to-remove double-sided UV protective tape, comprising an upper release film, a first adhesive layer, a substrate film, a second adhesive layer and a lower release film arranged in sequence, and the substrate film is PET heat-shrinkable A film, the first adhesive layer is a pressure-sensitive adhesive layer, and the second adhesive layer is a UV adhesive-reducing layer.

[0078] The 180° peeling force of the UV adhesive layer before UV irradiation is 2N / 25mm-2.5N / 25mm, and the 180° peeling force of the UV adhesive layer after UV irradiation is 0.1-0.15N / 25mm; The 180° peel force of the pressure-sensitive adhesive layer is: 1N / 25mm-2N / 25mm.

[0079] The release force of the upper release film is less than the release force of the lower release film; the release force of the upper release film is 13-14gf / 25mm, and the release force of the lower release film is 35- 37gf / 25mm.

[0080] The thickness of the PET heat-shrinkable film is 60um, and the heat-shrinkage te...

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Abstract

The invention relates to the technical field of double-sided adhesive tapes and particularly relates to an easy-to-remove double-sided UV protective adhesive tape and a preparation method of same. Theadhesive tape includes, successively, an upper release film, a first adhesive layer, a base material film, a second adhesive layer and a second release film, wherein the base material film is a PET heat shrinkage film; the first adhesive layer is a pressure-sensitive glue layer and the second adhesive layer is a UV bonding-reduced glue layer. One side of the double-sided UV protective adhesive tape is the UV bonding-reduced glue layer while the other side is the pressure-sensitive glue layer, so that adhesion performances of the two sides are different; during use, the side with the UV bonding-reduced glue layer is attached to a metal sheet material while the side with the pressure-sensitive glue layer is attached to a glass sheet material; in addition, the base material film is preparedwith the heat shrinkage film, so that the adhesive tape is separated from the metal sheet material and the glass sheet material sequentially. The preparation method is simple and is free of strict conditions and equipment, is very suitable for large-scale mass production and has great economic benefit.

Description

technical field [0001] The invention relates to the technical field of double-sided adhesive tapes, in particular to an easy-to-remove double-sided UV protective adhesive tape and a preparation method thereof. Background technique [0002] Ultra-thin metal sheets are widely used in electronic products, precision machinery, display screens, architectural decoration, etc. However, during the processing of ultra-thin metal sheets, since the metal sheets are large and thin, if they are directly in contact with the processing operation platform, it is easy to cause irreparable damage to the surface of the metal sheet or even the entire metal sheet. Therefore, before processing, it is often necessary to adhere a protective layer on the back of the metal sheet processing surface, so that it can protect the metal sheet from damage during processing, and the protective layer can be easily removed after processing. . [0003] In addition, in order to ensure the smoothness of the pro...

Claims

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Application Information

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IPC IPC(8): C09J7/25C09J7/38C09J133/14C09J175/08
CPCC09J7/255C09J7/385C09J133/14C09J2423/105C09J2467/005C09J2467/006C09J2301/124C09J2301/302C08L75/08
Inventor 袁进芳薛萌李慧华阮镜棠金哲浩王宜金
Owner DONGGUAN AOZON ELECTRONICS MATERIAL
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