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Water sensitivity pressure-sensitive adhesive for protection paper

A technology for protecting paper and pressure-sensitive adhesives, applied in the direction of adhesives, etc., can solve the problems of easy residual glue and low bonding strength, and achieve the effect of achieving initial adhesion, good balance and improving bonding strength.

Active Publication Date: 2012-12-12
无锡达美新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used water-sensitive pressure-sensitive adhesive is a single polyvinyl acetal, which has disadvantages such as low bonding strength after drying, and easy residual glue after long-term lamination.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 25g of polyvinyl formal, 60g of polyvinyl furfural, 2g of multifunctional water-based isocyanate, 10g of rosin resin and 3g of HEUR. The above-mentioned components are mixed and stirred evenly at room temperature to obtain the water-sensitive pressure-sensitive adhesive solution of the present invention.

[0019] Apply the prepared water-sensitive pressure-sensitive adhesive solution evenly on the kraft paper, and the glue amount is about 15g / m 2 (dry glue), dry at 80°C for 10 minutes, and test the performance and technical indicators of the pressure-sensitive adhesive according to the following test methods:

[0020] Initial tack: according to GB 4852-1984 rolling ball slope stop method (DOW method), immediately use the pressure-sensitive tape initial tack tester to test after the protective paper is wet;

[0021] 180°peel strength: stick the protective paper on the mirror steel plate after wet with water, dry it at 80°C for 30 minutes, and use a desktop tensile...

Embodiment 2

[0029] Weigh 20g of polyvinyl acetal, 63g of polyvinyl butyral, 3g of multifunctional water-based isocyanate, 10g of rosin resin and 4g of HASE. The above-mentioned components are mixed and stirred evenly at room temperature to obtain the water-sensitive pressure-sensitive adhesive solution of the present invention.

[0030] Apply the prepared water-sensitive pressure-sensitive adhesive solution evenly on the kraft paper, and the glue amount is about 15g / m 2 (dried glue), dried at 80° C. for 10 minutes, and tested various performance technical indicators of the pressure-sensitive adhesive according to the test method described in Example 1. The test results are as follows:

[0031] Initial viscosity: No. 5 ball;

[0032] 180°peel strength: 33N / m;

[0033] Stickiness: >72h.

[0034] The protective paper prepared by using the water-sensitive pressure-sensitive adhesive prepared in this example was pasted on the surface of the PMMA substrate, and when the protective paper was...

Embodiment 3

[0036] Weigh 23g of polyvinyl isobutyral, 68g of polyvinyl furfural, 1g of polyfunctional water-based isocyanate, 6g of terpene resin and 2g of HEUR. The above-mentioned components are mixed and stirred evenly at room temperature to obtain the water-sensitive pressure-sensitive adhesive solution of the present invention.

[0037] Apply the prepared water-sensitive pressure-sensitive adhesive solution evenly on the kraft paper, and the glue amount is about 15g / m 2 (dried glue), dried at 80° C. for 10 minutes, and tested various performance technical indicators of the pressure-sensitive adhesive according to the test method described in Example 1. The test results are as follows:

[0038] Initial viscosity: No. 7 ball;

[0039] 180°peel strength: 49N / m;

[0040] Stickiness: >72h.

[0041] The protective paper prepared by using the water-sensitive pressure-sensitive adhesive prepared in this example was pasted on the surface of the PMMA substrate, and when the protective pape...

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Abstract

The invention discloses a water sensitivity pressure-sensitive adhesive for protection paper, containing the following components by weight percent: 80-93% of polyvinyl acetal, 0.5-5% of solidifying agent, 5-15% of thickening agent and 1-5% of viscosity regulator. The water sensitivity pressure-sensitive adhesive disclosed by the invention can realize favourable balance of initial adhesion, peeling strength and cohesion and is applied to protection paper, so that the protection paper is easy to paste and tear, can be clearly peeled even being pasted on base material for a long time and no pressure-sensitive adhesive residual is remained.

Description

technical field [0001] The invention relates to a water-sensitive pressure-sensitive adhesive, more specifically, the invention relates to a water-sensitive pressure-sensitive adhesive for protective paper. Background technique [0002] Protective paper is a surface protection and packaging material used to protect the surface of goods. It is pasted on the surface of PMMA boards, ABS boards, PVC smooth boards, polyester furniture boards, melamine boards, etc. , secondary processing, storage and use to protect the surface, to prevent the product from being polluted, scratched and slow down the oxidation of the product surface. The application of protective paper can not only improve the appearance quality of products and facilitate material processing, but also improve the utilization rate of materials and reduce production costs. [0003] Protective paper is made by coating pressure-sensitive adhesive on paper base material, and water-sensitive protective paper is one of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J129/14C09J9/00
Inventor 李国荣
Owner 无锡达美新材料有限公司