Ultra-thin polyester double-sided adhesive tape, glue thereof, and preparation method thereof

Abstract

The invention discloses an ultra-thin polyester double-sided adhesive tape comprising a polyester thin film layer and two glue layers formed by glue coated on front and back sides of the polyester thin film. The thickness of the polyester thin film is 0.001-0.0012mm. The thickness of the glue layer is 0.002mm. Therefore, the thickness of the double-sided adhesive tape is only 0.005mm, such that electronic product development trends of thin and light can be satisfied. The total thickness of adhesive is 0.004mm, such that the tape has ultra-low thermal resistance, and heat generated by electrical components can be conducted in time. Therefore, electrical component damage caused by long-term working under high temperature is avoided. Also, the invention discloses a formula for the glue used in the ultra-thin polyester double-sided adhesive tape. The glue comprises the raw materials of, by weight, 100 parts of acrylate prepolymer resin, 0.5-3 parts of a curing agent, and 100-200 parts of ethyl acetate. With the glue, a single side thickness is 0.002mm, and high adhesive performance can be provided.

Description

Technical field [0001] The invention relates to a double-sided adhesive tape and a preparation method thereof, in particular to an ultra-thin polyester double-sided adhesive tape for pasting electronic components and a preparation method thereof. Background technique [0002] With the rapid development of electronic consumer products, electronic consumer products such as smart phones and IPADs are gradually becoming thinner. As the electronic product industry stipulates that the adhesive force of the adhesive tape used to bond electronic components should be greater than 5N / 25mm, in order to meet this requirement , The thickness of the glue coated on both sides of the polyester layer of the traditional polyester double-sided tape is thicker, resulting in a thicker overall thickness of the tape. This is undoubtedly becoming the road of thinner and lighter electronic products. A stumbling block, therefore, traditional adhesive materials can no longer meet the requirements of the de...

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Problems solved by technology

[0002] With the rapid development of electronic consumer products, electronic consumer products such as smartphones and IPADs are gradually becoming thinner. Since the electronic product industry stipulates that the adhesive force of the adhesive tape used to bond electronic components should be greater than 5N / 25mm, in order to meet this requirement , the thickness of the glue coated on both sides of the polyester layer of the traditional polyester double-sided tape is thicker, resulting in a thicker overall thickness of the tape. stumbling block, therefore, traditional adhesive materials can no longer meet the requirements of the development of thin electronic products

[0003] Chinese patent application number 201210478467.8 and publication number CN102965044A provide a kind of "ultra-thin double-sided adhesive tape", which includes a 0.0019mm thick polyester film, and the polyester film is coated with 0.004mm thick acrylic glue on both sides, so the double-sided The total thickness of the tape reaches 0.01mm, which realizes the thinning of tape products and has good processing and operation performance, but there are still the following three shortcomings: (1) The total thickness of the tape is 0.01mm, which cannot meet the thinness of current consumer electronics products (2) The 0.008mm thick adhesive is easy to cause the heat generated by electrical components to form accumulation, which cannot be dissipated in time and cause damage to electrical components; (3) Upper and lower PET release film The release force is not designed in a differentiated manner, which may easily cause the separation failure of the release film and affect the pasting operation

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