Foam adhesive tape

A tape and foam technology, applied in the direction of adhesives, film/sheet adhesives, coatings, etc., can solve the problems of affecting service life, complicated production process, and affecting the use of adhesive layers, so as to prevent falling off and degumming , the effect of simple structure

CN112126367AInactive Publication Date: 2020-12-25HENGSHAN JIACHENG NEW MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-12-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a foam adhesive tape which comprises an upper base material layer and a lower base material layer, the base materials are connected in an adhesive mode, the upper base materiallayer is a PET film, the upper surface of the upper base material layer is coated with polyethylene emulsion to form a foam layer in a foaming mode, and the bottom of the lower base material layer isconnected with a release film through an adhesive layer. According to the scheme, the adhesive tape is simple in structure and convenient to use, the problem that the bonding strength of the adhesivelayer and the foam layer is insufficient is effectively solved by adopting the double-layer base layer material, the adhesive layer can be better and tightly bonded with the lower-layer base layer material, degumming is avoided, the service life of the adhesive tape is prolonged, meanwhile, bubbles in the adhesive layer can be removed under the action of the lower-layer base material, so that theadhesive layer and a clutch layer are further prevented from falling off, the adhesive tape is convenient to wind, and the processing and production efficiency of the adhesive tape is improved.
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Description

technical field

[0001] The invention relates to the technical field of adhesive tapes, in particular to a foam adhesive tape. Background technique

[0002] Touch display modules such as mobile phones, notebooks and TVs are usually equipped with buffer tapes to support the screen group. The buffering effect of the tape can reduce the water-like ripples that appear when the screen group is pressed.

[0003] The buffer tape used in the current mobile phone touch display module is usually made of foam coated with PET single-sided tape. Specifically, corona treatment is first performed on the foam to improve the surface energy of the foam, and then glue is applied, and then it is combined with Laminated with PET single-sided tape. It can be seen from the above preparation process that the production process of the adhesive tape is relatively complicated and the cost is high, but the use process will affect the use of the adhesive layer, and it is prone to degumming, which affect...

Examples

Embodiment Construction

[0020] As shown in the attached figure: a kind of foam tape, including upper and lower base materials, the base materials are connected by glue, the upper base material is PET film, the foam layer is formed by coating polyethylene emulsion on the upper surface, and the lower layer The bottom of the substrate is connected with a release film through an adhesive layer.

[0021] During the use of this scheme, the connection effect between the adhesive layer and the lower layer can be improved, the bonding ability between the adhesive layer and the lower layer can be improved, and the connection between the adhesive layer and the foam layer can be avoided, which will affect its connection strength. The combination between the adhesive layers facilitates the expulsion of the air bubbles between the release film and the adhesive layer, facilitates the winding effect of the tape, and prevents the air bubbles from affecting the stacking of the tape.

[0022] In an embodiment, the lowe...