Foam adhesive tape for electronic product camera and preparation method thereof

Abstract

The invention discloses a foam adhesive tape for an electronic product camera and a preparation method thereof. The foam adhesive tape comprises a base material layer, adhesive layers coated on two sides of the base material layer and a release material layer covering one of the adhesive layers. The adhesive layer comprises the following components in parts by weight: 63-83% of acrylic copolymer, 15-35% of tackifying resin, 1-2% of a cross-linking agent and a solvent. The foam adhesive tape is soft, good in fitness, good in initial adhesion of the adhesive layer and good in wettability, so that the initial adhesion of the foam adhesive tape is better than that of a traditional adhesive tape, when a camera module and a protective lens are attached, the foam adhesive tape can rapidly fill gaps, the surface of the lens is fully wetted, white spots are avoided, and the module attaching effect is better. In addition, the foam adhesive tape is high in bonding strength, good in anti-seismic effect and excellent in waterproofness.

Description

technical field [0001] The invention relates to the field of adhesive tapes, in particular to a foam adhesive tape used for a camera of an electronic product, and a preparation method of the foam adhesive tape. Background technique [0002] The bonding of electronic products, such as mobile phones, tablets and laptops, is usually achieved by using high-performance double-sided tapes. This high-performance double-sided tape needs to have high bonding strength, excellent impact resistance, excellent Excellent resistance to surface tension and excellent push-out force. [0003] As consumers have higher and higher requirements for electronic products, the performance requirements for camera adhesive tape are also getting higher and higher. The tape not only plays a role in protecting the camera, but also is one of the indispensable auxiliary parts to improve the photo effect. one. In addition, many electronic products now need to be waterproof, so they can be used in wet or wa...

AI Technical Summary

Problems solved by technology

However, the foam strength in the traditional foam tape is high, but the foam is relatively hard, so the compliance is relatively poor; the adhesive of the tape has high bonding strength, but the initial tack is poor, and the wettability is poor, so the tape is difficult to fully adhere to the surface of the object. Infiltration, so that the foam tape is pasted behind the lens of the camera, leaving bubbles and voids on the surface of the lens, resulting in white spots

White spots will cause the tape to not fit the lens completely, poor air tightness and waterproof, which cannot meet the performance requirements of the current tape

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