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US 12,060,505 B2Granted
Double coated tape
Assignee3M Innovative Properties Company
InventorsJingjing Ma, You-Hoon Kim, Christopher J. Rother, Gregory L. Bluem, Zhong Chen, Sarang V. Deodhar, Peter J. Klopp
Life of this patent
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Abstract
Provided are double-coated tapes that include, in the following order: a first pressure-sensitive adhesive layer; a first plastic skin layer; an elastic base layer; a second plastic skin layer; and a second pressure-sensitive adhesive layer. The provided double-coated adhesive tapes can provide a combination of high bond strength, reworkability, and high impact and shock resistance, and can be easily converted using a die cutting process.
Claims19
A double-coated tape comprising, in the following order:
- a first pressure-sensitive adhesive layer;
- a first plastic skin layer comprising carbon black and an ethylene-vinyl acetate copolymer, and having an average thickness ranging from 10 micrometers to 50 micrometers;
- an elastic base layer having an average thickness ranging from 20 micrometers to about 130 micrometers;
- wherein the elastic base layer comprises an elastomer selected from the group consisting of styrenic block copolymers, olefinic block copolymers, thermoplastic polyolefins, natural rubber, styrene butadiene rubber, ethylene propylene diene monomer, polyisobutylene, thermoplastic polyurethanes, and blends and copolymers thereof;
- a second plastic skin layer comprising carbon black and an ethylene-vinyl acetate copolymer;
- and
- a second pressure-sensitive adhesive layer, wherein the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer are outermost layers on either side of the double-coated tape;
- wherein each of the first and second plastic skin layers has an average thickness of at least 10 percent to at most 50 percent of the average thickness of the elastic base layer;
- wherein the double-coated tape:
- has an overall thickness ranging from 50 micrometers to 400 micrometers;
- and
- withstands at least 15 drops according to the procedure Tensile Drop Test-Room Temperature Conditioning described in the present Specification.
9 more elements
Dependencies are inferred from the claim text.