Multilayer adhesive tape
US11091674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2018 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Jun 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A multilayer adhesive tape exhibiting high step coverage and having both high reworkability and excellent punchability is provided. The multilayer adhesive tape sequentially includes: a first outer adhesive layer; an intermediate adhesive layer; and a second outer adhesive layer, in which a glass transition temperature of the intermediate adhesive layer is −40° C. or more and 0° C. or less, a glass transition temperature of each of the first outer adhesive layer and the second outer adhesive layer is −60° C. or more and −20° C. or less, and a difference in glass transition temperature between each of the first outer adhesive layer and the second outer adhesive layer and the intermediate adhesive layer is 5° C. or more and 25° C. or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.