Microfractured film and method for making
US12325177B2 · kind B2 · utility
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18References
19Claims
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Key dates
| Filing date | Mar 27, 2019 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Jul 22, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2423/106
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for imparting hand-tearability to an organic polymeric film by impinging a multiplicity of ceramic microblades on a major surface of the organic polymeric film. The resulting microfractured organic polymeric film can be used as a hand-tearable tape backing for a hand-tearable adhesive tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.