Thermoplastic films and products with diffusion-based compartmentalized additive components
US11965071B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2021 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Feb 17, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2300/22
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present disclosure relates to thermoplastic films and products formed therefrom that include additive components effectively compartmentalized based on diffusion characteristics of the additive components. For example, first and second additive components are localized on a thermoplastic film in a manner that as the additive components diffuse, they minimize or avoid interaction. Specifically, the thermoplastic film is folded over itself to create an air gap that causes the additive components to desorb, diffuse into the air gap, and then absorb into the film at a position across the air gap rather than diffusing substantially laterally across the thermoplastic film. By ensuring that the additive components diffuse up and down rather than laterally and by laterally offsetting the additive components, one or more implementations effectively compartmentalize the antagonistic components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.