Laminate structure for barrier packaging
US11654660B2 · kind B2 · utility
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17References
19Claims
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Key dates
| Filing date | Oct 4, 2018 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Oct 4, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2535/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Laminate structure comprising an alternating stack of layers from polymer blends AC and BD having the sequence -AC-[BD-AC-]n with n from 4 to 36, wherein the layer thickness of layers AC and layers BD is less than 3 μm, wherein A and B are thermoplastic polymers and C and D are thermoplastic elastomers, wherein the thermoplastic polymer B has functional barrier properties, wherein the amount of the thermoplastic elastomers C and D in the polymer blends AC and BD is each from 3 to 45 wt.-%, and polymer B and elastomer D are essentially incompatible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.