Laminate structure for biocompatible barrier packaging
US11254108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2018 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Oct 4, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W90/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Biocompatible flexible laminate structure comprising an alternating stack of layers from polymers A and B or polymer blends AC and BD having the sequence -A-[B-A-]n- or AC-[BD-AC-]n with n from 4 to 36, wherein the layer thickness of layers A or AC and layers B or BD is less than 3 μm, wherein A and B are thermoplastic polymers and C and D are thermoplastic elastomers, at least part of the monomeric building blocks of polymer A, B or A and B are from renewable sources 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.