Flexible film composition for heat seals and container with same
US10137671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2013 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Jul 17, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2826
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure is directed to compositions and film structures suitable for heat seal production. The heat sealable flexible film structure includes: a layer (A) comprising a propylene-based plastomer or elastomer (“PBPE”) and a low density polyethylene; a layer (B), adjacent to layer (A), comprising at least 50 percent by weight of the layer (B) of an ethylene-based polymer; and an outermost layer (C) comprising a material having a melting point greater than 140° C. Weight percents are based on the total weight of the respective layer. The heat sealable flexible film structure is used to make a flexible container (10) having one or more heat seals (12). The heat seal (12) can be a frangible heat seal, a hard heat seal, or a combination thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.