Delamination-resistant multilayer container, preform, article and method of manufacture
US7491359B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2003 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | May 18, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31565
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic container, preform or article includes a multilayer wall having at least one layer of matrix resin, at least one layer of barrier resin, and an adhesion-promoting material blended with the barrier resin and/or the matrix resin to promote bonding between the barrier and matrix layers. The matrix resin preferably is an ester-containing resin, most preferably a polyester such as PET. The adhesion-promoting material includes an amine polymer, preferably an imine polymer having a plurality of available primary, secondary or tertiary amine groups. An alkylene imine polymer is preferred, particularly a polyethyleneimine polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.