Multi-layer polyisophthalate and polyterephthalate articles and process therefor
US4604257A · kind A · utility
21Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1984 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Sep 17, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2067/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multi-layer polyester article, and particularly a beverage bottle having good oxygen and carbon dioxide permeability resistance. At least one layer of the article is made from polyisophthalate and copolymers thereof. The multi-layer articles find particular use as packaging materials, films, and molded containers such as for alcoholic beverages. Various colorants can be added to either one or more of the layers to impart a desired color to the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.