Laminated draw-formed container having excellent shock resistance and process for producing the same
US5300335A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1992 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Nov 27, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated draw-formed container obtained by draw-forming a laminated material of a metal plate on which a resin film is laminated into a cup with bottom, wherein the resin film comprises a polyester composition which contains a polyethylene terephthalate component as a chief component and further contains a polyethylene isophthalate component and a polybutylene terephthalate component, the resin film having a density of from 1.32 to 1.39 g/cc at any part of the container and further having, on the upper part of the container, a trans ratio of ethylene glycol residue of from 0.1 to 1.5 as found by the ATR method, as well as a process for producing the container. The draw-formed container exhibits excellent shock resistance irrespective of the passage of time, and particularly dent resistance and barrier property against corrosive components, as well as intimate adhesion to the metal substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.