Forming hollow plastic product partially different in composition and its manufacturing apparatus
US5156796A · kind A · utility
12Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1990 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Jun 8, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2949/3006
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite parison generally cylindrical in shape and including two or more plastic materials different in characteristic is formed. Using this composite parison, a hollow plastic product of any desired shape having a locally different characteristic, such as in softness, heat-resistance or wear-resistance, can be manufactured with ease, for example, by conventional blow molding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.