Molding process for the fabrication of hollow shaped articles
US4216253A · kind A · utility
20Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1977 |
| Grant date | Aug 5, 1980 |
| Priority date | — |
| Expiry date | Dec 7, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Hollow shaped articles are extruded, advantageously continuously extruded, from molten thermoplastics by controlled cooling of the molten charge prior to entry into an extrusion die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.