Method for manufacturing shaped articles by injection-blow molding
US3944643A · kind A · utility
47Cited by
4References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 9, 1973 |
| Grant date | Mar 16, 1976 |
| Priority date | — |
| Expiry date | Aug 9, 1993 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2949/3032
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing shaped articles by injection-blow molding. A thermoplastic material is first formed into a bottomed parison by injection-molding said material onto the surface of an injection molding core. The bottomed parison formed on the surface of the core is cooled to a temperature at which it is easily removed from the core, and is removed therefrom. The parison is heated again to a predetermined temperature and the reheated parison is transferred to a blow molding mold, wherein the parison is blow-molded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.