Method and apparatus for blow molding plastic
US4028034A · kind A · utility
7Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1975 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Feb 14, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7132
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention disclosed is for a method and apparatus for blow molding foam walled plastic using a quadrisectional mold. A parison of foamed plastic may be blow molded to assume the contour of the closed mold, after which the molded shape is severed into two portions and ejected. Desirably, cellular plastic is blow molded to form hot drink cups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.