Injection extrusion blow molding process for making multiple compartment plastic containers
US5882574A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Oct 14, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The multiple compartment plastic container comprises an injection molded finish having a circumferential wall and at least one diametrical wall dividing the finish into at least two passages and an extruded and blow molded body integrally attached to said finish and providing at least two compartments communicating with said passages. The container is made by injection molding a plastic finish having a circumferential wall and at least one diametrical wall dividing the finish in two or more passages, extruding a plastic tube with wall of the tube integral with circumferential wall of the finish and the diametrical wall, closing a blow mold about the tube, and blowing air into the tube through the finish to the confines of the blow mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.