Multilayer parison extrusion molding machine for blow molding
US4047868A · kind A · utility
75Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1977 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Mar 9, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/335
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multilayer parison extrusion molding machine for blow molding which is characterized in that a main extruder and one or more sub-extruders are radially attached to special diehead and said die head comprises a core holder having a core pin at the lower end; a cylindrical mandrel enclosing said core holder; a plurality of sleeves surrounding said mandrel; housings surrounding said sleeves respectively; one or more pressure rings controlling the space in molten resin passages; pressure ring adjusting screws; an extrusion die; and a die adjusting screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.