Continuous mold thermo forming
US3982868A · kind A · utility
10Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1975 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Oct 14, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/201
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for the continuous forming of molded plastic sheet from granular thermoplastic materials directly from granular thermoplastic material by plasticizing the granular material through a blender and an extruder, thence passing such material through a pair of roller dies to form a sheet of material that is fed directly to a continuously moving conveyor belt where the sheet is vacuum formed, thence trimmed and cut to size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.