ABS/Acrylic lamination process
US5069851A · kind A · utility
13Cited by
19References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1990 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Jul 9, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2355/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Continuous lamination of ABS and polymethylmethacrylate (PMMA) is achieved employing a continuous sheet or reel of PMMA 0.1 inch to 0.250 inch thick optionally preheated on one side; a web of ABS is extruded at about 450.degree.-550.degree. F. from pellets onto the PMMA at the nip of a roll stack. In the roll stack, the two laminated layers are compressed and gradually cooled. The laminate displays properties of both ABS and acrylic. It has excellent thermoforming properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.