Method for forming at least one fold line pattern in a rigid plastic material
US5268138A · kind A · utility
26Cited by
34References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 2, 1992 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Oct 2, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2024/003
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method for embossing a fold line onto a plastic sheet by first heating the plastic above its softening point and then embossing the material by passing it between a knurled flat roller and a cooperating embossing roller having a series of ridges suitable for embossing the fold line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.