Method for the production of a thermoplastic plate comprising at least one smooth edge, device therefore, and edge machining system
US8377357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Dec 23, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0073
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A thermoplastic board (20) comprising at least one smooth side edge (21) is produced by means of extrusion. The side edge of a synthetic web is heated at least to its melting temperature following calibration while the peripheral surface zones are kept at a temperature below the softening temperature by cooling. A smoothing device (10′) for a side edge of the thermoplastic board encompasses a guiding groove (14′) that is provided with at least one heating means (15′), located within the face (11′), and at least one respective cooling means (16′, 17′) located within the side surfaces (12′, 13′) that face each other. A cutting edge (21, 24) of a synthetic board (20) that can be guided inside the guiding groove (14′) rests against the face (11′) while the peripheral surface zones (22, 23) thereof lean against the side surfaces (12′, 13′).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.