Process for the manufacturing of an article of plastic material
US6444149B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1999 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Sep 9, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2439/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Article made of thermoplastic material, which article is rigid and at least partly heat insulating. The article includes a laminate in at least parts of the article. The laminate includes a first and a second layer of solid thermoplastic material (A) and an intermediate layer of expanded thermoplastic material (B) with an average density of 50-800 kg/m3. The thermoplastic materials (A) and (B) are the same or compatible materials. The article is manufactured according to a process comprising the steps a) forming of a solid outer layer, b) manufacturing of an intermediate expanded layer and c) the appendage of functional parts such as reinforcing profiles, guiding profiles, stacking profiles, hinge parts, pockets, label holders, profiles or holes for automatic handling, locking devices or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.