Multicolored unitary thermoformed article
US4555423A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1984 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Jun 25, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/722
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multicolored thermoformed article is prepared by initially forming thermoplastic resin of a first color into a contoured design configuration. This preformed element is then placed in a thermoforming mold having an insert-receiving portion of complimentary contour and additional contours outwardly of the insert-receiving portion. Thermoplastic sheeting of a second color is then thermoformed against the surfaces of the mold and of the insert to produce the composite article in which the adjacent surface of the insert is thoroughly bonded to the sheeting of the second coloration. The process may be utilized to produce articles in which more than one preformed element is incorporated, and such multiple preformed elements may be of the same or distinct configurations and of the same or distinct colorations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.