Method of making ornamental plastic articles
US3975480A · kind A · utility
Inventor
Key dates
| Filing date | Oct 24, 1974 |
| Grant date | Aug 17, 1976 |
| Priority date | — |
| Expiry date | Oct 24, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB44C3/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An ornamental plastic article having a smooth rear exterior surface and a rough, randomly arranged layer of plastic particles or pellets forming the front outer surface is produced by placing a layer of plastic powder on one surface of a first mold form containing an outer wall having the configuration of the article, heating the powder until the powder becomes tacky in the form of a strip, placing this form on top of a mating second mold form having an outer wall containing various pockets of different colored plastic pellets of a compatible plastic material located in predetermined locations within the outer wall, rotating the two forms until the tacky powder form is on the bottom and the pockets of colored plastic pellets are on top, reversing the position of the two forms, and removing the first form which has a layer of plastic pellets affixed to the tacky layer in predetermined color arrangement corresponding to the pocket location on the second mold form, heating the pellets until they become soft, and then placing a heated third mold form containing the desired design in a wall configuration onto the heated sheet to add the design and color to the plastic pellets and then c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.