Reinforcement composition for rotational molding
US6852788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2001 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Oct 21, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C73/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mixture of a carrier and binder component and polymer powders is provided as a molding composition for sealing rotational molds or for reinforcing selected areas of rotationally molded parts. The carrier and binder component can be very low density polyethylene, petroleum jelly, hydrocarbon wax, hydrocarbon tackifier, or mixtures thereof, and the polymer powders are thermoplastics having a low melt index. The molding composition is applied to selected areas of the rotational mold, such as to the mating flanges of the mold halves to seal the parting line of the mold, or to areas within the mold where it is desired to have reinforced regions of greater wall thickness, such as ribs or bosses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.