Microwaveable micronodular surface including polypropylene, mica and talc
US6100512A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1997 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Aug 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1352
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disposable food contact compatible microwaveable containers having at least one micronodular surface are disclosed. These containers including plates, bowls, cups, trays, buckets, souffle dishes, and lids are prepared from polypropylene or propylene-ethylene copolymer or blends, talc and mica mixtures and pigment and are thermoformed into the shape of the desired article of manufacture exhibiting (a) a micronodular surface on at least one side; (b) a melting point of not less than about 250.degree. F.; these articles of manufacture being dimensionally stable and resistant to grease, sugar, and water at temperatures up to at least 250.degree. F. and being of sufficient toughness to resist cutting by serrated polystyrene flatware.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.