Paper cup and method of forming the same
US11530070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2020 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Oct 20, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D3/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A paper cup and a method of forming the same. The paper cup may include a sidewall and a floor portion that collectively define a cavity. In one aspect, the paper cup may include a rim that is coated with a rigid shell that encapsulates the rim. In another aspect, a void defined by a rim of the paper cup may be filled with a rigid filler material, and the rigid filler material may be one that expands upon application of heat thereto. In yet another aspect, the paper cup may include a separate rim component that is attached to the sidewall. The separate rim component may be formed from molded pulp fibers, and it may include a flange portion that is attached to the sidewall and a rim portion that protrudes from the sidewall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.