Plastic closure with compression molded barrier liner
US6399170B1 · kind B1 · utility
26Cited by
46References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1997 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Dec 24, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic closure that includes a cap having a base with a peripheral skirt defining a cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by compression molding in situ. The liner consists essentially of a blend of a matrix polymer, a particulate barrier polymer and an compatibilizer. The heat and pressure of compression forms the particles of barrier polymer into platelets that are oriented essentially parallel to the plane of the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.