Multi-material, multi-shot, injection molded dispensing closure having a removable seal
US5755360A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Jul 11, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D47/103
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A closure is provided for a container and includes a base which preferably has an attached lid. The base includes a body for mounting to the container, and the body defines a dispensing orifice and spout. A tamper-evident seal initially closes the dispensing orifice. The body is injection molded from a first material. The tamper-evident seal structure is subsequently injection-molded from a second material. The seal structure includes a peripheral portion molded against the base body and attached thereto. The seal structure includes a partition consisting only of the second material extending across the dispensing orifice and connected around its periphery to the seal structure peripheral portion with a frangible, reduced thickness section of the second material. A grip member extends from the partition for being pulled to tear only the partition and grip member together away from the seal structure peripheral portion so as to open the dispensing orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.