Method and apparatus for attaching sealing piece onto pour-out hole of plastic closure cap or container
US4421705A · kind A · utility
16Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1982 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Sep 23, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/809
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is carried out in combination with the injection molding of a closure cap or container, wherein a continuous sealing strip having a thermoplastic resin layer on the inner surface thereof is supplied intermittently. Then a reciprocable molding member having a sharp edge at the tip thereof is advanced through the sealing strip to a position where a molding cavity in the injection mold defining a pour-out hole of a closure cap or container is closed by a sealing piece punched out from the sealing strip, and thereafter a thermoplastic resin is injected into the molding cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.