Method for using a sprue to reduce the size of a core layer hole in an injection molding process by terminating an injection stream within the sprue
US6649101B2 · kind B2 · utility
10Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Jul 31, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for extruding plastic articles, the method comprising the steps of injecting at least one stream of plastic material into a mold, the mold including a first portion and a second portion, the first portion of said mold being used for forming at least one article, and the second portion of said article forming a sprue attached to the at least one article, and, terminating the at least one stream of plastic material in the second portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.