"Injection molding method for soles having a treading surface with colored sections and produced with expansible and cross-linking ""EVA""compounds"
US5814254A · kind A · utility
55Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D35/144
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention concerns an injection molding process for soles having a colored treading surface produced with expansible and cross-linking "EVA" compounds involving the use of colored inserts molded with the same molding material used for sole, but of a different color, fed into cups on the bottom of the mold impression and shut by caps also molded in the same material used to mold the soles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.