Method for manufacturing footwear last, and footwear last manufactured by the method
US8968633B2 · kind B2 · utility
3Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2010 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Jul 26, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43D3/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided is a footwear last, being of a structure where its interior is hollow. The method includes steps of installing a parison for manufacturing a plastic vessel between left/right molds for manufacturing the footwear last, with the left/right molds opened; injecting a last manufacturing material into a tube of the parison; blowing air while closing the left/right molds; molding the material in a temperature of about 400 C to 70° C. and under an injection pressure of about 600 kg/cm2 to 1400 kg/cm2; and completing the last whose interior is hollow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.