Eco-friendly method of manufacturing shoe material, semi-finished, and foamed shoe material made thereby
US12302985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2022 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Jul 12, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/504
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing the foamed shoe material and semi-finished product including the following steps. Step S1: a foamable material is injected into a cavity of a blank mold to solidify, thereby generating a semi-finished product of the shoe material and a runner waste that are unfoamed. The runner waste could be shed for reusing directly as the foamable material without a granulating process. Step S2: the semi-finished product is cooled down and put into a cavity of the foaming mold, and the semi-finished product is evenly foamed in the cavity of the foaming mold to obtain a shoe material wherein the waste generated during the method of manufacturing the foamed shoe material could be effectively reused, and the yield rate of the shoe material thereby enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.