Method for manufacturing a shoe insole
US6338768B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 7, 2000 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Jul 7, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1084
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method is provided for manufacturing a shoe insole. First, high density thermoplastic material and low density thermoplastic material are conveyed through two feed pipes respectively into a heated pressing machine. When the high and low density thermoplastic materials are conveyed through a mold head of the pressing machine, they are heated and pressed to bond with each other to form an elongated flat dual density plastic plate structure which is then rolled by rollers of a rolling machine so as to fit the thickness of a shoe insole. A non-woven fabric is then adhered on a top face and a bottom face of the elongated flat dual density plastic plate structure which is then rolled and flattened by the rollers of a rolling machine, and is then cut by a cutting machine into a plurality of dual density shoe insole blanks, each of which is then heated and pressed by a heat forming mold so as to form a shoe insole product which includes a rear heel support portion made of the high density thermoplastic material and a front sole support portion made of the low density thermoplastic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.