Method for producing skin-covered foamed molded article and apparatus for producing thereof
US10279558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2013 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | May 11, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2049/5837
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a skin-covered foamed molded article including blow-molding a parison in a mold cavity to form a skin consisting of a hollow molded body, in which the parison is in a softened state by extruding a molten thermoplastic resin, filling expanded beads in the hollow molded body, and heating and fusion bonding the beads by supplying steam via a steam supply pipe inserted into the hollow molded body. The parison is in contact with a protruding portion, formed by protrusion from an inner surface of the mold cavity to an inside of the cavity, forming a recessed portion having a shape corresponding to the protruding portion in the inward direction of the hollow molded body. A steam hole is formed in the recessed portion, a steam supply pipe is inserted into the body, and the expanded beads are heated and fusion bonded by supplying steam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.