Method for producing a molded article with a laminated structure
US8313683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2009 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Feb 10, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/14286
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a plastic laminated article comprising a surface layer of a sheet-like surface member and a synthetic resin backing material layer laminated on the surface layer, without causing a fracture or a reduction in wall thickness of the sheet-like surface member. When the male mold is pressed against the contact area of the sheet-like surface member, the temperature of the contact area of the sheet-like surface member gradually falls due to a thermal gradient between the male mold and the contact area of the sheet-like surface member. Simultaneously, the contact area of the sheet-like surface member is not heated directly. In addition, the direction of jet flow of a hot fluid is changed, by fluid guide surfaces, from the center of the sheet-like surface member to the outer periphery, of the sheet-like surface member. When the temperature of the contact area of the sheet-like surface member falls to a predetermined temperature and the tensile strength of the contact area increases to a predetermined value, the male mold is moved downwardly at a predetermined rate and closed against the female mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.