Method of making a molded product having a functional film the product and apparatus for making the product
US5827469A · kind A · utility
3Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1996 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Apr 10, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/3456
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Molding methods for disposing a functional film on a hollow inner surface or undulated surface. A blow molding process for manufacturing a molded product having a hollow part and a pressure forming process for manufacturing a molded product having an undulated part, and the products produced there from. Before the parison or forming material is cooled and solidified, a compressed fluid containing a material for forming a film is supplied into a die, thereby forming a film simultaneously when molding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.