Method of manufacturing thermoplastic resin container
US7582249B2 · kind B2 · utility
4Cited by
14References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2003 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Feb 14, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7132
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a method for manufacturing a thermoplastic resin vessel, in which a cup-shaped vessel is thermally formed from a thermoplastic resin sheet by a plug, the method including the steps of: pre-forming a portion of the thermoplastic resin sheet corresponding to an orifice portion or a flange portion of the cup-shaped vessel; and clamping the pre-formed portion of the thermoplastic resin sheet to accomplish the forming. According to the manufacturing method, thickening of a vessel bottom part and warpage of the flange portion can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.