Method and apparatus for heating thermoplastic bottle preforms
US4606723A · kind A · utility
36Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1985 |
| Grant date | Aug 19, 1986 |
| Priority date | — |
| Expiry date | Mar 28, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2949/0715
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Thermoplastic preforms are heated in preparation for the blow molding of bottles therefrom in a tunnel (1) provided with infra-red radiators (13). Supports (19) for the preforms (17) move along the longitudinal axis of the tunnel while revolving. The enclosed space formed by the tunnel is connected to an exhaust blower (16) that draws in air through a longitudinal slot (3) in the bottom of the tunnel, through which the preforms extend, to thereby prevent the necks (18) of the preforms from becoming hot and deforming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.