Web conveyor for a thermoforming apparatus, web support apparatus for a thermoforming apparatus, and thermoformable web support apparatus
US7210606B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2005 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Feb 4, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H23/28
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A web conveyor is provided having a frame, a pair of conveyor rails, and at least one sag rail. The pair of conveyor rails is carried by the frame in laterally spaced-apart relation. The pair of conveyor rails is configured to support and convey respective edges of a thermoformable web of plastic material. The at least one sag rail includes a friction-reducing material provided along at least a portion of a top edge of the sag rail. The sag rail is provided between the conveyor rails and extends longitudinally along a web travel path. The sag rail is configured to support a web of material intermediate the conveyor rails. A web support apparatus having one or more of friction-reducing material, local, raised portions, and a temperature regulator is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.