Flame resistant rendering heat treating device, and operation method for the device
US7335018B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2002 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Jan 11, 2024 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F9/32
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A heat treatment apparatus for oxidation having an oven for oxidation having a heat treatment chamber having a plurality of slits through which fiber strands running horizontally leave or returned strands enter and capable of sending hot air vertically from above the fiber strands to allow the fiber strands to have oxidation, and a device for feeding hot air into the heat treatment chamber, and a plurality of returning rollers which are provided at the two outsides of the oven for oxidation and which return the fiber strands entering and leaving through said slits, into the oven for oxidation, wherein each gap formed between fiber strands and each side wall of heat treatment chamber parallel to the running direction of fiber strands running in the heat treatment chamber, or each gap formed between fiber strands and each channeling-preventing plate interposed between the side wall and the fiber strands in parallel to the running direction of fiber strands is set at 150 mm or less. The slits may be provided with a device for injecting hot air into the heat treatment chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.