Heat treatment tunnel
US4674197A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Oct 1, 2005 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06C7/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A heat treatment tunnel for the treatment of fibers, threads slit film or the like fibrillary material used in the textile field is arranged to extend horizontally. The material to be heat treated is transported along a travel path, in endless length form, through the horizontally arranged tunnel. This tunnel includes a heat-insulated housing having an inlet slot for entry of the material and an outlet slot for withdrawal of the material from the housing; a fan chamber; a fan arranged within the chamber for effecting circulation of a gaseous treatment medium within the housing; a heater disposed downstream of the fan for heating the treatment medium; a fan intake connecting pipe positioned either above or below the traveling material to draw the gaseous treatment medium away from the travel path and fan exhaust openings positioned either below or above the traveling material; i.e., opposite to the location of the fan intake connecting pipe, to direct the gaseous treatment medium toward the travel path. The heater extends in parallel with an in close juxtaposition to the travel path over the entire length and width of the travel path. A screen wall is arranged above and below the he…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.