Method and apparatus for pretreatment of a slider layer for extruded composite handrails
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United States of America Patent
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Dec 4, 2012
Grant Date -
Sep 23, 2010
app pub date -
Sep 10, 2008
filing date -
Sep 10, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for pretreatment of slider layer for extruded handrails has a slider layer source, a means of conveying the slider layer to a heating module which subjects the slider layer to an elevated temperature for a residence time, and a means of conveying the slider layer to an extrusion die head. One or more control feeders may be implemented for maintaining portions of the slider layer in a substantially tension-free loop as the slider layer is conveyed from the slider layer source to the extrusion die head. A cooling zone may be included to ensure adequate cooling between the heating module and the extrusion die head. Means for reducing heat transfer between the extrusion die head and the slider layer is also provided.
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International Classification(s)
- B28B:SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG O....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B65G:TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR L....
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
- B66B:ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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