Processing for producing a covering of an elastomer material and intermediate product thereof
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United States of America Patent
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Issued Date -
Jan 13, 2005
app pub date -
Aug 7, 2003
filing date -
Aug 13, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The process aims at providing a covering, such as a flooring, that has an appearance substantially free from phenomena of directionality, starting from a vulcanizable elastomer material, the said process comprising the operations of: feeding an extruder with strips of vulcanizable elastomer material of different color, subjecting said material to extrusion, causing it to pass through a drawplate provided with openings; subjecting to shredding the material obtained by means of drawing so as to obtain, as a result of the action of shredding, a granular material; subjecting said granular material to mixing until it is rendered substantially homogeneous; feeding said granular material rendered homogeneous by mixing to a calender, by direct feeding by gravity of the homogeneous granular material into the gap between the rollers of the calender so as to obtain, as a result of calendering, a strip of vulcanizable elastomer material; and subjecting said material in the form of a strip to vulcanization. The aforesaid granular material rendered homogeneous constitutes the intermediate product of the process.
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