Moire floor covering and method for its manufacture

Details Moire floor covering and method for its manufacture Moire floor covering and method for its manufacture

1996-03-04

1998-10-20

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

52177, 52664, E04F 1116

Patent

active

058247351

ABSTRACT:
A rubber moire floor covering is disclosed. The covering is produced by continuously feeding a screw-type short extruding machine having a length/diameter ratio of 6:1 with two or three varicolored strips of vulcanizable elastomeric material. The operating temperature is between 60.degree. C. to 100.degree. C. The elastomeric material leaves the extruder via a perforated disk having 200 to 600 cylindrical bore holes 3-5 mm in diameter. Each of the resulting strands is severed to produce segments that are 1 to 2 mm thick, the formed pieces are then cooled off on a section 4 meters to 6 meters long. Subsequently, the formed pieces are allowed to fall into the roll nip of a temperature controllable two-bowl calendar. The web of material leaving the calendar is fed to a continuous vulcanization installation and leaves it as finished floor covering. The material throughput rate in this continuous process may be varied from 700 kg/h up to 1300 kg/h.

REFERENCES:
patent: 2083201 (1937-06-01), Poppe
Oberseite Elastischer Bodenbelage, Bezeichnungen RAL-RG 725/1, Deutsches Institut fur Gutesicherung und Kennzeichnung, Nov. 1983.

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