Carpet with a foam polyurethane backing

摘要: A TUFTED CARPET IS FORMED BY APPLICATION OF LAYER TIXOTROPIC POLYURETHANE ADHESIVE BACKING COMPOSITION TO PRIMARY MATERIAL SO THAT THERE SUBSTANTIALLY COMPLETE SATURATION THE BUNDLE WRAP WITHOUT PENETRATION THROUGH PROMARY EXPOSED PORTION MATERIAL. PREPARED MIXING TOGETHER UNDER POLYMERIZATION CONDITIONS WATER, POLYOL WITH HYDROXYL NUMBER LESS THAN ONE HUNDRED, DIISOCYANATE, FILLER AND CATALYST, OPTIONALLY SURFACTANT. OBTAINED HAS VISCOSITY BETWEEN 30,000 100,000 CPS. AT 10 R.P.M. NO. 7 SPINDLE BROOKFIELD RVF VISCOMETER, POT LIFE 20 60 SECONDS EXPANDABLE FROM ABOUT 100 PERCENT 400 WHEN COMPLETELY REACTED. APPLIED UNDERSIDE DOCTOR BLADE. UPON HEATING OR ALLOWING STAND ROOM TEMPERATURE, JELLS EXPANDS. SUBSEQUENT EXPANSION PRIOR CURING, COMPRESSIVE PRESSURE EXPANDED SELECTIVELY DISINTEGRATE LEAST FOAMED CELLS IN FORM PATTERN DESIGN.