Process of producing rubber latex dispersion containing rubber crumb granules

Claim 1

A PROCESS OF PRODUCING A COMPOSITION OF MATTER, WHICH COMPRISES THE STEPS OF FORMING A MIXTURE OF A FOAMABLE AQUEOUS NATURAL RUBBER LATEX DISPERSION WITH RUBBER CRUMB GRANULES OF A SIZE RANGING FROM 0.1 MM. TO 3 MM. IN THE PROPORTION OF BETWEEN 2 AND 14 PARTS BY VOLUME OF SAID RUBBER CRUMB TO 1 PART BY VOLUME OF THE TOTAL RUBBER CONTENT OF SAID RUBBER LATEX DISPERSION, STIRRING THE MIXTURE THUS PRODUCED TO FOAM SAID MIXTURE TO FORM AIR BUBBLES EACH BOUNDED BY AN ENVELOPE OF RUBBER ADHESIVE, SHAPING SAID FOAMED MIXTURE INTO A LAYER, THEN HEATING THE LAYER AT BETWEEN 95* AND 105*C. TO DRY SAID MIXTURE AND TO COLLAPSE THE ENVELOPES ENCLOSING SAID AIR BUBBLES THEREBY SUBSTANTIALLY DESTROYING SAID FOAM WITHOUT REDUCING THE THICKNESS OF SAID LAYER, SAID HEATING BEING CARRIED OUT AT SUCH A RATE AND FOR SUCH A PERIOD OF TIME THAT THE RUBBER CRUMB GRANULES DO NOT SETTLE OUT FROM THE FOAM LAYER, WHEREBY SAID RUBBER CRUMB GRANULES ARE BONDED INTO STRAIGHT AND BRANCHED CHAINS TO PRESENT A LARGE NUMBER OF INTERCOMMUNICATING CAVITIES OPEN TO THE ATMOSPHERE.