Method and apparatus for coating paper with an aqueous dispersion of latex

Claim 1

THE METHOD OF DEPOSITING A VARIABLE BUT PREDETERMINED COATING OF RUBBER ON PAPER AND STORING THE SAME IN ROLLS WHEREBY THE PAPER AND ATTACHED COATING MAY BE UNROLLED TO PRESENT THE RUBBER COATING IN CONDITION TO COHERE TO ITSELF WHICH COMPRISES BRINGING THE PAPER INTO CONTACT WITH A COATING ROLL WHICH DIPS INTO AN AQUEOUS DISPERSION OF LATEX AND ROTATES IN A DIRECTION OPPOSITE TO THAT IN WHICH THE PAPER IS MOVING, DEPOSITING SUCH AQUEOUS DISPERSION OF RUBBER ON ONE SIDE ONLY OF SAID PAPER IN A UNIFORM MEMBRANE OF PREDETERMINED THICKNESS BY PASSING THE MATERIAL IN CIRCUMFERENTIAL AREA CONTACT WITH THE ROLL TO SUCH AN EXTENT THAT THE MEMBRANE WILL HAVE A UNIFORM CONSISTENCY AND THICKNESS, SETTING-UP THE MEMBRANE BY THE APPLICATION OF HEAT TO A DEGREE PROPORTIONAL TO THE THICKNESS OF THE RUBBER APPLIED TO THE EXTENT THAT THE COAL ING WILL TEMPORARILY COHERE TO ITSELF BUT NOT ADHERE TO OTHER SURFACES SUCH AS GLASS, ENAMEL, METAL AND THE BACK OF THE SHEET, AND ROLLING THE RESULTING LAMINATED SHEET TO EXCLUDE AIR AND MAINTAIN THE CONDITION OF THE RUBBER AS TEMPORARILY COHESIVE UNTIL IT IS DISPENSED BY UNROLLING.

Claim 2

THE METHOD OF DEPOSITING A VARIABLE BUT PREDETERMINED COATING OF RUBBER ON PAPER AND STORING THE SAME IN ROLLS WHEREBY THE PAPER AND ATTACHED COATING MAY BE UNROLLED TO PRESENT THE RUBBER COATING IN CONDITION TO COHERE TO ITSELF WHICH COMPRISES BRINGING THE PAPER INTO CONTACT WITH A COATING ROLL WHICH DIPS INTO AN AQUEOUS DISPERSION OF LATEX AND ROTATES IN A DIRECTION OPPOSITE TO THAT IN WHICH THE PAPER IS MOVING, DEPOSITING SUCH AQUEOUS DISPERSION OF RUBBER ON ONE SIDE ONLY OF SAID PAPER IN A UNIFORM MEMBRANE OF PREDETERMINED THICKNESS BY PASSING THE MATERIAL IN CIRCUMFERENTIAL AREA CONTACT WITH THE ROLL TO SUCH AN EXTENT THAT THE MEMBRANE WILL HAVE A UNIFORM CONSISTENCY AND THICKNESS, SETTING-UP THE MEMBRANE BY THE APPLICATION OF HEAT TO A DEGREE PROPORTIONAL TO THE THICKNESS OF THE RUBBER APPLIED TO THE EXTENT THAT THE COAL ING WILL TEMPORARILY COHERE TO ITSELF BUT NOT ADHERE TO OTHER SURFACES SUCH AS GLASS, ENAMEL, METAL AND THE BACK OF THE SHEET, AND ROLLING THE RESULTING LAMINATED SHEET TO EXCLUDE AIR AND MAINTAIN THE CONDITION OF THE RUBBER AS TEMPORARILY COHESIVE UNTIL IT IS DISPENSED BY UNROLLING.