Paper layers laminated by polyethylene layer

Abstract

Abstract A LAMINATED TISSUE AND POLYALKYLENE PAPER PRODUCT AND A METHOD OF MAKING IT. THE LAMINATE SHEET MATERIAL COMPRISES TWO SHEETS OF TISSUE PAPER BONDED TOGETHER BY AN INTERMEDIATE, CONTINUOUS POLYALKYLENE LAYER WHICH IS SUBSTANTIALLY COMPLETELY IMPREGNATED SUBSTANTIALLY EQUALLY INTO THE ADJACENT TISSUE SURFACES WITHOUT PENETRATING THROUGH TO THE EXTERIOR SURFACES OF THE LAMINATE. TWO OPPOSED WEBS OF TISSUE PAPER AND A SUBSTANTIALLY CONTINUOUS CURTAIN OF MOLTEN POLYALKYLENE ARE FED INTO THE NIP OF A PAIR OF COACTING PRESSURE ROLLERS. THE RATE OF MOLTEN POLYALKYLENE FLOW IS REGULATED IN THE RANGE OF FROM ABOUT 20% TO ABOUT 30% OF THE TOTAL WEIGHT OF THE LAMINATE, AND THE PRESSURE OF THE ROLLERS AGAINST THE WEBS PASSING THEREBETWEEN IS REGULATED TO FEED SAID WEBS THROUGH THE NIP WITHOUT SLIPPAGE RELATIVE THERETO AND TO FORCE SAID WEBS INTO SUBSTANTIAL CONTIGUITY, WITH THE POLYALKYLENE SUBSTANTIALLY COMPLETELY IMPREGNATED INTO BUT NOT COMPLETELY THROUGH SAID WEB.

Inventors

• 👤 Wendell H Stepp

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