Method for fabricating improved flushable wrappers for absorbent pads and product obtained thereby
Abstract
Abstract A FLUSHABLE WRAPPER FOR SANITARY NAPKINS AND OTHER ABSORBENT PADS. THE WRAPPER COMPRISES A NON-WOVEN FIBER WEB BONDED BY A COLD-WATER SOLUBLE POLYVINYL ALCOHOL ADHESIVE WHICH HAS BEEN INSOLUBILIZED IN SITU AFTER THE ADHESIVE IS APPLIED TO THE WEB. THE POLYVINYL ALCOHOL IS APPLIED TO THE WEB IN THE FORM OF A SOLUTION CONTAINING CHEMICAL ADDITIVES WHICH DO NOT GELATE OR AFFECT THE SOLUBILITY OF THE POLYVINYL ALCOHOL UNTIL AFTER HEAT IS APPLIED TO DRY THE TREATED WEB. THE HEAT CAUSES THE CHEMICAL ADDITIVES TO REACT AND TO RENDER THE POLYVINYL ALCOHOL SUFFICIENTLY WATER RESISTANT THROUGHOUT ITS STRUCTURE TO MAINTAIN WET STRENGTH OF THE WEB AT A LEVEL WHERE IT DOES NOT DISINTEGRATE IN A HEAVILY MOISTURE LADEN ENVIRONMENT. A WEB THUS BONDED HAS ENOUGH WET STRENGTH AND ABRASION RESISTANCE TO PERFORM SATISFACTORILY AT MOISTURE LEVELS EMCOUNTERED DURING NORMAL USE, YET DISINTEGRATES SUFFICIENTLY FAST AFTER SOAKING IN EXCESS WATER TO PERMIT DISPOSAL BY FLUSHING.
Inventors
- 👤 David V Duchane
Bibliographic Details
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| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
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