Method of molding polyurethane foam composites and removing them from the mold
Abstract
Abstract METHOD FOR THE CONTINUOUS PRODUCTION OF MOLDED CUSHIONING DEVICES WHEREIN A FOAMABLE COMPOSITION IS INJECTED INTO THE MOLDING CAVITY OF AN OPEN ENDED MOLD, A WEB HAVING AN ADHESIVED SUFACE IS APPLIED OVER THE OPEN END OF THE MOLD, PRESSURE IS APPLIED ON THE ADHESIVED MATERIAL TO PROVIDE A CLOSURE FOR THE MOLD CAVITY, THE FOAM IN THE MOLD IS PERMITTED TO EXPAND INTO CONFORMITY WITH THE MOLDING CAVITY WHILE THE CAVITY IS CLOSED BY THE ADHESIVED SURFACE, THE RESULTING FOAMED PRODUCT AND THE ADHESIVED STRIP ADHERING THERETO ARE SEVERED, APPLYING A WEB OF PRESSURE-SENSITIVE ADHESIVE-RECEPTIVE MATERIAL ONTO THE MOLDED PRODUCT AND THEN THE RESULTING LAMINATED STRUCTURE IS LIFTED FROM THE MOLD.
Inventors
- 👤 Erich Schickedanz
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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