Self-bonded tissue-fiber laminate process
Abstract
Abstract A PROCESS FOR JOINING INDEPENDENT FABRIC STRUCTURES COMPRISED OF A WEB OF LIGHT WEIGHT CREPED CELLULOSE WADDING, A LAYER OF OREINTED FIBERS, AND AN INTERMEDIATE LAYER OF SUBSTANTIALLY CURED, THERMOPLASTIC ADHESIVE. THE PROCESS COMPRISES (1) PREPARING A LAMINATE CONSISTING ESSENTIALLY OF AT LEAST TWO FABRIC STRUCTURES POSITIONED SUCH THAT A PORTION OF THE CELLULOSE WEBS OF EACH OF THE STRUCTURES ARE IN OVERLAPPING CONTACT, (2) WHILE, MAINTAINING THE LAMINATE AT A TEMPERATURE OF AT LEAST 300*F., APPLYING PRESSURE TO THE LAMINATE TO CAUSE A PORTION OF THE INTERMEDIATE LAYER OF SUBSTANTIALLY CURED, THERMOPLASTIC ADHESIVE IN EACH OF SAID STRUCTURES TO FLOW THROUGH ITS OWN CELLULOSE WEB AND INTO AND THROUGH THE DELLULOSE WEB OF THE STRUCTURE IN CONTACT THEREWITH, AND (3) COOLING THE LAMINATE.
Inventors
- 👤 A Earl Capell
- 👤 Leroy E Wilson
Bibliographic Details
Claims Analysis
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