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The invention provides a process, and product thereof, for forming a chemically resistant fusion bonded seal between chemically dissimilar materials by use of a chlorinated polyolefin film for protective garments. The process involves placing the chlorinated polyolefin film between two dissimilar fi

The invention provides a process, and product thereof, for forming a chemically resistant fusion bonded seal between chemically dissimilar materials by use of a chlorinated polyolefin film for protective garments. The process involves placing the chlorinated polyolefin film between two dissimilar films such as a facepiece and the fabric film of the garment and applying heat and pressure. The resulting fusion bonded film composite is strong, flexible and upon the application of sufficient stress exhibits total cohesive rupture failure.

대표청구항 ▼

1. A process for bonding an optically transparent facepiece onto a protective garment wherein said garment fabric and flurocarbon facepiece consist respectively of chemically dissimilar flexible films said garment fabric material comprising polyethylene, said process comprising the steps of:a) apply

1. A process for bonding an optically transparent facepiece onto a protective garment wherein said garment fabric and flurocarbon facepiece consist respectively of chemically dissimilar flexible films said garment fabric material comprising polyethylene, said process comprising the steps of:a) applying a bonding agent consisting essentially of chlorinated polyolefin film seam layer along the inside edges of an aperture in said garment fabric material; b) placing said facepiece film in contact with said chlorinated polyolefin film; c) applying a chlorinated polyolefin film seam layer to the side of said facepiece not in contact with the chlorinated polyolefin film; d) applying a polyvinyl chloride film over the seam layer of step c), and then; e) heating the composite thus obtained to an effective temperature to cause the chlorinated polyolefin films and garment fabric material to flow about the edges and sides of the facepiece to form a fusion bond seam and placing the composite under pressure for a dwell period until a chemically resistant liquid and gas impervious seal is formed only about the edges and sides of said facepiece.