A - Human Necessities – 41 – D
Patent
A - Human Necessities
41
D
A41D 27/24 (2006.01) B29C 65/00 (2006.01) B29C 65/02 (2006.01) B29C 65/08 (2006.01) B29C 35/08 (2006.01) B29C 65/04 (2006.01) B29C 65/06 (2006.01) B29C 65/10 (2006.01) B29C 65/16 (2006.01) B29C 65/20 (2006.01) B29C 65/48 (2006.01)
Patent
CA 2087834
An apparatus (21) for forming a butt seam between opposed edges of resiliently compressible fabric sheets (28, 29), such as foamed neoprene for wet suits and dry suits. The apparatus (21) includes fabric manipulating assembly (23) which continuously compresses the sheets proximate and inwardly of the edges (32, 33), preferably by a roller assembly (26, 27), to form opposed shoulders or areas (43, 44) that will permit the application of a lateral force to firmly press the opposed edges (32, 33) of the flexi- ble and compressible sheets (28, 29) tightly together during movement and bonding along the seam. The apparatus (21) preferably includes adhesive activation means (24) in the form of an ultrasonic transducer (91) which contacts the neoprene pieces in adv- ance of compression rollers (26, 27) to activate a dry neoprene cement carried on the edges of the fabric pieces. A method for forming the butt seam is described, as are alternatively adhesive activating assemblies and a seamed neoprene fabric sheet.
Meltzer Mark J.
Tompkins Tommas J.
O'neill Inc.
Riches Mckenzie & Herbert Llp
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