Method for making straps

A - Human Necessities – 45 – C

Patent

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Details

154/117, 24/30,

A45C 13/30 (2006.01) B29D 99/00 (2010.01) A44C 5/00 (2006.01) B29C 33/38 (2006.01) B29C 33/40 (2006.01) B29C 43/02 (2006.01) B29C 53/06 (2006.01) B29C 59/02 (2006.01) B32B 37/00 (2006.01)

Patent

CA 1125644

ABSTRACT Disclosed is a method for marking a laminated thermoplastic sheet from end can be cut one or more embossed straps having a loop at least at one end for recelving the cross-pin of a watch, buckle or the like. In a preferred method, a sandwivh of an expanded thermoplastic layer and an unexpanded thermoplastic layer, for example, expanded polyvinyl chloride and unexpanded polyurethane, is subjected (a) to a flow molding step to not only bond the layers together but also to emboss the free surface of the expanded layer and form an elongated groove in at least the unexpanded layer, (b) to a folding step about the longitudinal axis of the groove to form a U-shaped second sandwich with the unexpanded layer pressed onto itself and with a loop at one end formed by the folded-over groove portion, (c) to a bonding step to bond the unexpanded layer to itself without closing the loop or distorting the ebossed free surface of the expanded layer and (d) to a cutting step for producing the desired strap shape from the bended second sandwich with the strap having the loop at one end in the as-cut position. Both the tongue and buckle portion of a watch strap can be thereby mass produced with appearanceand feel closely resembling that of a natural leather strap.

341348

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