B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 15/08 (2006.01) B23K 20/02 (2006.01) B23K 20/16 (2006.01) B29C 43/28 (2006.01) B32B 37/24 (2006.01)
Patent
CA 2051077
METHOD AND APPARATUS FOR THE MANUFACTURE OF A LAMINATE OF TWO METAL SHEETS AND A THERMOPLASTIC MATERIAL LAYER BETWEEN THEM ABSTRACT OF THE DISCLOSURE A laminate of two metal sheets and a layer of thermoplastic material is made by moving the two sheets along respective paths so that they approach each other at a region of convergence and feeding extruded thermoplastic material into the region of covergence so that the material is squeezed between the converging sheets to form the layer adhering to said sheets. To improve bond strength, and reduce bonding time, an extruding nozzle for the thermoplastics material of slot shape is located relative to the region of convergence so that a body of said thermoplastics material in flowable state is formed in the convergence region in contact with the sheets, the layer being continuously drawn from the body and the body being replenished by extrusion from the nozzle. The body is wider than said extrusion slot as seen in section in the width direction of the slot. (Fig. 6)
Hoogovens Groep Bv
Ridout & Maybee Llp
LandOfFree
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