Oliff & Berridge, PLC
Method and apparatus for forming seal portion of laminated aluminum tub
 The synthetic resin at a projecting end portion (5) projected from a clamping device (9) is heated to melt, then the projecting end portion (5) is positioned in a press molding space, which comprises an opening between an aluminum foil layer (3c) of a laminated aluminum tube and a molding wall of the press molding space. The projecting end portion (5) is pressed and molded into a sealed portion in the press molding space. The tube produced with this method has a sealed portion (8) with a desired shape, the aluminum foil layer (3) at the sealed portion (8) being completely covered and encapsulated with the synthetic resin, and the density of the sealed portion (8) improves providing excellent sealing quality. 
Yoshino Kogyosho Co., Ltd.
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Mamoru
Fujita