Patent ID: 8940121
Filing Date: 2015-01-27
Classification: B29C,B29L,F17C

Abstract:
1. A method for manufacturing a storage tank, the storage tank comprising an inner liner comprising a shaped pinch, a connecting part having a slot corresponding to the shape of the pinch, and an outer filament winding; the method comprising: placing an extruded parison between two halves of a mold, closing the two halves of the mold thereby compressing the parison at least at one extremity to create a shaped pinch conforming to an internal surface of the two mold halves, wherein the shaped pinch is obtained from the compression of the parison before the parison is blown; blowing the parison to conform to the inner surface of the mold to obtain the inner liner; providing the connecting part with a slot of appropriate shape and size to receive a part of the shaped pinch; inserting the part of the pinch in the slot of the connecting part, securing the inner liner and the connecting part to obtain an assembly of the inner liner and connecting part; and applying the outer filament winding around the assembly of the inner liner and the connecting part to obtain the storage tank.