Cylindrical receptacle of fiber-reinforced plastic and method of manufacturing a receptacle

摘要

A receptacle comprises a circularly cylindrical wall having a closing end wall connected to each end. All of the walls are made of a fiber reinforced plastic resin material and the circularly cylindrical wall has at least two radially spaced layers with at least one of the layers having reinforcing glass fibers therein oriented in a circumferential direction with an intermediate layer between the spaced layers containing a mineral granular material embedded in the resin. The vessel is made either by forming a completely cylindrical intermediate wall and joining rounded end sections to the intermediate wall at each end by an overlapping joint or by an abutting joint which is closed on the exterior by an encircling band. Alternately, the separately fabricated end parts may be joined together by centrifugally forming an intermediate circularly cylindrical wall between them. The circularly cylindrical intermediate wall may also be formed as two separate parts integral with the end formations which are subsequently arranged in end-to-end abutting relationship and joined together and preferably secured at their exterior by an encircling band.