| 摘要 |
Plastic water tank is made up of two identical injection-molded or injection-compression molded half-shells (1). These fit together to form a peripheral channel (26) for a seal which has a flange (22) extending outwards from it. The shells have weldable sections (16, 17) which fit against each other and have a thickness which is more than half that of the tank walls (30). The half-shells may be welded together to form a monolithic structure or held together by clamps with a seal between them. An independent claim is included for a method for making the water tank by injection molding or injection-compression molding half-shells as described. |
