| 摘要 |
The container consists of a gas-tight inner envelope, generally cylindrical in shape, with rounded ends (6), one of which has a central orifice (8) and a projecting neck (9). The two ends of the envelope are fitted with rigid reinforcing members (2), and the envelope and reinforcing members are located inside a rigid outer shell. The neck (9) of the inner envelope is cylindrical in shape, and at least one of its cylindrical walls (11) is threaded, engaging with a matching threaded recess (20) in the reinforcing member (2), and with the portions of the recess not occupied by the neck filled with an adhesive. the outer surface of the reinforcing member has ridges (25) for connecting it with the rigid outer shell. The inner envelope is made from a thermoplastic material, e.g. PVC, the end reinforcing members are of light metal alloy, and the adhesive is an epoxy adhesive. The outer rigid shell is of fibre reinforced resin. |
