| 摘要 |
<p>A keg (10) for a pressurized fluid is formed of a main body part (11), to respective open ends of which are secured upper and lower ends parts (14, 12), each of the three parts being an injection moulding of thermoplastics material and connected together by welding. Around an internal surface of the main body part (11) is an integral continuous planar flange (21) which serves to resits outwards pressure on the body when the keg is pressurized, in use, the flange defining a large central opening (22) in the interior of the keg. Ribs (25) are formed integrally with the internal body surface and flange, and extend around the flange between respective pairs of first openings (23) through the flange, smaller second openings (24) being aligned with, and disposed at the inner end of the respective ribs.</p> |
