| 摘要 |
<p>A plastic pressure vessel having an access fitting 10 is disclosed. The pressure vessel has a liner 30 defining a container with an access opening. The fitting 10 comprises a body portion 12 defined by a hollow cylindrical neck portion 14 having an upper annular rim 16 and a radially flaring flanged portion 18. The fitting 10 further comprises a plastic covering portion 20 surrounding the neck portion 14 and covering and conforming to an upper surface of the flanged portion 18 and conforming to the upper annular rim. The body portion 12 is formed from a plastic material having a higher tensile modulous and higher deflection temperature than the plastic covering portion 20 which forms a fusion bond with the liner 30.</p> |
