| 摘要 |
<p>PURPOSE:To make the title tank easy in molding, light in weight and strong against a shock and endure sufficiently inner and outer pressure, by a method wherein in a flange part, a latticelike rib is provided on the face opposite to its joint. CONSTITUTION:A monomer solution comprising a metathesis polymerizable cyclic olefin containing a metathesis polymer catalyst series catalyst component and a monomer solution comprised of the metathesis polymerizable cyclic olefin containing metathesis polymer catalyst series activation agent component are mixed up with each other, the raw material mixed solution is cast into a mold, polymerizing and crosslinking reactions are made to perform within the mold, through which at least, an upper tank part and lower tank part are formed. The upper and lower tank parts are fixed through a flange part 5. Latticelike ribs 7, 7' to improve rigidity are formed on the flange part 5.</p> |
