| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a synthetic resin bottle body which is excellent in blow moldability, and has a trunk wall shape that can minimize an influence of depressed deformation of each decompression absorbing panel in order to prevent depressed deformation in a peripheral region of the decompression absorbing panel caused by the deformation of the decompression absorbing panel, to thereby contribute to safe use of the bottle body in an application field where the interior of the bottle body is decompressed such as a case where high-temperature fluid is filled therein. <P>SOLUTION: The synthetic resin bottle body is a blow-molded product formed of a cylindrical mouth portion 2, a shoulder portion 3 progressively expanding downward, the cylindrical trunk portion 4, and a bottom portion 5. The trunk portion has recessed areas as the decompression absorbing panels in its walls, which are each enclosed by a step portion. A predetermined one of the decompression absorbing panels 12 has formed therein at least either an inverted U-shaped groove extending from an upper end of the decompression absorbing panel toward peripheral edges, or a U-shaped groove extending from a lower end of the same toward the peripheral edges, and a predetermined portion of the groove is set as a deep groove portion having a deeper depth via an inclined portion that is obtained by inclining a bottom wall of the groove along a groove forming direction. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
