| 摘要 |
PROBLEM TO BE SOLVED: To attain a technical purpose in which a synthetic resin blow molded tube is formed so that its shape is maintained substantially constant when the tube is deformed and its volume decreases; a residual amount of the contents in the tube is decreased, tube main body can be stably held, and a handling characteristic is improved. SOLUTION: This synthetic resin blow tube is made such that stepped inverting lines 6 are formed at substantially axisymmetrical positions in a longitudinal direction of a shoulder part 3 and a barrel part 4 of a below molded tube main body 1 having a port cylinder part 2 to which a pouring-out pump is assembled, the shoulder part 3 and the barrel part 4 provided with a bottom seal part 5 at its lower end; a thin-walled inverting part 7 which can be inverted and deformed in a rearward direction as the volume of the tube main body 1 is decreased is formed over a substantially entire half region of the front sides of the shoulder part 3 and the barrel part 4 with the stepped inverting lines 6 being applied as interfaces; a thick-walled half shell part 8 keeping its shape while it is being handled is formed at a substantially entire half region of the rear part; and the inverting part 7 can be easily sunk and deformed into the half shell part 8. COPYRIGHT: (C)2003,JPO
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