To less easily disconnect a neck part 4 of an outer tube B from a neck part 1 of an inner tube A without impairing the productivity in a double tube having a double structure comprising the inner tube A and the outer tube B, and capable of simultaneously squeezing out each content in both tubes.
This double tube comprises a body having an outer tube discharge hole 9 and an inner cylinder 12 having an internal space forming an inner tube discharge hole 11. In the inner cylinder 12, the outer tube discharge hole 9 is communicated with the outer tube B by fitting an intermediate plug C supported by a center part of the outer tube discharge hole 9 via a rib 13 provided between the inner cylinder 12 and the body 10 with a space in the circumferential direction of the inner cylinder 12 to a neck part 4 of the outer tube B. The inner tube discharge hole 11 is communicated with the inner tube A by fitting the neck part 1 of the inner tube A to an inner end of the inner cylinder 12 extended inwardly from the rib 13.
YAGI HAJIME
KIMURA YOSHINORI
SAKAI SHIE
OGAWARA AKIRA
ISHIJIMA MITSUO
SANPO SEIYAKU KK
JAPAN SCIENCE & TECH CORP
| JPS5452439U | 1979-04-11 | |||
| JPS60190635U | 1985-12-17 |