| 摘要 |
PURPOSE:To accomplish accurate bonding and connection of plastic tubes by connecting them with an adhesive colored differently from the tube insertion part making the tube receiving part transparent. CONSTITUTION:A tube joint 1 made of a transparent hard vinyl chloride resin has tube receiving parts 11 and 11 at both open ends thereof. The insertion parts 21 and 21 of hard vinyl choride tubes 2 and 2 colored in gray, for instance, are tentatively inserted into the tube receiving parts of the tube joint without applying adhesive to determine the position and length of the tubes. Then, in the final tube installation, the tube insertion parts 21 and 21 of the tubes are inserted into the tube receiving parts of the tube joint and bonded together with an adhesive colored different by from vinyl tube. This gives a discrimination of the color of the adhesive from outside thereby making it clear whether the adhesive are applied or not. |
