| 摘要 |
PROBLEM TO BE SOLVED: To simply open a caulking tube for extrusion of a sealant without staining the tip of a nozzle by a method wherein opening is made either by extracting an inner stopper or by breaking a part at the middle of the inner stopper. SOLUTION: An extrusion port 4 is sealed up by screwing an inner stopper 8 down into an internal thread 7 at the inner circumferential face of an extrusion port 4. The inner stopper 8 is formed in a cylindrical shape being opened toward the inside of a container main body 2 with a top board 9 provided thereon, and a external thread 10 is formed at the outer circumferential face thereof. A shoulder part is formed at a nozzle 5 so that a flange part 9a of the inner stopper 8 is pressed therewith. A holding part 11 is made up in a measurement small enough for being concealed in the nozzle 5. After the main body 2 is filled with a sealant (caulking agent), a synthetic resin plunger is inserted into a caulking tube 1 and the sealant is enclosed in the main body 2. On opening the tube, the nozzle 5 is taken out, and the inner stopper 8 is unscrewed and removed. |
