| 摘要 |
Method and means for dispensing a meltable moisture curable composition from a package in which it is stored, without premature cure of the composition. The package comprises a tubular body portion closed at one end by means of a closure member, the closure member having an outlet opening and being sealingly secured to the body portion in such a manner as to leave a narrow annular space between the closure member and the tubular body portion and comprising at the other end a closure piston and a plain closure. A package is described and claimed which contains a solid meltable moisture curable adhesive composition. The rim of the piston projects towards the closure member and is in sliding sealing engagement with an inner wall of the body portion, the rim being received in the annular space between the body portion and the closure member as the piston approaches the closure member so that the container can be substantially completely emptied. Apparatus is described comprising a heated platen on which the package may be located for melting the composition adjacent the closure member, and a piston element for urging the closure piston of the package to expel melted composition through an exit port provided in the apparatus. The exit port is adapted to co-operate with the outlet of the package so as to provide a moisture proof seal between the outlet and the exit port means, and the apparatus is arranged for conducting melted composition from the exit port means to a dispenser nozzle without exposing the composition to atmosphere. |
