| 摘要 |
<p>A cap and tube assembly device, including a tube (11) for containing a product, a nozzle having one end mounted to one end of the tube and having a thin wall section (23) puncturable to provide a discharge on the other end and a cap (17). The nozzle has a smaller axial cross section than the tube. The junction of the tube and the nozzle define an inclined surface of transition (15) to permit flow without cavitation from the tube to the nozzle. The cap has an inside cross section sized to engage the nozzle and an outside cross section less than the inside cross section of the tube. The cap has an axially centered puncture spike (33) positioned in a first position spaced from the thin wall and movable to a second position to puncture the thin wall. The puncture means includes a chisel shaped edge (37) for forming a hole in the thin wall without fragmenting the wall. Also provided are ribs (27a, b, c) positioned in the tube for preventing entry of the cap into the nozzle when a plurality of these assemblies are stacked one on another.</p> |
