| 摘要 |
PCT No. PCT/EP97/01022 Sec. 371 Date Feb. 13, 1998 Sec. 102(e) Date Feb. 13, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31840 PCT Pub. Date Sep. 4, 1997A cartridge for flowable material has a flexible envelope having a first and a second opposed ends and defining an envelope volume for receiving the flowable material. A plunger is positioned at the first opposed end. A cover member is positioned at the second opposed end. The second opposed end has a dispensing opening. The dispensing opening has a dispensing diameter so dimensioned, according to a force exertable by the plunger in the envelope volume, a viscosity of the flowable material, and a flexibility of the envelope, as to ensure a minimum inner pressure in the envelope volume in order to prevent inward folding of the envelope into the interior of the envelope volume. |
