| 摘要 |
<p>The cartridge assembly for dispensing at least one component comprises a cartridge (54) having a rigid cartridge cylinder (55), a membrane (51) containing liquid chemical (2) and a dispensing assembly comprising a plunger (52), the dispensing assembly being arranged thus, that the membrane (51) is turned "outside in" within itself by the action of the plunger such that the inner surfaces of the turned "outside in" and the wall portions (51A, 51B) of the membrane slide relative to each other during emptying of the package. The plunger (52) is provided with sealing means, whereby the sealing means of the plunger (52) is its length (L), which is equal or greater than the length (DW) of the longitudinal walls (51A, 51B) of the membrane (51) after the complete displacement action of the plunger and is designed to function such that the longitudinal wall of the plunger acts on the folded walls (51A, 51B) of the container for sealing the gaps between the walls (51A, 51B) of the membrane (51). <??>Such a device requires considerably less dispensing force which is important particularly for a hand driven apparatus, and still allows an efficient sealing of the liquid while dispensing. <IMAGE></p> |
