| 摘要 |
<p>For the first time, a screw cap (1) is realized with which a tubular bag to which the screw cap (1) is attached can be opened by a self-cutting process and metered dispensing from a metering opening (31) is simultaneously realized. The screw cap (1) consists of a lower part (2), on which a spacing means (4), used in practical terms as transport protection, is placed, and onto which a cutting sleeve (3) with a lateral metering opening (31) is screwed. The container can be opened by means of the cutting sleeve (3) and thereafter its contents can be dispensed in a metered manner by means of a valve piston (5) that is guided in the cutting sleeve (3) by a screwing movement. In the closed state, the valve piston (5) reaches into the cylinder (30) of the cutting sleeve (3) underneath the metering opening (31) and seals the cylinder (30), which is open at both ends, off against the container that is welded to the flange (21) of the lower part (2).</p> |
