DE3821490A1 - Bag closure valve - Google Patents

Abstract

A reusable screw clamp serves for the pressure-tight closure of plastic bags. With the aid of a detachable suction tube, evacuation can additionally take place.

Description

The subject of the innovation is a pressure-tight, re-usable closure for cooking or freezer bags, which additionally optionally allows evacuation of the aforementioned bags. The following are known for sealing bags:
Wire loops, crimping elements, film sealing apparatus with evacuation devices, closures with integrated non-return devices, systems with separate suction device and additional compression fittings, etc.

All mentioned bag closures and suction aids are either too large for practical mass use, too expensive, too cumbersome to use, or too un safe in function. For example, some of the disadvantages affect the home Holds bag sealers where the welds hold tight only to a limited extent. Closures with an integrated non-return element must stick to every bag and thus enlarge measurements and costs. Wire loops can only serve as closures and at Careless use tear the pouch film.

Therefore, in order to make the bag closure as small as possible, reusable, safe in function and also usable for evacuating the bag, the object of the innovation is achieved according to the invention by design features as described by an exemplary embodiment described below in FIG. 1 to 3 are shown.

Fig. 1 shows the individual parts in section or in a view from below. The

Fig. 2 and 3 give the appearance of function.

The free end of a filled bag ( 15 ) is summarized through the opening ( 2 ) of the support ring ( 1 ) leads, unfolded and fixed with the clamping cone ( 11 ) of the suction tube ( 10 ) in the opening ( 2 ). Via the mouthpiece ( 13 ) with the check ball ( 12 ), the air is sucked out of the bag ( 15 ) and then the bag is rotated below the support ring to form a closed strand ( 16 ), thus preventing the air from flowing back. Now the support ring ( 1 ) with the handle ( 6 ) is tilted ( Fig. 3) so that the strand ( 16 ) in the Ausneh tion ( 5 ) and can be held with the handle ( 6 ) at the same time. The screw ( 21 ) is screwed into the now exposed thread ( 7 ) and the strand ( 16 ) is clamped pressure-tight between the sealing surfaces ( 22 ) and ( 3 ). During this process, the suction pipe ( 10 ) is also pushed out of the opening ( 2 ) by the screw ( 21 ).

Instead of the recess ( 5 ) on the support ring ( 1 ), a continuous slot can also be provided.

The check ball is made of a material with a lower specific weight than that of water, so that when liquid is sucked in, the ball floats and closes the suction opening at ( 14 ).

In another embodiment of the innovation of the support ring of the screw can of FIG. 4 alternatively with an external thread (31) are provided and, together with a union nut (32) in place to form the closure. The bag is also handled here, as described above, the bag strand ( 16 ) then passed through a slot ( 33 ) in the external thread and clamped on the surface ( 34 ).

Claims (5)

1. bag closure valve, characterized in that the support ring of a clamping device, consisting of a threaded piece with a handle, alternately either with a suction tube, or with a clamping screw for sealing a string of bags is a related party. 2. bag closure valve, characterized in that the string of bags in a threaded recess of the Support ring is guided. 3. bag closure valve, characterized in that the suction pipe contains a non-return element. 4. bag closure valve, characterized in that the suction pipe through the screw plug is pressed. 5. bag closure valve, characterized in that the bag is twisted into a strand and by subsequently tilting the support ring Thread of the support ring for screwing in the closure screw releases.