Buckles – buttons – clasps – etc. – Bag fasteners – Resilient slot bag tie
Patent
1998-01-28
1999-09-21
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Bag fasteners
Resilient slot bag tie
24 20R, 24 20CW, 24 305R, B65D 6300, B65D 7700
Patent
active
059537949
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a magazinable strip of sealing clips for bags and tubes, whose individual clips each consist of a clip bottom and two legs and are connected with each other at the ends of the legs.
Strips of sealing clips as stated above generally consist of an originally flat basic section which for the purpose of being processed by means of automatic closing devices is formed to a strand of succeeding U-shaped individual clips. For closing a bag or tube, the same is gathered to form a tip and is inserted in a U-shaped sealing clip, which is separated from the strip. Then, the sealing clip is closed by bending the two legs of the U-shaped sealing clip toward each other. In the process, the free ends of the legs abut against each other and are upset. A description of such a closing operation and of sealing clips in accordance with the prior art can be found in DE-PS 37 15 626.
A great disadvantage of these known sealing clips consists in the fact that the cross-section of the tube or bag gathered to form a tip must lie within relatively close limits, to ensure both a safe and a tight closure. When the cross-section of the tip is too large, the free ends of the legs cannot abut against each other, and the bag or tube is not safely closed. On the other hand, when the cross-section of the tip is too small, the two legs of the sealing clip have already been upset to a maximum before the tip has been compressed completely, so that the bag or tube cannot be closed tightly. Moreover, the closing forces acting during closure are relatively great.
To eliminate this disadvantage, the width of the legs of the sealing clips was countercurrently reduced towards the free ends, so that after the closing operation the legs partly lie beside each other. From the U.S. Pat. No. 2,855,647 it is known to hold the individual clips thus formed in a self-adhesive way one behind-each other on a flexible conveyor belt, so as to make them magazinable. Another solution is disclosed in DE-GM 1 960 244; in this reference, the individual clips hang on each other in the area of the bottom and must be separated from each other at an angle to the longitudinal direction of the strip. In the commonly used automatic closing devices neither the one nor the other clips can be employed; in addition, their manufacture is much more expensive than that of the above-described strips of clips.
It is therefore the object of the invention to provide a strip of sealing clips whose individual clips adhere on each other at the ends of the legs, but are suited for a wide range of different tip cross-sections.
This object is solved by a strip of sealing clips of the above-stated type, whose sealing clips are widest adjacent the clip bottom, and the width of the adjoining legs of two adjacent sealing clips between their ends on the side of the clip bottom and their ends connected with each other unilaterally decreases to less than half their maximum width, where the decrease in width in strip direction is alternatingly provided towards the one and towards the other longitudinal side.
The trick of alternatingly providing the unilateral tapering of the leg width along the strip, so that sealing clips of different forms or in a different arrangement are always succeeding each other, provides for the production of magazinable strips of sealing clips adhering on each other at the ends of their legs even with those sealing clips as they were known in principle from the U.S. Pat. No. 2,855,647. When processing such a strip of sealing clips the consequence is, however, that the joint between the legs of one and the same clip, which were placed beside each other during the closing operation, alternatingly includes another angle of inclination with the longitudinal axis of the casing tip in succeeding clips, which is, however, unproblematic.
By means of the sealing clips of the strip in accordance with the invention bags or tubes gathered to form a tip of various diameters can be closed; the sausage tips may differ in their diameter by about 40%. In addition
REFERENCES:
patent: 2855647 (1958-10-01), Smith
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patent: 5495645 (1996-03-01), Suzuki et al.
Hanten Jurgen
Vermehren Gunter
Poly-Clip System Gmbh & Co., KG
Sakran Victor N.
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