Automated bag on a roll

Abstract

An automated bag is provided that is made from a plastic film, with a filling opening, a front wall, a back wall and a back wall extended in the area of the filling opening to form a bag flap, wherein the front wall and the back wall are welded together on their longitudinal sides to form side walls and on a transverse side opposite the filling opening to form a bottom seam, wherein the bag has an extension projecting beyond the bottom seam and at least the bag flap is connected removably with a bag flap of an additional bag and the extension is connected continuously with the bags.

Description

[0001]This nonprovisional application claims priority under 35 U.S.C. § 119(a) to German Patent Application No. DE202007009540 US1, which was filed in Germany on Jul. 6, 2007, and which is herein incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to a bag made of a plastic film, especially an automated bag, with a filling opening, a front wall, a rear wall and a rear wall extended in the area of the filling opening to form a bag flap, wherein the front wall and the back wall are welded together on their longitudinal sides to form side walls and on a transverse side positioned opposite the filling opening to form a bottom seam.[0004]2. Description of the Background Art[0005]In the continuous manufacturing of bags it is generally known to combine a predetermined number of bags, for example a quantity of approximately 500 bags, into so-called bag stacks in a collecting device. A suitable collecting device, for example, is a p...

AI Technical Summary

Benefits of technology

[0010]It is therefore an object of the invention to create a stack of bags of the that do not require expensive auxiliaries, and in addition distinctly increases the performance capacity of a packing machine and can be obtained with minimal construction and material costs.

[0012]Through a first removable connection between two adjacent bags in the area of the bag flap and a second connection of the bag through the extension in the area of the bottom seam in accordance with the invention it is possible to supply a bag that can be rolled up. In this process the continuous extension, i.e., extending over all of the bags connected to one another, at the lower end of the bag in the area of the bottom seam serves as a retaining or winding strip. The retaining or winding strip is connected removably with the bags, which can be accomplished for example by means of a perforation that is introduced into the bag together with the production of the weld of the bottom seam. Thus the retaining or winding strip on one hand serves as a connecting link between the bags, and on the other hand a continuous plastic roller strip is supplied for reliable conveyance of the bag in the packaging machine. Before, during or after the filling of the bag the retaining or winding strip is removed from the bag and can be disposed of separately; if the retaining or winding strip is again rolled up within the packing machine, easy space-saving disposal is made possible. The removable connection in the area of the bag flap, exactly like the extension in the area of the bottom seam, serves as a retaining or winding strip, wherein the bag flap is connected permanently to the bag as a functional element, wherein the bag flap is preferably formed as part of the back wall of the bag. For reliable rolling up of the bags and guidance of the bags in the machine, the bag flaps, arranged adjacent to one another, are removably connected with one another.

[0014]Through the use of rolled bags in accordance with the invention in packing machines, the number of bags available in the machine is distinctly increased. If about 500 bags are present in a bag stack known according to the state of the art, by rolling up the bags into a bag roll it is possible, depending on the bag size, diameter of the roll and thickness of the film, to roll up a much larger number of bags on a roller or in themselves. This in turn offers the advantage that an operator of the machine can spend less time for resupplying the packing machine, which in turn positively affects the nonproductive time, especially the resupply time of the machines.

Problems solved by technology

Aside from the considerable expense for auxiliary materials, conventional bag stackers are quite difficult to pack and transport because of the awkward wicket.

Also during a packaging process, i.e., during the filling of a bag with a product, for example with a feminine hygiene article, diapers, bread or the like, considerable drawbacks occur.

Not only does the linear pulling of the bag with the product packed in require a bag of accurate dimensions, but also a sudden tearing of the starter cut area usually located between the stack openings and the front edge of the flap takes place in this process.

The starter cut edge area of the flap not only gives an unattractive appearance to the bag as a whole, but also the bag flap surface is no longer immediately suitable for reliable fastening with closure elements, such as adhesive labels or the like and / or as a surface for imprinting or for receiving instructions.

A drawback of this is that the bag stacks must still be positioned by hand in a limited number, and the perforated, blocked marginal area remaining in the machine must be removed.

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