DE2801851A1 - BAG WITH HANDLE - Google Patents

Description

BAG WITH HANDLE

The invention relates to an elastic bag with a handle for packaging liquids in which there is be consumable, such as a mineral water, a drink based on fruit juice, an edible oil, milk, vinegar etc., or can be non-edible, such as a mineral oil for engines, a liquid detergent; In addition, the elastic according to the invention Bags are also used to package light solids, such as granulated sugar, rice, detergent powder, granulated fertilizer, etc. In a very special way is the invention Pouch a resilient pouch with a handle designed to stand upright on a base remains when it is partially or completely filled with the liquid to be packed or the light solid to be packed and which is simple and easy as a result of the handle provided

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can be easily handled in contrast to more rudimentary packaging such as "Berlingots" or similar packaging which does not have a storage base and which consequently, when opened and partially emptied, will result in spillage of its contents as a result of it Prone to instability.

By the FR-PS 21 71 001 an elastic packaging with handle is protected, which consists of two walls made of elastic Plastic with a substantially rectangular contour is made, which walls in with each other on at least three of their sides Are connected, whereas a deformable bellows or a deformable bellows in the area of the fourth side between the two walls corresponding cushion is provided, while a handle near one of the angles of the opposite to the bellows Rectangle is provided, on the one hand in an obliquely aligned welding line that connects the two bag walls and on the other hand in one between this welding line and the corresponding corner of the rectangle is obliquely cut free elongated opening. Figures A and B of the accompanying drawings are taken from FR-PS and show such a bag in Figure A in view and in Figure B in section along the line B-B of Figure A. In these figures a single plastic film 20 is shown, which is used to form a profile substantially in the shape of a W (Figure B) is folded over so as to form a bag 21, after which the film 20 is then welded along three sides 22, 23, 24 which lie opposite the bellows 21. One oblique aligned weld line 25 joins the two side walls of the bag from the top 24 to the vertical Side 23 of the bag, while an elongated opening 26 inclined between the weld line 25 and the corresponding Vertex of the rectangle is freely cut, a detectable

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Handle forms. Under the weight of the liquid contained in this packaging, the bellows 21 flattens and becomes practically level, which thus creates a stable surface for the bag, which consequently spontaneously upright stop. To remove the contents from the bag, the user cuts the upper angle opposite the handle of the bag along the dotted line 27, he grasps the handle, he lifts the bag and pours it its contents through the opening created in this way by tilting the bag like a pot. The one in the FR-PS stated advantages regarding this pouch with handle are:

- it is able to stand upright when it is full and also when it contains only a small amount of liquid, the weight of this liquid being sufficient to keep the bellows flat;

its appearance is significantly improved with regard to the well-known "Berlingots";

its handle allows it to be grasped like a normal pot for emptying, while its flat bottom then, if the bag is not to be completely emptied immediately, put it down in an upright position, for example in one Refrigerator or closet, permitted;

- It is very easy to stack flat if it is empty before it is filled;

it is particularly suitable for storing milk.

However, when using it, it should be noted that such a bag also has various disadvantages:

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1) The handle lacks rigidity and strength as its thickness is simply twice that of the for the plastic film used to manufacture the bag corresponds.

2) As a result of this lack of strength, the handle is not an aid, a contribution to the stability of the To afford the bag when its contents are more or less emptied.

3) In addition, the bag has always been a result of missing Rigidity when pouring the contents, the tendency to move back and forth along the weld line 25, the works like a hinge, which results in a lack of precision when pouring the liquid that only goes through Adding the other hand to support the pouch can be weakened or suppressed.

4) In addition, the arrangement of the opening 26, where the Fingers to grasp the handle are inserted, set and far from the center of gravity of the liquid arranged containing bag, which is why the corresponding stress for tilting the bag in the course of pouring out the liquid is too significant; furthermore moves with decreasing liquid level in the Inside the bag, the center of gravity continues further away from the opening 26 of the handle, as a result of which the stress increases accordingly. When the contents of the bag have been almost completely poured out, the wrist must be in it Immediately perform such a deflection to dispense the remaining liquid that the user is his another hand must operate to support the bag and

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thus relieving the stress acting on the wrist.

The invention therefore relates to a new elastic bag with a handle for receiving or packaging liquids, which is improved in overcoming the various disadvantages noted above.

The elastic pouch according to the invention with a handle, which consists of two superimposed walls of square to rectangular shape made of elastic plastic, both of which vertical sides and their overhead horizontal sides are welded together by heat sealing and their lower horizontal edges connected to one another via a bellows or an analog widening or gusset element stand while a sloping weld line extends up the two walls from the upper horizontal side welded to one of the two vertical sides of the bag thus formed by creating a tight space in the bag for receiving the liquid to be packaged and a second tight space defined as a handle, is characterized by that the weld line from the top of the bag is located at a point in the area between the first quarter and extends the fourth quarter of the length of the upper side and with the vertical side of the pouch so formed in proximity of the intersection between the vertical side and the bellows or gusset is in connection and that the serving as a handle second tight space is filled with a pressurized gas.

As a result of the compressed gas, which is preferably compressed air, the inflated handle has a very high rigidity and a thickness equal to several tens of times the thickness

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the plastic film used to make the bag. The disadvantage specified above under 1) is thus overcome.

Due to the great rigidity of the handle, it makes a significant contribution to the stability of the bag, if a more or less significant part of the liquid that the bag originally contained has already been poured out, which means that the above under 2) Disadvantage is overcome.

In the case of the bag according to the invention, during pouring the liquid does not cause any reciprocating movements of the bag, since on the one hand, as stated above, the out Bag and handle existing unit is very rigid and on the other hand, the point of capture of the bag with the Fingers in the same place as the weld line, causing a reciprocating movement of the bag around it Line around is made impossible while the inflated area of the handle lies in the cavity of the user's hand, thus ensuring good coverage. As a result of this, the pouring out of the liquid contained in the bag can take place with very great precision, without that the other hand of the user must be used to assist the bag during this pouring. It thus becomes the one specified under 3) above Disadvantage overcome.

When using the bag according to the invention, the arrangement of the fingers of the hand for pouring out the liquid can vary and at any point along the Weld line are provided. The further this arrangement

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the finger is away from the top of the bag, the greater the incline of the bag. Consequently there Regardless of the extent to which the bag is filled and also the arrangement of the center of gravity of the bag, there is a position for the fingers along the welding line where the inclination is of the pouch can be reached without excessive and inconvenient flexion of the wrist. The tilting or pouring can thus without the aid of the other hand of the user to support the bag and thus to facilitate the Pouring out the liquid take place. Thus, the disadvantage indicated above under 4) is overcome.

The type, thickness and dimensions of the plastic film used for the manufacture of the bag are not considered in view of the novel features of the invention to pull. It can just as easily be a film made from a single heat-sealable plastic (such as polyethylene, Polypropylene) such as a laminate, produced by lamination of any number of plastic films (such as polyethylene, polypropylene, polymethyl terephthalate, polyamide, PVC, a copolymer of acrylonitrile, polyvinyl alcohol, etc.); however, at least one of these films consists of a heat-sealable plastic in order to allow the manufacture of the "pouch" to enable thermal welding. In the case of one Laminate can do this, inter alia. contain a material in film form other than plastic, for example a sheet or a foil made of paper, aluminum, tin, etc., as is customary or ongoing in the packaging sector. That Material for the manufacture of the bag according to the invention will of course depend on the one to be packaged Liquid or the light solid to be packaged.

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chooses.

Likewise, the formation of the bellows or gusset, which serves as a floor space for the bag according to the invention, not under the scope of the invention. This bellows or gusset can be folded in a W-shape (in the Case of a single packaging film or a laminate for the production of the bag) or by thermal welding of an attached bellows or gusset (in the case of two packaging films or laminates, which at the bald or gusset are welded together for the production of the bag). Instead of one The bellows or gusset can of course also be flat Floor, which is achieved by folding the film into a V-shaped profile or any other system of designing the Find bags use, which gives this a level bottom.

The formation of a weld line, which in the invention Bag separates two tight spaces from each other, is ultimately no longer a novelty and represents a working method well known in the packaging industry (see in particular FR-PS 21 71 001).

The new features of the bag according to the invention exist on the one hand in the arrangement of the welding line in the bag and on the other hand in the inflation of the handle used Area of the bag with pressurized gas.

As already indicated above, the weld line goes from the upper side of the bag at a point located in the space

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between the first quarter and fourth quarter of the length of the upper side, and stands with one of the vertical Sides of the bag in the vicinity of the intersection of this vertical side in connection with the bottom bellows.

The expression “in the vicinity of the intersection” is to be understood at the same time as the actual one mentioned Intersection and the area of the vertical side of the bag at a short distance from it. It is advantageous that the weld line ends as close as possible to this point in view of the fact that this point is the point of the vertical side of the bag is closest to the center of gravity of the latter; as already explained above, can the same with increasingly closer detection of the bag with regard to the center of gravity of the same, the liquid remove from the bag or pour it out when the latter is almost empty, namely by adjusting the angle of flexion between the arm and Wrist of the user is reduced to a minimum. The weld line can be straight or curved own. In the case of a curved course, it is advantageous that the corrugations of the weld line are substantially have approximately the size of your fingertips in order to also capture the handle of the bag along to improve this weld line.

Regarding the handle according to the invention, which is operated with a pressurized gas, is preferably inflated with compressed air, the degree of inflation of the handle should be such that the Thickness of the same at the point of its maximum thickness several tens of times the thickness of that used for the manufacture of the bag Foil corresponds. The upper limit of the extent

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the inflation depends on the mechanical properties of the one or more plastics used and the resistance of the welds made in the manufacture of the bag. Of course, the degree of inflation is determined in view of the mechanical resistance of the finished bag selected as high as possible.

In the following the invention is described in more detail with reference to the drawings and an associated manufacturing method; in the Drawings shows:

Figure 1 is a perspective view of a

Plastic film folded to form a W. and for use in the manufacture of a bag according to the invention,

Figure 2 is a plan view of the film of

FIG. 1, in which a series of transverse welds are formed by thermal sealing the vertical sides of the bags are made,

Figure 3 is a detailed view of the transverse

running weld seams as shown in Figure 2,

Figure 4. a bag with a straight,

inclined welding by thermal sealing to form the

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two separate rooms in the bag is carried out,

Figure 5 shows a finished bag in which the

upper side is closed by thermal sealing, one of the Spaces containing liquid and the other compressed air,

FIG. 6 shows a section through the bag of Figure 5 along the line VI-VI, Figure 7 to 9 three stages in the manufacture of the he

inflated handle according to the invention,

Figure 10 with a bag according to the invention

curved, sloping welding line and

Figure 11 with a bag according to the invention

sinusoidal, oblique welding line, each bulge of which is about the thickness of a finger owns.

According to FIG. 1, a plastic film 1 is W-shaped Fold or a bellows or gusset 2. This film 1 (FIG. 2) runs through a machine (not shown) which forms transverse welds 3 which form the vertical sides the later bag form. According to FIG. 3, the film 1

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with their transverse welds 3 along the axis 4 of these welds 3 to form a row individual bag cut up. According to FIG. 4, the bag is provided with a weld 5 for dividing it into two spaces, namely a space 6 for receiving the liquid to be packaged and a space 7 for forming the handle of the bag.

FIG. 5 shows the bag, the liquid to be taken up or to be stored (or a light solid) up to a Level 8 in the space 6 and compressed air in the space 7 when the upper side 9 of the bag is closed by means of a contains thermal seal seam. In Figure 5 shows a dashed line Line 10 the point where the upper corner of the bag is used to empty the liquid (or the light Solids) must be cut off.

Figure 6 shows in section the bag of Figure 5 along the line VI-VI of Figure 5. Figures 7 to 9 show schematically how compressed air is introduced into the space 7, the Forms handle of the bag. The device of FIGS. 7 to 13 has an injection probe 11 for compressed air, welding jaws 12 and rubber beads 13. FIG Space 7 inserted probe 11 before the formation of the handle of the bag. According to FIG. 8, compressed air is being injected by means of the probe 11, the sealing of the space 7 with the aid of the rubber beads 13 is ensured. After that, the Probe 11 withdrawn from space 7, the rubber beads 13 still compressing the walls of space 7 and whereupon the welding jaws 12 then seal the upper side of the space 7, as shown in FIG. The sealing of the room 7 can be done before, during or after the

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sealing of the space 6 take place, which is in the bag contains liquid to be absorbed (or the corresponding light solid).

FIG. 10 shows that the welding line 5 can be guided in a curve, while this welding line 5 according to FIG is straight forward. FIG. 11 also shows that the weld line 5 can be sinusoidal, each curvature of which has approximately the width of a finger.

Two concrete examples of the packaging of a liquid in the bag according to the invention now follow.

example 1

On a Jenco packaging machine, a bag according to the invention is built up from a laminate of a polyethylene terephthalate film with a thickness of 12 Ai, a polyacrylonitrile ^! ie with a thickness of 20 ^ u and a polyethylene film of medium density (d = 0.923) with a thickness of 100 μ .

As shown in Figure 1, the laminated film has a W-shaped fold 2 such that the thermally sealable polyethylene layer is located inside the blank. According to Figure 2, transverse welds 3 are carried out, which the vertical sides of the bag after the axial Form cutting through the welds according to FIG. The bags cut off in this way become one again thermal sealing along the transverse welds 3 subjected to ensure the seal

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the lower ends of the vertical sides of the bags below the intersection of these two sides with the apex the W-shaped fold 2, as a result of the expulsion of part of the melted polyethylene at this point, which forms the inner layer of the laminate, which thus ensures the sealing of the lower ends of the bags when it cools down again. Then a weld line 5 of a straight shape is carried out according to Figure 4, which starts from a point approximately in Area of the upper side 9 of the bag starts and near the intersection of one of the vertical sides 3 of the Bag ends with the bellows or gusset 2. The liquid to be taken up then becomes the same in space 6 of the bag Introduced time at which compressed air is introduced into the space 7, as FIGS. 7 to 9 show, the seal the upper side 9 of the entire bag, in other words the sealing at this point of the spaces 6 and 7, at the same time takes place.

Example 2

A bag according to the invention is produced on a Hamac-Höller packaging machine by means of a laminate which is thermally sealable on both sides and consists of an aluminum foil with a thickness of 12 μ , which is sandwiched between two low-density polyethylene films (d = 0.912) with a thickness of 80 μ laminated i st.

For the production of the bag and the introduction of a liquid into it, the procedure is exactly as in Example 1 with the exception that here a curved or curved weld line 5 as shown in FIG.

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will see and that the sealing of the lower ends of the vertical sides of the bag is below the point of intersection these two sides with the apex of the W-shaped Fold or the bellows 2 is carried out over the entire width of the connection, provided that the two Sides of the laminate used for the manufacture of the bag are in this case thermally sealable.

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Blank

Claims (4)

DR. A. VAN DERWERTH DR. FRANZ LEDERER REINER F.MEYER DIPL.-ING. (! 934-1974) DIPL-CHEM. DIPL.-ING. 8000 MUNICH 80 LUCILE-GRAKN-STRASSE TELEPHONE: (089) 472947 TELEX: 524624 LEATHER D TELEGR .: LEATHER PATENT January 17, 1978 M / ku 25.36.06 UCB, S.A. 4, Chaussee de Charleroi Saint-Gilles-lez-Bruxelles, Belgium PATENT CLAIMS Bag with handle consisting of two walls of square to rectangular shape lying one on top of the other elastic plastic, the two vertical sides of which and the top 1 i eg en de horizontal sides by heat sealing are welded to each other and their lower horizontal edges via a bellows or an analog widening or gusset element are connected to one another, while an obliquely formed weld line the two walls from the upper horizontal side to one of the two vertical sides of the so formed Bags are welded together, creating a tight space in the bag for receiving the liquid to be packaged and a second tight space is defined as a handle, characterized in that the weld line (5) of the top of the bag at a point located in the space between the first quarter and the fourth quarter 809829/0979 - 2 OhIGi! -Ai- IMSPcCTED the length of the upper side, starting and with the vertical Side of the pouch thus formed near the intersection between the vertical side and the bellows (W) in Is connected and that serving as a handle second tight space (7) is inflated with a pressurized gas is. 2. Bag according to claim 1, characterized in that the Weld line (5) is straight. 3. Bag according to claim 1, characterized in that the weld line (5) is curved. 4. Bag according to claim 1, characterized in that the The weld line (5) is sinusoidal, each undulation thereof being approximately the width of a finger. 809829/0979