EP2332853A1 - Separable plastic film packaging bag - Google Patents

Abstract

The plastic film bag (1) has a mold parting line (9), which is arranged in both sides inside the bag, and is extended perpendicular to two parallel main walls (3,4) of the bag. Two adjacent narrow walls (5,6) are marked with a weakening line (11), where a middle wall (13) is fixed inside both main walls.

Description

The invention relates to a bag made of plastic film according to the preamble of claim 1.

Bags of plastic film, in particular for the packaging of lumpy goods, such as rolls of toilet paper, disposable towels, children's diapers, sanitary napkins u. Like. Especially light material often contain pieces in a side by side and / of superimposed shape. As a film material is both single-layer (mono) film as well as multi-layer (coex or laminate composite) film into consideration. In the course of the material savings and also the legislatively forced regulations for waste reduction extremely thin foils, of eg only 40μ thickness to use. However, these give the content thanks to a corresponding tensile and tear strength and a shape closely adapted to the content sufficient support and sufficient dimensional stability as a total packaging. However, this is no longer the case when the bag is broken. With the removal of a part or individual pieces of goods, the composite is lost and the bag loses its shape and is disposed of. This, and also the division of piece goods, especially in the case of many-part contents, into individual, needs-oriented piece goods groups then forces the packaging to be dispensed with. The goods are loose and without cohesion for handling and otherwise unprotected.

A bag according to the preamble of claim 1 is known from DE 20 2006 015 505 U1 in which a bag with a dividing plane can be torn open along weakening lines and then unfolded, thereby exposing a cover lug with which at least one side of the torn bag can be covered along the dividing plane. In this respect, partial coverage and thus protection of the goods contained is at least partially achieved. However, a cover with a loose cover tag is not suitable for keeping the covered part of the product in its shape. It is also to a limited extent able to provide protection against dust or other soiling as well as protection against crumpling or scratches on the surface.

The object of the invention is to provide a bag of the type considered here in such a way that it retains after opening and partial removal of goods, the remaining goods in a manageable, coherent form and protects against contamination and use loads, for such packaging in particular the For bulk goods to demanding low cost of materials, the simple mechanical manufacturing capability and further the simple machine fillability of the packaging must be maintained as the manufacturer of the goods.

According to the invention, this object is achieved by a bag according to the preamble of claim 1, starting with the characterizing features of claim 1. An adjacent to the dividing plane extending partition made of plastic film, at least on the two main walls, possibly also on the narrow walls is attached internally, provides a cover to one side of the dividing plane, which protects this side even if the other side of the dividing plane is broken. In particular, in a circumferential on both main and narrow walls of such a packaging line of weakness can be any part of the packaging then separate in a closed form and retains its uniform handling and protection of the contents. But even if the weakening line is not formed completely encircling and only a folding of the packaging allows it remains unapprehended on one side of the division level and holistically zusammenammmenhängend. This also provides good protection of the content.

Moreover, such partition walls also provide a favorable during transport and storage subdivision of the content. Especially lumpy goods in the bag are better fixed and load the outer walls less in any handling or impact load, so that even with the extremely thin films improved robustness of the bag with the partitions can be achieved.

An advantageous embodiment of the bag with two adjacent intermediate walls per division level allows to share the filled bag without breaking the resulting parts the same. The partitions can be attached as individual partitions each for themselves on the main walls and possibly also on the narrow walls. But they can also be connected in a folded form with each other, so that they are connected in the region of a fold line with one of the main walls, wherein in the region of this fold line a line of weakness for the Divisibility is to be provided, which should then run at least near the division level.

A particularly advantageous embodiment of the intermediate walls for mechanical production takes place with a tubular initial shape, wherein the hose is attached to both opposing main walls, on both sides of two parallel attachment lines, between which a line of weakness for separation and to move apart of the two partitions are provided ,

The attachment to the main walls and possibly also on the narrow walls can be done by common means. Sealable sheet material will preferably be secured by heat sealing. In addition, in the field of plastics, fastening techniques such as welding or gluing are also considered.

Although the lines of weakness can in principle be formed in various ways, for example by score lines and tear lines in the material. In the case of the usual very thin film thicknesses, however, preferably perforation lines are suitable for marking a tearing. In the case of coextruded or composite films, one or more of the layers may be severed and thus give lines of weakness.

Line of weakness may also be provided between the dividing planes to provide openings for easy tearing of the partitions formed by the partitions To allow bag sections. Likewise, handles may be preferably provided on narrow walls for handling.

The unfilled bags are preferably delivered in a prefabricated but open along a narrow side shape so that the lumpy goods are inserted in a predetermined direction before the package is closed by sealing or welding. The narrow walls on the filling side initially only as an extension of the adjacent walls, especially the main walls are present and are then brought in the desired shape after filling by folding and sealing or welding in their shape.

Fig. 1

Schrägansicht eines erfindungsgemäßen Beutels, mit Rollen von Toilettenpapier gefüllt,

Fig. 2

einen Schlauch für einen Beutel nach Fig. 1,

Fig. 3

Draufsicht auf den Beutel nach Fig. 1 in der handelsgemäßen Form

Fig. 4

Draufsicht entsprechend Fig. 3 nach Aufteilung längs einer Teilungsebene und

Fig. 5

gebrochene Teilansicht des Beutels nach Fig. 1, 3 und 4 in flach zusammengefalteter Form.

An embodiment of the invention is illustrated in the drawing and will be described in more detail below. In the drawing show in a schematic form

Fig. 1

An oblique view of a bag according to the invention, filled with rolls of toilet paper,

Fig. 2

a hose for a bag after Fig. 1 .

Fig. 3

Top view on the bag behind Fig. 1 in the commercial form

Fig. 4

Top view accordingly Fig. 3 after division along a dividing plane and

Fig. 5

broken partial view of the bag behind Fig. 1 . 3 and 4 in flat folded form.

In Fig. 1 a bag 1 for packaging rolls of toilet paper is shown together with rolls 2 packed therein, which are arranged in three adjacent 2-column. The bag 1 consists of a very thin plastic film of sealable material, in particular polyethylene (PE) with a film thickness of 40μ or even less. For reasons of illustration, the bag 1 is shown as enclosing the rollers 2 in a spacious manner. In practice, on the other hand a tight-fitting packaging is common, so that the bag is to handle as a unit together with the packaged lumpy goods.

Conventionally, the bag 1 can be thought of as starting from a cuboid shape into main walls, namely a front main wall 3 and a rear main wall 4, parallel to the front main wall 3, into two (upper and lower) narrow walls 5, 6 and into lateral narrow walls 7 , 8 members.

The interior of the bag 1 is divided according to the arranged therein in adjacent columns rollers 2 by two graduation levels 9,10, marked in the main walls and the lower and upper narrow walls respectively by lines of weakness 11,12, a slight tearing of the bag 1 and tearing off a Allow bag part.

In addition, the bags are also divided by intermediate walls 13,14,15 and 16 in the region of the two graduation levels, ie in pairs closely next to and on the one and the other side of the dividing plane.

The intermediate walls are formed in pairs by a tube 17 made of plastic film, as in Fig. 2 is shown. This hose 17 has at least mentally predetermined sealing lines 18,19 and 20,21, which come in pairs to the plant with the front main wall 3 and rear main wall - respectively on the inside - and seal on which the tube shape on both sides of the line of weakness 11 and 12 respectively is. The inserted tube 17 has between the sealing lines each have a line of weakness 22 and 23 in the form of a perforation, so that when tearing the package along one of the dividing planes 9 or 10 each half of the tube on one side and the other half on the other side remains. On each side then one of the two partitions (tube halves) is exposed as a partition wall.

In the sketch after Fig. 3 is still schematized in a plan view a complete, to be handled as a unit bag packaging 1 with rollers 2 contained therein. The Fig. 4 shows the broken along the dividing plane 10 bag from which arise with the division two round packaged sub-units 24 and 25, which are to be handled by itself with the roller column enclosed therein and protect the rollers from contamination.

From the above it is readily apparent that the shape of the tube for the formation of double partitions is only one - but easy to handle - starting form. Without further two respective intermediate walls could also be achieved by a U-shaped folded strip element, which in the central Folding region between adjacent sealing seams such as the sealing seams 18, 19 at the hose 17 in FIG Fig. 2 and then at the free ends sealing seams corresponding to the sealing seams 20,21 contains. The weakening line 23 in the tube 17 after Fig. 2 would then be unnecessary.

Further, it is of course possible to replace the created from the tube shape double intermediate wall in total by two individual walls, so that between them the lines of weakness altogether omitted and the separation only by the tearing of the bag in the parting plane along the lines of weakness in the main and narrow walls he follows.

Furthermore, an embodiment of the bag is possible in such a way that for each division level 9,10 only one side a single partition is provided so that the tearing of the packaging along the dividing plane only on this side leads to a closed and packed bag part, the other side but then it is open. If, for example, all rolls of an individual item are to be regularly removed from packaged roll goods or if (larger) rolls are stored individually in a bag part, the dividing walls need not be provided twice.

The Fig. 5 illustrates that the bag 1, despite its complex interior design, is flat in manufacturing and flat fold after production for shipping. For illustrative purposes, the front main wall 3 is largely broken away, as are parts of the upper narrow wall 5, to represent the inside of the rear main wall 4 arranged and each formed by a tube 17 partitions 13,14,15,16. The partitions are folded in the manner of a "flat" tube to one side and to the other side, so that the front main wall 3 and the rear main wall 4 come into contact with each other.

Each of the folded main walls 13,14,15,16 at the top again to the inside - each in the form of a right triangle - folded so that in the head area between the front seal lines 18,19 and the rear seal lines 20,21 a free Gap for folding the head-side narrow wall 5 is formed, which is folded in half and inserted between the main walls 3 and 4. This folded shape of the upper narrow wall 5 is also fixed by being sealed at both ends in the folded form between the main walls 3 and 4 and between their extensions, which respectively form an outwardly folded half of the narrow walls 7 and 8. This is a proven design of the corner region in flat collapsible, but cuboid fillable packaging bags, which can be maintained even with the installation of the intermediate walls in the division planes 9,10.

In Fig. 5 the lower narrow wall 6 is not shown and in fact not formed. Instead, only sufficient extensions of the main walls 3 and 4 and the narrow walls 7, 8 are provided for this, as long as the bag laid flat in the shipping is still unfilled. After machine filling from below, the narrow wall 6 is first formed with a transverse central sealing seam.

In contrast, the bag 1 in the upper narrow wall may also be completed before filling. There, for example, a handle (not shown), in particular in the form of a flat strip or film strip and be folded. It can also be there weakening lines 25,26 for easier tearing of the packaging between the dividing planes, so be attached to the packaging parts.

Claims (9)

A plastic film bag (1) for packaging goods (2) to be arranged on both sides of at least one dividing plane (9, 10), the dividing plane (9, 10) being transverse to two main walls (3, 4) of the bag (1, 4) parallel to one another ) and at least in one main wall (3, 4) and two adjacent narrow walls (5, 6) is marked by a line of weakness (11, 12), characterized by at least one intermediate wall (13, 14) extending next to the dividing plane (9, 10) , 15,16) made of plastic film which is at least on the two main walls (3,4) fixed inside. Bag (1) according to claim 1, characterized in that on both sides next to the dividing plane (9,10) in each case one of two parallel partitions (13,14; 15,16) extends. Bag (1) according to claim 2, characterized in that the intermediate walls (13,14; 15,16) at least in the region of one of the main walls (3,4) in pairs are connected to each other and there between each other a weakening line (22,23). Bag (1) according to claim 3, characterized in that the intermediate walls (13, 14; 15, 16) are connected in pairs as a tube (17) in the region of both main walls (3, 4) and are connected via double fastening lines (sealing lines 18, 19). are attached to the main walls (3,4), wherein they each have a weakening line (22,23) between the double fastening lines (18,19). Bag according to one of claims 1 to 4, characterized in that the weakening lines (11,12,22,23) are formed as rows of perforations. Bag according to one of claims 1 to 5, characterized in that it comprises a plurality of parallel and by weakening lines (11,12,22,23) marked graduation planes (9,10). Bag according to one of claims 1 to 6, characterized in that one of the perpendicular to the parting plane (9,10) lying and provided with at least one line of weakness (11,12) narrow walls (5,6) with both sides of each division plane (9,10) lying tear areas is equipped. Bag according to one of claims 1 to 7, characterized in that one of the perpendicular to the parting plane (9,10) lying narrow walls (5,6) is equipped with a handle made of plastic film. Bag according to one of claims 1 to 8, characterized in that one of the perpendicular to the parting plane (9,10) lying narrow walls (6) for a subsequent filling open with two-sided extensions of the adjacent main walls (3,4) is formed.

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