ES2930243T3 - Bag to contain a plurality of articles of personal hygiene and method for its manufacture - Google Patents

Abstract

Bag for the accommodation of various hygiene items, in particular nappies, which is formed from a material having a paper layer and a sealable lining arranged thereon at least in sections, in particular over the entire surface, facing inwards of the bag, the bag having a front pocket wall and rear pocket walls, which are formed from a continuous network of material and extend in at least one longitudinal dimension and one transverse dimension, the bag having a head area and a bottom area on the opposite transverse sides, the bag front wall and the bag rear wall being folded over one another via a folding device provided in the head area and heat-sealed to one another in the area of the side edges extending in the longitudinal dimension and each having the sealable liner over a predetermined width. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Bag to contain a plurality of articles of personal hygiene and method for its manufacture

[0001] The invention relates to a bag for the casing of various hygiene articles, in particular nappies, which is formed from a material having a paper layer and a sealable lining which is arranged at least in sections, in particular on the entire surface, and faces an interior of the bag, wherein the bag has a bag front wall and a bag back wall, which are formed from a continuous network of material and extend at least in a longitudinal dimension and in a transverse dimension, the bag having an upper and a lower region on opposite transverse sides, the bag front wall and the bag rear wall are folded on top of each other via a folding device. folded provided in the head area and are joined in the area of the side edges that extend in the longitudinal dimension and each one having the sealable coating in a predetermined width others are heat-sealed ados.

[0002] Packaging for hygiene products made of PE film are known in particular from the state of the art. Although it is a highly optimized packaging application from an economic and ecological point of view, there are preferences for paper material among consumers, based on the assumption that it would be more environmentally friendly. However, a particular challenge here is that the side edges of the bags cannot be separated and welded at the same time with this material by means of separation welding, as is the case with PE bags. Papers with an additional film layer, eg polyethylene PE, are often used for this function. However, this can limit recyclability and compostability. In this context, coatings without a film and with a large proportion of biodegradable ingredients are preferred, for example. Another challenge with paper with a sealable liner is connecting the outer sides of the packaging, where the paper layer of material faces each other, for example at the corners. FR 2854870 A1 discloses a bag for packaging hygiene articles. Other bags are also known from DE 202015 106355 U1, FR 1470595 A, US 4966286 A and DE 20 15 205 A1.

[0003] Therefore, the object of the invention is to improve an environmentally friendly hygiene article packaging in such a way that production is simplified.

[0004] This object is achieved by a bag having the features of claim 1 and by the method of claim 11. Each of the dependent claims relates to advantageous embodiments of the invention.

[0005] Provision is therefore made for the bag to be configured as a porthole bag and to have a protruding material section in the lower area of the front or rear wall of the bag, in which at least two openings are arranged for gate pins. Since the bag material used cannot be separated and joined by shear welding, it is particularly advantageous to heat-seal the side edges of the bag to one another over a width of several millimeters. Due to the inward facing surfaces of the coating and the welding of these opposing sealing coatings, it is sufficient to apply the sealing coating to the paper with a thickness that corresponds to half the thickness of the sealing material needed to join the side edges. . It can be provided that the floor surface is provided for removing the hygiene article. For this, the lower area can have a perforation. The perforation can be carried out in particular in the vicinity of the lateral edges, parallel to the longitudinal dimension of the bag. It is intended to provide the bags to be filled with hygiene items as gate-type bags or pin-type bags. For this, the bottom area can have an opening facing the inside of the bag. In addition, the lower area on the front or rear wall of the bag has a protruding section of material that can be used to close the bag. The excess material section also has two dowel holes. In order to prevent the material from tearing when removing it from the gate pin, provision can be made for the protruding material section to fold back on itself and for the gate pin holes to be arranged in this double-layer section.

[0006] In particular, it can be provided that the mutually sealed side edges are designed as flat seams. In order to make optimal use of the properties of the sealable paper for the bag, flatlock seams are particularly suitable for joining the two layers of material. In this way, the layers can be joined to one another particularly easily when the flat web of material passes through a welding station, for example by vertically lowering the welding rods. In addition, the seam width can be selected in such a way that two flat seams of adjacent bags can be produced at the same time and separated in a later step.

[0007] It can also be provided that the predetermined width of the side edges is 5 to 15 mm, preferably 8 to 12 mm, particularly preferably 10 mm. The seam width can be selected depending on the size of the bag or the item to be packed, for example, in order to be able to provide the individually required stability.

[0008] Furthermore, when filled, the bag may have a body formed by the front and rear walls of the bag, having a front surface, a rear surface, two side surfaces connecting the front surface and the rear surface, and two upper and lower surfaces connected to the front surface and the front surface rear and adjacent to the side surfaces.

[0009] In addition, it can be provided that when the bag is filled, the flat seams run in the region of the side surfaces. When filled, the front and rear walls of the bag can protrude around the packed articles so that flat seams run in the area of the side surfaces created by the shape of the article. Flat seams can protrude perpendicular to the side surfaces. Furthermore, the flat seams can be heat sealed to the side surfaces by means of a sealing wax applied to them or to corresponding sections of the side surfaces.

[0010] It can be provided that at the transitions between the head surface and the adjacent side surfaces at least one corner projection of the bodywork is formed. By filling the bag with a plurality of items which, when combined, have an essentially cube-shaped outer contour, the bag conforms to this shape and forms outwardly protruding corners in its unfilled edge areas. For example, in the case of a bag without a top fold, ie when the front and rear walls of the bag are folded over one another by a single fold, two corners protrude.

[0011] In addition, the folding arrangement provided in the head area can have an inserted head fold so that at the transitions between the head area and the adjacent side areas at least two opposite corners are formed, which protrude from the body. In particular, the head fold can be designed in such a way that the fold arrangement has three folds in the head area, so that a fold is inserted between the front and rear walls of the bag. The top fold can be used, for example, to create a base with which the filled bag can stand upright without falling over. In addition, the top fold can ensure that the bag looks attractive or more items can be accommodated in the bag. If a top fold is provided, the bag has four corners in the top area instead of two, which are caused by the two outer folds of the corresponding fold arrangement.

[0012] It can be provided that at the transitions between the head surface and the adjacent side surfaces in each case at least one protruding corner of the body is folded over the head surface. In the folding arrangement without a head fold, the head region can have two corners in particular. In the case of the folding arrangement with a head fold, the head area can in particular have four corners. For optical and spatial reasons, it may make sense to fold the protruding corners over the body of the bag.

[0013] In particular, the folded-back corners on the head surface may be heat sealed to the head surface by means of a sealing wax applied at least locally to the paper layer. The sealing wax can be applied to the inside of the corners and/or to the corresponding areas of the head surface spot or flat. Since paper cannot be welded "from the outside to the outside", applying the sealing wax to these areas means that the material can be connected in these areas as well.

[0014] In addition, the front and rear walls of the bag can be heat-sealed to one another via a flat seam arranged in the bottom area, which extends in the transverse dimension and has the sealable liner over a predetermined width. This allows the bag to be closed after filling. The flat seam protruding from the bag can be attached to the body of the bag, for example, by at least partly applying and heating a sealing wax. The width of the flat seam can be dimensioned in such a way that a flat gripping strip is formed in the floor area. The handle area can be formed in particular after the bag has been filled. In particular, a closure weld can be made below the handle to seal the interior of the bag. In addition, a weld can be made above the handle, comprising a separation process in the area of the gate.

[0015] The bag can also have a grip strip arranged in the head area, which is formed at least partly by heat sealing the front and rear walls of the bag, the grip strip extending over the transverse dimension and starting from the folding arrangement in the longitudinal direction in a predetermined grip width. In this embodiment, instead of the inserted head fold or instead of the bag being configured as a flat bag, a gripping strip can be provided in the head region. The front and rear walls of the bag can be heat sealed together over the entire area of the handle strap. The front and rear walls of the bag may also be heat sealed to each other over only a portion of the grip strip. The predetermined grip width can be 4 to 8 cm, preferably 5 to 7 cm, particularly preferably 8 cm.

[0016] In addition, the grip strip may have a die-cut carry handle.

[0017] Furthermore, a method for producing bags according to one of the preceding claims is claimed, comprising the following steps:

providing an endless web of material having a paper layer and a sealable liner arranged at least in sections, in particular over the entire surface, in the paper layer, the material web is folded one on top of the other along the endless direction with the paper layer outwards through a folding arrangement, the web of material being folded one on top of the other in such a way that it has a protruding material section in front of the folding arrangement, in which at minus two wicket pin holes;

[0018] Heat the strip of material in the area of the sealing seams to be applied transversely to the endless direction, the sealing seams having at least twice the predetermined width; separation of the web of material along the applied sealing seams to form individual bags. The production of sealing seams with a width corresponding to twice the predetermined width makes it possible for two adjacent bag side seams to be produced simultaneously per sealing process. In particular, provision can be made for the generated seams to be cut in half.

[0019] The heating of the strip of material can include the preheating of the sealing seams to be applied. Alternatively, the heating can already include heat sealing of the sealing seams.

[0020] The process step of separating the sealing seams may include fixing the web of material. Fixing preferably takes place before the sealing seams are separated.

[0021] In addition, cutting the seals can include reheating the seals to heat seal the folded layers of web material together. In particular, it can be provided that the first heating of the web of material, if necessary, and the separation of the sealing seams take place in separate stations.

[0022] Embodiment examples of the invention are explained with reference to the following Figures. It shows:

Fig. 1 an unfilled bag in plan view of the front wall of the bag;

Fig. 2 a perspective view of the head area of two bags with an inserted head fold;

FIG. 3 is a perspective view of the head region of a filled bag with an inserted head fold;

Fig. 4 is a side view of the head area of a single pleat filled bag without inserted head pleat;

Fig. 5 a side view of the head area of a filled bag with an inserted head fold;

Fig. 6 a side view of the bottom area of a filled bag with a welded grip strip;

Fig. 7 a perspective view of an empty bag with a folded peel-off strip;

Fig. 8a a front view of an embodiment of the bag with welded handle bar and inlaid head fold;

Fig. 8b shows a side view of an embodiment of the bag with a welded grip strip and an inserted head fold.

[0023] The bag 1 shown in Figure 1 in the unfilled state is formed from a continuous band of material 24. The material has a paper layer 2 and a sealable liner 3 arranged over the entire surface. The paper layer 2 faces the outside of the bag and the sealable liner 3 faces the inside 4 of the bag. The bag is rectangular in shape with a longitudinal dimension 7 and a transverse dimension 8, the longitudinal dimension 7 being greater than the transverse dimension 8. The material strip 24 folds back on itself in the area of a folding arrangement 11 in the example The embodiment shown with an inserted head fold 22, i.e. by means of three folds, so that a front pocket wall 5 and a rear pocket wall 6 are formed. The head fold is inserted between the front and rear walls of the bag 5, 6 about 6 to 7 centimeters. The web sections of stacked material have aligned side edges 13 that extend in the longitudinal dimension of the bag. In the area of the side edges 13, the front and rear walls of the bag 5, 6 are heat-sealed to each other over a predetermined width b, so that 1 cm-wide sealing seams 25, designed as flat seams, connect the walls of the bag 5, 6 to each other. In the area of the head fold 22, the front and rear walls of the bag are not directly welded together, but the front wall of the bag 5 is welded to the section of the head fold in front of it and the rear wall of the pocket 6 is welded to the head fold section facing it. The bag 1 is open in the lower area 28 of the bag 1, so that no sealed seam is provided in the direction of the cross dimension 8 on the lower cross side 9 . On the rear wall of the bag 6 a protruding material section 26 is provided beyond the bag opening 30. A small strip of material is also folded over this, which is also attached to the side edges 13 by means of corresponding sealing seams 25 in the rear wall of the bag 6. Two holes 27 are provided in the folded back, which are used to fasten the bag to the slit pins. The purpose of the rear fold is to prevent the holes 27 from being torn when the bag 1 is removed from the slit pins.

[0024] Figure 2 shows in particular the folding arrangement 11 of the head fold 22 using two adjacent bags 1 . As can be seen, the head fold 22 has a total of three folds, two of these folds are formed by themselves by folding back the front and rear walls 5, 6 and the third fold is arranged between them and connects the folded sections. backwards from each other so that the head region 10 has the shape of a "Y" when viewed from the side. It can also be seen that the sealed seam 25 follows the course of the fold of the head 22 and is on the one hand between the front wall of the pocket 5 and the folded-back head fold section and on the other hand between the rear wall of the pocket 6 and the folded head section folded over it . The bags 1 shown also each have sealing seams 25 with a predetermined width b of 1 cm.

[0025] In Figure 3 a filled bag 1 can be seen, which is an embodiment as a bag 1 with an inserted head fold 22. When filled, the bag has essentially six outer surfaces, namely a head surface 19, a front surface 15, a rear surface 16, two opposing side surfaces 17 and 18, and optionally a bottom surface 20. As you can seen, a sealed seam 25 when the bag is full, runs centrally on the side surface 17 and opposite the other sealed seam 25 on the side surface 18 (not shown), which protrudes from the bag 1 perpendicular to the side surface 17 or 18. When filling the bag 1, corners 21 are formed in the edge areas of the upper fold which, due to their shape and position, cannot be filled with hygiene articles and also protrude from the bag. The substantially triangular shaped corners have the paper layer 2 on their outer surfaces, as do the remaining outer surfaces of the bag 1, in particular the side surfaces 17, 18 adjacent to the corners and the head surface 19. Therefore Therefore, a heat seal between the corners 21 and the adjacent areas is not easily possible. Therefore, advantageously, a sealing wax can be applied to the top or bottom of the corners 21 or to the respective contact surfaces of the bag 1 over which the corners are folded. By heat-sealing the corners 21 to the outside of the bag, it is possible to ensure an attractive appearance on the one hand and a secure closure of the bag 1 on the other.

[0026] Figure 4 shows an embodiment of a bag 1 that has a head region with a "simple" folding arrangement 11, in which the front wall of the bag 5 is folded over the rear wall of the bag 6 through a single fold. As a result, as shown, the filled bag 1 has only two corners 21 protruding laterally from the surface of the head 19, which in each case adjoin directly to the sealing seams 25. In this embodiment, the corners have , in particular, a tetrahedral form. In this case, it is particularly advantageous to fold the corners 21 back over the surface of the head 19 and fix them there by means of the sealing wax.

[0027] Figure 5 shows an embodiment of a bag 1, having a head area with a more complex folding arrangement 11, in which a head fold 22 is inserted between the front wall of the bag 5 and the rear wall of the bag 6, which is designed as described above. As a result, as shown, the filled bag I has corners 21 that protrude laterally from the surface of the head 19 in four opposite edge regions and each includes an outside-sealed seam section. In this embodiment, the corners have, in particular, a triangular shape. Also in this embodiment it is particularly advantageous to fold the corners 21 back over the head surface 19 or over the transition area between the head surface 19 and the side wall 17 or 18 and fix them there with the sealing wax. .

[0028] The lower area 28 shown in Figure 6 is located on the transverse side 9 of the bag 1 opposite the head area 10. In the illustrated embodiment, this lower area 28 is designed as a strip of grip 23, which extends in the plane of the longitudinal dimension 7 and the transverse dimension 8 of the bag 1 and therefore protrudes perpendicularly from the body 14 of the bag 1. The grip strip 23 has a punched-out oval carrying handle 29 , through which the bag can be transported. If the handle strip is arranged alternately in the head region, it can be produced before the bag is filled, i.e. when the bag is still flat, by making a flat sealed seam in the predetermined handle width Gb. grip strip is provided in the lower area, it is heat sealed over its entire surface after filling the bag 1. In this case, the interior 4 of the bag 1 is also closed. At the upper end of the grip strip 23, the section having the gate pin holes 27 is separated. The carrying handle 29 is stamped in a separate step.

[0029] Figure 7 shows an enlarged view of the lower area 28. The protruding material section 26 is provided adjacent to the bag opening 30 and has a free section directly adjacent to the opening 30, in which the bag is located. sealable lining 3 of the rear wall of the bag. exposed Beside this, the bag 1 has a so-called window area, in which the rear wall of the bag 6 is folded in on itself and is heat-sealed over the entire area or only in the area of the side edges 13 over the width default b. As described above, two gate pin holes 27 are provided for attaching the bag or a plurality of bags 1 to the gate pins. The folding backing prevents the holes from being ripped when removing a 1 bag of wicket pins.

[0030] Figures 8a and 8b each show an embodiment of the bag 1 with the head fold 22 inserted on one side and the grip strip 23 welded on the other side in front view and side view. The folding arrangement II with a head fold 22 serves as the basis for the bag 1 by enlarging the head surface 19. The sealing seams 25 extending over the side surfaces 17 and 18 extend at the top in "Y" shape at the corners 21 and merge with the grip strip 23 on the underside. The front wall of the bag 5 and the rear wall of the bag 6 are curved around the filled bag 1 in such a way that there are no seams on the front surface 15 and the rear surface 16.

[0031] The features of the invention described in the above description, in the Figures and in the claims may be essential both individually and in any combination for the embodiment of the invention.

Reference number list

1 Bag

2 layer of paper

3 Sealable liner

4 Inside

5 Front wall of the bag

6 Rear wall of the bag

7 Longitudinal dimension

8 Transverse dimension

9 Cross side

10 Head Area

11 Folding Arrangement

13 Side edges

14 body

15 Front surface

16 Rear surface

17 Side surface

18 Lateral surfaces

19 Head surface

20 Bottom surface

21 corner

22 head fold

23 grip strip

24 band of material

25 sealing seams

26 Section of protruding material

27 Porthole pin hole

28 lower area

29 Carry handle

30 Bag opening

b Stamped seam of predetermined width

Gb handle width

Claims (15)

1. A bag (1) for containing a plurality of personal care items, in particular nappies, which is formed of a material having a paper layer (2) and a sealable liner (3) which is arranged at least in sections , in particular over the entire surface, and facing an interior (4) of the bag (1), wherein the bag (1) has a front bag wall (5) and a rear bag wall ( 6) formed from a continuous network of material and extending at least in one longitudinal dimension (7) and one transverse dimension (8), where the bag (1) has a head area (10) and a lower area (28) on opposite transverse sides (9), the bag front wall (5) and the bag rear wall (6) are folded over one another via a folding arrangement (11). provided in the area of the head (10) and are heat sealed to each other in the area of the lateral edges (13) that extend in the longitudinal dimension (7) and which each have the sealable lining (3) in a predetermined width (b), characterized in that the bag (1) is provided with a bag with a porthole and has in the lower area (28) the front or rear wall of the bag (5, 6) a protruding material section (26) in which at least two gate pin holes (27) are arranged. The bag (1) according to claim 1, wherein the mutually sealed side edges (13) are formed as flat seams. The bag (1) according to claim 1 or 2, in which the predetermined width (b) of the side edges (13) is 5 to 15 mm, preferably 8 to 12 mm, particularly preferably 10 mm. The bag (1) according to any of the preceding claims, which in the filled state comprises a body (14) formed by the front and rear walls of the bag (5, 6) and having a front surface (15), a rear surface (16), two side surfaces (17, 18) connecting the front (15) and rear (16) surface, and two head and bottom surfaces (19, 20) connecting the front (15) and the rear surface (16) and adjacent to the side surfaces (17, 18). The bag (1) according to claim 4, in which the flat seams extend in the region of the side surfaces (17, 18). The bag (1) according to claim 4 or 5, wherein, in the filled state, at least one corner (21) protruding from the body (14) is formed in each case at the transitions between the surface of the head (19) and adjacent side surfaces (17, 18). The bag (1) according to any one of claims 4 to 6, wherein the folding arrangement (11) provided in the head area (10) has a head fold (22) inserted in such a way that at least two opposite corners (21) protruding from the body (14) are formed at the transitions between the head surface (19) and the adjacent side surfaces (17, 18), respectively. The bag (1) according to claim 6 or 7, wherein at least one of the protruding corners (21) of the body (14) is folded back onto the head surface (19) at the transitions between the head surface (19) and adjacent side surfaces (17, 18), where the folded-back corners (21) on the head surface (19) are heat sealed to the head surface (19) by means of a sealing lacquer applied at least locally to the paper layer (2). The bag (1) according to one of the preceding claims, wherein the front wall (5) and the rear wall of the bag (6) are heat-sealed to one another via a flat seam arranged in the lower area (28 ), which extends in the transverse dimension (8) and with the sealable coating (3) in a predetermined handle width (Gb), so that in the lower area (28) a flat grip strip (23) is formed . The bag (1) according to one of claims 1 to 4, which has a grip strip (23) arranged in the head region (10), handle strip formed by heat sealing the front wall of the bag bag (5, 6) to the rear wall of the bag (5, 6) at least in sections, where the grip strip (23) extends over the transverse dimension (8) and, from the folding arrangement (11), in the longitudinal direction in a predetermined handle width (Gb). A method for making bags (1) according to any of the preceding claims, comprising the steps of: Providing an endless web of material (24) having a paper layer (2) and a sealable liner (3) arranged at least in sections, in particular over the entire surface, on the paper layer (2), being folded the web of material (24) one above the other along the endless direction with the paper layer (2) facing outward through a folding arrangement (11), in which the web of material (24) it is folded one on top of the other in such a way that it has, in front of the folding arrangement (11), a protruding material section (26) in which at least two gate pin holes (27) are arranged; heating the strip of material (24) in the area of the sealing seams (25) to be applied transversely to the continuous direction, the sealing seams (25) having at least twice the predetermined width (b); Separation of the band of material (24) along the applied sealing seams (25) to form individual bags (1). The method of claim 11, wherein separating the sealing seams (25) comprises fixing the web of material (24). The method of claim 11 or 12, wherein separating the sealing seams (25) comprises reheating the sealing seams (25) to heat seal the folded layers of material web. The method of any one of claims 11 to 13, wherein the folding arrangement (11) comprises an inserted head fold (22). The method of any of claims 11 to 14, further comprising the step of: Before inserting the head fold (22): apply a sealing lacquer at least in certain areas to the section of the material mesh intended for the head fold (22).