Detachable drawstring garbage bag

Abstract

The invention relates to a garbage bag (1) with a detachable tie (10) comprising: - a first portion (2) of a plastic film and a second portion (3) of a plastic film, the first portion (2) of plastic film and the second portion (3) of plastic film overlapping, in particular completely, and being welded to each other along two lateral weld lines (4, 5), in particular parallel, so as to form two lateral edges (6, 7), in particular parallel, of the garbage bag (1), - an opening (8), - a base (9), opposite the opening (8), - a detachable tie (10) welded to the first portion (2) of plastic film and / or to the second portion (3) of plastic film at at least one attachment zone (11, 15) corresponding to a portion of at least one of the two lateral weld lines (4, 5). Figure for the abstract: Figure 4

Description

Title of the invention: Detachable tie garbage bag technical field

[0001] The present invention relates to the field of garbage bags.

[0002] In particular, it relates to a garbage bag with a detachable tie, a roll of bags- a bin with a detachable tie, and a method for manufacturing a bin bag with a detachable tie. Technological background

[0003] Garbage bags can generally be differentiated according to their closure system.

[0004] Garbage bags with a detachable tie have a detachable tie (also called a "traditional tie" or "classic tie"), usually made of plastic, one end of which is welded to the bottom of the garbage bag (at a bottom seam, for example, a flat or star seam) and the other end of which is free outside the garbage bag. To close the garbage bag, the user must first detach the tie from the garbage bag and then manually tie it around the opening of the garbage bag. Garbage bags with a detachable tie are inexpensive but require two manual steps to close the garbage bag as described above. In addition, the detachable tie can sometimes be difficult for the user to find. It can also be lost, for example, by stepping on it, and thus end up in the environment as a pollutant.

[0005] There are garbage bags with a detachable tie from the "Practical Tie®" range by the "Handy Bag" brand, which, compared to traditional garbage bags with a detachable tie, have a detachable tie whose free end is attached to the top and outside of the garbage bag by means of a sticker. However, this attachment of the detachable tie by means of a sticker complicates the manufacturing process of the garbage bag.

[0006] Drawstring garbage bags are equipped with a drawstring, usually made of plastic, which is inserted into a hem at the top of the garbage bag, i.e., at its opening. To close the garbage bag, one simply pulls on the drawstring. Drawstring garbage bags are easy to close and carry thanks to the drawstring. However, they are often more expensive than garbage bags with a detachable drawstring. In addition, the drawstring can sometimes break if the garbage bag is overfilled and therefore too heavy.

[0007] Garbage bags with handles are generally equipped with two or four integrated handles on each side of the opening of the garbage bag. To close the garbage bag, one simply to tie the handles together. Trash bags with handles are very easy to close and carry thanks to the handles. Indeed, the handles offer a comfortable grip. However, trash bags with handles offer a less secure closure than trash bags with a detachable or drawstring. Furthermore, the handles can tear if the trash bag is too full and therefore too heavy.

[0008] The invention aims to further improve garbage bags with detachable ties and their manufacturing processes, and in particular to remedy all or part of the above-mentioned drawbacks.

[0009] It aims in particular to further improve the leak-proofness of garbage bags with detachable ties, to limit or even eliminate the risk for the user of not finding the detachable tie and / or to limit or even eliminate the risk of losing the detachable tie. Summary of the invention

[0010] Garbage bag with detachable tie

[0011] The invention thus relates, according to a first aspect, to a garbage bag with a detachable tie comprising: - a first portion of a plastic film and a second portion of a plastic film, the first portion of plastic film and the second portion of plastic film overlapping, in particular completely, and being welded to each other along two lateral weld lines, in particular parallel, so as to form two lateral edges, in particular parallel, of the garbage bag, - an opening, - a bottom, opposite the mouth, - a detachable link welded to the first portion of plastic film and / or to the second portion of plastic film at the level of at least one attachment area corresponding to a portion of at least one of the two lateral weld lines.

[0012] By "mouthpiece" we mean the opening of the garbage bag through which objects, such as waste, can be introduced into the garbage bag.

[0013] For example, we can also talk about the "mouth" to refer to the opening of the garbage bag.

[0014] By "detachable tie," we mean a tie that can be easily detached from the garbage bag by the user by applying a pulling force to the tie, unlike a sliding tie. The detachable tie, once detached, can then be manually tied around the opening of the garbage bag to close it.

[0015] The detachable link can be welded to the first portion of plastic film and / or to the second portion of plastic film at two attachment points corresponding to a portion of each of the two lateral weld lines, so as to extend between the two lateral weld lines. This can allow the detachable link to have Each end of the detachable link is welded to a respective lateral weld line, so that the detachable link extends between the two lateral weld lines. This makes it easier for the user to locate the detachable link compared to a detachable link with one free end.

[0016] In one embodiment, the detachable tie extends between the first and second sections of plastic film. This allows the detachable tie to be positioned inside the garbage bag. Compared to a detachable tie positioned outside the garbage bag, this can limit or even eliminate the risk of losing the tie, for example, by stepping on it. It also allows the detachable tie to be positioned outside the bin when the garbage bag is placed inside a bin and the opening of the bag covers the top of the bin. This makes it easier for the user to access the detachable tie when the garbage bag is placed inside the bin.

[0017] The attachment zone(s) may be located at the upper third, preferably at the upper quarter, of the height of the garbage bag.

[0018] By "upper third of the height of the garbage bag" or "upper quarter of the height of the garbage bag", we mean respectively the third or quarter of the height of the garbage bag which is located at the level of the mouth of the garbage bag.

[0019] This allows the detachable tie to be positioned at the top of the garbage bag, i.e., at its opening. This can be advantageous, for example, when the garbage bag is placed inside a bin and the opening of the bag covers the top of the bin, as the detachable tie is then positioned outside the bin. This makes it easier for the user to access the detachable tie when the garbage bag is placed inside the bin.

[0020] For example, the attachment area(s) is / are located over a distance less than or equal to 30 cm, preferably less than or equal to 20 cm, more preferably less than or equal to 10 cm, starting from the mouth and going towards the bottom of the garbage bag while following a lateral edge of the garbage bag.

[0021] The mouthpiece may have two free edges.

[0022] The free edges are preferably parallel to each other.

[0023] The free edges are preferably perpendicular to the lateral edges.

[0024] In one embodiment, the mouth is without a hem.

[0025] In another embodiment, the opening has a hem on each of the first and second portions of plastic film. This can improve the strength of the garbage bag at its opening, which can be useful, for example, when the garbage bag is placed inside a bin and the opening of the bin bag covers the top part of the bin.

[0026] The hems may have a height less than or equal to 10 cm, preferably less than or equal to 7 cm, more preferably less than or equal to 6 cm, even more preferably less than or equal to 5 cm, or even less than or equal to 4 cm.

[0027] Additionally, the hems may have a height greater than or equal to 2 cm.

[0028] For example, the hems have a height between 2 cm and 7 cm, preferably between 2 cm and 6 cm, more preferably between 2 cm and 5 cm, even more preferably between 2 cm and 4 cm.

[0029] The hems can be made towards the inside of the garbage bag or towards the outside of the garbage bag.

[0030] Preferably, the bottom of the garbage bag is without a bottom seam. This can help to improve the bag's leak-proofness.

[0031] The first portion of plastic film and the second portion of plastic film can be defined by the same plastic film.

[0032] Said plastic film can be folded over itself along a fold line so that the first portion of plastic film and the second portion of plastic film are on either side of the fold line.

[0033] The fold line can form the bottom of the garbage bag.

[0034] The detachable link may have a width less than or equal to 10 mm, preferably less than or equal to 8 mm, more preferably less than or equal to 7 mm, even more preferably less than or equal to 6 mm, or even less than or equal to 5 mm.

[0035] For example, the detachable link has a width of 8 mm, 5 mm, 4.5 mm or 4 mm.

[0036] The first portion of plastic film and the second portion of plastic film may have a thickness of between 15 pm and 80 pm, preferably between 20 pm and 40 pm, more preferably between 24 pm and 37 pm.

[0037] The thickness of the first and second sections of plastic film can be chosen according to the desired strength, resistance, and leak-proofness. Indeed, the greater the thickness of the first and second sections of plastic film, the greater the strength, resistance, and leak-proofness of the garbage bag.

[0038] Preferably, the first portion of plastic film and the second portion of plastic film have the same thickness.

[0039] The detachable link may have a thickness of between 15 pm and 35 pm, preferably between 20 pm and 30 pm, more preferably between 24 pm and 28 pm.

[0040] The first portion of plastic film, the second portion of plastic film and the detachable link can each be made of a hot melt material, preferably chosen from a material based on polyethylene and / or polypropylene, more preferably chosen from a material based on polyethylene, even more preferably chosen from a material based on low-density polyethylene (LDPE), high-density polyethylene (HDPE) and / or linear low-density polyethylene (LLDPE), or even chosen from a material based on low-density polyethylene (LDPE) and / or high-density polyethylene (HDPE).

[0041] The hot-melt material, preferably chosen from a polyethylene and / or polypropylene-based material, more preferably chosen from a polyethylene-based material, even more preferably chosen from a low-density polyethylene (LDPE), high-density polyethylene (HDPE) and / or linear low-density polyethylene (LLDPE)-based material, or even chosen from a low-density polyethylene (LDPE) and / or high-density polyethylene (HDPE)-based material, may be a material that is at least partly recycled or not.

[0042] Preferably, the first portion of plastic film and the second portion of plastic film are made of the same hot-melt material.

[0043] The first portion of plastic film and the second portion of plastic film, on the one hand, and the detachable link, on the other hand, can be made of the same hot melt material or be made of different hot melt materials.

[0044] For example, the first portion of plastic film and the second portion of plastic film are made of a low-density polyethylene (LDPE) based material.

[0045] For example, the detachable link is made of a high-density polyethylene (HDPE) based material.

[0046] The garbage bag can have a capacity of between 5 L and 150 L, in particular a capacity of 10 L, 20 L, 30 L, 40 L, 50 L, 100 L or 130 L.

[0047] The width of the garbage bag is equal to the distance between the lateral edges of the garbage bag.

[0048] The height of the garbage bag is equal to the distance between the bottom and the mouth of the garbage bag, in particular the distance between the fold line and the free edges of the garbage bag.

[0049] In one embodiment, the detachable tie has a length equal to the width of the garbage bag.

[0050] This is particularly advantageous since the detachable tie is then shorter than that of prior art detachable tie garbage bags, which are generally equal in length to the height of the garbage bag. The garbage bag according The invention can therefore make it possible to reduce the length of the detachable link, and thus allow a saving of material resulting in less plastic waste.

[0051] The lateral weld lines are preferably continuous.

[0052] The width of the lateral weld lines can be between 0.5 mm and 3 mm, preferably between 1 mm and 2.5 mm, more preferably between 1.5 mm and 2 mm.

[0053] The welds can be induction, high frequency, ultrasonic, conduction, laser or hot gas heating welds.

[0054] Preferably, the garbage bag complies with the NF EN 13592 standard, particularly in terms of opacity, mechanical resistance, sealing, and resistance of the detachable tie.

[0055] Roll of garbage bags with detachable tie

[0056] The invention also relates, according to another of its aspects, to a roll of garbage bags with detachable ties as defined above.

[0057] The roll of garbage bags can contain between 3 and 100 garbage bags, preferably between 4 and 50 garbage bags, more preferably between 5 and 35 garbage bags.

[0058] In one embodiment, the garbage bags are pre-cut and rolled around an axis parallel to the lateral weld lines of the garbage bags so as to form a continuous roll of pre-cut garbage bags.

[0059] In another embodiment, the garbage bags are detached from each other and wound around an axis parallel to the lateral weld lines of the garbage bags so that the garbage bags overlap within the roll (also called a "bag-to-bag", "interleaf" or "interleaved" roll).

[0060] Method for manufacturing a garbage bag with a detachable tie

[0061] The invention also relates, according to another aspect, to a method for manufacturing a garbage bag with a detachable tie as defined above, the method comprising the steps of: a) to have a plastic film in the form of a half-sheath, the plastic film comprising: - a fold line, - a first portion and a second portion, separated by the fold line, the plastic film being folded back on itself along the fold line so that the first portion and the second portion overlap, in particular completely, b) positioning the detachable link between the first portion and the second portion of the plastic film at the level of a first lateral weld line, preferably perpendicular to the fold line of the plastic film, c) to perform a weld along the first lateral weld line so as to, on the one hand, weld the detachable tie to the first portion and the second portion, and on the other hand, weld the first portion to the second portion, thus forming a first lateral edge of the garbage bag, d) extend the detachable link from the first lateral weld line to a second lateral weld line, preferably separate from and parallel to the first lateral weld line, between the first and second portions of the plastic film, preferably in a direction parallel to the fold line, e) to make a weld along the second lateral weld line so as to, on the one hand, weld the detachable link to the first portion and to the second portion, and on the other hand, weld the first portion to the second portion thus forming a second lateral edge of the garbage bag.

[0062] Preferably, the fold line forms the bottom of the garbage bag.

[0063] Preferably, the plastic film in the form of a half-sheath has two free edges, opposite the fold line.

[0064] Preferably, the two free edges are parallel to each other and parallel to the fold line.

[0065] Preferably, the free edges form the mouth of the garbage bag.

[0066] Preferably, the detachable link is packaged in the form of a reel.

[0067] Step b) can be implemented by introducing a tube, in particular metallic, for example aluminum-based, between the first portion and the second portion of the plastic film in the form of a half-sheath, the detachable link being inside the tube.

[0068] Thus, the tube can act as a guide for the detachable link during its scrolling.

[0069] The tube can be introduced at the free edges of the plastic film in the form of a half-sheath, preferably perpendicular to the fold line.

[0070] Preferably, the plastic film in the form of a half-sheath is wound around an axis perpendicular to the fold line so as to form a roll.

[0071] Preferably, the plastic film in the form of a half-sheath is obtained from a plastic film in the form of a sheath, in particular by cutting the sheath along a cutting line extending along the longitudinal axis of the sheath.

[0072] In one embodiment, the process comprises, before step a), the steps of: - have a plastic film in the form of a sleeve, then - cut the sheath along a cutting line extending along the longitudinal axis of the sheath, so as to form two plastic films in the form of a half-sheath.

[0073] In this embodiment example, the plastic film in the form of a half-sheath from step a) is one of the two plastic films in the form of a half-sheath obtained after the sheath cutting step.

[0074] In this embodiment, the sheath cutting step can allow the creation of two free edges on each of the two plastic films in the form of half-sheaths obtained.

[0075] Preferably, the plastic film in the form of a sheath has two parallel fold lines extending along the longitudinal axis of the sheath.

[0076] The cutting line is located between the two fold lines, preferably halfway between the two fold lines.

[0077] Preferably, the cutting line and the two fold lines are parallel to each other.

[0078] Preferably, the plastic film in the form of a sleeve is wound around an axis perpendicular to the cutting line so as to form a roll.

[0079] In one embodiment, the process comprises, between steps a) and b), the step consisting of: - to create a print on the plastic film in the form of a half-sheath.

[0080] The print may include one or more alphanumeric characters and / or one or more logos.

[0081] Preferably, the step of producing a print is carried out in a marked manner.

[0082] For example, a cylinder is used around which the garbage bag is wound, the perimeter of the base of the cylinder being equal to the width of the garbage bag. Thus, when the cylinder makes one turn, this corresponds to the impression of a garbage bag.

[0083] In one embodiment, the process comprises, after step e), the step of: f) make at least one pre-cut along the first lateral weld line and / or the second lateral weld line.

[0084] Step f) can make it easier to cut between 2 adjacent garbage bags, and in particular to cut the detachable link between 2 adjacent garbage bags. Brief description of the figures

[0085] The following description, with reference to the accompanying drawings, given by way of non-limiting examples, will clearly explain what the invention consists of and how it can be implemented. In the accompanying figures:

[0086] [Fig-1] Fig. 1 represents, schematically and in perspective, an example of garbage bag with detachable tie according to the invention;

[0087] [Fig.2] Fig.2 represents, schematically and in perspective, another example of a garbage bag with a detachable tie according to the invention;

[0088] [Fig.3] The [Fig.3] represents another view of the [Fig.2];

[0089] [Fig.4] Fig.4 shows a front view of the garbage bag with detachable tie [Fig.2];

[0090] [Fig.5] The [Fig.5] represents a section along the VV plane of the [Fig.4];

[0091] [Fig.6] The [Fig.6] represents a section along plane VLVI of the [Fig.4];

[0092] [Fig.7] The [Fig.7] represents a section along plane VILVII of the [Fig.4]. Description of method(s) of implementation

[0093] In the figures, and unless otherwise specified, identical elements shall bear the same reference symbols.

[0094] An example of a garbage bag 1 with a detachable tie according to the invention is shown in [Fig. 1].

[0095] The garbage bag 1 contains: a first portion 2 of a plastic film and a second portion 3 of a plastic film, the first portion 2 of plastic film and the second portion 3 of plastic film overlapping, in particular totally, and being welded to each other along two lateral weld lines 4, 5, in particular parallel, so as to form two lateral edges 6, 7, in particular parallel, of the garbage bag 1, - an opening 8, - a bottom 9, opposite the mouth 8, - a detachable link 10 welded to the first portion 2 of plastic film and / or to the second portion 3 of plastic film at the level of at least one attachment area 11 corresponding to a portion of at least one of the two lateral weld lines 4,5.

[0096] In the example illustrated in [Fig.1], the detachable link 10 has one end welded at the attachment area 11 and a free end 12.

[0097] In this example, the detachable tie 10 extends between the first portion 2 of plastic film and the second portion 3 of plastic film. The detachable tie 10 is thus positioned inside the garbage bag 1.

[0098] In this example, the mouthpiece 8 has two free edges 13, 14.

[0099] As illustrated in [Fig.1], the attachment area 11 is located at the upper third of the height of the garbage bag 1, and therefore in the upper part of the garbage bag 1.

[0100] Another example of a garbage bag 1 with a detachable tie according to the invention is shown in figures 2 to 4.

[0101] In the example illustrated in Figures 2 to 4, the detachable link 10 is welded to the first portion 2 of plastic film and / or to the second portion 3 of plastic film at two attachment areas 11, 15 corresponding to a portion of each of the two lateral weld lines 4, 5, so as to extend between the two lateral weld lines 4, 5.

[0102] As illustrated in figures 2 to 4, the attachment areas 11,15 are located at the upper third of the height of the garbage bag 1, and therefore in the upper part of the garbage bag 1.

[0103] As illustrated in [Fig.4], the detachable link 10 has a width 1 and a length L.

[0104] The width 1 of the detachable link 10 is preferably less than or equal to 10 mm, preferably less than or equal to 8 mm, more preferably less than or equal to 7 mm, even more preferably less than or equal to 6 mm, or even less than or equal to 5 mm.

[0105] The length L of the detachable link 10 is preferably equal to the width of the garbage bag, i.e. equal to the distance between the lateral edges 6,7 of the garbage bag.

[0106] Figures 5, 6 and 7 are sections along planes VV, VLVI and VILVII, respectively, of [Fig.4].

[0107] As illustrated in [Fig.7], the bottom 9 of the garbage bag 1 is devoid of a bottom weld.

[0108] Indeed, the first portion 2 of plastic film and the second portion 3 of plastic film are defined by the same plastic film, this plastic film being folded over itself along a fold line 90 so that the first portion 2 of plastic film and the second portion 3 of plastic film are on either side of the fold line 90, the fold line 90 then constituting the bottom 9 of the garbage bag 1.

Claims

Demands

1. Garbage bag (1) with detachable tie (10) comprising: - a first portion (2) of a plastic film and a second portion (3) of a plastic film, the first portion (2) of plastic film and the second portion (3) of plastic film overlapping, in particular totally, and being welded to each other along two lateral weld lines (4, 5), in particular parallel, so as to form two lateral edges (6, 7), in particular parallel, of the garbage bag (1), - an opening (8), - a base (9), opposite the opening (8), - a detachable tie (10) welded to the first portion (2) of plastic film and / or to the second portion (3) of plastic film at the level of at least one attachment area (11, 15) corresponding to a portion of at least one of the two lateral weld lines (4, 5).

2. Garbage bag (1) according to claim 1, the detachable tie (10) being welded to the first portion (2) of plastic film and / or to the second portion (3) of plastic film at two attachment areas (11, 15) corresponding to a portion of each of the two lateral weld lines (4, 5), so as to extend between the two lateral weld lines (4, 5).

3. Garbage bag (1) according to claim 1 or 2, the detachable link (10) extending between the first portion (2) of plastic film and the second portion (3) of plastic film.

4. Garbage bag (1) according to any one of the preceding claims, the attachment area(s) (11, 15) being located at the upper third, preferably at the upper quarter, of the height of the garbage bag (1).

5. Garbage bag (1) according to any one of claims 1 to 4, the mouth (8) being without a hem.

6. Garbage bag (1) according to any one of claims 1 to 4, the mouth (8) having a hem on each of the first portion (2) of plastic film and the second portion (3) of plastic film.

7. Garbage bag (1) according to claim 6, the hems having a height less than or equal to 10 cm, preferably less than or equal to 7 cm, more preferably less than or equal to 6 cm,

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18. more preferably less than or equal to 5 cm, or even less than or equal to 4 cm, for example between 2 cm and 4 cm. Garbage bag (1) according to claim 6 or 7, the hems being made towards the inside of the garbage bag (1). Garbage bag according to claim 6 or 7, the hems being made towards the outside of the garbage bag (1). Garbage bag (1) according to any one of the preceding claims, the bottom (9) of the garbage bag (1) being devoid of a bottom weld. Garbage bag (1) according to any one of the preceding claims, the first portion (2) of plastic film and the second portion (3) of plastic film being defined by the same plastic film. Garbage bag (1) according to claim 11, said plastic film being folded over itself along a fold line (90) so that the first portion (2) of plastic film and the second portion (3) of plastic film are on either side of the fold line (90). Garbage bag (1) according to claim 12, the fold line (90) constituting the bottom (9) of the garbage bag (1). Garbage bag (1) according to any one of the preceding claims, the detachable tie (10) having a width (1) less than or equal to 10 mm, preferably less than or equal to 8 mm, more preferably less than or equal to 7 mm, even more preferably less than or equal to 6 mm, or even less than or equal to 5 mm. Garbage bag (1) according to any one of the preceding claims, the detachable tie (10) having a length (L) equal to the width of the garbage bag (1). Roll of garbage bags (1) with detachable tie (10) according to any one of the preceding claims. Garbage bag roll (1) according to claim 16, the garbage bags (1) being pre-cut and wound around an axis parallel to the lateral weld lines (4, 5) of the garbage bags (1) so as to form a continuous roll of pre-cut garbage bags (1). A roll of garbage bags (1) according to claim 16, the garbage bags (1) being detached from each other and wound around an axis parallel to the lateral weld lines (4, 5) of the garbage bags (1) so that the garbage bags (1) overlap within the roll.

19. A method for manufacturing a garbage bag (1) with a detachable tie (10) according to any one of claims 1 to 15, the method comprising the steps of: a) having a plastic film in the form of a half-sheath, the plastic film having: - a fold line, - a first portion and a second portion, separated by the fold line, the plastic film being folded back on itself along the fold line so that the first portion and the second portion overlap, in particular completely, b) positioning the detachable tie between the first portion and the second portion of the plastic film at a first lateral weld line, preferably perpendicular to the fold line of the plastic film, c) making a weld along the first lateral weld line so as to, on the one hand, weld the detachable tie to the first portion and the second portion, and on the other hand,d) weld the first portion to the second portion, thus forming a first lateral edge of the garbage bag; d) extend the detachable tie from the first lateral weld line to a second lateral weld line, preferably separate from and parallel to the first lateral weld line, between the first and second portions of the plastic film, preferably in a direction parallel to the fold line; e) perform a weld along the second lateral weld line so as to, on the one hand, weld the detachable tie to the first and second portions, and on the other hand, weld the first portion to the second portion, thus forming a second lateral edge of the garbage bag.

Images