A PACKAGE COMPRISING A BAG AND A STACK OF ABSORBENT ARTICLES
20250108968 · 2025-04-03
Assignee
Inventors
Cpc classification
B65D75/5827
PERFORMING OPERATIONS; TRANSPORTING
B65D75/12
PERFORMING OPERATIONS; TRANSPORTING
International classification
B65D75/12
PERFORMING OPERATIONS; TRANSPORTING
B65D75/58
PERFORMING OPERATIONS; TRANSPORTING
B65D75/08
PERFORMING OPERATIONS; TRANSPORTING
Abstract
The disclosure relates to a package including a bag and at least one stack of absorbent articles arranged in the bag, the bag being made of a paper material, wherein the bag has a sealed bottom, a sealed top, and a peripheral wall extending between the bottom and the top, wherein the top is formed by adhering inner surface portions of the peripheral wall to one another. The bag includes an adhesion layer provided on the inner surface portions of the peripheral wall, the adhesion layer being used for adhering the inner surface portions to one another, wherein the adhesion layer has a basis weight of 28-45 g/m.sup.2.
Claims
1. A package comprising a bag and at least one stack of absorbent articles arranged in the bag, the bag being made of a paper material, wherein the bag has a sealed bottom, a sealed top, and a peripheral wall extending between the bottom and the top, wherein the top has been formed by adhering inner surface top portions of the peripheral wall to one another, wherein the bag comprises an adhesion layer provided on the inner surface portions of the peripheral wall, said adhesion layer being used for adhering said inner surface portions to one another, wherein the adhesion layer has a basis weight within a range of 28-45 g/m.sup.2.
2. The package according to claim 1, wherein the basis weight of the adhesion layer is within a range of 30-40 g/m.sup.2.
3. The package according to claim 1, wherein a ratio between a basis weight of the paper material and the basis weight of the adhesion layer is within a range of 1.6-2.5.
4. The package according to claim 1, wherein the adhesion layer is a hot-melt adhesion layer.
5. The package according to claim 1, wherein the paper material has a basis weight between 50 and 90 g/m.sup.2 as measured according to the ISO 536 standard.
6. The package according to claim 1, wherein the peripheral wall-comprises a front wall, an opposite rear wall, and first and second side walls connecting the front and rear walls, wherein the sealed top has been formed by adhering the inner surface top portions of the peripheral wall to one another such that: a first top portion of the front wall is adhered to an adjacent first top portion of the second side wall to form a first adhered portion, a second top portion of the front wall is adhered to an adjacent first top portion of the first side wall to form a second adhered portion, a first top portion of the rear wall is adhered to an adjacent second top portion of the second side wall to form a third adhered portion, a second top portion of the rear wall is adhered to an adjacent second top portion of the first side wall to form a fourth adhered portion, and a third top portion of the front wall is adhered to a third top portion of the rear wall to form a fifth adhered portion.
7. The package according to claim 6, wherein the first adhered portion has a first length, the second adhered portion has a second length, the third adhered portion has a third length, the fourth adhered portion has a fourth length, and the fifth adhered portion has a fifth length, wherein the fifth length is smaller than each one of the first, second, third, and fourth lengths.
8. The package according to claim 7, wherein the fifth length is less than 75% of a shortest one of the first, second, third, and fourth lengths.
9. The package according to claim 7, wherein the fifth length is within a range of 1-30 mm.
10. The package according to claim 7, wherein the first, second, third, and fourth lengths are equal.
11. The package according to claim 6, wherein a stacking direction of each one of the at least one stack of absorbent articles is perpendicular to the first and second side walls of the bag.
12. The package according to claim 6, wherein the peripheral wall of the bag comprises an overlap seam extending from the bottom of the bag to the top of the bag, wherein the overlap seam is formed at the front wall or at the rear wall of the bag.
13. The package according to claim 1, wherein the bag comprises at least one weakening line for opening the bag.
14. The package according to claim 13, wherein the at least one weakening line comprises a perforation line or a score line.
15. The package according to claim 13, wherein the at least one weakening line is formed in or adjacent to at least one of said adhered portions.
16. The package according to claim 1, wherein the bag comprises at least one notch for tearing open the bag.
17. The package according to claim 16, wherein the at least one notch is formed in or adjacent to at least one of said adhered portions.
18. The package according to claim 1, wherein each one of the at least one stack of absorbent articles comprises a plurality of folded and individually wrapped absorbent articles.
19. The package according to claim 18, wherein a wrapper of each individually wrapped absorbent article comprises a sealed wrapper portion facing upward within the bag.
20. The package according to claim 1, wherein the sealed bottom of the bag is formed by folding and adhering a portion of the paper material to form a flat and rectangular bottom.
21. The package according to claim 1, wherein the bag comprises an air displacement hole at or close to the bottom of the bag for allowing air to escape from the bag.
22. The package according to claim 1, wherein the at least one stack of absorbent articles comprises two stacks of absorbent articles.
23. The package according to claim 1, wherein the bag is opaque and the absorbent articles, such as a wrapper of individually packed absorbent articles, cannot be seen through the bag.
24. The package according to claim 6, wherein the at least one weakening line is formed in or adjacent to at least one of said adhered portions.
25. The package according to claim 6, wherein the at least one notch is formed in or adjacent to at least one of said adhered portions.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0056] Various aspects of the disclosure will hereinafter be described in conjunction with the appended drawings to illustrate and not to limit the disclosure, wherein like designations denote like elements, and variations of the described aspects are not restricted to the specifically shown embodiments but are applicable on other variations of the disclosure.
[0057] A package 1 according to embodiments of the disclosure is schematically illustrated in
[0058] The bag 100 is formed from a single sheet 110 of rectangular paper as illustrated in
[0059] The sealed top 102 of the bag 100 has been formed by adhering inner surface top portions of the peripheral wall 103, i.e., of the paper sheet 110, to one another so as to form wings, or fins. The inner surface top portions are illustrated in
[0060] The first top portion 113 of the front wall 104 is adhered to the adjacent first top portion 123 of the second side wall 107 to form a first adhered portion 111 having a first length L.sub.1 as shown in
[0061] In the illustrated embodiments, the first length L.sub.1, the second length L.sub.2, the third length L.sub.3, and the fourth length La are all equal, within manufacturing tolerances. The fifth length L.sub.5 is herein less than less than 75% of each one of the first length L.sub.1, the second length L.sub.2, the third length L.sub.3, and the fourth length L.sub.4, preferably less than 65%, or less than 60%. The first length L.sub.1, the second length L.sub.2, the third length L.sub.3, and the fourth length L.sub.4 may be between 30-50 mm, preferably 35-45 mm. The fifth length L.sub.5 may be 1-30 mm, more preferably 3-25 mm. A total length L.sub.tot of the front wall 104 and/or back wall 105 of the bag 100, as measured between the side walls 106, 107 at a bottom of the package 1, is essentially equal to the sum of the first length L.sub.1, the second length L.sub.2, and the fifth length L.sub.5 and/or the sum of the third length L.sub.3, the fourth length L.sub.4 and the fifth length L.sub.5.
[0062] In the illustrated embodiment, the first length L.sub.1 is 39 mm and the fifth length L.sub.5 is 22 mm, i.e., 56% of the first length L.sub.1. In the illustrated embodiment the bag 100 has a total length L.sub.tot of 100 mm as measured between the side walls 106, 107, and a total width W as measured between the front and rear walls 104, 105 of 78 mm. A filling height H of the bag 100 is in the illustrated embodiment 163 mm.
[0063] In another embodiment, the first length L.sub.1 is 45 mm and the fifth length L.sub.5 is 10 mm, i.e., 22% of first length L.sub.1. The bag 100 has a total length L.sub.tot of 100 mm as measured between the side walls 106, 107, and a total width Was measured between the front and rear walls 104, 105 of 88 mm. A filling height H of the bag 100 is in the illustrated embodiment 165 mm.
[0064] As best seen in
[0065] The bag 100 comprises an adhesion layer 150 provided on the inner surface portions 113, 114, 115, 116, 117, 118, 123, 124, 125, 126 of the peripheral wall 103, as shown in
[0066] The basis weight of the adhesion layer may be determined by weighing a first sample of the sheet 110 on which the adhesion layer 150 is provided, and a second sample of the same size on which no adhesion layer is provided. Alternatively, the adhesion layer may be removed from the first sample, whereafter the first sample is weighed again. A total weight of the adhesion layer provided on the first sample is thereby obtained as the difference in weight between the samples with and without adhesion layer. The weight of the adhesion layer is divided by a surface area of the first sample to obtain the basis weight.
[0067] The adhesion layer 150 can, for example, comprise or consist of a hot melt adhesive. However, the adhesive is not limited to a hot melt adhesive, it may be any kind of adhesive suitable for the application. Other kind of adhesives can be adhesives which can dissolve in water. Such adhesives include starch based adhesives, polyvinyl alcohol based adhesives, and polyethylene oxide based adhesives. If the adhesive is not water-soluble, then water-dispersible adhesives may similarly be utilized. Suitable examples of water dispersible adhesives include thermoplastic elastomer based adhesives and polyvinyl acetate based adhesives. Any suitable pressure sensitive adhesives may also be used.
[0068] The adhesion layer 150 is herein partially provided on the superfluous top portion 109 which is cut away after sealing. The adhesion layer 150 may prior to adhesion, folding and cutting have a width Wad of 30-60 mm as measured in a height direction of the bag 100.
[0069] The sealing at the top 102 of the bag 100 can be accomplished by pressing two seal bars against each other, with the folded top portions 113, 114, 115, 116, 117, 118, 123, 124, 125, 126 of the bag 100 comprising the adhesion layer 150 inserted between the seal bars. Thereby, the hot melt adhesive applied to the inside of the bag 100 melts and the folded top portions 113, 114, 115, 116, 117, 118, 123, 124, 125, 126 attach to each other. The sealing width accomplished by the sealing bars may be 3-10 mm measured in a height direction of the bag 100, more preferably 3-6 mm. After the bag 100 has been cut, the sealing width may be smaller or the same, depending on if the cutting line 108 along which the cut is made is above the seal or not.
[0070] The seal of the packages may have a tensile strength of at least 1 N per 25.4 mm. For example, each of the plurality of seals of the packages of the present disclosure may have a tensile strength of between 1 N per 25.4 mm to about 22 N per 25.4 mm, more preferably from about 3 N per 25.4 mm to about 17 N per 25.4 mm. The tensile strengths of the seals mentioned herein can be determined by the tensile test method described in ASTM F88-21 as modified herein.
[0071] As used herein, a paper material is to be understood as a material produced by pressing together moist fibres, dewatering, and drying the fibres into preferably flexible sheets. The paper material used herein may have a basis weight between 50 and 90 g/m.sup.2 as measured according to the ISO 536 standard. A ratio between the basis weight of the paper material used for the bag 100 and the basis weight of the adhesion layer 150 may be within a range of 1.6-2.5, preferably 1.8-2.2. For example, the paper material may have a basis weight of 70 g/m.sup.2 and the adhesion layer 150, such as the hot-melt adhesion layer, may have a basis weight of approximately 36 g/m.sup.2.
[0072] The paper material may have any one or more of following properties: [0073] a tensile strength measured according to the ISO 1924-3 standard in a machine direction between 4 and 10 kN/m, preferably between 6 and 8 kN/m, and in a cross direction between 2 and 6 kN/m, preferably between 3 and 5 kN/m; [0074] a tear index measured according to the ISO 1974 standard in a machine direction between 8 and 14 mNm.sup.2/g, and in a cross direction between 8 and 15 mNm.sup.2/g; [0075] a tear strength measured according to the ISO 1974 standard in a machine direction between 400 and 1300 mN, and in a cross direction between 450 and 1400 mN, [0076] a stretch measured according to the ISO 1924-3 standard in a machine direction between 1 and 6%, and in a cross direction between 5 and 12%.
[0077] As illustrated in
[0078] The rectangular sheet 110 is in
[0079] The seam portion 127 illustrated in
[0080] The adhesion layer 150 shown in
[0081] The bag 100 may further comprise an air displacement hole (not shown) located at or close to the bottom 101 of the bag 100 for allowing air to escape from the bag 100, such as when loading the pads 300 into the bag 100 and for reducing tension that may arise as the bag 100 is subjected to pressure. The air displacement hole may be located close to an edge between any two adjacent walls. It may preferably be located at one of the side walls 106, 107, adjacent to the bottom 101. It may alternatively be formed as a non-sealed lower portion of the overlap seam 140.
[0082] An example configuration of the bottom 101 is illustrated in
[0083] All external sides of the bag 100 may be covered with a layer of varnish, protecting any printed portions of the bag 100. Printed portions may be provided on the peripheral wall 103 as well as on the top 102 and/or on the bottom label.
[0084] Since the absorbent pads 300 are non-compressed or only slightly compressed, the package 1 has relatively sharp 90 edges. The front and rear walls 104, 105 as well as the first and second side walls 106, 107 are relatively flat. The length L.sub.tot of the package 1 as well as the width W are therefore close to constant along the height H of the package, as can be gleaned from
[0085] Two stacks 201, 202 of folded and individually wrapped absorbent pads 300, such as disposable personal hygiene absorbent pads in the form of incontinent shields, sanitary napkins, panty liners, or the like, are in the illustrated embodiments arranged in the bag 100.
[0086]
[0087] The illustrated absorbent pad 300 is a wing-less incontinent shield that is intended to be adhesively attached to an underwear of a user, for example by means of adhesive that is provided on an outer side of the backsheet for fastening the absorbent pad 300 to said underwear. However, the disclosure is equally applicable to wing-type absorbent pads, where laterally protruding wings are intended to be folded around the edge of the underwear of a user for fastening the absorbent pad 300 to said underwear.
[0088] The liquid permeable topsheet 309 can comprise a nonwoven material, e. g. spunbonded, meltblown, carded, hydroentangled, wetlaid, etc. which can be composed of natural fibres, such as woodpulp or cotton fibres, synthetic fibres, such as polyester, polyethylene, polypropylene, viscose, etc. or from a mixture thereof. The topsheet 309 material may further be composed of tow fibres, porous foams, apertured plastic films etc. The materials suited as topsheet materials should be soft and non-irritating to the skin and be readily penetrated by body fluid, e g urine or menstrual fluid, and display low rewetting properties. The topsheet 309 may comprise weldable fibres for enabling bonding to the underlying sheet by means of welding, such as ultrasonic welding. Alternatively, the topsheet 309 may be bonded to the underlying material with adhesive, or just placed on top of the underlying material.
[0089] The acquisition or distribution layer, if such a layer is used in absorbent pad 300, may comprise a material suitable for bonding to the topsheet 309. For example, if welding technology is used for bonding the topsheet 309 to the acquisition or distribution layer, the material of the acquisition or distribution layer should include at least partly weldable fibres. For example, the weldable fibres may polyethylene fibres coated with a layer of polypropylene. The acquisition or distribution layer may further include pure polyethylene fibres. In a specific example less than 30% of the fibres in the acquisition or distribution layer are polyethylene fibres and more than 70% of the fibres are welding fibres consisting of polyethylene fibres coated with polypropylene.
[0090] The absorbent core may comprise any conventional material suitable for absorbing discharged bodily wastes, such as cellulosic fluff pulp, tissue layers, highly absorbent polymers (superabsorbents), absorbent foam materials including hydrogel-foam material, absorbent nonwoven materials or the like. Similar to above, if welding technology is used for bonding the topsheet 309 directly to the absorbent core, the material of the absorbent core should include at least partly weldable fibres.
[0091] The liquid impermeable backsheet may comprise a thin plastic film, e. g. a polyethylene or polypropylene film, a nonwoven material coated with a liquid impervious material, a hydrophobic nonwoven material which resists liquid penetration or laminates of plastic films and nonwoven materials. The backsheet material may be breathable so as to allow vapour to escape from the absorbent core, while still preventing liquids from passing through the backsheet material.
[0092] In one embodiment, the absorbent pad 300 may be an absorbent pad sold commercially by Essity Hygiene and Health AB under the name TENA discreet Mini. The package 1 may then comprise two stacks 201, 202 with, purely by way of example, 8 or 10 absorbent pads 300 in each stack 201, 202.
[0093] In another embodiment, the absorbent pad 300 may be an absorbent pad sold commercially by Essity Hygiene and Health AB under the name TENA discreet Mini Plus.
[0094] The package 1 may then comprise two stacks 201, 202 with, purely by way of example, 8 or 10 absorbent pads 300 in each stack 201, 202.
[0095] Each absorbent pad 300 is in the illustrated embodiment provided within an individual wrapper 301, such as a thin sheet or similar, to which the absorbent pad 300 is releasably adhered before use. The sheet material for forming the wrapper 301 may be a single ply sheet of any suitable material known to the person skilled in the art, such as polyethylene or polypropylene film or nonwoven or paper. The wrapper 301 may also be a laminate comprising at least two distinct layers. Laminates suitable for packaging of hygiene articles are assumed to be known to the person skilled in the art and are not in any way limiting for the present disclosure.
[0096] The absorbent pad 300 attached to the individual wrapper 301 is herein folded twice to form three folding layers, with a front portion 303 overlapping a rear portion 304, both the front and rear portions 303, 304 overlapping a centre portion 305. In the embodiment illustrated in
[0097] The sealed wrap portions 302 may be sealed by an adhesive, for example a resealable adhesive or a non-resealable adhesive and/or sealed by means of ultrasonic welding or heat welding. By the term resealable adhesive is meant an adhesive that provides a non-permanent adhesive bond between two adherent surfaces, i.e. a bond that may be broken by applying a pulling force to the adherent, and recreated by applying a pressing force to the adherent. The resealable adhesive may be a pressure-sensitive hotmelt adhesive.
[0098] A stacking direction SD of each stack 201, 202 within the bag 100 is perpendicular to the first and second side walls 106, 107 of the bag 100, see
[0099] To manufacture a package 1 according to the disclosure, the at least one stack 201, 202 of absorbent articles 300 is arranged in a bag 100 as described above, wherein the bag has a closed bottom 101, an open top 102, and a peripheral wall 103 between the bottom 101 and the top 102. The inner surface top portions of the peripheral wall 103 provided with the adhesion layer 150 are thereafter adhered to one another as described above to obtain a closed top 102.
[0100] It will be appreciated that the above description is merely exemplary in nature and is not intended to limit the present disclosure, its application or uses. While specific examples have been described in the specification and illustrated in the drawings, it will be understood by those of ordinary skill in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present disclosure as defined in the claims, the mixing and matching of features, elements and/or functions between various examples is expressly contemplated herein so that one of ordinary skill in the art would appreciate from this disclosure that features, elements and/or functions of one example may be incorporated into another example as appropriate, unless described otherwise, above. Moreover, many modifications may be made to adapt a particular situation or material to the teachings of the present disclosure without departing from the essential scope thereof. Therefore, it is intended that the present disclosure not be limited to the particular examples illustrated by the drawings and described in the, but that the scope of the present disclosure will include any embodiments falling within the foregoing description and the appended claims.
[0101] Reference signs mentioned in the claims should not be seen as limiting the extent of the matter protected by the claims, and their sole function is to make claims easier to understand.