Packaging bags for absorbent articles

Abstract

To provide a packaging bag for an absorbent article which has a grip part with a small area and inconspicuous and capable of being held by a woman with one hand, even when a raw material, a content, a manufacturing process, etc. are unchanged from a conventional packaging bag and the packaging bag has a large size.SOLUTION: A packaging bag 1 for a gusset-type absorbent article has a substantially rectangular cylinder shape in which both edges of a packaging base material 2 are hermetically connected, has a front surface part, left and right side surface parts and a rear surface part formed thereon, has a bottom surface part formed by folding a lower part of a substantially rectangular cylinder, and is formed in a three-dimensional shape. The packaging bag 1 for the absorbent article is characterized in that a grip part 10 having a fold structure is formed so as to circle around in a direction substantially parallel to the bottom surface part over the front surface part, the left and right side surface parts and the rear surface part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a packaging bag for absorbent articles having a grip portion. [Background technology]

[0002] BACKGROUND ART Packaging bags with gussets (also called gussets) have been conventionally known as packaging bags for absorbent articles.

[0003] Light incontinence pads are generally packaged in simple gusset-shaped bags. Generally, light incontinence pads are small in size and pack size is relatively small, so they have been made in a simple shape without handles.

[0004] However, in recent years, the number of large-capacity packs has increased, and as a result, pack sizes have also become larger. For these large packs, the simple rectangular shape without handles makes them difficult to carry. For this reason, handles are often attached to products with large pack sizes, such as adult diapers and baby diapers.

[0005] As an invention relating to the manufacturing process of conventional type gusseted packaging bags, for example, Patent Document 1 discloses a bag making device comprising: a conveying means 3 that conveys a strip-shaped tubular body 2 made of thermoplastic resin in the longitudinal direction and positions it at a predetermined position; a fusing means 4 that fuses the tubular body in the width direction at a predetermined distance from the tip opening 2a of the tubular body 2; a cutting means 5 that cuts the tubular body in the width direction slightly behind the end portion fused by the fusing means 4 in the conveying direction of the tubular body; and a separating means 6 that is arranged between the fusing means 4 and the cutting means 5 and separates a separation portion 20 having a fused end portion A and a cut end portion B at both ends. Furthermore, as an invention relating to a packaging bag with a handle, Patent Document 2 discloses a packaging bag 1 that is substantially hexahedral in shape and has a peripheral surface consisting of front and rear surfaces 3, 4 and both side surfaces 2, as well as top and bottom surfaces 5, 6, and has a size confirmation section 10 that displays the range of dimensions that will fit the part where the absorbent article will be worn in actual size, and is provided so that it can be separated from the surrounding parts by perforations 11.The invention also discloses a form in which an upper end 7, which is formed by sealing the upper and lower edges and serves as a handle, has a handle hole 9 in the left-right center for passing a hand through in the front and back direction, and a form in which a sheet-like plastic film is folded in half and this crease 5c is folded inward to form a gusset, and both sides are sealed to form a top-folded gusset bag, and ribs 32 are formed on the top surface 5 that extend from the vertical surfaces (both side surfaces 2, 2 and front and rear surfaces 3, 4), and both ends of carrying loops 30, 30 are attached to the front and rear ribs 32, 32 by an appropriate joining means such as welding. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 09-039916 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-269622 Summary of the Invention [Problem to be solved by the invention]

[0007] However, although packaging bags with handle holes such as those described in Patent Document 2 are easy to manufacture, they have the drawback that the area of ​​the handle is too large for a small package, making it easy for others to notice that a large diaper has been purchased.

[0008] In addition, packaging bags with attached carrying loops, such as those described in the same Patent Document 2, have the disadvantage that they are difficult to manufacture because they require the attachment of a handle made of a material different from the packaging film to the packaging bag after gusset packaging.

[0009] The present invention has been made in view of the above circumstances, and aims to provide a packaging bag for absorbent articles which is the same in material, contents, manufacturing process, etc. as conventional packaging bags, and which has a handle that is small and inconspicuous even when the packaging bag is large, so that a woman can hold it with one hand. [Means for solving the problem]

[0010] The inventors have conducted extensive research and have found that by forming a pleated grip portion in a gusset-type packaging bag for absorbent articles that extends all the way around the front, left and right side portions, and rear portion in a direction substantially parallel to the bottom portion, it is possible to produce a packaging bag for absorbent articles that is the same in material, contents, manufacturing process, etc. as conventional packaging bags, and that has a small and inconspicuous handle area even for large packaging bags, allowing a woman to hold it in one hand.

[0011] (1) A first aspect of the present invention is a gusset-type packaging bag for absorbent goods, which is a roughly rectangular tube with both end edges of the packaging base material sealed and connected, has a front surface, left and right side surfaces, and a rear surface, and is made into a three-dimensional bag shape by folding the lower part of the roughly rectangular tube to form a bottom surface, and is characterized in that a gripping portion with a pleated structure is formed around the front surface, the left and right side surfaces, and the rear surface in a direction roughly parallel to the bottom surface.

[0012] (2) A second aspect of the present invention is a packaging bag for absorbent articles as described in (1), characterized in that the packaging substrate is made of a film or a paper substrate, the gripping portion includes an overlapping portion in which a part of the film or paper substrate is folded on the inner surface so that it protrudes toward the bottom of the packaging bag, and a joint portion inside the overlapping portion that bonds the contacting surfaces of the film or paper substrate together, and the joint portion makes the pleated structure unreleasable. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a packaging bag for absorbent articles that is the same as conventional packaging bags in terms of material, contents, manufacturing process, etc., and that has a handle that is small and inconspicuous even when the packaging bag is large, so that it can be held by a woman in one hand. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is an overall perspective view of a packaging bag for absorbent articles according to an embodiment of the present invention. [Figure 2] 3 is a cross-sectional view of a pleat structure in a grip portion of the packaging bag for absorbent articles according to the present embodiment. FIG. [Figure 3] 3A to 3C are diagrams showing a process of forming a pleated structure in the production of a packaging bag for absorbent articles according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, a mode for carrying out the present invention (hereinafter simply referred to as "the present embodiment") will be described in detail. The following present embodiment is an example for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be carried out by appropriately modifying it within the scope of its gist.

[0016] In the drawings, the same elements are denoted by the same reference numerals, and redundant explanations will be omitted. Furthermore, unless otherwise specified, the positional relationships, such as up, down, left, and right, are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to those shown in the drawings.

[0017] <Packaging bags for absorbent articles> 1 is a perspective view of the entire packaging bag 1 for absorbent articles according to this embodiment. The packaging bag 1 for absorbent articles is a gusset-type packaging bag that is made into a three-dimensional shape by hermetically connecting both end edges of a packaging base material 2 and having a front surface, left and right side surfaces, and a rear surface, and by folding the lower part of the approximately rectangular tube to form a bottom surface. The dimensions of the packaging bag 1 for absorbent articles are not particularly limited as they vary depending on the size of the absorbent articles to be packaged, but it is preferable that the length of one side at the bottom be 70 mm or more and 300 mm or less, and that the height from the bottom be 120 mm or more and 300 mm or less.

[0018] The packaging substrate 2 is preferably made of a film or paper substrate. The film may be made of polyethylene, polypropylene, polystyrene, polyester, or polyethylene terephthalate.

[0019] The paper base material is produced using wood pulp as the main raw material. Examples of pulp that can be used include softwood kraft pulp, hardwood kraft pulp, groundwood pulp, thermomechanical pulp, chemithermomechanical pulp, and recycled paper pulp such as that used in newspapers, flyers, plain magazines, coated magazines, thermal recording paper, pressure-sensitive recording paper, construction paper, colored wood-free paper, copy paper, computer output paper, and mixtures of these recycled paper. These pulps may be used singly or in any combination ratio.

[0020] Furthermore, it is preferable that a top heat seal 20, which is a gusset package, is formed on the top surface of the packaging bag 1 for absorbent articles, as shown in Fig. 1. Similarly, it is preferable that the bottom surface of the packaging bag 1 for absorbent articles is also sealed with a heat seal after the lower part of the approximately square tube is folded (not shown). The process of forming the top heat seal 20 will be described later.

[0021] The absorbent articles to be packaged in the packaging bag 1 for absorbent articles are not particularly limited as long as they are of the type that are normally sold in multiple packages, such as light incontinence products and urine absorption pads. In addition, there are no particular limitations on the state in which the individual packaged absorbent articles are packaged, such as folded in half, folded in four, individually packaged, etc.

[0022] (gripping part) 1, the packaging bag 1 for absorbent articles in this embodiment has a grip portion 10 with a pleated structure formed all the way around the front, left and right side surfaces, and rear surface in a direction approximately parallel to the bottom surface. By forming the grip portion 10, even if the entire bag has large dimensions, the area of ​​the grip portion 10 is small and inconspicuous, and by hooking a finger into the pleated structure of the grip portion 10, a packaging bag 1 for absorbent articles can be obtained that can be held in one hand by a woman. The length of the pleated structure of the gripping portion 10 that protrudes toward the bottom surface (height dimension of the pleated structure) is preferably 15 mm or more and 75 mm or less, and more preferably 30 mm or more and 50 mm or less.

[0023] 2, the gripping portion 10 preferably includes an overlapping portion 11 in which a portion of the packaging substrate 2 is folded inward so as to protrude toward the bottom of the packaging bag 1 for absorbent articles, and a joint portion 12 that bonds the contacting surfaces of the packaging substrate 2 together inside the overlapping portion 11, and the joint portion 12 preferably prevents the pleated structure of the gripping portion 10 from being released. By providing the joint portion 12, for example, by hooking one finger on the gripping portion 10 and holding the packaging bag 1 for absorbent articles, the pleated structure will not release, and the bag can be carried with one finger even if a large force is applied to the gripping portion 10. The means for joining the joints 12 is not particularly limited as long as it is a means commonly used for bonding films or paper substrates, such as heat sealing or a hot melt adhesive. Although it is preferable that only the base portions of the pleated structure as shown in Fig. 2 are joined at the joints 12, only the tip portions of the pleated structure may be joined, or the entire pleated structure may be joined. Furthermore, it is preferable that the joints 12 are joined all around the front, left and right side surfaces, and rear surface of the packaging bag 1 for absorbent articles, but they may be joined only partially (for example, joined every 3 cm in the circumferential direction). Furthermore, the pleated structure itself may be joined (not shown) to the surface of the front, left and right side surfaces, or rear surface of the packaging bag 1 for absorbent articles (i.e., the surface of the packaging base material 2 shown in FIG. 2). However, if the pleated structure is joined all around the circumference, there will be no space for fingers to insert, and it will no longer function as the gripping portion 10. Therefore, when joining this portion, it is preferable that only a portion of the pleated structure is joined. Note that the joining of the pleated structure to the surface of the packaging base material 2 may be performed in combination with the above-mentioned joints 12, or only this portion may be joined without the joints 12.

[0024] <Packaging process> The packaging bag 1 for absorbent articles in this embodiment is a gusset-type packaging bag (gusset packaging). Gusset packaging is a packaging format in which the packaging substrate is overlapped at both widthwise ends with the inner surfaces facing each other so as to encase the packaged item placed on or below a sheet-like packaging substrate, and this overlapping portion is formed into a cylindrical or rectangular tube by heat sealing or the like, and both ends of the bottom or mouth portion are folded inward to match the length (height) of the bag to create a gusset, which is then sealed horizontally with a heat seal (top heat seal 20) or the like, and this sealed portion is then cut into individual bags. This gusset packaging can be performed using known equipment. The packaging bag 1 for absorbent articles in this embodiment does not change from the packaging form of conventional packaging bags in terms of the material of the packaging base material 2 used, the way (direction, etc.) and amount of absorbent articles to be placed inside, the material and thickness of the heat-sealed part after filling, the dimensions of the finished packaging bag, etc. Therefore, the packaging (packing) process can be carried out using conventional equipment.

[0025] In the above packaging process, the process of forming the pleated structure of the grip portion 10 in the packaging base material 2 is carried out as follows. At the stage of sending the sheet-like packaging substrate 2 in Figure 3 to the packaging process, as shown in Figure 3(a), there are front feed rollers 21 and rear feed rollers 22 that send the packaging substrate 2. At this time, if the front feed rollers 21 are temporarily stopped and the rear feed rollers 22 are kept operating as shown in Figure 3(b), a difference in the feed speed of the packaging substrate 2 in the front and rear directions occurs, and as shown in Figure 3(c), a gripping portion 10 with a pleated structure is formed. After that, the sheet can be sent to the gusset packaging process described above. At this time, it is also preferable to provide the above-mentioned joints 12 at the same time so that the created pleat structure does not unravel.

[0026] Although the present invention has been described above using embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above embodiments. Furthermore, it is clear from the claims that such modifications and improvements can also be included within the technical scope of the present invention. [Explanation of symbols]

[0027] 1. Packaging bags for absorbent articles 2 Packaging base material 10 Gripping part 11 Superimposed section 12 Joint 20 Top heat seal 21 Front feed roller 22 Rear feed roller

Claims

1. A gusset-type packaging bag for absorbent articles, which is a substantially rectangular tube with both end edges of a packaging base sealed and connected, with a front surface, left and right side surfaces, and a rear surface formed, with the bottom surface formed by folding the bottom of the substantially rectangular tube, and a top surface formed at the top of the substantially rectangular tube, and is made into a three-dimensional bag shape, a grip portion having a pleated structure that can be hooked with fingers is formed around the front surface, the left and right side surface portions, and the rear surface portion in a direction substantially parallel to the bottom surface portion; A packaging bag for absorbent articles, characterized in that only a portion of the pleated structure in the gripping portion is joined to the surface of the front portion, the left and right side portions, or the rear portion.

2. A gusset-type packaging bag for absorbent articles, which is a roughly square tube with both end edges of the packaging base material sealed and connected, with a front surface, left and right side surfaces, and a rear surface formed, with the bottom surface formed by folding the bottom of the roughly square tube, and a top surface formed at the top of the roughly square tube, and is made into a three-dimensional bag shape, a grip portion having a pleated structure that can be hooked with fingers is formed around the front surface, the left and right side surface portions, and the rear surface portion in a direction substantially parallel to the bottom surface portion; The packaging substrate is made of a film or paper substrate, The gripping portion includes an overlapping portion in which a part of the film or paper base material is folded on the inner surface so that the part of the film or paper base material protrudes toward the bottom surface of the packaging bag, and a joining portion that bonds the contacting surfaces of the film or paper base material together inside the overlapping portion, The pleat structure is configured to be unreleasable by the joint portion, A packaging bag for absorbent articles, characterized in that the joint portion is provided only at the base portion of the pleated structure.

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