JP4020442B2 - Sanitary napkin packaging structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging structure for the sanitary napkin to individually packaged by packaging the sanitary napkin, in particular, is easy to open closed, excellent in productivity, relates to a packaging structure for the sanitary napkin.
[0002]
[Prior art and problems to be solved by the invention]
Examples of the absorbent article include a sanitary napkin and the like, and the sanitary napkin usually has an adhesive layer for fixing the napkin to shorts and preventing displacement during use. The sanitary napkin is stored as a packaging structure individually packaged with a packaging material at the time of storage, and is used by peeling off the packaging material and taking out the sanitary napkin at the time of use.
[0003]
However, the conventional packaging structure has a problem that when the packaging material is peeled off, it is difficult to pick up the packaging material and it is difficult to take out the sanitary napkin.
[0004]
Thus, various proposals have been made to facilitate the opening of the packaging material.
For example, Japanese Patent Publication No. 3-176376 proposes a packaging structure in which a tuck seal or a knob having a function similar to that of a tack seal is provided at an opening of a packaging material, and European Patent Publication No. 357000 is proposed. Has proposed a packaging structure in which the opening portion of the packaging material is cut to form a knob, and in Japanese Patent Publication No. 5-507427, a sealing tab is provided on the opening portion of the packaging material. Proposed packaging structures have been proposed.
[0005]
However, as described in the above proposal, when a tab or tab is provided in the opening portion of the packaging material, unnecessary parts must be removed in the packaging material processing step, resulting in a cut loss or a process. There is a problem in that productivity increases and productivity decreases.
Also, when a tack seal is provided, there is a problem in that productivity is reduced because it is necessary to add a process for providing the tack seal.
[0006]
Accordingly, an object of the present invention is easy to open packaging materials, excellent in removability of the sanitary napkin, also without Kattorosu occurs in the manufacturing process, excellent in productivity, packaging structure of the sanitary napkin It is to provide.
[0007]
[Means for Solving the Problems]
As a result of intensive studies to solve the above problems, the present inventors have found that the above object can be achieved by using a packaging material having a convex portion at one end in the longitudinal direction and a concave portion at the other end. I found out.
[0008]
The present invention has been made based on the above findings, and in the packaging structure of a sanitary napkin composed of a sanitary napkin and a packaging material for individually packaging the sanitary napkin, the entire inner surface of the packaging material is peeled off. A convex portion at one end portion in the longitudinal direction, and a concave portion formed so as to be able to be fitted to the convex portion at the other end portion, and the convex portion is embossed. The convex portion has a semi-elliptical or semi-circular shape, and is formed by extending the packaging material. The packaging material is applied to the entire non-skin contact surface of the sanitary napkin. The folding sanitary napkin that is brought into contact with the packaging material is integrally folded with the packaging material, and the longitudinal direction of the sanitary napkin is divided into approximately three equal parts at the front part, the central part, and the rear part. In this order, the rear part and the front part are folded in three on the skin contact surface side of the central part, and the convex And each forms a seal portion of the seal portion and the end portion of the both side edge portions by fastening the side edges and the end of the packaging material without clothed stop the sealing portion of the end portion, said It is formed by heat sealing over the entire area of the end, and the packaging material is individually packaged with the sanitary napkin so that the convex portion is located on the surface of the packaging structure. A sanitary napkin packaging structure is provided.
[0009]
Further, the present invention provides, as a preferable manufacturing method of the sanitary napkin packaging structure , a placing step of placing the sanitary napkin on a continuous sheet of packaging material, and cutting the continuous sheet of packaging material into its width Then, a packaging material having a convex portion at one end in the longitudinal direction and a concave portion formed so as to be able to be fitted to the convex portion at the other end. Wrapping material forming step, embossing step of embossing at least the convex portion, and sanitary napkin is individually packaged with the packaging material so that the convex portion is located on the surface, and a predetermined position is sealed A sanitary napkin packaging structure manufacturing method, comprising: an individual packaging step, wherein the convex portion is embossed in the embossing step simultaneously with the formation of the convex portion in the packaging material forming step. Is a thing
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings, the packaging structure of the physiology napkin of the present invention will be described in detail.
[0011]
Figure 1 is a perspective view showing one embodiment of a packaging structure of the physiology napkin of the present invention, FIG. 2 is a schematic perspective view showing a packaging embodiment according packaging of the sanitary napkin, Fig. 3, Fig. FIG. 4 is a perspective view showing the bottom surface of the sanitary napkin in the packaging structure shown in FIG. 1, and FIG. 4 is a perspective view showing the inner surface of the packaging material in the packaging structure shown in FIG. FIG. 5 is a schematic view showing the main part of the manufacturing process of the sanitary napkin packaging structure of the present invention.
[0012]
Package structure 1 of the sanitary napkin of the present embodiment shown in FIG. 1 is composed of a physiology napkin 10 which is individually packaged packaging material 20.
[0013]
More specifically, the sanitary napkin packaging structure 1 includes a packaging material in which the entire inner surface of the sanitary napkin 10 is peeled off as shown in FIGS. 1 and 2. 20, the sanitary napkin 10 with which the packaging material 20 is abutted is integrated with the packaging material 20, and the longitudinal direction of the sanitary napkin 10 is set to the front portion 13, the center portion 14, and the rear portion 15. In the two bent parts 17 that are divided into approximately three equal parts, the rear part 15 and the front part 13 are in this order, folded in three on the skin contact surface 11 side of the central part 14, and both side edges of the packaging material 20 The part 22 and the end part 23 (parts excluding the convex part 25) are fastened to form the seal parts 2 and 2 ′.
[0014]
The sanitary napkin 10 packaged by the packaging structure of the present invention has a skin contact surface 11 made of a liquid-permeable sheet material and a non-skin contact surface 12 made of a liquid as shown in FIGS. It is a normal sanitary napkin formed of an impermeable sheet material and further having a liquid-retaining absorbent between the skin contact surface 11 and the non-skin contact surface 12. Here, the said front part 13 is a site | part located in the advancing direction side of the sanitary napkin in the production line of a packaging structure.
And as shown in FIG. 3, the strip | belt-shaped adhesion layer 16 is provided in the whole surface (front part, center part, and back part) of the non-skin contact surface 12 of the said sanitary napkin 10, and this adhesion layer 16 is provided. The entire surface is adhered to the inner surface of the packaging material 20 in a detachable manner.
[0015]
The pressure-sensitive adhesive layer 16 is formed by applying a pressure-sensitive adhesive on the non-skin contact surface 12 or by applying it to the peeled packaging material 20 and then transferring it to the non-skin contact surface 12. . As the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer, for example, one having a styrene block polymer, a tackifier and a softener as main components and having a two-phase block structure of a styrene phase and a rubber phase is used.
[0016]
As the packaging material 20, as shown in FIG. 4, the entire inner surface is peeled off (the hatched portion in FIG. 4), and preferably has peelability, and is 5 to 50 μm thick polypropylene, polyester, polyethylene, Preferable examples include polyvinyl alcohol, a non-woven fabric, paper, and a release sheet obtained by peeling the entire inner surface of a packaging material such as a composite material thereof .
In this invention, in order to perform the said peeling process, it can carry out by apply | coating a peeling agent or sticking a peeling tape or a peeling paper etc. to the whole inner surface. As the release agent component of the release treatment agent or release tape, a silicone resin type, a fluorine resin type, or an octadecyl isocyanate type is preferable. In particular, as the release treatment, it is preferable to use a silicone resin-based release material component and apply and heat-dry it or spray it to form a thin film.
Furthermore, a thin polyolefin film or polyester film that has been peeled off and joined to the packaging material by heat or ultrasonic waves has moderate rigidity, is easy to open, and has excellent heat resistance. This is advantageous.
[0017]
Thus, in the sanitary napkin packaging structure 1 of the present embodiment, the packaging material 20 has a convex portion 25 at one end 23 in the longitudinal direction and the other end as shown in FIG. The portion 24 has a concave portion 26 having a shape corresponding to the convex portion 25, and the convex portion 25 is embossed as shown in FIG.
Further, the packaging material 20 is individually packaged with the sanitary napkin 10 so that the convex portion 25 is positioned on the surface of the packaging structure 1.
[0018]
More specifically, the convex portion 25 has a semi-elliptical shape and is provided at a substantially central portion of the edge portion 23. The concave portion 26 is also semi-elliptical and is provided at a substantially central portion of the edge portion 24. The size of the convex portion 25 (concave portion 26) is preferably 5 to 20 mm in width and length.
Moreover, as shown in FIG.1 and FIG.2, the said recessed part 26 is folded inside the packaging structure (between the front part 13 and the center part 14 of the sanitary napkin 10), and the said convex part 25 is the following. It is located on the surface of the packaging structure 1 and forms an opening part 27 of the packaging structure.
Moreover, it is preferable that the apparent thickness of the said convex part 25 which gave the said embossing is 100-200 micrometers, and it is preferable that it is 1.2-5 times the apparent thickness of the part which has not been embossed.
[0019]
As described above, the sanitary napkin packaging structure 1 of the present embodiment has the embossed opening 27, so that the packaging material can be easily opened and the sanitary napkin can be easily taken out. is there.
Moreover, since the said convex part which forms the said opening part is a thing which can be fitted with the said recessed part, and is formed simultaneously with this recessed part so that it may mention later, cut loss etc. do not arise. Therefore, the sanitary napkin packaging structure of the present invention is excellent in productivity.
[0020]
Subsequently, the preferable manufacturing method of the packaging structure 1 of the sanitary napkin of this form is demonstrated.
The preferable manufacturing method of the sanitary napkin packaging structure 1 of the present embodiment includes a placing step of placing the sanitary napkin on a continuous sheet of packaging material, cutting the continuous sheet of packaging material into its width, A packaging material in which a recess is formed at the same time as the formation, a packaging material having a projection at one end in the longitudinal direction and a recess formed at the other end so as to be fitted with the projection is formed. By performing a forming step, an embossing step of embossing at least the convex portion, and an individual packaging step of individually packing the napkin with the packaging material so that the convex portion is located on the surface and sealing a predetermined position Can be implemented.
[0021]
Further, the manufacturing method will be described in detail with reference to FIG. 5. A sanitary napkin packaging structure 1 according to the present embodiment has a continuous sheet 20 ′ of a packaging material whose entire inner surface is peeled as shown in FIG. Adhesive 16 'is applied on top, sanitary napkin 10 is carried in phase with this applied adhesive 16', and sanitary napkin 10 is placed on continuous sheet 20 'of packaging material. Thus, the placing process is performed. At this time, the adhesive material 16 ′ is crimped and transferred to the sanitary napkin 10.
[0022]
Next, the continuous sheet 20 ′ of the packaging material is cut in the width direction to form the convex portions 25 and simultaneously form the concave portions 26, and the packaging material 20 is sequentially formed to perform the packaging material forming step. That is, by the above-described cutting, a concave portion at the other end portion and a convex portion at one end portion are simultaneously formed for separate packaging materials.
Here, the longitudinal direction of the continuous the predetermined position for cutting the sheet 20 ', the position of the packaging material 20 obtained is sized to cover a non-skin contact surface 12 the entire surface of the sanitary napkin down 10 (packaging material 20 There are no particular limitations as long as both end edges are outside the both end edges in the longitudinal direction of the sanitary napkin 10.
[0023]
Further, the embossing process is performed simultaneously with the packaging material forming process to perform the embossing process. That is, by performing the embossing process simultaneously with the cutting in the packaging material forming step, the embossing process is performed on the convex part 25 simultaneously with the formation of the convex part 25.
[0024]
Then, as shown in FIG. 2, the sanitary napkin down 10, the two bent portions 17 thereof, the rear portion 15, on the central portion 14 in the order of the front portion 13 and folded together with the packaging material 20 After the sanitary napkin 10 is individually packaged with the packaging material 20 so that the convex portion 25 is located on the surface, both side edges 22 and end edges 23 of the packaging material 20 are heat-sealed and fixed. The individual packaging process is performed.
[0025]
In addition, the packaging structure of the sanitary napkin of this invention is not limited to the form mentioned above at all, and can be variously changed in the range which does not deviate from the meaning of this invention.
For example, in the embodiment shown in FIGS. 1 to 5 described above, the adhesive layer is described as an example provided on the entire non-skin contact surface of the sanitary napkin, but the present invention is not limited to this.
That is, the number and shape of the adhesive layers are not particularly limited, and can be two or more.
In addition, the sanitary napkin may have a wing shape .
[0026]
The shape of the convex portion (concave portion) has been described in what the semi-elliptical shape, may be a semi-circular shape, for example, can be shaped like shown in Figure 6 (a).
Further, the embossing position is not limited to the above-mentioned convex part, but, for example, as shown in FIG. 6B, the embossing is performed on the end edge part 23 ′ (the hatched portion in FIGS. 6A and 6B). Can also be applied.
[0030]
Furthermore, the manufacturing method of the sanitary napkin packaging structure is not limited to the manufacturing method shown in FIG. 5 described above. For example, when the adhesive layer is formed, an adhesive is applied to the inner surface of the packaging material. The packaging structure of the sanitary napkin can also be manufactured by applying the adhesive directly to the non-skin contact surface of the sanitary napkin without forming the adhesive layer.
[0031]
【The invention's effect】
The packaging structure of the sanitary napkin of the present invention is easy to open the packaging material, excellent in the ability to take out the sanitary napkin , and has excellent productivity without causing cut loss in the manufacturing process.
[Brief description of the drawings]
FIG. 1 is a perspective view showing one embodiment of a packaging structure of the physiology napkin of the present invention.
FIG. 2 is a schematic perspective view showing a form in the middle of folding a sanitary napkin in three.
3 is a perspective view showing the bottom surface of the sanitary napkin in the packaging structure shown in FIG. 1. FIG.
4 is a perspective view of a packaging material in the packaging structure shown in FIG. 1. FIG.
FIG. 5 is a schematic view showing the main part of the manufacturing process of the sanitary napkin packaging structure of the present invention.
6 (a) and 6 (b) are plan views showing other forms of the packaging material used in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Packing structure of sanitary napkin 2,2 'Seal part 10 Sanitary napkin 11 Skin contact surface 12 Non-skin contact surface 13 Front part 14 Center part 15 Back part 16 Adhesive layer 17 Bending part 20 Packaging material 22 Side edge 23 One end 24 The other end 25 Convex part 26 Concave part 27 Unsealed part

Claims (2)

In the packaging structure of a sanitary napkin consisting of a sanitary napkin and a packaging material for individual packaging thereof,
The packaging material has the entire inner surface peeled, has a convex portion at one end in the longitudinal direction thereof, and has a concave portion formed so as to be fitted to the convex portion at the other end. In addition, embossing is given to the convex part,
The convex portion has a semi-elliptical shape or a semi-circular shape, and is formed by extending the packaging material.
The packaging material is brought into contact with the whole surface of the non-skin contact surface of the sanitary napkin, and the sanitary napkin in contact with the packaging material is integrated with the packaging material in the longitudinal direction of the sanitary napkin. In the two bent parts that divide the front part, the central part and the rear part into three equal parts, the rear part and the front part in this order are folded in three on the skin contact surface side of the central part, and the convex part The both side edges and ends of the packaging material are fastened without fastening the sealing material to form the seal parts of the side edges and the seal parts of the edges, respectively.
The seal part at the end is formed by heat sealing over the entire area of the end,
The packaging material is individually packaged with the sanitary napkin so that the convex portion is located on the surface of the packaging structure.
A packaging structure for sanitary napkins characterized by the above. A method for producing a sanitary napkin packaging structure according to claim 1,
Place the sanitary napkin on the continuous sheet of packaging material, cut the continuous sheet of packaging material into its width, form the convex part and simultaneously form the concave part, at one end in the longitudinal direction A packaging material forming step of sequentially forming a packaging material having a convex portion and having a concave portion formed so as to be fitted to the convex portion at the other end, and an embossing step of embossing at least the convex portion; The sanitary napkin is individually packaged with the packaging material so that the convex portion is located on the surface, and the individual packaging step of sealing a predetermined position is included, and simultaneously with the formation of the convex portion in the packaging material forming step, The manufacturing method of the packaging structure of the sanitary napkin characterized by performing the embossing of this convex part in an embossing process.

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