Personal care product

The addition of an additional material sheet in the waist regions of adult care products using hot air materials enhances bonding strength, addressing the low strength issue in hot air materials, enabling their use in adult shorts.

CN222130397UActive Publication Date: 2024-12-10KIMBERLY CLARK (CHINA) CO LTD
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Patent Information

Application Number
CN202322922275.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-10-30
Publication Date
2024-12-10
Estimated Expiration
2033-10-30

AI Technical Summary

Technical Problem

Hot air bonding materials used in disposable care products like adult shorts have low strength and easy deformation, particularly at the waist seal, making them unsuitable for adult care products due to inadequate bonding strength.

Method used

A personal care product design that includes an additional material sheet in the waist regions, enhancing bonding strength without increasing thickness or cost, using hot air materials for adult care products.

Benefits of technology

The additional material sheet improves waist bonding strength, allowing hot air materials to be used in adult care products like shorts, maintaining air permeability and comfort while reducing material weight.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to personal care products. The personal care product has a longitudinal direction and a transverse direction perpendicular to each other, and comprises: a front waist region extending in the transverse direction and having two front waist side edges opposite in the transverse direction and a front waist edge between the two front waist side edges; the rear waist area extends in the transverse direction and is provided with two rear waist side edges opposite in the transverse direction and a rear waist edge between the two rear waist side edges, the rear waist side edges are suitable for being combined with the corresponding front waist side edges, and a waist opening is defined by the rear waist edge and the front waist edge together; the crotch area is connected between the front waist area and the rear waist area and provided with two crotch area side edges which are opposite in the transverse direction, each crotch area side edge is suitable for enclosing a leg opening, and the front waist area, the crotch area and the rear waist area are arranged in the longitudinal direction; an absorbent core attached to the crotch region; wherein the front waist region is joined with additional material sheets adjacent to the two front waist side edges and / or the rear waist region is joined with additional material sheets adjacent to the two rear waist side edges.
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Description

Technical Field

[0001] The utility model relates to a personal care product, in particular to a shorts-type disposable personal care product for adults. Background Art

[0002] Hot air material is a type of hot air bonding (combining) material. It is a material that is generated by using hot air from a drying device to penetrate the fiber web and melt it. Generally, hot air bonding materials have the characteristics of being fluffy, soft, elastic, breathable and warm, so they are widely used in disposable products such as baby diapers, adult care pads, sanitary napkins, etc. However, hot air materials also have disadvantages such as low strength and easy deformation. At the same time, the fiber melting point of hot air materials is much higher than that of spunbond materials commonly used in disposable care products such as shorts for adults, resulting in low bonding strength at the waist seal of the product, which also makes hot air materials unsuitable for disposable care products such as shorts for adults. Utility Model Content

[0003] The utility model aims to provide a personal care product which can at least solve some of the above technical problems.

[0004] According to one aspect of the utility model, a personal care product is provided, which has a longitudinal and lateral direction perpendicular to each other, and the disposable personal care product comprises: a front waist area, extending along the lateral direction and having two front waist side edges opposite to each other in the lateral direction and a front waist edge between the two front waist side edges; a rear waist area, extending along the lateral direction and having two rear waist side edges opposite to each other in the lateral direction and a rear waist edge between the two rear waist side edges, wherein the rear waist side edges are suitable for combining with the corresponding front waist side edges and the rear waist edges and the front waist edges jointly enclose a waist opening; a crotch area, connected between the front waist area and the rear waist area and having two crotch area side edges opposite to each other in the lateral direction, wherein each crotch area side edge is suitable for enclosing a leg opening, and wherein the front waist area, the crotch area and the rear waist area are arranged along the longitudinal direction; an absorbent core, attached to the crotch area; wherein the front waist area is adjacent to the two front waist side edges and / or the rear waist area is adjacent to the two rear waist side edges with an additional material sheet joined thereto.

[0005] According to the personal care product provided by this solution, by adding an additional material sheet to the front waist side or the back waist side, the waist bonding strength can be effectively improved without increasing the waist material, thereby not causing cost increase, and not causing discomfort due to the increase in thickness of the front waist area or the back waist area. With the personal care product provided by this solution, the hot air material can be applied to adult care products, especially adult shorts-type disposable care products.

[0006] In some embodiments, the front waist region has a front waist joining area adjacent to the two front waist side edges for combining with the back waist region, the additional material piece is arranged in the front waist joining area and the length of the additional material piece extending along the longitudinal direction does not exceed the length of the front waist joining area in the longitudinal direction.

[0007] In some embodiments, the edges of the additional material panel are flush with the front waist edge and the corresponding front waist side edges.

[0008] In some embodiments, the back waist region has a back waist joining area adjacent to the two back waist side edges for combining with the front waist region, the additional material piece is arranged in the back waist joining area and the length of the additional material piece extending along the longitudinal direction does not exceed the length of the back waist joining area in the longitudinal direction.

[0009] In some embodiments, the edges of the additional material panel are flush with the rear waist edge and the corresponding rear waist side edges.

[0010] In some embodiments, the front waist region and the back waist region are respectively constructed as laminate structures, and the additional material piece is sandwiched in the laminate structure of the front waist region and / or the laminate structure of the back waist region.

[0011] In some embodiments, the additional material piece is attached to a surface of the front waist region facing the back waist region, and / or the additional material piece is attached to a surface of the back waist region facing the front waist region.

[0012] In some embodiments, the additional material piece is attached to a surface of the front waist region facing away from the back waist region, and / or the additional material piece is attached to a surface of the back waist region facing away from the front waist region.

[0013] In some embodiments, the additional material sheet has a length of 120 mm to 150 mm in the longitudinal direction and a width of 20 mm to 60 mm in the transverse direction.

[0014] In some embodiments, the personal care product is a pant-type disposable personal care product.

[0015] In some embodiments, the additional material sheet comprises a material type which is compounded with the material of the front waist region and / or the back waist region by roll material, box material, or attached to the surface of the front waist region and / or the back waist region by online direct hot-melt method.

[0016] Some of the other features and advantages of the utility model will be apparent to those skilled in the art after reading this application, and the other parts will be described in the following specific embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 is a schematic diagram of a personal care product according to an embodiment of the present invention, wherein the personal care product is displayed in a flat-lay shape;

[0019] Figure 2 is a schematic diagram of a personal care product in a processing stage according to an embodiment of the utility model;

[0020] Figure 3A-Figure 3I It is a schematic diagram of the laminated structure of the front waist region and the back waist region of the personal care product according to an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1-front waist area; 10-front waist edge; 12-front waist material; 13-front waist side edge; 3-back waist area; 30-back waist edge; 32-back waist material; 33-back waist side edge; 5-crotch area; 50-crotch area side edge; 7-additional material piece; 9-personal care product DETAILED DESCRIPTION

[0023] Now, with reference to the accompanying drawings, the schematic scheme of the personal care product disclosed by the utility model is described in detail. Although the accompanying drawings are provided to present some embodiments of the utility model, the accompanying drawings do not have to be drawn according to the size of the specific implementation scheme, and certain features may be enlarged, removed or partially cut to better illustrate and explain the disclosure of the utility model. Some components in the accompanying drawings can be adjusted in position according to actual needs without affecting the technical effect. The phrase "in the accompanying drawings" or similar terms appearing in the specification do not necessarily refer to all drawings or examples.

[0024] As used in the present invention, the term "bond" refers to the joining, adhering, connecting, attaching, etc. of two elements. Two elements will be considered to be joined together when they are joined, adhered, connected, attached, etc. directly to each other or indirectly to each other, such as when superimposed and joined to each other. The joining can be carried out via, for example, adhesives, pressure bonding, heat bonding, ultrasonic welding, splicing, sewing, etc.

[0025] As used herein, the term "ultrasonic welding" generally refers to a method performed, for example, by passing the material through a slit between an ultrasonic generator and a support roll.

[0026] As used in the present invention, the term "elastic member" includes an elastic elongated material, such as but not limited to elastic rubber band and elastic fiber nonwoven fabric.

[0027] As used herein, the term "elastomeric" or "elastic" generally refers to a material that is stretched in at least one direction (e.g., longitudinally or transversely) by application of a stretching force and is able to contract / recover to approximately its original size by release of the stretching force.

[0028] The utility model provides a technical solution that can apply hot air material (such as hot air nonwoven material or hot air nonwoven fabric) to adult personal care products, while ensuring that the adult personal care products have sufficient bonding strength in the waist joint area. The hot air material can increase the air permeability and feel of the product, while the sufficient bonding strength allows the front waist area and the back waist area of ​​the personal care product to use materials with lower gram weight.

[0029] Figure 1 An example of a personal care product for adults is shown, which personal care product may be, for example, a pant-type personal care product, or "diaper". Figure 1 The shorts-type personal care product is shown in a flat configuration and in a natural state, and is not elastically deformed or wrinkled by external forces. As shown in the figure, the personal care product 9 is in a sheet shape as a whole, having a longitudinal direction L and a transverse direction T. Along the longitudinal direction L, the personal care product 9 can be roughly divided into three parts, namely, the front waist area 1, the crotch area 5 and the back waist area 3, wherein the crotch area 5 is connected between the front waist area 1 and the back waist area 3.

[0030] The front waist region 1 is a part covering the wearer's ventral waistline. The front waist region 1 extends in the transverse direction T, and has front waist side edges 13 on opposite sides in the transverse direction, and a front waist edge 10 between the two front waist side edges 13. In this embodiment, the front waist edge 10 and the front waist side edges 13 on both sides substantially enclose the front waist region 1 of the personal care product 9.

[0031] The back waist region 3 is a part covering the back waist of the wearer. The back waist region 3 extends in the transverse direction T, and has back waist side edges 33 on opposite sides in the transverse direction, and has a back waist edge 30 between the two back waist side edges 33. In this embodiment, the back waist edge 30 and the back waist side edges 33 on both sides basically enclose the back waist region 3 of the personal care product 9.

[0032] Both the front waist region 1 and the back waist region 3 may be laminated, for example, formed by laminating an outer layer of hot air nonwoven fabric facing away from the wearer and an inner layer of hot air nonwoven fabric facing the wearer. Between the inner and outer layers of nonwoven fabric, a plurality of elastic members extending in the transverse direction T may be attached, such as spandex strands or rubber strands, which may be commercially available.

[0033] Crotch district 5 extends along longitudinal direction L and is connected between front waist area 1 and rear waist area 3. Crotch district 5 can extend into the scope of front waist area 1, and also can be connected with front waist area 1 at the edge of front waist area 1. In addition, crotch district 5 can enter the scope of rear waist area 3, and also can be connected with rear waist area 3 at the edge of rear waist area 3. Crotch district 5 has crotch district side edge 50 respectively on both sides in the horizontal direction. In the present embodiment, by front waist edge 10, front waist side edge 13 on both sides, crotch district side edge 50 on both sides, rear waist side edge 33 on both sides and rear waist edge 30, surround and set out the peripheral profile of substantially whole personal care product under the flat state together.

[0034] The crotch region 5 is also provided with an absorbent core. The absorbent core can extend through the entire crotch region 5 in the longitudinal direction L, and can also extend into the front waist region 1 and the back waist region 3. The absorbent core is a member formed by stacking liquid absorbent raw materials, and as the liquid absorbent raw material, for example, liquid absorbent fibers such as pulp fibers can be used. In addition, the absorbent core can contain, for example, a superabsorbent polymer as the liquid absorbent particulate matter, or can also contain liquid absorbent raw materials other than liquid absorbent fibers and liquid absorbent particulate matter.

[0035] Figure 1 A single personal care product 9 is shown which needs to be folded in the crotch region 5 and joins the front waist region 1 and the back waist region 3 together near the front waist side edge 13 and the back waist side edge 33 to form a pant configuration.

[0036] To this end, the front waist region 1 has front waist joining areas at the front waist side edges 13 adjacent to both sides, respectively, for joining with the back waist region 3, for example, by ultrasonic welding. In the illustrated embodiment, each front waist joining area is a small area extending in the transverse direction from the corresponding front waist side edge 13. In other embodiments, the front waist joining area may be slightly spaced apart from the front waist side edge 13 of the corresponding side by a small distance.

[0037] Similarly, the back waist region 3 has back waist joining areas at the back waist side edges 33 adjacent to both sides, respectively, for joining with the front waist region 1, for example, by ultrasonic welding. In the illustrated embodiment, each back waist joining area is a small area extending in the transverse direction from the corresponding back waist side edge 33. In other embodiments, the back waist joining area may be slightly spaced apart from the back waist side edge 33 of the corresponding side by a small distance.

[0038] When the personal care product 9 is bent from the crotch area 5 and combined together with the front waist joining area of ​​the front waist area 1 and the back waist joining area of ​​the back waist area 3, the front waist edge 10 and the back waist edge 30 together enclose a waist opening for accommodating the wearer's torso, and the two crotch side edges 50 of the crotch area 5 each enclose a leg opening for accommodating the wearer's thighs.

[0039] Here, in order to increase the strength of the hot air material when combined, in one embodiment, an additional material sheet 7 is provided in the front waist region 1. The additional material sheet 7 can be attached to the front waist region 1 at the position of the front waist junction area, and its width extending along the transverse direction T may not exceed the transverse width of the front waist junction area, and the length extending along the longitudinal direction L may not exceed the longitudinal length of the front waist junction area. In other words, the transverse width and longitudinal length of the additional material sheet 7 are not limited to being consistent with the transverse width and longitudinal length of the front waist junction area. When the bonding strength is sufficient, the transverse width of the additional material sheet 7 may be less than the transverse width of the front waist junction area, and the longitudinal length of the additional material sheet 7 may also be less than the longitudinal length of the front waist junction area. Preferably, the transverse width of the additional material sheet 7 may be 20 mm-60 mm, more preferably 30 mm. Preferably, the longitudinal length of the additional material sheet 7 may be 120 mm-150 mm, more preferably 140 mm.

[0040] FIG. 3A to FIG. 3C Several specific examples of arranging the additional material piece 7 in the front waist region 1 are shown. Figure 3A As shown, the additional material sheet 7 is sandwiched in the laminated structure of the front waist region 1 and is closer to the outer layer of hot air nonwoven fabric of the front waist region 1. In addition, the additional material sheet 7 can also be closer to the inner layer of hot air nonwoven fabric of the front waist region 1 in the laminated structure. Sandwiching the additional material sheet 7 in the laminated structure can reduce the visual patch feeling and make the product look neater. However, the arrangement of the additional material sheet 7 is not limited to this. In some cases, such as when the process path does not allow, the additional material sheet 7 can also be arranged in the front waist region 1 in other ways. For example, Figure 3B The additional material sheet 7 is shown to be bonded to the surface of the front waist region 1 facing the rear waist region 3, and Figure 3C It is shown that an additional material piece 7 is bonded to the surface of the front waist region 1 facing away from the rear waist region 3 .

[0041] In another embodiment, an additional material piece 7 may be provided in the back waist region 3. The additional material piece 7 may be attached to the back waist region 3 at the position of the back waist joining area, and the width thereof extending in the transverse direction T may not exceed the transverse width of the back waist joining area, and the length extending in the longitudinal direction L may not exceed the longitudinal length of the back waist joining area. In other words, the transverse width and longitudinal length of the additional material piece 7 are not limited to being consistent with the transverse width and longitudinal length of the back waist joining area. When the bonding strength is sufficient, the transverse width of the additional material piece 7 may be less than the transverse width of the back waist joining area, and the longitudinal length of the additional material piece 7 may also be less than the longitudinal length of the back waist joining area. Preferably, the transverse width of the additional material piece 7 may be between 20 mm and 60 mm, more preferably between 30 mm. Preferably, the longitudinal length of the additional material piece 7 may be between 120 mm and 150 mm, more preferably between 140 mm.

[0042] Figures 3D to 3FSeveral specific examples of arranging the additional material piece 7 in the rear waist region 3 are shown. Figure 3D As shown, the additional material sheet 7 is sandwiched in the laminated structure of the back waist region 3 and is closer to the outer layer of hot air non-woven fabric of the back waist region 3. In addition, the additional material sheet 7 can also be closer to the inner layer of hot air non-woven fabric of the back waist region 3 in the laminated structure. Sandwiching the additional material sheet 7 in the laminated structure can reduce the visual patch feeling and make the product look neater. However, the arrangement of the additional material sheet 7 is not limited to this. In some cases, such as when the process path does not allow, the additional material sheet 7 can also be arranged in the back waist region 3 in other ways. For example, Figure 3E The additional material sheet 7 is shown to be bonded to the surface of the rear waist region 3 facing the front waist region 1, and Figure 3F The attachment of an additional material piece 7 to the surface of the rear waist region 3 facing away from the front waist region 1 is shown.

[0043] In yet another embodiment, additional material pieces 7 may be provided in both the front waist region 1 and the back waist region 3. Specifically, an additional material piece 7 is attached to the front waist region 1 at the front waist region joining area, and another additional material piece 7 is attached to the back waist region 3 at the back waist joining area. Here, the transverse width and longitudinal length of the additional material piece 7 may refer to the first two embodiments.

[0044] FIG. 3G to FIG. 3I Several specific examples are shown in which the additional material sheet 7 is arranged in both the front waist region 1 and the back waist region 3. Figure 3G As shown, additional material sheets 7 are sandwiched in the laminated structure of the front waist region 1 and the laminated structure of the back waist region 3, wherein the additional material sheet 7 in the front waist region 1 is closer to the outer layer of hot air non-woven fabric in the front waist region 1, while the additional material sheet 7 in the back waist region 3 is closer to the outer layer of hot air non-woven fabric in the back waist region 3. In addition, the additional material sheet 7 in the front waist region 1 may also be closer to the inner layer of hot air non-woven fabric in the front waist region, while the additional material sheet 7 in the back waist region 3 may also be closer to the inner layer of hot air non-woven fabric in the back waist region 3. Sandwiching the additional material sheet 7 in the laminated structure can reduce the visual sense of patchwork and make the appearance of the product neater. However, the arrangement of the additional material sheet 7 is not limited to this. In some cases, such as when the process path does not allow, the additional material sheet 7 may also be arranged in the front waist region 1 and the back waist region 3 in other ways. For example, Figure 3H It is shown that the additional material piece 7 is respectively bonded to the surface of the front waist region 1 facing the back waist region 3, and the surface of the back waist region 3 facing the front waist region 1. Fig. 3I It is shown that the additional material piece 7 is bonded to the surface of the front waist region 1 facing away from the back waist region 3 , and to the surface of the back waist region 3 facing away from the front waist region 1 .

[0045] Whether the additional material sheet 7 is arranged in the front waist region 1 or the back waist region 3, the material type is not limited, such as but not limited to thermal bonding non-woven fabrics, spunbond non-woven fabrics, spunlace non-woven fabrics, hot air non-woven fabrics, or other materials commonly used in personal care products. The non-woven fabric of the additional material sheet 7 can also be made of elastic fiber. The additional material sheet 7 increases the bonding strength of the hot air material, so that the front waist material 12 of the front waist region 1 and the back waist material 32 of the back waist region 3 can be reduced. In addition, adding the additional material sheet 7 to the front waist region 1 and the back waist region 3 will not affect the original bonding process of the front waist region and the back waist region, and the original bonding equipment (such as ultrasonic welding equipment) basically does not need to be improved.

[0046] The additional material sheet 7 can be bonded to the front waist region 1 and the back waist region 3 by any suitable process. In one embodiment, the additional material sheet 7 is bonded to the front waist region 1 and the back waist region 3 by an adhesive. Specifically, the nonwoven fabric is pulled from the unwinding device by a pulling roller to an adhesive release station (such as a glue gun), where an adhesive is applied to the surface of the nonwoven fabric. Afterwards, the nonwoven fabric is sent to a cutting station (such as a cutter) and cut into a specified size. Next, the nonwoven fabric is transferred to a semi-finished product of a personal care product on the production line by a vacuum adsorption device and bonded thereto at a specified position. The specified position is, for example but not limited to, aligning the edge of the additional material sheet 7 with the front waist edge and the front waist side edge of the personal care product, or aligning it with the back waist edge and the back waist side edge.

[0047] Figure 2 The figure shows a plurality of continuous pieces of personal care products 9 in a processing state, wherein the additional material piece 7 has been attached to the waist position of the personal care product as described above. Afterwards, two adjacent pieces of personal care products 9 can be separated along the cutting line 8 by means of a cutting station, so that they appear Figure 1 The single flat state shown. Then the front waist joint area of ​​the personal care product 9 is combined with the corresponding back waist joint area to form the final shorts-shaped personal care product.

[0048] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0049] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations made by any technician in the field without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A personal care product having longitudinal and lateral directions perpendicular to each other, characterized in that: The personal care products include: A front waist region (1) extending in the transverse direction and having two front waist side edges (13) opposite to each other in the transverse direction and a front waist edge (10) between the two front waist side edges (13); a rear waist region (3) extending in the transverse direction and having two rear waist side edges (33) opposite to each other in the transverse direction and a rear waist edge (30) between the two rear waist side edges (33), wherein the rear waist side edges (33) are suitable for being combined with the corresponding front waist side edges (13) and the rear waist edge (30) and the front waist edge (10) together enclose a waist opening; a crotch region (5) connected between the front waist region (1) and the back waist region (3) and having two crotch region side edges (50) opposite to each other in the transverse direction, wherein each crotch region side edge (50) is suitable for enclosing a leg opening, and wherein the front waist region (1), the crotch region (5) and the back waist region (3) are arranged along the longitudinal direction; an absorbent core attached to the crotch region (5); The front waist region (1) is joined with an additional material piece (7) adjacent to the two front waist side edges (13) and / or the back waist region (3) is joined with an additional material piece (7) adjacent to the two back waist side edges (33).

2. The personal care product according to claim 1, characterized in that The front waist region (1) has a front waist joining area for joining with the back waist region (3) adjacent to the two front waist side edges (13); the additional material piece (7) is arranged in the front waist joining area and the length of the additional material piece (7) extending along the longitudinal direction does not exceed the length of the front waist joining area in the longitudinal direction.

3. The personal care product according to claim 2, characterized in that The edge of the additional material sheet (7) is flush with the front waist edge (10) and the corresponding front waist side edge (13).

4. The personal care product according to claim 1, characterized in that The rear waist region (3) has a rear waist joining area for joining with the front waist region (1) adjacent to the two rear waist side edges (33); the additional material piece (7) is arranged in the rear waist joining area and the length of the additional material piece (7) extending along the longitudinal direction does not exceed the length of the rear waist joining area in the longitudinal direction.

5. The personal care product according to claim 4, characterized in that The edge of the additional material sheet (7) is flush with the rear waist edge (30) and the corresponding rear waist side edge (33).

6. The personal care product according to any one of claims 1 to 5, characterized in that The front waist region (1) and the back waist region (3) are respectively constructed as laminated structures, and the additional material sheet (7) is sandwiched in the laminated structure of the front waist region (1) and / or the laminated structure of the back waist region (3).

7. The personal care product according to any one of claims 1 to 5, characterized in that The additional material piece (7) is attached to the surface of the front waist region (1) facing the rear waist region (3), and / or the additional material piece (7) is attached to the surface of the rear waist region (3) facing the front waist region (1).

8. The personal care product according to any one of claims 1 to 5, characterized in that The additional material piece (7) is attached to the surface of the front waist region (1) facing away from the back waist region (3), and / or the additional material piece (7) is attached to the surface of the back waist region (3) facing away from the front waist region (1).

9. The personal care product according to any one of claims 1 to 5, characterized in that The additional material sheet (7) has a length in the longitudinal direction of 120 mm to 150 mm and a width in the transverse direction of 20 mm to 60 mm.

10. The personal care product according to any one of claims 1 to 5, characterized in that The personal care product is a shorts-type disposable personal care product.

11. The personal care product according to any one of claims 1 to 5, characterized in that The additional material sheet (7) comprises a material type which is compounded with the material of the front waist region (1) and / or the back waist region (3) by means of a roll material or a box material, or is attached to the surface of the front waist region (1) and / or the back waist region (3) by means of an online direct hot-melt method.