JP5417126B2 - Diapers - Google Patents

Description

  The present invention relates to a diaper having a fastening member.

  DESCRIPTION OF RELATED ART Conventionally, what has a fastening member is known as a disposable diaper for adults or infants. The disposable diaper having a fastening member is fixed to the wearer by attaching a pair of fastening members provided on both sides of the back part to a target tape in the front part.

  About the conventional disposable diaper, it is disclosed by patent document 1, for example.

Special table 2003-516807 gazette

  However, depending on the wearer's body shape, fixing may be insufficient with only the fastening member. For example, when the wearer's body type is obese, the fastening member is difficult to reach the target tape. For this reason, it may be difficult to reliably attach the fastening member to the target tape. In addition, when the wearer's body shape is thin, even if the fastening member is attached to the target tape, the fastening member is loosened. For this reason, it may be difficult to bring the fastening member into close contact with the waist of the wearer.

  This invention is made | formed in view of such a situation, Even if it is a case where fixation by a fastening member becomes inadequate, it aims at providing a diaper which can fix a diaper favorably to a wearer.

In order to solve the above problems, a first invention of the present application is a diaper, which is a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core interposed between the top sheet and the back sheet. A body part having a front abdomen, a back part, and a narrow crotch part connecting the front part and the back part, and base ends on both side edges of the back part. A pair of fastening members fixed to each other, and the main body extends from both side edges of the back portion to the front abdomen along the side edges of the crotch, and has a length longer than that of the fastening members. The fastening member and the belt part are provided with a locking member attached to the front abdomen, and an elastic member is attached to the belt part. The end of the back portion of the base is the base end of the band It positioned more the rear back side.

2nd invention of this application is a diaper of 1st invention, Comprising: The said elastic member contains the some 1st elastic thread which expands-contracts in the longitudinal direction of the said belt | band | zone part.

3rd invention of this application is a diaper of 2nd invention, Comprising: The 2nd elastic yarn is attached to the both-sides edge part of the said crotch part, In the state which expand | deployed the said main-body part, The second elastic yarns are arranged in parallel to each other.

A fourth invention of the present application is a diaper according to any one of the first invention to the third invention, wherein a substantially arc-shaped cut end portion is formed between a base end portion of the belt portion and the crotch portion. ing.

A fifth invention of the present application is a diaper according to any one of the first invention to the fourth invention, wherein a plurality of the locking members are provided in the belt portion.

According to the first to fifth inventions of the present application, the diaper can be satisfactorily fixed to the wearer by fixing the belt portion to the front abdomen even when the fastening by the fastening member is insufficient. For this reason, it can respond to the wearer of more body types. Further, since the belt portion is formed on the side of the narrow crotch portion, the laminate can be used effectively.
Moreover, a belt | band | zone part can be fitted with a wearer's body by expansion-contraction of an elastic member.
Moreover, the vicinity of the base end portion of the belt portion can be expanded and contracted satisfactorily.

In particular, according to the second invention of the present application, the belt portion can be fitted to the wearer's body by expansion and contraction of the plurality of elastic yarns.

In particular, according to the third invention of the present application, the first elastic yarn and the second elastic yarn can be easily attached to the main body portion in the manufacturing process of the diaper.

In particular, according to the fourth invention of the present application, it is possible to disperse the stress generated between the base end portion of the belt portion and the crotch portion. For this reason, it can suppress that the base end part of a belt | band | zone part breaks.

In particular, according to the fifth invention of the present application, an arbitrary locking member can be attached to the front abdomen. Thereby, the attachment position of a belt | band | zone part can be set more freely.

It is a perspective view of a disposable diaper. It is the top view seen from the top sheet side of a disposable diaper. It is the top view seen from the back sheet side of a disposable diaper. It is sectional drawing which looked at the disposable diaper from the IV-IV position in FIG. It is a perspective view of the disposable diaper which concerns on a modification. It is the top view seen from the top sheet side of the disposable diaper which concerns on a modification.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

<1. Disposable diaper according to one embodiment>
FIG. 1 is a perspective view of a disposable diaper 1 according to an embodiment of the present invention. FIG. 2 is a plan view of the disposable diaper 1 as viewed from the top sheet 10 side in the unfolded state. FIG. 3 is a plan view of the disposable diaper 1 as viewed from the backsheet 20 side in the unfolded state. FIG. 4 is a cross-sectional view of the disposable diaper 1 as viewed from the position IV-IV in FIG. 2 and 3 show a state in which the side seat elastic member 41, the waist elastic member 51, the leg elastic member 52, and the belt elastic member 82, which will be described later, are all extended. Yes.

  As shown in FIGS. 1 to 4, the disposable diaper 1 includes a liquid-permeable top sheet 10, a liquid-impermeable back sheet 20, and an absorbent core 30 interposed between both sheets 10 and 20. It has a main body 2 made of a laminated body. When the wearer of the disposable diaper 1 excretes urine, the urine passes through the top sheet 10, but does not pass through the back sheet 20, and the absorbent core 30 is interposed between the top sheet 10 and the back sheet 20. Absorbed and retained.

  The main body 2 includes a front abdomen 2a applied to the wearer's abdomen, a back part 2b applied to the back of the wearer, and a crotch part 2c connecting the front abdomen 2a and the back part 2b. Hereinafter, the direction in which the front abdominal part 2a, the crotch part 2c, and the back part 2b are connected is referred to as “longitudinal direction”, and the direction perpendicular to the longitudinal direction and along the surface of the main body part 2 is referred to as “width direction”. The main body 2 extends in the longitudinal direction from the front abdominal part 2a to the back part 2b, and has a constricted shape in the width direction at the crotch part 2c located in the middle.

  The top sheet 10 is a liquid-permeable sheet that is disposed on the upper surface side (side closer to the wearer's skin surface) of the main body 2. The top sheet 10 extends in a band shape from the front abdomen 2 a to the back part 2 b, and the dimension in the width direction is smaller than the dimension in the width direction of the outer edge of the main body 2. The top sheet 10 is made of a nonwoven fabric using hydrophilic fibers (cellulose, rayon, cotton, etc.), for example. Moreover, the top sheet 10 may be comprised by the nonwoven fabric which processed the surface of hydrophobic fiber (a polypropylene, polyethylene, polyester, polyamide, nylon, etc.) with surfactant, and was made liquid-permeable.

  The back sheet 20 is a liquid-impermeable sheet disposed on the lower surface side (the side far from the wearer's skin surface) of the main body 2. The backsheet 20 has a shape substantially equivalent to that of the main body 2 in plan view. That is, the back sheet 20 covers the entire lower surface of the main body 2. The backsheet 20 is made of, for example, a water-repellent nonwoven fabric using hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.). The back sheet 20 may be made of a plastic film, or may be made of a plastic film and a highly flexible nonwoven fabric adhered to the lower surface thereof.

  The absorbent core 30 is a member having liquid absorbency and liquid retention that is fixed between the top sheet 10 and the back sheet 20. As shown in FIG. 4, the absorbent core 30 is fixed between the top sheet 10 and the back sheet 20 with an adhesive 55. As shown in FIGS. 2 and 3, the absorption core 30 is formed to be slightly smaller than the outer edge of the main body 2 in a plan view.

  For example, the absorbent core 30 is formed by coating a mass obtained by mixing a granular polymer absorbent body with an aggregate layer of hydrophilic fibers such as pulverized pulp fibers and cellulose fibers with a paper sheet such as tissue paper or a liquid-permeable nonwoven fabric sheet. Composed of Moreover, the absorption core 30 may be comprised with the sheet-like water absorbing body of the superabsorbent polymer. In addition, it is preferable that the absorbent core 30 is made of a polymer absorbent material having no pulp, in that the absorbent core 30 can be formed thin.

  On the upper surface side of the top sheet 10, a pair of side sheets 40 for preventing urine leakage to the side is provided. The pair of side sheets 40 extends in the longitudinal direction so as to cover the left and right side edges of the main body 2. Each side sheet 40 is made of a liquid-impermeable nonwoven fabric. As shown in FIG. 4, the pair of side sheets 40 is attached to the upper surface of another sheet via an adhesive 55 at the side edge on the outer side in the width direction. The side edge portion on the inner side in the width direction of the side sheet 40 is not attached to the upper surface of the top sheet 10 and can rise with respect to the top sheet 10.

  A plurality of side sheet elastic members 41 extending in the longitudinal direction are provided on the side edge of the side sheet 40 on the inner side in the width direction. The side sheet elastic member 41 is attached by adhesive (not shown) in a bag-like portion 42 formed on the side edge portion on the inner side in the width direction of the side sheet 40. The side seat elastic member 41 is attached in the bag-like portion 42 in a state of being extended beyond the natural length. For this reason, the elastic member 41 for side sheets generates the elastic force which shrinks the side sheet 40 to a longitudinal direction.

  When the disposable diaper 1 is opened, the side edge of the side seat 40 on the inner side in the width direction rises due to the elastic force of the side seat elastic member 41. As a result, a pair of upstanding weirs is formed on the upper surface of the main body 2 and leakage of urine excreted by the wearer to the side is prevented.

  A plurality of waist elastic members 51 extending in the width direction are provided on the front abdomen 2a and the back part 2b. The waist elastic member 51 is attached between the top sheet 10 and the back sheet 20 with an adhesive (not shown). The waist elastic member 51 is attached to the front abdominal part 2a and the back part 2b in a state of being extended from the natural length. For this reason, the waist elastic member 51 generates an elastic force that contracts the front part 2a and the back part 2b in the width direction. When the wearer wears the disposable diaper 1, the front abdomen 2 a and the back part 2 b fit around the waist of the wearer due to the contraction force of the waist elastic member 51.

  Further, a plurality of leg-around elastic members (second elastic yarns) 52 extending in the longitudinal direction are provided on both side edges in the width direction of the crotch portion 2c. The leg-around elastic member 52 is attached between the side sheet 40 and the back sheet 20 with an adhesive (not shown). The leg-hole elastic member 52 is attached to both side edges of the crotch portion 2c in a state where it is extended beyond the natural length. For this reason, the leg-hole elastic member 52 generates an elastic force that contracts both side edges of the crotch 2c in the longitudinal direction. When the wearer wears the disposable diaper 1, both side edges of the crotch 2 c can be fitted around the leg of the wearer by the contraction force of the leg elastic member 52.

  For the side seat elastic member 41, the waist elastic member 51, and the leg elastic member 52, for example, thread-like elastic members such as polyurethane yarns may be used. However, instead of the thread-like elastic member, a flat elastic member made of polyurethane, natural rubber or the like may be used.

  The disposable diaper 1 includes a pair of fastening members 60. A base end portion 60a of each fastening member 60 is fixed to a portion (hereinafter referred to as “wing portion 2ba”) of the back portion 2b of the main body portion 2 that protrudes outward in the width direction from the crotch portion 2c. Specifically, as shown in FIG. 4, the base end portion 60 a of the fastening member 60 is fixed via the adhesive 55 between the side sheet 40 and the back sheet 20 in the wing portion 2 ba. The fastening member 60 is made of a nonwoven fabric such as polypropylene, for example.

  Each fastening member 60 includes a fastening main body 61 and two tongue-shaped tabs 62 projecting outward in the width direction from the end of the fastening main body 61 on the free end side. A fastening member 63 for fastening is provided on the inner side surface of each knob portion 62. The fastening member 63 for fastening is being fixed to the inner surface of the knob part 62 via the adhesive agent (illustration omitted). In this embodiment, a hook material (male member) of a hook-and-loop fastener is used for the fastening member 63 for fastening.

  On the other hand, as shown in FIGS. 1 and 3, a target tape 70 is provided on the outer surface of the front part 2 a of the main body 2. The target tape 70 is fixed to the outer surface of the front abdomen 2a through an adhesive (not shown). In the present embodiment, a loop material (female member) of a hook-and-loop fastener is used for the target tape 70. The above-mentioned fastening locking member 63 can be detachably attached to an arbitrary position of the target tape 70.

  In addition, a pair of band portions 80 is formed on the main body portion 2 of the disposable diaper 1. The pair of band portions 80 extend from the pair of wing portions 2ba toward the front abdominal portion 2a along both side edges of the crotch portion 2c. That is, the pair of band portions 80 extends in the longitudinal direction on the side of the crotch portion 2c.

  A band locking member 81 is provided on the inner side surface near the tip of the band 80. The band locking member 81 is fixed to the inner surface of the band 80 via an adhesive (not shown). In the present embodiment, a hook material of a hook-and-loop fastener is used for the band locking member 81. The band locking member 81 can be detachably attached to an arbitrary position of the target tape 70 of the front abdomen 2a.

  As shown in FIG. 2, the band portion 80 is formed such that the length in the longitudinal direction is longer than the length in the width direction of the fastening member 60. Specifically, in a state where the band elastic member 82 described later is extended, the length L1 in the longitudinal direction from the base end 80a of the band 80 to the tip of the band locking member 81 is Both lengths are set so as to be longer than the length L2 in the width direction from the side edge portion of the back portion 2b to the distal end portion of the fastening member 63 for fastening.

  Thus, the disposable diaper 1 is provided with a pair of fastening members 60 and a pair of band portions 80 provided separately from the pair of fastening members 60. For this reason, even if it is a case where fixation by fastening member 60 becomes inadequate, it can fix disposable diaper 1 to a wearer using belt part 80 instead of fastening member 60 or with fastening member 60. .

  As described above, the length of the band portion 80 in the longitudinal direction is longer than the length of the fastening member 60 in the width direction. For this reason, for example, even when the wearer's body shape is obese and the fastening member 60 does not reach the target tape 70, the pair of belt portions 80 can be extended to the target tape 70. Then, the disposable diaper 1 can be fixed to the wearer by attaching the band locking member 81 to the target tape 70.

  On the other hand, even when the wearer's body shape is a thin shape and the fastening member 60 is slackened, the band portion 80 can be superimposed on the fastening member 60. Thereby, the fastening member 60 can be closely_contact | adhered to a wearer's waist circumference, and the shift | offset | difference of the disposable diaper 1 can be prevented.

  That is, the disposable diaper 1 has a pair of fastening members 60 and a pair of band portions 80, so that the disposable diaper 1 can be satisfactorily fixed to more body wearers.

  When manufacturing the main-body part 2 from a rectangular laminated body, the site | part of the side of the narrow crotch 2c is the site | part cut off conventionally. The band portion 80 of the present embodiment is formed using such a side portion of the crotch portion 2c. Thereby, the rectangular laminated body is used without waste. Moreover, if it does in this way, it is not necessary to prepare the sheet | seat for comprising the strip | belt part 80 separately from a rectangular laminated body.

  The band portion 80 is separated from the crotch portion 2 c through a notch 3 formed in the main body portion 2. The notch 3 is not included in the base end portion 80a of the band portion 80. Thereby, the integrity of the band portion 80 and other portions of the main body portion 2 is maintained.

  A substantially arc-shaped cut end 3a is formed at the innermost part of the cut 3, that is, between the base end 80a of the band 80 and the crotch 2c. Since the cut end portion 3a has a substantially arc shape, the stress generated between the base end portion 80a of the band portion 80 and the crotch portion 2c is dispersed. Therefore, when the belt portion 80 is pulled, the stress generated between the base end portion 80a of the belt portion 80 and the crotch portion 2c is dispersed at the cut end portion 3a. Thereby, it is suppressed that the base end part 80a of the belt | band | zone part 80 will fracture | rupture.

  A plurality of band elastic members (first elastic yarns) 82 extending in the longitudinal direction are attached to the band 80. The belt elastic member 82 is attached between the side sheet 40 and the back sheet 20 with an adhesive (not shown). The band elastic member 82 is attached to the band 80 in a state where the band elastic member 82 is extended beyond the natural length. Therefore, the band elastic member 82 generates an elastic force that contracts the band 80 in the longitudinal direction. When the band 80 is used, the band 80 fits around the leg or waist of the wearer due to the contraction force of the band elastic member 82. Further, the wearer can use the band portion 80 with an arbitrary length within the stretchable range. Therefore, it can respond to the wearer of more body types.

  For the band elastic member 82, for example, a thread-like elastic member such as polyurethane yarn is used. However, instead of the thread-like elastic member, a flat elastic member made of polyurethane, natural rubber or the like may be used.

  As shown in FIGS. 2 and 3, the belt elastic member 82 and the leg elastic member 52 described above both extend in the longitudinal direction when the main body 2 is expanded. That is, the belt elastic member 82 and the above-mentioned leg elastic member 52 are arranged in parallel to each other. For this reason, in the manufacturing process of the disposable diaper 1, the leg-hole elastic member 52 and the band elastic member 82 can be attached at the same time while transporting the laminate in one direction. Thereby, the attachment process of the elastic member 52 for leg periphery and the elastic member 82 for belt | band | zone parts is performed efficiently.

  Further, in the present embodiment, the end portion on the back portion 2 b side of the belt portion elastic member 82 is located closer to the back portion 2 b than the base end portion 80 a of the band portion 80. For this reason, the vicinity of the base end portion 80b of the band portion 80 can be expanded and contracted favorably. Therefore, the vicinity of the base end portion 80b of the band portion 80 can be fitted better around the wearer's leg.

<2. Modification>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

  In the above-described embodiment, the fastening locking member 63 and the band locking member 81 are formed of hook members of hook-and-loop fasteners. Further, the target tape 70 is made of a loop material of a hook-and-loop fastener. However, the fastening locking member 63, the band locking member 81, and the target tape 70 may be configured by other means such as an adhesive material.

  Moreover, in said embodiment, the target tape 70 was provided in the front part 2a. However, the disposable diaper 1 does not necessarily need to have the target tape 70 in the front part 2a. For example, the fastening engagement member 63 for fastening and the engagement member 81 for belt portion may be detachably attachable to the nonwoven fabric constituting the outer surface of the front abdomen 2a.

  Further, in the above embodiment, one band locking member 81 is provided in each of the pair of band sections 80. However, a plurality of band locking members 81 may be provided on each of the pair of band portions 80. For example, as in the disposable diaper 1A of FIG. 5, each band 80 may be provided with three band locking members 81 having different positions in the longitudinal direction. In this way, an arbitrary band locking member 81 can be attached to the target tape 70. Thereby, the fastening position of the belt | band | zone part 80 can be set more freely.

  In the above embodiment, the length of the band portion 80 in the longitudinal direction is equal to the length of the crotch portion 2c in the longitudinal direction. However, the length in the longitudinal direction of the band portion 80 may not necessarily be equal to the length in the longitudinal direction of the crotch portion 2c. For example, like the disposable diaper 1B of FIG. 6, the length of the band portion 80 in the longitudinal direction may be shorter than the length of the crotch portion 2c in the longitudinal direction.

  Moreover, the diaper of the present invention may be intended for an adult or may be intended for an infant.

DESCRIPTION OF SYMBOLS 1,1A, 1B Disposable diaper 2 Main-body part 2a Front part 2b Back part 2ba Wing part 2c Crotch part 3a Notch end part 10 Top sheet | seat 20 Back sheet | seat 30 Absorption core 40 Side sheet | seat 51 Elastic member for waist circumference 52 Elastic member for leg circumference 60 Fastening Member 61 Fastening Main Body 63 Fastening Locking Member 70 Target Tape 80 Band 80a Base End 81 Band Locking Member 82 Band Elastic Member

Claims (5)

It consists of a laminated body including a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorption core interposed between the top sheet and the back sheet, a front abdomen, a back part, and the front abdomen And a narrow crotch portion connecting the back portion, and a main body portion,
A pair of fastening members having base ends fixed to both side edges of the back portion;
With
The main body part extends from both side edges of the back part along the side edges of the crotch part to the front abdomen side, and has a pair of belt parts whose length is longer than the fastening member,
The fastening member and the belt portion are provided with a locking member attached to the front abdomen ,
An elastic member is attached to the belt portion,
The end of the rear back-side elastic member is Ruomutsu be located to the rear back side of the base end portion of the band portion.   A diaper according to claim 1,
  The elastic member is a diaper including a plurality of first elastic yarns that expand and contract in a longitudinal direction of the belt portion.   A diaper according to claim 2,
  Second elastic yarns are attached to both side edges of the crotch part,
  A diaper in which the first elastic yarn and the second elastic yarn are arranged in parallel with each other in a state where the main body portion is expanded.   A diaper according to any one of claims 1 to 3,
  A diaper in which a substantially arc-shaped cut end portion is formed between a base end portion of the belt portion and the crotch portion.   A diaper according to any one of claims 1 to 4,
  A diaper in which a plurality of the locking members are provided on the belt portion.

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