JP5318700B2 - Disposable diapers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a diaper user from picking the tab of his/her disposable diaper after wearing it, and from causing its unintended slackening. <P>SOLUTION: A fastening tape 4 includes an roughly rectangular base tape 41 extending from the rear part 203 of the diaper body 2 in a width direction, and a fastening member 42 attached on the base tape 41. On the base tape 41, a weakened line 45 is formed extending over the total tape width length and approximately in parallel with the tape width direction. When the disposable diaper 1 is put on a user, the fastening member 42 is fastened to the external surface of a front part 201 of the diaper body 2, and then a caretaker or the like cuts the base tape 41 along the weakened line 45, separates a tab 44 from its fastening portion 43 and removes the tab from the fastening tape 4. This prevents the diaper user or the like suffering dementia, or the like from picking and pulling the tab 44, and as a result, the fastening tape 4 is prevented from unintended release and from getting the disposable diaper 1 out of place from the user. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a disposable diaper.

  Conventionally, as disposable diapers, tape-type diapers that are fastened around the waist with a fastening tape between a part that abuts on the abdomen side of the wearer and a part that abuts on the back side, and a body opening at the upper end. An underpants type having a pair of leg openings at the bottom is used. For tape-type disposable diapers, tabs on the end of the fastening tape (ie outside the hook-and-loop fastener or adhesive) to make it easier for caregivers who wear disposable diapers to pick up and fasten the tape. Is provided.

  On the other hand, a pants-type disposable diaper is formed into a pants-type by overlapping and sealing both sides of the ventral side portion and both sides of the back side portion of the outer packaging material. In Patent Document 1, by sealing the inner surface of the side end portion of the belly side portion of the outer packaging material on the outer surface of the side end portion of the dorsal side portion, the side seal portions are in the left-right direction on both the left and right sides of the disposable diaper. It is prevented from protruding. As a result, the side seal portion is prevented from being torn by a dementia wearer or the like holding and pulling the side seal portion.

JP 2007-195792 A

  By the way, when a tape-type disposable diaper is attached to a dementia wearer, etc., the wearer picks and pulls the tab portion of the fastening tape, so that the fastening of the fastening tape is released and the disposable diaper is removed from the wearer. There is a risk of losing.

  This invention is made | formed in view of the said subject, and it aims at preventing the tab part of the disposable diaper after wearing from being picked, and preventing the unintentional fixation release.

  The invention according to claim 1 is a disposable diaper having a front part, a crotch part, and a rear part in the longitudinal direction in order, and a substantially sheet-like shape in which an absorption core is disposed between the back sheet and the top sheet. A main body part and a pair of fastening tapes attached to both sides of the rear part in the width direction and fastened to the front part, each of the pair of fastening tapes being secured to the front part. A separable fastening part, a tab part located outside the fastening part in the width direction and not fastened to the front part, and the fastening part and the tab part are separated. And a separation structure for removing the tab portion.

  The invention according to claim 2 is the disposable diaper according to claim 1, wherein each of the pair of fastening tapes includes a tape base material and a fastening member attached on the tape base material. The fastening part is a laminated part of the tape base material and the fastening member, and the tab part is a part of the tape base material that is outside in the width direction with respect to the fastening member. The separation structure is a weakened line formed on the tape base material.

  Invention of Claim 3 is a disposable diaper of Claim 2, Comprising: The said weakening line overlaps with the outer edge of the said fastening member.

  Invention of Claim 4 is a disposable diaper of Claim 2 or 3, Comprising: The said fixing member is the said tape base material over the whole tape width direction perpendicular | vertical to the direction where the said tape base material is extended. Provided on top.

  Invention of Claim 5 is a disposable diaper in any one of Claim 1 thru | or 4, Comprising: In each of a pair of said fastening tape, the whole area | region between the said back part and the said tab part is. It is the said fastening part.

  In this invention, it can prevent that the tab part of the disposable diaper after wear is picked, and can prevent the unintentional cancellation | release cancellation | release.

It is a top view of a disposable diaper. It is sectional drawing of a disposable diaper. It is a top view which expands and shows the site | part of a fastening tape vicinity. It is a figure which shows the example of another fastening tape. It is a figure which shows the example of another fastening tape. It is a figure which shows the example of another fastening tape. It is a figure which shows the example of another fastening tape.

  FIG. 1 is a plan view showing a disposable diaper 1 according to one embodiment of the present invention in an unfolded state. The disposable diaper 1 is a tape-type disposable diaper in which a part that abuts on the abdomen side of the wearer and a part that abuts on the back side are fastened by a fastening tape 4 around the waist and worn. Receive excrement. In FIG. 1, the disposable diaper 1 is drawn with the surface on the side in contact with the wearer at the time of wearing (that is, the wearer side) facing forward.

  FIG. 2 is a cross-sectional view of the disposable diaper 1 cut along a plane perpendicular to the longitudinal direction (that is, the vertical direction in FIG. 1) at the position AA shown in FIG. As shown in FIGS. 1 and 2, the disposable diaper 1 is disposed on a substantially sheet-like main body 2 and on both sides of the main body 2 (that is, on both sides in the left-right direction in FIGS. 1 and 2). The pair of side sheets 3 is provided over substantially the entire length of the main body 2 in the longitudinal direction. As shown in FIG. 1, the disposable diaper 1 is a pair of affixed on both sides in the width direction of the main body 2 (that is, a direction perpendicular to the longitudinal direction) in the vicinity of one end in the longitudinal direction of the main body 2. The fastening tape 4 is further provided.

  The upper part 201 and the lower part 203 in FIG. 1 of the main body 2 are parts that contact the skin of the wearer's abdomen and dorsal side, respectively. In the following description, “front part 201” and “rear part” Part 203 ". Further, a portion 202 that is continuous from the front portion 201 and the rear portion 203 between the front portion 201 and the rear portion 203 and faces the crotch portion of the wearer is referred to as a “crotch portion 202”. In the disposable diaper 1, the main body 2 has a front part 201, a crotch part 202, and a rear part 203 in order in the longitudinal direction, and the width of the front part 201 and the rear part 203 is larger than the width of the crotch part 202. The pair of fastening tapes 4 are attached to both sides of the rear portion 203 in the width direction. When the disposable diaper 1 is attached to the wearer, the outer surface of the front portion 201 (i.e., the surface in contact with the wearer) Is fixed to the opposite surface).

  As shown in FIGS. 1 and 2, the main body 2 includes a top sheet 21, a back sheet 23, and an absorbent core 22 arranged between the top sheet 21 and the back sheet 23. In FIG. 2, for convenience of illustration, each component of the disposable diaper 1 is drawn separately. Moreover, in FIG. 1, the outline of the absorption core 22 is drawn with the thick broken line, in order to make an understanding of a figure easy. As shown in FIG. 1, the width of the absorbent core 22 in the front part 201 and the rear part 203 is larger than the width of the absorbent core 22 in the crotch part 202. In other words, the absorption core 22 has a so-called hourglass shape.

  The top sheet 21 shown in FIG. 2 is joined to the back sheet 23 via a hot melt adhesive around the absorbent core 22. Further, the outer side in the width direction of the side sheet 3 is a portion exposed from the top sheet 21 of the back sheet 23 and a portion near the edge in the width direction of the top sheet 21 over the entire length in the longitudinal direction. Joined via an adhesive. The side sheet 3 includes a side sheet main body 31 and an elastic member 32 a that is bonded to the inner edge portion in the width direction of the side sheet main body 31 with a hot melt adhesive and extends in the longitudinal direction.

  At both ends in the longitudinal direction of the main body 2 shown in FIG. 1, the inner portions in the width direction of the side sheets 3 (that is, the portions on the central axis side in the width direction of the main body 2) are interposed via the hot melt adhesive. The top sheet 21 is joined to the wearer side surface. In addition, at the portion in the vicinity of the outer edge of the side sheet 3, two elastic members 32b extending in the longitudinal direction are sandwiched between the side sheet 3 and the back sheet 23 and joined by a hot melt adhesive. As these hot melt adhesives, polyolefin-based, rubber-based, vinyl acetate-based and the like are used. Note that the bonding between the top sheet 21 and the back sheet 23 and the bonding between the side sheet 3 and the top sheet 21 may be performed by heat fusion bonding, ultrasonic bonding, or the like.

  In each side sheet 3 shown in FIGS. 1 and 2, the inner portion 313 between both ends in the longitudinal direction is not joined to the top sheet 21 (and other configurations), and the elastic member 32 a contracts. By doing so, as shown in FIG. 2, the portion 313 becomes a side wall (so-called three-dimensional gather) that rises toward the wearer and abuts near the root of the wearer's leg. Further, when the elastic member 32b contracts, the side sheet 3 and the back sheet 23 rise toward the wearer side and inward to form a leg gather, and when the disposable diaper 1 is worn, the side sheet 3 and the back sheet 23 are in close contact with the vicinity of the base of the wearer's foot. To do.

  As shown in FIG. 1, three elastic members 25 that are sandwiched between a top sheet 21 and a back sheet 23 and extend in the width direction are provided at both ends in the longitudinal direction of the main body 2. In the disposable diaper 1, a waist gather is formed by contraction of the elastic member 25 joined to the top sheet 21 and the back sheet 23 in the extended state, and the main body 2 is placed around the waist of the wearer when the disposable diaper 1 is worn. In close contact. In the disposable diaper 1, the main body 2 is brought into close contact with the wearer by the elastic members 32a and 32b and the elastic member 25, thereby preventing leakage of urine and the like from around the legs, between the crotch, the abdomen and the back.

  The top sheet 21 is a liquid-permeable sheet material, for example, a non-woven fabric formed of hydrophilic fibers, and quickly captures moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunlace nonwoven fabrics. As hydrophilic fibers forming these nonwoven fabrics, cellulose, rayon, cotton, or the like is usually used. In addition, as the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surfaces are hydrophilically treated with a surfactant may be used.

  The absorbent core 22 is made by mixing a hydrophilic fiber such as pulverized pulp fiber or cellulose fiber with a superabsorbent polymer (SAP (Super Absorbent Polymer)) or a superabsorbent material such as a superabsorbent fiber. It is formed by wrapping with a liquid-permeable nonwoven fabric or the like, and absorbs moisture that has passed through the top sheet 21 and quickly fixes it. Tissue paper, liquid-permeable nonwoven fabric, etc. that wraps hydrophilic fibers are joined to the hydrophilic fibers and water-absorbing material with a hot-melt adhesive, and the shape of the hydrophilic fibers is lost. Prevent later dropout). In the present embodiment, the absorbent core 22 includes pulp fibers and SAP.

  As the back sheet 23, a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a meltblown nonwoven fabric, an SMS (spunbond / meltblown / spunbond) nonwoven fabric) formed of hydrophobic fibers, A liquid-impermeable plastic film or a laminated sheet obtained by laminating these non-woven fabrics and a plastic film is used, and the water content of excreta reaching the back sheet 23 may ooze out of the main body 2. Is prevented. When a plastic film is used for the back sheet 23, a plastic film having moisture permeability (breathability) may be used from the viewpoint of preventing the disposable diaper 1 from being stuffy and improving the wearer's comfort. preferable.

  As the side sheet main body 31, a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, or an SMS nonwoven fabric) formed of hydrophobic fibers is used. As the elastic members 32a, 32b, and 25, for example, polyurethane yarn, belt-like polyurethane film, yarn-like or belt-like natural rubber, and the like are used. In the present embodiment, polyurethane yarn is used as each elastic member.

  As shown in FIG. 1, the fastening tape 4 includes a substantially rectangular tape base 41 protruding in the width direction from the rear portion 203 of the main body 2, and a fastening member 42 attached on the tape base 41. Prepare. The fastening member 42 extends in the tape width direction perpendicular to the direction in which the tape base material 41 extends (that is, the vertical direction in FIG. 1 and coincides with the longitudinal direction of the main body 2). Provided on top.

  In the disposable diaper 1, the inner end in the width direction of the tape base material 41 is sandwiched and joined between the side sheet 3 and the back sheet 23 (may be between the top sheet 21 and the back sheet 23). Thus, the fastening tape 4 is attached to the main body 2. In the present embodiment, a non-woven fabric is used as the tape base material 41, and a hook-and-loop fastener is used as the fastening member 42.

  In the fastening tape 4, the laminated portion of the tape base material 41 and the fastening member 42 is a fastening portion 43 that can be fastened to the front portion 201 of the main body 2. A portion outside the fixing member 42 in the width direction is a tab portion 44 that is located outside the fixing portion 43 in the width direction and cannot be fixed to the front portion 201 of the main body 2. In the present embodiment, the width of the fastening portion 43 in the left-right direction in FIG. 1 (that is, the width of the fastening member 42) is 10 mm to 100 mm, and the width of the tab portion 44 is 5 mm to 8 mm.

  Further, the tape base 41 is formed with a weakening line 45 extending substantially parallel to the tape width direction over the entire tape width direction, and the weakening line 45 substantially overlaps the outer edge 421 of the fastening member 42. . The weakening line 45 is a line having a cutting resistance smaller than that of the surrounding portion. In this embodiment, a plurality of short slits that penetrate the tape base material 41 and extend in the tape width direction are intermittent in the tape width direction. The perforations arranged in In the disposable diaper 1, the fastening portion 43 and the tab portion 44 are separated by the weakening line 45, so that the tab portion 44 can be removed from the fastening tape 4. In the fastening tape 4, the weakening line 45 has a separation structure that separates the fastening portion 43 and the tab portion 44.

  When the disposable diaper 1 is attached to the wearer, first, the front part 201 and the rear part 203 of the main body 2 are respectively worn in a state where the fastening tape 4 is not fixed to the front part 201 of the main body 2. It is made to contact | abut to a person's abdomen and back side. Subsequently, each tab portion 44 of the pair of fastening tapes 4 is picked by an operator such as a caregiver or a nurse, and each fastening tape 4 is drawn toward the wearer's stomach side. Next, when the fastening portion 43 is pressed toward the outer surface of the front portion 201 of the main body portion 2, the fastening member 42 is fastened to the front portion 201. Thereafter, one end of the tab portion 44 in the tape width direction is picked and pulled toward the other in the tape width direction while the fastening portion 43 is lightly pressed toward the main body 2 by the operator. Thus, the tape base material 41 is cut along the weakening line 45, and the tab portion 44 is separated from the fastening portion 43 and removed from the fastening tape 4. Alternatively, the tab base 44 is picked by an operator and pulled in a direction away from the fastening portion 43 along the outer surface of the main body 2 while being lightly pressed toward the main body 2, whereby the tape base 41 is weakened. The tab portion 44 is separated from the fastening portion 43 and removed from the fastening tape 4.

  When the disposable diaper 1 is attached, the operator can easily fasten the fastening tape 4 to the front part 201 of the main body 2 by gripping the tab portion 44 of the fastening tape 4. In addition, by removing the tab portion 44 from the fastening tape 4 after the fastening tape 4 is fastened, a wearer who is an infant, a wearer with dementia, or a wearer having a mental disorder may The tab portion 44 of the disposable diaper 1 is prevented from being pulled. As a result, unintended fastening release of the fastening tape 4 can be prevented, and the disposable diaper 1 can be prevented from coming off the wearer. When the disposable diaper 1 is attached to a wearer who does not pull the fastening tape 4, it is not necessary to remove the tab portion 44.

  In the fastening tape 4, a weakening line 45 formed on the tape base material 41 is used as a separation structure for separating the tab portion 44 and the fastening portion 43. Thereby, the separation structure can be provided on the fastening tape 4 easily and at low cost. In the present embodiment, the weakening line 45 is a perforation in which a plurality of short through slits extending in the tape width direction are intermittently arranged in the tape width direction, but the weakening line 45 is replaced with a plurality of through slits. A plurality of substantially circular through holes may be intermittently arranged in the tape width direction. Further, a weakened line 45 is formed on the surface of the tape base material 41 by forming a notch having a linear shape over the entire length in the tape width direction and having a depth about half the thickness of the tape base material 41. May be.

  Further, in the fastening tape 4, since the weakening line 45 overlaps the outer edge 421 of the fastening member 42, the entire tab portion 44 can be removed from the fastening tape 4, and as a result, the wearer can remove the tab portion 44. It is more reliably prevented to pick and pull. Note that the weakening line 45 may be slightly shifted from the edge 421 of the fastening member 42 as long as the weakening line 45 substantially overlaps the edge 421 of the fastening member 42 so that the entire tab portion 44 can be removed. For example, the weakening line 45 may be formed outside the edge 421 of the fastening member 42 by about 1 mm.

  As described above, in the fastening tape 4, the fastening member 42 is provided on the tape base material 41 over the entire tape width direction, so that the upper and lower portions of the fastening member 42 in FIG. The wearer is prevented from picking and pulling. As a result, unintended fastening release of the fastening tape 4 can be prevented more reliably.

  FIG. 3 is a view showing another preferred example of the fastening tape. 3, the site | part of one fastening tape 4a vicinity is expanded and shown among a pair of fastening tapes 4a of the disposable diaper 1, and the structure of the other fastening tape 4a is also shown in FIG. The same as 4a. In the fastening tape 4 a, the fastening member 42 is provided on the tape base material 41 over the entire area between the tab portion 44 and the rear portion 203 of the main body portion 2, and the tab portion 44 and the rear portion of the main body portion 2. The entire region between the portions 203 is a fastening portion 43.

  When the disposable diaper 1 is mounted, the tape base material 41 is cut along the weakening line 45 in each of the pair of fastening tapes 4a and the tab portion 44 is removed in the same manner as described above. This prevents the wearer from gripping and pulling the tab portion 44. Further, since the entire surface of the fastening tape 4a (that is, the entire surface protruding from the main body portion 2) is fastened to the main body portion 2, the wearer puts his / her finger between the fastening portion 43 and the main body portion 2. Insertion is prevented. As a result, unintended fastening release of the fastening tape 4a can be more reliably prevented, and the disposable diaper 1 can be more reliably prevented from being detached from the wearer.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

  The tape base material 41 of the fastening tape may be formed of a material other than the nonwoven fabric. Further, the separation structure that separates the tab portion 44 and the fastening portion 43 of the fastening tape does not necessarily need to be the weakening line 45 formed on the tape base material 41, and may be a separation structure of another aspect. Good.

  For example, when the tape base material 41 is formed of a plastic film such as polypropylene, the fastening tape 4b shown in FIG. 4 is substantially parallel to the tape width direction at a position approximately overlapping with the outer edge 421 of the fastening member 42. An extending thread-like or belt-like reinforcing film 46 is joined over the entire tape width direction of the tape base material 41 as a separation structure. In the fastening tape 4b, one end of the reinforcing film 46 is picked and pulled toward the other end, whereby the tape base material 41 is cut along the joint of the reinforcing film 46, and the tab portion 44 is stopped. It is removed from the adhesive tape 4b.

  Moreover, in the fastening tape 4c shown in FIG. 5, the notch 46a is formed as a separation structure at both edges in the tape width direction of the tape base material 41 formed of a plastic film. The notch 46 a is formed at a position approximately overlapping with the outer edge 421 of the fastening member 42, and the tape base material 41 is torn along approximately the edge 421 of the fastening member 42 from one of the notches 46 a. As a result, the tab portion 44 is removed from the fastening tape 4c.

  In the fastening tape 4d shown in FIG. 6, a tape base material 41a having a two-layer structure in which a first base material 411 and a second base material 412 are laminated is used. The fastening member 42 is joined to a position farthest from the rear portion 203 of the main body 2 of the first base material 411, and is opposite to the surface of the first base material 411 to which the fastening member 42 is joined. The second substrate 412 is attached to the surface so as to be peelable by heat fusion bonding, ultrasonic bonding, bonding with a hot melt adhesive, or the like. A part of the second base material 412 protrudes further outward from the outer edge 421 of the fastening member 42, and the projecting portion serves as a tab portion 44 of the fastening tape 4 d. In the fastening tape 4d, the tab portion 44 is removed by peeling the second base material 412 from the first base material 411. That is, the laminated structure of the first base material 411 and the second base material 412 in the tape base material 41 a is a separation structure that separates the fastening portion 43 and the tab portion 44.

  The fastening member of the fastening tape may be various members other than the hook-and-loop fastener. For example, an adhesive layer formed of an adhesive material may be provided on the tape substrate 41 as a fastening member. The separation structure such as the weakening line may be provided so as to overlap the adhesive material layer inside the outer edge of the adhesive material layer, and in this case, a part of the adhesive material layer is removed together with the tab portion 44.

  In the fastening tape, the fastening member 42 does not necessarily have to be attached on the tape base material 41. For example, the whole fastening tape may be formed by a hook-and-loop fastener. In this case, the tab portion 44 that cannot be engaged with the front portion 201 of the main body portion 2 is formed by crushing the hook structure that engages with the nonwoven fabric or the like at the outer end portion of the surface fastener, and the tab portion is formed. The entire region between 44 and the rear portion 203 of the main body 2 is a fastening portion 43.

  In the said embodiment, although a pair of fastening tape is provided in the disposable diaper 1, two or more pairs of fastening tapes may be provided. Further, the shape of the fastening tape is not necessarily limited to a substantially rectangular shape. For example, as shown in the fastening tape 4e of FIG. 7, two projecting portions 48 project from a substantially rectangular base portion 47. May be. In the fastening tape 4 e, a fastening member 42 is provided at each projecting portion 48, and a portion of the projecting portion 48 outside the fastening member 42 is a tab portion 44.

DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Main-body part 4, 4a-4e Fastening tape 21 Top sheet 22 Absorption core 23 Back sheet 41, 41a Tape base material 42 Fastening member 43 Fastening part 44 Tab part 45 Weak wire 46 Cutting film 46a Notch 201 Front part 202 Crotch part 203 Rear part 411 First base material 412 Second base material 421 Edge

Claims (5)

Disposable diapers,
A substantially sheet-like main body portion having a front portion, a crotch portion and a rear portion in order in the longitudinal direction, and an absorbent core disposed between the backsheet and the topsheet;
A pair of fastening tapes attached to both sides of the rear portion in the width direction and fastened to the front portion;
With
Each of the pair of fastening tapes
A fastening part that can be fastened to the front part;
A tab portion that is located outside the fixing portion in the width direction and cannot be fixed to the front portion;
A separation structure for removing the tab portion by separating the fastening portion and the tab portion;
A disposable diaper characterized by comprising. The disposable diaper according to claim 1,
Each of the pair of fastening tapes
A tape substrate;
A fastening member mounted on the tape substrate;
With
The fastening part is a laminated part of the tape base material and the fastening member,
The tab portion is a portion on the outer side in the width direction than the fastening member of the tape base material,
The disposable diaper, wherein the separation structure is a weakened line formed on the tape base material. The disposable diaper according to claim 2,
The disposable diaper, wherein the weakening line overlaps an outer edge of the fastening member. The disposable diaper according to claim 2 or 3,
The disposable diaper characterized in that the fastening member is provided on the tape base material over the entire tape width direction perpendicular to the direction in which the tape base material extends. The disposable diaper according to any one of claims 1 to 4,
The disposable diaper characterized in that in each of the pair of fastening tapes, the entire region between the rear portion and the tab portion is the fastening portion.

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