WO2015012129A1 - 使い捨ておむつ - Google Patents
使い捨ておむつ Download PDFInfo
- Publication number
- WO2015012129A1 WO2015012129A1 PCT/JP2014/068593 JP2014068593W WO2015012129A1 WO 2015012129 A1 WO2015012129 A1 WO 2015012129A1 JP 2014068593 W JP2014068593 W JP 2014068593W WO 2015012129 A1 WO2015012129 A1 WO 2015012129A1
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- WO
- WIPO (PCT)
- Prior art keywords
- disposable diaper
- width direction
- sheet
- product
- product width
- Prior art date
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- 0 CC1*CCCC1 Chemical compound CC1*CCCC1 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
- A61F13/49012—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region the elastic means being elastic panels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/56—Supporting or fastening means
- A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
- A61F13/5633—Supporting or fastening means specially adapted for diapers or the like open type diaper
Definitions
- the present invention relates to a disposable diaper.
- an absorbent body having a front waistline region, a back waistline region, and a crotch region, extending over the front waistline region and the back waistline region across the inseam region, and a fastening tape that fastens the front waistline region and the back waistline region,
- a disposable diaper provided is known (for example, see Patent Document 1).
- the fastening tape extends outward in the width direction from the outer end in the width direction of the rear waist region of the disposable diaper.
- the fastening tape of the rear waistline region is pulled to the front waistline region with the crotch part of the disposable diaper arranged at the inseam of the wearer, and the fastening tape is fixed to the front waistline region To do.
- an elastic member that expands and contracts in the width direction is disposed in the waist opening of the disposable diaper of Patent Document 1.
- the waist opening of the disposable diaper is closely attached to the wearer's waist by the expansion and contraction of the elastic member.
- the wearing assistant fastens the fastening tape on the bulge of the belly.
- the fastening tape is fastened on the belly bulge, the region extending in the width direction from the fastening tape is in close contact with the wearer's body, and the waist opening is contracted in the width direction of the elastic member, thereby Fit around.
- the dimension of the region extending in the width direction from the fastening tape matches the size of the belly around the wearer.
- the position of the disposable diaper may shift due to the movement of the wearer. For example, when the fastening position of the fastening tape of the disposable diaper is shifted to the crotch side, the region extending in the width direction from the fastening tape is shifted from the swelling of the wearer's belly. Therefore, the dimension of the area
- the present invention has been made in view of such a situation, and an object thereof is to provide a disposable diaper that can appropriately cover the bulge of the wearer's belly.
- a disposable diaper according to the present disclosure is located between a front waistline region (front waistline region 20), a rear waistline region (rear waistline region 30), and the front waistline region and the rear waistline region.
- Inseam area inseam area 25
- product longitudinal direction from the front waistline area to the rear waistline area
- product width direction orthogonal to the product longitudinal direction (product width direction W)
- An absorber that straddles the crotch region and extends to at least one of the front waistline region and the rear waistline region, and is disposed at an outer end portion in the product width direction of the rear waistline region
- a disposable diaper comprising a pair of fastening tapes (fastening tape 90) and a waist elastic sheet straddling a product width direction center of the disposable diaper and having elasticity in the product width direction, the waist expansion and contraction
- the seat has a rear waist elastic sheet (rear waist elastic sheet 85) disposed at the rear end of the disposable
- FIG. 1 is a developed plan view of a disposable diaper 10 according to the present embodiment in an expanded state.
- FIG. 2 is a plan view of a natural state of a part (rear end portion side) of the disposable diaper according to the present embodiment.
- FIG. 3 is a cross-sectional view of the disposable diaper along the line F1-F1 shown in FIG.
- FIG. 4 is a sectional view of the disposable diaper along the line F2-F2 shown in FIG.
- the disposable diaper 10 is sealed in a package or the like, the disposable diaper 10 is removed from the package and left in that state for 12 hours in an atmosphere of 20 ° C ⁇ 2 ° C and relative humidity 60% ⁇ 5% RH. It is in the state.
- a ridge is formed on the top sheet 50, the side flap 70, and the like constituting the disposable diaper.
- Disposable diaper 10 is a tape-type disposable diaper.
- the outer end of the front waistline in the product width direction and the outer end of the rear waistline in the product width direction are not joined before use, but are joined by fastening members such as fastening tape during use.
- a diaper is not joined before use, but are joined by fastening members such as fastening tape during use.
- the disposable diaper 10 has a front waistline region 20, a crotch region 25, and a back waistline region 30.
- the front waistline region 20 is a portion in contact with the wearer's front waistline portion (abdomen portion).
- the rear waistline region 30 is a portion in contact with the rear waistline portion (back portion) of the wearer.
- the crotch region 25 is located between the front waistline region 20 and the back waistline region 30.
- the direction from the front waistline region 20 to the rear waistline region 30 is referred to as a product longitudinal direction L
- a direction orthogonal to the product longitudinal direction L is referred to as a product width direction W.
- the disposable diaper 10 includes an absorbent body 40 that straddles the crotch region 25 and extends from the crotch region 25 toward at least one of the front waistline region 20 and the rear waistline region 30.
- the absorber 40 includes an absorbent core 40a and a core wrap 40b.
- the absorbent core 40a is the same as a conventional disposable diaper, and can be appropriately configured using a known member or material such as pulverized pulp or a superabsorbent polymer.
- the absorbent core 40a is wrapped with a sheet-like core wrap 40b.
- the core wrap 40b is a sheet that covers the absorbent core 40a. At least a part on the skin surface side of the core wrap 40b is constituted by various fiber nonwoven fabrics or tissue sheets having liquid permeability. For example, air-through nonwoven fabric of weight approximately 10 ⁇ 30g / m 2, spun bond nonwoven fabric, SMS can be used (spunbond - spunbond - meltblown) nonwoven or tissue sheet of the mass about 10 ⁇ 30g / m 2,.
- the rear waistline absorbent body 40 is provided with a low-rigidity portion 110 as a low-rigidity area that has a lower basis weight than other parts of the absorbent body or does not have the absorbent core 40a.
- the low-rigidity portion 110 has a shape in which the length in the product width direction gradually decreases from the product width direction center of the end portion on the rear waist region side of the absorber 40 toward the front waist region side. More specifically, it has a wedge shape in a plan view of the disposable diaper. Further, the boundary between the absorbent core 40a and the low-rigidity portion 110 is formed by an arc that is convex toward the center in the product width direction W.
- the absorber 40 on the outer side in the product width direction than the low-rigidity portion 110 has a trapezoidal shape that is convex toward the end on the rear waistline region side.
- a liquid-permeable top sheet 50 is provided on the surface side (skin contact surface side) of the absorber 40.
- a liquid-impermeable back sheet 60a is provided on the back side (non-skin contact surface side) of the absorber 40.
- An exterior sheet 60 is provided on the back surface side (non-skin contact surface side) of the back sheet 60a.
- the back sheet 60a is disposed on the inner side in the product longitudinal direction from the front end portion 10F of the disposable diaper and on the inner side in the product longitudinal direction from the rear end portion 10R of the disposable diaper.
- the back sheet 60a is disposed on the inner side in the product width direction than the end portion of the disposable diaper in the product width direction.
- the exterior sheet is disposed on the non-skin contact side surface of the disposable diaper.
- the exterior sheet is made of, for example, a nonwoven fabric.
- Side flaps 70 are respectively provided on side edges of the absorbent body 40 in the product width direction W.
- the side flap 70 straddles the front waistline region 20, the crotch region 25, and the rear waistline region 30, and is disposed outside the absorbent body 40 in the product width direction.
- the side flap 70 is comprised by the nonwoven fabric which piled up the 1 sheet or 2 or more sheets.
- a pair of leg openings 35 are formed in the side flap 70 of the disposable diaper 10.
- the leg opening 35 is provided at a side end portion in the product width direction of the disposable diaper, and is a portion that is disposed around the leg of the wearer while the disposable diaper is worn by the wearer.
- the leg opening 35 is recessed toward the center of the absorbent main body in the product width direction.
- the pair of side flaps 70 are each provided with a fastening tape 90.
- the fastening tape 90 is disposed at the outer end of the rear waistline region in the product width direction, and is fastened to the front waistline region.
- the fastening tape 90 extends outward from the side flap 70 in the product width direction.
- the disposable diaper 10 is held on the wearer's body by extending along the product width direction W and being fixed to the non-skin contact surface of the front waistline region 20.
- the target portion 95 is disposed on the non-skin contact surface in the front waistline region, and is configured such that the pair of fastening tapes 90 are fixed to each other.
- the front waistline region 20, the rear waistline region 30, and the fastening tape 90 constitute a waistline holding portion.
- the waistline holding portion of the rear waistline region 30 is a range extending in the product width direction from the region where the engaging portion of the fastening tape 90 is provided.
- the waistline holding portion of the front waistline region 20 is a range extending in the product width direction from the region where the target portion 95 is provided.
- the side flap 70 is provided with a pair of leg expansion / contraction portions 75 that are disposed on the inner side in the product width direction with respect to the leg opening 35 and on the outer side in the product width direction with respect to the absorber 40 and that can be expanded and contracted in the product longitudinal direction L.
- the leg expansion / contraction part 75 should just be comprised so that the leg opening part 35 can be expanded-contracted in a product longitudinal direction, may be arrange
- a pair of auxiliary stretchable parts 77 are disposed so as to straddle the crotch region 25 and the rear waistline region 30 and stretch in the product longitudinal direction.
- leg elastic part 75 and the auxiliary elastic part 77 are parts that are substantially contracted in the product longitudinal direction by an elastic member such as rubber thread, and a concept excluding a part where the elastic member is disposed in a state where the contracting force is not exerted. It is.
- the leg expansion / contraction part 75 is comprised by the three elastic members per one side which expand-contracts in a product longitudinal direction.
- the auxiliary expansion / contraction part 77 is constituted by one elastic member per one side that expands and contracts in the product longitudinal direction.
- the elastic member according to the present embodiment is made of polyurethane elastic fiber or natural rubber.
- the rear end 75R of the leg stretchable part 75 is disposed in front of the fastening tape 90 and on the inner side in the product width direction of the fastening tape. Therefore, the leg expansion / contraction part 75 contracts the front side of the fastening tape 90 and the inner side in the width direction.
- the front end 77F of the auxiliary expansion / contraction part 77 is arranged on the rear side of the front end 75F of the leg expansion / contraction part 75. Therefore, the region behind the front end portion 75F of the leg stretchable portion 75 is shrunk by the auxiliary stretchable portion 77.
- the rear end 77R of the auxiliary stretchable part 77 is arranged on the rear side of the rear end of the leg stretchable part. Therefore, the area behind the leg expansion / contraction part 75 contracts by the auxiliary expansion / contraction part 77.
- the leg stretchable part 75 can raise the crotch area of the disposable diaper toward the wearer's crotch. Further, the force pulled up by the leg stretchable part can be transmitted to the fastening tape 90 by the auxiliary stretchable part 77. Therefore, in a state where the fastening tape 90 is fastened, not only the region held around the waist of the wearer by the fastening tape 90 and the region where the leg stretchable portion 75 is disposed, but also between the fastening tape 90 and the leg stretchable portion 75. It becomes easy to make an area
- the region outside the product width direction can be shrunk from the leg stretchable portion by the auxiliary stretchable portion, and the buttocks can be appropriately covered by the side flaps in the rear waistline region.
- a leg opening part can be drawn toward the body side by shrinkage
- the leg elastic part 75 is disposed between the side flap 70 and the exterior sheet 60.
- the leg stretchable part 75 is disposed between the back sheet 60a and the side flap 70.
- the elongation ratio of the leg stretchable part 75 is preferably 1.7 to 2.4 times.
- the extension rate of the leg stretchable part 75 is set to 1.9 to 2.2 times.
- the extension rate of the auxiliary stretchable part 77 is preferably 1.6 to 2.4 times.
- this elongation rate shall be measured as follows, for example. 1stly, when the disposable diaper 10 is enclosed with the package etc., the disposable diaper 10 is taken out from a package. Subsequently, the arrangement
- Each sample is left for 60 minutes in an atmosphere of 20 ° C. ⁇ 2 ° C. and a relative humidity of 60% ⁇ 5% RH, and the length of the measurement object is measured along the expansion / contraction direction.
- This length is defined as “the length of a natural state measurement target (such as a leg stretchable part)”.
- the length in the stretch direction of the desired region in such a state (that is, the natural state), and the desired state when stretched from the natural state to a state where wrinkles due to the elastic member cannot be visually confirmed on the non-stretchable sheet
- the length of the region in the stretch direction is defined as “the length of the measurement target (eg, leg stretchable part) in the extended state”.
- the measurement of “length” in this specification is performed by the following measurement method.
- a sample that is taken out from the package and left in an atmosphere of 20 ° C. ⁇ 2 ° C. and a relative humidity of 60% ⁇ 5% RH for 12 hours is used.
- the length of this state of the measurement target part is measured so as to be along the measurement target part. Further, the length of the stretched state is measured by measuring the length of the measurement target portion when the disposable diaper 10 is stretched from a natural state to a state where wrinkles due to the elastic member cannot be visually confirmed.
- the above-described measurement was performed in each state, and the average value was defined as the length.
- a pair of leg side gathers 80 extending along the product longitudinal direction L are provided inside the pair of leg stretchable portions 75 (near the center in the product width direction W).
- the leg side gathers 80 are provided at the inner end of the side flap 70 in the product width direction, and are erecting and expanding gathers disposed on the inner side in the product width direction than the leg stretchable parts 75.
- the leg side gathers 80 are arranged on the inner side in the product width direction than the leg stretchable parts 75.
- the leg side gathers 80 can adopt a conventionally well-known configuration. Specifically, the leg side gathers 80 may be formed of a sheet material different from the side flaps 70.
- the disposable diaper 10 has a waist elastic sheet that straddles the center of the disposable diaper in the product width direction and has elasticity in the product width direction.
- the waist elastic sheet has a rear waist elastic sheet 85 disposed at the rear end of the disposable diaper and a front waist elastic sheet 86 disposed at the front end of the disposable diaper.
- the virtual line L1 which passes along the product width direction center of a disposable diaper and extends in a product longitudinal direction is shown.
- the rear end portion 10R of the disposable diaper has a curved shape in which the product width direction center of the rear end portion 10R is recessed in the product longitudinal direction inner side than the product width direction outer side of the rear end portion 10R in the natural state of the disposable diaper.
- the rear end portion of the rear waist elastic sheet 85 located at the rear end portion of the disposable diaper also has a curved shape in which the center in the product width direction is recessed in the product longitudinal direction inner side than the product width direction outer side in the natural state.
- the front end 85F of the rear waist elastic sheet 85 has a product width direction center of the front end 85F in the product width direction of the front end 85F. It has a curved shape that is recessed outward in the product longitudinal direction from the outside.
- the curved shape of the rear waist elastic sheet is not formed in the entire front end portion 85F, but is formed in the center in the width direction which is a part of the front end portion.
- the rear waist elastic sheet 85 is disposed between a pair of fastening tapes in the product width direction. Part of the front end 85F of the rear waist elastic sheet 85 overlaps the absorber. The rear end 85R of the rear waist elastic sheet 85 coincides with the rear end of the disposable diaper.
- the length of the rear waist elastic sheet 85 in the product width direction is longer than the length of the absorbent body 40 in the product width direction, and is longer than the length of the back sheet 60a in the width direction.
- the rear waist elastic sheet extends outward from the absorbent body 40 in the product width direction, and extends outward from the back sheet 60a in the product width direction.
- the front end portion 10F of the disposable diaper has a curved shape in which the center of the front end portion 10F in the product width direction is recessed in the product longitudinal direction inside of the front end portion 10F in the product width direction outside in the natural state of the disposable diaper.
- the front end 86F of the front waist elastic sheet 86 located at the front end of the disposable diaper is also longer than the outside in the product width direction of the front end 86F in the product width direction center of the front end 86F in the natural state of the disposable diaper. It has a curved shape that is recessed inward.
- the rear end 86R of the front waist elastic sheet 86 is a product whose center in the product width direction of the rear end 86R is the rear end 86R. It has a curved shape that is recessed outward in the longitudinal direction of the product than outside in the width direction.
- the curved shape of the front waist elastic sheet is not formed in the entire rear end 86R, but is formed in the center in the width direction which is a part of the rear end 86R.
- the rear end 86R of the front waist elastic sheet 86 is adjacent to the absorber 40 and adjacent to the target portion 95 in the product longitudinal direction.
- the rear end portion 86R of the front waist elastic sheet 86 is located outside the absorber 40 and outside the target portion 95 in the product longitudinal direction.
- the front end 86F of the front waist elastic sheet 86 coincides with the front end of the disposable diaper.
- the length of the front waist elastic sheet 86 in the product width direction is longer than the length of the absorbent body 40 in the product width direction, and is longer than the length of the back sheet 60a in the width direction.
- the front waist elastic sheet 86 extends outward from the absorber 40 in the product width direction, and extends outward from the back sheet 60a in the product width direction.
- the waist stretchable sheet is a sheet in which the width of the sheet in the second direction perpendicular to the extending direction becomes narrow (so-called width) when the sheet expands in one direction.
- the waist stretchable sheet is a sheet made of a mixture of elastic fibers having elastic extensibility and non-elastic fibers having non-elastic extensibility, particularly a mass of 20 to 80 g / m 2 , more preferably 40 to 75 g / m 2.
- a spunbond nonwoven sheet can be used.
- the non-elastic fiber / elastic fiber non-woven fabric is stretched by breaking a part of the non-elastic fiber layer with a gear.
- waist elastic sheet if it is a sheet with a width, it can be relatively easily formed into a width with this configuration.
- a waist elastic sheet is not restricted to a nonwoven fabric sheet, You may be comprised with the film sheet. It is also possible to use a sheet formed in advance so that the length of the stretchable sheet in the product changes in advance (cuts so as to be convex inward).
- the elongation percentage of the rear waist elastic sheet 85 is preferably 1.4 to 1.8 times. In the present embodiment, the elongation ratio of the rear waist elastic sheet 85 is set to 1.5 to 1.6 times.
- the elongation percentage of the front waist elastic sheet 86 is preferably 1.3 to 1.7 times.
- the stretch rate of the front waist elastic sheet 86 is set to 1.4 to 1.6 times.
- the waist elastic sheet is disposed between the exterior sheet 60 and the back sheet 60a.
- the waist stretchable sheet is disposed between the core wrap 40b and the back sheet 60a or the exterior sheet 60.
- the position of the waist elastic sheet is not particularly limited. Further, in a region where the absorbent body is not disposed, it may be disposed between the side flap 70 and the back sheet 60a or the exterior sheet 60.
- the rear waist elastic sheet 85 is disposed so as to overlap with a part of the low-rigidity portion 110 of the absorbent body in a plan view of the disposable diaper.
- the rear waist elastic sheet 85 is disposed so as to overlap a part of the low rigidity portion 110, but the entire rear waist elastic sheet 85 is disposed so as to overlap. May be.
- the low rigidity portion 110 By forming such a low rigidity portion 110, the expansion and contraction of the rear waist elastic sheet 85 is not hindered, and even if the rear waist elastic sheet 85 contracts, the low rigidity portion 110 narrows and the low rigidity portion Since the gap between the absorbent bodies on both sides in the product width direction is narrower than 110, the absorbent body 40 is unlikely to rise in an unintended shape.
- the low-rigidity portion 110 is preferably narrower than the width of the rear waist elastic sheet 85 in consideration of prevention of excrement leakage.
- the waist elastic sheet which concerns on this embodiment is comprised so that it may expand-contract in a product width direction
- Fastening tape 90 is attached to the region of the side flap 70 corresponding to the rear waistline region 30.
- the fastening tape 90 is provided with a base sheet 91 connected to the side flap 70, an engagement hook (not shown) as a plurality of engagement members, and a hook sheet 92 fixed to the base sheet 91; Is provided.
- the hook sheet 92 is an area where an engagement member is provided, and the waistline holding portion in the above-described rear waistline area is an area extending from the hook sheet 92 in the product width direction.
- the hook sheet 92 is fixed to the base sheet 91, specifically, bonded.
- the hook sheet 92 and the base sheet 91 are preferably joined so that the rigidity of the fastening tape 90 does not become higher than necessary.
- the hook sheet 92 and the base sheet 91 are joined by a hot melt adhesive applied intermittently such as a dot shape, a line shape, or a spiral shape.
- the hook sheet 92 and the base sheet 91 may be joined by heat sealing or the like.
- the base sheet 91 is composed of one or two or more non-woven fabrics stacked.
- a nonwoven fabric manufactured by a manufacturing method such as spunbond (SB) or spunbond-meltblown-spunbond (SMS) can be used.
- the basis weight of the nonwoven fabric constituting the base sheet 91 is 30 to 120 g / m 2 , preferably 40 to 90 g / m 2 .
- the fastening tape includes a base portion 93 that overlaps the exterior sheet, and an extending portion 94 that extends outward in the product width direction from the exterior sheet.
- the base portion 93 is a portion of the base sheet 91 that overlaps the exterior sheet in a state where the fastening tape is developed.
- the extending portion 94 is a portion of the base sheet 91 that does not overlap the exterior sheet.
- the product longitudinal direction center of the extension part coincides with the product longitudinal direction center of the base part in the product longitudinal direction.
- the position of the fastening tape changes with the curvature of the rear waist elastic sheet 85, and the product longitudinal center of the extension is outside the product longitudinal center of the base. Located in.
- the state in which the members are overlapped is a concept including not only a state in which the members are directly overlapped but also a state in which the members are indirectly overlapped (a state in which other members are sandwiched therebetween).
- the target portion 95 is provided on the non-skin contact side surface of the exterior sheet 60 in the front waistline region.
- the target portion 95 is configured so that the engaging hook of the fastening tape is hooked, and functions as a loop of a hook and loop locking system.
- an air-through nonwoven fabric can be used as the target portion.
- a fiber nonwoven fabric made of a polyolefin-based thermoplastic synthetic resin fiber or a polyolefin-based thermoplastic synthetic resin film can be used.
- the loop attached to the target portion can be formed of a polyolefin-based thermoplastic synthetic resin.
- a non-woven fabric which is a bulky non-woven fabric and which is partly embossed to prevent fluffing on the non-woven fabric surface may be used.
- the exterior sheet 60 of the disposable diaper is formed of non-woven fabric, and the design indicating the attachment position of the fastening tape 90 is printed on the back sheet 60a or the non-skin contact side surface of the exterior sheet 60, or the design sheet is printed on the back sheet. It can also be set as the target portion by arranging it on the non-skin contact side of 60a or the exterior sheet 60.
- the wearing assistant pulls the fastening tape in the rear waistline region toward the front waistline region.
- the wearing assistant attaches the fastening tape to the target portion in a state where the fastening tape is drawn to the front waistline region.
- FIG. 5 shows a state where the disposable diaper according to the present embodiment is worn on the wearer.
- FIG. 5 shows a state in which the disposable diaper is mounted so that the fastening position of the fastening tape is stopped on the crotch side and the inner side in the width direction, and pulled up in the width direction while pulling up the front waistline region.
- FIG. 6 is a diagram showing a deformation mode of the rear waist elastic sheet when the rear waistline region of the disposable diaper is pulled in the width direction via the fastening tape.
- (A) has shown the state before a deformation
- (b) is the state pulled to the product width direction outer side from (a)
- (c) is the state which further pulled the fastening tape.
- the rear end of the disposable diaper is curved such that the center in the product width direction of the rear end is recessed more inward in the product longitudinal direction than in the product width direction outside of the rear end.
- the front side edge part of a back side waist elastic sheet is a curved shape where the product width direction center of a front side edge part is dented in the product longitudinal direction outer side rather than the product width direction outer side of a front side edge part.
- the state shown in FIG. 6B is obtained.
- the rear end of the disposable diaper is pulled in the width direction.
- the rear side end portion of the disposable diaper has a curved shape in which the center in the product width direction of the rear side end portion is recessed more inward in the product longitudinal direction than the outer side in the product width direction of the rear side end portion.
- the front side edge part of a back side waist elastic sheet is the curved shape where the product width direction center of a front side edge part dents in the product longitudinal direction outer side rather than the product width direction outer side of a front side edge part.
- the rear end of the disposable diaper is substantially parallel to the product width direction.
- the front end portion of the rear waist elastic sheet has a curved shape in which the center in the product width direction of the front end portion is recessed outward in the product longitudinal direction from the outer side in the product width direction of the front end portion.
- the length in the width direction of the rear side end part of the disposable diaper is at a position inside the product longitudinal direction from the rear side end part. It is longer than the length in the width direction. Therefore, the rear side end of the disposable diaper tends to extend in the width direction.
- the amount of extension by the waist elastic sheet at the rear end of the disposable diaper is It becomes larger than the amount of extension by the waist elastic sheet at the position inside the product longitudinal direction from the end (for example, the front side edge of the rear waist elastic sheet). Therefore, the urging force of the rear waist elastic sheet increases as it goes outward in the product longitudinal direction.
- the rear end portion of the rear waist elastic sheet can be pulled outward in the width direction while pulling up the front waistline region.
- the manufacturing method of a disposable diaper includes at least a component forming process, a component placing process, a leg-hole forming process, and a cutting process.
- the manufacturing method of a disposable diaper manufactures the continuous body in which the disposable diaper is continuous in the product longitudinal direction, and cuts the continuous body into the size of one product along the product width direction W. Produce diapers.
- the components constituting the disposable diaper are formed.
- the absorbent body 40 is molded by laminating absorbent materials.
- the waist elastic sheet On the continuous web constituting the back sheet, the waist elastic sheet, other webs such as the continuous web constituting the top sheet, the absorbent body, the leg elastic part 75, the auxiliary elastic part 77, etc.
- the components constituting the disposable diaper 10 are placed.
- the waist elastic sheet is a state in which the front waist elastic sheet 86 of any disposable diaper and the rear waist elastic sheet 85 of the disposable diaper adjacent to the arbitrary disposable diaper are integrated. Hold both ends of the waist elastic sheet (the part that becomes the outer edge of the product width direction when molded into a disposable diaper) with suction means, etc., and extend the waist elastic tote in the product width direction of the disposable diaper. Affix on a continuous web. Since the waist stretchable sheet is stretched in a state where both ends of the waist stretchable sheet are held, both ends of the waist stretchable sheet hardly stretch. The elongation rate in the product width direction of both ends of the waist elastic sheet is lower than the elongation rate in the product width direction of the region between the both ends.
- the region where the waist elastic sheet of the disposable diaper is arranged.
- the center of the product width direction of the area where the waist elastic sheet is arranged is the central area
- the end part of the product width direction of the area where the waist elastic sheet is arranged is the side area.
- the region between the side region and the side region is defined as an intermediate region
- the relationship between the elongation rate is as follows: elongation rate in the product width direction of the central region> elongation rate in the product width direction of the intermediate region> elongation rate in the product width direction of the side region .
- the elongation rate in the product width direction of the central region can be 1.4 to 1.8.
- the expansion rate in the product width direction of the side region is set lower than the expansion rate in the product width direction of the central region, and can be 1.0 to 1.1 times.
- the expansion rate in the product width direction of the intermediate region is set lower than the expansion rate in the product width direction of the central region and higher than the expansion rate of the side region, and may be 1.2 to 1.3 times. it can.
- the side region may be a region where the expansion rate in the product width direction is 1.0 times and the side region does not substantially extend.
- the stretchable sheet stretched in the product width direction enters into the product longitudinal direction.
- the product width direction center of the stretchable sheet has a width. Therefore, in the stretchable stretch sheet, the length in the product longitudinal direction at the center in the product width direction is shorter than the length in the product longitudinal direction at the end in the product width direction.
- the stretchable sheet affixed in a state where the width is included is a rear end portion and a rear waist stretchable portion of the front waist stretchable sheet corresponding to the end portion in the product longitudinal direction of the stretchable sheet.
- the front end of the sheet has a curved shape in which the center in the width direction is recessed from the outside in the width direction.
- the top sheet 50, the exterior sheet 60, and the back sheet 60a are cut.
- the front end 77F of the auxiliary telescopic part 77 is cut, and the leg opening 35 is formed around the wearer's leg.
- the continuous body in which the top sheet 50, the back sheet 60a, the absorber 40, and the like are arranged is cut into a product size along the product width direction W. Thereby, the disposable diaper 10 is manufactured.
- the stretched state of the waist stretchable sheet and the leg stretchable portion provided in the disposable diaper is released, and a natural state is obtained.
- the waist stretchable sheet that is in the width state at the time of expansion is deformed so as to return to the state before the width is entered. Therefore, although the rear side edge part of the rear side waist elastic sheet and the front side edge part of the front side waist elastic sheet were linear in the expansion
- the front end of the front waist elastic sheet contracts more than the rear end of the front waist elastic sheet so that the center of the front end of the disposable diaper is in the product width direction outside of the front end of the disposable diaper. It becomes a curved shape that is recessed more inward in the product longitudinal direction.
- the center in the product width direction of the rear end of the disposable diaper is the rear side of the disposable diaper. It becomes a curved shape which is dented in the product longitudinal direction inner side rather than the product width direction outer side of an edge part.
- the front side edge part of a front waist elastic sheet shrinks rather than the rear side edge part of a front waist elastic sheet, and the back side of a rear waist elastic sheet
- the end portion contracts more than the front end portion of the rear waist elastic sheet.
- the front end of the front waist stretchable sheet is farther from the absorbent core 40a than the rear end of the front waist stretchable sheet and contracts because the rigidity of the absorbent core 40a is not affected.
- the rear end portion of the rear waist elastic sheet is farther from the absorbent core 40a than the front end portion of the rear waist elastic sheet, and contracts because the rigidity of the absorbent core 40a is not affected.
- a rear waist elastic sheet is arranged at the rear end of the disposable diaper, and is configured to easily expand and contract in the width direction, and the rear end of the disposable diaper has a curved shape in a natural state.
- the rear end of the disposable diaper can be more easily contracted.
- the waist stretchable sheet positioned at the rear end can be pulled outward in the width direction while pulling up the front waistline region. For example, even when the position of the disposable diaper is shifted, it can be pulled outward in the width direction while pulling up the front waistline region, and it is easy to maintain the state of covering the belly bulge.
- the rear waist elastic sheet is arranged so as to overlap the waistline holding part. More preferably, the rear waist elastic sheet is disposed beyond the product longitudinal direction center of the waistline holding portion, and more preferably is disposed beyond the crotch side end portion of the waistline holding portion in the product longitudinal direction. Since the waistline holding part that holds the disposable diaper on the wearer's body can be contracted in the width direction by the waist shrinking part, the waistline holding part can be placed around the wearer's belly even when the wearing position of the disposable diaper is shifted. Can continue to fit.
- the rear end of the rear waist elastic sheet does not overlap the absorber, and the front end of the rear waist elastic sheet overlaps the absorber.
- the absorber has relatively high rigidity in the constituent members constituting the disposable diaper. Therefore, the part which overlaps with the absorber of a back side waist elastic sheet is more difficult to shrink than the part which does not overlap with an absorber.
- the rear side end portion of the rear waist elastic sheet is more easily contracted than the front side end portion of the rear waist elastic sheet, and a pulling effect on the front waistline region side can be achieved when the rear waist elastic sheet is attached.
- the rear end portion of the absorber is provided with a low rigidity portion.
- the rear end portion of the absorbent body is easily developed in the width direction, and the rear end portion of the waist stretchable sheet is further easily extended in the product width direction when being attached. Therefore, in the state which mounted
- the front end of disposable diapers may be placed on the bulge of the wearer's belly. At this time, if the front torso end is parallel to the width direction, it is considered that the belly does not follow the curved shape. However, the front end portion can be arranged along the belly bulge by the front end portion having the curved shape.
- the product longitudinal center of the extension is located outside the product longitudinal center of the base. That is, in the natural state of the disposable diaper, the extending direction of the extending portion of the fastening tape is not parallel to the product width direction, and is inclined toward the product longitudinal direction outer side from the width direction inner side to the width direction outer side. .
- the extending portion of the fastening tape is on the outer side in the longitudinal direction from the base portion, the extending portion is easily arranged on the crotch side with respect to the base portion in a state where the fastening tape is fixed to the front side. Therefore, the pulling force by the fastening tape is likely to act on the rear side and the upper side.
- the back film is arranged on the inner side in the product longitudinal direction from the rear end of the disposable diaper.
- the portion where the liquid-impermeable back sheet is disposed has higher rigidity than the portion where the back sheet is not disposed, and is difficult to extend.
- the rear end of the disposable diaper can be easily expanded in the width direction, and the rear end of the waist stretchable sheet can be more easily extended in the width direction when worn. Can do.
- the prosthetic waist elastic sheet may not be disposed so as to overlap the waistline holding portion.
- the rear waist elastic sheet may be disposed so as not to overlap the absorber, and the front waist elastic sheet may be disposed so as to overlap the absorber.
- the low rigidity region may not be formed in the absorber 40.
- the disposable diaper may not have a front waist elastic sheet.
- the product longitudinal center of the extension part may coincide with the product longitudinal center of the base in the product longitudinal direction, or the product longitudinal direction center of the base in the product longitudinal direction. It may be located inside the direction.
- the back film may extend to the rear end of the disposable diaper, may extend to the front end of the disposable diaper, or may extend to the product width direction end of the disposable diaper. Good.
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Abstract
Description
図1は、本実施形態に係る使い捨ておむつ10の伸長状態の展開平面図である。図2は、本実施形態に係る使い捨ておむつの一部分(後側端部側)の自然状態の平面図である。図3は、図1に示したF1-F1線に沿った使い捨ておむつの断面図である。図4は、図1に示したF2-F2線に沿った使い捨ておむつの断面図である。
レッグ伸縮部の伸長率=(伸長状態のレッグ伸縮部の長さ)÷(自然状態のレッグ伸縮部の長さ)
補助伸縮部の伸長率=(伸長状態の補助伸縮部の長さ)÷(自然状態の補助伸縮部の長さ)
第1に、使い捨ておむつ10がパッケージ等に封入されている場合には、パッケージから使い捨ておむつ10を取り出す。次いで、レッグ伸縮部等の測定対象の配置領域を切り出す。このとき、レッグ伸縮部等の測定対象が接合される外装シートも含めて切り出す。切り出した後のサンプルの伸長率を測定して、測定対象の伸長率を計測する。
これら測定結果を用い、上述の式にて算出することで伸長率が測定される。
使い捨ておむつ10がパッケージなどに封入されている場合には、パッケージから取り出し、その状態にて20℃±2℃、相対湿度60%±5%RHの雰囲気下において12時間放置したサンプルを用いる。
ここで、10サンプルに対して、それぞれの状態で上述の測定を行い、その平均値を、長さとした。
ウエスト伸縮シートは、弾性的な伸長性を有する弾性繊維と非弾性的な伸長性を有する非弾性繊維との混合物によるシート、特に20~80g/m2の質量より好ましくは40~75g/m2の質量、さらに好ましくは50~70g/m2の質量を有するスパンボンド不織布であって、弾性繊維が2~6dtexの繊度を有するポリウレタン繊維のフィラメントであり、非弾性繊維が2~6dtexの繊度を有するポリオレフィン繊維、ポリエステル繊維およびポリアミド繊維のフィラメントのうちの少なくとも一つのフィラメントであって、弾性繊維と前記非弾性繊維との重量混合比が40:60~60:40の範囲にて配合されているスパンボンド不織布シートを用いることができる。非弾性繊維と弾性繊維との混合繊維の不織布を、ギアにて非弾性繊維層の一部を破断することによって伸縮性を発現させる。他のウエスト伸縮シートとしては、幅入りするシートであれば、比較的容易に本構成の幅入りした形状とする事ができる。なお、ウエスト伸縮シートは、不織布シートに限られず、フィルムシートによって構成されていてもよい。また、伸縮性シートを予め、製品における長手方向の幅が変化するように(内向きに凸となるようにカットする)予め成形したシートを用いることも可能である。
後側ウエスト伸縮シートの伸長率=(伸長状態の後側ウエスト伸縮シートの長さ)÷(自然状態の後側ウエスト伸縮シートの長さ)
前側ウエスト伸縮シートの伸長率=(伸長状態の前側ウエスト伸縮シートの長さ)÷(自然状態の前側ウエスト伸縮シートの長さ)
次に、本実施形態に係る使い捨ておむつの製造方法の一例について説明する。なお、本実施形態において説明しない方法については、既存の方法を用いることができる。また、以下に説明する製造方法は、一例であり、他の製造方法によって製造することもできる。使い捨ておむつの製造方法は、構成部品形成工程と、構成部品載置工程と、脚回り形成工程と、切断工程とを少なくとも含む。
使い捨ておむつの後側端部に後側ウエスト伸縮シートが配置され、幅方向に伸縮しやすく構成され、かつ自然状態で使い捨ておむつの後側端部が湾曲形状であるため、使い捨ておむつの後側端部をより収縮させ易くできる。使い捨ておむつを着用者に装着した状態で、後側端部に位置するウエスト伸縮シートによって、前胴回り域を引き上げつつ幅方向外側に引っ張ることができる。例えば、使い捨ておむつの位置がずれた場合であっても、前胴回り域を引き上げつつ幅方向外側に引っ張ることができ、腹の膨らみを覆った状態を維持し易くなる。
上述したように、本発明の実施形態を通じて本発明の内容を開示したが、この開示の一部をなす論述及び図面は、本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施形態、実施例及び運用技術が明らかとなる。
20 :前胴回り域
25 :股下域
30 :後胴回り域
35 :レッグ開口部
40 :吸収体
40a :吸収性コア
40b :コアラップ
50 :トップシート
60 :外装シート
60a :バックシート
70 :サイドフラップ
75 :レッグ伸縮部
75F :前側端部
75R :後側端部
77 :補助伸縮部
77F :前側端部
77R :後側端部
80 :レッグサイドギャザー
81 :弾性部材
85 :後側ウエスト伸縮シート
85F :前側端部
85R :後側端部
86 :前側ウエスト伸縮シート
86F :前側端部
86R :後側端部
90 :ファスニングテープ
91 :基材シート
92 :フックシート
93 :基部
94 :延出部
95 :ターゲット部
110 :低剛性部
L :製品長手方向
W :製品幅方向
Claims (7)
- 前胴回り域と、後胴回り域と、前記前胴回り域と前記後胴回り域との間に位置する股下域と、
前記前胴回り域から前記後胴回り域に向かう製品長手方向と、
前記製品長手方向と直交する製品幅方向と、
前記股下域を跨ぎ、前記前胴回り域及び前記後胴回り域の少なくとも一方に延びる吸収体と、
前記後胴回り域の製品幅方向の外側端部に配置され、前記前胴回り域に止着する一対のファスニングテープと、
使い捨ておむつの製品幅方向中心を跨がり、前記製品幅方向に伸縮性を有するウエスト伸縮シートと、を備える使い捨ておむつであって、
前記ウエスト伸縮シートは、前記使い捨ておむつの後側端部に配置された後側ウエスト伸縮シートを有しており、
前記使い捨ておむつの前記後側端部は、前記使い捨ておむつの自然状態において、製品幅方向中心が製品幅方向外側よりも前記製品長手方向内側に凹む湾曲形状を有する、使い捨ておむつ。 - 前記前胴回り域及び前記後胴回り域において、製品幅方向に沿って延び、使い捨ておむつを着用者の身体に保持する胴回り保持部を備え、
前記後側ウエスト伸縮シートは、前記胴回り保持部に重なって配置される、請求項1に記載の使い捨ておむつ。 - 前記吸収体は、前記後胴回り域の前記後側端部よりも製品長手方向内側に配置され、
前記後側ウエスト伸縮シートの前側端部は、前記吸収体に重なって配置される、請求項1又は請求項2に記載の使い捨ておむつ。 - 前記吸収体には、吸収体の他の部位よりも目付けが低い、または吸収性コアが存在しない低剛性領域が設けられており、
前記低剛性領域は、前記吸収体の後側端部の製品幅方向中央から前記前胴回り域側に向かって製品幅方向の長さが短くなる形状である、請求項1から請求項3のいずれかに記載の使い捨ておむつ。 - 前記ウエスト伸縮シートは、前記使い捨ておむつの前側端部に配置された前側ウエスト伸縮シートを有しており、
前記使い捨ておむつの前側端部は、前記使い捨ておむつの自然状態において、製品幅方向中心が製品幅方向外側よりも前記製品長手方向内側に凹む湾曲形状である、請求項1から請求項4のいずれかに記載の使い捨ておむつ。 - 少なくとも前記後胴回り域において、前記吸収体の非肌当接面側に配置される外装シートを備え、
前記ファスニングテープは、前記外装シートに重なる基部と、前記外装シートよりも前記製品幅方向外側に延出する延出部と、を備え、
前記使い捨ておむつの自然状態において、前記延出部の前記製品長手方向中心は、前記基部の前記製品長手方向中心よりも前記製品長手方向外側に位置する、請求項1から請求項5のいずれかに記載の使い捨ておむつ。 - 少なくとも前記後胴回り域において前記吸収体の非肌当接面側に配置される液不透過性のバックフィルムを備え、
前記バックフィルムは、前記後胴回り域の前記後側端部よりも製品長手方向内側に配置される、請求項1から請求項6のいずれかに記載の使い捨ておむつ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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AU2014294292A AU2014294292B2 (en) | 2013-07-26 | 2014-07-11 | Disposable diaper |
CN201480042310.8A CN105407849B (zh) | 2013-07-26 | 2014-07-11 | 一次性尿布 |
KR1020167001149A KR102312228B1 (ko) | 2013-07-26 | 2014-07-11 | 일회용 기저귀 |
PH12016500186A PH12016500186A1 (en) | 2013-07-26 | 2016-01-26 | Disposable diaper |
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JP2013156030A JP6193666B2 (ja) | 2013-07-26 | 2013-07-26 | 使い捨ておむつ |
JP2013-156030 | 2013-07-26 |
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WO2015012129A1 true WO2015012129A1 (ja) | 2015-01-29 |
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AU (1) | AU2014294292B2 (ja) |
MY (1) | MY168983A (ja) |
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JP2009207660A (ja) * | 2008-03-04 | 2009-09-17 | Oji Nepia Co Ltd | 吸収性物品 |
JP5243655B1 (ja) * | 2012-11-27 | 2013-07-24 | ユニ・チャーム株式会社 | 使い捨ておむつ |
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US5938652A (en) * | 1996-06-19 | 1999-08-17 | Kimberly-Clark Worldwide, Inc. | Absorbent article having a selectively elasticized waist flap |
JP3340032B2 (ja) * | 1996-09-30 | 2002-10-28 | ユニ・チャーム株式会社 | 使い捨ておむつ |
JP3737725B2 (ja) * | 2001-08-31 | 2006-01-25 | ユニ・チャーム株式会社 | 開放型の使い捨て着用物品 |
JP2004105315A (ja) * | 2002-09-13 | 2004-04-08 | Uni Charm Corp | 月齢対応使い捨てオムツ |
US20050148985A1 (en) * | 2003-12-30 | 2005-07-07 | Bronk Susan K. | Absorbent article having improved waist feature |
US7905872B2 (en) * | 2004-06-04 | 2011-03-15 | The Procter & Gamble Company | Absorbent articles comprising a slow recovery stretch laminate |
JP4417794B2 (ja) | 2004-07-06 | 2010-02-17 | 大王製紙株式会社 | テープ式紙おむつ |
JP4912198B2 (ja) * | 2007-03-30 | 2012-04-11 | 大王製紙株式会社 | パンツ型使い捨ておむつ |
EA201001317A1 (ru) * | 2008-02-19 | 2011-04-29 | Юничарм Корпорейшн | Поглощающее изделие |
US8016971B2 (en) * | 2008-12-15 | 2011-09-13 | Kimberly-Clark Worldwide, Inc, | Method for making a waist relief feature |
JP5832761B2 (ja) * | 2011-03-01 | 2015-12-16 | ユニ・チャーム株式会社 | 吸収性着用物品 |
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JP2009207660A (ja) * | 2008-03-04 | 2009-09-17 | Oji Nepia Co Ltd | 吸収性物品 |
JP5243655B1 (ja) * | 2012-11-27 | 2013-07-24 | ユニ・チャーム株式会社 | 使い捨ておむつ |
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CN105407849B (zh) | 2018-09-14 |
TWI661816B (zh) | 2019-06-11 |
KR20160037885A (ko) | 2016-04-06 |
AU2014294292B2 (en) | 2018-03-08 |
CN105407849A (zh) | 2016-03-16 |
PH12016500186B1 (en) | 2016-05-02 |
TW201529056A (zh) | 2015-08-01 |
AU2014294292A1 (en) | 2016-02-25 |
PH12016500186A1 (en) | 2016-05-02 |
SA516370469B1 (ar) | 2019-11-13 |
KR102312228B1 (ko) | 2021-10-14 |
JP6193666B2 (ja) | 2017-09-06 |
JP2015024048A (ja) | 2015-02-05 |
MY168983A (en) | 2019-01-29 |
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