CN104736117A - Disposable diaper - Google Patents

Disposable diaper Download PDF

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Publication number
CN104736117A
CN104736117A CN201480002488.XA CN201480002488A CN104736117A CN 104736117 A CN104736117 A CN 104736117A CN 201480002488 A CN201480002488 A CN 201480002488A CN 104736117 A CN104736117 A CN 104736117A
Authority
CN
China
Prior art keywords
region
width
disposable diaper
absorbent core
pars contractilis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201480002488.XA
Other languages
Chinese (zh)
Other versions
CN104736117B (en
Inventor
山中康弘
深山拓也
坂口智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unicharm Corp
Original Assignee
Unicharm Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2014214860A external-priority patent/JP5697790B1/en
Application filed by Unicharm Corp filed Critical Unicharm Corp
Publication of CN104736117A publication Critical patent/CN104736117A/en
Application granted granted Critical
Publication of CN104736117B publication Critical patent/CN104736117B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • A61F13/58—Adhesive tab fastener elements
    • 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
    • A61F13/62—Mechanical fastening means, ; Fabric strip fastener elements, e.g. hook and loop
    • A61F13/622—Fabric strip fastener elements, e.g. hook and loop
    • 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
    • A61F13/64—Straps, belts, ties or endless bands
    • 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
    • A61F2013/5666—Supporting or fastening means connected to itself

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The invention provides a disposable diaper (10) equipped with a waist flexible portion (85) configured between a pair of snap buckling belts. The waist flexible portion (85) extends toward two outer sides of the width direction from the center of the width direction of the disposable diaper and is provided with a first area (851) extending from the two outer edges of the waist flexible portion to the inner side of the width direction, a second area (852) extending from the inner edge of the first area to the inner side of the width direction and provided with elongation lower than that of the first area, and a third area (853) extending from the inner edge of the second area to the inner side of the width direction and provided with elongation higher than that of the second area. At least a part of the first area is located at the outer side of the width direction of an absorptive core.

Description

Disposable diaper
Technical field
The present invention relates to a kind of disposable diaper.
Background technology
In the past, the disposable diaper of the belt of the stickiness of the waistline maintaining wearer is well known to.The disposable diaper of patent documentation 1 has the multiple stretching regions can stretched in the direction of the width at the waistline of wearer.Between a pair magic tape, in the direction of the width compartment of terrain is provided with this stretching region multiple.The percentage elongation of multiple stretching region is different.
prior art document
patent documentation
Patent documentation 1: Japanese Unexamined Patent Application Publication 2007-530166 publication
Summary of the invention
the problem that invention will solve
But there is following problem in above-mentioned disposable diaper.
Because the stretching region of the disposable diaper of patent documentation 1 is in the direction of the width across compartment of terrain configuration, therefore adjacent stretching region does not link each other.Thus, each stretching region is shunk independently, thus disposable diaper cannot be made suitably to fit in waistline entirety.
Therefore, namely the present invention makes in view of above-mentioned problem, its object is to, and provides a kind of disposable diaper that can improve the belt of the stickiness of waistline.
for the scheme of dealing with problems
Disposable diaper of the present disclosure (disposable diaper 10) has front waist area (front waist area 20), rear waist area (rear waist area 30) and the lower crotch region between described front waist area and described rear waist area (lower crotch region 25), this disposable diaper has from described front waist area towards the length direction (length direction L) of described rear waist area and the width orthogonal with described length direction (width W), this disposable diaper has: a pair magic tape (magic tape 90), it extends along described width and can paste and be fixed on described front waist area in waist area in the rear, absorbent core (absorbent core 40a), it is crossed over described lower crotch region and extends towards at least one in described front waist area and described rear waist area, and waistline pars contractilis (waistline pars contractilis 85), it to be configured between described a pair magic tape and can to stretch on described width, its purport is, described waistline pars contractilis from the center of the width of described disposable diaper towards two of width outside extend, described waistline pars contractilis has: the 1st region (the 1st region 851), and it extends towards the inner side of width from two lateral borders of described waistline pars contractilis, 2nd region (the 2nd region 852), its medial border from described 1st region extends towards the inner side of width, and has the percentage elongation lower than the percentage elongation in described 1st region, and the 3rd region (the 3rd region 853), its medial border from described 2nd region extends towards the inner side of width, and there is the percentage elongation higher than the percentage elongation in described 2nd region, the outside being positioned at the width of described absorbent core at least partially in described 1st region.
the effect of invention
According to the disclosure, a kind of disposable diaper that can improve the belt of the stickiness of waistline can be provided.
Accompanying drawing explanation
Fig. 1 is the expansion top view of the disposable diaper of present embodiment.
Fig. 2 is the sectional view along the F1-F1 line shown in Fig. 1 of disposable diaper.
Fig. 3 is the sectional view along the F2-F2 line shown in Fig. 1 of disposable diaper.
Fig. 4 is the figure that the disposable diaper schematically showing present embodiment is worn on the wearing state of wearer.Magic tape is pasted to be fixed on front waist area and wearer's state of lying down by (a) of Fig. 4, and magic tape is pasted to be fixed on front waist area and the state that sits up of wearer by (b) of Fig. 4.
Detailed description of the invention
Then, be described with reference to the embodiment of accompanying drawing to disposable diaper 10 of the present invention.In addition, in following accompanying drawing is recorded, identical or similar Reference numeral has been marked to identical or similar part.But should notice that accompanying drawing is schematic, the ratio of each size etc. are different from the ratio of reality.
Thus, concrete size etc. should be judged with reference to the following description.In addition, the relation of size each other, part that ratio is different can also be comprised each other at accompanying drawing.
(1) the overall schematic configuration of disposable diaper
Fig. 1 is the expansion top view of the disposable diaper 10 of present embodiment.Fig. 2 is the sectional view along the F1-F1 line shown in Fig. 1 of disposable diaper.Fig. 3 is the sectional view along the F2-F2 line shown in Fig. 1 of disposable diaper.Expanded view shown in Fig. 1 is the figure that the positive dough sheet 50, flank 70 etc. making the elastic component of leg pars contractilis 75 and leg side pars contractilis 80 be stretched to formation disposable diaper does not form the state of the state of fold.
Disposable diaper 10 has front waist area 20, lower crotch region 25 and rear waist area 30.Front waist area 20 is the parts contacted with the frontal cowl of wearer (abdominal part).In addition, rear waist area 30 is the parts contacted with the rear waist portion (back) of wearer.Lower crotch region 25 is between front waist area 20 and rear waist area 30.
In addition, in disposable diaper 10, a pair leg opening part 35 is formed with.Leg opening part 35 is located at the side end in the product width direction of disposable diaper, and is the part of enclosing configuration under the state being dressed in wearer at disposable diaper along the lower limb of wearer.
In addition, in the present embodiment, the past waist area 20 is called length direction L towards the direction of rear waist area 30, the direction with length direction L-orthogonal is called width W.
Disposable diaper 10 has absorber 40.Absorber 40 has absorbent core 40a and core covering 40b.Absorbent core 40a crosses over lower crotch region 25 and extends towards at least one in front waist area 20 and waist area 30 from lower crotch region 25.
Absorbent core 40a is identical with the absorbent core used in disposable diaper in the past, can use and pulverize the known component such as slurry, high absorption polymer, material and suitably form absorbent core 40a.Absorbent core 40a is coated by the core covering 40b of lamellar.Core covering 40b is the sheet material of coated absorbent core 40a.The end edge of absorbent core and the end edge of core covering roughly align.In more detail, the distance between the end edge of absorbent core and the end edge of core covering is below 5mm.
The low weight per unit area region 110 of weight per unit area lower than the weight per unit area of the absorbing material at other positions of absorbent core 40a of absorbing material is formed at absorbent core 40a.Low weight per unit area region 110 is positioned at the central authorities of the width of the end edge of absorbent core 40a.Width on the width W in low weight per unit area region 110 goes along with the end edge towards absorbent core 40a and broadens.More particularly, low weight per unit area region 110 is wedge-like when overlooking disposable diaper 10.
The positive dough sheet 50 of liquid permeability is possessed in the face side (skin opposite face side) of absorber 40.In addition, liquid-impermeable back sheet 60a is possessed in the rear side (non-skin opposite face side) of absorber 40.The rear side of sheet 60a possesses covering sheet material 60 overleaf.
Flank 70 is possessed respectively at the lateral border (outboard end on width) of absorber 40.Flank 70 crosses over front waist area 20, lower crotch region 25 and rear waist area 30, and is configured at than the position of absorber 40 by the outside of width.Flank 70 is made up of 1 non-woven fabrics or multiple non-woven fabrics be piled up of more than two are formed.Flank 70 is positioned at than the position of absorbent core by skin opposite face side, and extends towards than the position of absorbent core by the outside of width.
Possess a pair leg pars contractilis 75 that can stretch in the length directionl at flank 70, this pair leg pars contractilis 75 is configured at than the position of leg opening part 35 by the inner side of width.As long as leg pars contractilis 75 is configured to make leg opening part 35 flexible in the longitudinal direction, both can configure along leg opening part 35, also can be the state configuration of having tilted for leg opening part 35 with the Local Phase of leg pars contractilis 75.
In addition, a pair leg side pars contractilis 80 that alongst L extends is possessed in the inner side of the width of a pair leg pars contractilis 75.Leg side pars contractilis 80 is for being arranged at the flexible rivel of the erecting of the medial end of the width of flank 70.
In addition, disposable diaper 10 possesses crotch pars contractilis 200, and this crotch pars contractilis 200 is configured at the region overlapping with the absorber of lower crotch region 25.Crotch pars contractilis 200 is configured to, and compared with other parts of absorber 40, the local of lower crotch region 25 can be made when wearing disposable diaper to maintain smooth shape.Crotch pars contractilis 200 is configured at least to stretch on length direction L or width W.
The 1st breach 115 and the 2nd breach 125 is formed at the absorbent core 40a of lower crotch region.1st breach 115 and the 2nd breach 125 are for being formed at the slit of absorber 40.Slit is the part that there is not absorbing material.The notch geometry that 1st breach 115 and the 2nd breach 125 lateral border respectively in self-absorption core 40a extends towards the inner side of width.
Magic tape 90 is a pair, extends along width W in rear waist area 30, by pasting the non-skin opposite face being fixed on front waist area 20, disposable diaper 10 is held in the health of wearer.Magic tape 90 is installed on the region corresponding to rear waist area 30 of flank 70.Magic tape 90 possesses: substrate sheets 91, and itself and flank 70 are connected; And hook tabs 92, it is provided with multiple clamping hooked as fastened component (not shown), and is fixed on substrate sheets 91.Hook tabs 92 is for being provided with the region of fastened component.
Target portion 95 is located at the face of the non-skin opposite side of the covering sheet material 60 of front waist area.Target portion 95 is configured to hang for the clamping hooked card of magic tape, and plays a role as the ring of locking system of hook and ring composition.As target portion, such as, hot-wind nonwoven cloth can be used.In addition, disposable diaper also can be configured to not have target portion and magic tape 90 pastes the covering sheet material 60 being fixed on front waist area.
In addition, between a pair magic tape 90 in the direction of the width, be provided with the waistline pars contractilis 85 that can stretch in the direction of the width.Waistline pars contractilis 85 can shrink in the direction of the width between magic tape 90.
In the present embodiment, waistline pars contractilis 85 is made up of Stretchable sheet.In addition, the concept of waistline pars contractilis 85 is the parts can stretched in the direction of the width in fact, and is the part except be configured with the part of Stretchable sheet under the state not playing contractility except.Thus, the lateral border of waistline pars contractilis described later is not the lateral border of flexible sheet material, but the lateral border of flexible part.
In the present embodiment, as waistline pars contractilis 85, applying unit area weight is 20g/m 2~ 45g/m 2retractility film.But waistline pars contractilis 85 also can by other the Structure composing such as how root rubber line.Waistline pars contractilis 85, after the predetermined multiplying power being stretched to the length under non-elongate state (naturalness), utilizes hot-melt adhesive or heat treated etc. to be adhered to covering sheet material 60.
Waistline pars contractilis 85 from the center of the width of disposable diaper towards two of width outside extend, be made up of the continuous print sheet material extended in the direction of the width.The end edge of waistline pars contractilis 85 is positioned at the position of side more forward than the end edge of disposable diaper.In addition, the end edge of waistline pars contractilis 85 also can align with the end edge of disposable diaper.In addition, the front-end edge of waistline pars contractilis 85 is positioned at the position of side more forward than the end edge of absorbent core 40a, and is positioned at the position of side more forward than the end edge of core covering 40b, and is positioned at the position of the end edge side rearward than leg pars contractilis 75.Thus, when overlooking disposable diaper, waistline pars contractilis 85 overlapping with absorbent core 40a at least partially.In addition, waistline pars contractilis 85 crosses over the end edge of absorbent core and the end edge of core covering, and the position towards the side rearward of the end edge than the end edge of absorbent core and core covering extends.
The lateral border 85WO of waistline pars contractilis 85 is positioned at medial border (medial extremity of width) than magic tape by the position of the inner side of width.Waistline pars contractilis 85 and magic tape 90 separate in the direction of the width.
Waistline pars contractilis has: the 1st region 851, and it extends towards the inner side of width from two lateral border 85WO of waistline pars contractilis; 2nd region 852, its medial border 851WI from the 1st region 851 extends towards the inner side of width; And the 3rd region 853, its medial border 852WI from the 2nd region 852 extends towards the inner side of width.
1st region 851, the 2nd region 852 and the 3rd region 853 are connected in the direction of the width.Thus, between the 1st region 851 and the 2nd region 852, be not provided with non-telescoping region not flexible in the direction of the width between the 2nd region 852 and the 3rd region 853.In addition, the medial border 851WI in the 1st region 851 aligns with the lateral border 852WO in the 2nd region 852, and the medial border 852WI in the 2nd region 852 aligns with the lateral border 853WO in the 3rd region 853.
The percentage elongation that 1st region 851, the 2nd region 852 and the 3rd region 853 are configured in the direction of the width is different.In detail, the percentage elongation of the width in the 2nd region 852 is lower than the percentage elongation of the width in the 1st region 851.In addition, the percentage elongation of the width in the 3rd region 853 is higher than the percentage elongation of the width in the 1st region 851.In addition, the relation between the percentage elongation of the percentage elongation of the width in the 1st region 851 and the width in the 3rd region 853 both can be identical, also can be that wherein any one is higher.Preferably, the percentage elongation of the width in the 3rd region 853 is preferably higher than the percentage elongation of the width in the 1st region 851.
The lateral border 851WO in the 1st region 851 is positioned at the position leaning on the outside of width than the lateral border of absorbent core 40a.The medial border 851WI in the 1st region 851 is positioned at the position leaning on the inner side of width than the lateral border of absorbent core.Thus, the lateral border ground configuration of absorbent core is crossed in the 1st region.In addition, as long as the outside being positioned at the width of absorbent core at least partially in the 1st region, can be that the medial border in the 1st region is positioned at lateral border than absorbent core by the position in the outside of width, also can be that the medial border in the 1st region aligns with the lateral border of absorbent core.
2nd region 852 is between the 1st region 851 and the 3rd region 853.Preferably, the 2nd region 852 is configured at the position leaning on the inner side of width than the lateral border of absorbent core 40a.The Central places configuration of the width of disposable diaper is crossed in 3rd region 853.Preferably, overlapping at least partially when overlooking with low weight per unit area region of the 3rd region 853.
In addition, the waistline pars contractilis 85 of present embodiment can be width center with respect to disposable diaper and the centrage extended along its length is symmetrical, also can be asymmetric.Such as, the lateral border of absorbent core 40a is all crossed in both the 1st regions 851 about can being, also can be the lateral border that absorbent core 40a is crossed in the 1st region 851.In addition, both can be that both the 2nd regions 852 of left and right are configured at the position leaning on the inner side of width than the lateral border of absorbent core 40a, also can be that the 2nd region 852 is configured at the position leaning on the inner side of width than the lateral border of absorbent core 40a.In addition, the disposable diaper of present embodiment also can lean on the position in the outside of width to arrange the region with the percentage elongation lower than the percentage elongation in the 1st region 851 than the 1st region 851.
Waistline pars contractilis 85 is positioned at than the position of absorbent core 40a by non-skin opposite face side.In the present embodiment, waistline pars contractilis 85 is configured between covering sheet material 60 and back sheet 60a.But when being configured to the position of core covering 40b towards the outside leaning on length direction than absorbent core 40a and extending, waistline pars contractilis 85 also can be configured between core covering 40b and back sheet 60a or between core covering 40b and covering sheet material 60.The position of waistline pars contractilis is not particularly limited.In addition, in the region not being configured with absorber, also can be configured between flank 70 and back sheet 60a or between flank 70 and covering sheet material 60.
In addition, the waistline pars contractilis of present embodiment is configured to stretch in the direction of the width, but also can be configured to waistline pars contractilis and can stretch on width and length direction.
In addition, engage by bonding agent between waistline pars contractilis and absorbent core.Configure the row of the bonding agent that waistline pars contractilis 85 and absorbent core 40a engage by multiple continuous print in the longitudinal direction, and each row configure in the direction of the width overlappingly.Specifically, following structure can be exemplified: the configuration multiple row row of the bonding agent that continuous print is spiral-shaped and the overlapping in the direction of the width structure of these row in the longitudinal direction; Or configure multiple fluctuating in the direction of the width and the row of the bonding agent of continuous print waveform and the overlapping in the direction of the width structure of these row in the longitudinal direction.
In addition, in the present embodiment, waistline pars contractilis 85 and absorbent core 40a are not direct joint, but indirectly engage across back sheet 60a and core covering 40b.Preferably, the bonding agent that waistline pars contractilis 85 and back sheet 60a are bonded together, the bonding agent that back sheet 60a and core covering 40b is bonded together and the multiple row of continuous print in the longitudinal direction of the bonding agent configuration that core covering 40b and absorbent core 40a is bonded together, and each row overlap in the direction of the width.
" percentage elongation " in this description refers to the degree of elongation, implements to measure by following measuring method.
When disposable diaper 10 is enclosed packaging etc., take out disposable diaper 10 from packaging.Then, shear out the configuring area of the Stretchable sheet of formation waistline pars contractilis, thus prepare the sample of measuring object.By this sample 20 DEG C ± 2 DEG C, place 24 hours, using the naturalness of this state as Stretchable sheet under the environment of relative humidity 60% ± 5%RH.In its natural state, between the end (anterior end) of the absorbent core side of Stretchable sheet and the end (rear end) of the side, waist opening portion of Stretchable sheet, namely in the centre position of length direction, point (marking) is marked off and on along width.This is using the center of the width of Stretchable sheet as benchmark, from this benchmark to about width until the end, Sample Width direction of Stretchable sheet is with 5mm interval mark point (marking).Measure the distance between adjacent point.This distance is set to the length of naturalness.(due to the 5mm interval mark marking, being therefore 5mm).Then, measure from naturalness extend to cannot on Stretchable sheet by visual confirm the state of fold caused by elastic component till time, distance between the marking that just now marks.Percentage elongation (doubly)=(distance between the marking under elongation state)/(distance between the marking under naturalness) at each position, calculates percentage elongation by this formula.
(2) manufacture method of disposable diaper
Then, an example of the manufacture method of the absorbent commodity of present embodiment is described.In addition, for the method do not illustrated in the present embodiment, existing method can be adopted.In addition, the manufacture method below illustrated is an example, also can be manufactured by other manufacture method.The manufacture method of absorbent commodity at least comprises constituent part formation process, constituent part loads operation, lower limb encloses formation process and cut off operation.
In constituent part formation process, form the constituent part forming absorbent commodity.Specifically, such as, magic tape 90 or stacked absorbing material and molding absorber 40 is formed.
In constituent part mounting operation, above load at the net (Japanese: ウ エ Block) forming back sheet the constituent part that other nets, leakproof sheet material, absorber, the leg pars contractilis 75 such as the Stretchable sheet forming waistline pars contractilis 85, the net forming positive dough sheet etc. form disposable diaper 10.
In addition, as the method making the percentage elongation of waistline pars contractilis 85 change, such as, following method can be enumerated.Before waistline pars contractilis 85 being fitted in back sheet 60a etc., utilize gear that waistline pars contractilis 85 is extended in the direction of the width.When utilizing this gear to extend, the gear in the region of reduction percentage elongation (such as the 2nd region) being extended and dies down.The gear in the region (such as the 1st region and the 3rd region) of increase percentage elongation is made to extend grow.The number of times that the power that gear extends can be extended by the pitch of the degree of depth of protuberance of change gear, the protuberance of gear, gear adjusts.Become higher by the percentage elongation in the comparatively strong region extended, become lower by the percentage elongation in the region of more weak extension.
Enclose in formation process at lower limb, cut off positive dough sheet 50, covering sheet material 60 and back sheet 60a.Thus, the leg opening part 35 that the lower limb that is configured at wearer encloses is formed.
In cut-out operation, the continuum being configured with positive dough sheet 50, back sheet 60a, absorber 40 etc. is cut into the size of a product along width W.Thus, disposable diaper 10 is manufactured.
(3) action effect
Fig. 4 schematically represents that disposable diaper is worn on the wearing state of wearer.Magic tape is pasted to be fixed on front waist area and wearer's state of lying down by (a) of Fig. 4, and magic tape is pasted to be fixed on front waist area and the state that sits up of wearer by (b) of Fig. 4.
When dressing the disposable diaper of belt (when pasting fixing magic tape), the back of wearer is loaded on the rear waist area of disposable diaper, the magic tape 90 of rear waist area 30 is pulled to front waist area 20, thus front waist area 20 is fixed in the stickup of this magic tape 90.
As shown in (a) of Fig. 4, when pasting fixing magic tape, the body pressure of wearer puts on the rear waist area 30 of disposable diaper.Usually, when dressing disposable diaper, the health of wearer is loaded in the mode of the whole width covering absorbent core 40a.Thus, when tractive magic tape 90, be positioned at the part leaning on the position in the outside of width than the health of wearer, be namely pulled by the region in the outside of width than absorbent core 40a.Such as, when the part of tractive magic tape 90 is difficult to extend, dresses auxiliary and sometimes cannot hold that to make magic tape 90 extend which kind of degree be just in time, thus cannot paste and be fixed on correct position.But, owing to leaning on than absorbent core 40a the position in the outside of width to be configured with the 1st higher region 851 of percentage elongation, therefore dressing auxiliary and pasting fixing magic tape 90 by being extended in the 1st region 851.Be easy to the 1st region 851 to extend owing to dressing auxiliary, therefore dress auxiliary and easily can hold the scope can extended in the 1st region 851.Thus, dress auxiliary and can hold the scope of being extended by magic tape 90, thus magic tape stickup can be fixed on correct position.
In addition, when pasting fixing magic tape 90, the 1st region 851 is configured at the position corresponding with the pelvic bone of the oxter of wearer.On the other hand, when pasting fixing magic tape 90, the 2nd region 852 and the 3rd region 853 are in the body pressure that is applied with wearer and are difficult to the state of stretching.Such as, but after disposable diaper is worn on wearer, under the state that wearer sits up, the body pressure drop putting on the rear waist area 30 of disposable diaper is low.When the body pressure drop of the wearer putting on rear waist area 30 is low, as shown in (b) of Fig. 4, linking in 1st region 851, the 2nd region 852 and the 3rd region 853, and stretches using the 1st region 851 as basic point respectively in the 2nd region 852 and the 3rd region 853.
Specifically, compare with the 3rd region 853 with the 2nd region 852, the 1st region 851 is stretched when magic tape is dressed.In this condition, when the 2nd region 852 and the 3rd region 853 are flexible respectively, lower the 2nd region 852 of percentage elongation using the 1st region 851 as basic point by while the 1st side, region 851 tractive, higher the 3rd region 853 of percentage elongation is by the inner side tractive of the 2nd region 852 to width, thus the 2nd region 852 is extended.Now, because the 1st region 851 is positioned at the position near magic tape, therefore when magic tape 90 stickup being fixed on target portion 95, the 1st region 851 is extended.Now, owing to leaning on the position of the inner side of width to have the 3rd region 853 being more difficult to elongation than the 2nd region 852, therefore the 2nd region 852 be between the 1st region 851 and the 3rd region 853 is easily extended in the direction of the width equably, as a result, the 2nd more weak power in region 852 can fit in health equably while the health of the baby that do not tie tight.
By making disposable diaper so fit, at the pelvic bone of the oxter of wearer, the 1st region 851 is utilized to fit strongly.In addition, for the position of the pelvic bone backrest side of the oxter than wearer, pelvic bone is less, and the health of wearer is soft.In the part that this pelvic bone is less, the 2nd region 852 is utilized weaker to fit.Health due to wearer fits in harder position strongly, the health of wearer weaker fits in soft position, therefore, it is possible to naturally fit in the health of wearer, improves the stickiness of waistline.That is, the situation of following antinomy has each other been reached by structure of the present invention: while " not wanting to allow baby be tied tight by diaper " desired by original mother (paraprofessional personnel), in order to not form gap between health, do not make Excreta reveal thus preferably improve stickiness (tying tight further).
The Central places configuration of the width of disposable diaper 10 is crossed in 3rd region 853.The center configuration of the back of wearer has spinal column, than the position ventralward depression of left and right.The recess that this depressed area (Michaelis rhombus) is sacral portions, is configured with the 3rd region 853 in this depressed area.In (a) of Fig. 4, depressed area CR is shown.After wearing disposable diaper, when body pressure reduces, the 3rd region 853 tractive the 2nd region 852 is while shrink.Can by this contracted partial configuration in the position of the depression of wearer.Thereby, it is possible to suppress to produce gap between the center and disposable diaper of the back of wearer, and disposable diaper 10 is fitted waistline entirety.In addition, the front and back due to the end edge at absorbent core 40a produce the thickness difference of absorbent core 40a, therefore ought to be easy to generate gap between health and disposable diaper.But the end edge of waistline pars contractilis 85 exceedes the end edge of absorbent core 40a and extends to waist side, and the percentage elongation in the 3rd region 853 is higher, therefore, it is possible to prevent the leakage of the depressed area from dorsal part more reliably.
Absorbent core 40a is compared with forming other the component (positive dough sheet 50) of disposable diaper, and rigidity is higher, is therefore difficult to configure along health.But, waistline pars contractilis 85 overlapping with absorbent core 40a at least partially, and be configured with waistline pars contractilis 85 in the non-skin opposite face side of absorbent core 40a, therefore, it is possible to utilize the contraction of waistline pars contractilis 85 to make absorbent core 40a fit in health.
When having the 3rd region 853 in the whole area configurations of the width of absorbent core 40a, the width of absorbent core 40a becomes too short due to the contraction in the 3rd region 853 in its natural state sometimes.As a result, the width of disposable diaper cannot be guaranteed when pasting fixing magic tape, dressing auxiliary and being difficult to catch magic tape 90, likely making wearing be deteriorated.But, by making the 2nd region 852 be positioned at the position leaning on the inner side of width than the lateral border of absorbent core 40a, thus in the whole region of the width of absorbent core 40a, be configured with the 2nd region 852 and the 3rd region 853.Thus, absorbent core 40a width does not in its natural state become too short, thus wearing property can be suppressed to be deteriorated.
The medial border in the 1st region 851 is positioned at the position leaning on the inner side of width than the lateral border of absorbent core 40a.When tractive magic tape is dressed, dress auxiliary and fixing magic tape is pasted in the 1st region elongation.In addition, when fixing magic tape is pasted in the 1st region elongation, absorbent core is configured at the below of the health of wearer, and is applied with body pressure.Medial border due to the 1st region is configured at the position leaning on the inner side of width than the lateral border of absorbent core, and therefore when tractive magic tape is dressed, the medial border of absorbent core is the state being difficult to movement in the below of the health of wearer.Thus, if the medial border in the 1st region 851 is positioned at the position leaning on the inner side of width than the lateral border of absorbent core 40a, then, when tractive magic tape, the medial border in the 1st region 851 becomes basic point and is easy to stretching the 1st region 81.
Can be the row of the bonding agent that waistline pars contractilis 85 and absorbent core 40a are bonded together by the multiple continuous print in the longitudinal direction of configuration, and each row configure in the direction of the width overlappingly.Can be bonded together between waistline pars contractilis and absorbent core continuously on length direction and width, can prevent waistline pars contractilis self-absorption core from floating.
The percentage elongation of the width in the 3rd region 853 also can be configured higher than the percentage elongation of the width in the 1st region 851.By making the percentage elongation in the 3rd region 853 higher than the percentage elongation in the 1st region 851, magic tape is pasted fixing after, under the state that the body pressure of waist area reduces after putting on, the 2nd region 852 is by the 3rd side, region 853 tractive.Thus, the part of shrinking under the effect in the 3rd region can concentrate on the recess of the back of wearer.
Overlapping at least partially when overlooking with low weight per unit area region of 3rd region 853.Utilize the 3rd region that low weight per unit area region is shunk in the direction of the width, the end edge of absorbent core produces distortion towards width central side.The rear portion of absorbent core can be formed cup-shape.The absorbent core of this cup-shape can be utilized to cover the buttocks of wearer, thus the stickiness of waistline can be improved further.
The end edge of absorbent core 40a and the end edge of core covering 40b roughly align, and waistline pars contractilis 85 extends towards the position of the side rearward of the end edge than the end edge of absorbent core 40a and core covering 40b.Such as, when core covering 40b is towards when extending than absorbent core 40a position rearward, the retractility being hindered waistline pars contractilis 85 by core covering 40b is likely caused.But, because waistline pars contractilis 85 extends towards than the end edge of absorbent core 40a and the end edge position rearward of core covering 40b, therefore than the end edge of absorbent core and the end edge position rearward of core covering, core covering etc. can not hinder the flexible of waistline pars contractilis 85.
In addition, be not configured with waistline pars contractilis 85 at the end edge of disposable diaper, and be formed with the breach caved in the inner side of width and the inner side of length direction at the flank of the end edge of disposable diaper.In more detail, the end edge of flank caves in the certain limit extended inside width from the lateral border of flank inside length direction.In other words, the lateral border of flank caves in the certain limit extended inside length direction from the end edge of flank inside width.So, by forming the end edge of disposable diaper, the clot youngster at the end edge place of disposable diaper can be suppressed, the waistline of wearer can be covered more reliably.
As mentioned above, disclose content of the present invention by embodiments of the present invention, but form the discussion of a part of the disclosure and accompanying drawing and should not be construed as limiting the present invention.According to the disclosure, those skilled in the art can specify various replacement embodiment, embodiment and application technology.Thus, the invention specified features of protection scope of the present invention according to the above description only involved by rational claims and determining.
In addition, the full content of No. 2014-214860th, Japan's patent application (application on October 21st, 2014) is by referring to being incorporated into present specification.
utilizability in industry
A kind of disposable diaper that can improve the belt of the stickiness of waistline can be provided.
description of reference numerals
10, disposable diaper; 20, front waist area; 25, lower crotch region; 30, rear waist area; 35, leg-openings portion; 40, absorber; 40a, absorbent core; 40b, core covering; 50, positive dough sheet; 60, covering sheet material; 60a, back sheet; 70, flank; 75, leg pars contractilis; 80, leg side pars contractilis; 85, waistline pars contractilis; 851, the 1st region; 852, the 2nd region; 853, the 3rd region; 90, magic tape; 110, low weight per unit area region; 115, the 1st breach; 125, the 2nd breach; 200, crotch pars contractilis; L, length direction; W, width.

Claims (10)

1. a disposable diaper, it has front waist area, rear waist area and the lower crotch region between described front waist area and described rear waist area,
This disposable diaper has from described front waist area towards the length direction of described rear waist area and the width orthogonal with described length direction,
This disposable diaper has: a pair magic tape, and it extends along described width and can paste and be fixed on described front waist area in waist area in the rear;
Absorbent core, it is crossed over described lower crotch region and extends towards at least one in described front waist area and described rear waist area; And
Waistline pars contractilis, it to be configured between described a pair magic tape and can to stretch on described width, wherein,
Described waistline pars contractilis from the center of the width of described disposable diaper towards two of width outside extend,
Described waistline pars contractilis has: the 1st region, and it extends towards the inner side of width from two lateral borders of described waistline pars contractilis; 2nd region, its medial border from described 1st region extends towards the inner side of width, and has the percentage elongation lower than the percentage elongation in described 1st region; And the 3rd region, its medial border from described 2nd region extends towards the inner side of width, and has the percentage elongation higher than the percentage elongation in described 2nd region,
The outside being positioned at the width of described absorbent core at least partially in described 1st region.
2. require the disposable diaper described in 1 according to claim, wherein,
The Central places configuration of the width of described disposable diaper is crossed in described 3rd region.
3. require the disposable diaper described in 1 or 2 according to claim, wherein,
When overlooking described disposable diaper, described waistline pars contractilis overlapping with described absorbent core at least partially,
Described waistline pars contractilis is positioned at than the position of described absorbent core by non-skin opposite face side.
4. the disposable diaper according to any one of claims 1 to 3, wherein,
Described 2nd region is positioned at the position leaning on the inner side of width than the lateral border of described absorbent core.
5. the disposable diaper according to any one of Claims 1 to 4, wherein,
The medial border in described 1st region is positioned at the position leaning on the inner side of width than the lateral border of described absorbent core.
6. the disposable diaper according to any one of Claims 1 to 5, wherein,
Described waistline pars contractilis and described absorbent core engage by bonding agent,
Be configured with the row of multiple bonding agent described in continuous print on described length direction, and each row configure in the direction of the width overlappingly.
7. disposable diaper according to claim 2, wherein,
The percentage elongation of the described width in described 3rd region is higher than the percentage elongation of the described width in described 1st region.
8. the disposable diaper according to any one of claim 1 ~ 7, wherein,
Low weight per unit area region is formed in the central authorities of the described width of the end edge of described absorbent core, the weight per unit area of the absorbing material in this low weight per unit area region is lower than the weight per unit area of the absorbing material at other positions of described absorbent core
Overlapping at least partially when overlooking with described low weight per unit area region of described 3rd region.
9. the disposable diaper according to any one of claim 1 ~ 8, wherein,
This disposable diaper comprises the core covering for covering described absorbent core,
The end edge of described absorbent core and the end edge of described core covering roughly align,
Described waistline pars contractilis extends towards the position of the side rearward of the end edge than the end edge of described absorbent core and described core covering.
10. the disposable diaper according to any one of claim 1 ~ 9, wherein,
This disposable diaper has and is positioned at than described absorbent core by the position of skin opposite face side and towards the flank extended by the outside of described width than described absorbent core,
The end edge of described flank caves in the inner side of described length direction in the certain limit extended to the inner side of described width from the lateral border of described flank.
CN201480002488.XA 2014-10-21 2014-10-22 Disposable diaper Active CN104736117B (en)

Applications Claiming Priority (3)

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JP2014-214860 2014-10-21
JP2014214860A JP5697790B1 (en) 2014-10-21 2014-10-21 Disposable diapers
PCT/JP2014/078041 WO2016063366A1 (en) 2014-10-21 2014-10-22 Disposable nappy

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CN108601692A (en) * 2016-02-01 2018-09-28 尤妮佳股份有限公司 Absorbent commodity
CN108601688A (en) * 2016-02-01 2018-09-28 尤妮佳股份有限公司 Disposable diaper
CN110035725A (en) * 2016-11-30 2019-07-19 尤妮佳股份有限公司 Absorbent commodity

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CN102846435A (en) * 2011-07-01 2013-01-02 Sca卫生用品公司 Absorptive object
CN103619297A (en) * 2011-06-29 2014-03-05 宝洁公司 Waistband for an absorbent article
JP2014104148A (en) * 2012-11-27 2014-06-09 Uni Charm Corp Disposable diaper

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Publication number Priority date Publication date Assignee Title
CN1642504A (en) * 2002-03-20 2005-07-20 株式会社瑞光 Disposable wearing article
JP2005296557A (en) * 2004-04-08 2005-10-27 Kyoko Kaneoka Paper diaper with both detachable wings extended and paper diaper cover
CN103619297A (en) * 2011-06-29 2014-03-05 宝洁公司 Waistband for an absorbent article
CN102846435A (en) * 2011-07-01 2013-01-02 Sca卫生用品公司 Absorptive object
JP2014104148A (en) * 2012-11-27 2014-06-09 Uni Charm Corp Disposable diaper

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Publication number Priority date Publication date Assignee Title
CN108601692A (en) * 2016-02-01 2018-09-28 尤妮佳股份有限公司 Absorbent commodity
CN108601688A (en) * 2016-02-01 2018-09-28 尤妮佳股份有限公司 Disposable diaper
CN108601688B (en) * 2016-02-01 2019-08-27 尤妮佳股份有限公司 Disposable diaper
CN110035725A (en) * 2016-11-30 2019-07-19 尤妮佳股份有限公司 Absorbent commodity

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