CN105407847A - Disposable diaper - Google Patents
Disposable diaper Download PDFInfo
- Publication number
- CN105407847A CN105407847A CN201480042291.9A CN201480042291A CN105407847A CN 105407847 A CN105407847 A CN 105407847A CN 201480042291 A CN201480042291 A CN 201480042291A CN 105407847 A CN105407847 A CN 105407847A
- Authority
- CN
- China
- Prior art keywords
- disposable diaper
- sheet
- waist
- stretchable sheet
- absorbent core
- 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
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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
Abstract
The present invention provides a disposable diaper (10) comprising: an absorbent body (40) having an absorbent core; a pair of fastening tapes (90); a waist expansion/contraction sheet having expansion/contraction properties in the product width direction; and a waist holding section that holds the disposable diaper on to the body of a wearer. The waist expansion/contraction sheet has: a rear-side waist expansion/contraction sheet (85) arranged in the rear waist area; and a front-side waist expansion/contraction sheet (86) arranged in the front-side end section in the front waist area. Some of the rear-side waist expansion/contraction sheet is arranged overlapping the rear-side end section of the absorbent core and is arranged overlapping the waist holding section. The front-side waist expansion/contraction sheet is arranged adjacent to the front-side end section of the absorbent core.
Description
Technical field
The present invention relates to a kind of disposable diaper.
Background technology
In the past, be known to a kind of disposable diaper, this disposable diaper has front waist area, rear waist area and lower crotch region, and comprise and cross over lower crotch region and the absorber that extends of waist area and rear waist area and for the magic tape (for example, referring to patent documentation 1) by front waist area and the set of rear waist area forward.
Usually, magic tape extends out outside width from the width outboard end of the rear waist area of disposable diaper.When dressing the disposable diaper of patent documentation 1, waist area before the magic tape of rear waist area being pulled under the state of the in-leg lower crotch of disposable diaper being configured in wearer waist area before this magic tape is bonded to.
In addition, the elastic component that can stretch in the width direction is configured with in the waist opening portion of the disposable diaper of patent documentation 1.By the flexible waistline making the waist opening portion of disposable diaper be sealed at wearer of elastic component.
prior art document
patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-20665 publication
But described disposable diaper has following problem points.
In the disposable diaper of patent documentation 1, the region that self-adhesion cingulum extends in the width direction and elastic component separate configuration.The region that self-adhesion cingulum extends in the width direction and the area configurations being configured with elastic component are be close to the health of wearer.But, part between the region that self-adhesion cingulum extends in the width direction and elastic component is not close to the health of wearer, but the region projection extended in the width direction relative to self-adhesion cingulum or and the region that extends in the width direction of self-adhesion cingulum between produce step.
In addition, the absorbent core of absorber is formed by absorbing materials such as comminution pulps, and the thickness being configured with the region of this absorbent core is thicker than the thickness in the region not configuring absorbent core.In addition, the thickness being configured with the region of elastic component is more thickening than perisystolic state by the contraction of elastic component.Therefore, the thickness of the part be positioned near waist opening portion of disposable diaper is thicker than the thickness of member of formation itself.
In the disposable diaper of patent documentation 1, separate between elastic component with absorbent core.The thickness in the region between elastic component and absorbent core is thinner than the thickness in the region being configured with elastic component and is thinner than the thickness in the region being configured with absorbent core.Therefore, produce between the same region being configured with elastic component, the region between elastic component and absorbent core between the same region being configured with absorbent core of step or the region between elastic component and absorbent core and produce step.
On the other hand, in recent years, the requirement of the user (buyer) of disposable diaper is in raising, when being particularly dressed in infant, wanting to reduce as far as possible and the such requirement for the burden caused skin of burden is caused to the skin of infant, look that the requirement close to the such outward appearance aspect of underwear improves.
But, in described such disposable diaper, owing to being formed with multiple step at disposable diaper, therefore, according to the difference of user, sometimes feel that step part likely causes stimulation to skin, or because step makes the functional obvious of disposable diaper to feeling discontented close to the outward appearance of underwear.
Summary of the invention
Therefore, the present invention makes in view of such situation, its object is to, and provides a kind of discontented disposable diaper that can suppress discontented, outward appearance aspect for the burden caused skin.
Will being intended to of disposable diaper of the present disclosure (disposable diaper 10), it comprises: front waist area (front waist area 20), rear waist area (rear waist area 30), lower crotch region (lower crotch region 25), it is between described front waist area and described rear waist area, product length direction (product length direction L), its from described front waist area towards described rear waist area, product width direction (product width direction W), it is orthogonal with described product length direction, absorber (absorber 40), it crosses over described lower crotch region, and extends at least one in described front waist area and described rear waist area, and this absorber has absorbent core, a pair magic tape (magic tape 90), it is configured at the outboard end on the product width direction of described rear waist area, is used for being bonded to described front waist area, waist stretchable sheet, it crosses over the center in the described product width direction of disposable diaper, and has retractility on described product width direction, and waistline maintaining part, it extends along product width direction in described front waist area and described rear waist area, for disposable diaper being held in the health of wearer, wherein, described waist stretchable sheet has the posterior lumbar stretchable sheet (posterior lumbar stretchable sheet 85) of the rear end being configured at described rear waist area and is configured at the front side waist portion stretchable sheet (front side waist portion stretchable sheet 86) of anterior end of described front waist area, a part for described posterior lumbar stretchable sheet configures in the mode overlapping with the rear end of described absorbent core and configures in the mode overlapping with described waistline maintaining part, described front side waist portion stretchable sheet configures in the mode adjacent with the anterior end of described absorbent core.
Accompanying drawing explanation
Fig. 1 is the expansion top view under the elongation state of the disposable diaper of present embodiment.
Fig. 2 is the top view under the naturalness of a part for the disposable diaper of present embodiment.
Fig. 3 is the sectional view of the disposable diaper along the F1-F1 line shown in Fig. 1.
Fig. 4 is the sectional view of the disposable diaper along the F2-F2 line shown in Fig. 1.
Detailed description of the invention
Next, the embodiment of disposable diaper 10 of the present invention is described with reference to accompanying drawing.In addition, in the record of accompanying drawing below, the Reference numeral identical or similar to identical or similar part mark.But should be noted that accompanying drawing is schematic, the ratio of each size etc. are different from the ratio of each size 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 may also be comprised each other at accompanying drawing.
(1) the overall schematic configuration of disposable diaper
Fig. 1 is the expansion top view under the elongation state of the disposable diaper 10 of present embodiment.Fig. 2 is the top view under the naturalness of a part (rear end side) for the disposable diaper of present embodiment.Fig. 3 is the sectional view of the disposable diaper along the F1-F1 line shown in Fig. 1.Fig. 4 is the sectional view of the disposable diaper along the F2-F2 line shown in Fig. 1.
Elongation state shown in Fig. 1 is the state that the positive dough sheet 50, flank 70 etc. making the elastic component 81 of leg pars contractilis 75 and leg side rivel 80 be elongated to formation disposable diaper does not form till the state of fold.On the other hand, naturalness is when during disposable diaper 10 is enclosed in packaging etc., takes out disposable diaper 10 from packaging, with this state 20 DEG C ± 2 DEG C, place 12 hours under the environment of relative humidity 60% ± 5%RH after state.In disposable diaper in its natural state, be formed with fold at the positive dough sheet 50, flank 70 etc. forming disposable diaper.
Disposable diaper 10 is the disposable diaper of banding pattern.The diaper of banding pattern refers to that the outboard end on the product width direction of outboard end on the product width direction of front waist area and rear waist area does not engage before use and utilizes the diaper that the set components such as magic tape engage in use.
Disposable diaper 10 has front waist area 20, lower crotch region 25 and rear waist area 30.Front waist area 20 is the part contacted with the frontal cowl of wearer (abdominal part part).In addition, rear waist area 30 is the part contacted with the rear waist portion (back portion) of wearer.Lower crotch region 25 is between front waist area 20 and rear waist area 30.
In addition, in the present embodiment, be called product length direction L by from front waist area 20 towards the direction of rear waist area 30, the direction with the L-orthogonal of product length direction be called product width direction W.
Disposable diaper 10 comprises absorber 40, and this absorber 40 crosses over lower crotch region 25, and from lower crotch region 25 towards at least any one extension in front waist area 20 and rear waist area 30.Absorber 40 comprises absorbent core 40a and core covering 40b.
Absorbent core 40a is identical with the absorbent core of disposable diaper in the past, can use the known component such as comminution pulp, superabsorbent polymer, material suitably forms.Absorbent core 40a is coated by the core covering 40b of lamellar.Outer load is configured at the surface by side, non-skin contact face of disposable diaper.Outer load is formed by such as non-woven fabrics.
Core covering 40b is the sheet covering absorbent core 40a.A part for the side, at least skin face of core covering 40b is formed by the various fabric nonwoven cloth or cotton paper sheets with liquid permeability.Grammes per square metre such as can be used to be about 10g/m
2~ 30g/m
2hot blast fabric nonwoven cloth, spun-bonded non-woven fabrics, SMS (spunbond-melt blown-spunbond) non-woven fabrics or grammes per square metre be about 10g/m
2~ 30g/m
2cotton paper sheets.
After being positioned at of absorber 40, the position of waist area is provided with the low rigidity portion 110 as Low rigidity region, the weight per unit area of this low rigidity portion 110 is lower than the weight per unit area at other positions of absorber, or this low rigidity portion 110 does not exist absorbent core 40a.Low rigidity portion 110 is shapes that the product width direction central authorities of the end of the side, waist area rearward of length self-priming acceptor 40 on product width direction go towards side, front waist area to shorten gradually.More specifically, when overlooking disposable diaper 10, low rigidity portion 110 is wedge shape.In addition, the boundary between absorbent core 40a and low rigidity portion 110 is formed by the circular arc protruded towards the center on the W of product width direction.The ratio low rigidity portion 110 of absorber 40 is the trapezoidal shape protruded towards the end of side, waist area rearward by the part outside product width direction.
In addition, the thickness of the end, product length direction of absorbent core is thinner than the thickness of the product length direction central authorities of absorbent core.It is further preferred that expect that the thickness of the part overlapping with posterior lumbar stretchable sheet of absorbent core is thinner than the thickness of the part not overlapping with posterior lumbar stretchable sheet in the end, product length direction of absorbent core of absorbent core.
The adjustment of thickness can by realizing for the embossing making the weight per unit area of absorbent core reduce.In addition, when detect thickness, the PEACOCK dial plate feeler (dialthicknessgauge) manufactured by the rugged making of Co., Ltd.'s tail can be used to measure.Measurement terminal is made to reach 6.0gf/cm with the round shape of diameter 10mm carrying out adjusting
2load after, measuring point is measured.When detect thickness, measure under the elongation state of disposable diaper.
The positive dough sheet 50 of liquid permeability is provided with in the face side (side, skin contact face) of absorber 40.In addition, the back sheet 60a of opaque liquid is provided with in the rear side (side, non-skin contact face) of absorber 40.The rear side (side, non-skin contact face) of sheet 60a is provided with outer load 60 overleaf.
Back sheet 60a is configured at anterior end 10F than disposable diaper by inside product length direction and than the rear end 10R of disposable diaper by the position inside product length direction.Back sheet 60a is configured at end, product width direction than disposable diaper by the position inside product width direction.
Side edge part on the product width direction W of absorber 40 is respectively equipped with flank 70.Flank 70 crosses over front waist area 20, lower crotch region 25 and rear waist area 30, and is configured at than absorber 40 by the position outside product width direction.Flank 70 is formed by multiple non-woven fabrics be laminated of more than one or two.
A pair leg opening part 35 is formed at the flank 70 of disposable diaper 10.Leg opening part 35 is located at the side end on the product width direction of disposable diaper respectively, for the lower limb along wearer under the state of being worn by wearer at disposable diaper encloses the part of configuration.Leg opening part 35 is towards the central concave on the product width direction of absorbent main body.
In addition, magic tape 90 is respectively equipped with at a pair flank 70.Magic tape 90 is configured at the outboard end on the product width direction of rear waist area, for being bonded to front waist area.Magic tape 90 extends to than flank 70 by the position outside product width direction.Magic tape 90 extends along product width direction W in rear waist area 30, by being bonded to the non-skin contact face of front waist area 20, thus disposable diaper 10 is held in the health of wearer.
Target portion 95 is configured to, and is configured at the non-skin contact face in front waist area and supplies a pair magic tape 90 set respectively.
As positive dough sheet and outer load, non-woven fabric plate product width direction alternately with high weight per unit area portion and low weight per unit area portion can be used in.By using so positive dough sheet, thus the boundary that concentrates between high weight per unit area portion and low weight per unit area portion and be easy to extensibility position is extended of exerting all one's strength, thus extend and can show.As variation, positive dough sheet and outer load also can use the non-woven fabric plate at least alternately on product width direction with high density portion and low-density portion.The high density portion alternately with the non-woven fabric plate in high density portion and low-density portion is formed by continuous print line or is formed by the state of the point of arrangement spaced apart.
The non-woven fabric plate forming this positive dough sheet or outer load by do not have the colored area occupation ratio of the sheet of the hot melt contact formed by an embossing, line pressure flower or some embossing, line pressure be 5% ~ 15% sheet formed.The area occupation ratio of embossing is the ratio of the area being formed with embossing.Such as, relative to the whole area of outer load, it is the area being formed with the part of embossing of outer load.
In the present embodiment, waistline maintaining part is formed by front waist area 20, rear waist area 30 and magic tape 90.The scope that the waistline holding part of rear waist area 30 extends in the region of the snap portions being certainly provided with magic tape 90 along product width direction.The scope that the waistline holding part of front waist area 20 extends in the region being certainly provided with target portion 95 along product width direction.
Be provided with a pair leg pars contractilis 75 at flank 70, this pair leg pars contractilis 75 is configured at than leg opening part 35 by than absorber 40 by the position outside product width direction, stretching along product length direction L inside product width direction.
As long as leg pars contractilis 75 is configured to make leg opening part 35 can stretch along product length direction, both can configure along leg opening part 35, the state configuration also can tilted relative to leg opening part 35 with a part.
In addition, be configured with a pair auxiliary telescopic portion 77 than leg pars contractilis 75 by the position outside product width direction, lower crotch region 25 and the configuration of ground, rear waist area 30 are crossed over by this pair auxiliary telescopic portion 77, and flexible along product length direction.Flank 70 can be made along the buttocks heaved that has of wearer by making the regions contract being provided with auxiliary telescopic portion 77 of flank 70, thus this region can be utilized to cover buttocks.
In addition, the part that leg pars contractilis 75 and auxiliary telescopic portion 77 shrink along product length direction in fact for utilizing the elastic components such as rubber band is the concept except the part except being configured with elastic component under the state not playing contractility.
Leg pars contractilis 75 by stretch along product length direction, the elastic component that to be provided with 3 in every side formed.Auxiliary telescopic portion 77 by stretch along product length direction, the elastic component that to be provided with 1 in every side formed.The elastic component of present embodiment comprises polyurethane elastomeric fiber, natural rubber.
The rear end 75R of leg pars contractilis 75 is configured at than the forward side of magic tape 90 and than magic tape by the position inside product width direction.Thus, leg pars contractilis 75 is utilized to make than the forward side of magic tape 90 and by the regions contract inside width.
The anterior end 77F in auxiliary telescopic portion 77 is configured at the position of the anterior end 75F side rearward than leg pars contractilis 75.Therefore, the anterior end 75F regions contract rearward that auxiliary telescopic portion 77 makes than leg pars contractilis 75 is utilized.The rear end 77R in auxiliary telescopic portion 77 is configured at the position of the rear end side rearward than leg pars contractilis.Thus, auxiliary telescopic portion 77 is utilized to make than leg pars contractilis 75 regions contract rearward.
Leg pars contractilis 75 can be utilized to mention the lower crotch region of disposable diaper towards the lower crotch of wearer.Further, can utilize auxiliary telescopic portion 77 that the power being mentioned lower crotch region by leg pars contractilis is passed to magic tape 90.Therefore, under the state by magic tape 90 set, not only be easy to utilize magic tape 90 to make the region of the waistline that will be held in wearer be sealed at wearer with the region being configured with leg pars contractilis 75, but also be easy to make the region between magic tape 90 and leg pars contractilis 75 be sealed at wearer.
Further, auxiliary telescopic portion can be utilized to make than leg pars contractilis by the regions contract outside product width direction, thus the part of the rear waist area of flank can be utilized suitably to cover buttocks.Therefore, it is possible to especially suppress rear side leg opening part to tilt when wearing.In addition, the contraction of leg pars contractilis can be utilized to be furthered to bodyside by leg opening part, thus the skew of leg opening part can be suppressed.
Leg pars contractilis 75 is configured between flank 70 and outer mounting 60.Or in the region being provided with the back sheet 60a be configured between absorber 40 and outer mounting 60, leg pars contractilis 75 is configured between back sheet 60a and flank 70.
The percentage elongation of leg pars contractilis 75 is preferably 1.7 times ~ 2.4 times.In the present embodiment, the percentage elongation of leg pars contractilis 75 is set as 1.9 times ~ 2.2 times.In addition, percentage elongation refers to the elongation degree of leg pars contractilis, specifies in the following way.
Percentage elongation=(length under the elongation state of leg pars contractilis) ÷ (length under the naturalness of leg pars contractilis) of leg pars contractilis
In addition, the percentage elongation in auxiliary telescopic portion 77 is preferably 1.6 times ~ 2.4 times.In addition, the percentage elongation in auxiliary telescopic portion 77 refers to and the elongation degree in auxiliary telescopic portion specifies in the following way.
Percentage elongation=(length under the elongation state in the auxiliary telescopic portion) ÷ (length under the naturalness in auxiliary telescopic portion) in auxiliary telescopic portion
In addition, in this manual, this percentage elongation is such as measured in such a way.
First, when disposable diaper 10 is enclosed in packaging etc., from packaging, disposable diaper 10 is taken out.Then, the configuring area of the measuring objects such as leg pars contractilis is cut out.Now, cut with also comprising the outer load that engages with measuring objects such as leg pars contractilis.Measure the percentage elongation of the sample cut out, thus measure the percentage elongation of measuring object.
By each sample 20 DEG C ± 2 DEG C, relative humidity places 60 minutes under being the environment of 60% ± 5%RH, and measures the length of measuring object along telescopic direction.This length is set to " length under the naturalness of measuring object (leg pars contractilis etc.) ".
Then, measure length in telescopic direction of desired region under this state (i.e. naturalness) and sample has been extended to from naturalness by range estimation cannot till non-telescoping sheet observes the state of the fold produced because of elastic component time the length of desired region in telescopic direction.This length is set to " length under the elongation state of measuring object (leg pars contractilis etc.) ".
By using these measurement results and utilizing described formula to calculate, thus measure percentage elongation.
In addition, following measuring method is utilized to measure " length " in this description.
Use the sample obtained in the following way, namely, when during disposable diaper 10 is enclosed in packaging etc., take out disposable diaper 10 from packaging, with this state 20 DEG C ± 2 DEG C, place 12 hours under the environment of relative humidity 60% ± 5%RH and the sample that obtains.
Then, by use affine mensuration Co., Ltd. of Japan elasticity tape measure (tape portion: be base material with glass fibre take polrvinyl chloride as cover layer) and to make its mode along measuring object position measure the length under this state at measuring object position.In addition, for the length of elongation state, measure in length disposable diaper 10 having been extended to measuring object position when passing through till range estimation cannot observe the state of the fold produced because of elastic component from naturalness.
At this, under respective state, described measurement is carried out for 10 samples, and its meansigma methods is set to length.
In addition, a pair leg side rivel 80 extended along product length direction L is provided with in the inner side (the central side by the W of product width direction) of a pair leg pars contractilis 75.Leg side rivel 80 is located at the medial end on the product width direction of flank 70, for being configured at than the flexible rivel of leg pars contractilis 75 by the erecting inside product width direction.Leg side rivel 80 is configured at than leg pars contractilis 75 by the position inside product width direction.Leg side rivel 80 can adopt known structure, specifically, also can by with flank 70 phase independently sheet material formed.
Disposable diaper 10 has waist stretchable sheet, and this waist stretchable sheet is crossed over the center, product width direction of disposable diaper and have retractility on product width direction.Waist stretchable sheet has the posterior lumbar stretchable sheet 85 of the rear end being configured at disposable diaper and is configured at the front side waist portion stretchable sheet 86 of anterior end of disposable diaper.In addition, in FIG, the center, product width direction by disposable diaper is shown and the imaginary line L1 extended along product length direction.
The rear end 10R of disposable diaper has the center, product width direction of rear end 10R than the curved shape caved in inside the product length direction, lateral, product width direction of rear end 10R under the naturalness of disposable diaper.The rear end being positioned at the posterior lumbar stretchable sheet 85 of the rear end of disposable diaper also has center, product width direction in its natural state than the curved shape caved in inside product length direction, lateral, product width direction.
In addition, under the elongation state (state shown in Fig. 1) extended making disposable diaper, the anterior end 85F of posterior lumbar stretchable sheet 85 has the center, product width direction of anterior end 85F than the curved shape caved in outside the product length direction, lateral, product width direction of anterior end 85F.In addition, the curved shape of posterior lumbar stretchable sheet is not formed at the whole region of anterior end 85F, but is formed at the width central authorities as a part for anterior end.
Posterior lumbar stretchable sheet 85 is configured between a pair magic tape on product width direction.A part of the anterior end 85F of posterior lumbar stretchable sheet 85 is overlapping with absorbent core 40a.The rear end 85R of posterior lumbar stretchable sheet 85 aligns with the rear end of disposable diaper.Length on the product width direction of posterior lumbar stretchable sheet 85 is longer than the length on the product width direction of absorbent core 40a and is longer than the length on the width of back sheet 60a.Posterior lumbar stretchable sheet extends to and to extend to than the position of back sheet 60a by the outside on product width direction by the position in the outside on product width direction than absorbent core 40a.A part for posterior lumbar stretchable sheet 85 configures in the mode overlapping with waistline maintaining part.
The anterior end 10F of disposable diaper has the center, product width direction of anterior end 10F than the curved shape caved in inside the product length direction, lateral, product width direction of anterior end 10F under the naturalness of disposable diaper.The anterior end 86F being positioned at the front side waist portion stretchable sheet 86 of the anterior end of disposable diaper also has the center, product width direction of anterior end 86F in its natural state than the curved shape caved in inside the product length direction, lateral, product width direction of anterior end 86F.
In addition, under the elongation state (state shown in Fig. 1) extended making disposable diaper, the rear end 86R of front side waist portion stretchable sheet 86 has the center, product width direction of rear end 86R than the curved shape caved in outside the product length direction, lateral, product width direction of rear end 86R.In addition, the curved shape of front side waist portion stretchable sheet is not formed at the whole region of rear end 86R, but is formed at the width central authorities as a part of rear end 86R.
Front side waist portion stretchable sheet 86 is adjacent with target portion 95 with absorbent core 40a on product length direction.More specifically, the rear end 86R of front side waist portion stretchable sheet 86 is adjacent with the anterior end of absorbent core 40a and adjacent with the anterior end of target portion 95.The rear end 86R of front side waist portion stretchable sheet 86 is positioned at than absorbent core 40a in the outer part and than target portion 95 position in the outer part on product length direction.In addition, the state that front side waist portion stretchable sheet 86 is adjacent with absorbent core 40a and front side waist portion stretchable sheet 86 state adjacent with target portion 95 refer to that distance is with each other the state of 0mm ~ 5mm.
The anterior end 86F of front side waist portion stretchable sheet 86 aligns with the anterior end of disposable diaper.Length on the product width direction of front side waist portion stretchable sheet 86 is longer than the length on the product width direction of absorbent core 40a and is longer than the length on the width of back sheet 60a.Front side waist portion stretchable sheet 86 extends to and to extend to than the position of back sheet 60a by the outside on product width direction by the position in the outside on product width direction than absorbent core 40a.
The rear end 86R of front side waist portion stretchable sheet 86 is adjacent with absorbent core 40a and adjacent with target portion 95 on product length direction.The rear end 86R of front side waist portion stretchable sheet 86 is positioned at than absorbent core 40a in the outer part and than target portion 95 position in the outer part on product length direction.
The anterior end 60aF of back sheet 60a is between the anterior end 10F and the anterior end of absorbent core 40a of disposable diaper, and the rear end 60aR of back sheet 60a is between the rear end 10R and the rear end of absorbent core 40a of disposable diaper.
In the present embodiment, as waist stretchable sheet, preferably use when along a direction elongation of sheet time, sheet the sheet of the narrowed width (carrying out so-called contracting width) on 2nd direction orthogonal with prolonging direction.
As waist stretchable sheet, can use by have elasticity and extensibility elastic fiber and do not have sheet that elasticity but the mixture with these two kinds of fiber mixing of non-elastic fiber of extensibility make, particularly grammes per square metre can be used to be 20g/m
2~ 80g/m
2, be more preferably 40g/m
2~ 75g/m
2, more preferably 50g/m
2~ 70g/m
2spun-bonded non-woven fabrics sheet, in this spun-bonded non-woven fabrics sheet, elastic fiber is the long filament of the polyurethane fiber of the fiber number with 2dtex ~ 6dtex, non-elastic fiber is at least one long filament in the long filament of the polyolefine fiber of the fiber number with 2dtex ~ 6dtex, polyester fiber and this three of Fypro, by elastic fiber and described non-elastic fiber the Mixing ratio by weight between elastic fiber with described non-elastic fiber be 40:60 ~ 60:40 scope in coordinate.Utilize gear that a part for the non-elastic fibrous layer of the non-woven fabrics as the fiber mixed by non-elastic fiber and elastic fiber is ruptured, thus make this non-woven fabrics show retractility.As other waist stretchable sheets, if it can carry out the sheet of contracting width, then can become in this structure relatively easily, carry out contracting width after shape.In addition, waist stretchable sheet is not limited to non-woven fabric plate, also can be formed by diaphragm.In addition, also can use and prepare telescopic sheet in advance, then with the sheet making the mode of the change width on the length direction of product (cutting to make its mode protruded towards inner side) carry out predeformation to this telescopic sheet.Waist stretchable sheet is adhered to outer load 60 by hot-melt adhesive or heat treated etc.
The percentage elongation of posterior lumbar stretchable sheet 85 is preferably 1.4 times ~ 1.8 times.In the present embodiment, the percentage elongation of posterior lumbar stretchable sheet 85 is set as 1.5 times ~ 1.6 times.In addition, percentage elongation refers to the elongation degree of posterior lumbar stretchable sheet, specifies in the following way.
Percentage elongation=(length under the elongation state of posterior lumbar stretchable sheet) ÷ (length under the naturalness of posterior lumbar stretchable sheet) of posterior lumbar stretchable sheet
The percentage elongation of front side waist portion stretchable sheet 86 is preferably 1.3 times ~ 1.7 times.In the present embodiment, the percentage elongation of front side waist portion stretchable sheet 86 is set as 1.4 times ~ 1.6 times.In addition, percentage elongation refers to the elongation degree of front side waist portion stretchable sheet, specifies in the following way.
Percentage elongation=(length under the elongation state of front side waist portion stretchable sheet) ÷ (length under the naturalness of front side waist portion stretchable sheet) of front side waist portion stretchable sheet
By arranging the waist stretchable sheet of such plate shape, thus the region (near waist opening portion) making to be configured with waist stretchable sheet with face along health.Therefore, it is possible to preferably cover the health of wearer.On the other hand, in the structure of elastic component arranging multiple wire, the elastic-member portions of wire along health, but is strictly said, the part between the elastic component of wire is not contacted with health.Therefore, the elastic-member portions of wire easily produces skew etc. with line along health, thus can not cover the health of wearer fully.In addition, because waist stretchable sheet itself has elasticity, therefore the flexibility of waist stretchable sheet is also excellent, can give buffering sense to section.Further, under the contracted state of waist stretchable sheet, the part being configured with waist stretchable sheet easily becomes fluffy state, thus becomes state also excellent in feel.
In the present embodiment, waist stretchable sheet is engaged in the sheet configured with hold this waist telescopic sheet.Specifically, waist stretchable sheet is configured between outer load 60 and back sheet 60a.But extend at core covering 40b and lean in the structure of the position outside product length direction than absorbent core 40a, waist stretchable sheet also can be configured between core covering 40b and back sheet 60a or between core covering 40b and outer load 60.The position of waist stretchable sheet is not particularly limited.In addition, in the region not configuring absorber, waist stretchable sheet also can be configured between flank 70 and back sheet 60a or between flank 70 and outer load 60.Waist stretchable sheet is adhered to outer load 60 etc. by hot-melt adhesive or heat treated etc.
In the region being configured with waist stretchable sheet, the joint of sheet (specifically, positive dough sheet, back sheet, waist stretchable sheet) each other utilizes the bonding agent (hot-melt adhesive) be coated with discontinuously to fix.Being coated with discontinuously is not state with planar coating, and refers to and describe with the bonding agent of wire the state that the spiral-shaped grade of S shape is coated with.
Posterior lumbar stretchable sheet 85 is with configuring mode overlapping with a part for the low rigidity portion 110 of absorber during disposable diaper planar development.In addition, in the present embodiment, posterior lumbar stretchable sheet 85 configures in the mode overlapping with a part for low rigidity portion 110, but also can be, whole posterior lumbar stretchable sheet 85 configures in the mode overlapping with low rigidity portion 110.
By forming such low rigidity portion 110, do not hinder the flexible of posterior lumbar stretchable sheet 85, even if posterior lumbar stretchable sheet 85 shrinks, because low rigidity portion 110 narrows, than low rigidity portion 110 by both sides, product width direction absorber between narrower intervals, therefore absorber 40 be also difficult to expect beyond shape protuberance.The part being formed with low rigidity portion 110 is difficult to protuberance, and this low rigidity portion 110 being difficult to swell is formed at the product width direction central authorities of disposable diaper.Therefore, it is possible to produce step between decrease uptake core and waist stretchable sheet on the product width direction of disposable diaper.In addition, also can be not only form low rigidity portion in the rear end of absorber, and also form low rigidity portion in the anterior end of absorber.
In addition, the waist stretchable sheet of present embodiment is configured to flexible along product width direction, but waist stretchable sheet also can be configured to stretch along product width direction and product length direction.
Magic tape 90 is installed on the region corresponding with rear waist area 30 of flank 70.Magic tape 90 comprises: substrate sheets 91, and itself and flank 70 are connected; And hook tabs 92, it is fixed on substrate sheets 91, is provided with multiple clamping hooked as fastened component (not shown) in this hook tabs 92.Hook tabs 92 is the regions being provided with fastened component, and the waistline maintaining part in described rear waist area is the region extended along product width direction from hook tabs 92.
Hook tabs 92 is fixed on substrate sheets 91, and specifically, hook tabs 92 is engaged in substrate sheets 91.Joint between hook tabs 92 and substrate sheets 91 is not preferably to make the high mode more than required degree of the rigidity of magic tape 90 carry out.Specifically, the hot-melt adhesive be coated with discontinuously that hook tabs 92 and substrate sheets 91 preferably utilize point-like, wire or helical form such engages.In addition, hook tabs 92 and substrate sheets 91 also can utilize heat-sealing etc. to engage.
Substrate sheets 91 is formed by the non-woven fabrics of multiple overlaps of more than or two.As substrate sheets 91, the non-woven fabrics utilizing the manufacture method manufacture such as spunbond (SB) or spunbond-melt blown-spunbond (SMS) can be used.The weight per unit area (multiple when be summation unit area weight) forming the non-woven fabrics of substrate sheets 91 is 30g/m
2~ 120g/m
2, be preferably 40g/m
2~ 90g/m
2.
Magic tape comprises: base portion 93, and it is overlapping with outer load; And extension 94, it extends to than outer load by the position outside product width direction.Base portion 93 is under the state expanded by magic tape in substrate sheets 91, overlapping with outer load parts.Extension 94 is parts in substrate sheets 91, not overlapping with outer load.Under the elongation state of the disposable diaper shown in Fig. 1, on product length direction, align with the center, product length direction of base portion in the center, product length direction of extension.But, under the naturalness of disposable diaper, bending along with posterior lumbar stretchable sheet 85, the position of magic tape can change, thus makes the product length direction of extension be centrally located at center, product length direction than base portion by the position outside product length direction.
In addition, in the present invention, the state of component overlap is following concept, that is, not only comprise the state that component is directly overlapping each other, but also comprises the state (state that the ground that is clipped in the middle by other components is overlapping) of component ground connection overlap to each other.
Target portion 95 is located at the side by non-skin contact side of the outer load 60 of front waist area.Target portion 95 is configured to the clamping hooked hook for magic tape, waves function as the environment-development comprised in the locking system of hook and ring.Target portion such as can use hot-wind nonwoven cloth.
Target portion 95 such as can use the thermoplastic synthetic resin film of fabric nonwoven cloth or the TPO be made up of the thermoplastic synthetic resin fiber of TPO.In addition, the ring being installed on target portion can be formed by the thermoplastic synthetic resin of TPO.
In addition, as target portion 95, fluffy, by preventing nonwoven surface from fluffing a part of embossing of non-woven fabrics non-woven fabrics also can be used.
In addition, also can by being formed the outer load 60 of disposable diaper by non-woven fabrics, the pattern of the installation site representing magic tape 90 is printed on the side by non-skin contact side of back sheet 60a or outer load 60, or the sheet of pattern is configured in the non-skin contact side of back sheet 60a or outer load 60, thus is set to target portion.
When dressing disposable diaper, dress auxiliary by the magic tape of rear waist area side, waist area tractive forward.Dress auxiliary, under the state of front waist area of being furthered to by magic tape, magic tape is bonded to target portion.
(2) manufacture method of disposable diaper
Then, an example of the manufacture method of the disposable diaper of present embodiment is described.In addition, unaccounted method can use existing method in the present embodiment.In addition, manufacture method illustrated is below an example, and other manufacture method also can be utilized to manufacture.The manufacture method of disposable diaper at least comprises constituent part formation process, constituent part loads operation, lower limb encloses formation process and cuts operation.
In the manufacture method of disposable diaper, be fabricated to the continuum of disposable diaper continuous print state on product length direction, by the size that this continuum is cut into a product along product width direction W, manufacture each disposable diaper thus.
In constituent part formation process, form the constituent part forming disposable diaper.Specifically, such as, stacked absorbing material and molding absorbent core 40a.
In constituent part mounting operation, form back sheet, continuous print to knit on sheet mounting form waist stretchable sheet, positive dough sheet, continuous print knit sheet etc. other knit the constituent part that sheet, absorber, leg pars contractilis 75, auxiliary telescopic portion 77 etc. form disposable diapers 10.
Now, waist stretchable sheet is by state integrated for the posterior lumbar stretchable sheet 85 of the front side waist portion stretchable sheet 86 of arbitrary disposable diaper and the disposable diaper adjacent with this arbitrary disposable diaper.Utilize the both ends (becoming the part of product width direction outboard end under the state being configured as disposable diaper) attracting parts etc. to keep this telescopic sheet, make telescopic sheet along the product width direction elongation of disposable diaper and this telescopic sheet is pasted onto continuous print to knit on sheet.Due under the state that is maintained at the both ends of this telescopic sheet, telescopic sheet is extended, therefore the both ends of telescopic sheet there is no elongation.Percentage elongation on the product width direction at the both ends of telescopic sheet is lower than the percentage elongation on the product width direction in the region between these both ends of telescopic sheet.
Specifically, being configured with in the region of waist stretchable sheet at disposable diaper, is formed with 3 subregions that percentage elongation is different.The region by being configured with waist stretchable sheet product width direction central authorities be set to middle section, the end, product width direction (being equivalent to the both ends of waist stretchable sheet) being configured with the region of waist stretchable sheet is set to lateral region, the region between middle section and lateral region is set to zone line time, the relation of percentage elongation meets: the percentage elongation on the product width direction of the percentage elongation > lateral region on the product width direction of the percentage elongation > zone line on the product width direction of middle section.
Percentage elongation on the product width direction of middle section can be set to 1.4 times ~ 1.8 times.Percentage elongation on the product width direction of lateral region is set lower than the percentage elongation on the product width direction of middle section, 1.0 times ~ 1.1 times can be set it to.Percentage elongation on the product width direction of zone line is set lower than the percentage elongation on the product width direction of middle section and higher than the percentage elongation of lateral region, 1.2 times ~ 1.3 times can be set to.In addition, the percentage elongation on the product width direction of lateral region can be 1.0 times, and lateral region can be the region of not extending in fact.
In addition, the telescopic sheet extended along product width direction is along product length direction contracting width.Particularly, the product width direction central authorities contracting width of telescopic sheet.Therefore, for the telescopic sheet under elongation state, the length on the product length direction being shorter in length than end, product width direction on the product length direction of its product width direction central authorities.State with contracting width like this paste after telescopic sheet become as shown in Figure 1 the end be equivalent on the product length direction of telescopic sheet, the width central authorities of the rear end of front side waist portion stretchable sheet and both anterior end of posterior lumbar stretchable sheet are than the curved shape caved in outside width.
Lower limb encloses formation process and aligns dough sheet 50, outer load 60 and back sheet 60a and cut.Thus, the anterior end 77F in auxiliary telescopic portion 77 is cropped, and the leg opening part 35 that the lower limb that formation is configured at wearer encloses.
Cutting in operation, the continuum being configured with positive dough sheet 50, back sheet 60a, absorber 40 etc. is being cut into the size of a product along product width direction W.Thus, disposable diaper 10 is manufactured.
Continuum is cut by by each product, thus be located at the waist stretchable sheet of disposable diaper, the elongation state of leg pars contractilis is become naturalness by removing.After releasing elongation state, the waist stretchable sheet under the state of carrying out contracting width when extending is out of shape in the mode of the state before returning to contracting width.Therefore, although the anterior end of the rear end of posterior lumbar stretchable sheet and front side waist portion stretchable sheet is linearity under elongation state, case of bending is deformed in its natural state.
In addition, when continuum is become naturalness by cutting by each product, compared with the rear end of front side waist portion stretchable sheet, the anterior end of front side waist portion stretchable sheet is shunk, compared with the anterior end of posterior lumbar stretchable sheet, the rear end of posterior lumbar stretchable sheet is shunk.The anterior end of front side waist portion stretchable sheet is than the rear end of front side waist portion stretchable sheet away from absorbent core 40a, thus the anterior end of front side waist portion stretchable sheet is not shunk more by the impact of the rigidity of absorbent core 40a.The rear end of posterior lumbar stretchable sheet is than the anterior end of posterior lumbar stretchable sheet away from absorbent core 40a, thus the rear end of posterior lumbar stretchable sheet is not shunk more by the impact of the rigidity of absorbent core 40a.
Compared with the rear end of front side waist portion stretchable sheet, the anterior end of front side waist portion stretchable sheet is shunk, thus the anterior end of disposable diaper becomes its center, product width direction than the curved shape caved in inside the product length direction, lateral, product width direction of the anterior end of disposable diaper.Similarly, compared with the anterior end of posterior lumbar stretchable sheet, the rear end of posterior lumbar stretchable sheet is shunk, thus the rear end of disposable diaper becomes its center, product width direction than the curved shape caved in inside the product length direction, lateral, product width direction of the rear end of disposable diaper.
(3) action effect
The rear end of posterior lumbar stretchable sheet 85 and absorbent core 40a is overlapping, and posterior lumbar stretchable sheet 85 and absorbent core 40a do not separate.Such as, the region projection sometimes between waist stretchable sheet and absorbent core 40a, step varied in thickness being caused because of this region are obvious.But, because a part for posterior lumbar stretchable sheet 85 is overlapping with the rear end of absorbent core 40a, therefore, it is possible to utilize this lap to make thickness progressively change.
In addition, a part for posterior lumbar stretchable sheet 85 is overlapping with waistline maintaining part.Therefore, it is possible to suppress the region projection between waistline maintaining part and waist stretchable sheet or this region to produce step relative to waistline maintaining part etc.
By making step go to diminish gradually towards the rear end of disposable diaper, the sense of discomfort that step brings to skin can be suppressed.In addition, because the thickness of disposable diaper changes smoothly, therefore, it is possible to realize the such outward appearance of underwear.Such disposable diaper can suppress discontented, outward appearance aspect discontented for the burden caused the skin of user.
In addition, the thickness (naturalness) being configured with the part of waist stretchable sheet of the disposable diaper of present embodiment is about 1.5mm ~ 3.0mm, the thickness being configured with the part of absorbent core is about 3.5mm ~ 4.5mm, and the thickness of the end, product length direction (not configuring the part of back sheet) of disposable diaper is about 1.0mm ~ 2.0mm.
Front side waist portion stretchable sheet 86 configures in the mode adjacent with the anterior end of absorbent core 40a, and the region that thickness is thickening because of front side waist portion stretchable sheet is adjacent with the region that thickness is thickening because of absorbent core 40a.Therefore, in front waist area, the thickness of disposable diaper also can be made to change smoothly and realize the such outward appearance of underwear.
The anterior end 60aF of back sheet is between the anterior end 10F and the anterior end of absorbent core 40a of disposable diaper, and the rear end 60aR of back sheet is between the rear end and the rear end of absorbent core 40a of disposable diaper.Varied in thickness because causing with or without back sheet being set by the region between absorbent core 40a and the end, product length direction of disposable diaper, thickness can be made to change more smoothly.
The rear end 86R of front side waist portion stretchable sheet 86 configures in the mode adjacent with the anterior end of target portion, and not overlapping with target portion front side waist portion stretchable sheet 86 shrinks under the naturalness of disposable diaper.On the other hand, target portion 95 is the positions for fixing magic tape, can produce fold when this position is shunk, thus makes the engaging of magic tape (joint) become insufficient.In addition, usually, compared with other sheets (positive dough sheet back sheet etc.) of disposable diaper, magic tape portion uses high weight per unit area or the higher sheet of rigidity mostly.Therefore, when magic tape want set target portion shrink time, easily become the impression with magic tape, foreign body sensation.Therefore, preferably, do not make front side waist portion stretchable sheet and target portion overlap, but front side waist portion stretchable sheet and target portion are adjacent to configuration.
The positive dough sheet with high weight per unit area portion and low weight per unit area portion is at least configured in autogamy and is equipped with the region of waist stretchable sheet in the scope of the end, product length direction of disposable diaper.At least be configured in the region that autogamy is equipped with waist stretchable sheet to refer to the state in the scope of the end, described product length direction of disposable diaper, cover posterior lumbar stretchable sheet and be configured in and be configured in from this front side waist portion stretchable sheet to the state in the scope of the anterior end of disposable diaper to the state in the scope of the rear end of disposable diaper and covering front side waist portion stretchable sheet from this posterior lumbar stretchable sheet.
By using the positive dough sheet with high weight per unit area portion and low weight per unit area portion, under the contracted state of waist stretchable sheet, become low weight per unit area portion and be easy to shrink and make adjacent low weight per unit area portion and high weight per unit area portion state adjacent to each other.That is, under the naturalness of disposable diaper, the part being configured with this positive dough sheet is easy to become more fluffy state, thus is easy to realize thickness sense while the state maintaining softness.As a result, can become in the scope of the end, product length direction of self-priming acceptor to the end, product length direction of disposable diaper, more can not to feel the state of difference of thickness.
At least one in positive dough sheet and outer load by do not have the colored area occupation ratio of the non-woven fabric plate of the hot melt contact formed by an embossing, line pressure flower or some embossing, line pressure be 5% ~ 15% non-woven fabric plate formed.For the positive dough sheet formed by such non-woven fabric plate and outer load, the part not forming hot melt contact and the degree of freedom not forming the fiber in the part of embossing higher.Therefore, the part that the degree of freedom of this fiber is higher is easy to fluffy in its natural state.As a result, can become in the scope of the end, product length direction of self-priming acceptor to the end, product length direction of disposable diaper, more can not to feel the state of difference of thickness.
Waist stretchable sheet is engaged in the sheet configured with hold this waist stretchable sheet by bonding agent, because bonding agent is coated with discontinuously, therefore the abutment of sheet is less.Under the contracted state of waist stretchable sheet, the product thickness become in disengaged portion (part of uncoated bonding agent) becomes large and that flexibility is higher state.
The thickness of the end, product length direction of absorbent core is less than the thickness of the product length direction central authorities of absorbent core.End, product length direction from the lower crotch of disposable diaper towards absorber goes and the end, product length direction of self-priming acceptor is gone towards the end, product length direction of disposable diaper, and thickness changes lentamente.User more not easily feels the step sense of disposable diaper.
(4) other embodiments
As mentioned above, disclose content of the present invention by embodiments of the present invention, but should not be construed form the disclosure the discussion of a part and accompanying drawing for limiting the present invention.To those skilled in the art, various replacement embodiment, embodiment and application technology can be specified from the disclosure.
In variation, front side waist portion stretchable sheet also can configure in the mode overlapping with the anterior end of absorbent core 40a.
In variation, the anterior end of back sheet both can extend to the anterior end of disposable diaper, also can be positioned at the position of the anterior end side rearward than absorbent core.In variation, the rear end of back sheet both can extend to the rear end of disposable diaper, also can be positioned at the position of side more forward than the rear end of absorbent core.
In variation, the length on the product length direction of lateral region both can be identical with the length on the product length direction of middle section, also can be less than the length on the product length direction of middle section.
In variation, the rear end of front side waist portion stretchable sheet also can configure in the mode overlapping with the anterior end of target portion.
In variation, also can add and can survey from the non-skin contact face sidelong glance of disposable diaper the pattern observed by sheet overleaf.Pattern both can be formed by printing, also can be formed by any one method in embossing processing, thermal welding and ultrasonic sealing.
Pattern arrangement is in the region overlapping with the property received core.In addition, pattern not to be configured between the anterior end of disposable diaper and the anterior end of absorbent core and not to be configured between the rear end of disposable diaper and the rear end of absorbent core.Pattern be not configured at the position close to waist and be not configured at there is no absorbent core and make the color etc. of the skin of wearer be easy to through position.People is made to remember the impression that the section of underwear is such therefore, it is possible to bring.
In variation, the non-woven fabric plate that positive dough sheet also can can't help alternately to have high weight per unit area portion and low weight per unit area portion on described product width direction is formed.
In variation, the non-woven fabric plate that positive dough sheet both can can't help not have the hot melt contact formed by an embossing, line pressure flower is formed, also can can't help the colored area occupation ratio of an embossing, line pressure be 5% ~ 15% non-woven fabric plate formation.Further, the non-woven fabric plate that outer load both can can't help not have the hot melt contact formed by an embossing, line pressure flower is formed, also can can't help the colored area occupation ratio of an embossing, line pressure be 5% ~ 15% non-woven fabric plate formation.
In variation, also can be the bonding agent be used for waist stretchable sheet and the sheet of clamping waist stretchable sheet engage is not configured discontinuously, but this bonding agent is configured at whole.
In variation, the thickness of the end, product length direction of absorbent core both can be identical with the thickness of the product length direction central authorities of absorbent core, also may be thicker than the thickness of the product length direction central authorities of absorbent core.
As mentioned above, certainly, the present invention is included in this various embodiments etc. do not recorded.Thus, protection scope of the present invention is only limited by the technical characteristic of the claims gone out according to described explanation reasonable generalization.
In addition, by the full content of No. 2013-156040, Japan's patent application (application on July 26th, 2013) by referring to enrolling present specification.
utilizability in industry
A kind of discontented disposable diaper that can suppress discontented, outward appearance aspect for the burden caused skin can be provided.
description of reference numerals
10, disposable diaper; 20, front waist area; 25, lower crotch region; 30, rear waist area; 35, leg opening part; 40, absorber; 40a, absorbent core; 40b, core covering; 50, positive dough sheet; 60, outer load; 60a, back sheet; 70, flank; 75, leg pars contractilis; 75F, anterior end; 75R, rear end; 77, auxiliary telescopic portion; 77F, anterior end; 77R, rear end; 80, leg side rivel; 81, elastic component; 85, posterior lumbar stretchable sheet; 85F, anterior end; 85R, rear end; 86, front side waist portion stretchable sheet; 86F, anterior end; 86R, rear end; 90, magic tape; 91, substrate sheets; 92, hook tabs; 93, base portion; 94, extension; 95, target portion; 110, low rigidity portion; L, product length direction; W, product width direction.
Claims (8)
1. a disposable diaper, it comprises: front waist area; Rear waist area; Lower crotch region, it is between described front waist area and described rear waist area; Product length direction, its from described front waist area towards described rear waist area; Product width direction, it is orthogonal with described product length direction; Absorber, it crosses over described lower crotch region, and extends at least one in described front waist area and described rear waist area, and this absorber has absorbent core; A pair magic tape, it is configured at the outboard end on the product width direction of described rear waist area, is bonded to described front waist area; Waist stretchable sheet, it crosses over the center in the described product width direction of disposable diaper, and has retractility on described product width direction; And waistline maintaining part, it extends along product width direction in described front waist area and described rear waist area, for disposable diaper being held in the health of wearer, wherein,
Described waist stretchable sheet has the posterior lumbar stretchable sheet of the rear end being configured at described rear waist area and is configured at the front side waist portion stretchable sheet of anterior end of described front waist area,
A part for described posterior lumbar stretchable sheet configures in the mode overlapping with the rear end of described absorbent core and configures in the mode overlapping with described waistline maintaining part,
Described front side waist portion stretchable sheet configures in the mode adjacent with the anterior end of described absorbent core.
2. disposable diaper according to claim 1, wherein,
This disposable diaper comprises the back sheet of opaque liquid, and this back sheet is configured at the side, non-skin contact face of described absorber,
The anterior end of described back sheet between the described anterior end and the anterior end of described absorbent core of described disposable diaper,
The rear end of described back sheet is between the described rear end and the rear end of described absorbent core of described disposable diaper.
3. disposable diaper according to claim 2, wherein,
Be formed can survey from the non-skin contact face sidelong glance of described disposable diaper the pattern observed at described back sheet,
Described pattern arrangement is in the region overlapping with described absorbent core and be not configured between the described anterior end of described disposable diaper and the anterior end of described absorbent core and between the described rear end of described disposable diaper and the rear end of described absorbent core.
4. disposable diaper according to any one of claim 1 to 3, wherein,
Be configured with in described front waist area described magic tape want the target portion of set,
The rear end of described front side waist portion stretchable sheet configures in the mode adjacent with the anterior end of described target portion.
5. disposable diaper according to any one of claim 1 to 4, wherein,
This disposable diaper comprises positive dough sheet, and this positive dough sheet is configured at the surface by skin contact side of described disposable diaper,
Described positive dough sheet is at least configured in self-configuring has the region of described waist stretchable sheet in the scope of the end in the described product length direction of described disposable diaper,
Described positive dough sheet is formed by the non-woven fabric plate alternately on described product width direction with high weight per unit area portion and low weight per unit area portion.
6. disposable diaper according to any one of claim 1 to 4, wherein,
This disposable diaper comprises:
Outer load, it is configured at the surface by non-skin contact side of described disposable diaper; And
Positive dough sheet, it is configured at the surface by skin contact side of described disposable diaper,
At least one in described positive dough sheet and described outer load by do not have the colored area occupation ratio of the non-woven fabric plate of the hot melt contact formed by an embossing, line pressure flower or some embossing, line pressure be 5% ~ 15% non-woven fabric plate formed,
Described one in described positive dough sheet and described outer load is at least configured at self-configuring has the region of described waist stretchable sheet in the scope of the end in the described product length direction of described disposable diaper.
7. disposable diaper according to any one of claim 1 to 6, wherein,
Described waist stretchable sheet is engaged in the sheet configured with hold this waist stretchable sheet by bonding agent, described bonding agent is coated with discontinuously.
8. disposable diaper according to any one of claim 1 to 7, wherein,
The thickness of the end in the described product length direction of described absorbent core is thinner than the thickness of the central authorities in the described product length direction of described absorbent core.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-156040 | 2013-07-26 | ||
| JP2013156040A JP6250969B2 (en) | 2013-07-26 | 2013-07-26 | Disposable diapers |
| PCT/JP2014/068708 WO2015012146A1 (en) | 2013-07-26 | 2014-07-14 | Disposable diaper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105407847A true CN105407847A (en) | 2016-03-16 |
| CN105407847B CN105407847B (en) | 2018-11-13 |
Family
ID=52393190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480042291.9A Active CN105407847B (en) | 2013-07-26 | 2014-07-14 | Disposable diaper |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JP6250969B2 (en) |
| KR (1) | KR102315291B1 (en) |
| CN (1) | CN105407847B (en) |
| AU (1) | AU2014294222A1 (en) |
| MY (1) | MY168610A (en) |
| PH (1) | PH12016500062A1 (en) |
| SA (1) | SA516370466B1 (en) |
| TW (1) | TW201517887A (en) |
| WO (1) | WO2015012146A1 (en) |
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| CN114376798A (en) * | 2018-04-03 | 2022-04-22 | 尤妮佳股份有限公司 | Pants-type disposable diaper |
| CN114502125A (en) * | 2019-09-30 | 2022-05-13 | 尤妮佳股份有限公司 | Absorbent article |
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| JP6601795B2 (en) * | 2015-09-28 | 2019-11-06 | 大王製紙株式会社 | Disposable diapers |
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| JP5243638B1 (en) * | 2012-03-30 | 2013-07-24 | ユニ・チャーム株式会社 | Disposable diapers |
-
2013
- 2013-07-26 JP JP2013156040A patent/JP6250969B2/en active Active
-
2014
- 2014-07-14 CN CN201480042291.9A patent/CN105407847B/en active Active
- 2014-07-14 AU AU2014294222A patent/AU2014294222A1/en not_active Abandoned
- 2014-07-14 WO PCT/JP2014/068708 patent/WO2015012146A1/en active Application Filing
- 2014-07-14 KR KR1020167001027A patent/KR102315291B1/en active IP Right Grant
- 2014-07-14 MY MYPI2015704799A patent/MY168610A/en unknown
- 2014-07-25 TW TW103125500A patent/TW201517887A/en unknown
-
2016
- 2016-01-08 PH PH12016500062A patent/PH12016500062A1/en unknown
- 2016-01-25 SA SA516370466A patent/SA516370466B1/en unknown
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| EP0832629A2 (en) * | 1996-09-30 | 1998-04-01 | Uni-Charm Corporation | Disposable diaper |
| JP2001346827A (en) * | 2000-06-09 | 2001-12-18 | Daio Paper Corp | Disposable paper diaper |
| US20080236737A1 (en) * | 2000-12-21 | 2008-10-02 | Radhakrishnan Janardanan Nair | Diaper Including Ink-Printed Substrate Web |
| US20050273071A1 (en) * | 2004-06-04 | 2005-12-08 | Mckiernan Robin L | Absorbent articles comprising a slow recovery stretch laminate |
| JP2008025079A (en) * | 2006-06-23 | 2008-02-07 | Uni Charm Corp | Nonwoven fabric |
| CN101765416A (en) * | 2008-02-19 | 2010-06-30 | 尤妮佳股份有限公司 | Absorptive article |
| CN201692167U (en) * | 2010-06-29 | 2011-01-05 | 覃叙钧 | Novel elastic paper diaper of elastic waist |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114376798A (en) * | 2018-04-03 | 2022-04-22 | 尤妮佳股份有限公司 | Pants-type disposable diaper |
| CN114376798B (en) * | 2018-04-03 | 2022-12-20 | 尤妮佳股份有限公司 | Pants-type disposable diaper |
| CN114502125A (en) * | 2019-09-30 | 2022-05-13 | 尤妮佳股份有限公司 | Absorbent article |
| CN114502125B (en) * | 2019-09-30 | 2023-11-28 | 尤妮佳股份有限公司 | Absorbent article |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201517887A (en) | 2015-05-16 |
| KR20160037884A (en) | 2016-04-06 |
| CN105407847B (en) | 2018-11-13 |
| WO2015012146A1 (en) | 2015-01-29 |
| JP6250969B2 (en) | 2017-12-20 |
| SA516370466B1 (en) | 2019-11-13 |
| JP2015024051A (en) | 2015-02-05 |
| KR102315291B1 (en) | 2021-10-20 |
| PH12016500062B1 (en) | 2016-03-21 |
| PH12016500062A1 (en) | 2016-03-21 |
| AU2014294222A1 (en) | 2016-02-04 |
| MY168610A (en) | 2018-11-14 |
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