CN106456389B

CN106456389B - Flat type disposable diaper of the weight in 3000g low weight baby below

Info

Publication number: CN106456389B
Application number: CN201580026920.3A
Authority: CN
Inventors: 矶贝友美; 三宅真纪; 坂口智
Original assignee: Limited Co Ltd
Current assignee: Limited Co Ltd
Priority date: 2014-05-27
Filing date: 2015-03-10
Publication date: 2019-11-05
Anticipated expiration: 2035-03-10
Also published as: TWI650108B; BR112016024564A2; JP6400945B2; AU2015265241B2; TW201607515A; WO2015182210A1; CN106456389A; AU2015265241A1; KR20170009829A; JP2015223254A; MY179319A

Abstract

A kind of flat type disposable diaper (1) of weight in 3000g low weight baby below, diaper (1) has calf circumference elastic component (21), calf circumference elastic component is for making leg-openings (HL) along longitudinal contraction, and calf circumference elastic component is respectively along longitudinally disposed at the position of the two sides in the transverse direction of crotch (1m).Drosal part (1b) has waistline elastic piece (31), and for waistline elastic piece for shrinking in the transverse direction waistline opening (HB), waistline elastic piece is set as extending to the two sides in transverse direction.In the state that diaper (1) is unfolded, horizontally, end in the transverse direction of waistline elastic piece (31) is located at the lateral outer side of the end of position identical with the position of end of longitudinal back side of immediate calf circumference elastic component (21) or the calf circumference elastic component (21) being located nearest to, and waistline elastic piece (31) be configured to along longitudinal direction across fixing belt (11) joint portion (11m) longitudinal central location (C11m).

Description

Flat type disposable diaper of the weight in 3000g low weight baby below

Technical field

The present invention relates to a kind of weight 3000g low weight baby below flat type disposable diaper.

Background technique

Traditionally, it is known that flat type disposable diaper (open-type disposable diaper).The deploying type is primary Property diaper include the veutro portion, crotch and drosal part configured along longitudinal direction, and in the plan view have general hourglass shape.Then, The fixing belt at the both ends being arranged in the transverse direction of drosal part is engaged with the object tape of veutro portion, thus form waistline opening and A pair of leg circumference opening, the diaper are worn by diaper user.

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2002-253608 bulletin

Summary of the invention

Problems to be solved by the invention

On the other hand, body focuses on 3000g low birth weight baby below.In addition, the low weight baby may be Their plenty of time is spent to be in the flexion posture of the fetus shape in parent after birth.The flexion posture of the fetus shape is also Referred to as position posture, which is the posture for making back bend into C-shaped in side view as shown in Figure 1A, additionally for It has been subjected to the prostrate of appropriate safe handling for such as making baby be located at the unshowned cushion (cutout cushion) cut out Posture.Then, it is appropriately performed position change and arrives back floating position etc., but their plenty of time is spent in appearance of lying on the back by them In gesture.In addition, low weight baby 101 is depended on, from the viewpoint of the stress for avoiding being not necessarily to, it may be desirable to ground can be using not Touch the design of the minimum treat of his/her body.In addition, the flat type disposable diaper 1 ' is used for the low weight baby.

Figure 1B shows the B-B arrow view of Figure 1A, and here, in the positioning posture, low weight baby 101, which is in, makes him / she knee is close and the state that makes his/her leg separated with M word simultaneously almost in contact with his/her abdomen area. Thus, the fixing belt 11 ' for engaging the object tape 15 ' in veutro portion 1a ' is pushed to by knee and thigh from the side leg-openings HL ' The waistline opening side HB '.Further, since baby spends in the his/her plenty of time in positioning posture, lifting force F continues Act on the long time.Thus, as shown in the schematic side elevation of Fig. 1 C, band 11 ' from the side leg-openings HL ' towards waistline be open HB Side is gradually removed (see the point region in Fig. 1 C), and is eventually disengaged from.In addition, fixing belt 11 ' should be again in the case where having disengaged from Secondary engagement, but in this case, choice is not left, low weight baby 101 can only be touched, this has violated minimum place Reason.

In addition, as described above, positioning posture in, baby be in side view be in C-shaped front lying position, however, In this posture, since back bow becomes, Figure 1A is such, and meeting generate clearance G between back and the drosal part 1b ' of diaper 1 '. Then, diaper 1 ' should be worn again in a manner of reducing clearance G, as a result similar with above situation, not left more than selection Ground can only touch low weight baby 101, this has violated minimum treat (minimum handling).

The present invention is made that in view of above-mentioned traditional problem, and the present invention relates to a kind of weight in 3000g under-weight below Flat type disposable diaper for baby, and it is in close contact the drosal part of diaper and back, and inhibit to connect with veutro portion simultaneously The fixing belt of conjunction is removed and is detached from from veutro portion.

The solution to the problem

To achieve the goals above, an aspect of of the present present invention is

In the flat type disposable diaper of 3000g low weight baby below, the diaper includes: veutro for a kind of weight Portion, the veutro portion the low weight baby veutro along landscape configuration；Crotch, the crotch are configured at the under-weight The crotch of baby；And drosal part, the drosal part the low weight baby back side along landscape configuration, the veutro Portion, the crotch and the drosal part with arranged on the longitudinal direction of the quadrature transverse, the drosal part have the transverse direction on Each end, each end be configured to via the fixing belt for being respectively arranged at each end joint portion and the veutro Portion's engagement is open with forming a waistline opening and a pair of leg circumference, and the diaper includes:

Calf circumference elastic component, the position edge of two sides of the calf circumference elastic component in the transverse direction of the crotch It is described longitudinally disposed, the calf circumference elastic component is constructed such that the leg-openings along the longitudinal contraction；And

Waistline elastic piece, the waistline elastic piece are set as extending to the two sides in the transverse direction, institute in the drosal part Stating waistline elastic piece is constructed such that the waistline opening along the cross-direction shrinkage, wherein

Under the diaper unfolded state,

In the cross direction, each end in the transverse direction of the waistline elastic piece is located at and the immediate calf circumference The identical position in position of the end of the longitudinal back side of elastic component or the lateral outer side positioned at the end of the back side；And And on the longitudinal direction, the waistline elastic piece is configured to along the described vertical of the joint portion longitudinally across the fixing belt Upward central location.

Referring to attached drawing, other features of the invention will be made apparent by this specification.

The effect of invention

The present invention relates to a kind of weight in the flat type disposable diaper of 3000g low weight baby below, can be with The drosal part and back for making diaper are in close contact, and the fixing belt engaged with veutro portion is inhibited to remove and take off from veutro portion simultaneously From.

Detailed description of the invention

Figure 1A is the schematic side elevation for showing low weight baby 101 and being in positioning posture, and Figure 1B is for illustration B-B arrow view and Fig. 1 C are to show to remove fixing belt by lifting force F in Figure 1A of the lifting force F of fixing belt 11 ' The schematic side elevation of 11 ' state.

Fig. 2 is the schematic plan view for showing the disposable diaper 1 in unfolded state according to the present embodiment.

Fig. 3 A, Fig. 3 B and Fig. 3 C are Section A-A figure, section B-B figure and C-C sectional view in Fig. 2 respectively.

Fig. 4 is the schematic perspective view for showing disposable diaper 1 when worn.

Fig. 5 is another improved figure for illustrating to make disposable diaper 1 according to the present embodiment, and is to show Source is in the schematic plan view of the diaper of unfolded state.

Fig. 6 is that the bonding station engaged with object tape 15 in fixing belt 11,11 is in from the two sides in transverse direction and clips absorption The low rigid portion of body 3 divides the explanatory diagram in the case where the position of 3na.

Fig. 7 is for illustrating to be included in contraction live part 31a and inactive portion 31n in waistline elastic piece 31 Figure.

Fig. 8 is explanatory diagram in the case where engagement in the state of overlapping each other in fixing belt 11,11.

Fig. 9 is the figure for illustrating the method for the engaging force (N/10mm) for measuring fixing belt 11.

Specific embodiment

At least following item will become obvious from the specification and drawings.

Under the diaper unfolded state,

According to the flat type disposable diaper, horizontally, each end in the transverse direction of waistline elastic piece be located at The identical position in position of the end of the longitudinal back side of immediate calf circumference elastic component or the cross positioned at the end of back side Outward.Thus, end is difficult to be influenced by the power generated in calf circumference elastic component, it is thus possible to make the end of waistline elastic piece The convergent force in portion itself acts rapidly on fixing belt as the drawing force in transverse direction.The shearing force in transverse direction is added as a result, Joint portion into fixing belt, thus joint portion can be engaged with high bonding force with veutro portion, as a result can be effectively inhibited solid Fixed band removing and disengaging.

In addition, waistline elastic piece is configured to along longitudinal direction across the longitudinal central location in the joint portion of fixing belt, Thus above-mentioned convergent force can be transferred to fixing belt with the substantially uniform distribution of less offset in the longitudinal direction, and this has been additionally aided Effect ground inhibits above-mentioned removing and disengaging.

In addition, the waistline elastic piece has sheet form, thus compared with the case where using the elastic component of strip, drawing force Fixing belt can be acted on the substantially uniform distribution of less offset in the longitudinal direction, and this additionally aids and inhibits above-mentioned removing and take off From.

Furthermore, it is possible in positioning posture low weight baby bow at C-shaped back and diaper drosal part it Between convergent force of the gap based on waistline elastic piece that generates and reduce.Thus the drosal part of diaper can be with the back of low weight baby Portion is in close contact.

In the flat type disposable diaper, it is desirable to which the end of the waistline elastic piece is in the end The transverse direction on outer end and be connected to the immediate fixing belt.

According to the flat type disposable diaper, outer end of the waistline elastic piece in the transverse direction in end is connected to fixation Band.Thus, the convergent force of end can quickly and reliably act on fixing belt.

In the flat type disposable diaper, it is desirable to

The direction all orthogonal with the described longitudinal and described transverse direction along in unfolded state the diaper thickness direction,

The diaper includes: in the veutro portion, the crotch and the drosal part along the absorption longitudinally extended Body；And the leakage prevention sheet of the absorber is covered from the non-skin side on the thickness direction, and

When from the thickness direction, the waistline elastic piece and both the absorber and the leakage prevention sheet weight Folded, each end in the transverse direction of the waistline elastic piece is located at the cross with both the absorber and the leakage prevention sheet The identical position in the position of upward ora terminalis or lateral outer side positioned at the ora terminalis.

In the flat type disposable diaper, each end in the transverse direction of waistline elastic piece is located at and absorber and leakage prevention sheet The identical position in the position of ora terminalis in the transverse direction of the two or the lateral outer side positioned at ora terminalis.Thus, in order to wear diaper, when solid When determining band and being transversely stretched, end can be in the case where not receiving on the whole drag from absorber and leakage prevention sheet freely Elongation.The convergent force generated in end as a result, can act rapidly on fixing belt.

In the flat type disposable diaper, it is desirable to

The absorber includes back side low rigid portion corresponding with the position of the drosal part point, the back side low rigid portion Dividing has the rigidity lower than the rigidity of peripheral part, and

When from the thickness direction, the back side low rigid portion point is Chong Die with the waistline elastic piece.

According to the flat type disposable diaper, back side low rigid portion point is Chong Die with waistline elastic piece.Thus, when diaper is worn When fixing belt is transversely stretched, at least back side low rigid portion in absorber point is transversely promptly shunk, and is carried on the back Side low rigid portion point does not cause strong resistance.Waistline elastic piece can be extended as a result, with small drawing force.As a result, can be easily Convergent force is generated in waistline elastic piece.

In addition, back side low rigid portion partial volume is easily shunk in the transverse direction.Thus, when worn, back side low rigid portion point passes through The convergent force of waistline elastic piece is promptly shunk.Thus, it is possible in the bow in the low weight baby for positioning posture at C-shaped The gap generated between back and the drosal part of diaper is reduced rapidly based on the contraction that back side low rigid portion is divided.

In the flat type disposable diaper, it is desirable to

The veutro portion include be configured to it is every in the joint portion of the fixing belt of each end of the drosal part The target area of one engagement,

The absorber includes veutro low rigid portion corresponding with the position of the veutro portion point, the veutro low rigid portion Dividing has the rigidity lower than the rigidity of peripheral part, and

When from the thickness direction, the veutro low rigid portion point is Chong Die with the target area.

According to the flat type disposable diaper, the bonding station that the joint portion with target area of fixing belt engage when wearing In the case where position to clip veutro low rigid portion point from the two sides in transverse direction, veutro low rigid portion point is easily based on waistline The convergent force of elastic piece and expand.Then, joint portion is transversely slightly moved in association with operation is expanded, and thus joint portion can To cooperate with target area and certainly be engaged in target area, this can make the engagement between joint portion and target area more firm Gu.

In the flat type disposable diaper, it is desirable to

The joint portion of the fixing belt is with following shape: the shape has the side for the inside being located in the transverse direction,

The calf circumference elastic component is that have along longitudinal a pair of of long side and along described lateral a pair of short edges Band-like elastic piece, and

A part of the waistline elastic piece is located in quadrilateral area, is located at back side using in the pair of short side The side of short side and the inside in the transverse direction at the joint portion of the fixing belt marks off the quadrilateral area, the short side and The side is relative edge.

According to the flat type disposable diaper, a part of waistline elastic piece is located in above-mentioned quadrilateral area.In addition, four Side shape region is the transmission path that power can be transmitted from calf circumference elastic component to the joint portion of fixing belt.Thus, even if from leg In the case where enclosing the power that joint portion is pulled to downwards leg-openings side by elastic component transmitting, which passes through above-mentioned waistline elastic piece A part is reduced and is passed to joint portion, and thus, it is possible to effectively inhibit fixing belt to remove due to the power.

In the flat type disposable diaper,

The waistline elastic piece includes: live part, and the live part is constructed such that the waistline opening along described Cross-direction shrinkage；And inactive portion, the inactive portion are configured to not make the waistline opening along the cross-direction shrinkage, and

The inactive portion be located at each end in the transverse direction of the waistline elastic piece and be located at the fixing belt and Between the live part.

According to the flat type disposable diaper, inactive portion is between fixing belt and live part.Thus, when transversely When stretching fixing belt, inactive portion is easier to extend.The contractility generated subsequently, based on the elongation can be used as in transverse direction Drawing force and act rapidly on fixing belt.Thus, the joint portion of fixing belt can be connect with engaging force appropriate with veutro portion It closes.

In the flat type disposable diaper,

The fixing belt of one end in each end is first band, the fixing belt of the other end is the second band, described The joint portion of first band engaged with the veutro portion and the joint portion of second band in an overlapping manner with the first band In the case where the surface engagement of disengaged portion side, the surface of the disengaged portion side at the joint portion and first band of second band Between engaging force be 0.1N/10mm or more, between the joint portion of the first band and the veutro portion is single with N/10mm The engaging force difference as unit of N/10mm between the engaging force of position and the joint portion and the veutro portion of second band It is set to be greater than between the surface of the disengaged portion side of the first band and the joint portion of second band and is with N/10mm The engaging force of unit, and

Engaged with the surface of the disengaged portion side of the first band in an overlapping manner at the joint portion of second band and The longitudinal central location of the first band and the longitudinal central location of second band are aligned to that Under this unanimous circumstances, the first band and second band are set as follows: the joint portion of second band is from institute It states first band and extends out to the longitudinal two sides.

According to the flat type disposable diaper, engaged on the surface of the disengaged portion side at the joint portion and first band of the second band In the case where engaging force be 0.1 (N/10mm) or more.Thus, in the form that fixing belt overlaps each other (hereinafter, being also known as " fixing belt reduplicative forms ") in, first band and the second band can be engaged reliably with veutro portion.That is, first band connects Conjunction portion can be engaged with veutro portion, and the joint portion of the second band can reliably be engaged with the surface of the disengaged portion side of first band.

In addition, first band and the second band can be close in the transverse direction of veutro portion in the case where " fixing belt reduplicative forms " Center portion, these first bands and the second band can be kept away from the leg of low weight baby.As a result, being applied from the leg of M shape The above-mentioned lifting force for being added to first band and the second band reduces, and thus inhibits first band and the second band removing and is detached from.

In addition, the engagement state of the second band as a whole can be reinforced according to above-mentioned construction, and can make simultaneously in solid Fixed the second band with reduplicative forms is easy to be detached from from first band.Details is as follows.

Firstly, as described above, the engaging force (N/10mm) between the male member of first band and veutro portion is made to be greater than first Engaging force (N/10mm) between the surface of disengaged portion side and the joint portion of the second band of band.Thus, pass through guarantor in the second band It holds in the case that the band is detached from from first band, first band can be effectively prevented and be also detached from together from veutro portion, thus only second Band can be detached from stable first band from first band.Thus, it becomes able to easily be detached from the second band from first band, this has Effect ground facilitates above-mentioned minimum treat.

On the other hand, it in fixing belt reduplicative forms, is connect as described above, the joint portion of the second band is engaged in the non-of first band The surface of conjunction portion side, while the joint portion of the second band has the shape extended from first band to longitudinal two sides.In addition, from The part that first band is extended is engaged with veutro portion, and the engaging force (N/10mm) engaged here with veutro portion is set to be greater than and the The engaging force (N/10mm) of the surface engagement of the disengaged portion side of one band.Thus, the engaging force at the joint portion of the second band can mention High amount corresponding with the part that this extends.

===present embodiment===

Fig. 2 is the schematic plan view for showing the disposable diaper 1 in unfolded state according to the present embodiment.This Outside, Fig. 3 A, Fig. 3 B and Fig. 3 C are Section A-A figure, section B-B figure and the C-C sectional view in Fig. 2 respectively.In addition, Fig. 4 is to show The schematic perspective view of disposable diaper 1 when worn.

Diaper 1 is used exclusively for weight in the diaper of 3000g low weight baby below, and is using fixing belt 11 by low The deploying type diaper 1 that birth weight babies 101 are worn.Then, the diaper 1 for being in unfolded state as shown in Figure 2, which has, to be used as each other just Hand over three directions longitudinally, laterally and thickness direction.Here, relative to longitudinal direction, including be arranged in order veutro portion 1a, crotch 1m and drosal part 1b, under the wearing effect of Fig. 4, veutro portion 1a covers the veutro of low weight baby 101, and crotch 1m covers baby 101 crotch, drosal part 1b cover the back side of baby 101.

Note that in the unfolded state of Fig. 2, veutro portion 1a and drosal part 1b two pleurapophysis from crotch 1m horizontally respectively Out.Then, outer shape of the diaper 1 when from thickness direction is general hourglass shape in the plan view.Hereinafter, veutro portion Two sides part 1asf, 1asf outstanding horizontally of 1a is also known as " veutro fin 1asf ", drosal part 1b in transverse direction On two sides part 1bsf, 1bsf outstanding be also known as " dorsal fin 1bsf ".Note that dorsal fin 1bsf with according to scheme " each end in transverse direction " it is corresponding.In addition, hereinafter, the side side on thickness direction is also known as " skin side ", another party side It is also known as " non-skin side ".In in this respect, the schematic plan in Fig. 2 is illustrated when from skin side in expansion The diaper 1 of state.

Here, as shown in Fig. 2, fixing belt 11 is configured to the top in the outside respectively in the transverse direction of each dorsal fin 1bsf End transversely protrudes.Then, fixing belt 11 engages (Fig. 2, figure with the object tape 15 for the non-skin side that veutro portion 1a is arranged in 3A), thus as shown in figure 4, foring waistline opening HB and a pair of leg circumference opening HL, HL, diaper 1 is worn by low weight baby 101 .

Diaper 1 includes: absorber 3, for the substantially elongate shape of the discharged liquid of absorption urine etc.；Liquid permeability is just Dough sheet 2 covers absorber 3 from skin side；Liquid impermeability leakage prevention sheet 4 covers absorber 3 from non-skin side；Exterior Piece 5 is the general hourglass shape for the outer shape for covering leakage prevention sheet 4 from non-skin side and forming diaper 1；A pair of of solid rivel Piece 6,6, is arranged side by side in couples in the transverse direction of positive dough sheet 2, and is respectively formed three-dimensional rivel portion 6g, 6g, as absorber 3 Transverse direction on each end leakage preventing wall.

As shown in Fig. 3 A to Fig. 3 C, absorber 3 includes absorbent core 3c and the substantially entire periphery for covering absorbent core 3c The core wrap sheet 3rs in face.Absorbent core 3c is by by the liquidabsorbing fibres of pulp fibers etc. and such as super-absorbent Property polymer (below be also known as SAP) etc. liquid-absorbent shot-like particle be formed as the exemplary plan view of predetermined shape In general hourglass shape and obtain.The liquid permeability piece of tissue paper, non-woven fabrics etc. is used for core wrap sheet 3rs.This It outside, does not include that part 3cna, 3cnb of structural material of absorbent core 3c of pulp fibers etc. is set respectively with predetermined shape It sets at the longitudinal both ends of absorbent core 3c, this will be described later.

Positive dough sheet 2 is made up of air of the non-woven fabrics of (air through) non-woven fabrics etc., and such as Fig. 2 and Fig. 3 A To shown in Fig. 3 C, there is the planar dimension extended from the two sides on the longitudinal two sides of absorber 3 and transverse direction.In addition, anti- Dropping fraction 4 also has the flat shape extended from the two sides on the longitudinal two sides of absorber and transverse direction and by such as polyethylene The resin film of film etc. is made.Then, from the part that the vertical and horizontal of absorber 3 extend, these pieces 2,4 pass through viscous Connect, welding etc. is bonded together, thus absorber 3 is maintained between piece 2 and 4.

As shown in Fig. 2, outer load 5 is made of non-woven fabrics appropriate etc., and form the outer shape of diaper 1.Then, on State piece 2,4 and the absorber 3 that is maintained between piece 2,4 be stacked in such a way that its central location horizontally is in alignment with each other it is outer The skin side of load 5, and (Fig. 3 A to Fig. 3 C) is integrated with each other by bonding, welding etc..Note that in the integration state, Absorber 3 extends (Fig. 2) throughout veutro portion 1a, crotch 1m and drosal part 1b.

Three-dimensional rivel piece 6,6 be arranged in pairs into it is corresponding with each end 2e, 2e in the transverse direction of positive dough sheet 2, thus respectively Each end 2e, 2e are covered from skin side.Then, piece 6,6 respectively along be longitudinally formed from the skin side surface of positive dough sheet erect Three-dimensional rivel portion 6g, 6g.That is, passing through bonding in the longitudinal direction along longitudinal multiple rubber covered wire 6r, 6r with elongation state Etc. the ora terminalis of the inside in the transverse direction for being fixed on three-dimensional rivel piece 6, and piece 6 is with the outside in the transverse direction for the ora terminalis being located on the inside of this Predetermined position P6g be fixed on positive dough sheet 2 as fixed position.Then, when the elongation state mitigation of rubber covered wire 6r, three-dimensional pleat The ora terminalis of the inside of pleat piece 6 and neighbouring part are longitudinally-contracted by the convergent force of rubber covered wire 6r, therefore the end of inside Edge and neighbouring part are set P6g using above-mentioned fixed bit and are promptly erected as set-up positions from the skin side surface of positive dough sheet 2, Three-dimensional rivel portion 6g is consequently formed.

Note that outside of the three-dimensional rivel piece 6 in transverse direction extends to and outer load 5 as shown in Fig. 2 and Fig. 3 A to Fig. 3 C The roughly the same position of the ora terminalis in outside, and the position at the ora terminalis or near the ora terminalis passes through bonding or welding and outer load 5 integrations.Three-dimensional rivel piece 6 and 5 coordination with one another of outer load as a result, to form veutro in veutro portion 1a and drosal part 1b respectively Fin 1asf, 1asf and dorsal fin 1bsf, 1bsf.On the other hand, in crotch 1m, similarly, three-dimensional rivel piece 6 and exterior Position of the piece 5 at or near ora terminalis is by bonding or welding integrated, thus from the pre- of the inside on the ora terminalis to transverse direction Determine range and forms leg fin 1mf, 1mf.

Leg fin 1mf, 1mf are that will become the part of leg-openings HL under wearing effect, that is, cover and enclose respectively Around the part of the leg of low weight baby 101.Then, in leg fin 1mf, distinguish along the strip-like resilient piece 21 of longitudinal straight line Using along longitudinal direction elongation state, by bonding etc. be fixed to as calf circumference elastic component 21 leg fin 1mf, to make leg fin 1mf is longitudinally-contracted, to form leg gather pleat portion.Thus, when the elongation state of calf circumference elastic component 21 mitigates, leg fin 1mf It is longitudinally-contracted with formed will be for multiple rivel portions in leg gather pleat portion.

Incidentally, in the present embodiment, as shown in Figure 3B, calf circumference elastic component 21 is inserted in outer load 5 and three-dimensional pleat Between pleat piece 6, but not limited to this.For example, the component can be adhered to the non-skin side surface of outer load 5, or can be bonded To the skin side surface of three-dimensional rivel piece 6.

In addition, in the present embodiment, the strip-like resilient piece 21 is by flexible nonwoven fabrics (including polyurethane fiber etc. Elastomeric fibre and based on the elasticity of its own and with retractility non-woven fabrics) be made, but not limited to this.Namely It says, it, then can be with as long as the piece has retractility based on its own elasticity in the case where relying on rubber covered wire, flat rubber etc. Use other kinds of.It is, for example, possible to use retractility films (to have retractility including elastomer and based on the elasticity of itself Film).

As shown in fig. 2 and fig. 3 a, fixing belt 11,11 is respectively arranged in the transverse direction of a pair of of dorsal fin 1bsf, 1bsf Top end part.Fixing belt 11 use respectively horizontally long shape made of non-woven fabrics band-like as band substrate 11a, each band substrate One end in the transverse direction of 11a is fixed to the top end part of dorsal fin 1bsf, and the other end is to the top end part of dorsal fin 1bsf Transverse direction on outside it is prominent.

Then, the skin side surface fixed to the protrusion (corresponding with joint portion) the male member 11m of hook-and-loop, Furthermore multiple joint protrusion (not shown) are set to the skin side surface of male member 11m.Thus, the joint protrusion of male member 11m The non-skin side surface for arriving object tape 15 is hooked, engages fixing belt 11 with object tape 15.Known hook-and-loop can To be applied to male member 11m, such as the hook-and-loop that joint protrusion is fish hook shape, T-shaped etc. can be suitably used.

As shown in fig. 2 and fig. 3 a, object tape 15 (corresponding with target area) is set to the non-skin side surface of outer load 5, The non-skin side surface of the outer load 5 is the non-skin side surface of veutro portion 1a.In the present embodiment, band 15 is horizontally long square Shape shape, then object tape 15 is fixed on outer load 5 by bonding or welding as follows: the object tape 15 and described outer Central location in the transverse direction of load 5 is in alignment with each other.In addition, in the present embodiment, in order to increase relative to fixing belt 11 Engaging force has 25 (g/m²) more than base weight the air in horizontally long rectangular shape by non-woven fabrics be used for object tape 15.By This, it is ensured that is for suitably engaging required engaging force.It is 0.1 that estimation engaging force for suitably engaging required, which may be exemplified, (g/10mm) more than.The method etc. that description is used to measure the engaging force later.

Incidentally, the material of object tape 15 is not limited to above-mentioned air and passes through non-woven fabrics.As long as that is, can be solid Determine to ensure engaging force as described above between band 11 and male member 11m, the nothing other than above-mentioned spun-bonded non-woven fabrics can be used Woven fabric, or female component of such as ring material of known hook-and-loop can be used in the case where not using non-woven fabrics. In addition, outer load 5 is used as object tape, and it is possible thereby to omits dedicated object tape 15 when outer load 5 is non-woven fabrics.

Then, when the diaper 1 is worn by low weight baby, in the two sides using a pair of of fixing belt 11,11 in transverse direction While stretching diaper 1, this engages fixing belt 11,11 with object tape 15.Incidentally, in the present embodiment, band substrate 11a is also transversely projected into the outside of male member 11m, these protrusions 11ap is used as when fixing belt 11 is stretched to two sides The maintaining part 11ap being kept.

The basic structure of diaper 1 is described above, in the present embodiment, has made premise of several improvement to solve To the problem of (inhibit fixing belt 11 removing and be detached from and make drosal part 1b and back be in close contact these problems).Hereinafter, by right This is described.

Fig. 5 is that the improved explanatory diagram and signal in unfolded state identical with the unfolded state in such as Fig. 2 are mild-natured Face figure.First improves the elastic component 31 for being related to for retractility being provided to waistline opening HB.That is, although not mentioning above It and in this example, is that the band-like elastic piece 31 of horizontally long rectangular shape is (following in order to assign retractility to waistline opening HB It is also known as waistline elastic piece 31) it is arranged in drosal part 1b, this makees part corresponding with waistline opening HB not in external force It is laterally shunk in drosal part 1b under natural conditions.More specifically, the two sides of the elastic piece 31 horizontally extend, and The piece 31 is fixed on the thickness direction of piece 31 and skin side and non-in the state of laterally elongated by bonding or welding The adjacent component 2,3,4,5 and 6 in skin side.Thus, if elongation state relaxation to enter nature, is fixed to elastic piece 31 part is mainly laterally shunk in drosal part 1b, to form multiple rivel portions.Therefore, elastic piece 31 can be transversely fast It extends fastly, until the rivel portion extends in tension, such waistline opening HB is in the state for being endowed retractility.

Note that fixed component is according on horizontal and vertical with elastic piece 31 as referring to understanding Fig. 5 and Fig. 3 A It is each position, adjacent with non-skin side and skin side to change in upper member 2,3,4,5 and 6 in through-thickness.For example, as schemed Shown in 3A, the non-skin side of leakage prevention sheet 4 in a thickness direction is present in the central location side in transverse direction, thus at this location, Piece 31 is fixed to leakage prevention sheet 4.However, since leakage prevention sheet 4 does not exist in the position of each end side horizontally, elastic piece 31 Fixed to outer load 5.In addition, as shown in Fig. 5 and Fig. 3 A, since absorber 3 is present in the position of skin side in a thickness direction In the center side in transverse direction and positioned at the position of longitudinal center side, therefore piece 31 is fixed on absorber 3 at this location.So And at the position there is no absorber 3, piece 31 is fixed to positive dough sheet, furthermore in even being located at laterally there is no positive dough sheet 2 On each end side position at, piece 31 is fixed to three-dimensional rivel piece 6.

Then, in the present embodiment, in the diaper 1 in unfolded state as shown in Figure 5, elastic piece 31 is to transverse direction On two sides extend, each end 31e1 until as little as close to the position of fixing belt 11,11, thus in the transverse direction of elastic piece 31, 31e1 is located at relative to laterally with the longitudinal back side in calf circumference elastic component 21 closest to end 21e2,21e2 phase Same position or the outside in the transverse direction closest to end 21e2,21e2.

Thus, each end 31e1,31e1 are influenced by the power generated in calf circumference elastic component 21 is less, therefore waistline Each end 31e1,31e1 of elastic piece 31 may be such that the convergent force of their own transversely promptly acts on as drawing force respectively In immediate fixing belt 11,11.Shearing force horizontally is added to the case where male member 11m of restraint zone 11 as a result, Under, male member 11m can be made to engage with high bonding force with the object tape 15 of veutro portion 1a, as a result can effectively inhibit fixing belt 11 removings and disengaging.

Incidentally, " unfolded state " indicates the shape that fixing belt 11,11 is not engaged with object tape 15 as shown in Figure 5 here State；Veutro portion 1a, crotch 1m and drosal part 1b are in state arranged side by side along longitudinal direction；And diaper 1 longitudinally and laterally on stretch It is long, until the contraction of part corresponding with the waistline opening HB based on waistline elastomer 31 and based on a pair of leg circumference elastic component 21, the contraction of 21 a pair of of leg fin 1mf, 1mf disappear.

In addition, waistline elastic piece 31 is arranged to the public structure across fixing belt 11 in the longitudinal direction under unfolded state in Fig. 5 The longitudinal central location C11m of part 11m.Specifically, all positions of elastic piece 31 in its transverse direction include connection one solid Determine the central location of the longitudinal central location C11m of the male member 11m of band 11 and the male member 11m of another fixing belt 11 The line segment LNC11m of C11m.Thus, elastic piece 31 can be with the substantially uniform distribution of less offset in the longitudinal direction by above-mentioned contraction Power is transferred to fixing belt 11,11, this also contributes effectively to inhibit above-mentioned removing and disengaging.

Incidentally, inventor has confirmed that, in order to improve the effect, should make male member 11m and elastic piece 31 it Between in the longitudinal direction overlapping ratio (by by the longitudinal greatest measurement L11m of male member 11m remove male member 11m and elasticity Lap LOL (mm) between piece 31 in the longitudinal direction and obtain percent value) be 70% or more.

In addition, waistline elastic piece 31 is the elastic membrane comprising elastomer resin appropriate, thus piece 31 itself has elasticity. Therefore, compared with the case where using multiple rubber covered wires or flat rubber, drawing force can be with the substantially equal of less offset in the longitudinal direction Equal distribution acts on fixing belt 11, this also contributes effectively to inhibit above-mentioned removing and disengaging.

Furthermore, it is possible to the clearance G generated in the positioning posture shown in Figure 1B, that is, can be in low weight baby 101 Convergent force of the bow at the clearance G generated between the back of C-shaped and the drosal part 1b of diaper 1 also based on elastic piece 31 and subtract It is small.Thus, the drosal part 1b of diaper 1 can be in close contact with the back of low weight baby 101.

The first improvement is described above, which is necessary in diaper 1 according to the present invention.Another party Face will be described below improvement and be not required, but utilize these improvement, can more effectively solve problem above.Thus, In diaper 1 according to the present embodiment, following improvement can also be set.

Firstly, in the present embodiment, as shown in figure 5, each end 31e1 in the transverse direction of waistline elastic piece 31 exists respectively Outer end 31e1e in the transverse direction of end 31e1 is connected to nearest fixing belt 11.

Thus, the convergent force of end 31e1 can quickly and reliably act on fixing belt 11.Then, this also effectively has Help inhibit above-mentioned removing and disengaging.

In addition, in this example, as shown in figure 5, waistline elastic piece 31 is arranged to when from thickness direction and absorbs The overlapping of both body 3 and leakage prevention sheet 4.In this case, each end 31e1,31e1 in the transverse direction of waistline elastic piece 31 be located at The position identical with the position of ora terminalis in the transverse direction of both leakage prevention sheets 4 of absorber 3, or it is outer in the transverse direction of the ora terminalis Side.

Thus, for the diaper 1 that will be worn, when the two sides being stretched to fixing belt 11 in transverse direction, waistline elastic piece 31 at least each end 31e1,31e1 can be in the case where not receiving on the whole drag from absorber 3 and leakage prevention sheet 4 freely Ground extends.Thus the convergent force generated in the 31e1 of end is as in the transverse direction when engaging fixing belt 11 with object tape 15 Drawing force can act rapidly on fixing belt 11, therefore this can also contribute effectively to inhibit above-mentioned removing and disengaging.

In addition, in the present embodiment, as shown in figure 5, absorber 3 has low rigidity corresponding with the position of drosal part 1b Part 3nb (corresponding with back side low rigid portion point), which divides 3nb to have the rigidity lower than the rigidity of its peripheral part. That is, in the present embodiment, without the absorbent core 3c of pulp fibers, SAP etc. any materials in plane Space 3cnb triangular in shape is formed in the lateral center position of the end of the longitudinal back side of absorbent core 3c in figure, thus Above-mentioned low rigid portion divides 3nb to be formed in absorber 3.In addition, low rigid portion divides 3nb and waistline bullet when from thickness direction Property piece 31 be overlapped.

Thus, in the case where the two sides being stretched to fixing belt 11 when diaper 1 is worn in transverse direction, in absorber 3 In at least low rigid portion divide 3nb transversely promptly to shrink, which divides 3nb not act on for big resistance.As a result, Waistline elastic piece 31 can be extended with relatively small drawing force, and contraction as a result can be easily generated in waistline elastic piece 31 Power.

However, absorbent core 3c's divides the corresponding part 3cnb of 3nb to be not limited to above-mentioned space with low rigid portion.Namely It says, as long as space has the base weight (g/m smaller than the base weight of its peripheral part²), then said effect can be accordingly played, thus Certain structural materials of absorbent core 3c may include in above-mentioned part 3cnb.

In addition, in the present embodiment, as shown in figure 5, absorber 3 includes low rigidity corresponding with the position of veutro portion 1a Part 3na (corresponding with veutro low rigid portion point), which divides 3na to have the rigidity lower than the rigidity of its peripheral part. That is, in the present embodiment, there is the space of the shape trapezoidal in the plan view along lateral upper bottom and bottom 3cna is formed in the lateral center position of the end of the longitudinal veutro of absorbent core 3c, is thus formed in absorber 3 It states low rigid portion and divides 3na.In addition, low rigid portion divides 3na Chong Die with object tape 15 when from thickness direction.

Thus, as shown in fig. 6, male member 11m, 11m in the fixing belt 11,11 when diaper 1 is worn has been engaged in mesh The bonding station of marker tape 15 is to be easy to be based on waistline in the case where clipping the position that low rigid portion divides 3na from the two sides in transverse direction The convergent force of elastic piece 31 and make low rigid portion that 3na be divided to expand.Then, male member 11m is operated transversely slightly by the expansion Mobile, thus male member 11m can cooperate with object tape 15 and certainly engage with object tape 15, this makes in male member 11m Engagement between object tape 15 is stronger.

However, dividing the part 3cna of the corresponding absorbent core 3c of 3na to be not limited to above-mentioned space with low rigid portion.Namely It says, as long as space has the base weight (g/m smaller than the base weight of its peripheral part²), then said effect can be accordingly played, thus Certain structural materials of absorbent core 3c may include in above-mentioned part 3cna.

In addition, in the present embodiment, as shown in figure 5, substantially four sides in the plan view the male member 11m of fixing belt 11 Shape shape includes along longitudinal side 11ms at the position of inside so horizontally.On the other hand, due to calf circumference elasticity structure Part 21 is along longitudinally disposed band-like elastic piece 21, therefore the outer shape of calf circumference elastic component 21 has along longitudinal A pair of of long side 21s2,21s2 and along lateral a pair of short edges 21s1,21s1.In addition, a part of waistline elastic piece 31 is located at Quadrilateral area A11m21 (the point region in Fig. 5), the relative edge of quadrilateral area A11m21 be a pair of short edges 21s1, The side 11ms of the short side 21s1 positioned at back side in 21s1 and the inside in the transverse direction of the male member 11m positioned at fixing belt 11, should Quadrilateral area A11m21 is the transmission path for the male member 11m that power can be transferred to fixing belt 11 from calf circumference elastic component 21.

Thus, even if in the power that male member 11m is pulled to downwards to leg-openings HL side from the transmitting of calf circumference elastic component 21 In the case of, which reduces by the above-mentioned part of waistline elastic piece 31 and is passed to male member 11m, and thus, it is possible to effectively Fixing belt 11 is inhibited to be detached from due to the power.

In addition, in the present embodiment, as shown in fig. 7, waistline elastic piece 31 includes: live part 31a, the live part 31a shrinks in the transverse direction waistline opening HB；And inactive portion 31n, 31n, the inactive portion 31n, 31n do not make horizontally Waistline opening HB is shunk.In addition, inactive portion 31n, 31n be located at end 31e1 in the transverse direction of waistline elastic piece 31, 31e1, furthermore inactive portion 31n, 31n is located between immediate fixing belt 11 and live part 31a.In addition, invalid portion What point 31n, 31n were not acted in external force is approximately natural length state under natural conditions.

Thus, when transversely stretching fixing belt 11, inactive portion 31n relatively easily and quickly extends.Subsequently, based on The elongation and drawing force that the contractility generated can be used as in transverse direction acts on rapidly fixing belt 11.Thus, fixing belt 11 Male member 11m can be engaged with engaging force appropriate with object tape 15.

In addition, in the present embodiment, as shown in figure 8, be structured to can be with " fixing belt for a pair of of fixing belt 11,11 Reduplicative forms " engagement.Thus, executed as needed with fixing belt reduplicative forms engage in the case where, fixing belt 11,11 can be with By when worn close to the part of the center side in the transverse direction of veutro portion 1a in a manner of engage, thus fixing belt 11,11 can be with It is kept away from the leg in M shape of low weight baby 101.It is above pushed away as a result, can reduce and be applied to the above-mentioned of fixing belt 11 from leg Power F (Figure 1B), thus, it is possible to inhibit fixing belt 11,11 to remove and be detached from.

Fixing belt reduplicative forms will be described, hereinafter, being located at the dorsal fin 1bsf in left side in fig. 8 first of all for succinct Fixing belt 11 be referred to as " left side band 11-1 " (corresponding with first band), similarly, the dorsal fin 1bsf positioned at right side consolidates Determine band 11 and is referred to as " right side band 11-2 " (corresponding with the second band).

Then, as shown in figure 8, the object tape 15 of the male member 11m and veutro portion 1a of skin side surface of the left side with 11-1 Engagement, and the male member 11m of skin side surface of the right side with the 11-2 non-skin side table with left side with 11-1 in an overlapping manner Face 11-1s engagement.That is, in fixing belt reduplicative forms, left side with 11-1 non-skin side surface 11-1s (with non- The surface of joint portion side is corresponding) it is used as the female component engaged with right side with the male member 11m of 11-2.Thus, in present embodiment In, non-skin side surface 11-1s of the left side with 11-1 is by having for example, 50 (g/m²) more than relatively large base weight nonwoven Cloth is made, so that the connecing between the non-skin side surface 11-1s with 11-1 in male member 11m of the right side with 11-2 and left side Resultant force is 0.1 (N/10mm) or more.Thus, male member 11m of the right side with 11-2 can with for engage required engaging force with Non- skin side surface 11-1s engagement of the left side with 11-1, is achieved in fixing belt reduplicative forms.

Here it is preferred that fixing belt reduplicative forms are implemented as follows.That is, it is preferable that in left side band 11-1 Male member 11m and object tape 15 between engaging force (N/10mm) and in male member 11m and object tape 15 of the right side with 11-2 Between engaging force (N/10mm) be respectively greater than in non-skin side surface 11-1s and right side public structure with 11-2 of the left side with 11-1 Engaging force (N/10mm) between part 11m, it is furthermore preferred that in non-skin side surface 11-1s of the left side with 11-1 to be overlapped Mode engaged and longitudinal central location C11-1 and right side band of the left side with 11-1 with right side with the male member 11m of 11-2 The longitudinal central location C11-2 of 11-2 be aligned to it is consistent with each other in the case where, left side band 11-1 and right side band 11-2 with the right side The mode that male member 11m of the side with 11-2 extends with the non-skin side surface 11-1s of 11-1 to longitudinal two sides from left side Setting.

For example, both left side band 11-1 and right side band 11-2 are identical shape, tool in the embodiment in fig. 8 Body, the tapering shape to narrow for longitudinal size towards the tip side in transverse direction.Thus, in left side band 11-1 and right side band 11-2 is engaged so that male member 11m of the right side with the 11-2 non-skin side surface 11-1s with left side with 11-1 in an overlapping manner Engagement and longitudinal central location C11-1, C11-2 be aligned to it is consistent with each other in the case where, male member of the right side with 11-2 The position P11-2n of base portion side of the right side of 11m horizontally with 11-2, extend from left side band 11-1 to longitudinal two sides.

It is formed into as above in this way by structure, it becomes able to reinforce engagement state of the right side with 11-2 as a whole, and The left side band 11-1 of fixing belt reduplicative forms can simultaneously be easily separated from from right side band 11-2.Details is as follows.

Firstly, as described above, in the present embodiment, between male member 11m and object tape 15 of the left side with 11-1 Engaging force (N/10mm) is set to be greater than the male member of non-skin side surface 11-1s and right side with 11-2 in left side with 11-1 Engaging force (N/10mm) between 11m.Thus, the side of the maintaining part 11ap of the top end part with 11-2 is kept with 11-2 on right side In the case that formula is detached from from left side with 11-1, left side band 11-1 can be effectively prevented and be also detached from together from object tape 15, thus Only right side is detached from stable left side band 11-1 from left side band 11-1 with 11-2.Thus, right side band 11-2 can easily from Left side band 11-1 is detached from, and is as a result become when being detached from fixing belt 11-1,11-2 in more changing babies' napkin not by big stress It is applied to low weight baby 101, this facilitates minimum treat.

In addition, as described above, male member 11m of the right side with 11-2 is on right side with 11-2's in fixing belt reduplicative forms The position P11-2n of base portion side in transverse direction, extend from left side band 11-1 to longitudinal two sides.In addition, from left side band 11-1 The part extended is engaged with the object tape 15 of veutro portion 1a.Here, the engaging force (N/10mm) engaged with object tape 15 is greater than The engaging force (N/10mm) engaged with left side with the non-skin side surface 11-1s of 11-1.Thus, male member of the right side with 11-2 Amount corresponding with the part that this extends that the engaging force of 11m is capable of increasing.

Incidentally, as follows for example used as the exemplary Automatic Drawing testing machine (autograph of cupping machine Testing machine) (being manufactured by Shimadzu Seisakusho Ltd.) execute the measurement of the engaging force (N/10mm).Fig. 9 is to show measurement The schematic side elevation of state.

Firstly, cutting out a part of the fixing belt 11 of diaper 1 to form band substrate 11a and public affairs material 11m and there is same form Rectangle sample 11s (hereinafter referred to as fixing belt sample 11s).In addition, cutting out a part of the object tape 15 of diaper 1 with shape At the sample 15s (hereinafter referred to as object tape sample 15s) of object tape 15, in this case, the size of object tape sample 15s The size being configured on the two directions in machine and transverse direction than fixing belt sample 11s is big.

The non-skin side surface of the male member 11m and object tape sample 15s of above-mentioned fixing belt sample 11s engage, thus shape At measurement sample 11s15s.However, in the engagement, fixing belt sample 11s is placed to the non-skin of object tape sample 15s It on side surface, and is aligned so that the transverse direction of sample is aligned in parallel with each other, fixing belt sample 11s is not from object tape sample The non-skin side surface of 15s is extended, later, unshowned weight be 700g roller in the transverse direction as peeling direction, with 5 (mm/min) velocity amplitude rolls, and the weight of roller itself is made to act on both sample 11s and 15s simultaneously.As a result, sample Both 11s and 15s are in predetermined engagement state.

On the other hand, as shown in figure 9, cupping machine include can be separated in vertical direction a pair of of head 81u, 81d.Specifically, a head 81u be can be along the moving-head 81u, another head 81d that vertical direction moves up and down The irremovable fixing head 81d being arranged to below moving-head 81u.In addition, fixing head 81d is on the upper surface of which 135 ° are tilted from vertical direction with flat inclined surface 81ds, surface 81ds.

Measurement is fixed to inclined surface 81ds with sample 11s15s.Note that in fixation of the measurement with sample 11s15s, Object tape sample 15s is contacted with the surface inclined surface 81ds, and thus fixing belt sample 11s is located on object tape sample 15s Side.In addition, the configuration is so that the transverse direction of sample 11s, 15s are parallel with the inclined direction of inclined surface 81ds.In addition, be formed as from Lower ora terminalis 11sde along longitudinal direction (through the direction of paper in Fig. 9), fixed with the one end of auxiliary piece 83 by the holding of size outstanding Lower ora terminalis 11sde on to the inclined direction of fixing belt sample 11s, holding is with the other end of auxiliary piece 83 by moving-head The handle part 81uc of 81u is held.

Then, moving-head 81u is moved up with the predetermined movement speed value of 300 (mm/min), and solid by being set to The unshowned load cell measurement for determining head 81d acts on the load value (N) of head 81d, thus makes head 81u and fixation Head 81d is separated.

In addition, fixing belt sample 11s is sequentially detached from from object tape sample 15s, in the load value then measured, record is worked as Angle, θ reaches load value P135 at 135 degree, and angle, θ is to be applied to fixation from moving-head 81u via holding auxiliary piece 83 Angle between the direction of peeling force Fh with sample 11s and the inclined direction of inclined surface 81ds.Then, when fixing belt sample 11s it is longitudinal having a size of 10mm when the load value P135 of record is converted into load value, and the load value quilt after the conversion Obtain is above-mentioned engaging force (N/10mm).For example, when fixing belt sample 11s it is longitudinal having a size of 20mm when, on making The value (=(P135/20mm) × 10mm) that the load value P135 for stating record is multiplied with 10mm divided by the obtained value of 20mm and is obtained is made For above-mentioned engaging force (N/10mm).

Note that clearly, engaging force in the case where fixing belt reduplicative forms, namely in non-flesh of the left side with 11-1 The measurement of engaging force (N/10mm) between the male member 11m of skin side surface 11-1s and right side with 11-2 can also be with above-mentioned feelings Condition similarly executes, thus will omit descriptions thereof.

Incidentally, described above is diapers 1 according to the present embodiment to be dedicated as weight in 3000g under-weight below Diaper for baby, it is contemplated that diaper 1 can efficiently solve and position posture and the associated above problem of minimum treat, this Diaper 1 in embodiment is also the case where further easily becoming positioning posture and furthermore needing further to minimum treat Under be effective.In addition, the case where situation further decreases for infant weight.

Thus it is preferred that the diaper 1 of present embodiment is less than 2500g for weight and is greater than or equal to the low of 1500g Birth weight infant, it is highly preferred that be less than 1500g for weight and be greater than or equal to the very low birth weight baby of 1000g, Even more preferably, the low birth weight baby of 1000g is less than for weight.

Further, since diaper 1 according to the present embodiment is dedicated as the diaper of low weight baby, therefore 1 shape of diaper It is small as the existing diaper 1 than newborn.For example, the waistline opening HB with product length and 304mm with 365mm is being worn The diaper of the newborn of perimeter L HB under state compare, the diaper 1 of present embodiment is long with 210 to 330mm product It spends L1 (Fig. 2) and 160 to 295mm waistline is open perimeter L HB of the HB under wearing effect.

Note that product length L1 is the longitudinal full-size L1 under above-mentioned unfolded state.In addition, in fixing belt 11-1,11-2 are under the engagement state of fixing belt reduplicative forms the above-mentioned perimeter L HB for measuring waistline opening HB.

Firstly, as shown in figure 8, male member 11m of the left side with 11-1 is engaged with the object tape 15 of veutro portion 1a, it is later, right Male member 11m of the side with 11-2 is engaged with left side with the non-skin side surface 11-1s of 11-1, at this point, in these bands 11-1,11-2 Longitudinal central location C11-1, C11-2 be in alignment with each other in the state of, be aligned so that top 11- of the right side with 11-2 The end 11me of base portion side of male member 11m of the 2e with left side with 11-1 is consistent.The joint shape of fixing belt reduplicative forms is generated as a result, State.

Subsequently, based on the morphogenetic waistline opening HB elongation of the joint shape, until the contraction based on waistline elastic piece 31 disappears It loses.Then, under the elongation state, the perimeter L HB of measurement waistline opening HB, thus to obtain perimeter L HB.

Incidentally, the perimeter L HB of product length L1 and waistline the opening HB of low birth weight baby are respectively 310mm And 273.5mm, very low birth weight baby product length L1 and waistline opening HB perimeter L HB be respectively 270mm and 220mm, in addition, the perimeter L HB of low birth weight product length L1 for baby and waistline opening HB be respectively 230mm and 219mm。

===other embodiments===

Embodiment according to the present invention is described above, embodiment of above is easy to understand the present invention, and is not used in Limit understanding of the invention.In addition, needless to say more, without departing from the spirit of the invention, the present invention can change and Modification, the present invention include its equivalent.For example, modification as described below is possible.

In the above-described embodiment, it is illustrated as calf circumference elastic component 21 along the strip-like resilient piece 21 of longitudinal straight line, The shape of strip-like resilient piece 21 is not limited to above-mentioned.It is gone for example, the piece can have with from back end to longitudinal inside And the curved shape of the medial displacement in transverse direction.

In the above-described embodiment, elastic membrane is illustrated as waistline elastic piece 31, but this is without being limited thereto.That is, As long as the piece 31 itself has elasticity, which can be the flat member other than elastic membrane, and can be for example flexible Property non-woven fabrics (elastomeric fibre including such as polyurethane fiber and based on the elasticity of its own and with retractility nonwoven Cloth)

The explanation of appended drawing reference

1 disposable diaper

1a veutro portion, 1asf side flap,

1b drosal part, 1bsf side flap (end),

1m crotch, 1mf leg fin,

2 positive dough sheets, the end 2e,

3 absorbers,

3na low rigid portion point (veutro low rigid portion point),

3nb low rigid portion point (back side low rigid portion point),

3c absorbent core, the space 3cna, the space 3cnb,

3rs core wrap sheet,

4 leakage prevention sheets,

6 three-dimensional rivel pieces, 6g solid rivel portion (leakage preventing wall), 6r rubber covered wire,

11 fixing belts,

11a band substrate, 11ap protrusion (maintaining part),

11m male member (joint portion), the end 11me, the side 11ms,

Band (first band) on the left of 11-1, the non-skin side surface 11-1s,

Band (the second band) on the right side of 11-2, the top 11-2e,

Ora terminalis under 11s fixing belt sample, 11sde, 11s15s sample,

15 object tapes, 15s object tape sample,

21 calf circumference elastic components, 21e1 back end, the end 21e2,

21s1 short side, 21s2 long side,

31 waistline elastic pieces, the end the 31e1 outer end 31e1e,

31a live part, 31n inactive portion,

81u moving-head, 81uc handle part, 81d fixing head, 81ds inclined surface

83 holding auxiliary pieces,

101 low weight babies,

HB waistline opening, HL leg-openings,

P6g fixation position,

A11m21 quadrilateral area,

The central location C11m, the central location C11-1, the central location C11-2,

P11-2n base portion side position, LNC11m line segment,

The gap G, F lifting force Fh peeling force

Claims

1. a kind of weight includes: veutro in the flat type disposable diaper of 3000g low weight baby below, the diaper Portion, the veutro portion the low weight baby veutro along landscape configuration；Crotch, the crotch are configured at the under-weight The crotch of baby；And drosal part, the drosal part the low weight baby back side along landscape configuration, the veutro Portion, the crotch and the drosal part with arranged on the longitudinal direction of the quadrature transverse, the drosal part have the transverse direction on Each end, each end be configured to via the fixing belt for being respectively arranged at each end joint portion and the veutro Portion's engagement is open with forming a waistline opening and a pair of leg circumference, and the diaper includes:

Calf circumference elastic component, the position of two sides of the calf circumference elastic component in the transverse direction of the crotch is along institute State longitudinally disposed, the calf circumference elastic component is constructed such that the leg-openings along the longitudinal contraction；And

Waistline elastic piece, the waistline elastic piece are set as extending to the two sides in the transverse direction, the waist in the drosal part Enclosing elastic piece is constructed such that the waistline opening along the cross-direction shrinkage, wherein

Under the diaper unfolded state,

In the cross direction, each end in the transverse direction of the waistline elastic piece is located at and the immediate calf circumference elasticity The identical position in position of the end of the longitudinal back side of component or the lateral outer side positioned at the end of the back side；And On the longitudinal direction, the waistline elastic piece is configured to along the longitudinal direction at the joint portion longitudinally across the fixing belt Central location,

The diaper includes in the veutro portion, the crotch and the drosal part along the absorber longitudinally extended,

The absorber includes back side low rigid portion corresponding with the position of the drosal part point, the back side low rigid portion point tool There is the rigidity lower than the rigidity of peripheral part, and

When from the thickness direction, the back side low rigid portion point is Chong Die with the waistline elastic piece,

The veutro portion includes each of the joint portion being configured to the fixing belt of each end of the drosal part The target area of engagement,

The absorber includes veutro low rigid portion corresponding with the position of the veutro portion point, the veutro low rigid portion point tool There is the rigidity lower than the rigidity of peripheral part, and

When from the thickness direction, the veutro low rigid portion point is Chong Die with the target area,

The veutro low rigid portion point is smaller than the back side low rigid portion point on the longitudinal direction.

2. weight according to claim 1 is in the flat type disposable diaper of 3000g low weight baby below, spy Sign is,

The end of the waistline elastic piece is the outer end in the transverse direction in the end and is connected to immediate The fixing belt.

3. weight according to claim 1 or 2 is in the flat type disposable diaper of 3000g low weight baby below, It is characterized in that,

The diaper includes the leakage prevention sheet that the absorber is covered from the non-skin side on the thickness direction, and

When from the thickness direction, the waistline elastic piece is Chong Die with both the absorber and the leakage prevention sheet, institute State each end in the transverse direction of waistline elastic piece be located at in the transverse direction of both the absorber and the leakage prevention sheet Ora terminalis the identical position in position or lateral outer side positioned at the ora terminalis.

4. weight according to claim 1 is in the flat type disposable diaper of 3000g low weight baby below, spy Sign is,

The calf circumference elastic component is that have along longitudinal a pair of of long side and along the band of described lateral a pair of short edges The elastic piece of shape, and

A part of the waistline elastic piece is located in quadrilateral area, utilizes the short side positioned at back side in the pair of short side The quadrilateral area is marked off with the side of the inside in the transverse direction at the joint portion for being located at the fixing belt, the short side and described While being relative edge.

5. weight according to claim 1 is in the flat type disposable diaper of 3000g low weight baby below, spy Sign is,

The waistline elastic piece includes: live part, and the live part is constructed such that the waistline opening along the transverse direction It shrinks；And inactive portion, the inactive portion are configured to not make the waistline opening along the cross-direction shrinkage, and

The inactive portion is located at each end in the transverse direction of the waistline elastic piece and is located at the fixing belt and described Between live part.

6. weight according to claim 1 is in the flat type disposable diaper of 3000g low weight baby below, spy Sign is,

The fixing belt of one end in each end is first band, the fixing belt of the other end is the second band, described first The joint portion of band is engaged with the veutro portion and the joint portion of second band connects with the non-of the first band in an overlapping manner In the case where the surface engagement of conjunction portion side, between the surface of the disengaged portion side at the joint portion and first band of second band Engaging force be 0.1N/10mm or more, between the joint portion of the first band and the veutro portion as unit of N/10mm The engaging force as unit of N/10mm between engaging force and the joint portion and the veutro portion of second band is set respectively It is fixed between the surface of disengaged portion side and the joint portion of second band that are greater than the first band as unit of N/10mm Engaging force, and

It is engaged in an overlapping manner with the surface of the disengaged portion side of the first band and described at the joint portion of second band The longitudinal central location of first band and the longitudinal central location of second band are aligned to each other one In the case where cause, the first band and second band are set as follows: the joint portion of second band is from described One band extends out to the longitudinal two sides.