CN104703566B

CN104703566B - The manufacture method of stretchable layer stack and device

Info

Publication number: CN104703566B
Application number: CN201380051274.7A
Authority: CN
Inventors: 牧村员利
Original assignee: Zuiko Corp
Current assignee: Zuiko Corp
Priority date: 2012-10-05
Filing date: 2013-09-30
Publication date: 2016-12-21
Anticipated expiration: 2033-09-30
Also published as: WO2014054565A1; JPWO2014054565A1; JP6180422B2; CN104703566A

Abstract

nullThe present invention provides the manufacture method of a kind of stretchable layer stack (W)，This stretchable layer stack (W) configures along crosscutting sheet material (S1 between the first sheet material (S1) and the second sheet material (S2)、Multiple elastic components (F) of the wire that the width (Y) in carrying direction (X) S2) extends，And this stretchable layer stack (W) is upper flexible at width (Y)，The manufacture method of described stretchable layer stack (W) includes following operation: make the surface with the face of the first sheet material (S1) opposite side and the centrally directed two ends of (Y) in the width direction and the roller that turns back (8) that diameter reduces of second sheet material (S2) of complex (W1) contact，While carrying complex (W1)，Middle body (Fc) along with elastic component (F) shrinks and makes the middle body (Wc) of complex (W1) in the upper contraction of width (Y)，So that turning back in the folding part (Sf) of the first sheet material (S1)，Overlapping with the edge, both sides (Se) of the second sheet material (S2).

Description

The manufacture method of stretchable layer stack and device

Technical field

The present invention relates to manufacture method and the device of stretchable layer stack.

Background technology

In disposable diaper, medicated underpants, use and make described diaper etc. and body in gusset, main part configuration stretchable layer stack Show consideration for the structure closed.As the manufacture method of such stretchable layer stack, known following method: utilize conveyer belt by zigzag shape Elastic component be sent between a pair band that held roller clamps, by this bullet along the direction that intersects, carrying direction with described band Property component is clipped between the pair of band and fixes (patent documentation 1).

It addition, after utilizing two sheet materials to clamp elastic component, cut off elastic component in the both sides of carrying mechanism, from removing Laminated sheet takes off in fortune mechanism, but in order to cover the end of the contraction of the elastic component after cut-out, need to be in advance by two sheet materials A sheet material edge, both sides fold, turn back after clamping.

Citation

Patent documentation

Patent documentation 1:JP63-243309A (the 7th figure)

Patent documentation 2:JP2001-518061A

However, it is very difficult to turn back in the edge, both sides of the sheet material after folding once.

Summary of the invention

Therefore, it is an object of the invention to provide the folding of the edge, both sides that can carry out the sheet material after folding once swimmingly The manufacture method of the stretchable layer stack returned and device.

The present invention relates to the manufacture method of a kind of stretchable layer stack, this stretchable layer stack the first sheet material and the second sheet material it Between configure multiple elastic components of wire that the width in the carrying direction along crosscutting described sheet material extends, and this flexible stacking Body is flexible on described width,

The manufacture method of described stretchable layer stack comprises the following steps:

The edge, both sides along described carrying direction of described first sheet material is folded and forms the operation of folding part, in this work In sequence, in the way of making described folding part not be clipped between described first sheet material and the second sheet material, fold described first sheet material；

Described elastic component is wound in the shape of a spiral with tensioned state the operation of two groups of conveyer belts；

Described bullet is clamped between the non-collapsible portion not carrying out described folding and described second sheet material of described first sheet material Property component, the middle body making the width of described two sheet materials and described elastic component is bonded to each other and forms complex Operation；

Described elastic component in described complex at the part that described first sheet material and the second sheet material stretch out Cut off the operation of described elastic component；And

While making the face of the same described first sheet material opposite side of described second sheet material of described complex and the roller that turns back Surface contacts while carrying described complex, and the middle body along with described elastic component shrinks and makes in described complex Centre part on described width shrink, thus by each folding part of described first sheet material with described second sheet material along institute State the operation that the overlapping mode of each side edge part in carrying direction is turned back, described in the roller that turns back have in the carrying side with described complex To the orthogonal upwardly extending axis in side, and have from two portions that diameter reduces towards two ends of the central authorities of described width Position.

On the other hand, the present invention relates to the manufacture device of a kind of stretchable layer stack, this stretchable layer stack the first sheet material with Multiple elastic components of the wire of the width extension in the carrying direction along crosscutting described sheet material are configured between second sheet material, and This stretchable layer stack is flexible on described width,

The manufacture device of described stretchable layer stack possesses:

Baffle plate, the edge, both sides along described carrying direction of its described first sheet material of folding, and so that having carried out this folding The folding part mode that is not clipped between described first sheet material and the second sheet material perform the folding of described first sheet material；

Two groups of conveyer belts, they are separated from each other on the described width of described elastic component；

Rotator, described elastic component is wound in described two groups of conveyer belts in the shape of a spiral by it with tensioned state；

A pair niproll, they are at the non-collapsible portion not carrying out described folding of described first sheet material and described second sheet material Between clamp described elastic component, make the middle body of the width of described two sheet materials and described elastic component mutually paste Close and form complex；

Sickle, stretching out from described first sheet material and the second sheet material of its described elastic component in described complex Part at cut off described elastic component；And

Turn back roller, and it has at the orthogonal upwardly extending axis in side in carrying direction with described complex, and have from The central authorities of described width two positions that diameter reduces towards two ends, and make described the second of described complex The face of same described first sheet material opposite side of sheet material contacts with the surface of the described roller that turns back while carrying described complex, adjoint The middle body described elastic component shrinks and makes the middle body of described complex shrink on described width, thus By each folding part of described first sheet material in the way of overlapping with each side edge part along described carrying direction of described second sheet material Turn back.

In the present invention, the roller that turns back has the central authorities included in the width direction two positions that diameter reduces towards two ends Surface, when complex contacts while being handled upside down with the described roller that turns back, along with the middle body of described elastic component Shrinking, the middle body of described complex shrinks on described width.Therefore, the folding part of described first sheet material with institute State and turn back and overlapping with the edge, both sides of described second sheet material on the direction in opposite direction that middle body shrinks.Therefore, it is possible to Turning back of the edge, both sides of the sheet material after folding swimmingly.

Accompanying drawing explanation

Fig. 1 is the brief perspective views manufacturing device illustrating the present invention.

Fig. 2 is the brief perspective views of the upstream portion illustrating this device.

Fig. 3 is a part i.e. side view of rotator of this device.

Fig. 4 is the brief perspective views of the downstream part of the carrier illustrating this device.

Fig. 5 is the schematic top of the upstream portion illustrating this device.

Layout when Fig. 6 is to observe this device from side.

Fig. 7 A and Fig. 7 B is the sectional view of the state illustrating stretchable layer stack and contacting with the roller that turns back.

Fig. 8 A, Fig. 8 B, Fig. 8 C and Fig. 8 D are the sectional views of the operation representing manufacture method respectively.

Fig. 9 A, Fig. 9 B, Fig. 9 C and Fig. 9 D are the sectional views of the operation representing manufacture method respectively.

Detailed description of the invention

In a preferred method, it is also equipped with the both side edges of the part turned back of described first sheet material with described second sheet material The operation that portion is bonded with each other.

It addition, in preferred device, be also equipped with the part turned back of described first sheet material and described second sheet material The engagement device that edge, both sides is bonded with each other.

In these cases, do not stretch in the two ends of stretchable layer stack, and middle body stretches, it is possible to easy as dress article Use parts.

Embodiment

The present invention is more clearly understood according to the explanation of preferred embodiment below that with reference to appended file.But, real Execute example and accompanying drawing is only used for diagram and explanation, shall not be applied to limit the scope of the present invention.The scope of the present invention is wanted by right Book is asked to limit.In the accompanying drawings, the identical unit number in multiple accompanying drawings represents identically or comparably part.

Hereinafter, embodiments of the invention are described with reference to the accompanying drawings.

Fig. 1 illustrates the manufacture device of stretchable layer stack W.

Stretchable layer stack W of the present embodiment clamps the carrying along crosscutting described sheet material S1, S2 between a pair sheet material S1, S2 The elastic component F (F1, F2) of the wire that the width Y of direction X extends, as shown in Fig. 9 C and Fig. 9 D, described flexible Duplexer W is flexible on described width Y.It should be noted that described stretchable layer stack W is such as formed by being cut off Disposable diaper, the gusset of medicated underpants, waistline.

In FIG, described sheet material S1, S2 both can be continuous print continuous webs on carrying direction X, it is also possible to be to remove Discontinuous fabric, resin sheet on fortune direction X.In case of the present embodiment, described elastic component F is so-called rubber Line but it also may be the rubber of banding.

This manufacture device possesses rotator 2, carrier 1, a pair sickle C, the first niproll 41 and the second niproll 42 etc..Described carrier 1 such as possesses four article first～the 4th conveyer belt 11～14 and driving means 3.

As Fig. 2 expresses, described first conveyer belt 11 and the second conveyer belt 12 are configured to the most close to each other.It addition, 3rd conveyer belt 13 and the 4th conveyer belt 14 are configured to the most close to each other.Described first conveyer belt 11 and the second conveyer belt 12 (first group of conveyer belt 1A) and the 3rd conveyer belt 13 and the 4th conveyer belt 14 (second group of conveyer belt 1B) are configured at niproll 41, it is separated from each other on the width Y of 42.

Described elastic component F is rolled up by described rotator 2 with the state tightening described two groups of conveyer belts 1A, 1B in driving Coiled.Such as, the main body 20 of the cup-shaped of described rotator 2 rotates around the quill shaft 21 of Fig. 3, will be inserted into described hollow The front end of the pulley 22 of the guiding in being arranged in described main body 20 of the elastic component F in axle 21 is extracted out.

On the other hand, the lateral surface of each conveyer belt 11～14 of Fig. 2 rotates towards the downstream of the carrying direction X of sheet material S.Cause This, when tension force acts on elastic component F, in other words when elastic component F extends, elastic component F in Helical form is wound in two groups of conveyer belts 1A, 1B continuously, is handled upside down towards downstream afterwards.

In FIG, described driving means 3 in order to by the described elastic component F of tensioned state towards described conveyer belt 11～ The downstream of the carrying direction X of 14 is carried and is made described four conveyer belts 11～14 rotate.In case of the present embodiment, such as Fig. 5 Shown in, elastic component F contacts with upper surface and the lower surface of conveyer belt 11～14.The described conveyer belt 11～14 of Fig. 2 is in institute State Part I F1 and the Part II F2 of the described elastic component F phase on the thickness direction Z of described sheet material S of elastic component F Under the state separated mutually, supply described elastic component F between described two sheet materials S1, S2 and a pair niproll 41,42.Separately Outward, control the rotary speed of described conveyer belt 11～14, so that the Part I F1 and Part II F2 of elastic component F become Almost parallel with the axial Y of niproll 41,42 or close to parallel.

In the diagram, described driving means 3 has by control that device 5 controls first～the 4th motor M1～M4.Described One motor M1 and the 4th motor M4 drive respectively the first conveyer belt 11 and the 4th conveyer belt 14 make they at full speed VH enter Row rotates.On the other hand, described second motor M2 and the 3rd motor M3 drives the second conveyer belt 12 and the 3rd transmission respectively Them are made to rotate with low velocity VL less than high speed VH with 13.By the speed difference of this conveyer belt, make the described folder of Fig. 5 Hold the elastic component F at position clamped by roller 41,42 (Fig. 6) described Part I F1 and Part II F2 and niproll 41, The axle center of 42 (Fig. 6) is almost parallel.

It should be noted that in the diagram, the powered band of at full speed VH 11,14 is applied with mesh.

In fig. 2, the upstream at the first niproll 41 is configured with known baffle plate 6.This baffle plate 6 folds described first sheet material Edge, the both sides Se of S1, and so that this folding part Sf after Zhe Dieing is not clipped between described first sheet material S1 and the second sheet material S2 Mode perform the folding of described first sheet material S1.In other words, baffle plate 6 folds the first sheet material S1's towards the first niproll 41 Edge, both sides Se, folding part Sf are clipped between the first niproll 41 and the non-collapsible portion Sn of the first sheet material S1.In other words, described folding Folded portion Sf folds in the way of overlapping with the face Ss that same described first niproll 41 of described first sheet material S contacts.

As Fig. 9 A expresses, the width of the described first sheet material S1 of unfolded state and the width of the second sheet material S2 are identical. In case of the present embodiment, as shown in the double dot dash line of Fig. 8 B, the length of the first niproll 41 is shorter than the second niproll 42, enters Enter in the space between two groups of conveyer belts 1A, 1B.On the other hand, the length of the second niproll 42 is longer than the width in described space, It is arranged in the lower section of conveyer belt 11～14.

Described first niproll 41 of Fig. 6 and the second niproll 42 make described elastic component F (Fig. 5) at clip position O It is clipped in the pair of between sheet material S1, S2 and be attached to described sheet material S1, S2, forms the complex W1 of Fig. 8 C.That is, Fig. 2's A pair niproll 41,42 presss from both sides between the unfolded described non-collapsible portion Sn and described second sheet material S2 of described first sheet material S1 Hold described elastic component F (F1, F2), in making on the width Y of described two sheet materials S1, S2 and described elastic component F Centre part is bonded to each other and forms complex W1.

As the method making elastic component F be attached to described sheet material S1, S2, it is also possible to from coating machine 7 to shown in Fig. 6 Two sheet material S2 apply binding agent with the surface faced by the first sheet material S1.Such as, in the upstream (clamping of described second niproll 42 The upstream of position O) it is configured with coating machine 7.The coating of this coating machine 7 is parallel to each other and along carrying direction with the surface of the second sheet material S2 The binding agent of the wire extended.

In the summary downstream of the bite O of Fig. 6, join entering the state between upper and lower conveyer belt 11,12 or 13,14 It is equipped with a pair sickle C, C shown in the double dot dash line of Fig. 8 C.It should be noted that omit the figure of described sickle C in figure 6 Show.

The described sickle C described elastic component F in described complex W1 is from described first sheet material S1 and second Elastic component F described in the partial cut that material S2 stretches out.

It should be noted that as shown in Fig. 8 C and Fig. 8 D, the elastic component F after cut-out does not bonds with sheet material S1, S2 Part, in other words both ends Fe because remove tension force and shrink immediately.

As shown in Fig. 2 and Fig. 5, it is configured with, in the downstream of a pair niproll 41,42, the roller 8 that turns back.

This roller 8 that turns back has along the axis 8c extended with the width Y orthogonal for carrying direction X of described complex W1, Along with the central authorities from described width Y, towards two ends 8e, diameter reduces, as shown in Figure 7 A, and the surface of this roller 8 that turns back and institute The face stating the same first sheet material S1 opposite side in the second sheet material S2 of complex W1 contacts.

That is, as in figure 2 it is shown, the roller 8 that turns back has the barrel surface being formed as taper in both side edges, along described width The barrel surface of the described taper of Y each other, has or the barrel surface of broad warp smooth relative to axis 8c.

It should be noted that in the present invention, " central " of the width Y of the roller 8 that turns back refers to turn back the width of roller 8 The region at the two ends of the center spending direction Y and the width Y not including this roller 8.

This roller 8 that turns back is while contacting while carrying described complex W1, along with described elasticity with described second sheet material S2 The middle body Fc of component F shrinks and makes the middle body Wc of described complex W1 shrink on described width Y, thus, The folding part Sf of described first sheet material S1 turns back towards the both side edges of the width Y of the described roller 8 that turns back as shown in Figure 7 B, with institute Edge, the both sides Se stating the second sheet material S2 is overlapping.Thus, stretchable layer stack W shown in Fig. 9 A and Fig. 9 B is generated.

As shown in Figure 6, it is configured with slewing rollers 10 and engagement device 9 in the described further downstream turning back roller 8.This joint fills Put 9 and implement embossing processing as shown in Figure 9 C, make the part turned back of described first sheet material S1 and the both sides of described second sheet material S2 Edge Se is bonded with each other.

It follows that the manufacture method of stretchable layer stack W is illustrated.

Edge, the both sides Se along carrying direction of the first sheet material S1 of Fig. 1 utilizes baffle plate 6 to bend.Folding this first In the operation of edge, the both sides Se of material S1, as Fig. 8 A expresses, so that this folding part Sf after Zhe Dieing is not clipped in described first Mode between material S1 and the second sheet material S2 is turned back described first sheet material S1.That is, so that described folding part Sf be contacted with first Mode overlapping for the face Ss of niproll 41 folds described folding part Sf.On the other hand, from coating machine 7 to the second sheet material S2 of Fig. 8 A Middle body Sc apply binding agent D.

When conveyer belt 11～14 driven device 3 of Fig. 1 drives and rotates, send bullet from the rotator 2 of Fig. 2 Property component F, elastic component F wind around conveyer belt 11～14 to set state.Thus, elastic component F is in the shape of a spiral around biography Send band 11～14 winding, be handled upside down towards the downstream of carrying direction X.

That is, the Part I F1 and Part II F2 of elastic component F with the state that is slightly slanted relative to axial Y along biography The upper surface with 11～14 is sent to be handled upside down with lower surface.Afterwards, powered first conveyer belt 11 of at full speed VH of Fig. 4 is utilized And the 4th conveyer belt 14 and with the speed difference between powered second conveyer belt 12 of low velocity VL and the 3rd conveyer belt 13, As it is shown in figure 5, the axial Y of Part I F1 and Part II F2 and niproll 41 is close to parallel, and it is supplied to the folder of Fig. 2 Hold between roller 41,42.

On the other hand, described two sheet materials S1, S2 are supplied between a pair niproll 41,42.

That is, the Part I F1 and Part II F2 at described elastic component F is separated from each other on described carrying direction X Under state, described elastic component F is supplied to described between two sheet materials S1, S2.Now, described Part I F1 and second F2 is divided to be supplied to described two sheets with the state being separated from each other on the thickness direction Z at described sheet material S1, S2 shown in Fig. 8 A Between material S1, S2.

Afterwards, elastic component F is carried to clip position O along the circumferential R of niproll 41,42.After this carrying, pass through Described elastic component F is clipped in described between two sheet materials S1, S2 by the pair of niproll 41,42, is configured to the elasticity of Fig. 8 B The state that component F bonds with two sheet materials S1, S2 one by one.

That is, between the unfolded described non-collapsible portion Sn and described second sheet material S2 of described first sheet material S1, institute is clamped State elastic component F, make middle body Sc, Fc phase of the width Y of described two sheet materials S1, S2 and described elastic component F Fit mutually and form complex W1.

After described configuration, such as, described elastic component F be clipped in the pair of between sheet material S1, S2 after, such as Fig. 8 C institute Show, in the part stretched out from the first sheet material S1 and the second sheet material S2, utilize a pair sickle C, C by described Part I F1 and Described elastic component F between two parts F2 cuts off one by one.Now, not bonding with sheet material S1, S2 in the elastic component F of Fig. 8 D Both ends Fe carry out so-called retraction and shrink.

So, generate the Part I F1 and second F2 of Fig. 5 to be alternately parallel to each other and P advises at a specific interval The complex W1 of Fig. 8 D then configured.

For the complex W1 of described Fig. 8 D, as shown in Figure 7 A, the second sheet material S2 same of described complex W1 is made The face of the first sheet material S1 opposite side contacts with the surface of the roller 8 that turns back, and carries described complex W1.

Here, as shown in Figure 7 A, described in the roller 8 that turns back there is the surface including two positions 82,82, said two position 82,82 along with the central authorities of Y in the width direction, towards two ends, diameter reduces, along with the middle body Wc of complex W1 because of elasticity The contractility of component F and want to shrink, the folding part Sf of the first sheet material S1 turns back as shown in Fig. 7 B and Fig. 9 A.That is, companion Along with the middle body Fc of the described elastic component F of Fig. 8 D shrinks, the middle body Wc of described complex W1 is in described width side Shrink on Y, thus effect makes the power that the folding part Sf of described first sheet material S1 turns back as shown in arrow Ar, described folding Portion Sf turns back as shown in Figure 9 A, overlapping with edge, the both sides Se of described second sheet material S2.

Complex W1 shrinks on width Y, thus the width side of the complex W1 (stretchable layer stack W) shown in Fig. 7 B Length on Y is shorter than the length on the width Y of the complex W1 shown in Fig. 7 A.

So, stretchable layer stack W shown in Fig. 9 A and Fig. 9 B is generated.

It should be noted that in described overlapping step and afterwards, elastic component F and the middle body of complex W1 Fc, Wc shrink as Fig. 9 B.

After described contraction, described stretchable layer stack W is supplied to engagement device 9 from the slewing rollers 10 of Fig. 6, such as, passes through The both ends Se of the second sheet material S2 of Fig. 9 C is repeatedly embossed processing and make the part turned back of described first sheet material S1 with Edge, the both sides Se of described second sheet material S2 is bonded with each other.It should be noted that this joint both can use binding agent and clamping Roller completes, it is also possible to carry out deposition.

So, as shown in Fig. 9 C and Fig. 9 D, it is thus achieved that the stretchable layer that middle body Wc stretches and both ends We does not stretches Stack W.It should be noted that described stretchable layer stack W can also along the cutting line extended on width Y cut-off and As gusset.

Wherein, the roller 8 that turns back of Fig. 7 A has the tapered cylinder face 82 of circular cone shape at two ends of barrel surface 81.That is, cylinder Face 81 is smooth relative to axis 8c or gently bends, and tapered cylinder face 82 is bigger than described barrel surface 81 relative to axis 8c Amplitude tilts.But, the surface of the roller 8 that turns back can also bend relative to axis 8c, such as, can also be barrel-shaped etc..

It addition, as shown in Figure 6, described in the roller 8 that turns back can also be configured to centered by fixing axle 88 rotate around arm 89 And fixing, thus the position adjustment of the roller 8 that easily carries out turning back.

Alternatively, it is also possible to Fig. 2 niproll 41,42 axial Y two ends complete cycle on arrange and engage with elastic component F Holding section, it is possible to the periphery along niproll carries elastic component F non-skidly.

It should be noted that elastic component F can also be formed as banding.

It addition, as disclosed in described JP63-243309A, it is also possible to utilize a pair band folder of the narrow width of banding Hold elastic component F1, F2, and after a pair band utilizing this banding clamps elastic component F, utilize another width wide Sheet material clamps elastic component F.

As it has been described above, with reference to the accompanying drawings of preferred embodiment, but can assume that those skilled in the art can read On the basis of reader description, change places at self-explantory range content and carry out various change and amendment.

Such as, the one side or both of sheet material S1, S2 may not be continuous sheet, but discontinuous sheet material.It addition, this Manufacture device and can also be provided with many groups side by side.It addition, a pair sheet material can not also bond, and it is by deposition.

It addition, elastic component can also be cut off by fusing.

It addition, the first of elastic component and second need not be parallel to each other, it is also possible to keep the state tilted to join It is placed in sheet material.

Alternatively, it is also possible to be provided with the leading-out portion of multiple elastic component on rotator, derive multiple elasticity from rotator Component.

Alternatively, it is also possible to reduce a pair niproll 41,42 length on width Y respectively, and make clip position O Between two groups of conveyer belts 1A, 1B.

Therefore, above such change and amendment are interpreted the model being contained in the present invention that claims are limited In enclosing.

Industrial utilizability

The present invention can be applied to be configured with the manufacture of the stretchable layer stack of the elastic component of multiple wire on sheet material.

Description of reference numerals

1: carrier；1A: the first group of conveyer belt；1B: the second group of conveyer belt

1C: centrage；11～14: the first～the 4th conveyer belt

2: rotator；20: main body；21: quill shaft；22: pulley

3: driving means

41,42: niproll

5: control device

6: baffle plate

7: coating machine

8: turn back roller；8c: axis；8e: two ends；81: barrel surface；82: tapered cylinder face

9: engagement device

C: sickle

D: binding agent

F: elastic component；F1: the first；F2: the second；Fc: middle body；Fe: both ends

M1: the first motor；M2: the second motor；M3: the three motor；M4: the four motor

N: normal direction (radially)

O: clip position

R: circumference

S1: the first sheet material；Se: edge, both sides；Sf: folding part；Sn: non-collapsible portion

S2: the second sheet material；Sc: middle body；Ss: the face contacted with the first niproll

T: tangential direction

X: carrying direction；Y: width, axially；Z: thickness direction

W: stretchable layer stack；W1: complex；Wc: middle body；We: both ends

Claims

1. a manufacture method for stretchable layer stack, this stretchable layer stack configures along crosscutting between the first sheet material and the second sheet material Multiple elastic components of the wire that the width in the carrying direction of described first sheet material and the second sheet material extends, and this stretchable layer Stack is flexible on described width, it is characterised in that

The edge, both sides along described carrying direction of described first sheet material is folded and forms the operation of folding part, in this operation In, in the way of making described folding part not be clipped between described first sheet material and the second sheet material, fold described first sheet material；

Described elastic structure is clamped between the non-collapsible portion not carrying out described folding and described second sheet material of described first sheet material Part, the middle body making the width of described first sheet material and the second sheet material and described elastic component is bonded to each other and is formed The operation of complex；

Cutting off at the part that described first sheet material and the second sheet material stretch out of described elastic component in described complex The operation of described elastic component；And

While making the face of the same described first sheet material opposite side of described second sheet material of described complex and the surface of the roller that turns back Contact is while carrying described complex, and the middle body along with described elastic component shrinks and makes the central part of described complex Divide and shrink on described width, thus by each folding part of described first sheet material to remove described in the edge of described second sheet material The operation that the overlapping mode of each side edge part in fortune direction is turned back, described in the roller that turns back in the carrying direction with described complex just have The upwardly extending axis in side handed over, and have from the central authorities of described width two positions that diameter reduces towards two ends.

Manufacture method the most according to claim 1, wherein,

It is mutual with the edge, both sides of described second sheet material that described manufacture method is also equipped with the part turned back making described first sheet material The operation engaged.

3. a manufacture device for stretchable layer stack, this stretchable layer stack configures along crosscutting between the first sheet material and the second sheet material Multiple elastic components of the wire that the width in the carrying direction of described first sheet material and the second sheet material extends, and this stretchable layer Stack is flexible on described width, it is characterised in that

The manufacture device of described stretchable layer stack possesses:

Baffle plate, it folds the edge, both sides along described carrying direction of described first sheet material, and so that has carried out the folding of this folding The mode that folded portion is not clipped between described first sheet material and the second sheet material performs the folding of described first sheet material；

A pair niproll, they are between the non-collapsible portion not carrying out described folding and described second sheet material of described first sheet material Clamp described elastic component, make the middle body of the width of described first sheet material and the second sheet material and described elastic component Bonded to each other and form complex；

Sickle, the portion stretched out from described first sheet material and the second sheet material of its described elastic component in described complex Office cuts off described elastic component；And

Turn back roller, and it has at the side upwardly extending axis orthogonal with the carrying direction of described complex, and has from described The central authorities of width two positions that diameter reduces towards two ends, and make described second sheet material of described complex The face of same described first sheet material opposite side contact while carrying described complex with the surface of the described roller that turns back, along with institute The middle body stating elastic component shrinks and makes the middle body of described complex shrink on described width, thus by institute Turn back in the way of overlapping with each side edge part along described carrying direction of described second sheet material in each folding part stating the first sheet material.

Manufacture device the most according to claim 3, wherein,

It is mutual with the edge, both sides of described second sheet material that described manufacture device is also equipped with the part turned back making described first sheet material The engagement device engaged.