CN106029025B

CN106029025B - The manufacturing method of absorber

Info

Publication number: CN106029025B
Application number: CN201580008713.5A
Authority: CN
Inventors: 奥将吾; 松永龙二; 中野康宏; 石川刚大
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2014-02-28
Filing date: 2015-01-27
Publication date: 2019-09-20
Anticipated expiration: 2035-01-27
Also published as: WO2015129367A1; JP2015164476A; JP6359292B2; CN106029025A

Abstract

The present invention provides the manufacturing method of absorber, conveys absorber precursor (4a) on (R) in one direction, and imposes incision processing to thickness direction, and manufactures the absorber (4) with slot (43,45).The manufacturing method of the absorber includes: to utilize the process that there is the cutting roller (61) of cutting edge (63,64) and anvil roller (62) to clamp absorber precursor (4a) in circumferential surface and form slot (43,45)；It is (4') wound in the winder (71) of bending machining mechanism (70) with the absorber precursor that will be formed with slot (43,45) and makes its deformation, thus makes to be formed in the pressing part softness around slot.

Description

The manufacturing method of absorber

Technical field

The present invention relates to the manufacturing methods of the absorber for absorbent commodity.

Background technique

A kind of technology known, in the suction for the absorbent commodities such as sanitary napkin or panty liner, disposable diaper Narrow slot or slot are set in acceptor, to improve the various performances of the absorbent commodity.Such as one is described in patent document 1 Kind is absorbing the honorable absorber for being formed with and penetrating through to multiple through holes at the back side.The absorber manufactures in the following way: making In hole machined roller of the roller surface with multiple protrusions and in position corresponding with protrusion there is the anvil roller of recess portion to be oppositely disposed, makes to inhale Thus acceptor is by absorbing dignity formation through hole between two rollers.

A kind of absorbent products are described in patent document 2, include elastomer, in the short side direction of product Centre region, which is fixed on, absorbs side, applies the power of contraction with configuration directional correlation；Slot is sent out in the contraction of elastomer The areas adjacent for waving effect is formed in absorber.The slot is by using cutting equipped with the sword for being configured at roller periphery in parallel to each other Roller is cut, or is formed using the cutting roller equipped with the sword for being configured at roller periphery non-parallelly in closer to each other, separated mode.

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2002-035036 bulletin

Patent document 2: Japanese Unexamined Patent Publication 2004-105723 bulletin

Summary of the invention

The present invention provides a kind of method, conveys absorber precursor in one direction, and to the absorber precursor Thickness direction imposes incision processing, and manufactures the absorber with slot.This method comprises: slot formation process, using in week Face has the cutting roller of cutting edge and accepts the anvil roller cramping absorber precursor of the cutting edge of the cutting roller, makes the cutting edge edge The thickness direction of the absorber precursor advance in the absorber precursor, thus have around the absorber precursor is formed and press The slot in portion processed；With softness process, the absorber precursor for being formed with above-mentioned slot is made to be wound in the winding of bending machining mechanism Portion and make the absorber precursor deform, thus make above-mentioned pressing part softness.

Detailed description of the invention

Fig. 1 (a) is to indicate that the physiology of an example as the absorbent commodity with absorber made according to the present invention is used For the skin of sanitary napkin with respect to the top view of surface side (positive dough sheet side), Fig. 1 (b) is the absorber for only indicating the sanitary napkin Extract top view out.

Fig. 2 is the schematic II-II cross-sectional view of Fig. 1.

Fig. 3 is the perspective view for schematically showing the device for manufacturing absorber shown in FIG. 1.

Fig. 4 is the cross-sectional view for indicating the major part amplification of the cutting roller in device shown in Fig. 3.

Fig. 5 is the schematic diagram of the device shown in Fig. 3 from side.

Fig. 6 is the schematic diagram (corresponding with Fig. 5 to scheme) for manufacturing another device of absorber shown in FIG. 1.

Fig. 7 (a) or Fig. 7 (d) is to indicate that the signal of the additional absorbents of other examples of method for folding of absorbent sheet is cutd open View.

Fig. 8 (a) or Fig. 8 (d) is the schematic diagram for indicating the configuration of winder of the bending machining mechanism in embodiment.

Specific embodiment

The inventors of the present invention recognize, as the above-mentioned prior art, using include circumferential surface have cutting edge cutting roller It is lasting from it when absorber forms slot by cutting with the slot processing unit (plant) of the anvil roller for the cutting edge for accepting cutting roller Property etc. from the point of view of viewpoints etc., when making the wider width of cutting edge, be easy to form the part suppressed around slot.When absorbing There are when this press portion around the slot of body, the rigidity around slot increases sometimes, exists to give full play to and inhale The problem of the advantages of acceptor setting slot is brought.

Therefore, problem of the present invention is that, a kind of absorber that can release above-mentioned prior art disadvantage is provided Manufacturing method and manufacturing device.

Hereinafter, based on its preferred embodiment and being described with reference to the present invention.Firstly, to as with according to this hair The sanitary napkin of an example of the absorbent commodity of the absorber of bright manufacture is illustrated.As depicted in figs. 1 and 2, physiology is used Sanitary napkin 1 include absorbent main body 5, and have longitudinal direction X corresponding with the front-rear direction of wearer and with this longitudinally it is orthogonal Lateral Y, the absorbent main body 5 include the absorber 4 of liquid retainability, are being configured at the skin of the absorber 4 just with respect to surface side The back sheet 3 of dough sheet 2 and the non-skin opposite side for being configured at the absorber 4.

In addition, in the present specification, skin opposite face is absorbent commodity or its component parts (such as absorbent main body 5) In, when wearing absorbent commodity towards the face of the skin side of wearer, non-skin opposite face is absorbent commodity or its structure At it is in component, when wearing absorbent commodity towards skin side opposite side (garment side) face.In addition, longitudinal direction X and absorption Property article (absorbent main body, absorber) length direction it is consistent, lateral Y and absorbent commodity (absorbent main body, absorber) Width direction (direction orthogonal to the longitudinal direction) it is consistent.

Absorbent main body 5, which is included on longitudinal X when wearing, and the fluid drainage portion of wearer (introitus etc.) is opposite matches The excretory portion counterpart B set；It is configured at when wearing than excretory portion counterpart B before the position of the veutro (front side) of wearer Square portion A；The rear part C than excretory portion counterpart B by the position of the back side (rear side) of wearer is configured at when wearing.

Sanitary napkin 1 not only has absorbent main body 5, also has a pair of of alar part 7,7, and a pair of alar part 7,7 is from absorbability master The both sides of the X along longitudinal direction of excretory portion counterpart B in body 5 are respectively to extending out on the outside of lateral Y.

As shown in Fig. 2, positive dough sheet 2 coats the whole region of the skin opposite face of absorber 4, and then from the edge of absorber 4 The both side edges of longitudinal X are stretched out to the outside of lateral Y.On the other hand, back sheet 3 coats the whole of the non-skin opposite face of absorber 4 A region, and then stretched out from the both side edges of the X along longitudinal direction of absorber 4 to the outside of lateral Y, it is formed together with aftermentioned lateral plate 10 Flank section 6.The extension portion that back sheet 3 and lateral plate 10 extend in the both side edges of the X along longitudinal direction from absorber 4, by bonding agent, Joint method well known to heat-sealing, ultrasonic sealing function etc. is engaged with each other.Positive dough sheet 2 and back sheet 3 respectively can also between absorber 4 To be engaged by bonding agent.

As shown in Fig. 2, absorber 4 has absorbent body piece 401 and 402 laminated multi-layer of central absorbent piece and is formed Stepped construction has multi-layer portion 42 in excretory portion counterpart B as depicted in figs. 1 and 2.As shown in Fig. 2, multi-layer portion 42 is to constitute The stacking number of plies of the absorbent sheet 401,402 of absorber 4 part more than part located around it.The multilayer of present embodiment The thickness in portion 42 is greater than the thickness of part located around it, forms oriented 2 side of positive dough sheet (sanitary napkin 1 in excretory portion counterpart B Skin with respect to surface side) protrusion outstanding.In addition, absorber 4 have formed absorber 4 shape main absorber 40 and with The small additional absorbents 41 of the main absorber 40 of the ratio that a part of main absorber 40 overlaps.Additional absorbents 41 are located at least in Excretory portion counterpart B.

Absorber 4 is preferably only made of the stepped construction of absorbent sheet 401,402, from thinner thickness, high-selenium corn power and From the viewpoint of folding the stability of processing and the freedom degree of shape distortion, which is preferably used in the holding of fiber interlayer There is the absorbent sheet of the particle of superabsorbent polymer.

Main absorber 40 includes the foldable structure of the absorbent body piece 401 containing paper pulp.Specifically, main absorber 40 By the way that absorbent body piece 401 is formed in the position infolding of broken line 401a, the 401b extended of X along longitudinal direction.That is, absorbent body Property piece 401 be formed as both ends folding folded state.At this point, in absorbent body piece 401, it is local each other with the position after infolding The mode of overlapping adjusts the position of broken line 401a, 401b.Main absorber 40 becomes and is made of absorbent body piece 401 as a result, 2 layers and 3 layers of stepped construction.

On the other hand, additional absorbents 41 include the foldable structure of the central absorbent piece 402 containing paper pulp.In detail and It says, it, will be than broken line 402a along the broken line 402a extended in longitudinal X for central absorbent piece 402 in additional absorbents 41 Position infolding in the outer part.Then, along broken line 402b, by than the position in the outer part broken line 402b to the portion being previously folded Position side infolding.Broken line 402a and 402b are formed in the position of the length substantially trisection of the lateral Y of central absorbent piece 402. Central absorbent piece 402 is formed as the folded state of coiled three folding as a result,.Therefore, additional absorbents 41 become by middle absorbent Property piece 402 constitute 3 layers of stepped construction.

As shown in Fig. 2, the central absorbent piece 402 for being formed as the folded state of coiled three folding, which is configured at, is formed as both ends folding The inside of the absorbent body piece 401 of folded folded state.That is, absorbent body piece 401 and central absorbent piece 402 become embedding The foldable structure of set.As a result, in the stepped construction of absorbent body piece 401 and central absorbent piece 402, with from center At least part of the periphery of absorbent sheet 402, the mode specifically extended outward from the whole region of the periphery, it is main Body absorbent sheet 401 is stacked.In addition, as described above, therefore additional absorbents 41, which are located at excretory portion counterpart B, it is auxiliary to constitute this The central absorbent piece 402 of absorber 41 is helped also to be located at excretory portion counterpart B.

It is this in each layer for the absorbent sheet that the stacking of multi-layer portion 42 is of five storeys, the part stacking other than multi-layer portion 42 haves three layers " absorbed layer " in invention.

The main absorber 40 of foldable structure including absorbent body piece 401 is substantially square of the corner with arc when looking down Shape shape, and rear part C is extended to from front part A via excretory portion counterpart B.Including central absorbent piece 402 on the other hand, The additional absorbents 41 of foldable structure be rectangular shape when looking down, and be configured near it from excretory portion counterpart B Rear part C.By a part configuration additional absorbents 41 in main absorber 40, it can easily and effectively increase absorber The absorptive capacity of 4 part.The main absorption formed by the absorbent body piece 401 being folded is configured at instead of additional absorbents 41 The structure of the inside of body 40, additional absorbents 41 can also be laminated in the flesh for constituting the absorbent body piece 401 of main absorber 40 Skin can also be laminated in non-skin with respect to surface side with respect to surface side.

The both sides of X along longitudinal direction in the skin opposite face (the skin opposite face of positive dough sheet 2) of absorbent main body 5, such as Shown in Fig. 2, in a manner of Chong Die with the left and right sides portion of X along longitudinal direction of absorber 4 when looking down, throughout absorbent main body 5 The substantially overall length of longitudinal X it is configured with a pair of of lateral plate 10,10.A pair of of lateral plate 10,10 is respectively in the line for being located at excretory portion counterpart B Linear the of the front and back (front part A and rear part C) of first closing line 11 of shape and longitudinal X positioned at first closing line 11 Two closing lines 12 are engaged with absorbent main body 5 (positive dough sheet 2).First closing line 11 is protruded to the outside of lateral Y when looking down Curve-like, the second closing line 12 is the threadiness (sawtooth linear) to extend with crossed longitudinally mode when looking down.Lateral plate 10 Non-woven fabrics including water-repellancy.In this way, when lateral plate 10 is in the skin opposite face (positive dough sheet of closing line 11,12 and absorbent main body 5 2) when engaging, as shown in Fig. 2, being drawn being formed than closing line 11,12 by the position of the inside of transverse direction Y by lateral plate 10 and positive dough sheet 2 The spatial portion P separated.Lateral Y from spatial portion P to absorbent main body 5 central opening, therefore, from lateral Y center outward The discharged liquids such as the menses of side flowing are accommodated in spatial portion P, as a result can be effectively prevented the leakage of discharged liquid.

As shown in Figure 1, flank section 6 is substantially stretched out in excretory portion counterpart B to the outside of lateral Y, as a result, in absorbability master The left and right sides along longitudinal X of body 5, which is extended, a pair of of alar part 7,7.In addition, as shown in Figure 1, positive dough sheet 2 and back sheet 3 From the front-end and back-end of longitudinal X of absorber 4 respectively to extending out on the outside of longitudinal X, these extension portion by bonding agent, Juncture well known to heat-sealing, ultrasonic sealing function etc. is engaged with each other and forms end sealing portion.

Alar part 7 is the non-skin for the crotch part to clothings such as shorts with respect to the part that surface side folds.As shown in Figure 1, Alar part 7 is located at the generally trapezoidal shape of the lateral side of absorbent main body 5 with bottom (side longer than upper bottom) when overlooking.In alar part 7 non-skin opposite face is formed with the alar part adhesive portion that the alar part 7 (sanitary napkin 1) is fixed on to the clothings such as shorts (not shown) (not shown) when in use, can will be to the non-skin opposite face (outer surface) of the crotch part of clothing using the alar part adhesive portion The folded alar part 7 in side is adhesively fixed in the crotch part.In addition, the non-skin opposite face in absorbent main body 5 is also formed with use In the main body adhesive portion (not shown) for the clothing that absorbent main body 5 is fixed on to shorts etc..In addition, in sanitary napkin 1, absorbability master The line of demarcation of body 5 and alar part 7 is the straight line (not shown) for linking two roots of longitudinal X of alar part 7.

As depicted in figs. 1 and 2, it at the skin opposite face of absorbent main body 5 (the skin opposite face of positive dough sheet 2), is formed with Positive dough sheet 2 and absorber 4 support or oppose 3 side of dough sheet be integrally recessed and the linear slot that is formed, which includes: opposite in excretory portion The cannelure 51 extended in portion B in longitudinal X；It is formed respectively by such a way that lateral Y extends in the front part A and rear part C First and second translots 52,53.Linear slot can pass through press process (so-called Embossing processing) that is adjoint hot or being not accompanied by heat Or the Embossing processings such as ultrasonic embossing and formed according to common method.In linear slot, although it is not shown, but positive dough sheet 2 and absorb Integration ands crimping via bonding agent or thermal welding etc. between body 4.

As shown in Figure 1, in absorber 4, it is formed in its excretory portion counterpart B with the state dispersed multiple along longitudinal X Longitudinal slot 43.Longitudinal slot 43 is formed as the state of dispersion on longitudinal X and the two directions transverse direction Y.As shown in Fig. 2, Preferably longitudinally slot 43 is formed and cutting absorber 4 to its thickness direction, and penetrates through the absorbent sheet for constituting absorber 4 401,402 stepped construction.Preferably longitudinally slot 43 is not formed at configuration in the upper and lower positive dough sheet 2 and back sheet of absorber 4 3。

Each longitudinal direction slot 43 independently, has non-slot portion 43 ' between adjacent longitudinal slot 43.Moreover, Whole region around each longitudinal direction slot 43 is surrounded by non-slot portion 43 '.

As described above, longitudinal slot 43 (is applied at incision by forming joint-cutting in the thickness direction thereof to absorber 4 Reason) and formed, the joint-cutting by not having width actually is formed, alternatively, being preferably formed into the sky of 1.5mm narrow width below Between.In the case where longitudinal slot 43 has width, which refers on the direction orthogonal with longitudinal extending direction of slot 43 The longitudinal direction slot 43 length.

Absorber 4 has multiple rear slots 45, the rear slot than the rear part C of excretory portion counterpart B rearward 45 are extended in a manner of having length direction on the direction that longitudinal X with sanitary napkin 1 intersects.The rear slot 45 such as Fig. 1 (b) Shown, the position of the central portion 45a of the length direction with slot 45 is located at the position of both ends 45b, 45b than the length direction The plan view shape of the position of the side front part A is rested against, more preferably there is the plan view shape of the side portion A convex curvature forwards.After in addition, Square slot 45 is formed with multiple at spaced intervals on longitudinal X of absorbent commodity.

The manufacturing device of the absorber 4 in above-mentioned sanitary napkin 1 is schematically shown in Fig. 3.Of the invention is preferred Embodiment in, as shown in figure 3, via the slot formation process for using disconnecting device 60 and using the soft of softness mechanism 70 Softening process manufactures the absorber or its non-individual body 4 of above-mentioned sanitary napkin 1.

The disconnecting device 60 used in slot formation process includes 61 and of cutting roller for having cutting edge 63,64 in circumferential surface Accept the anvil roller 62 of the cutting edge 63,64 of the cutting roller 61.Cutting edge 63 is the cutting edge for being used to form longitudinal slot 43, and edge is cut The circumferential direction and axial length direction for cutting roller 61 are dispersedly formed with multiple.Cutting edge 64 is the cutting edge for being used to form rear slot 45, Cutting roller 61 it is circumferentially spaced alternately formed it is multiple.

Cutting roller 61 is configured with anvil roller 62 in the parallel mode in their axle center 61 ', 62 '.In cutting roller 61 and anvil roller 62 Between be equipped with clearance or two rollers and become abutting state.Positioned at cutting roller 61 circumferential surface cutting edge 63,64 using with as target The consistent mode of shape and configuration of each slot 43,45 that is formed of absorber 4 formed, configured.

The precursor of the absorber of stepped construction including absorbent body piece and central absorbent piece, that is, absorber precursor 4a (hereinafter, for convenience referred to as " precursor 4a ".), it is conveyed, is supplied on the direction indicated by arrow R in Fig. 3 Between cutting roller 61 in disconnecting device 60 and anvil roller 62.The thickness direction of precursor 4a before being supplied between two rollers 61,62 Section state indicates in the circle indicated with I in Fig. 3.In precursor 4a before being supplied between two rollers 61,62, each absorbability It is disengaged condition between piece 401,402.

When being supplied to precursor 4a between two rollers 61,62, by the cramping of two rollers 61,62, set on the week of cutting roller 61 The cutting edge 63 in face is advanced in precursor 4a along the thickness direction of precursor 4a.Longitudinal slot 43 is formed in precursor 4a as a result, With rear slot 45.The section state for forming the thickness direction of the precursor 4a after longitudinal slot 43, indicates in Fig. 3 with II Circle in indicate.

In slot formation process, each absorbent sheet 401,402 due to cutting edge 63 traveling and by densification, exist as a result, Pressure contact portion 43a (the compacting being crimped between the absorbent sheet 401,402 (absorbing interlayer) of stacking is formed around longitudinal slot 43 Portion).Equally, the pressure being crimped between the absorbent sheet 401,402 (absorbing interlayer) of stacking is also formed around rear slot 45 Socket part 43a (pressing part)." around with the slot of pressing part " can be only a pair of of slot in the length direction along slot One or both of adjacency section is also possible to have pressure contact portion 43a throughout the complete cycle of slot with pressure contact portion 43a (pressing part) (pressing part).

It is represented in Fig. 4 the cross-sectional view for indicating the front end amplification of cutting edge 63 possessed by cutting roller 61.In the figure The left and right directions of paper is consistent with the axis direction of cutting roller 61.In addition, the direction orthogonal with paper in the figure is and precursor The parallel direction of the conveying direction of 4a.As shown in the drawing, the nose angle of cutting edge 63 is with two phase changes.Specifically, cutting Sword 63 is cut in the position of its front end, forms the first nose angle θ 1 using two bevel edges L1, L1.In addition, cutting edge 63 is than it The position of front end is other using what is be connected with each bevel edge L1 slightly by the position of base portion (in Fig. 4, the upper side of cutting edge 63) Bevel edge L2, L2 form the second nose angle θ 2.First nose angle θ, 1 to the second nose angle θ 2 is big.By the nose angle for making cutting edge 63 With two phasic changes, and keep 1 to the second nose angle θ 2 of the first nose angle θ big, the gap for being capable of forming narrower width can be obtained The advantageous effect of the abrasion of seam and inhibition cutting edge 63.

Advantageous effects more than make are more significant, the first nose angle θ 1 is preferably 40 degree or more, especially excellent It is selected as 60 degree or more, and preferably 100 degree hereinafter, particularly preferably 90 degree or less.Such as preferably 40 degree of the first nose angle θ 1 Above 100 degree hereinafter, particularly preferably 60 degree or more 90 degree or less.On the other hand, the second nose angle θ 2 is than the first nose angle θ 1 it is small be condition, preferably 30 degree or more, particularly preferably 50 degree or more, and preferably 90 degree hereinafter, particularly preferably 70 degree with Under.Such as preferably 30 degree or more 90 degree of the second nose angle θ 2 is hereinafter, particularly preferably 50 degree or more 70 degree or less.

When first nose angle θ, 1 to the second nose angle θ 2 is big, it is easier to generate pressure contact portion 43a around slot 43,45 (pressing part).

When, there are when pressure contact portion 43a (pressing part), worry cannot be abundant around longitudinal slot 43 or rear slot 45 It plays and advantage brought by the slot is set in absorber.Although for example, being to provide for the patch to the body shape of wearer Body and the slot being arranged, but the flexibility of absorber can not be sufficiently improved, it can not sufficiently obtain the raising effect of conformability Fruit, although can not sufficiently improve to wearing alternatively, be the slot being arranged to improve the movable trackability to wearer The movable trackability of person.

Therefore, in present embodiment, as described below, in the laggard softness for exercising the pressing part softness of slot formation process Chemical industry sequence.

In the softness process of present embodiment, to the absorber for foring slot 43,45 in slot formation process Precursor 4 ' (hereinafter, be referred to as " precursor 4 ' with slot " for simplicity.), use the softness with the first roller 71 (winder) Mechanism 70 carries out softness processing.First roller 71 is the winder that can wind the precursor 4 ' with slot.Here, " winding " is Refer to, when from the end on observation of the first roller 71, the precursor 4 ' with slot is not contacted with point with the first roller 71, to be bonded first The state that the mode of the circumferential surface of roller 71 contacts.That is, referring to the precursor 4 ' with slot so that there is a degree of packet in the first roller 71 The mode at angle (included angle) is conveyed.

Softness mechanism 70 in present embodiment further includes being configured at band in addition to the first roller 71 as shown in Figure 3 and Figure 5 The third of second roller 72 and the downstream side being configured on the conveying direction of the upstream side on the conveying direction of the precursor 4 ' of slot Roller 73.First~third roller 71~73 configures in such a way that their axle center 71 ', 72 ', 73 ' is parallel to each other.In addition, first It is equipped with clearance between roller 71 and the second roller 72, also is provided with clearance between the second roller 72 and third roller 73.First~third roller is equal It is the flat plain-barreled roll in surface.

First roller 71 is configured in the mode that a part enters in space between the second roller 72 and third roller 73, it is more specific and Speech, half of downside of roller 71 or so enter in the space between the second roller 72 and third roller 73.

In addition, as the winder in the present invention, other than roller, additionally it is possible to enumerate in conveyer belt, band and be folded by roller And it is deformed into the part etc. that section is arc-shaped.

Implement the precursor 4 ' with slot of the object of softness processing well known to conveyer belt etc. by softness mechanism 70 Supply unit conveying (not shown), is imported on the circumferential surface of the second roller 72 as shown in Figure 5, then turns on the circumferential surface of the first roller 71 It moves, is further transferred on the circumferential surface of third roller 73, later from the circumferential surface of third roller 73 to conveying mechanism well known to conveyer belt etc. Transfer (not shown), and then by downstream transport.

As shown in figure 5, the precursor 4 ' with slot is deformed into the section protruded to the first face side a on the circumferential surface of the second roller 72 For the shape of arc-shaped, the shape that the section protruded to the second face side b is arc-shaped is deformed on the circumferential surface of the first roller 71, into And the shape that the section protruded to the first face side a is arc-shaped is deformed on the circumferential surface of third roller 73.Precursor 4 ' with slot It is deformed into the shape of the circumferential surface of first~third of fitting roller 71~73 and passes through first~third roller 71~73.In addition, first~ Third roller 71~73 can be itself driven roller with driving mechanisms (not shown) such as servomotors, be also possible to not have There is the free roll of driving.At this point, it is preferred that driven roller (not shown) is arranged near the downstream side of third roller 73, so that will not be due to The winding of first~third roller 71~73 and the transporting for damaging the precursor 4 ' with slot.In Fig. 3, in the circle indicated with III After illustrating the super-soft processing carried out using first~third roller 71~73, the thickness direction of absorber 4 section state.

Precursor 4 ' with slot is successively deformed into the shape of the circumferential surface of the second roller 72 of fitting, the first roller 73 and third roller 73 on one side Shape is conveyed on one side, as a result, in pressure contact portion 43a, is stripped between each absorbent sheet 401,402 (absorbed layer) engaged before this And separate, each absorbent sheet 401,402 returns to the disengaged condition of the state before forming slot.

Thereby, it is possible to after pressure contact portion 43a (pressing part) softness for successfully obtaining will be formed in around slot 43,45 , the non-individual body 4 of absorber as target.The non-individual body 4 of absorber cuts into each absorbability by well known cutting mechanism The size of the absorber of article, and become the absorber 4 of the size of the absorber of above-mentioned sanitary napkin 1.

In precursor 4 ' with slot, the first face a be slot formation when positioned at the face of 61 side of cutting roller, the second face b be Positioned at the face of 62 side of anvil roller when slot formation.

For the winder of bending machining mechanism of the invention, can be the first roller 71 make like that the precursor 4 ' with slot to The roller of first face a lateral bend, be also possible to second and third roller 72,73 make the precursor 4 ' with slot to the second face b lateral bending like that Bent roller, but preferably there is the roller for making the precursor 4 ' with slot to the first face a lateral bend for bending machining mechanism of the invention Both (winder) and the roller (winder) to the second face b lateral bend more preferably have the softness for present embodiment Make the precursor 4 ' with slot to two rollers (winder) of face a lateral bend and to another face b lateral bending as mechanism 70 Total 3 or more rollers of 1 bent roller (winder).

In present embodiment, as shown in figure 5, in the part shifted from the second roller 72 to the first roller 71, the precursor with slot 4 ' are bent in such a way that the cross sectional shape along conveying direction R is formed as S shape, are shifting from the first roller 71 to third roller 73 Part, the precursor 4 ' with slot is also bent in such a way that the cross sectional shape along conveying direction R is formed as S shape.It is preferred that Precursor 4 ' with slot is formed as S word in the part shifted from roller to roller, with the length 100cm range below of the conveying direction The mode of shape is bent.In addition, also including the shape of falling S reversed left to right in S shape described in this specification.

In first~third roller 71~73, the wrap angle 11 of maximum first roller 71 of the cornerite of the precursor 4 ' with slot is preferred Be 10 degree or more, more preferably 40 degree or more, and preferably 180 degree hereinafter, more preferably 90 degree hereinafter, additionally, it is preferred that being 10 Spend or more 180 degree hereinafter, more preferably 40 degree or more 90 degree or less.

The cornerite of the precursor 4 ' with slot in first roller 71 refers to, with the plane truncation orthogonal with the axle center 71 ' of roller It is most upper in region that the precursor 4 ' with slot is abutted with the first roller 71 in the section of first roller 71 and the precursor 4 ' with slot The first contact P (not shown) is set as at trip, and when by being set as the second contact P ' (not shown) at the most downstream in the region, connection First contact P and the straight line (line segment) in axle center 71 ' and the second contact P ' of connection and the straight line (line segment) in axle center 71 ' are formed by angle Degree.In addition, the cornerite of the precursor 4 ' with slot in the second roller 72 and third roller 73 also refers to the first contact P of connection and axle center 72 ' or the straight line (line segment) and the second contact P ' of connection and the straight line (line segment) in axle center 72 ' or axle center 73 ' in axle center 73 ' formed Angle.

In addition, the radius of the first roller 71 is preferably 10mm or more, more preferably 15mm or more, and preferably 50mm hereinafter, More preferably 20mm hereinafter, and preferably 10mm or more 50mm hereinafter, more preferably 15mm or more 20mm or less.

In second roller 72 and third roller 73, the wrap angle 12 of the precursor 4 ' with slot, θ 13 are respectively preferably 10 degree or more, more Preferably 20 degree or more, and preferably 180 degree hereinafter, more preferably 45 degree hereinafter, and preferably 10 degree or more 180 degrees hereinafter, More preferably 20 degree or more 45 degree or less.

In addition, the second roller 71 and the respective radius of third roller 73 are preferably 10mm or more, more preferably 15mm or more, and it is excellent Be selected as 50mm hereinafter, more preferably 20mm hereinafter, and preferably 10mm or more 50mm hereinafter, more preferably 15mm or more 20mm with Under.

In addition, from the viewpoint of the softness of the pressing part on the periphery of slot 43, preferably first~third roller 71~73 In the radius of at least one roller be 4 times of length of the slot 43 on the conveying direction of the precursor 4 ' with slot hereinafter, it is preferred that two The radius of a above roller is 4 times of the above-mentioned length of the slot 43 hereinafter, it is preferred that the radius of whole rollers is the upper of the slot 43 4 times or less for stating length.

The length of slot mentioned here, in the landform parallel with conveying direction of slot the slot 43 as shown in Fig. 3 The overall length of the length direction of the Cheng Shiwei slot is the slot on conveying direction when slot is not formed parallel to conveying direction Front-end edge and end edge between conveying direction length.

It by length of the slot of softness on the conveying direction defined in this way is preferably 2mm or more in softness process, More preferably 5mm or more, and preferably 100mm hereinafter, more preferably 50mm hereinafter, and preferably 2mm or more 100mm hereinafter, More preferably 5mm or more 50mm or less.

In addition, radius of curvature when winder is cylindric roller is identical as the radius of roller.

On the other hand, in the case where winder is not roller, for example, being folded in conveyer belt, band by roller in winder And in the case where being deformed into the part that section is arc-shaped, advantageous version is band at the radius of curvature for the band that its section is arc-shaped 4 times or less of length on the conveying direction of the precursor 4 ' of slot.

In addition, the softness process in the present invention can for the linear slot for being formed as extending in the conveying direction Obtain superior softness effect.

Fig. 6 is the figure for indicating another embodiment of the present invention.

In embodiment shown in fig. 6, using with the mutually isostructural disconnecting device 60 of above-mentioned disconnecting device 60, by absorber Precursor 4a formed the precursor 4 ' with slot after, using include have cutting edge 83 cutting roller 81 and accept cutting roller cutting Precursor 4 ' with slot is cut into the size of single absorber 4, monomer is made by the end cut device 80 of the anvil roller 82 of sword 83 The precursor 4 ' with slot, to the precursor 4 ' with slot of the monomer, using including the transfer roller that there is suction hole in outer peripheral surface First bending machining mechanism 70A of 75 (winders) carries out the first softness process.Transfer roller 75 on its direction of rotation, From the position of the receiving unit P1 than the single precursor 4 ' with slot on the front to being more than to the position of the transfer portion P2 of conveyer belt 79 In the range P3 set, it is able to carry out the attraction from outer peripheral surface.In above-mentioned range P3, the attraction from outer peripheral surface is carried out on one side, The single precursor 4 ' with slot is set to be deformed into the shape of the circumferential surface of fitting transfer roller 75 on one side, accordingly, for for discontinuous body The single precursor 4 ' with slot, can also prevent the floating from roller outer peripheral surface of the precursor 4 ' with slot, and make slot Around pressure contact portion 43a (pressing part) efficiently softness.

In embodiment shown in fig. 6, after having used the first softness process of transfer roller 75, make band-like serialgram 76 converge with the precursor 4 ' with slot of monomer, later to including serialgram 76 and be configured at one of serialgram 76 at intervals The laminated body 77 of the precursor 4 ' with slot of monomer on face carries out the second soft chemical industry using the second bending machining mechanism 70B Sequence.

Second bending machining mechanism 70B has and above-mentioned bending other than the first roller 71A has attracting mechanism this point The identical structure of organisation of working 70.

Multiple suction holes are provided in the circumferential surface of the first roller 71A, the part other than opening portion is formed as flat.First roller 71A With connection circumferential surface opening portion and the opening portion set on side intake channel, be set to side opening portion and with the side During the suction device overlapping of the arc-shaped of relative configuration, the attraction from circumferential surface is carried out.

In the second softness process that the second bending machining mechanism 70B is carried out, also carry out from the circumferential surface of the first roller 71A Attract, and above-mentioned laminated body 77 is made to be deformed into the shape for being bonded the circumferential surface of the first roller 71A, thereby, it is possible to make 77 institute of laminated body In the precursor 4 ' with slot for the monomer for including, around slot pressure contact portion 43a (pressing part) efficiently softness.

Softness process is carried out with as follows to the precursor 4 ' with slot in the state of with the band-like stacking of serialgram 76 Advantage: the rear for inhibiting the front-end and back-end on the conveying direction R of the precursor 4 ' with slot of monomer and being formed by cutting edge 64 45 hooking of slot phase offset caused by the second bending machining mechanism 70B or warpage, the processing rolled etc. are bad.First roller The attractived region P4 of 71A is identical as the contact range of the precursor 4 ' with slot, from the sight floated for preventing the precursor 4 ' with slot From the point of view of point, attracting holding only is carried out in the curved period of laminated body 77 preferably on the first roller 71A.

In addition, as band-like serialgram 76, it is however preferred to have the sheet material of aeration, for example, being able to use including having The strip blank of the positive dough sheet of the non-woven fabrics of aeration.

The forming material of each section of the sanitary napkin 1 of above embodiment is illustrated, as positive dough sheet 2 and the back side Piece 3 uses a variety of materials used at present in the technical field without special limitation.As positive dough sheet 2, such as can Use the piece of the liquid permeabilities such as the various non-woven fabrics or apertured film for implementing hydrophilicity-imparting treatment.In addition, as back sheet 3, energy Enough using the material of liquid impermeability or the material of water-repellancy.As the material of liquid impermeability, it is able to use resin film Or laminated material of resin film, resin film and non-woven fabrics with micropore and with penetrability etc. etc., the material as water-repellancy Material, be able to use the compound nonwoven cloth of the multilayered structure including spun-bonded/melt-blown/spunbond etc., spun-bonded non-woven fabrics, hot sticky non-woven fabrics, Hot-wind nonwoven cloth etc..

As the absorbent sheet 401,402 for constituting absorber 4, it is able to use and spreads high inhale on wet paper or non-woven fabrics The property received polymer, is overlapped paper or non-woven fabrics on it, absorbent sheet obtained by integration is dried later.

As this absorbent sheet, such as also it is able to use documented by Japanese Unexamined Patent Publication 8-246395 bulletin and absorbs Property piece.

One sheet material can be cut into regulation shape and be used as pieces of absorbent body by the absorbent sheet.As every a piece of absorption Property piece thickness, preferably 0.1mm or more, particularly preferably 0.3mm or more, also preferably 2mm hereinafter, particularly preferably 1.5mm following.More specifically, preferably 0.1mm or more 2mm is hereinafter, particularly preferably 0.3mm or more 1.5mm or less.

More than, it will be illustrated the present invention is based on its preferred embodiment, but the present invention is not limited to above-mentioned embodiment party Formula.For example, sanitary napkin 1 is also possible to the sanitary napkin without alar part 7.Alternatively, it is also possible to being the rear part in absorbent main body 5 Two sides there is the sanitary napkin to the fixed rear alar part of the inner surface of shorts extension.In addition, can not also be formed in absorber Rear slot 45, and only form longitudinal slot 43.In addition, in the manufacturing method of absorber shown in fig. 6, it is convenient to omit use First softness process of transfer roller 75 also can be omitted the layer of the band-like serialgram using the second bending machining mechanism 70B Folded or the second softness process.Also can replace the longitudinal slot parallel with conveying direction, and formed relative to conveying direction and The inclined slot in the two directions of orthogonal to that direction.In addition, the absorber of manufacture can also not have multi-layer portion 42, absorb The stacking number of property piece is identical in whole region.In addition, setting multi-layer portion 42 when multi-layer portion 42 in absorbent sheet stacking Number is not limited to the number of plies shown in Fig. 2, and multi-layer portion 42 and the difference of the stacking number of the absorbent sheet of part in addition to this are also not necessarily limited to The number of plies shown in Fig. 2.

In above-mentioned embodiment, constitute absorber 4 absorbent body piece 401 and central absorbent piece 402 respectively by Fold and be formed as include multilayer stepped construction, but also can replace the structure, multi-disc be laminated in the absorbent sheet of monolithic.Separately Outside, the method for folding of absorbent sheet also can be using the method for folding of multiplicity, for example, be also possible to will be central for additional absorbents 41 The absorber that absorbent sheet 402 is folded by method for folding shown in Fig. 7 (a)~Fig. 7 (d).

Absorber as manufacturing object of the invention is not limited to this mode, is also possible to other way, e.g. paper The fiber accumulations body of pulp fibres and water absorbent polymer.In this case, due to passing through the first and/or second softness process, It is stripped and separates between paper pulp fiber in pressure contact portion 43a, distance expands between the fiber of paper pulp, and thus, it is possible to obtain softness Effect.

In addition, above embodiment is the example for applying the present invention to the absorber manufacture of sanitary napkin, but this Invention is similarly applicable to the absorber of other absorbent commodities, inhales such as disposable diaper, incontinence protection, panty liner In the manufacture of acceptor.

About above-mentioned embodiment, invention additionally discloses the manufacturing method of absorber below and manufacturing devices.

A kind of manufacturing method of absorber of 1 > of < conveys absorber precursor in one direction, and to the absorber The thickness direction of precursor imposes incision processing, and manufactures the absorber with slot, and the feature of the manufacturing method of the absorber exists In, comprising:

Slot formation process utilizes the anvil of the cutting roller in circumferential surface with cutting edge and the cutting edge for accepting the cutting roller Roller clamps absorber precursor, and the cutting edge is made to advance in the absorber precursor along the thickness direction of the absorber precursor, by This slot with pressing part around absorber precursor formation；With

Softness process makes the absorber precursor for being formed with above-mentioned slot be wound in the winder of bending machining mechanism and make Absorber precursor deformation, thus makes above-mentioned pressing part softness.

The manufacturing method for the absorber that 2 > of < such as 1 > of < is recorded, wherein

Above-mentioned absorber has the stepped construction including multiple absorbed layers,

In above-mentioned slot formation process, multiple pressure contact portions for being crimped of interlayers that absorb are formed as above-mentioned pressing part, In above-mentioned softness process, at least one of the pressure contact portion is made to absorb interlaminar separation and make the pressure contact portion softness.

The manufacturing method for the absorber that 3 > of < such as 1 > of < or 2 > of < are recorded, wherein

Above-mentioned bending machining mechanism has at least one roller as above-mentioned winder, at least one above-mentioned roller, is formed with The cornerite of the absorber precursor of above-mentioned slot is 10 degree or more 180 degrees or less.

The manufacturing method for the absorber that any one of 4 > of < such as 1 > of <~<, 3 > is recorded, wherein

Above-mentioned winder has multiple suction holes on surface, and the absorber precursor for being formed with above-mentioned slot is passed through suction on one side Draw and is held in the surface on one side and makes its deformation.

The manufacturing method for the absorber that any one of 5 > of < such as 1 > of <~<, 4 > is recorded, wherein

Above-mentioned bending machining mechanism has multiple above-mentioned winders, bends to the absorber precursor for being formed with above-mentioned slot Section is S shape.

The manufacturing method for the absorber that any one of 6 > of < such as 1 > of <~<, 5 > is recorded, wherein

Above-mentioned absorber precursor or above-mentioned absorber have at the position for the excretory portion counterpart for being configured at absorbent commodity Multi-layer portion, the multi-layer portion are the stacking number for the absorbent sheet for constituting the absorber parts more than part located around it.

The manufacturing method for the absorber that 7 > of < such as 6 > of < is recorded, wherein

The thickness of above-mentioned multi-layer portion is greater than the thickness of part located around it, in the excretory portion for being configured at absorbent commodity The position of counterpart forms the positive dough sheet side protrusion outstanding of oriented absorbent commodity.

The manufacturing method for the absorber that any one of 8 > of < such as 1 > of <~<, 7 > is recorded, wherein

Above-mentioned absorber is only made of the stepped construction of absorbent sheet.

The manufacturing method for the absorber that any one of 9 > of < such as 1 > of <~<, 8 > is recorded, wherein

Above-mentioned absorber precursor or above-mentioned absorber include the absorbent sheet of single or multi-layer structure, which is logical It crosses and spreads superabsorbent polymer on wet paper or non-woven fabrics, be overlapped paper or non-woven fabrics on it, later drying integrated Obtained from.

The manufacturing method for the absorber that any one of 10 > of < such as 1 > of <~<, 9 > is recorded, wherein

Above-mentioned slot is formed as extending on the conveying direction of above-mentioned absorber precursor linear.

The manufacturing method for the absorber that any one of 11 > of < such as 1 > of <~<, 10 > is recorded, wherein

In stating absorber precursor or above-mentioned absorber, at the position for the excretory portion counterpart for being configured at absorbent commodity, It is multiple to be formed along longitudinal longitudinal slot of the absorbent commodity with the state dispersed.

The manufacturing method for the absorber that any one of 12 > of < such as 1 > of <~<, 10 > is recorded, wherein

In absorber precursor or above-mentioned absorber, along longitudinal longitudinal slot of absorbent commodity in absorbent commodity The two directions of vertical and horizontal on formed with the state of dispersion.

The manufacturing method for the absorber that any one of 13 > of < such as 1 > of <~<, 12 > is recorded, wherein

The longitudinal direction of longitudinal X along absorbent commodity is formed and cutting above-mentioned absorber precursor to its thickness direction Slot, longitudinal direction slot perforation constitute the stepped construction of the absorbent sheet of above-mentioned absorber.

The manufacturing method for the absorber that any one of 14 > of < such as 1 > of <~<, 13 > is recorded, wherein

Multiple longitudinal gaps of longitudinal X along absorbent commodity are formed in above-mentioned absorber precursor or above-mentioned absorber Seam, independently, non-slot portion is entire around longitudinal slot between adjacent longitudinal slot for each longitudinal direction slot Region is surrounded by non-slot portion.

The manufacturing method for the absorber that any one of 15 > of < such as 1 > of <~<, 13 > is recorded, wherein

Above-mentioned absorber in the rear part for being located at the excretory portion counterpart position rearward than absorbent commodity, have with Multiple rear slots that mode on the crossed longitudinally direction with absorbent commodity with length direction extends.

The manufacturing method for the absorber that 16 > of < such as 15 > of < is recorded, wherein

Above-mentioned rear slot has the position of the position of the central portion of the length direction of slot and the both ends of the length direction It sets compared to the plan view shape positioned at the front part side of absorbent commodity, preferably there is the vertical view shape to the front part side convex curvature Shape.

The manufacturing method for the absorber that 17 > of < such as 15 > of < or 16 > of < are recorded, wherein

Above-mentioned rear slot is formed with multiple at spaced intervals on longitudinal X of absorbent commodity.

The manufacturing method for the absorber that any one of 18 > of < such as 1 > of <~<, 16 > is recorded, wherein

Above-mentioned cutting edge has the first nose angle θ 1 for being formed by two bevel edges L1, L1 in the position of its front end, than Before the position of its front end has second formed by other bevel edge L2, the L2 being connected with each bevel edge L1 slightly by the position of base portion Angle θ 2, the first nose angle θ 1 is held to be greater than the second nose angle θ 2.

The manufacturing method for the absorber that 19 > of < such as 18 > of < is recorded, wherein

First nose angle θ 1 is preferably 40 degree or more, and particularly preferably 60 degree or more, and preferably 100 degree hereinafter, special Preferably 90 degree hereinafter, and the first nose angle θ 1 be preferably 40 degree or more 100 degree hereinafter, particularly preferably 60 degree or more 90 degree with Under.

The manufacturing method for the absorber that 20 > of < such as 18 > of < or 19 > of < are recorded, wherein

Second nose angle θ 2 is with smaller for condition than the first nose angle θ 1, preferably 30 degree or more, particularly preferably 50 degree with On, and preferably 90 degree hereinafter, particularly preferably 70 degree hereinafter, and the second nose angle θ 2 be preferably 30 degree or more 90 degree hereinafter, Particularly preferably 50 degree or more 70 degree or less.

The manufacturing method for the absorber that any one of 21 > of < such as 1 > of <~<, 20 > is recorded, wherein

It will be formed with when in the absorber precursor i.e. precursor with slot of above-mentioned slot, slot is formed and be located at above-mentioned cutting When the face of roller side is set as being set as the second face b positioned at the face of above-mentioned anvil roller side when the first face a, slot formation,

Above-mentioned bending machining mechanism has as above-mentioned winder makes the above-mentioned precursor with slot to above-mentioned first face a lateral bending Bent roller, perhaps with making the above-mentioned precursor with slot to the roller of above-mentioned second face b lateral bend or have and make above-mentioned band slot Roller of the precursor to above-mentioned first face a lateral bend and both rollers to above-mentioned second face b lateral bend.

The manufacturing method for the absorber that any one of 22 > of < such as 1 > of <~<, 21 > is recorded, wherein

Above-mentioned bending machining mechanism has as above-mentioned winder makes the above-mentioned precursor with slot to above-mentioned first face a and upper It states curved two rollers in a surface side in the second face b and makes the above-mentioned precursor with slot to curved 1 roller in another surface side Total 3 or more rollers.

The manufacturing method for the absorber that any one of 23 > of < such as 1 > of <~<, 22 > is recorded, wherein

Length of the above-mentioned slot on the conveying direction of above-mentioned absorber precursor is 2mm or more 100mm or less.

The manufacturing method for the absorber that any one of 24 > of < such as 1 > of <~<, 23 > is recorded, wherein

The radius of curvature of above-mentioned winder is 4 times of the length on the conveying direction of the above-mentioned absorber precursor of above-mentioned slot Below.

The manufacturing method for the absorber that any one of 25 > of < such as 1 > of <~<, 24 > is recorded, wherein

The axle base of each roller of above-mentioned winder is the length on the conveying direction of the above-mentioned absorber precursor of above-mentioned slot 4 times or less of degree.

The manufacturing method for the absorber that any one of 26 > of < such as 1 > of <~<, 25 > is recorded, wherein

Above-mentioned absorber is the absorber of absorbent commodity.

The manufacturing method for the absorber that 27 > of < such as 26 > of < is recorded, wherein

Absorbent commodity is sanitary napkin, disposable diaper, incontinence protection or panty liner.

The manufacturing method for the absorber that 28 > of < such as 26 > of < or 27 > of < are recorded, wherein

In above-mentioned slot formation process, in the positive dough sheet and back of the upper and lower absorbent commodity for being configured at above-mentioned absorber Dough sheet does not form above-mentioned slot.

A kind of manufacturing method of absorbent commodity of 29 > of <, the absorbent commodity include liquid retainability absorber and It is configured at back sheet of the skin with respect to the positive dough sheet of surface side and the opposite surface side of non-skin for being configured at the absorber of the absorber, Wherein,

Above-mentioned absorber is manufactured by the method that any one of above-mentioned 1 > of <~<, 28 > is recorded.

Embodiment

Hereinafter, the present invention is described in more detail using embodiment.

(embodiment 1)

Absorbent sheet (absorbed layer) as shown below is used as absorbent sheet 401,402, manufactures Fig. 1 and shown in Fig. 2 section The band-like absorber precursor 4a of face structure.

The absorber precursor 4a band-like to this, using Fig. 3 and device shown in fig. 5, carry out longitudinal slot 43 formation and Softness processing to the precursor with slot, obtains the absorber with slot.

The diameter of first~third roller is set as 37mm, and configuration is as shown in table 1 and Fig. 8 (a).In the defeated of the precursor with slot The length for the linear slot 43 that the side of sending upwardly extends is 20mm, is comparable to 1.08 times of the radius (radius of curvature) of each roller Length.

Absorbent sheet: gathered using the cross-linked cellulose fiber and coniferous tree paper pulp, high-hydroscopicity that will be supplied with air-flow After object is closed with weight ratio 5:2:3 accumulation, dry type piece obtained from being fixed using the PVA (weight ratio 2.4%) as bonding agent.It is main Body absorbent sheet 401 is gram quantity 75g/m², thickness 0.45mm, central absorbent piece 402 is gram quantity 80g/m², thickness 0.50mm.Its In, gram quantity is measured according to the measurement of method documented by JIS-P8124, thickness according to JIS-P8118:1998.The measurement of thickness Thickness measurer on the middle table manufactured using PEACOCK company places the measurement plate of 5cm × 5cm, measures 2.5g/cm²Under load Thickness.

(embodiment 2~4)

In embodiment 2,3 other than the configuration of first~third roller similarly to Example 1, in addition to first in embodiment 4 The configuration of~third roller and absorber precursor 4a are to similarly to Example 1, and obtaining band other than the importing position change of the first roller The absorber of slot.In addition, the configuration about first~third roller, shown in embodiment 2 such as table 1 and Fig. 8 (b), embodiment 3 such as table Shown in 1 and Fig. 8 (c), shown in embodiment 4 such as table 1 and Fig. 8 (d).

(comparative example 1)

Other than without bending machining, the absorber with slot is obtained similarly to Example 1.

(evaluation)

For absorber obtained in embodiment and comparative example, the length direction center of multi-layer portion is measured by following methods The flexural rigidity in portion indicates its result in table 1.

(measuring method of flexural rigidity)

The evaluation of absorber flexural rigidity is carried out according to JISL-1096 (general fabrics test method).Evaluating apparatus uses The Handle-O-Meter (pattern: HOM-3) of Daiei science smart device production society, institute manufacture.The groove of Handle-O-Meter Width is set to 20mm.

The obtained absorber with slot is placed in the fulcrum bearing of above-mentioned Handle-O-Meter, the more of absorber are made The length direction centre in layer portion carries out commenting for the flexural rigidity when width direction is bent absorber in the center of groove Valence.

[table 1]

According to the comparison of result shown in table 1 it is found that according to the method for the present invention, can efficiently manufacture the periphery of slot The excellent absorber of the soft and whole flexibility in portion.

Industrial utilizability

In accordance with the invention it is possible to which efficiently manufacture has the absorber of soft slot.

Claims

1. a kind of manufacturing method of absorber, absorber precursor is conveyed in one direction, and to the absorber precursor Thickness direction imposes incision processing, and manufactures the absorber with slot, and the manufacturing method of the absorber is characterized in that, wraps It includes:

Slot formation process is pressed from both sides using the anvil roller of the cutting roller in circumferential surface with cutting edge and the cutting edge for accepting the cutting roller Absorber precursor is pressed, so that the cutting edge is advanced in the absorber precursor along the thickness direction of the absorber precursor, thus exists The absorber precursor forms the slot that surrounding has pressing part；With

Softness process makes the absorber precursor for being formed with the slot be wound in the winder of bending machining mechanism and make the suction The deformation of acceptor precursor, thus makes the pressing part softness,

It will be formed with when in the absorber precursor i.e. precursor with slot of the slot, slot is formed and be located at the cutting roller side Face when being set as the first face, slot formation when being set as the second face positioned at the face of the anvil roller side,

The bending machining mechanism has as the winder keeps the precursor with slot curved to first surface side Roller and make the precursor with slot to the curved roller in the second surface side, two rollers as the winder are that surface is flat respectively Sliding plain-barreled roll,

The absorber has the stepped construction including multiple absorbed layers,

In the slot formation process, multiple pressure contact portions for being crimped of interlayers that absorb are formed as the pressing part,

In the softness process, the precursor with slot is deformed into the shape one for being bonded the circumferential surface of the winder on one side While making at least one engaged via the slot formation process in the pressure contact portion absorb interlayer quilt as a result, by conveying It peels off and separates, and make the pressure contact portion softness.

2. the manufacturing method of absorber according to claim 1, it is characterised in that:

The softness process has according to following sequences is deformed into the precursor with slot to first surface side protrusion Section be arc-shaped shape process and make the precursor with slot be deformed into second surface side protrude section For the process of the shape of arc-shaped.

3. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

In at least one described plain-barreled roll, the cornerite of the precursor with slot is 10 degree or more 180 degrees or less.

4. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The winder has multiple suction holes on surface, and the precursor with slot is passed through attracting holding in the surface on one side On one side deform the precursor with slot.

5. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The bending machining mechanism has multiple winders, and the precursor with slot is made to bend to section S shape.

6. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The absorber precursor or the absorber have the stepped construction for being laminated with multi-layer, absorbing piece, are being configured at absorbability The position of the excretory portion counterpart of article has multi-layer portion, which is that the stacking number ratio of the absorbent sheet is located at around it Part more than part.

7. the manufacturing method of absorber according to claim 6, it is characterised in that:

The thickness of the multi-layer portion is greater than the thickness of part located around it, opposite in the excretory portion for being configured at absorbent commodity The position in portion forms the positive dough sheet side protrusion outstanding of oriented absorbent commodity.

8. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The absorber is only made of the stepped construction of absorbent sheet.

9. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The absorber precursor or the absorber include the absorbent sheet of single or multi-layer structure, the absorbent sheet be by Spread superabsorbent polymer on wet paper or non-woven fabrics, be overlapped paper or non-woven fabrics on it, later drying integrated and obtain It arrives.

10. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The slot is formed as extending on the conveying direction of the absorber precursor linear.

11. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

It is more at the position for the excretory portion counterpart for being configured at absorbent commodity in the absorber precursor or the absorber It is a to be formed along longitudinal longitudinal slot of the absorbent commodity with the state dispersed.

12. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

In absorber precursor or the absorber, along longitudinal longitudinal slot of absorbent commodity in the vertical of absorbent commodity It is formed to on laterally the two directions with the state of dispersion.

13. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

In the slot formation process, formed and cutting the absorber precursor to its thickness direction along absorbability Longitudinal longitudinal slot of article, longitudinal direction slot perforation constitute the stepped construction of the absorbent sheet of the absorber.

14. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

Longitudinal multiple longitudinal slots along absorbent commodity are formed in the absorber precursor or the absorber, respectively Longitudinal slot independently, whole region of the non-slot portion between adjacent longitudinal slot, around longitudinal slot It is surrounded by non-slot portion.

15. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The absorber in the rear part for being located at the excretory portion counterpart position rearward than absorbent commodity, have with Multiple rear slots that mode on the crossed longitudinally direction of absorbent commodity with length direction extends.

16. the manufacturing method of absorber according to claim 15, it is characterised in that:

The rear slot has the position phase of the position and the both ends of the length direction of the central portion of the length direction of slot Than the plan view shape being convexly curved to the front part side of absorbent commodity.

17. the manufacturing method of absorber according to claim 15, it is characterised in that:

The rear slot absorbent commodity it is longitudinally spaced alternately formed it is multiple.

18. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The cutting edge has the first nose angle formed by two bevel edges in the position of its front end, in the position than its front end Setting has the second nose angle formed by the other bevel edge being connected with each bevel edge slightly by the position of base portion, and first nose angle is big In second nose angle.

19. the manufacturing method of absorber according to claim 18, it is characterised in that:

First nose angle is 40 degree or more 100 degree or less.

20. the manufacturing method of absorber according to claim 18, it is characterised in that:

Second nose angle is less than first nose angle, and is 30 degree or more 90 degree or less.

21. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

Length of the slot on the conveying direction of the absorber precursor is 2mm or more 100mm or less.

22. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The radius of curvature of the winder be 4 times of length on the conveying direction of the absorber precursor of the slot with Under.

23. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The axle base of each roller of the winder is 4 of the length on the conveying direction of the absorber precursor of the slot Times or less.

24. the manufacturing method of absorber according to claim 1 or 2, it is characterised in that:

The absorber is the absorber of absorbent commodity.

25. the manufacturing method of absorber according to claim 24, it is characterised in that:

26. the manufacturing method of absorber according to claim 24, it is characterised in that:

In the slot formation process, in the positive dough sheet and back sheet of the upper and lower absorbent commodity for being configured at the absorber The slot is not formed.

27. a kind of manufacturing method of absorbent commodity, which includes the absorber of liquid retainability and is configured at Back sheet of the skin of the absorber with respect to the positive dough sheet of surface side and the opposite surface side of non-skin for being configured at the absorber, the absorption The manufacturing method of property article is characterized in that:

The absorber is manufactured by the manufacturing method of absorber described in any one of claim 1~26.