CN109843236A

CN109843236A - The manufacturing method and manufacturing device of the absorber of absorbent commodity

Info

Publication number: CN109843236A
Application number: CN201680090047.9A
Authority: CN
Inventors: 井上直人
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2019-06-04
Also published as: JP6171118B1; JPWO2018083774A1; WO2018083774A1

Abstract

The method for manufacturing the absorber (10) of liquid-absorbent, the absorber (10) is used for the absorbent commodity (1) with length direction, width direction and thickness direction, and has recess portion (10m) in the central portion of the width direction of the non-skin side surface (10sn) of thickness direction.Conveying operation is included, in the conveying operation, conveys the substrate (10K) of absorber in the conveying direction；And recess portion formation process, in the recess portion formation process, it will be pushed into component (51r) push-in from the non-skin side of thickness direction with the comparable position of the central portion by the non-skin side surface (10Ksn) of the substrate (10K) in absorber, to form recess portion (10m) on the substrate (10K) of absorber.In recess portion formation process, push-in based on push-in component (51r), the compression degree high compression portion (10p, 10p) higher than the compression degree of bottom (10mb) is formed in the position of the two sides of the width direction of the bottom (10mb) of recess portion (10m), and keeps the skin-side surface (10mbss) of the thickness direction of bottom (10mb) prominent to skin side compared to the skin-side surface (10nmss) of the thickness direction of the part (10nm) for not forming recess portion (10m) of the substrate (10K) of absorber.

Description

The manufacturing method and manufacturing device of the absorber of absorbent commodity

Technical field

The present invention relates to the manufacturing method of the absorber of the absorbent commodities such as sanitary napkin and manufacturing devices.

Background technique

As the absorbent commodity for absorbing the discharged liquids such as menses, it is known that sanitary napkin.The sanitary napkin has mutually just The length direction of friendship, width direction and thickness direction.In addition, the sanitary napkin liquid permeability top flat and opaque liquid egative film it Between with liquid-absorbent absorber.

Citation

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2012-157459

Summary of the invention

Subject to be solved by the invention

Here, an example as sanitary napkin 1', it is contemplated that following sanitary napkin.That is, as shown in Figure 1A, in the sanitary napkin The central portion of the width direction of 1' is set with folding guide line LB' alongst, and sanitary napkin 1' is configured to as a result, Enough bendings in such a way that the skin side of the central portion of width direction to thickness direction is outstanding.

Therefore, in order to dress sanitary napkin 1', Figure 1A (is penetrated through with the front-rear direction of its length direction towards wearer 201 Paper direction) mode be fixed on underpants (not shown) after, when lifting the underpants to the crotch 201K of wearer 201, by In the effect of the hip stock clamping force of the inside towards width direction applied from the hip stock of wearer 201 etc., sanitary napkin 1' with The mode bending outstanding of the skin side of the central portion of the width direction of sanitary napkin 1' to thickness direction.Therefore, can make to skin Part abuts with the discharge ports 201He such as introitus and its nearby for the central portion of side width direction outstanding and its nearby part, by This, can reach good stickiness.

On the other hand, as an example for capableing of the method for bending sanitary napkin 1' in such a way, such as the diagrammatic sectional view of Figure 1B Shown in the upper figure of figure, it is contemplated that following method: in the central portion of the width direction of the non-skin side surface 10sn' of absorber 10', Alongst (direction of the paper of perforation Figure 1B) continuously or discretely forms the recess portion as above-mentioned folding guide line LB' 10m'.In addition, as shown in Figure 1 C, recess portion 10m', which is able to use, rotates mutual outer peripheral surface 51us', 51ds' opposite to each other Upper and lower a pair of rolls 51u', 51d' is formed.For example, the roller 51u' of a side is the roller of smooth outer peripheral surface 51us', but another party's It is convex in being continuously annularly provided in the entire circumferential direction of the direction of rotation of roller 51d' on the outer peripheral surface 51ds' of roller 51d' Portion 51r'.It therefore, can be in absorber if between making a pair of rolls 51u', 51d' of absorber 10' in this way The central portion of the width direction of the non-skin side surface 10sn' of 10' forms recess portion 10m' alongst.

In addition, in the case where the example, since the outer peripheral surface 51us' of the roller 51u' of a side is even surface, so recess portion The bottom 10mb' of 10m' is compressed with higher compression degree, and bottom 10mb' is thinning as a result,.Therefore, such as the following figure institute of Figure 1B Show, absorber 10' can be in bottom 10mb' promptly bending.

But due to as shown in Figure 1 C with the bottom 10mb' of relatively high compression degree compression recess portion 10m', the bottom Portion 10mb' is also hardened, and about this point, the skin-side surface 10mbss' of bottom 10mb' is and the discharge ports such as introitus 201He and its part that nearby part abuts.Therefore, when bottom 10mb' overvulcanization, the wearing of wearer 201 can be generated The problem of skin feel when sanitary napkin 1' is deteriorated.

The present invention makes in view of the above existing problems, and its object is to by the non-skin side surface of absorber The central portion of width direction forms recess portion, thus absorber bending and on inhibiting in such a way that the central portion is outstanding to skin side State the hardening of the bottom of recess portion.

Means for solving the problems

Main inventive for reaching above-mentioned purpose is a kind of manufacturing method of the absorber of absorbent commodity, manufactures liquid The absorber of absorbability, the absorber is used for the absorbent commodity with length direction, width direction and thickness direction, described Absorber has recess portion in the central portion of the width direction of the non-skin side surface of the thickness direction, which is characterized in that The manufacturing method includes

Conveying operation conveys the substrate of the absorber in the conveying operation in the conveying direction；And

Recess portion formation process passes through the non-skin of the substrate in the absorber in the recess portion formation process Side surface will be pushed into component push-in from the non-skin side of the thickness direction with the comparable position of the central portion, thus in institute It states and forms the recess portion on the substrate of absorber, in the recess portion formation process, based on the push-in of the push-in component, in institute The position for stating the two sides of the width direction of the bottom of recess portion forms high higher than the compression degree of the bottom of compression degree Compression unit, and the skin-side surface of the thickness direction of the bottom is made not form institute compared to the substrate of the absorber The skin-side surface for stating the thickness direction of the part of recess portion is prominent to skin side.

In addition, a kind of manufacturing device of the absorber of absorbent commodity, manufactures the absorber of liquid-absorbent, the absorption Body is used for the absorbent commodity with length direction, width direction and thickness direction, and the absorber is in the thickness direction The central portion of the width direction of non-skin side surface has recess portion, which is characterized in that the manufacturing device includes

Conveying device, the conveying device convey the substrate of the absorber in the conveying direction；And

Recess portion forms device, and the recess portion forms the non-skin side surface of the device by the substrate in the absorber With the comparable position of the central portion from the non-skin side of the thickness direction will be pushed into component push-in, thus in the absorption The recess portion is formed on the substrate of body,

The recess portion forms push-in of the device based on the push-in component, the width direction in the bottom of the recess portion The positions of two sides form the compression degree high compression portion higher than the compression degree of the bottom, and make the described of the bottom The thickness direction of the skin-side surface of thickness direction compared to the part for not forming the recess portion of the substrate of the absorber Skin-side surface it is prominent to skin side.

About other features of the invention, will be defined by the record of this specification and attached drawing.

The effect of invention

According to the present invention, recess portion is formed by the central portion of the width direction in the non-skin side surface of absorber, thus Can make absorber by the central portion to skin side it is outstanding in a manner of bending and the hardening for the bottom for inhibiting above-mentioned recess portion.

Detailed description of the invention

Figure 1A is when showing the crotch 201K that sanitary napkin 1' is worn on to wearer 201, based on being alongst arranged The central portion of width direction folding guide line LB, sanitary napkin 1' with the central portion of the width direction of sanitary napkin 1' to thickness Spend the skeleton diagram of the situation of the skin side mode bending outstanding in direction.

Figure 1B be as the folding guide line LB for capableing of bending sanitary napkin 1' an example absorber 10' non-skin side table The central portion of the width direction of face 10sn' forms the explanatory diagram of the example of recess portion 10m'.

Fig. 1 C is the explanatory diagram that the example of recess portion 10m' is formed with upper and lower a pair of rolls 51u', 51d'.

Fig. 2 is the approximate vertical view of the sanitary napkin 1 from the skin side of thickness direction.

Fig. 3 is the approximate vertical view of the sanitary napkin 1 from the non-skin side of thickness direction.

Fig. 4 is with the IV-IV in Fig. 2 to the approximate decomposition map depending on showing.

Fig. 5 is the approximate vertical view of the absorber 10 from the non-skin side of thickness direction.

Fig. 6 A and Fig. 6 B are with the VI-VI in Fig. 2 to the schematic diagram of the situation depending on showing 10 bending of absorber.

Fig. 7 A is the explanatory diagram of recess portion 10m, is the portion the VII enlarged drawing in Fig. 6 A, and Fig. 7 B is shown with recess portion 10m The skeleton diagram of the situation of 10 bending of absorber.

Fig. 8 is the manufacturing device 30 of the absorber 10 as the present embodiment of a part of the production line of sanitary napkin 1 Outline side view.

Fig. 9 A is the outline side view that recess portion forms device 50, and Fig. 9 B is the general principal view of the B-B direction view in Fig. 9 A.

Figure 10 is outline enlarged drawing of the X-X in Fig. 9 A to view.

Figure 11 A is the explanatory diagram that the failure generated is possible to after forming recess portion 10m on the substrate 10K of absorber, Figure 11 B Being can be by the failure prevention in the explanatory diagram of the shape of the substrate 10K of the absorber of possible trouble.

Figure 12 is above-mentioned failure and the method for shape that the substrate 10K of absorber can be changed to Figure 11 B in order to prevent Explanatory diagram, be the approximate vertical view of the substrate 10K of absorber viewed from above, Figure 12 B is the B-B direction view in Figure 12 A.

Figure 13 is the explanatory diagram of the manufacturing device 30a of the absorber 10 of modified embodiment of the present embodiment.

Figure 14 is formed at another explanatory diagram of the recess portion 10m of absorber 10, is the absorption from non-skin side The approximate vertical view of body 10.

Figure 15 is that the top surface 51rt for showing flank 51r in the state that flank 51r maximum is pushed into groove portion 51m does not have It is inserted into the schematic sectional view of the example in groove portion 51m.

Specific embodiment

According to the record of this specification and attached drawing, item below can be at least specified.

A kind of manufacturing method of the absorber of absorbent commodity, manufactures the absorber of liquid-absorbent, and the absorber is used In the absorbent commodity with length direction, width direction and thickness direction, non-skin of the absorber in the thickness direction The central portion of the width direction of skin side surface has recess portion, which is characterized in that the manufacturing method includes

According to the manufacturing method of the absorber of such absorbent commodity, absorber can be made with the central portion of width direction To the promptly bending of skin side mode outstanding and inhibit recess portion bottom hardening.Details is as follows.

Firstly, being respectively formed with high higher than the bottom of recess portion of compression degree in the position of the two sides of the width direction of recess portion Compression unit.Therefore, absorber can be in the promptly bending of each high compression portion, and absorber can be with width direction on the whole as a result, Central portion to the promptly bending of skin side mode outstanding.In addition, making the skin of the bottom of recess portion when component push-in will be pushed into Skin side surface is prominent to skin side compared to the skin-side surface of the part for not forming recess portion of the substrate of absorber.Therefore, can The compression degree for mitigating bottom, the hardening that thereby, it is possible to inhibit to be possible to the bottom generated in the higher situation of compression degree.

Preferably, in the manufacturing method of the absorber of the absorbent commodity,

In the recess portion formation process, by the skin for making the retaining surface of holding member and the substrate of the absorber Skin side surface abuts, so that the holding member supports the substrate of the absorber, and pushing away with described in the retaining surface Enter the opposite position of component and be provided with the pit part for being inserted into the push-in component,

By being pushed into the push-in component to the pit part, to be formed on the substrate of the absorber described recessed Portion.

According to the manufacturing method of the absorber of such absorbent commodity, when that will be pushed into component and be pushed into pit part, benefit With the portion including each side of each side of the width direction of pit part and push-in component to compress the width direction comprising recess portion Point.Therefore, above-mentioned high compression portion can be rapidly formed in the position of the two sides of the width direction of the bottom of recess portion.

In addition, will be pushed into component to skin side be pushed into when, the above-mentioned pit based on the retaining surface for being set to holding member The bottom in portion, above-mentioned recess portion can be promptly mobile to skin side.Moreover, thereby, it is possible to make the skin-side surface phase of the bottom Skin-side surface than the part for not forming recess portion of the substrate of absorber is promptly prominent to skin side.Therefore, it can reduce The compression degree of the bottom is able to suppress its hardening.

In the recess portion formation process, Xiang Suoshu skin side be pushed into the push-in component until the push-in component extremely Few a part is inserted into the pit part.

According to the manufacturing method of the absorber of such absorbent commodity, push-in component is pushed into skin side, until pushing away At least part for entering component is inserted into pit part.Therefore, each side of the width direction comprising recess portion can be further increased Compression degree when part including face is compressed by each side of the width direction of pit part with push-in component.Moreover, its result It is the compression degree that can be improved in the above-mentioned high compression portion of the position formation of the two sides of the width direction of the bottom of recess portion, by This, absorber can be in the high compression portion reliably bending.

Push-in component and the component of at least one party in the holding member described in heating element heats.

According to the manufacturing method of the absorber of such absorbent commodity, in above-mentioned push-in component and holding member at least The component of one side is heated.Therefore, it after push-in component leaves from the substrate of above-mentioned absorber, is also easy to maintain the shape of above-mentioned recess portion Shape significantly loses shape without will lead to the shape of above-mentioned recess portion from the shape of push-in component.

In the recess portion formation process, using the width direction of the pit part two sides corner in the suction The skin-side surface of the substrate of acceptor forms recessed portion.

According to the manufacturing method of the absorber of such absorbent commodity, the formation of the substrate of absorber has above-mentioned recessed portion Part compared with other parts be easy bending.Therefore, the part for being formed with the recessed portion can contribute effectively to absorber By the central portion of width direction to skin side it is outstanding in a manner of bending.

The absorber has the skin lateral plate of absorbent core with the skin side configured in the absorbent core,

The manufacturing method has the configuration of the substrate sheets of the skin lateral plate described in the substrate of the absorbent core The skin lateral plate arrangement step of skin side,

In the recess portion formation process, relative to the absorbability for being configured with the skin lateral plate in the skin side The substrate of core is pushed into the push-in component.

According to the manufacturing method of the absorber of such absorbent commodity, due to being configured in the substrate sheets of skin lateral plate It states and forms recess portion in the state of the substrate of absorbent core, so becoming the shape for also essentially forming recess portion in the substrate sheets State.Therefore, the substrate sheets of skin lateral plate are configured at the absorbent core with after the formation recess portion on the substrate of the absorbent core The case where substrate, is compared, and is also formed with above-mentioned recess portion correspondingly in the substrate sheets, can manufacture the absorber of easy bending.

The absorbent commodity has configuration in the skin side of the absorber and forms the absorbent commodity The top flat of skin-side surface,

The position for carrying out joint portion formation process is located at the conveying side compared to the position for carrying out the recess portion formation process To downstream side,

In the joint portion formation process, by the substrate relative to the absorber for being formed with the recess portion in institute The substrate sheets that skin side configures the top flat are stated, and are pushed into component from the skin side of substrate sheets push-in second, from And it is formed in the partial shrinkage that the second push-in component is pushed by the substrate of the absorber and the substrate chip bonding Joint portion.

According to the manufacturing method of the absorber of such absorbent commodity, do not formed in the substrate sheets of top flat above-mentioned recessed Portion.Therefore, because there is no the parts hardened by the formation of above-mentioned recess portion in the substrate sheets, so can be by the skin of top flat Skin sense of touch maintains good state.Therefore, the absorbent commodity with the good skin-side surface of skin feel can be manufactured.

The position for carrying out joint portion formation process is located at the conveying side compared to the position for carrying out the recess portion formation process To upstream side,

In the joint portion formation process, by the substrate of the absorber relative to the not formed recess portion in institute The substrate sheets that skin side configures the top flat are stated, and are pushed into component from the skin side of substrate sheets push-in second, from And it is formed in the partial shrinkage that the second push-in component is pushed by the substrate of the absorber and the substrate chip bonding Joint portion,

In the recess portion formation process, relative to the absorber for being bonded to the substrate sheets via the joint portion Substrate be pushed into the push-in component from the non-skin side.

According to the manufacturing method of the absorber of such absorbent commodity, since the substrate sheets in top flat are configured at above-mentioned suction Recess portion is formed in the state of the substrate of acceptor, so becoming the state for also essentially forming recess portion in the substrate sheets.Therefore, Compared with the case where substrate sheets of top flat are configured at the substrate of the absorber after forming recess portion on the substrate in the absorber, with It is also formed with above-mentioned recess portion in the substrate sheets correspondingly, the absorber of easy bending can be manufactured.

The substrate of the absorber is conveyed using the length direction as the conveying direction,

The manufacturing method has one side to be formed with the substrate of the absorber of the recess portion and the width direction The substrate that parallel mode limits the absorber conveys the conveying operation of the substrate of the absorber on one side.

According to the manufacturing method of the absorber of such absorbent commodity, can will have in the conveying of the substrate of absorber Issuable following failure prevention is in possible trouble.That is, after forming recess portion, along with the formation of the recess portion, the substrate of absorber Be easy by the central portion of width direction to skin side it is outstanding in a manner of be bent into substantially V-shaped, in the shape deformed in such a way When conveying the substrate of the absorber under state, it is possible to produce the substrate of the absorber is stuck in other devices along conveying direction configuration First-class failure.But about this point, according to above-mentioned manufacturing method, on one side to be formed with the substrate of the absorber of recess portion and wide The parallel mode in degree direction limits the substrate of the absorber, conveys the substrate of the absorber on one side.It therefore, can be by the failure Generation is preventive from possible trouble, as a result, can be realized the stabilisation of the manufacture of absorber.

In the outer peripheral surface of the first rotary body rotated along the conveying direction, in the direction of rotation of first rotary body Entire circumferential direction on it is continuous and be protrusively provided flank as the push-in component,

The holding member is the outer peripheral surface phase for making the outer peripheral surface as the retaining surface with first rotary body To and along conveying direction rotation the second rotary body,

In the outer peripheral surface, it has been continuously provided in the entire circumferential direction of the direction of rotation of second rotary body as institute State the groove portion of pit part.

According to the manufacturing method of the absorber of such absorbent commodity, above-mentioned recess portion can be formed as in absorber Continuous channel-shaped in the whole length of length direction.Therefore, it can manufacture with the central portion of the width direction of absorber to skin Side mode outstanding reliably absorber as bending.

According to the manufacturing device of the absorber of such absorbent commodity, the case where capable of obtaining with above-mentioned manufacturing method, is same The function and effect of sample.

===present embodiment===

The manufacturing method and manufacturing device 30 of the absorber 10 of the absorbent commodity of present embodiment are for manufacturing as suction The sanitary napkin 1 of an example of the property received article.

<<<about sanitary napkin 1>>>

Fig. 2 to Fig. 6 B is the explanatory diagram of sanitary napkin 1.Fig. 2 is the sanitary napkin 1 from the skin side of thickness direction Approximate vertical view, Fig. 3 is the approximate vertical view of the sanitary napkin 1 from the non-skin side of thickness direction.In addition, Fig. 4 be with IV-IV in Fig. 2 is to the approximate decomposition map depending on showing.Moreover, Fig. 5 is the absorber 10 from the non-skin side of thickness direction Approximate vertical view.In addition, Fig. 6 A and Fig. 6 B are with the VI-VI in Fig. 2 to the schematic diagram of the situation depending on showing 10 bending of absorber.

As shown in Figures 2 and 4, sanitary napkin 1 be have length direction, width direction and thickness direction vertical view in longitudinal The flat member of shape.In addition, being laminated with transparent liquid in order to non-skin side from the skin side of thickness direction in the sanitary napkin 1 Top flat 22, the absorber 10 of liquid-absorbent and the egative film 23 of opaque liquid of property.Moreover, above-mentioned each component 22,10,23 is distinguished It is engaged with bonding agents such as hot-melt adhesives with adjacent component in a thickness direction.In addition, the application pattern as the bonding agent, Ω pattern, spiral pattern, band pattern etc. can be illustrated, other bonding agents occurred below are similarly such.In addition, with Under, also it will be known as " front side " with the comparable direction of the veutro of wearer 201 in the longitudinal direction, also by the back with wearer 201 The comparable direction in side is known as " rear side ".

As shown in Fig. 2, the planar dimension of top flat 22 and egative film 23 is bigger than the planar dimension of absorber 10.Therefore, the two Outer peripheral edge portion 22e, 23e (referring to the part of dot pattern in Fig. 2) of piece 22,23 is outer from absorber 10 to length direction respectively Side and the foreign side of width direction are prominent.Moreover, by the way that outer peripheral edge portion 22e, 23e is engaged with each other with bonding or welding mode, To keep absorber 10 between the two piece 22,23.

In addition, in this example embodiment, the flat shape of two pieces 22,23 is mutually the same.Moreover, the length of two pieces 22,23 The substantially central portion in direction is in the two sides of width direction shape outstanding, and part 22w, 23w of the shape outstanding are used as will Sanitary napkin 1 loads and so-called alar part 1w, the 1w used when being fixed on underpants (not shown) is functioned.That is, such as Fig. 3 and Fig. 4 institute Show, on egative film 23, in the non-skin side surface of part 23w corresponding with each alar part 1w, with bonding agent appropriate in substantially square Shape it is formed with the adhesive portion 24w for sanitary napkin 1 to be fixed on to underpants.In addition, the wing in the non-skin side surface of egative film 23 Part 23c between portion 1w, 1w, it is also multiple same in being zonally formed with alongst with bonding agent appropriate The adhesive portion 24c of purpose.But the configuration pattern of adhesive portion 24w, 24c is without being limited thereto.

The example of raw material as top flat 22 can enumerate the non-woven fabrics appropriate such as hot-wind nonwoven cloth, in this example embodiment, Use hot-wind nonwoven cloth.It is however not limited to this.That is, as long as the soft piece of liquid permeability, also can be used other pieces. In addition, the example of the raw material as egative film 23, can enumerate the resin films appropriate such as polyethylene (PE), in this example embodiment, Use PE film.It is however not limited to this.That is, as long as the soft piece of opaque liquid, also can be used other pieces.

In addition, as shown in Fig. 2, top flat 22 skin-side surface, be formed with multiple compression unit E, E ... from skin side, by This, top flat 22 is compressed in a thickness direction together with absorber 10 and is securely engaged simultaneously integrated.Moreover, in the example In, as compression unit E, there are two types of compression unit EL, ED for formation.The compression unit E of one side be linear compression unit EL (hereinafter, Referred to as threadiness compression unit EL).Moreover, multiple threadiness compression unit EL, EL ... embark on journey landform along the outer peripheral edge portion of absorber 10 At as a result, on the whole in longer in the longitudinal direction substantially a ring-shaped.On the other hand, the compression unit E of another party is dotted pressure Contracting portion ED (hereinafter also referred to as dotted compression unit ED).Moreover, dotted compression unit ED, the ED ... are discretely formed in by above-mentioned more In the region AEL being substantially closed that a threadiness compression unit EL, EL ... are divided on top flat 22.In addition, in this example embodiment, it is each dotted The flat shape of compression unit ED is the circle of diameter 1mm, in addition, the configuration pattern of dotted compression unit ED, the ED ... are set as sawtooth Pattern is configured, but not limited to this.Furthermore, it can also be not provided in these dotted compression unit ED and linear compression unit EL One or both.

As shown in figure 5, absorber 10, which is included, is configured to absorbent core made of regulation shape for liquid-absorbent raw material 11, the skin lateral plate 12 that keeps flat shape roughly the same with the core 11 to cover the skin-side surface of the core 11 and in order to The non-skin lateral plate 13 for covering the core 11 from non-skin side surface and keeping flat shape roughly the same with the core 11.Moreover, such as Fig. 4 Shown, each 12,13 simultaneously integrated with the bonding agents such as hot-melt adhesive and the engagement of absorbent core 11 respectively, as a result, each 12,13 The unwanted deformation such as prevent the so-called fold of absorbent core 11 or lose shape.

Liquidabsorbing fibres and liquid absorption of the absorbent core 11 for example as an example of liquid-absorbent raw material Both property shot-like particles with defined match ratio stipulated that base weight (g/m²) it is laminated for regulation shape and the component that shapes.In addition, As an example of regulation shape, can vertical view lengthwise longer on the length direction of sanitary napkin 1 as diagrammatic illustration 5 substantially Rectangular shape.It is however not limited to which this, is also possible to substantially hourglass-shaped etc. other shapes.In addition, former as liquid-absorbent is formed The liquidabsorbing fibres of material and an example of liquid-absorbent shot-like particle are able to illustrate paper pulp fiber and high-absorbable are poly- It closes object (SAP), here, using above-mentioned paper pulp fiber and superabsorbent polymer (SAP).It is however not limited to this.For example, can also To use pulp air-lay process non-woven fabrics (pulp airlaid nonwoven) (using paper pulp fiber as the non-woven fabrics of main material) etc. As liquid-absorbent raw material.

In addition, in this example embodiment, using tissue sheet as skin lateral plate 12, but as long as being the piece of liquid permeability and softness, no It is limited to this.I.e., it is possible to which using non-woven fabrics such as hot-wind nonwoven cloths furthermore, the skin lateral plate 12 can be omitted.In addition, In the example, non-skin lateral plate 13 also uses tissue sheet, without being limited thereto but as long as being soft piece.I.e., it is possible to (be spun using SMS Viscous/meltblown/spunbonded) non-woven fabrics such as non-woven fabrics furthermore can also omit the non-skin lateral plate 13.

As shown in figure 5, also compressing the compression unit ED10 for being formed and having a shape from non-skin side on such absorber 10 (hereinafter also referred to as dotted compression unit ED10).That is, in this example embodiment, since absorber 10 has skin lateral plate 12, absorbent core 11 and non-skin lateral plate 13, so by compressing this three together in a thickness direction, to form above-mentioned compression unit ED10.And And rigidity improves as a result, as a result, being able to suppress the unwanted deformation such as fold.In addition, in this example embodiment, compression unit The flat shape of ED10 is the circle of diameter 1.2mm, in addition, the configuration pattern of the compression unit ED10, ED10 ... are set as coxcomb plot Case, but not limited to this.

In addition, as shown in Fig. 5 and Fig. 6 A, in the center of the width direction of the non-skin side surface 10sn of the absorber 10 Portion is formed in the form of the channel-shaped of straight line alongst and in the whole length of the length direction as folding The recess portion 10m of folded guide line LB.Moreover, as a result, as shown in Figure 6B, with the central portion of width direction to the skin side of thickness direction Prominent and bending mode guides the absorber 10.

Fig. 7 A is the explanatory diagram of recess portion 10m, is the portion the VII enlarged drawing in Fig. 6 A.Recess portion 10m is substantially in a manner described It is recessed to non-skin side surface and is formed.In addition, the skin-side surface 10mbss of the bottom 10mb of recess portion 10m compares absorber 10 The part 10nm (hereinafter also referred to as the not formed part 10nm of recess portion) for not forming recess portion 10m skin-side surface 10nmss to Skin side is prominent, and in the position of the two sides of the width direction of the bottom 10mb of recess portion 10m, forms useful ratio and form recess portion Be applied to when 10m above-mentioned bottom 10mb compression degree it is high compression degree compression made of high compression portion 10p, 10p (referring to yin The part of shadow decorative pattern).Moreover, being based on the difference of the compression degree, high compression portion 10p, 10p is thinner than bottom 10mb, as a result, the absorption Body 10 being capable of the promptly bending deformation at above-mentioned a pair of of high compression portion 10p, 10p.

Therefore, it in 201 wear sanitary napkins 1 as shown in Figure 1A of wearer, from the state of Fig. 7 A to the state of Fig. 7 B, absorbs The direction that body 10 promptly becomes smaller to the space S P of recess portion 10m at above-mentioned a pair of of high compression portion 10p, 10p is bent, that is to say, that The bending in such a way that non-skin side becomes mountain valley side, as a result, as shown in Figure 6B, the absorber 10 is on the whole in width direction The mode bending outstanding of the skin side of centre portion to thickness direction.Moreover, as a result, as shown in Figure 1A, sanitary napkin 1 can be in width It spends the central portion in direction and its nearby partially realizes the good patch to the discharge ports 201He such as introitus and its neighbouring part fitting Conjunction property.

In addition, referring to Fig. 7 A, as noted previously, as the skin-side surface 10mbss of the bottom 10mb of recess portion 10m is compared to suction The skin-side surface 10nmss of the not formed part 10nm of the recess portion of acceptor 10 is prominent to skin side, so can reduce in bottom The compression degree of 10mb.That is, passing through the non-skin side table of the substrate 10K from absorber such as 0 explanation referring to Fig.1 below Face 10Ksn is pushed into the flank 51r as push-in component to the skin side of thickness direction, to form above-mentioned recess portion in absorber 10 10m, here, the skin-side surface 10Kss of the substrate 10K of absorber is supported by retaining surface 51ds, the holding in the push-in Face 51ds has the groove portion 51m as pit part.In addition, groove portion 51m is formed in the position opposite with flank 51r.Therefore, exist When the push-in of flank 51r, the bottom 10mb of above-mentioned recess portion 10m can be mobile in a manner of promptly avoiding to skin side, as a result, It can reduce the compression degree of bottom 10mb.Moreover, thus, it is possible to inhibiting to be possible to produce in the higher situation of compression degree The hardening of raw bottom 10mb, as a result, wearer 201 can feel good skin in the wearing of the sanitary napkin 1 Sense of touch.

<<<production line about sanitary napkin 1>>>

Fig. 8 is the outline side view for showing a part of production line of the sanitary napkin 1.In the production line, initially generate Intermediate products 1m of the substrate 10K of absorber as sanitary napkin 1.Moreover, later with conveying device appropriate 90,90 ... along rule Fixed conveying direction conveys intermediate products 1m, in the conveying, conveying direction each position to intermediate products 1m implement with The processing appropriate such as joining process, punch process processing, the cutoff process of other pieces.Moreover, intermediate products 1m changes shape every time State, to finally manufacture the sanitary napkin 1 of the state of Fig. 2.

In addition, in this example embodiment, intermediate products 1m is conveyed with the mode of movement of so-called " longitudinal flow ", that is to say, that It is conveyed with the posture of the length direction of sanitary napkin 1 towards conveying direction.Therefore, it (is penetrated through by the direction orthogonal with conveying direction The direction of the paper of Fig. 8) be defined as " direction CD " in the case where, the width direction of sanitary napkin 1 generally toward the direction CD, and And the thickness direction direction direction orthogonal with conveying direction and the direction CD of sanitary napkin 1.In addition, in this example embodiment, the direction CD court To horizontal direction, but not limited to this.For example, it is also possible to be slightly tilted from horizontal direction.

On the other hand, the manufacturing method and manufacturing device 30 of the absorber 10 of present embodiment undertake the one of above-mentioned production line A process.That is, substantially manufacturing the absorber with recess portion 10m as described above in the manufacturing method and manufacturing device 30 10.In addition, manufacturing method is carried out using manufacturing device 30.Therefore, hereinafter, illustrating the manufacturing device 30.

As shown in Fig. 8, manufacturing device 30 is included with the substrate of continuous form generating absorber in the conveying direction Above-mentioned dotted compression unit is formed in substrate generating means 32 of the 10K as initial intermediate products 1m, the substrate 10K in absorber The dotted compression unit formation device 40 of ED10, the recess portion that above-mentioned recess portion 10m is formed on the substrate 10K of absorber form device 50, it cuts off the end 10Ked in the downstream side of the conveying direction of the substrate 10K of absorber and generates the substrate of the absorber of single sheet The cutter device 60 of 10K is formed in the state that the substrate sheets 22K of top flat to be configured to the substrate 10K of absorber of single sheet The dotted compression unit of dotted compression unit ED forms device 70 and the substrate sheets 22K of top flat is similarly being configured at single sheet The linear compression unit that linear compression unit EL is formed in the state of the substrate 10K of absorber forms device 80.In addition, in each device 32, between 40,50,60,70,80, configured with conveying devices 90,90 ... such as conveyer or conveying rollers.Moreover, the conveying fills Set the conveying for the substrate 10K that 90,90 ... are essentially available for absorber.

In addition, either carrying out the driven roller of rotation driving with driving sources such as motors, being also possible to not have about conveying roller There is the driven voller of driving source and driven rotation.In addition, about conveyer, either the upper of the endless belt for surrounding driving will be carried out Belt conveyor of the surface as the substrate 10K of conveyor surface conveying absorber, is also possible on one side with being set to above-mentioned conveyor surface Multiple air inlets absorption absorber the suction belt conveyor that conveys on one side of substrate 10K.

(1) substrate generating means 32

In substrate generating means 32, firstly, generating the substrate 10K of continuous form in the conveying direction as absorber Substrate 10K.That is, generating not formed recess portion 10m, dotted compression unit ED10, dotted compression unit ED and line as substrate 10K The non-individual body 10a of absorber made of multiple absorbers 10 of shape compression unit EL are continuous in the conveying direction.Therefore, the device 32 With the fine device 34 of product, in the product fibre device 34, generate multiple absorbent cores 11,11 ... it is continuous in the conveying direction made of The non-individual body 11a (substrate for being equivalent to absorbent core) of absorbent core.

It may be mentioned that in the following description, in the case where being only called " the substrate 10K of absorber ", substantially referring to The substrate 10K of the absorber of continuous form rather than the substrate 10K of the absorber of single sheet in the conveying direction.

As shown in Fig. 8, the fine device 34 of product, which has to rotate around the rotary shaft C35 towards the direction CD along conveying direction, drives Going barrel 35 and the supply pipes of the supply liquid-absorbents raw material such as paper pulp fiber is spread to the outer peripheral surface 35s of going barrel 35 Road 36.Moreover, specified position of the configuration of service 36 in the direction of rotation of going barrel 35.In addition, in the periphery of going barrel 35 Face 35s is formed with cricoid groove portion 35m along direction of rotation with constant groove width in the entire circumferential direction of the direction of rotation. Moreover, being provided in the entire circumferential direction of direction of rotation for adsorbing liquid-absorbent former material in the bottom surface 35mb of groove portion 35m Multiple air inlets (not shown) of material.

Therefore, as shown in figure 8, stacking gradually liquid absorption in the part of the position by service 36 of groove portion 35m Property raw material, generate the non-individual body 11a of continuous absorbent core in the conveying direction in groove portion 35m as a result,.Then, the company Continuous body 11a takes off the position for being equivalent to the lower end of going barrel 35 in a rotational direction as de-molding position Pout from groove portion 35m Mould.

On the other hand, as shown in Fig. 8, belt conveyor 90CV is configured in the lower section of de-molding position Pout.Then, Using belt conveyor 90CV, make conveying direction along the direction of rotation of going barrel 35, and with continuous in the conveying direction Serialgram form conveying skin lateral plate 12 substrate sheets 12K.In addition, in de-molding position Pout, as the base Bonding agent is applied on the non-skin side surface of the upper surface of material piece 12K to finish.Therefore, the absorbent core demoulded from going barrel 35 Non-individual body 11a is positioned on the upper surface of substrate sheets 12K of the skin lateral plate, at the same time with bonding agent and substrate sheets 12K It engages and integrated (being equivalent to skin lateral plate arrangement step).After moreover, the non-individual body 11a and skin lateral plate of absorbent core Substrate sheets 12K be integrally formed and to the downstream of conveying direction convey.

In addition, by the top of the specified position P13K in the downstream side of conveying direction, being configured with compared to de-molding position Pout Conveying roller 90R.Then, using conveying roller 90R, non-skin lateral plate is conveyed in the form of continuous serialgram in the conveying direction 13 substrate sheets 13K, and substrate sheets 13K is in the conveying path of above-mentioned specified position P13K and the non-individual body 11a of absorbent core Diameter interflow.In addition, being applied in the skin-side surface of the lower surface as substrate sheets 13K in specified position P13K Bonding agent finishes.Therefore, the non-individual body 11a of absorbent core is covered from top by the substrate sheets 13K of the non-skin lateral plate, same with this When bonding agent and the substrate sheets 13K engagement and it is integrated.After moreover, the non-individual body 11a of absorbent core not only with skin side The substrate sheets 12K of piece is also integrally formed with the substrate sheets 13K of non-skin lateral plate, and is conveyed to the downstream of conveying direction.Moreover, By above step, the more of not formed recess portion 10m, dotted compression unit ED10, dotted compression unit ED and linear compression unit EL are generated Substrate 10K of the non-individual body 10a of absorber made of a absorber 10 is continuous in the conveying direction as absorber.Then, to Compared to the substrate that the dotted compression unit in the downstream that substrate generating means 32 are located at conveying direction forms the conveying of device 40 absorber 10K。

(2) dotted compression unit forms device 40

Dotted compression unit formation device 40, which has, carries out rotation drive along conveying direction around along the rotary shaft C41 in the direction CD Dynamic a pair of rolls 41u, 41d up and down.Here, the non-skin side surface phase of the outer peripheral surface of upper roller 41u and the substrate 10K of absorber To being provided with jagged configuration pattern corresponding with above-mentioned dotted compression unit ED10 multiple in the outer peripheral surface of upper roller 41u Protrusion (not shown).In addition, the outer peripheral surface of lower roll 41d and the skin-side surface are opposite, the outer peripheral surface of lower roll 41d is set as not having The even surface of protrusion or recess portion.Therefore, pass through above-mentioned upper roller 41u, lower roll 41d along conveying direction in the substrate 10K of absorber When each other, raised part is pushed into the non-skin side surface of substrate 10K, as a result, in the non-skin side table of substrate 10K Face forms above-mentioned dotted compression unit ED10.Then, to the downstream for being located at conveying direction compared to dotted compression unit formation device 40 The substrate 10K that recess portion forms the absorber that the conveying of device 50 is formed with the dotted compression unit ED10 (is equivalent to substrate conveying work Sequence).

(3) recess portion forms device 50

Fig. 9 A is the outline side view that recess portion forms device 50, and Fig. 9 B is the general principal view of the B-B direction view in Fig. 9 A.This Outside, in figures 9 b and 9, for the purpose for preventing figure from complicating, the substrate 10K of absorber not shown.In addition, Figure 10 is in Fig. 9 A Outline enlarged drawing of the X-X to view.In addition, the Figure 10 be for illustrate in a rotational direction upper roller 51u, lower roll 51d each other most The figure of the relative positional relationship of flank 51r and groove portion 51m at close position.

As shown in Fig. 9 A and Fig. 9 B, recess portion, which forms device 50, also to be had around the rotary shaft C51 along the direction CD along conveying Direction carries out a pair of rolls 51u, 51d up and down of rotation driving.Moreover, in the non-skin side surface of the substrate 10K with absorber The outer peripheral surface 51us of 10Ksn opposite upper roller 51u (being equivalent to the first rotary body), in the direction CD of the substrate 10K with absorber The comparable position of central portion, it is continuous in the entire circumferential direction of direction of rotation and be highlightedly annularly provided with and above-mentioned recess portion A flank 51r (being equivalent to push-in component) for the corresponding shape of 10m.In addition, lower roll 51d is as in the substrate to absorber 10K supports substrate 10K from below holding member when being pushed into the flank 51r of upper roller 51u functions, that is to say, that as The skin-side surface 10Kss of the outer peripheral surface 51ds and substrate 10K of the lower roll 51d of retaining surface are abutted, here, in the outer peripheral surface 51ds, in the position opposite with flank 51r, be continuously annularly formed in the entire circumferential direction of direction of rotation size be can It is inserted into a groove portion 51m (being equivalent to pit part) of flank 51r.Therefore, pass through in the substrate 10K of absorber along conveying direction When between above-mentioned upper roller 51u, lower roll 51d, as shown in Figure 10, to substrate 10K non-skin side surface 10Ksn swimmingly It is pushed into above-mentioned flank 51r, above-mentioned recess portion 10m is formed in the non-skin side surface 10Ksn of substrate 10K as a result, and (is equivalent to recess portion Formation process).Then, as shown in figure 8, it is defeated to the cutter device 60 for forming the downstream that device 50 is located at conveying direction compared to recess portion Send the substrate 10K for being formed with the absorber of recess portion 10m.

As shown in Figure 10, cross sectional shape (the flank 51r on the section orthogonal with direction of rotation of the flank 51r of upper roller 51u Shape) in substantially isosceles trapezoid.That is, flank 51r has the top surface 51rt parallel with the direction CD, the direction CD of 51rt in top surface Two sides be respectively provided with from the direction of the rotating radius of upper roller 51u inclination predetermined angular a pair of of side 51rs, 51rs.Moreover, top The size in the direction CD of face 51rt is less than at the position of the outer peripheral surface 51us of the upper roller 51u of the foundation position as flank 51r The size in the direction CD of flank 51r, the above-mentioned cross sectional shape of flank 51r is in towards the radius of turn side of upper roller 51u as a result, To outside and front end tapered shape that rib width narrows.

In addition, correspondingly, the cross sectional shape (slot on the section orthogonal with direction of rotation of the groove portion 51m of lower roll 51d The shape of portion 51m) also in substantially isosceles trapezoid.That is, groove portion 51m has the bottom surface 51mb parallel with the direction CD, in bottom surface 51mb The direction CD two sides be respectively provided with from the direction of the rotating radius of lower roll 51d inclination predetermined angular a pair of of side 51ms, 51ms. Moreover, the direction CD of the groove portion 51m at the position of outer peripheral surface 51ds of the size in the direction CD of bottom surface 51mb less than lower roll 51d Size, as a result, the above-mentioned cross sectional shape of groove portion 51m be in the direction of the rotating radius towards lower roll 51d inside and groove width The front end tapered shape to narrow.

Moreover, as shown in Fig. 10, when the flank 51r maximum of such cross sectional shape is pushed into groove portion 51m, at least The top surface 51rt (a part for being equivalent to push-in component) of flank 51r is inserted into groove portion 51m.In addition, being pushed into shape in the maximum Under state, the top surface 51rt of clearance C L2 between the side 51ms of the side 51rs and groove portion 51m of flank 51r less than flank 51r with Clearance C L1 between the bottom surface 51mb of groove portion 51m.

Therefore, when being pushed into flank 51r to the substrate 10K of absorber and forming recess portion 10m, than the top surface with flank 51r The high compression degree of the compression degree of the bottom 10mb of the recess portion 10m of 51rt push-in, compression substrate 10K's is located at flank 51r's Part 10p between side 51rs and the side 51ms of groove portion 51m.Then, compression degree is higher than the compression degree of bottom 10mb High compression portion 10p, 10p be respectively formed at recess portion 10m the direction CD two sides position, here, high compression portion 10p, 10p Difference based on compression degree and it is thinner than bottom 10mb.Therefore, when the substrate 10K of the absorber becomes absorber 10, such as Fig. 7 B Shown, which being capable of the promptly bending at each high compression portion 10p, 10p.Moreover, as a result, in wearer 201 as schemed When wear sanitary napkins 1 shown in 1A, absorber 10 can by the central portion of width direction on the whole to skin side it is outstanding in a manner of it is fast The bending of fast ground.

In addition, referring to Fig.1 0, as noted previously, as between the bottom surface 51mb of the top surface 51rt and groove portion 51m of flank 51r Ensure biggish clearance C L1, so it is based on above-mentioned biggish clearance C L1 when being pushed into flank 51r to the substrate 10K of absorber, The bottom 10mb of the recess portion 10m of substrate 10K is quickly removed to the bottom surface 51mb of groove portion 51m, and thereby, it is possible to make the bottom The recess portion that does not form recess portion 10m not formed part 10nm of the skin-side surface 10mbss of 10mb compared to the substrate 10K of absorber Skin-side surface 10nmss it is promptly prominent to skin side.Therefore, the compression degree of bottom 10mb, result be can reduce It is to be able to suppress the hardening that the bottom 10mb generated is possible in the higher situation of compression degree.

Moreover, in the example of the Fig. 8, as described above, the substrate sheets 12K in skin lateral plate is configured at above-mentioned absorbent core Non-individual body 11a in the state of formed recess portion 10m.Therefore, become and also essentially formed on the substrate sheets 12K of the skin lateral plate There is the state of recess portion 10m.Therefore, on the non-individual body 11a of the absorbent core formed recess portion 10m after the absorbent core company The case where configuring the substrate sheets 12K of skin lateral plate on continuous body 11a is compared, and is also formed with above-mentioned recess portion on substrate sheets 12K 10m correspondingly, can manufacture the absorber 10 of easy bending.

In addition, when being pushed into flank 51r to the substrate 10K of absorber, utilizing lower roll 51d's in the example of the Figure 10 Corner 51mc, 51mc of the two sides in the direction CD of groove portion 51m are (that is, the outer peripheral surface in groove portion 51m with lower roll 51d Part 51mc, 51mc of 51ds adjacent edge shape) substrate 10K skin-side surface 10Kss formed recessed portion 10Kh, 10Kh.Then, the part that the recessed portion 10Kh, 10Kh are formed on substrate 10K becomes so-called section defect portion, by This, is easy bending compared with other parts.Therefore, in the wearing of the sanitary napkin of Figure 1A 1, be formed with recessed portion 10Kh, The part of 10Kh can contribute effectively to absorber 10 by the central portion in the direction CD to skin side it is outstanding in a manner of bending.

Moreover, in this example embodiment, as shown in Fig. 9 A and Fig. 9 B, in the inside of upper roller 51u and lower roll 51d, respectively with each roller Rotary shaft C51, C51 of 51u, 51d are coaxially built-in with an example of rodlike cartridge heater 53,53 as heating component.And And by adjusting the amount of power (W) supplied to the heater 53, so as to adjust upper roller 51u flank 51r each side The temperature of each side 51ms of the groove portion 51m of 51rs and lower roll 51d, here, for example with the temperature of above-mentioned each side 51rs, 51ms Into 110 DEG C ± 30 DEG C of range, preferably 110 DEG C ± 20 DEG C of range, the mode of more preferable 110 DEG C ± 10 DEG C of range is heated Each roller 51u, 51d.

Therefore, because passing through when being pushed into flank 51r to the substrate 10K of absorber in flank 51r and groove portion 51m heating The push-in and part near the recess portion 10m that is formed, so being easy to retain the shape of flank 51r in the part.Moreover, its result Be, after flank 51r leaves from substrate 10K, can also maintain the shape of recess portion 10m without the shape from flank 51r compared with The earth loses shape.It is however not limited to this.That is, can be heated with cartridge type in the case where the shape maintenance effect can slightly decline The roller that device 53 either only heats in upper roller 51u and lower roll 51d, furthermore, can not also heat both sides roller 51u, 51d。

It is further preferred, that using the outer peripheral surface 51ds of lower roll 51d as the depth L51m (figure of the above-mentioned groove portion 51m of starting point 10) can for absorber substrate 10K thickness direction size average value more than.Moreover, if constituting as described above, it can Enough improve the mitigation effect of the compression degree of above-mentioned bottom 10mb.In addition, " the ruler of the thickness direction of substrate 10K said here Very little average value " refers to the position of the conveying direction of the flank 51r of upper roller 51u formation recess portion 10m at a distance of the upstream side of 50cm Position at substrate 10K thickness direction size average value.In addition, about the average value, such as the side CD can be used as Upward 10 points average (average value of the size of the thickness direction of position at randomly selected 10 in the cd direction) find out.

Moreover it is preferred that compared to above-mentioned recess portion formed the upper roller 51u of device 50, the position lower roll 51d and configure and conveying Suction belt conveyor can be used in the conveying device 90CV2 (Fig. 8) in the downstream side in direction.Moreover, if constituting as described above, It can be by following such failure prevention in possible trouble.That is, along with the formation of recess portion 10m, such as scheming after forming recess portion 10m Shown in 11A, the substrate 10K of absorber can using the central portion in the direction CD as width direction to skin side it is outstanding in a manner of bending At substantially V-shaped, when conveying the substrate 10K of the absorber in the state of deforming in such a way, it is possible to produce the absorption The substrate 10K of body be stuck in along conveying direction configuration other devices along etc. failures.For example, the cutter device 60 illustrated hereafter In roller gap between upper roller 61u, lower roll 61d, the substrate 10K for being bent into the absorber of substantially V-shaped is possible to block Firmly block.

But about this point, if forming the upper roller 51u of device 50, the downstream of lower roll 51d in recess portion in a manner described Side configuration suction belt conveyor 90CV2, then can utilize the absorption in the generation of the upper surface of the endless belt of conveyer 90CV2 Power makes the substrate 10K of the absorber be adsorbed in the upper surface of endless belt.Moreover, as a result, as shown in Figure 11 B, it can be on one side with shape It is limited at the substrate 10K for the absorber for the having recess portion 10m mode parallel with the direction CD and conveys substrate 10K on one side.Therefore, The generation of above-mentioned failure can be preventive from possible trouble.

But above-mentioned suction belt conveyor 90CV2 cannot be being used due to certain reasons, it has to using not having for example There is the conveying device of adsorption function come in the case where replacing above-mentioned suction belt conveyor 90CV2, by carrying out in the following manner Setting, so as to by above-mentioned failure prevention in possible trouble.Figure 12 A and Figure 12 B are its explanatory diagrams.In addition, Figure 12 A is seen from top The approximate vertical view of the substrate 10K of absorber is examined, Figure 12 B is the B-B direction view in Figure 12 A.

Firstly, a pair up and down is accordingly respectively configured in each end 10Ke, 10Ke with the direction CD of the substrate 10K of absorber Niproll 57u, 57d.Here, a pair of niproll 57u, 57d are configured to sandwich corresponding above-mentioned end 10Ke and drive up and down Dynamic rotation or driven rotation.In addition, each direction of rotation of a pair of niproll 57u, 57d is being contacted with above-mentioned end 10Ke up and down Position, respectively with conveying direction at regulation angle, θ towards the outside in the direction CD.Therefore, when above-mentioned niproll a pair of of up and down When the end 10Ke for the substrate 10K that 57u, 57d clamp absorber from up and down direction, end 10Ke is applied towards the direction CD The tension in outside, here, upper and lower a pair of niproll 57u, the 57d are arranged respectively at the two sides in the direction CD in a manner described.Therefore, The substrate 10K of absorber is pulled to the two sides in the direction CD, is bent into the substrate 10K of substantially V-shaped as Figure 11 A as a result, It is corrected in a manner of becoming the state parallel with the direction CD as shown in Figure 11 B.Moreover, as a result, can be by above-mentioned failure It is preventive from possible trouble.

(4) cutter device 60

As shown in figure 8, cutter device 60, which has, carries out rotation drive along conveying direction around along the rotary shaft C61 in the direction CD Dynamic a pair of rolls 61u, 61d up and down.Upper roller 61u is the cutting roller for having cutting edge 61c in outer peripheral surface, and lower roll 61d is in periphery The anvil roller 61d of face undertaking cutting edge 61c.In addition, forming device 50 to the cutter device 60 conveying absorber from above-mentioned recess portion Substrate 10K.That is, conveying is formed with the substrate 10K of the absorber of recess portion 10m and dotted compression unit ED10.Then, in absorber Substrate 10K along conveying direction by between above-mentioned upper roller 61u, lower roll 61d when, it is outer with cutting edge 61c and anvil roller 61d Circumferential surface clamps substrate 10K, cuts off the end 10Ked in the downstream side of the conveying direction of substrate 10K as a result,.Then, cut-off Part 10Ked is conveyed as the substrate 10K of the absorber of single sheet to the downstream of conveying direction.

In addition, the conveying is carried out using multiple conveying devices 90b, 90b ..., the multiple conveying device 90b, 90b ... exists Be arranged on the conveying direction in the downstream side of the conveying direction of cutter device 60, here, using these conveying devices 90b, The conveying speed value (mpm) of the conveying direction of the substrate 10K of the absorber of 90b ... conveying is set as than comprising above-mentioned cutter device The conveying speed value (mpm) of the conveying direction of the substrate 10K of absorber of 60 position at its position on the upstream side of internal ratio Big value.

Therefore, in the downstream side of cutter device 60, the difference of the conveying speed value, in the conveying direction adjacent absorption are based on Substrate 10K, 10K of body form clearance G each other, as a result, substrate 10K, 10K ... of each absorber become in conveying side Upwards with the state of product spacing P1 (the substantially same value of overall length size with the length direction of sanitary napkin 1) arrangement.Moreover, later with Product spacing P1 conveys the substrate 10K of each absorber.

On the other hand, the downstream close to cutter device 60 conveying device 90b downstream specified position P22K, setting There is the interflow position P22K of the substrate sheets 22K of top flat 22.That is, being configured with conveying roller 90R, benefit in the lower section of interflow position P22K With conveying roller 90R, the substrate sheets 22K of top flat, and the substrate are conveyed in the form of continuous serialgram in the conveying direction Piece 22K collaborates in the transport path of above-mentioned interflow position P22K and the substrate 10K of the absorber of single sheet.In addition, at the interflow Position P22K applies bonding agent on the non-skin side surface of the upper surface of the substrate sheets 22K as top flat and finishes.Cause This, the substrate 10K of the absorber of single sheet is covered by the substrate sheets 22K of the top flat from below, at the same time with bonding agent and top The substrate sheets 22K engagement and integration of piece.After moreover, the substrate 10K of the absorber of single sheet and the substrate sheets 22K of top flat It is integrally formed, and forms device 70 to the dotted compression unit in the downstream for being located at conveying direction and convey.

(5) dotted compression unit forms device 70

As shown in figure 8, dotted compression unit, which forms device 70, to be had around the rotary shaft C71 along the direction CD along conveying direction Carry out a pair of rolls 71u, 71d up and down of rotation driving.Here, the skin side of the substrate sheets 22K of the outer peripheral surface and top flat of lower roll 71d Surface is opposite, in the outer peripheral surface of lower roll 71d, is provided with jagged configuration pattern corresponding with above-mentioned dotted compression unit ED Multiple protrusions (being equivalent to the second push-in component, not shown).In addition, the base of the absorber of the outer peripheral surface and single sheet of upper roller 71u The non-skin side surface of material 10K is opposite, and the outer peripheral surface of upper roller 71u is set as the even surface of no protrusion or recess portion.Therefore, monolithic The substrate 10K of the absorber of shape along the substrate sheets 22K of conveying direction and top flat be integrally formed by above-mentioned upper roller 71u, under When between roller 71d, it is pushed into raised part to the skin-side surface of substrate sheets 22K, as a result, in the skin of substrate sheets 22K Skin side surface forms above-mentioned dotted compression unit ED.Then, in the dotted compression unit ED, the substrate sheets 22K of top flat and single sheet The substrate 10K of absorber is compressed in a thickness direction together and is securely engaged simultaneously integration.Therefore, the dotted compression unit ED Also it is functioned as the joint portion for being securely engaged the substrate 10K of the substrate sheets 22K of top flat and the absorber of single sheet, institute With, the formation which forms the dotted compression unit ED that device 70 carries out be equivalent to claim " joint portion is formed Process ".Then, monolithic made of being securely engaged with the substrate sheets 22K of top flat in such dotted compression unit ED and is integrated The substrate 10K of the absorber of shape is formed the linear compression that device 70 is located at the downstream of conveying direction to compared to dotted compression unit Portion forms device 80 and conveys.

(6) linear compression unit forms device 80

Linear compression unit formation device 80, which also has, to be rotated around along the rotary shaft C81 in the direction CD along conveying direction A pair of rolls 81u, 81d up and down of driving.Here, the skin-side surface phase of the outer peripheral surface of lower roll 81d and the substrate sheets 22K of top flat To being provided with multiple linear protrusions with configuration pattern corresponding with above-mentioned threadiness compression unit EL in the outer peripheral surface of lower roll 81d (being equivalent to the second push-in component, not shown).In addition, the substrate 10K's of the absorber of the outer peripheral surface and single sheet of upper roller 81u is non- Skin-side surface is opposite, and the outer peripheral surface of upper roller 81u is set as the even surface of no protrusion or recess portion.Therefore, the absorption of single sheet The substrate 10K of body along the substrate sheets 22K of conveying direction and top flat be integrally formed by above-mentioned upper roller 81u, lower roll 81d each other Between when, to the above-mentioned linear protrusion of the skin-side surface of substrate sheets 22K push-in, as a result, in the skin side table of substrate sheets 22K Face forms above-mentioned linear compression unit EL.Then, in the threadiness compression unit EL, the substrate sheets 22K of top flat and the absorber of single sheet Substrate 10K also compressed in a thickness direction together and be securely engaged and integration.Therefore, threadiness compression unit EL also makees Joint portion for the substrate 10K of the substrate sheets 22K of top flat and the absorber of single sheet to be securely engaged functions, so, The formation that the threadiness compression unit forms the linear compression unit EL that device 80 carries out is equivalent to " the joint portion formation work of claim Sequence ".Then, single sheet made of being securely engaged with the substrate sheets 22K of top flat in such threadiness compression unit EL and is integrated Absorber substrate 10K by the downstream of conveying direction convey.

Moreover, becoming by above step and being formed with recess portion 10m, dotted pressure on the substrate 10K of the absorber of single sheet The state of contracting portion ED10, dotted compression unit ED and linear compression unit EL, generate absorber 10 as a result,.It may be mentioned that above-mentioned point The sequence that shape compression unit forms the positional relationship on the conveying direction of device 70 and linear compression unit formation device 80 can be different, That is, can be opposite with said sequence.

===variation===

In the above-described embodiment, as shown in figure 8, matching forming device 50 than recess portion by the position in the downstream of conveying direction It is equipped with dotted compression unit and forms device 70 and linear compression unit formation device 80, still, as shown in figure 13, in the variation, Main difference is: forming device 70 and linear compression unit formation device 80 under conveying direction than dotted compression unit The position of trip forms device 50 configured with recess portion.Moreover, point in addition to this is substantially identical as above embodiment.Therefore, with Under, mainly illustrate the difference, identical appended drawing reference is marked to identical structure and the description thereof will be omitted.

In the variation of the Figure 13, a pair of rolls 51u, 51d up and down that recess portion forms device 50 is configured than dotted compression Portion forms 71u, 71d of a pair of rolls up and down of device 70 and linear compression unit forms a pair of rolls 81u, 81d up and down of device 80 by defeated Send the position in the downstream in direction.Therefore, in the variation, recess portion forms a pair of rolls 51u, 51d up and down of device 50 for benefit Single sheet made of being securely engaged with the substrate sheets 22K of top flat with dotted compression unit ED and threadiness compression unit EL and is integrated The substrate 10K of absorber carries out the formation of recess portion 10m.

Therefore, become the state that recess portion 10m is also essentially formed on the substrate sheets 22K of the top flat.Moreover, as a result, With above embodiment such situation, formed after recess portion 10m on the substrate 10K of absorber by top flat as shown in Figure 8 Substrate sheets 22K is configured at the case where substrate 10K of the absorber of single sheet and compares, and is also formed with on substrate sheets 22K It states recess portion 10m correspondingly, the absorber 10 of easy bending can be manufactured.

But above embodiment is compared with the variation, it is excellent in the following areas.That is, in the system of above embodiment In the case where making device 30, above-mentioned recess portion 10m is not formed on the substrate sheets 22K of top flat.Therefore, on substrate sheets 22K, no Therefore the skin feel of top flat 22 can be maintained good shape in the presence of the part hardened by the formation of above-mentioned recess portion 10m State.Therefore, the sanitary napkin 1 with the good skin-side surface of skin feel compared with above-mentioned variation can be manufactured.

===other embodiments===

Embodiments of the present invention are explained above, but above embodiment is used to keep understanding transfiguration of the invention easy, and It is non-of the invention for restrictively explaining.In addition, can become to the present invention in the range of without departing from spirit of the invention More, it improves, also, the present invention also includes its equivalent structure certainly.For example, being able to carry out deformation as shown below.

In the above-described embodiment, as shown in figure 5, on absorber 10, recess portion 10m is formed across the whole of length direction The channel-shaped of a length, but not limited to this.For example, as shown in figure 14, multiple recess portion 10m, 10m ... can be arranged in the longitudinal direction And it is discretely formed.In addition it is possible to use following such upper roller 51u, lower roll 51d form device 50 as recess portion to realize this The formation of the recess portion 10m of sample.Firstly, in the outer peripheral surface of lower roll 51d, in the same manner as above embodiment, in the whole of direction of rotation It is provided with groove portion 51m in a circumferential direction, but in the outer peripheral surface of upper roller 51u, point-blank arranges and configures in a rotational direction There is the protrusion (not shown) of island to replace above-mentioned cricoid flank 51r.In addition, the shape of the top surface of protrusion is either square Shape is also possible to parallelogram.

In the above-described embodiment, as shown in Figure 10, recess portion forms device 50 and flank 51r maximum is being pushed into groove portion The top surface 51rt of flank 51r is inserted into groove portion 51m in the state of in 51m, but not limited to this.As long as that is, the bottom of recess portion 10m The skin-side surface 10nmss skin-side surface 10mbss of 10mb part 10nm more not formed than the recess portion of the substrate 10K of absorber It is prominent, and high higher than the compression degree of bottom 10mb of compression degree is formed in the position of the two sides in the direction CD of recess portion 10m Compression unit 10p, 10p, it is without being limited thereto.For example, as shown in figure 15, the top surface 51rt of flank 51r can be not inserted into groove portion In 51m.But it can be improved high pressure when the top surface 51rt of flank 51r being inserted into groove portion 51m as shown in the example such as Figure 10 The compression degree of contracting portion 10p, it is advantageous to.

In the above-described embodiment, the substrate 10K of absorber is not conveyed continuously in the conveying direction stoppingly, as a result, The recess portion of Fig. 9 A forms device 50 and forms recess portion 10m on substrate 10K during the conveying of the substrate 10K of absorber.But It is without being limited thereto.For example, conveying substrate 10K can be interrupted in the conveying direction, and for the substrate 10K during conveying stopping Form recess portion 10m.It may be mentioned that in this case, forming device 50 as recess portion, following such device can be illustrated.

Firstly, the device 50 has configuration in the formpiston component (not shown) of the top of substrate 10K and configuration in substrate 10K Lower section former component (not shown).Moreover, being formed with shape corresponding with recess portion 10m in the lower surface of formpiston component protrusion Flank, in addition, being formed with size in the horizontal upper surface of former component in the position opposite with above-mentioned flank and being inserted into The groove portion of flank.Moreover, formpiston component is configured to back and forth move in the up-down direction using actuators appropriate such as hydraulic cylinders It is dynamic.

Therefore, during substrate 10K conveying stops, formpiston component declines to former component, as a result, to the substrate of absorber 10K is pushed into flank, to form recess portion 10m on substrate 10K.Then, after forming recess portion 10m, formpiston component rises And left from substrate 10K, then, after the conveying movement for having carried out specified amount in the conveying direction to substrate 10K, substrate 10K Conveying stop again, the above-mentioned formpiston component decline during the conveying stops.Then, by the way that the processing is repeated, thus Also recess portion 10m can be formed for the substrate 10K of the absorber of interruption conveying.

In the above-described embodiment, sanitary napkin 1 as diagrammatic illustration 2 is used as absorbent commodity, but not limited to this. For example, absorbent commodity is also possible to protection pad.

In the above-described embodiment, as shown in Fig. 2, the sanitary napkin 1 of an example as absorbent commodity has one To alar part 1w, 1w, but not limited to this.That is, can also there is no alar part 1w.

In the above-described embodiment, the fine device 34 of the product of Fig. 8 is used to form the absorbent core as the substrate of absorbent core 11 Non-individual body 11a, but not limited to this.For example, pulp air-lay process non-woven fabrics also can be used as the substrate.Moreover, at this In the case of, be arranged for from pulp air-lay process non-woven fabrics material volume (pulp air-lay process non-woven fabrics is wound as web-like and At volume) send out the carrying device successively (not shown) of the non-woven fabrics successively, alternatively, the above-mentioned fine device of product can be omitted 34。

In the above-described embodiment, as shown in figure 4, absorbent core 11 is by skin lateral plate 12 and non-skin lateral plate 13 this two Piece covering, but not limited to this.For example, as in the place explanation of above-mentioned sanitary napkin 1, it is convenient to omit skin lateral plate 12 and non-skin lateral plate 13 in one or both.In addition, in this case, in the manufacturing device 30 of the absorber 10 of Fig. 8, Omit one or both in the substrate sheets 12K of the skin lateral plate and substrate sheets 13K of non-skin lateral plate.

In the above-described embodiment, the dotted compression unit ED and threadiness pressure of Fig. 2 are provided in the skin-side surface of top flat 22 Contracting portion EL, but not limited to this.For example, as in the place explanation of above-mentioned sanitary napkin 1, it is convenient to omit dotted compression One or both in portion ED and linear compression unit EL.In addition, in this case, in the manufacturing device 30 of the absorber 10 of Fig. 8 In, omit that dotted compression unit forms device 70 and linear compression unit forms one or both in device 80.

The explanation of appended drawing reference

1 sanitary napkin (absorbent commodity), 1w alar part,

10 absorbers, the substrate of 10K absorber, the end 10Ke, the part 10Ked,

10Kh recessed portion,

10Ksn non-skin side surface, 10Kss skin-side surface,

10m recess portion, the bottom 10mb, the skin-side surface of the bottom 10mbss,

The non-individual body of 10a absorber,

The not formed part of 10nm recess portion (does not form the part of recess portion), 10nmss skin-side surface,

10sn non-skin side surface,

10p high compression portion,

11 absorbent cores, the non-individual body (substrate of absorbent core) of 11a absorbent core,

12 skin lateral plates, the substrate sheets of 12K skin lateral plate,

13 non-skin lateral plates, the substrate sheets of 13K non-skin lateral plate,

22 top flats, the substrate sheets of 22K top flat,

22e outer peripheral edge portion, the part 22w,

23 egative films, the part 23c, the part 23w,

24c adhesive portion, 24w adhesive portion,

The manufacturing device of 30 absorbers, the manufacturing device of 30a absorber,

32 substrate generating means,

The fine device of 34 products, 35 going barrels, 35s outer peripheral surface, 36 services,

40 dotted compression units formation devices, 41u upper roller, 41d lower roll,

50 recess portions formation device, 51u upper roller (the first rotary body), 51us outer peripheral surface,

51d lower roll (holding member, the second rotary body), 51ds outer peripheral surface (retaining surface),

51r flank (push-in component), the side 51rs, the top surface 51rt (a part),

51m groove portion (pit part), the side 51ms, the bottom surface 51mb,

The corner 51mc,

53 cartridge heaters (heating component),

57u niproll, 57d niproll,

60 cutter devices, 61u upper roller, 61c cutting edge,

61d lower roll,

70 dotted compression units formation devices, 71u upper roller, 71d lower roll,

80 linear compression units formation devices, 81u upper roller, 81d lower roll,

90 conveying devices, 90CV belt conveyor (conveying device),

90CV2 aspirates belt conveyor (conveying device),

90R conveying roller (conveying device), 90b conveying device,

201 wearers, the discharge port 201He, 201K crotch,

E compression unit (joint portion), the dotted compression unit of ED (joint portion), EL threadiness compression unit (joint portion),

The dotted compression unit of ED10,

LB folding guide line, the space SP, the gap G, the region AEL,

C35 rotary shaft, C41 rotary shaft, C51 rotary shaft,

C61 rotary shaft, C71 rotary shaft, C81 rotary shaft,

The gap CL1, the gap CL2,

The specified position P13K, P22K collaborate position (specified position), Pout de-molding position.

Claims

1. a kind of manufacturing method of the absorber of absorbent commodity, manufactures the absorber of liquid-absorbent, the absorber is used for Absorbent commodity with length direction, width direction and thickness direction, non-skin of the absorber in the thickness direction The central portion of the width direction of side surface has recess portion, which is characterized in that the manufacturing method includes

Recess portion formation process passes through the non-skin side table of the substrate in the absorber in the recess portion formation process Face will be pushed into component push-in from the non-skin side of the thickness direction with the comparable position of the central portion, thus in the suction The recess portion is formed on the substrate of acceptor,

In the recess portion formation process, based on the push-in of the push-in component, in the width side of the bottom of the recess portion To the positions of two sides form the compression degree high compression portion higher than the compression degree of the bottom, and make the institute of the bottom State the thickness side of the skin-side surface of thickness direction compared to the part for not forming the recess portion of the substrate of the absorber To skin-side surface it is prominent to skin side.

2. the manufacturing method of the absorber of absorbent commodity according to claim 1, which is characterized in that

In the recess portion formation process, by the skin side for making the retaining surface of holding member and the substrate of the absorber Surface abuts, so that the holding member supports the substrate of the absorber, and in the retaining surface and the push-in structure The opposite position of part is provided with the pit part for being inserted into the push-in component,

By being pushed into the push-in component to the pit part, to form the recess portion on the substrate of the absorber.

3. the manufacturing method of the absorber of absorbent commodity according to claim 2, which is characterized in that

In the recess portion formation process, Xiang Suoshu skin side is pushed into the push-in component until at least the one of the push-in component It is inserted partially into the pit part.

4. the manufacturing method of the absorber of absorbent commodity according to claim 2 or 3, which is characterized in that

5. the manufacturing method of the absorber of absorbent commodity according to any one of claim 2 to 4, which is characterized in that

In the recess portion formation process, using the width direction of the pit part two sides corner in the absorber Substrate the skin-side surface formed recessed portion.

6. the manufacturing method of the absorber of absorbent commodity according to any one of claim 1 to 5, which is characterized in that

The manufacturing method has the skin for the substrate configured the substrate sheets of the skin lateral plate in the absorbent core The skin lateral plate arrangement step of side,

In the recess portion formation process, relative in the absorbent core of the skin side configured with the skin lateral plate Substrate is pushed into the push-in component.

7. the manufacturing method of the absorber of absorbent commodity according to any one of claim 1 to 6, which is characterized in that

The absorbent commodity has configuration in the skin side of the absorber and forms the skin of the absorbent commodity The top flat of side surface,

The position for carrying out joint portion formation process is located at the conveying direction compared to the position for carrying out the recess portion formation process Downstream side,

In the joint portion formation process, by the substrate relative to the absorber for being formed with the recess portion in the skin Skin side configures the substrate sheets of the top flat, and from the skin side of substrate sheets push-in the second push-in component, thus The partial shrinkage that the second push-in component is pushed into is formed the engagement of the substrate of the absorber and the substrate chip bonding Portion.

8. the manufacturing method of the absorber of absorbent commodity according to any one of claim 1 to 6, which is characterized in that

The position for carrying out joint portion formation process is located at the conveying direction compared to the position for carrying out the recess portion formation process Upstream side,

In the joint portion formation process, by the substrate of the absorber relative to the not formed recess portion in the skin Skin side configures the substrate sheets of the top flat, and from the skin side of substrate sheets push-in the second push-in component, thus The partial shrinkage that the second push-in component is pushed into is formed the engagement of the substrate of the absorber and the substrate chip bonding Portion,

Base in the recess portion formation process, relative to the absorber for being bonded to the substrate sheets via the joint portion Material is pushed into the push-in component from the non-skin side.

9. the manufacturing method of the absorber of absorbent commodity according to any one of claim 1 to 8, which is characterized in that

The manufacturing method has one side parallel with the width direction with the substrate for being formed with the absorber of the recess portion Mode limit the absorber substrate convey on one side the absorber substrate conveying operation.

10. the manufacturing method of the absorber of the absorbent commodity according to any one of claim 2 to 5, which is characterized in that

In the outer peripheral surface of the first rotary body rotated along the conveying direction, in the whole of the direction of rotation of first rotary body It is continuous and be protrusively provided flank as the push-in component in a circumferential direction,

The holding member be make as the retaining surface outer peripheral surface and first rotary body the outer peripheral surface in opposite directions simultaneously And the second rotary body rotated along the conveying direction,

In the outer peripheral surface, it has been continuously provided in the entire circumferential direction of the direction of rotation of second rotary body as described recessed The groove portion in hole portion.

11. a kind of manufacturing device of the absorber of absorbent commodity, manufactures the absorber of liquid-absorbent, the absorber is used for Absorbent commodity with length direction, width direction and thickness direction, non-skin of the absorber in the thickness direction The central portion of the width direction of side surface has recess portion, which is characterized in that the manufacturing device includes

Recess portion forms device, the recess portion formed device by the non-skin side surface of the substrate in the absorber with The comparable position of central portion will be pushed into component push-in from the non-skin side of the thickness direction, thus in the absorber The recess portion is formed on substrate,

The recess portion forms push-in of the device based on the push-in component, the two of the width direction of the bottom of the recess portion The position of side forms the compression degree high compression portion higher than the compression degree of the bottom, and makes the thickness of the bottom Skin of the skin-side surface in direction compared to the thickness direction of the part for not forming the recess portion of the substrate of the absorber Skin side surface is prominent to skin side.