CN107889456A

CN107889456A - The manufacture method of absorbent commodity

Info

Publication number: CN107889456A
Application number: CN201680003357.2A
Authority: CN
Inventors: 河守良太
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2016-07-29
Filing date: 2016-07-29
Publication date: 2018-04-06
Anticipated expiration: 2036-07-29
Also published as: WO2017061165A1; JPWO2017061165A1; JP6139039B1; CN107889456B

Abstract

Absorbent commodity (1) uses the 1st possessed formed with multiple convex portions and is laminated in the composite sheet of the 2nd of the 1st.The manufacture method of absorbent commodity includes：The process for being heat-treated to the 1st (P12) and recovering volume；1st is supplied to the region (B1) that the 1st roller (52) and the 2nd roller (53) are engaged with each other, forms multiple convex portions, the process for forming multiple recesses in the 1st another face contacted with the 2nd roller in the face contacted with the 1st roller of the 1st；And in a manner of a face of the 1st contacts with the 1st roller and each convex portion turns into solid by the 1st and the 2nd roller separate and process that another face that the shape of multiple recesses has relaxed engages with a face of the 2nd (P13), forms composite sheet (P10).Now, the junction surface between the 1st and the 2nd is overlapped in the region corresponding with each convex portion in a thickness direction.

Description

The manufacture method of absorbent commodity

Technical field

The present invention relates to the manufacture method of absorbent commodity.

Background technology

Member of formation as absorbent commodity as sanitary napkin, disposable diaper, it is known to by multiple The composite sheet of composition.Composite sheet is for example used in the surface patch of absorbent commodity.As the characteristic required by composite sheet, exist Liquid permeability etc., but it is (slow also to there is flexibility with the characteristic required by the composite sheet of the skin contact of wearer as being particularly Punching property), skin sense of touch it is good etc..Therefore, in recent years, having used has on the base portion of general planar to the table away from the base portion The composite sheet of the convex portion of multiple raised line shapes or island that the direction in face protrudes.This has the composite sheet of the convex portion of raised line shape or island Convex portion it is soft, be easy to be bonded with skin face, be easy to feel that flexibility, skin sense of touch are good accordingly, there exist wearer Tendency.Especially, using can by heat treatment make volume recover bulk recovery piece, using volume recover phenomenon and shape Into in the composite sheet of convex portion, compared with other method, flexibility, skin sense of touch further improve, and therefore, are ground Study carefully.

Patent Document 1 discloses the manufacture method for the composite sheet for having used such bulk recovery piece.In composite sheet Manufacture method in, two pieces partly engage and form many junction surfaces, and in piece in addition to junction surface It is formed in part with convex portion.In the manufacture method, at least one in two panels uses the body that recover by heat treatment volume Restorative of product.Also, the engaging portion into a pair of tooth space rollers supplies one (bulk recovery piece) in two pieces.Connect down Come, make week face of the piece along a roller of a pair of rolls, directly keep the state and moved from engaging portion, so that two pieces In another be overlapped in a piece of mode and supplied, two chip bondings are formed into composite sheet.Now, will to manufacture volume extensive Anti- wire side during renaturation piece is set to the opposite face between the piece overlapping with wanting, and recovers before the engagement of two panels or to volume after engagement Property piece implement heat treatment.Now, a piece of (the bulk recovery piece) in two pieces is formed with convex portion, and two pieces are beyond convex portion Position engage.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2008-155602 publications

The content of the invention

Problems to be solved by the invention

But, the composite sheet being manufactured into by the manufacture method of patent document 1 has fibre density than surrounding in convex portion Obvious low space, the i.e. hollow area of fibre density.Wherein, hollow area is the gap formed between the 1st and the 2nd. In the case where hollow area is present in convex portion, if for example the composite sheet is used in the surface patch of absorbent commodity, drain Liquid to the surface of the skin side of surface patch is absorbed by convex portion, but in convex portion, the liquid can not move in hollow area, Region, the i.e. region of the near surface of convex portion around hollow area are moved.Therefore, in composite sheet, the liquid in convex portion The mobile route of body is limited by hollow area, and the liquid permeability of composite sheet is likely to decrease.In other words, there is convex portion to hinder liquid Hollow area as movement, therefore, in the phenomenon recovered using volume formed with the composite sheet of convex portion, flexibility, flesh Skin sense of touch is improved, but liquid permeability is likely to decrease.

It is an object of the invention to provide a kind of composite sheet for having used and having formed convex portion using the phenomenon that volume is recovered The manufacture method of absorbent commodity and be the absorbent commodity that can take into account the flexibility of composite sheet, skin sense of touch and liquid permeability Manufacture method.

The solution used to solve the problem

The manufacture method of the absorbent commodity of the present invention is as described below.(1) a kind of manufacture method of absorbent commodity, should Absorbent commodity has used composite sheet, and the composite sheet possesses：1st, it is in a face formed with multiple convex portions；And the 2nd, It is laminated in described 1st another face, and the manufacture method of the absorbent commodity possesses：Volume recovers process, in the volume Recover in process, described 1st is heat-treated and recovers the 1st volume；Formation process, in the formation process In, by carried out described 1st of teeth portion from the heat treatment to the 1st roller and groove portion and the 2nd roller teeth portion and groove portion each other The region supply of engagement, and multiple convex portions are formed in the one face contacted with the 1st roller of described 1st, described Another face described in 1st contacted with the 2nd roller forms multiple recesses；And bonding process, in the bonding process, With maintain the respective inside of state and the multiple convex portion that one face of described 1st and the 1st roller contact into For solid mode by described 1st and the 2nd roller separate and the shape of the multiple recess relaxed it is described another Individual face engages with a face of described 2nd, and forms the composite sheet, described 1st another described face and the described 2nd Junction surface between one face of piece is overlapped in described 1st relative respectively with the multiple convex portion in a thickness direction The region answered.

In the manufacture method of this absorbent commodity, in volume recovers process, recover the 1st volume, form work In sequence, by clamping the 1st between the 1st roller and the 2nd roller, convex portion is formed in a face of the 1st, in another face (back side) Form recess.Afterwards, in bonding process, the shape of convex portion and the shape of the recess separated with the 2nd roller are maintained using the 1st roller Relaxed, turned into (shallower and narrower) smaller than recess using the screen resilience (or elastic force) of the 1st composition fiber of itself Pit, the pit and the 2nd utilization junction surface engage.So, by by the pit, on i.e. the 1st another face with it is convex The corresponding region in portion and the 2nd chip bonding, it can suppress to produce gap between the 1st and the 2nd, i.e., can suppress in convex portion Interior formation hollow area.Thereby, it is possible to convex portion is formed as into solid shape.In addition, on the 1st another face and convex portion Corresponding region and the 2nd not only contact in shape, and engaged (illustrate：Bonding agent), therefore, it is possible to prevent at it The 1st separates with the 2nd and subsequently forms hollow area in process afterwards.That is, after can suppressing in the convex portion of composite sheet Hollow area is formed continuously, thus, it is possible to which convex portion is maintained into solid.Thereby, it is possible to take into account brought by solid convex portion it is soft The raising of soft, skin sense of touch and liquid permeability.

It can also be the manufacture method of the absorbent commodity according to described in above-mentioned (1), in the manufacture of this absorbent commodity In method (2), described 1st another described face is anti-wire side when manufacturing described 1st, described the one of described 2nd Individual face is anti-wire side when manufacturing described 2nd, in the bonding process, the anti-wire side of described 1st and the described 2nd The anti-wire side of piece engages.

Make fiber accumulations in the piece that filament support as net manufactures have manufacture piece when and net (fiber support Body) the face i.e. wire side that contacts and the side opposite with the wire side anti-wire side.In the part by anti-wire side side of piece, Compared with the part by wire side side, it is low to form the fibre density of fiber, forms fiber and easily moves, thus, volume is recovered to hold Easily, it is easy to fluff.Therefore, in the manufacture method of this absorbent commodity, when by the 1st and 2 chip bonding, by the anti-of two panels Wire side is bonded to each other.Therefore, in a face of the 1st, the i.e. part of wire side side, fibre density is higher, therefore, Yu When convex portion is formed in formation process, the composition fiber for the plastic deformation such as bend is more.Even as a result, in formation process Afterwards, the shape of convex portion also can more easily be maintained.On the other hand, another face at the 1st, the part of i.e. anti-wire side side In, fibre density is relatively low, therefore, when recess is formed in formation process, the composition fiber of the plastic deformation such as bend compared with It is few.In addition, recovering with making sufficiently bulky degree using heat treatment, it is easy to elastic deformation along thickness direction.If as a result, connecing Close the 2nd roller in process to separate with recess, then using the screen resilience (or elastic force) for forming fiber of recess, composition fiber can be made Substantially recover original state, i.e., the shape of recess can be made to relax and reduce pit, and fluff.Thereby, it is possible at the 1st A face formed and convex portion and another face is turned into less pit.Also, in the part by anti-wire side side of the 2nd, Fibre density is relatively low, therefore is easily deformed, therefore, it is possible to by the 2nd part by anti-wire side side and the anti-wire side of the 1st Part easily engages.Now, the composition fiber on the composition surface of two panels can be easily moved each other, therefore, it is possible to more reliable Ground suppresses to form hollow area in convex portion.That is, can more reliably suppress to form hollow area, energy in the convex portion of composite sheet It is enough that solid construction is more reliably formed in convex portion.

It can also be the manufacture method of the absorbent commodity according to described in above-mentioned (1) or (2), in this absorbent commodity Manufacture method (3) in, the multiple convex portion is continuously extended along the conveying direction MD of described 1st, described more Between convex portion adjacent to each other in individual convex portion, being continuously extended along the conveying direction MD has base portion, the absorption The manufacture method of property article is also equipped with intermittent engagement process, in the intermittent engagement process, in the base portion, along described defeated The compression for sending direction MD to be interrupted, so as to by described 1st and the 2nd chip bonding.

In the case of by the 1st and the 2nd chip bonding, do not filled in the diffusion of the thickness direction of the bonding agent of such as engagement The position divided, it is possible to which the composition fiber in the region on the surface of only each remains engaged with.In this case, the 1st adjacent Region between convex portion, not forming the base portion (recess) of convex portion, volume is recovered naturally using the 1st elastic force etc., the The concavo-convex relaxation of 1 is disappeared, and flexibility etc. is likely to decrease.Therefore, in the manufacture method of this absorbent commodity, by right The compression (deflation) that the base portion of the 1st is interrupted, and with the 2nd chip bonding.So, on the periphery of convex portion, by making the 1st Base portion and the 2nd discontinuously engage, and can more stably form the shape of convex portion.Thereby, it is possible to more stably formed in convex portion Solid construction.In addition, in the region around convex portion, the 1st and the 2nd is compressed, therefore, the part of the bottom of convex portion To compression unit side, i.e. the 2nd side is stretched, and is pressed so as to which convex portion is overall to the 2nd.Moreover, in the 2nd with the 1st piece The relative region in convex portion is close to the 1st side.Thus, the bottom (the 1st another face) of convex portion presses on one of the 2nd Face, even in gap be present between the 1st and the 2nd, it can also eliminate the gap.It is more solid in convex portion thereby, it is possible to make. In addition, in the case of joint continuity, the base portion of the 1st is integrally hardened, it is possible to create skin sense of touch is deteriorated or liquid is difficult to The state of affairs for the part movement changed is engaged and melts, but in this manufacture method, engagement is interruption, therefore, it is possible to avoid that The state of affairs of sample.

It can also be the manufacture method of the absorbent commodity according to described in any one of above-mentioned (1)~(3), in this suction In the manufacture method (4) of the property received article, the temperature of the outer peripheral face including the teeth portion of the 1st roller is higher than normal temperature and compares structure Low-melting 1st predetermined temperature of the material minimum into the fusing point in the material of described 1st.

In the manufacture method of this absorbent commodity, the outer peripheral face of the 1st roller has the 1st above-mentioned predetermined temperature, i.e., to the 1st 1st face of piece is heated, therefore, it is possible to which the 1st face of the 1st is changed places into figuration into convex form.Thereby, it is possible to the 1st One face of piece is stably formed the shape of multiple convex portions.Using the stabilisation of the shape of the convex portion, can more stably be formed Solid construction in convex portion.

It can also be the manufacture method of the absorbent commodity according to described in above-mentioned (4), in the manufacture of this absorbent commodity In method (5), the temperature of the outer peripheral face including the teeth portion of the 2nd roller is normal temperature less than the 1st pre- constant temperature 2nd predetermined temperature of degree.

It is stable in the 1st another face if the temperature of the outer peripheral face of the 2nd roller is more than the 1st above-mentioned predetermined temperature Ground forms recess.So, even if the 1st another face and the outer peripheral face of the 2nd roller separate, the shape of recess is also directly residual Deposit and gap is produced between the 1st and the 2nd, convex portion is possible to not turn into solid.Therefore, in the system of this absorbent commodity Make in method, in formation process, the 2nd roller and volume that make 2nd predetermined temperature lower than the 1st above-mentioned predetermined temperature recover Convex portion inner side abut.Thereby, it is possible to maintaining to recover into volume with another face that the 2nd roller contacts by the 1st In the state of directly formed concave shape, the 1st another face can maintained the state of screen resilience (or elastic force) Under be formed as concave shape.Also, the 1st another face is maintained to the state for maintaining screen resilience (or elastic force), therefore, If the 1st another face and the outer peripheral face of the 2nd roller separate in bonding process, recess can utilize the screen resilience relax into The pit smaller than the recess.Thereby, it is possible to which the pit and the 2nd are stably engaged, can more reliably suppress the 1st with The state of affairs in gap is produced between 2nd.That is, can more reliably suppress to form hollow area in the convex portion of composite sheet, thus, Convex portion can be more reliably set to turn into solid.

It can also be the manufacture method of the absorbent commodity according to described in above-mentioned (4) or (5), in this absorbent commodity Manufacture method (6) in, the top of the vertical of the 2nd roller is positioned at than the vertical by the 1st roller most Position of the imaginary horizontal plane of upper end by the downside of vertical.

The temperature of 1st roller is the above-mentioned predetermined temperature higher than normal temperature.Therefore, the object above the vertical of the 1st roller It is hot and heated due to the 1st roller, it is possible to as the temperature of the temperature same degree with the 1st roller.Therefore, in this absorbability thing In the manufacture method of product, in vertical, the 2nd roller is configured to the position than the 1st roller on the lower.Therefore, it is possible to prevent the 2nd The temperature of roller is influenceed by the 1st roller and turns into the temperature with the temperature same degree of the 1st roller.Thus, in formation process After 1st another face forms recess, the recess can be made easily to revert to the shape of general planar.As a result, Gap can not be produced between the 1st and the 2nd.That is, can more reliably suppress to be formed in the convex portion of composite sheet hollow Region, thus, it is possible to more reliably make convex portion turn into solid.

It can also be the manufacture method of the absorbent commodity according to described in any one of above-mentioned (1)~(6), in this suction In the manufacture method (7) of the property received article, the material of the outer peripheral face including the teeth portion of the 2nd roller is by dielectric formation.

In the manufacture method of this absorbent commodity, the material of the outer peripheral face of the 2nd roller is by dielectric formation.Therefore, the 1st When another face of piece and the outer peripheral face of the 2nd roller separate, the composition fiber in another face of the 1st is due to the periphery of the 2nd roller Friction between face and the 1st and be lifted in the presence of caused electrostatic, recess can be made to turn into smaller pit or more flat Smooth shape.Thereby, it is possible to more reliably engaged the 1st and the 2nd, do not produce gap between two panels.As a result, energy It is enough more reliably to suppress to form hollow area in the convex portion of composite sheet, thus, it is possible to more reliably make convex portion turn into solid.

It can also be the manufacture method of the absorbent commodity according to described in any one of above-mentioned (1)~(7), in this suction In the manufacture method (8) of the property received article, the 1st roller and the 2nd roller respectively on outer peripheral face along direction of rotation continuously Being extended has the teeth portion and the groove portion, and in the formation process, described 1st is supplied to the mesh regional Speed is below the outer circular velocity of the 1st roller.

If the feed speed (transporting velocity) of the 1st causes to produce fold at the 1st more than the outer circular velocity of the 1st roller. Therefore, in the manufacture method of this absorbent commodity, by making the periphery that the feed speed (transporting velocity) of the 1st is the 1st roller Below speed, it can be more reliably prevented from producing fold at the 1st, convex portion is formed as solid.

It can also be the manufacture method of the absorbent commodity according to described in any one of above-mentioned (1)~(8), in this suction In the manufacture method (9) of the property received article, in the formation process, the periphery of the periphery speed of the 2nd roller than the 1st roller Speed is fast.

In the manufacture method of this absorbent commodity, the outer circular velocity of the roller of periphery speed ratio the 1st of the 2nd roller is fast, therefore, the 2 rollers slide (Japanese on the 1st on the 1st roller：Wipe the upper げ Ru of り), therefore, it is possible to increase another surface side of leaning on of the 1st Partial deflection.Thereby, it is possible to be easy to make the composition fiber by another surface side of the 1st to be more easily moved deformation, because This, can more reliably suppress to produce the state of affairs in gap between the 1st and the 2nd, form sky in the convex portion i.e. in composite sheet Heart district domain, thus, it is possible to more reliably make convex portion turn into solid.

It can also be the manufacture method of the absorbent commodity according to described in any one of above-mentioned (1)~(9), in this suction In the manufacture method (10) of the property received article, in the formation process, the top of the 1st teeth portion by the 1st roller Portion presses on the bottom of the groove portion of the 2nd roller and compressed, and is not pressed at the top of the teeth portion of the 2nd roller The bottom of the groove portion of 1st roller and be uncompressed.

In the manufacture method of this absorbent commodity, the 2nd roller is pressed at the top of the teeth portion of the 1st roller by the 1st The bottom of groove portion and compressed, the base portion that can be stably formed in a face between convex portion adjacent to each other.In addition, the 1st It is not uncompressed by the bottom that the groove portion of the 1st roller is pressed at the top of the teeth portion of the 2nd roller, therefore, it is possible to be temporarily forming recess And the formation of auxiliary protrusion, further, it is possible to be easy to be carried out the recovery of shape by the elastic force being temporarily forming in the recess in convex portion (or volume recovery).Thereby, it is possible to be stably formed the shape of convex portion, separate and produce with the 2nd further, it is possible to suppress the 1st Raw gap.It can suppress to form hollow area in the convex portion of composite sheet, convex portion can be made to turn into solid.

It can also be the manufacture method of the absorbent commodity according to described in any one of above-mentioned (1)~(10), in this suction In the manufacture method (11) of the property received article, the 2nd roller is with the rotation (Japanese together with described 1st：Even れ return り) state rotation Turn.

In the manufacture method of this absorbent commodity, the 2nd roller correspondingly rotates with the shift amount of the 1st, therefore, without The adjustment of the speed of 2nd roller, it becomes possible to be difficult to produce fold, contracting at the 1st.Thereby, it is possible to more reliably suppress at the 1st Fold is produced, can form more reliably convex portion solid.

The effect of invention

A kind of in accordance with the invention it is possible to manufacture for the absorbent commodity that phenomenon recovered using volume is provided and forms convex portion Method and be the manufacture method for the absorbent commodity that can take into account the flexibility of composite sheet, skin sense of touch and liquid permeability.

Brief description of the drawings

Fig. 1 is the figure of a part for the configuration example for the absorbent commodity for representing embodiment.

Fig. 2 is the figure of the configuration example of the surface patch for the absorbent commodity for representing embodiment.

Fig. 3 is the figure of the configuration example of the manufacture device for the absorbent commodity for schematically showing embodiment.

Fig. 4 is the figure of the configuration example for the roller for schematically showing manufacture device.

Fig. 5 is the figure of the manufacture method for the absorbent commodity for schematically illustrating embodiment.

Fig. 6 is the figure of the manufacture method for the absorbent commodity for schematically illustrating embodiment.

Fig. 7 is the figure of the manufacture method for the absorbent commodity for schematically illustrating embodiment.

Fig. 8 is the figure of the manufacture method for the absorbent commodity for schematically illustrating embodiment.

Embodiment

Referring to the drawings, the absorbent commodity of present embodiment is illustrated by taking sanitary napkin as an example.Wherein, make For the species and purposes of absorbent commodity, be not particularly limited, for example, can include panty liner, disposable diaper (banding pattern, Pants type), incontinence pad, the amenities physiological articles such as absorbing sweat piece, these both can be taking human as object or to dote on The animal in addition to people such as thing is object.Liquid as the absorption object of the absorbent commodity is not particularly limited, example Liquid excreta, the body fluid of wearer can such as be included.

Fig. 1 is the figure for the configuration example for representing absorbent commodity 1, represents bowing in the state of absorbent commodity 1 is expanded View.Absorbent commodity (sanitary napkin) 1 has orthogonal length direction L, width W and thickness direction T, tool The main part 1A of standby alongst L extensions and extend in length direction L substantially central portion to width W both sides A pair of alar parts 1B, 1B.In addition, absorbent commodity 1 has through width W center and in alongst L extensions Entreat axis CL and through a pair of alar parts 1B, 1B length direction L center and along width W extend central axial line CW. In Fig. 1, the top for Fig. 1 is the front of absorbent commodity 1, and the lower section for Fig. 1 is absorbent commodity 1 Rear.In addition, the length direction L of absorbent commodity 1, width W and thickness direction T and the absorbent commodity 1 then discussed Each material length direction, width it is consistent with thickness direction, therefore, below, absorbent commodity 1 and its each material share Length direction L, width W and thickness direction T.In addition, " vertical view " refers to along from thickness direction T deploy from upper surface side State absorbent commodity 1." skin side " and " non-skin side ", which refers respectively to wear in the wearer of absorbent commodity 1, inhales During the property received article 1, in the thickness directiont relatively close to wearer skin face side and skin face away from wearer Side.By towards central axial line CL direction and the direction away from central axial line CL is set to width W inner side and outer The direction of side.Direction towards central axial line CW direction and remote central axial line CW is set to length direction L inner side With the direction in outside.These definition are also common to each material of absorbent commodity 1.In addition, in this manual, on then opinion The convex portion stated, " solid " under such circumstances, refer to that hollow area is (fine as movement in convex portion without liquid is hindered Tie up density space more significant lower compared with the fibre density of surrounding).

Absorbent commodity 1 comprises at least surface patch 2, back sheet 3 and absorber 4.Surface patch 2 is the flesh positioned at wearer The piece of the liquid permeability of skin side.As surface patch 2, such as the non-woven fabrics of liquid permeability can be included, weaved cotton cloth, the conjunction formed with liquid drain hole The arbitrary liquid-permeable sheets such as resin film, their composite sheet.Back sheet 3 is the opaque liquid positioned at the non-skin side of wearer Piece.As back sheet 3, such as non-woven fabrics, synthetic resin film, their composite sheet, the SMS nonwovens of opaque liquid can be included The arbitrary opaque liquid piece such as cloth.Overleaf the non-skin side of piece 3 can also be laminated for strengthening back sheet 3 and improving feel Outsourcing load 9.As outsourcing load 9, the material same with back sheet 3, the non-woven fabrics of hydrophobicity, synthetic resin can be included The arbitrary hydrophobicity piece such as film, their composite sheet.Absorber 4 is the absorbency and liquid between surface patch 2 and back sheet 3 The material of body retentivity.As absorber 4, paper pulp fiber, synthetic fibers, absorbable polymer etc. can be included.The profit of absorber 4 Engaged respectively with surface patch 2 and back sheet 3 with bonding agent, surface patch 2 and back sheet 3 are connect in their peripheral part by bonding agent Close.The bonding agent of engagement between surface patch 2, absorber 4 and back sheet 3 can use generally may be used in absorbent commodity 1 The known material that uses, such as thermoplastic adhesive.

Then, surface patch 2 is further illustrated.Surface patch 2 is formed by composite sheet 10.Fig. 2 is represent embodiment compound The figure of the configuration example of piece 10 (surface patch 2).Fig. 2 (a) is the partial top view of composite sheet 10, and Fig. 2 (b) is Fig. 2 (a) IIb-IIb ' sectional views.Composite sheet 10 possesses the 1st 12 and the 2nd 13.Wherein, the direction in thickness direction T is set to upward, Other direction is set to down.

Have for 1st 12 as the 1st upper surface 12E (face) in the face upward on thickness direction T and as down Face the 1st lower surface 12F (another face), be alongst L and width W extension piece.1st 12 the 1st Upper surface 12E includes the multiple convex portions 15 and alongst L continuously extends that alongst L is continuously extended The base portion 16 being arranged between convex portion 15 adjacent to each other.Convex portion 15 can be referred to as the 1st upper surface 12E from base portion 16 in thickness Protuberance prominent upward on the T of direction.Engaged in the 1st lower surface 12F using junction surface 14 with the 2nd 13 for 1st 12.As convex The size in portion 15, such as width 0.25mm~5mm, height 0.25mm~5mm, spacing 0.5mm~10mm can be included.

Possess for 2nd 13 as the 2nd upper surface 13E (face) in the face upward on thickness direction T and as down Face the 2nd lower surface 13F (another face), be alongst L and width W extension piece.2nd 13 the 2nd Upper surface 13E is engaged using junction surface 14 with the 1st 12.2nd 13 can also be at convex portion 15 in the thickness directiont upward slightly It is micro- to heave.I.e. or, the border between the 1st 12 and the 2nd 13 is slightly convex at convex portion 15.

Junction surface 14 engages the 2nd upper surface 13E of the 1st lower surface 12F and the 2nd 13 of the 1st 12, in this embodiment party It is to illustrate the bonding agent into hot-melt adhesive in formula, does not express in figure, but upwardly and downwardly spread along thickness direction T. Junction surface 14 is overlapped in the 1st 12 and with multiple convex portions 15 distinguishes corresponding region in the thickness directiont.In other words, from thickness When spending direction T top observation, overlooking, at least a portion at junction surface 14 is contained at least one of the region of each convex portion 15 Point.Wherein, as junction surface 14, if can by the 1st and the 2nd 13 engagement, be just not particularly limited or, example Such as apply relatively thin conductive material and make the 1st and the 2nd 13 thermal weldings using sensing heating.

So, using junction surface 14 by the 2nd upper surface of the 1st lower surface (another face) 12F and the 2nd 13 of convex portion 15 (face) 13E is engaged, and therefore, it is possible to suppress to form gap between convex portion 15 and the 2nd 13, can make to turn into convex portion 15 Solid shape.Thereby, it is possible to make the overall mobile route for turning into liquid in convex portion 15, it is possible to increase the liquid permeability of composite sheet 10. In addition, in convex portion 15 of the composite sheet 10 formed with multiple raised line shapes, therefore, it is possible to improve flexibility, the flesh that wearer is felt Skin sense of touch.So, composite sheet 10 is made to take into account flexibility, skin sense of touch and liquid permeability.In this case, convex portion 15 is solid Shape, therefore, from the viewpoint of liquid permeability, the 2nd upper surface 13E of the 1st lower surface 12F and the 2nd 13 of the 1st 12 The distance between be convex portion 15 the height in the thickness directiont away from base portion 16 5% within, within preferably 1%.

In the present embodiment, the pattern at junction surface 14 be alongst L extension and along width W each other The pattern (candy strip) for the multiple wire being arranged in parallel.As the size of candy strip, such as width 0.5mm can be included ~2mm, spacing 1mm~4mm.Wherein, the pattern as junction surface 14, as long as being overlapped in the thickness directiont and the phase of convex portion 15 Corresponding region, is just not particularly limited or Ω patterns, net-like pattern, spiral pattern.It is as long as in addition, above-mentioned each Pattern, the region that just can also have convex portion 15 in whole region, a small amount of region of composite sheet 10 do not include junction surface 14 Region.

In the present embodiment, composite sheet 10 is also equipped with compression unit 17.Compression unit 17 is in each base portion 16 along length side Discontinuously configured to L.Compression unit 17 both can alongst L, can also be with non-etc. to configure at equal intervals in base portion 16 Interval configuration., both can be at same location in the length directionl for adjacent base portion 16 on width W, also may be used With positioned at the position differed.In the present embodiment, on base portion 16, it is configured to city's pine checker textured.In addition, pressure The shape of the vertical view in contracting portion 17 is the arbitrary shapes such as ellipticity.Compression unit 17 be in the thickness directiont from the top of the 1st 12 and The lower section of the 2nd 13 clamps and compresses and formed, by the 1st 12 and the 2nd 13 engagements.In addition, composite sheet 10 can not also Possesses compression unit 17.

In the present embodiment, make fiber accumulations filament support as net for the 1st 12 and manufacture, will be at it The face contacted during manufacture with net (filament support) is referred to as wire side, and the face of the side opposite with the wire side is referred to as into anti-wire side. The 1st upper surface 12E and the 1st lower surface 12F of the 1st 12 is the wire side and anti-wire side when manufacturing the 1st 12 respectively.Moreover, the 2nd 2nd upper surface 13E of piece 13 and the 2nd lower surface 13F is the anti-wire side and wire side when manufacturing the 2nd 13 respectively.Thus, in this reality Apply in mode, the anti-wire side of the 1st 12 and the anti-wire side of the 2nd 13 are engaged.

The grammes per square metre of convex portion 15 and base portion 16 in 1st 12 is roughly the same.Fibre of the fibre density of convex portion 15 than base portion 16 It is low to tie up density.The fibre density of base portion 16 is lower than the fibre density of compression unit 17.The fibre density of convex portion 15 is relatively low, therefore, wears The person of wearing can feel flexibility.The grammes per square metre of the 1st 12 and the grammes per square metre of the 2nd 13 both can be higher with one of which, can also both It is identical.

1st 12 using liquid permeability and be can be made by predetermined heat treatment volume recover bulk recovery piece. In absorbent commodity 1, the 1st 12 volumes are recovered.As the piece of bulk recovery, can include non-woven fabrics, such as hot blast without Spin the non-woven fabrics of the liquid permeabilities such as cloth, air-laid nonwoven fabrics, needle punched non-woven fabrics, spunlace non-woven cloth.As grammes per square metre, example can be included Such as 10g/m²~200g/m².In addition, as the composition fiber of the 1st 12, the fibre of such as Polyester, polyolefin can be included Dimension or their composite fibre.As composite fibre, such as polyethylene terephthalate (PET)/polyethylene can be included (PE), the fiber of the core such as polypropylene (PP)/polyethylene (PE)/sheath construction.In the present embodiment, using poly terephthalic acid second The fiber of the core of diol ester (PET)/polyethylene (PE)/sheath construction.As the fiber number of fiber, for example, can include 1dtex~ 20dtex。

As long as the 2nd 13 liquid permeability, the piece of bulk recovery just can be both used, can also be recovered without using volume The piece of property.In the present embodiment, from the viewpoint of for flexibility, the nothing with the 1st 12 identical bulk recoveries is used Spin cloth, i.e., the fiber that constructs of the core of polyethylene terephthalate (PET)/polyethylene (PE)/sheath.In absorbent commodity 1 In, the 2nd 13 volumes are recovered.But the 2nd 13 can also use and the 1st 12 different pieces.

Then, the composition of the manufacture device 50 of the absorbent commodity 1 of present embodiment is illustrated.Fig. 3 is schematic Ground represents the figure of the configuration example of the manufacture device 50 of absorbent commodity 1.Fig. 4 is the structure for the roller for schematically showing manufacture device 50 Into the figure of example.Manufacture device 50 possesses the 1st annealing device 51, the 1st roller 52, the 2nd roller 53, the 2nd annealing device 54, bonding agent Applying device 55, engagement roller 56 and main body manufacture device 57.The conveying of material on composite sheet 10 etc., manufacture device 50 With conveying direction MD, and transverse direction CD along conveyor surface orthogonal with conveying direction MD and with conveying direction MD and horizontal stroke Pass through the orthogonal above-below direction TD of direction CD.Wherein, composite sheet 10, form composite sheet 10 material (component) length direction, width Spend direction and thickness direction is identical with conveying direction MD, transverse direction CD and above-below direction TD.Thus, in composite sheet 10, structure Into in the material of composite sheet 10, for length direction, width and thickness direction, also respectively using conveying direction MD, traverse Direction CD and above-below direction TD.

1st annealing device 51 is to carry out the heat-treating apparatus to the piece for wanting volume to recover using heat treatment.In this reality Apply in mode, the 1st annealing device 51 is supplied to the material of the 1st 12 and is to recover volume using predetermined heat treatment The 1st P12a.Also, the one side of the 1st annealing device 51 conveys the 1st P12a, while to the 1st along conveying direction MD P12a carries out above-mentioned predetermined heat treatment and recovers its volume, and forms the 1st P12b.

In the present embodiment, the 1st annealing device 51 utilizes the both ends for the transport path being respectively arranged in device Such as the 1st P12a of niproll adjustment tension force while conveying.As heat treatment method, can include for example to the 1st P12a's Any one face (illustrates：Anti- wire side) or two sides supply hot blast method.Now, the 1st P12a does not contact with conveyer belt, therefore whole It is easy to equably volume recovery on body.Wherein, the 1st annealing device 51 is not limited to the example, such as can also be by the 1st Piece supporting member as P12a is placed in conveyer belt conveys.As heat treatment method, can include for example to the 1st P12a The face opposite with the face of contact chip supporting member (illustrate：Anti- wire side) supply hot blast method.Now make to be supplied with hot blast Face than another face be easy to volume recover.

Piece is held on both teeth portion and the mesh regional of groove portion and in a face shape of piece by the 1st roller 52 and the 2nd roller 53 Into multiple convex portions, multiple recesses are formed in another face.In the present embodiment, the 1st roller 52 is on the outer peripheral face of the 1st roller 52 1st precalculated position and the 2nd roller configure facing with each otherly.1st roller 52 is provided with along direction of rotation in its outer peripheral face continuously to be extended The multiple teeth portion 52a set and the groove portion being continuously extended on along direction of rotation between teeth portion 52a adjacent to each other 52b.2nd roller 53 is provided with along direction of rotation continuously extended multiple teeth portion 53a and along rotation side in its outer peripheral face To the groove portion 53b being continuously extended between teeth portion 53a adjacent to each other.As shown in imaginary line EL1, EL2 (Fig. 4) The teeth portion and groove portion of two rollers are configured in a manner of being engaged with each other.Also, the teeth portion 52a and groove portion 52b of the 1st roller 52 and the 2nd roller Teeth portion 53a and groove portion 53b clamps the 1st P12b and in a 1st P12b face in the mesh regional B1 that both are engaged with each other Multiple convex portions are formed, multiple recesses are formed in another face.Thus, the 1st roller 52 and the 2nd roller 53 are formed by mesh regional B1 The P12c of the 1st P12b, i.e. the 1st.The outer peripheral face of 1st roller 52 and the 2nd roller 53 can be set to desired temperature.In the 1st roller In 52, at least outer peripheral face is that for example metal (illustrates：Stainless steel) system, in the 2nd roller 53, at least outer peripheral face is such as dielectric (illustrate：Synthetic resin) system.

2nd annealing device 54 is to carry out the heat-treating apparatus to the piece that volume recovery is carried out using heat treatment. In present embodiment, as the material of the 2nd 13, the 2nd P13a that predetermined heat treatment can be utilized to recover volume is used. 2nd annealing device 54 is supplied to the 2nd P13a, while conveying the 2nd P13a, while to the 2nd along conveying direction MD P13a carries out above-mentioned predetermined heat treatment and recovers its volume, and forms the 2nd P13b.

2nd annealing device 54 adjusts tension force while defeated in the same manner as the 1st annealing device 51, using such as niproll The 2nd P13a is sent, is heat-treated using the method that hot blast is for example supplied to the 2nd P13a two sides.Wherein, can also Be, for example, piece supporting member as the 2nd P13a is placed in into conveyer belt is conveyed, using to the 2nd P13a with The method of the opposite face supply hot blast in the face of contact chip supporting member is heat-treated.

Adhesive applicating apparatus 55 is in a predetermined pattern in a 2nd P13b face adhesive-applying.Bonding agent is not There is special limitation, such as hot-melt adhesive can be included.Predetermined pattern is set to, in rear process, in the another of the 1st P12c When one face and a 2nd P13c face have been engaged, the 1st P12c region corresponding with multiple convex portions difference and viscous It is overlapping in the thickness directiont to connect agent.Thus, adhesive applicating apparatus 55 forms the 2nd P13b, i.e. for being coated with bonding agent 2 P13c.

Engagement roller 56 clamps two in the facing region that faces of the outer peripheral face of engagement roller 5 and the teeth portion and groove portion of the 1st roller 52 Open piece and make its engagement.In the present embodiment, engagement roller 56 is different from the 1st precalculated position on the outer peripheral face of the 1st roller 52 The 2nd precalculated position and 52 configuration facing with each other of the 1st roller.Engagement roller 56 is provided with respectively along rotation in the base portion 56q of its outer peripheral face The pin 56p configured with turning direction and rotation axis Directional discontinuity.The engagement roller 56 as shown in imaginary line EL1, EL2 (Fig. 4) Pin 56p and the 1st roller 52 teeth portion 52a are configured in a manner of facing with each other.Also, the pin 56p and base portion 56q of engagement roller 56 and The teeth portion 52a and groove portion 52b of 1 roller 52 clamp the 1st P12c and the 2nd P13c both are facing with each other in face of region B2, make 1st P12c another face and a 2nd P13c face are in close contact and utilize junction surface 14 (to illustrate：Bonding agent) connect Close.Thus, the 1st roller 52 and the 2nd roller 53 form the 1st P12c and the 2nd P13c layered product, i.e. composite sheet P10.In this implementation In mode, the pin 56p of engagement roller 56 and the teeth portion 52a of the 1st roller 52 clamp the 1st P12c and the 2nd P13c, and are compressed (deflation), compression unit 17, in the case where not forming compression unit 17, engagement roller 56 are formed therefore, it is possible to position upon compression Can also be backing roll (roller for not selling 56p).In this case, it is really up to the mark and touched to flexibility, skin that compression unit can be suppressed Sense brings dysgenic possibility.The outer peripheral face of engagement roller 56 can be set to desired temperature.In engagement roller 56, at least Outer peripheral face is that for example metal (illustrates：Stainless steel) system.

Main body manufacture device 57 is supplied to the composite sheet P10 as the material of surface patch 2.Also, by the composite sheet P10, the absorber (not shown) for preparing (manufacture) good material as absorber 4 in addition, preparation (manufacture) is good in addition Backing material piece (not shown) as the material of back sheet 3 is stacked gradually and is engaged with each other, and cuts into production one by one Product.Thus, main body manufacture device 57 is continuously formed absorbent commodity P1.For absorbent commodity P1 forming method, as long as Composite sheet P10 is used for the material of surface patch 2, is just not particularly limited, known various methods can be used.

Then, 3~Fig. 8 of reference picture illustrates to the manufacture method of the absorbent commodity 1 of present embodiment.Wherein, Fig. 5 ~Fig. 8 is the sectional view of the manufacture method for the absorbent commodity for schematically illustrating embodiment.This manufacture method possesses the 1st body Product recovers process S1 (Fig. 5), formation process S2 (Fig. 6~Fig. 7), the 2nd volume and recovers process S3, working procedure of coating S4, bonding process S5 (Fig. 8) and main body manufacturing process S6.

In the 1st volume recovers process S1, filled from the 1st P12a of the 1st material volume (not shown) uncoiling by the 1st heat treatment Put 51 heat treatments and volume is recovered.1st P12a material is identical with the material of the 1st 12, in the present embodiment, using poly- The fiber of the core of ethylene glycol terephthalate (PET)/polyethylene (PE) (high density)/sheath construction.Now, such as Fig. 5 (a) institute Show, a 1st P12a face 20a is the higher wire side of density for forming fiber, and another face 20b is the density for forming fiber Relatively low anti-wire side.In the 1st annealing device 51, the 1st P12a a face 20a and another face 20b are exposed to heat Wind or heating atmosphere.Thus, as shown in Fig. 5 (b), the 1st P12a volume is recovered and forms the 1st P12b.1st P12b with 1st P12a compares, grammes per square metre constant, but thickness is thickening, and form the density of fiber reduces on the whole.In the situation Under, can be by the 1st P12a's compared with the 1st P12a being placed in into conveyer belt and make the situation that it passes through in hot blast Two sides is substantially equally exposed to hot blast or heating atmosphere, therefore, it is possible to recover the overall more uniformly volumes of the 1st P12a, Can more soft and skin sense of touch it is good.

For the viewpoint for considering to can serve as the 1st P21a material and recover its volume, heat treatment (hot blast now Or atmosphere) temperature be than form the fusing point of the minimum material of fusing point in the 1st P12a material it is low and than (fusing point- 50 degree) the high treatment temperature of temperature.From the viewpoint of the 1st P12a stably volume recoveries are made, under treatment temperature Limit is preferably higher than the temperature of (fusing point -30 degree), more preferably higher than the temperature of (fusing point -20 degree).On the other hand, for will be upper From the viewpoint of the possibility of the minimum material molten of the fusing point stated reliably excludes, the upper limit for the treatment of temperature is preferably than (this is molten Point -5 spend) temperature it is low, the temperature more preferably than (fusing point -10 degree) is low.In the present embodiment, using poly terephthalic acid Material of the fiber of the core of glycol ester (PET)/polyethylene (PE) (high density)/sheath construction as the 1st P12a, high density are gathered The fusing point of ethene (HDPE) is 140 DEG C, and treatment temperature is set into such as 130 DEG C.

Next, in formation process S2, the 1st P12b is supplied to mesh regional B1.As shown in fig. 6, utilize the 1st roller 52 and the 2nd roller 53 forms multiple convex portions 21 in the 1st P12b face 20a contacted with the 1st roller 52, in adjacent convex portion 21 Between formed base portion 23, form multiple recesses 22 in the 1st P12b another face 20b contacted with the 2nd roller 53.As a result, Form the 1st P12c.In addition, 1st upper surface 12Es and 1st lower surface of the face 20a and another face 20b with composite sheet 10 12F is corresponding, and convex portion 21 and base portion 23 are corresponding with convex portion 15 and base portion 16.

Now, in the 1st P12b, part between the teeth portion 52a of the 1st roller 52 is by the teeth portion 53a of the 2nd roller 53 from another Individual face 20b sides extrude towards face 20a sides, i.e. towards the groove portion 52b of the 1st roller 52 bottom 52s.Now, the 1st P12b Do not contacted with part corresponding the teeth portion 53a of the 2nd roller 53 top 53t with bottom 52s, thus, the 1st P12b not with bottom 52s is contacted.In other words, the 1st P12b is relative to the non-backings of groove portion 52b.Wherein, " non-backing " not only include the 1st P12b with Gap between the 52s of bottom be present in addition to situation that the 1st 12b contacts with bottom 52s, the 1st 12b are by bottom 52s Mildly it is compressed into the situation for the degree not being plastically deformed.Moreover, in the 1st P12b, between the teeth portion 53a of the 2nd roller 53 Part is squeezed by the teeth portion 52a of the 1st roller 52 from face 20a sides towards another face 20b sides, i.e. towards the bottom 53s of the 2nd roller 53 Pressure.Now, the 1st P12b can both contact with bottom 53s, can not also contact.In other words, the 1st P12b both can be relative , can not also backing in groove portion 52b backings.Due to these, convex shape, i.e. can be formed in a 1st P12b face 20a Convex portion 21, base portion 23 can be formed between adjacent convex portion 21, and can be formed in the 1st P12b another face 20b recessed Shape, i.e. recess 22.

In the present embodiment, as preferable form, the 1st P12b base portion 23 is by the teeth portion 52a of the 1st roller 52 top Portion 52t presses on the bottom 53s of the 2nd roller 53 and compressed.Utilize the mutual hot melt of composition fiber carried out due to the compression Connect, be plastically deformed, the shape of base portion 23 is fixed.Thereby, it is possible to the base of the both sides using the transverse direction CD in the convex portion 21 The 1st P12b convex portion 21 is stably fixed in portion 23 essentially along above-below direction TD.As a result, it can make in the 1st P12b The convex portion 21 by face 20a sides dimensionally stable.

Now, in the 1st P12b, the 1st P12b convex portion 21 is not pressed by the bottom 52s of the 1st roller 52, is not pressed Contracting.Thus, do not occur to form the mutual thermal welding of fiber, plastic deformation, therefore, the 1st P12b convex portion 21 and the reality of recess 22 Fixed in matter not along above-below direction TD.If as a result, the teeth portion 53a of the 2nd roller 53 is removed, the screen resilience of fiber is being formed In the presence of (or elastic force), the 1st P12b recess 22 is in the state that can be returned to before being engaged by teeth portion 53a.That is, can The 1st P12c another face 20b contacted with the 2nd roller 53 multiple recesses 22 are regarded as so that original state can be reverted to (not The state of depression) state be temporarily forming.

Afterwards, the 1st P12c states that are contacted with the 1st roller 52 of a face 20a are maintained and by the another of the 1st P12c Individual face 20b pulls open from the 2nd roller 53.Now, as shown in fig. 7, a 1st P12c face 20a continues to contact with the 1st roller 52, because This, multiple convex portions 21 are stably maintained in the 1st P12c face 20a contacted with the 1st roller 52.On the other hand, the 1st P12c another face 20b is pulled open from the 2nd roller 53, therefore, the 1st P12c another face 20b's contacted with the 2nd roller 53 Multiple recesses 22 revert to original state (state not being recessed).

In the present embodiment, as preferable form, consider to can serve as the 1st P21b material, the 1st roller 52 includes The temperature of teeth portion 52a outer peripheral face is set to (illustrate than normal temperature：25 DEG C) it is high and than forming the 1st 12, i.e. the 1st piece P12b material Low-melting 1st predetermined temperature of the minimum material of fusing point in material.The temperature of the outer peripheral face of the 1st roller 52 is improved if so, Then due to the effect of figuration, shape more stableization of the convex portion 21 of the 1st P12b face 20a sides can be made.In addition, A hot part for 1st roller 52 accumulates the part in the 1st P12b one face 20a of ratio surface in the inner part, therefore, another Face 20b is pulled open and recess 22 when reverting to original state from the 2nd roller 53, the effect that the volume carried out by heat can be utilized to recover Fruit aids in by recovering caused by the screen resilience (or elastic force).From the viewpoint of shape more stableization of convex portion 21 is made, The lower limit of 1st predetermined temperature is preferably higher than the temperature of (fusing point -60 degree), more preferably higher than the temperature of (fusing point -50 degree).Separately On the one hand, for preventing the 1st P12b steady by the shape of overall heating, the 1st P12b another face 20b multiple recesses 22 Fixedization, can not revert to original state it is such from the viewpoint of, the upper limit of the 1st predetermined temperature is preferably than (fusing point -20 degree) Temperature it is low, the temperature more preferably than (fusing point -30 degree) is low.

In the present embodiment, as further preferred form, consider to can serve as the 1st P21b material, by the 2nd roller The temperature of 53 outer peripheral face including teeth portion 53a is set to normal temperature and (illustrated：25 DEG C) less than the 1st above-mentioned predetermined temperature 2nd predetermined temperature.The temperature of outer peripheral face by so making the 2nd roller 53 is lower than the temperature of the outer peripheral face of the 1st roller 52, the effect of figuration Fruit almost disappears, and the effect that volume is recovered becomes strong, so as to make the 1st P12b another face 20b multiple recesses 22 more Add and be easy to revert to original state.For from the viewpoint of being further susceptible to recess 22 to revert to original state, the 2nd is pre- The upper limit of constant temperature degree is preferably than the temperature of (fusing point -70 for forming the minimum material of the fusing point in the 1st P12b material is spent) Low, the temperature more preferably than (fusing point -80 degree) is low.It is preferred that the 2nd roller 53 can not also be heated.

In this case, the temperature of the outer peripheral face including teeth portion 52a of the 1st roller 52 and the 2nd roller 53 including teeth portion 53a Preferably more than 50 degree, more preferably more than 60 degree, further preferred more than 70 degree of the temperature difference of outer peripheral face.By setting the 1st roller The temperature difference of the outer peripheral face of the temperature of 52 outer peripheral face and the 2nd roller 53, can be more reliably and stably the 1st P12b's One 20a face forms multiple convex portions 21, further, it is possible to which another face 20b multiple recesses 22 are original to be easy to revert to The state of state (state not being recessed) is temporarily forming.

In the present embodiment, using polyethylene terephthalate (PET)/polyethylene (PE) (high density) core/ Material of the fiber of sheath construction as the 1st P12b, the fusing point of high density polyethylene (HDPE) (HDPE) is 140 DEG C.In this case, example Temperature such as the outer peripheral face including teeth portion 52a of the 1st roller 52 is set to about 100 DEG C, the outer peripheral face for including teeth portion 53a of the 2nd roller 53 Temperature be set to normal temperature (illustrate：About 25 DEG C, wherein, by the 1st roller 52 heat somewhat heat.), by the 1st roller 52 and the 2nd roller 53 The temperature difference of outer peripheral face is set to about 75 DEG C.

In the present embodiment, as preferable form, the material of the outer peripheral face including teeth portion 53a of the 2nd roller 53 is not by Dielectric formation as conductive synthetic resin.In the present embodiment, using nylon.Therefore, in the 1st P12c When being separated with the 2nd roller 53, because of the friction between the outer peripheral face of the 2nd roller 53 and the 1st P12c and caused by the presence of electrostatic, 1st P12c another face 20b composition fiber is adsorbed on the 2nd roller 53.Thus, the 1st P12c another face 20b Form fiber to be lifted to the direction of the 2nd roller 53, recess 22 can be made to revert to smaller pit or flat shape.Thus, In the bonding process S5 then discussed, can between the 1st P12c and the 2nd 13c not further produce gap side Formula is by two material chip bondings.As a result, it can make more solid in composite sheet P10 convex portion 21.In addition, in the outer of the 1st roller 52 In the case of temperature difference being carried between the outer peripheral face of side face and the 2nd roller 53, dielectric, particularly synthetic resin and metal phase ratio Compared with specific heat is larger, and therefore, the temperature for being difficult to make the 2nd roller 53 using the heat of the 1st roller 52 rises, thus, it is possible to be easy to maintain the 1st Temperature difference between the outer peripheral face of the roller 53 of roller 52 and the 2nd.

Next, in the 2nd volume recovers process S3, in the same manner as the 1st volume recovery process S1 shown in Fig. 5, from the 2nd 2nd P13a of material volume (not shown) uncoiling is heat-treated by the 2nd annealing device 54, carries out volume recovery.2nd P13a's Material is identical with the material of the 2nd 13, in the present embodiment, uses polyethylene terephthalate (PET)/polyethylene (PE) fiber of the core of (high density)/sheath construction.Now, a 2nd P13a face 30a is that the density of composition fiber is relatively low Anti- wire side, another face 30b are the higher wire sides of the density of composition fiber.In the 2nd annealing device 54, the 2nd P13a's One face 30a and another face 30b are exposed to hot blast or heating atmosphere.Thus, the 2nd P13a carries out volume recovery and formed 2nd P13b.2nd P13b is compared with the 2nd P13a, grammes per square metre constant, but thickness is thickening, and the density for forming fiber is whole Reduced on body.In this case, the 2nd P13a two sides can be made substantially equally to be exposed to hot blast or heating atmosphere, can Making the 2nd P13a, more uniformly volume is recovered, can be more soft.In addition, a face 30a and another face 30b and composite sheet 10 The 2nd upper surface 13E and the 2nd lower surface 13F it is corresponding.

From the viewpoint of recovering for volume, the temperature of heat treatment now is than forming in the 2nd P13a material Low and higher than the temperature of (fusing point -50 degree) treatment temperature of the fusing point of the minimum material of fusing point.In the present embodiment, make Material by the use of the fiber that core/sheath of polyethylene terephthalate (PET)/polyethylene (HDPE) constructs as the 2nd P13a, The fusing point of high density polyethylene (HDPE) is 140 DEG C, and treatment temperature is set into 130 DEG C.

Next, in working procedure of coating S4, the 2nd P13b after heat treatment supplies to adhesive applicating apparatus 55.Then, In a predetermined pattern in a 2nd P13b face 30a adhesive-applying.In the present embodiment, predetermined pattern is Fig. 2 institutes Show such striped being arranged at a predetermined interval along conveying direction MD extensions, along transverse direction CD, that there is preset width Pattern.Predetermined pattern is set to, in rear process, in the 1st P12c another face 20b and a 2nd P13c face When 30a has been engaged, the 1st P12c's distinguishes corresponding region and the bonding agent weight on above-below direction TD with multiple convex portions 21 It is folded.Wherein, the width of the bonding agent at junction surface 14, interval both can be identical with the width of convex portion 21, interval, can also difference.

Next, in bonding process S5, the 1st P12c and the 2nd P13c supplies in face of region B2.Now, the 1st A P12c face 20a maintains the state contacted with the 1st roller 52, and multiple convex portions 21 are maintained.On the other hand, the 1st P12c Another face 20b and the 2nd roller 53 separate, the shapes of multiple recesses 22 relaxes (pit diminishes).Also, as shown in figure 8, utilize The base portion 56q of engagement roller 56, pin 56p and the 1st roller 52 teeth portion 52a, clamp the 1st P12c and the 2nd P13c, the 1st P12c another face 20b and a 2nd P13c face 30a is in close contact, and is engaged using junction surface 14 (bonding agent).Formed 1st P12c and the 2nd P13c layered product is composite sheet P10.Composite sheet P10 is substantially composite sheet 10.Now, can incite somebody to action The distance between 1st P12c face 20a and the 2nd P13c another face 20b be set to convex portion 21 away from base portion 23 Within 5% of height on above-below direction TD, within preferably 1%, thus, it is possible to make convex portion 21 turn into solid shape.By This, improves the permeability of the liquid of convex portion 21 on the whole.

In the present embodiment, as preferable form, when the 1st P12c and the 2nd P13c is engaged, by two panels Anti- wire side is engaged with each other.Therefore, a face 20a in the 1st P12c, the i.e. part of wire side side, fibre density is higher, therefore, When convex portion 21 is formed in formation process S2, the composition fiber for the plastic deformation such as bend is more.As a result, forming work After sequence S2, the shape of convex portion 21 also can be stably maintained.In addition, another face 20b, i.e. anti-wire side side in the 1st P12c Part, fibre density is relatively low, and therefore, volume is largely recovered, and is easy to along above-below direction TD elastic deformations.In addition, in When recess 22 is formed in formation process S2, the composition fiber for the plastic deformation such as bend is less.If as a result, in engagement work The 2nd roller 53 leaves in sequence S5, then due to recess 22 composition fiber screen resilience (or elastic force), the shape of recess 22 can be made It is smaller, and the wildness of recess 22 can be made.Thereby, it is possible to be stably formed convex portion 21 in a 1st P12c face 20a And another face 20b is set to turn into smaller pit.Further, it is possible to by the 2nd P13c by the part of anti-wire side side and the 1st The part of P12c anti-wire side more easily engages.Now, in the part by anti-wire side side of two panels, fibre density is relatively low, because This, is easily deformed, and therefore, the composition fiber of two panels can be easily moved each other, can more reliably be suppressed in convex portion 21 Form hollow area.That is, can more reliably suppress to form hollow area in composite sheet P10 convex portion 21, can be more reliable Ground forms solid construction in convex portion 21.

In the present embodiment, further it is engaged roller 56 as preferable form, the 1st P12c and the 2nd P13c The teeth portion 52a clampings of 56p and the 1st roller 52 are sold, are compressed (deflation), compression unit 27 is formed at the position that have compressed.That is, the 1st In piece P12c base portion 23, above-below direction TD compression is discontinuously carried out along conveying direction MD, therefore, the 1st P12c and the 2nd Piece P13c is discontinuously engaged, and the engagement of junction surface 14 (bonding agent) is also reinforced.In such a case it is possible to say bonding process S5 is in addition to carrying out the engagement of junction surface 14 (bonding agent), in addition to intermittent engagement process, in the intermittent engagement process, profit Discontinuously engaged along conveying direction MD with compression unit 27.In addition, compression unit 27 is relative with the compression unit 17 of composite sheet 10 Should.

By being arranged such compression unit 27, connect even if assuming to exist in the 1st P12c and the 2nd P13c junction surface 14 Weaker position is closed, the engagement of the compression unit 27 can also make up to weaker position.It is believed that：For example assuming base portion When the above-below direction TD of bonding agent in 23 diffusion is insufficient, engagement is weaker, the 1st P12c due to elastic force of itself etc. and Naturally volume is recovered, and reduces the relaxation of bumps.Therefore, using compression unit 27, the 1st P12c base is made on the periphery of convex portion 21 Portion 23 discontinuously engages with the 2nd P13c, so as to more stably maintain the shape of convex portion 21.Thereby, it is possible to more stably Maintain the solid construction in convex portion 21.In addition, in the case of compression unit 27 is continuous, the 1st P12c base portion 23 is overall to be hardened, Skin sense of touch is deteriorated or liquid is difficult to move melting the part changed due to compression, in the present embodiment, compression unit 27 It is interruption, therefore, it is possible to avoid such state of affairs.In addition, the 1st P12c and the 2nd in the region around convex portion 21 P13c is compressed, and therefore, the part of the bottom of convex portion 21 is stretched to the side of compression unit 27, i.e. the 2nd piece P13c sides, so as to convex portion 21 Entirety presses on the 2nd P13c.Moreover, the region relative with the 1st P12c convex portion 21 in the 2nd P13c is to the 1st P12c sides are close.Thus, the bottom (the 1st P12c another face 20b) of convex portion 21 presses on a 2nd P13c face 30a, even in gap be present between the 1st P12c and the 2nd P13c, the gap can also be flattened.Thereby, it is possible to make convex portion Increasingly constituted in 21 solid.

In the present embodiment, do not make from the viewpoint of the formation easness of compression unit 27 and from the viewpoint of piece melts, to connect The temperature for closing the outer peripheral face including pin 56p of roller 56 (is illustrated than normal temperature：25 DEG C) high and ratio composition the 1st P12c and the 2nd Low-melting 3rd predetermined temperature of the minimum material of fusing point in P13c material.It is preferred that the temperature than (fusing point -60 degree) It is high and lower than the temperature of (fusing point -30).In the present embodiment, using polyethylene terephthalate (PET)/polyethylene (HDPE) material of the fiber of core/sheath construction as the 1st P12c and the 2nd P13c, high density polyethylene (HDPE) (HDPE) melt Point is 140 DEG C, and the 3rd predetermined temperature is set into 100 DEG C.

Next, in main body manufacturing process S6, the composite sheet P10 as the material piece of surface patch 2 manufactures to main body Device 57 supplies.Prepare the absorber of (manufacture) good absorber 4 in addition and prepare (manufacture) good back sheet 3 in addition Backing material piece supplies to main body manufacture device 57.These composite sheets P10, absorber and backing material piece stacked gradually and It is engaged with each other, cuts into product one by one, so as to is continuously formed absorbent commodity P1.

As described above, absorbent commodity can be manufactured.

As described above, in the manufacture method of this absorbent commodity, in formation process S2, in the 1st P12b A face 20a formed convex portion 21, at another face (back side) 20b formed recess 22.Afterwards, in bonding process S5, utilize 1st roller 52 maintains the shape of convex portion 21, and the shape of the recess 22 separated with the 2nd roller 53 is due to the 1st P12c composition fiber Screen resilience (or elastic force) and be alleviated, recess 22 turns into smaller (shallow and narrow) pit, the pit and the 2nd P13c profit Engaged with junction surface 14.So, by by the pit (recess 22 recovers the pit to be formed), i.e. the 1st P12c another The region corresponding with convex portion 21 and the 2nd P13c engagement in the 20b of face, can suppress may be at the 1st P12c and the 2nd Caused gap between P13c, i.e., can suppress the hollow area to be formed in convex portion 21.It is solid thereby, it is possible to form convex portion 21 Shape.In addition, the region corresponding with convex portion 21 and the 2nd 13c in the 1st P12c another face 20b are not only in shape Contacted on shape, and engaged and (illustrated using junction surface 14：Bonding agent), therefore, it is possible to suppress in process afterwards the 1st P12c is partly separated with the 2nd P13c and subsequently is formed hollow area.That is, can suppress in composite sheet P10 convex portion 21 Interior formation hollow area, thus, it is possible to make convex portion 21 turn into solid.Thereby, it is possible to take into account brought by solid convex portion 21 it is soft The raising of soft, skin sense of touch and liquid permeability.

In addition, the rotation axis direction along roller formed with teeth portion, groove portion and formed on piece along transverse direction CD In the case of having convex portion, convex portion is formed in formation process, it is also difficult to utilized in process afterwards along conveying direction MD puts on the tension force of piece to maintain the shape of convex portion.Therefore, in the preferred configuration of present embodiment, in the 1st roller the 52, the 2nd Roller 53 and engagement roller 56, teeth portion and groove portion are formed along its direction of rotation, thus, is formed along conveying direction MD in the 1st P12 Convex portion 21.Thus, in the process in bonding process, afterwards, the shape of the convex portion 21 can be made using conveying direction MD tension force It is difficult to flatten, can easily maintains.That is, the solid maintenance liquid permeability of convex portion can be utilized and maintain to be brought by the shape of convex portion Flexibility, skin sense of touch.

In the preferred configuration of present embodiment, the 2nd roller 53 is rotated with the state rotated together with the 1st P12b.Therefore, Without the adjustment of the speed corresponding with the speed of the 1st roller 52 of the 2nd roller 53, it becomes possible to make the 1st P12b be difficult to produce fold, Contracting.Thereby, it is possible to more reliably suppress to produce fold in the 1st P12b, in bonding process S, can more reliably make convex Portion forms solid.

In the further preferred form of present embodiment, preferably the top of the vertical of the 2nd roller 53 be located at than By the imaginary horizontal plane of the top of the vertical of the 1st roller 52 (in the example in figure 3, be include the 2nd P13a~ P13c, composite sheet P10 plane) by vertical downside position.Its reason is as described below.As described above, in the presence of the 1st The temperature of roller 52 is the situation of above-mentioned 1st predetermined temperature higher than normal temperature.Therefore, the air around the 1st roller 52 is by the 1st roller 52 heat heating, turns into low-density, mobile to vertical top.So, have can for the object above the vertical of the 1st roller 52 The temperature with the same degree of the 1st roller 52 can be turned into.But, in vertical, by the way that the 2nd roller 53 is configured at than the 1st roller 52 Position on the lower, can prevent the temperature of the 2nd roller 53 is influenceed by the 1st roller 52 and turns into the temperature with the same degree of the 1st roller 52. Thus, in formation process S2, after being formed as concave shape in the 1st P12b another face, recess can be made easily extensive The multiple shape into general planar.As a result, can make not produce gap between the 1st and the 2nd, can more reliably make compound Piece P10 convex portion turns into solid.

Grammes per square metre, thickness and the fibre density of piece in above-mentioned embodiment are obtained using following methods.

(1) grammes per square metre of piece：The size that piece is cut out to 5cm × 5cm is used as sample, dry under the atmosphere more than 100 DEG C Quality is measured after dry processing.The quality divided by the area of sample that measure and calculate the grammes per square metre of sample.By 10 samples The average value of grammes per square metre be set to the grammes per square metre of piece.

(2) thickness of piece：Using possessing 15cm²The thickness gauge of gauge head (Dae Young Co., Ltd.'s smart device of chemistry makes made Model FS-60DS), with 3g/cm²The condition of measuring load the thickness of piece is measured.In 1 sample to 3 at thickness It is measured, the average value of thickness at 3 is set to the thickness of piece.

(3) fibre density of piece：The fibre density of piece is that method described above is obtained into the grammes per square metre of the piece come divided by by above-mentioned Method is obtained the thickness of the piece come and calculated.

The absorbent commodity of the present invention is not restricted to above-mentioned each embodiment, is not departing from the purpose of the present invention, master In the range of purport can it is appropriately combined, change etc..

Description of reference numerals

1st, absorbent commodity；52nd, the 1st roller；53rd, the 2nd roller；P10, composite sheet；P12, the 1st；P13, the 2nd.

Claims

1. a kind of manufacture method of absorbent commodity, the absorbent commodity have used composite sheet, the composite sheet possesses：1st, its In a face formed with multiple convex portions；And the 2nd, it is laminated in described 1st another face, wherein,

The manufacture method of the absorbent commodity possesses following process：

Volume recovers process, in the volume recovers process, described 1st is heat-treated and recovers volume；

Formation process, in the formation process, the 1st teeth portion and groove portion to the 1st roller of the heat treatment will be carried out The region being engaged with each other with the teeth portion and groove portion of the 2nd roller supplies, and described 1st contacted with the 1st roller described one Individual face forms multiple convex portions, contacted at described 1st with the 2nd roller described in another face form multiple recesses；And

Bonding process, in the bonding process, to maintain the shape that one face of described 1st and the 1st roller contact The respective inside of state and the multiple convex portion, which turns into solid mode, makes described 1st to separate and described more with the 2nd roller Another described face that the shape of individual recess has relaxed engages with a face of described 2nd, and forms the composite sheet,

Junction surface between described 1st another described face and one face of described 2nd weighs in a thickness direction It is laminated on the region corresponding with the multiple convex portion difference of described 1st.

2. the manufacture method of absorbent commodity according to claim 1, wherein,

Described 1st another described face is anti-wire side when manufacturing described 1st,

One face of described 2nd is anti-wire side when manufacturing described 2nd,

In the bonding process, the anti-wire side of described 1st and the anti-wire side of described 2nd engage.

3. the manufacture method of absorbent commodity according to claim 1 or 2, wherein,

The multiple convex portion is continuously extended along the conveying direction MD of described 1st, that in the multiple convex portion Between this adjacent convex portion, being continuously extended along the conveying direction MD has base portion,

The manufacture method of the absorbent commodity is also equipped with intermittent engagement process, in the intermittent engagement process, in the base portion In, the compression that is interrupted along the conveying direction MD, so as to by described 1st and the 2nd chip bonding.

4. according to the manufacture method of absorbent commodity according to any one of claims 1 to 3, wherein,

The temperature of the outer peripheral face including the teeth portion of 1st roller is higher than normal temperature and than forming in the material of described 1st The minimum material of fusing point low-melting 1st predetermined temperature.

5. the manufacture method of absorbent commodity according to claim 4, wherein,

The temperature of the outer peripheral face including the teeth portion of 2nd roller is normal temperature less than the 2nd of the 1st predetermined temperature Predetermined temperature.

6. the manufacture method of the absorbent commodity according to claim 4 or 5, wherein,

The top of the vertical of 2nd roller is located at the imaginary of the top than the vertical by the 1st roller Position of the horizontal plane by the downside of vertical.

7. according to the manufacture method of absorbent commodity according to any one of claims 1 to 6, wherein,

The material of the outer peripheral face including the teeth portion of 2nd roller is by dielectric formation.

8. according to the manufacture method of absorbent commodity according to any one of claims 1 to 7, wherein,

1st roller and the 2nd roller be continuously extended along direction of rotation on outer peripheral face respectively have the teeth portion and The groove portion,

In the formation process, by described 1st to the mesh regional supply speed be the 1st roller outer circular velocity with Under.

9. according to the manufacture method of absorbent commodity according to any one of claims 1 to 8, wherein,

In the formation process, the periphery speed of the 2nd roller is faster than the outer circular velocity of the 1st roller.

10. according to the manufacture method of absorbent commodity according to any one of claims 1 to 9, wherein,

In the formation process, described 1st institute that the 2nd roller is pressed at the top of the teeth portion of the 1st roller State the bottom of groove portion and compressed, do not pressed on the groove portion of the 1st roller at the top of the teeth portion of the 2nd roller Bottom and be uncompressed.

11. according to the manufacture method of absorbent commodity according to any one of claims 1 to 10, wherein,

2nd roller is rotated with the state rotated together with described 1st.