CN107889456B - The manufacturing method of absorbent commodity - Google Patents

The manufacturing method of absorbent commodity Download PDF

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Publication number
CN107889456B
CN107889456B CN201680003357.2A CN201680003357A CN107889456B CN 107889456 B CN107889456 B CN 107889456B CN 201680003357 A CN201680003357 A CN 201680003357A CN 107889456 B CN107889456 B CN 107889456B
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roller
face
manufacturing
absorbent commodity
protrusion
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CN107889456A (en
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河守良太
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Unicharm Corp
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Unicharm Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Absorbent commodity (1), which uses, has the composite sheet for being formed with the 1st of multiple protrusions and being laminated in the 2nd of the 1st.The manufacturing method of absorbent commodity includes: the process for being heat-treated to the 1st (P12) and restoring volume；The process that the region (B1) that 1st is engaged with each other to the 1st roller (52) and the 2nd roller (53) is supplied, forms multiple protrusions in the 1st face contacted with the 1st roller, forms multiple recess portions in the 1st another face contacted with the 2nd roller；And it is contacted with the 1st roller with the 1st face and each protrusion becomes solid mode and separates 1st and the 2nd roller and another face that the shape of multiple recess portions has mitigated and the 2nd (P13) face bonding, the process of formation composite sheet (P10).At this point, the joint portion between the 1st and the 2nd is overlapped in region corresponding with each protrusion in a thickness direction.

Description

The manufacturing method of absorbent commodity
Technical field
The present invention relates to the manufacturing methods of absorbent commodity.
Background technique
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 characteristic required by composite sheet, exist Liquid permeability etc., but as characteristic required by the composite sheet that especially contacted with the skin of wearer, it is (slow that there is also flexibilities 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 far from the base portion The composite sheet of the protrusion of the direction in face multiple raised line shapes outstanding or island.The composite sheet of the protrusion with raised line shape or island Protrusion it is softer, be easy to skin face paste close, accordingly, there exist wearers to be easy to feel that flexibility, skin sense of touch are good Tendency.Especially, the bulk recovery piece for restoring volume using heat treatment can be passed through, shape the phenomenon that being restored using volume In composite sheet at protrusion, it is compared with other methods compared with flexibility, skin sense of touch further increase, and therefore, are ground Study carefully.
The manufacturing method for having used the composite sheet of such bulk recovery piece is disclosed in patent document 1.In composite sheet Manufacturing method in, two pieces locally engage and form many joint portions, and in piece other than joint portion Part is formed with protrusion.In this manufacturing method, at least one in two panels uses the body that can make volume recovery by being heat-treated Restorative of product.Also, the engaging portion into a pair of of tooth space roller supplies one (bulk recovery piece) in two pieces.It connects down , the piece is made directly to keep the state along the week face of a roller of a pair of rolls and move 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.At this point, it is extensive to manufacture volume Anti- wire side when renaturation piece is set as the opposite face between piece that will be overlapped, restores before the engagement of two panels or to volume after engagement Property piece implement heat treatment.At this point, a piece of (the bulk recovery piece) in two pieces is formed with protrusion, two pieces are other than protrusion Position engage.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2008-155602 bulletin
Summary of the invention
Problems to be solved by the invention
But, the composite sheet as caused by the manufacturing method system of patent document 1 has fibre density than surrounding in protrusion 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 protrusion, if the surface patch that such as composite sheet is used in absorbent commodity, is drained Liquid to the surface of the skin side of surface patch is absorbed by protrusion, but in protrusion, which can not move in hollow area, Region around hollow area, i.e. region near the surface of protrusion are mobile.Therefore, the liquid in composite sheet, in protrusion The movement routine of body is limited by hollow area, and the liquid permeability of composite sheet is likely to decrease.In other words, liquid is interfered with protrusion Therefore mobile such hollow area is formed in the composite sheet of protrusion the phenomenon that being restored using volume, flexibility, flesh Skin sense of touch improves, but liquid permeability is likely to decrease.
The purpose of the present invention is to provide a kind of composite sheets for having used the phenomenon that restoring using volume and having formed protrusion The manufacturing method of absorbent commodity and be the flexibility that can take into account composite sheet, skin sense of touch and liquid permeability absorbent commodity Manufacturing method.
The solution to the problem
The manufacturing method of absorbent commodity of the invention is as described below.(1) a kind of manufacturing method of absorbent commodity, should Absorbent commodity has used composite sheet, which has: the 1st, being formed with multiple protrusions in a face；And the 2nd, It is laminated in described 1st another face, and the manufacturing method of the absorbent commodity has: volume restores process, in the volume Restore to be heat-treated described 1st in process and restore 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 of engagement supplies, and forms multiple protrusions in the described 1st one face contacted with the 1st roller, described Another face described in 1st contact with the 2nd roller forms multiple recess portions；And bonding process, in the bonding process, With maintain the 1st one face and the respective inside of state and the multiple protrusion that the 1st roller contacts at For solid mode by described 1st separated with the 2nd roller and the shape of the multiple recess portion mitigated it is described another A face and described 2nd face bonding, and the composite sheet is formed, described 1st another described face and the described 2nd Joint portion between one face of piece is overlapped in described 1st opposite respectively with the multiple protrusion in a thickness direction The region answered.
In the manufacturing method of this absorbent commodity, restores to restore the 1st volume in process in volume, forming work In sequence, by clamping the 1st between the 1st roller and the 2nd roller, protrusion is formed in the 1st face, in another face (back side) Form recess portion.Later, in bonding process, the shape for the recess portion that the 1st roller maintains the shape of protrusion and separates with the 2nd roller is utilized Using the 1st itself composition fiber screen resilience (or elastic force) and mitigate, become (shallower and relatively narrow) smaller than recess portion Pit, the pit and the 2nd utilization joint portion engage.In this way, 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 are able to suppress and generate gap between the 1st and the 2nd, can inhibit in protrusion Interior formation hollow area.Thereby, it is possible to protrusion is formed as solid shape.In addition, on the 1st another face and protrusion Corresponding region and the 2nd not only contact in shape, but also are engaged and (illustrated: bonding agent), therefore, can prevent at it The 1st and the 2nd separate and form hollow area subsequently in process afterwards.That is, after being able to suppress in the protrusion of composite sheet Hollow area is formed continuously, thus, it is possible to maintain protrusion at solid.It is soft by solid protrusion bring thereby, it is possible to take into account Soft, skin sense of touch and liquid permeability raising.
It is also possible to the manufacturing method of the absorbent commodity according to documented by above-mentioned (1), in the manufacture of this absorbent commodity In method (2), described 1st another described face be manufacture described 1st when anti-wire side, described the one of described 2nd A face is anti-wire side when manufacturing described 2nd, in the bonding process, the described 1st anti-wire side and the described 2nd The anti-wire side of piece engages.
The piece for manufacturing fiber accumulations in the such filament support of net has when manufacturing piece and net (fiber support Body) the anti-wire side of face i.e. wire side and the side opposite with the wire side that contacts.In piece in the part of anti-wire side side, Compared with by the part of wire side side, the fibre density for constituting fiber is low, constitutes fiber and is easy movement, thus, volume is restored to hold Easily, it is easy to fluff.Therefore, in the manufacturing 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 the 1st face, the i.e. part of wire side side, fibre density is higher, therefore, Yu When forming protrusion in formation process, the composition fiber for the plastic deformations such as bend is more.Even as a result, in formation process Later, the shape of protrusion also can more easily be maintained.On the other hand, the 1st another face, i.e. anti-wire side side part In, fibre density is lower, therefore, when forming recess portion in formation process, the composition fibers of the plastic deformations such as bend compared with It is few.In addition, restoring with making sufficiently bulky degree using heat treatment, it is easy to flexible deformation along thickness direction.As a result, if connecing It closes the 2nd roller in process to separate with recess portion, then using the screen resilience (or elastic force) of the composition fiber of recess portion, can make to constitute fiber Substantially restore original state, the shape of recess portion can be made to mitigate and reduce pit, and fluff.Thereby, it is possible at the 1st A face formed protrusion and make another face become lesser pit.Also, at the 2nd in the part of anti-wire side side, Fibre density is lower, therefore is easily deformed, therefore, can be by the 2nd part and the 1st anti-wire side by anti-wire side side Part easily engages.At this point, the composition fiber on the joint surface of two panels can be easily moved each other, it therefore, can be more reliable Ground inhibition forms hollow area in protrusion.That is, can more reliably inhibit to form hollow area, energy in the protrusion of composite sheet It is enough that solid construction is more reliably formed in protrusion.
It is also possible to the manufacturing method of the absorbent commodity according to documented by above-mentioned (1) or (2), in this absorbent commodity Manufacturing method (3) in, the multiple protrusion is continuously extended along the 1st conveying direction MD, described more Between protrusion adjacent to each other in a protrusion, being continuously extended along the conveying direction MD has base portion, the absorption The manufacturing method of property article is also equipped with intermittent engagement process, in the intermittent engagement process, in the base portion, along described defeated Direction MD is sent to carry out intermittent compression, thus by described 1st and the 2nd chip bonding.
By the 1st and 2 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 only the composition fiber in the region on each surface remains engaged with.In this case, the 1st adjacent Region between protrusion, not forming the base portion (recess portion) of protrusion, volume is restored naturally using the 1st elastic force etc., the 1 concave-convex relaxation disappears, and flexibility etc. is likely to decrease.Therefore, in the manufacturing method of this absorbent commodity, by right 1st base portion carries out intermittent compression (deflation), and with the 2nd chip bonding.In this way, on the periphery of protrusion, by making the 1st Base portion and the 2nd discontinuously engage, and can more stably form the shape of protrusion.Thereby, it is possible to more stably be formed in protrusion Solid construction.In addition, the 1st and the 2nd is compressed in the region around protrusion, and therefore, the part of the lower part of protrusion To compression unit side, i.e. the 2nd side is stretched, and is pressed so that protrusion is whole to the 2nd.Moreover, in the 2nd with the 1st piece The opposite region in protrusion is close to the 1st side.Thus, the bottom (the 1st another face) of protrusion presses on one of the 2nd Face can also eliminate the gap even if there are gaps between the 1st and the 2nd.It is more solid in protrusion thereby, it is possible to make. In addition, the 1st base portion is integrally hardened in the case where joint continuity, it is possible to create skin sense of touch is deteriorated or liquid is difficult to Engagement and melt the state of affairs of partial movement changed, but in this manufacturing method, engagement be it is intermittent, therefore, can be avoided that The state of affairs of sample.
It is also possible to the manufacturing method of the absorbent commodity according to documented by any one of above-mentioned (1)~(3), in this suction In the manufacturing method (4) of the property received article, the temperature of the outer peripheral surface including the teeth portion of the 1st roller is higher than room temperature and compares structure At low-melting 1st predetermined temperature of the minimum material of the fusing point in the 1st material.
In the manufacturing method of this absorbent commodity, the outer peripheral surface of the 1st roller has the 1st above-mentioned predetermined temperature, i.e., to the 1st 1st face of piece is heated, and therefore, the 1st the 1st face can be changed places figuration into convex form.Thereby, it is possible to the 1st One face of piece is stably formed the shape of multiple protrusions.Using the stabilisation of the shape of the protrusion, can more stably be formed Solid construction in protrusion.
It is also possible to the manufacturing method of the absorbent commodity according to documented by above-mentioned (4), in the manufacture of this absorbent commodity In method (5), the temperature of the outer peripheral surface including the teeth portion of the 2nd roller is room temperature more than and less than the described 1st predetermined temperature 2nd predetermined temperature of degree.
If the temperature of the outer peripheral surface of the 2nd roller is the 1st above-mentioned predetermined temperature or more, stablize in the 1st another face Ground forms recess portion.So, even if the 1st another face and the outer peripheral surface of the 2nd roller separate, the shape of recess portion is also directly residual It deposits and generates gap between the 1st and the 2nd, protrusion is possible to not become solid.Therefore, in the system of this absorbent commodity It makes in method, in formation process, restores the 2nd roller of 2nd predetermined temperature lower than the 1st above-mentioned predetermined temperature and volume Protrusion inside abut.Thereby, it is possible to maintain to restore at volume by the 1st another face contacted with the 2nd roller In the state of directly form concave shape, can be by the 1st another face in the state for maintaining 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 surface of the 2nd roller separate in bonding process, recess portion can using the screen resilience mitigate at The pit smaller than the recess portion.Thereby, it is possible to which the pit and the 2nd are steadily engaged, can more reliably inhibit the 1st with The state of affairs in gap is generated between 2nd.That is, can more reliably inhibit to form hollow area in the protrusion of composite sheet, thus, Protrusion can be more reliably set to become solid.
It is also possible to the manufacturing method of the absorbent commodity according to documented by above-mentioned (4) or (5), in this absorbent commodity Manufacturing method (6) in, the top of the vertical direction of the 2nd roller is located at most than the vertical direction by the 1st roller Position of the imaginary horizontal plane of upper end by the downside of vertical direction.
The temperature of 1st roller is the above-mentioned predetermined temperature higher than room temperature.Therefore, the object above the vertical of the 1st roller Due to the 1st roller heat and be heated, it is possible to the temperature as the temperature same degree with the 1st roller.Therefore, in this absorbability object In the manufacturing method of product, in vertical direction, the 2nd roller is configured to the position than the 1st roller on the lower.Therefore, the 2nd can be prevented The temperature of roller is influenced by the 1st roller and becomes the temperature with the temperature same degree of the 1st roller.As a result, in formation process After 1st another face forms recess portion, the recess portion can be made easily to revert to the shape of general planar.As a result, Gap can not be generated between the 1st and the 2nd.That is, can more reliably inhibit to be formed in the protrusion of composite sheet hollow Region, thus, it is possible to which protrusion is more reliably made to become solid.
It is also possible to the manufacturing method of the absorbent commodity according to documented by any one of above-mentioned (1)~(6), in this suction In the manufacturing method (7) of the property received article, the material of the outer peripheral surface including the teeth portion of the 2nd roller is by dielectric formation.
In the manufacturing method of this absorbent commodity, the material of the outer peripheral surface of the 2nd roller is by dielectric formation.Therefore, the 1st When another face of piece and the outer peripheral surface of the 2nd roller separate, the composition fiber in the 1st another face is in the periphery due to the 2nd roller Friction between face and the 1st and be lifted under the action of the electrostatic that generates, recess portion can be made to become smaller pit or more flat Smooth shape.Thereby, it is possible to more reliably engage the 1st and the 2nd, do not generate gap between two panels.As a result, energy It is enough more reliably to inhibit to form hollow area in the protrusion of composite sheet, thus, it is possible to which protrusion is more reliably made to become solid.
It is also possible to the manufacturing method of the absorbent commodity according to documented by any one of above-mentioned (1)~(7), in this suction In the manufacturing method (8) of the property received article, the 1st roller and the 2nd roller respectively on outer peripheral surface 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 the outer circular velocity of the 1st roller or less.
If the 1st feed speed (conveying speed) more than the outer circular velocity of the 1st roller, causes in the 1st generation fold. Therefore, in the manufacturing method of this absorbent commodity, by making the 1st feed speed (conveying speed) be the periphery of the 1st roller Speed more reliably makes protrusion be formed as solid hereinafter, can be more reliably prevented from the 1st generation fold.
It is also possible to the manufacturing method of the absorbent commodity according to documented by any one of above-mentioned (1)~(8), in this suction In the manufacturing 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 manufacturing method of this absorbent commodity, the outer circular velocity of the 1st roller of periphery speed ratio of the 2nd roller is fast, therefore, the 2 rollers are in the 1st on piece sliding (Japanese: wiping the upper げ Ru of り) on the 1st roller, therefore, are capable of increasing the 1st another surface side of leaning on Partial deflection.Thereby, it is possible to be easy to make the 1st to be more easily moved deformation by the composition fiber of another surface side, because This, can more reliably inhibit the state of affairs for generating gap between the 1st and the 2nd, form sky in the protrusion of composite sheet Heart district domain, thus, it is possible to which protrusion is more reliably made to become solid.
It is also possible to the manufacturing method of the absorbent commodity according to documented by any one of above-mentioned (1)~(9), in this suction In the manufacturing 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 is 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 manufacturing 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 between protrusion adjacent to each other can be stably formed in a face.In addition, the 1st It is not uncompressed by the bottom that presses on the groove portion of the 1st roller at the top of the teeth portion of the 2nd roller, therefore, recess portion can be temporarily forming And the formation of auxiliary protrusion, further, it is possible to be easy to be carried out the recovery of shape by being temporarily forming the elastic force in the recess portion in protrusion (or volume recovery).Thereby, it is possible to be stably formed the shape of protrusion, further, it is possible to inhibit the 1st and the 2nd to separate and produce Raw gap.It is able to suppress and forms hollow area in the protrusion of composite sheet, protrusion can be made to become solid.
It is also possible to the manufacturing method of the absorbent commodity according to documented by any one of above-mentioned (1)~(10), in this suction In the manufacturing method (11) of the property received article, the 2nd roller is revolved with the state for rotating together (Japanese: even れ returns り) with described 1st Turn.
In the manufacturing method of this absorbent commodity, the 2nd roller is correspondingly rotated with the 1st shift amount, therefore, without The adjustment of the speed of 2nd roller, it will be able to be difficult to generate fold, reduced amplitude at the 1st.Thereby, it is possible to more reliably inhibit at the 1st Fold is generated, so that protrusion is formed solid.
The effect of invention
In accordance with the invention it is possible to a kind of manufacture for the absorbent commodity for providing the phenomenon that restoring using volume and forming protrusion Method and be the flexibility that can take into account composite sheet, skin sense of touch and liquid permeability absorbent commodity manufacturing method.
Detailed description of the invention
Fig. 1 is the figure for indicating a part of the configuration example of absorbent commodity of embodiment.
Fig. 2 is the figure for indicating the configuration example of the surface patch of absorbent commodity of embodiment.
Fig. 3 is the figure for schematically showing the configuration example of the manufacturing device of absorbent commodity of embodiment.
Fig. 4 is the figure for schematically showing the configuration example of roller of manufacturing device.
Fig. 5 is the figure for schematically illustrating the manufacturing method of absorbent commodity of embodiment.
Fig. 6 is the figure for schematically illustrating the manufacturing method of absorbent commodity of embodiment.
Fig. 7 is the figure for schematically illustrating the manufacturing method of absorbent commodity of embodiment.
Fig. 8 is the figure for schematically illustrating the manufacturing method of absorbent commodity of embodiment.
Specific embodiment
Referring to attached drawing, the absorbent commodity of present embodiment is illustrated by taking sanitary napkin as an example.Wherein, make For the type and purposes of absorbent commodity, be not particularly limited, for example, can enumerate panty liner, disposable diaper (banding pattern, Pants type), incontinence pad, the amenities physiological articles such as absorbing sweat piece, either these are taking human as object, are also possible to dote on The animal in addition to human such as object is object.The liquid of absorption object as the absorbent commodity is not particularly limited, example Liquid excreta, the body fluid of wearer can such as be enumerated.
Fig. 1 is the figure for indicating the configuration example of absorbent commodity 1, indicates bowing in the state of expanding absorbent commodity 1 View.Absorbent commodity (sanitary napkin) 1 has orthogonal length direction L, width direction W and thickness direction T, tool What the main part 1A for alongst L extension and the substantially central portion in length direction L extended to the two sides of width direction W A pair of of alar part 1B, 1B.In addition, absorbent commodity 1 has in the center of width direction W and alongst L extension Entreat axis CL and across a pair of of alar part 1B, 1B length direction L center and along width direction 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 direction W and thickness direction T and the absorbent commodity 1 then discussed Each material length direction, width direction and thickness direction it is consistent, therefore, hereinafter, absorbent commodity 1 and its each material share Length direction L, width direction W and thickness direction T.In addition, " vertical view " is unfolded from referring to from upper surface side along thickness direction T State absorbent commodity 1." skin side " and " non-skin side ", which refers respectively to wear in the wearer of absorbent commodity 1, inhales When the property received article 1, side relatively close to the skin face of wearer and the skin face far from wearer in the thickness directiont Side.It will be towards the direction of central axial line CL and the direction far from central axial line CL is set to the inside of width direction W and outer The direction of side.The inside of length direction L will be set to towards the direction in the direction of central axial line CW and separate central axial line CW With the direction in outside.These definition are also common to each material of absorbent commodity 1.In addition, in the present specification, about subsequent opinion The protrusion stated, " solid " under such circumstances, refer to not having and interfere liquid mobile such hollow area in protrusion (fine Tie up density space more significant lower compared with the fibre density of surrounding).
Absorbent commodity 1 includes 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, woven fabric, the conjunction for being formed with liquid drain hole can be enumerated At resin film, their the arbitrary liquid-permeable sheet such as 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 nonwoven of opaque liquid can be enumerated The arbitrary opaque liquid piece such as cloth.Overleaf the non-skin side of piece 3 can also be laminated for reinforcing back sheet 3 and improving feel Outsourcing load 9.As outsourcing load 9, material same as back sheet 3, the non-woven fabrics of hydrophobicity, synthetic resin can be enumerated Film, their the arbitrary hydrophobicity piece such as 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 enumerated.4 benefit of absorber It is 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 It closes.The bonding agent of engagement between surface patch 2, absorber 4 and back sheet 3 is able to use usually may be used in absorbent commodity 1 The well 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 indicate embodiment compound The figure of the configuration example of piece 10 (surface patch 2).(a) of Fig. 2 is the partial top view of composite sheet 10, and (b) of Fig. 2 is Fig. 2 (a) IIb-IIb ' cross-sectional view.Composite sheet 10 has the 1st 12 and the 2nd 13.Wherein, the direction in thickness direction T is set as upward, Other direction is set as downward.
Have as the 1st upper surface 12E (face) in the face upward on thickness direction T and as downward for 1st 12 Face the 1st lower surface 12F (another face), be alongst L and width direction W extension piece.1st 12 the 1st Upper surface 12E includes the multiple protrusions 15 and alongst L continuously extends that alongst L is continuously extended The base portion 16 being set between protrusion 15 adjacent to each other.Protrusion 15 can be known as the slave base portion 16 of the 1st upper surface 12E in thickness Protruding portion outstanding upward on the T of direction.It is engaged using joint portion 14 with the 2nd 13 in the 1st lower surface 12F for 1st 12.As convex The size in portion 15 can enumerate such as width 0.25mm~5mm, height 0.25mm~5mm, spacing 0.5mm~10mm.
Have for 2nd 13 as the 2nd upper surface 13E (face) in the face upward on thickness direction T and as downward Face the 2nd lower surface 13F (another face), be alongst L and width direction W extension piece.2nd 13 the 2nd Upper surface 13E is engaged using joint portion 14 with the 1st 12.2nd 13 can also be at protrusion 15 in the thickness directiont upward slightly It is micro- to heave.That is, the boundary being also possible between the 1st 12 and the 2nd 13 is slightly convex at protrusion 15.
Joint portion 14 engages the 1st 12 the 1st lower surface 12F and the 2nd 13 the 2nd upper surface 13E, in this embodiment party It is to illustrate into the bonding agent of hot-melt adhesive in formula, does not express in figure, but is upwardly and downwardly spread along thickness direction T. Joint portion 14 is overlapped in the 1st 12 in the thickness directiont and with multiple protrusions 15 distinguishes corresponding region.In other words, from thickness When spending the top observation of direction T, overlooking, at least part at joint portion 14 is contained at least one of the region of each protrusion 15 Point.Wherein, it as joint portion 14, as long as the 1st and the 2nd 13 can be engaged, is not particularly limited, is also possible to example It such as applies relatively thin conductive material and makes the 1st and the 2nd 13 thermal weldings using induction heating.
In this way, using joint portion 14 by the 2nd upper surface of the 1st lower surface (another face) 12F and the 2nd 13 of protrusion 15 (face) 13E engagement, therefore, is able to suppress and forms gap between protrusion 15 and the 2nd 13, can make to become in protrusion 15 Solid shape.Thereby, it is possible to make protrusion 15 integrally to become the movement routine of liquid, the liquid permeability of composite sheet 10 can be improved. In addition, being formed with the protrusion 15 of multiple raised line shapes in composite sheet 10, therefore, flexibility, the flesh that wearer is felt can be improved 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, protrusion 15 is solid Shape, therefore, from the viewpoint of liquid permeability, the 1st 12 the 1st lower surface 12F and the 2nd 13 the 2nd upper surface 13E The distance between be protrusion 15 the height in the thickness directiont away from base portion 16 5% within, within preferably 1%.
In the present embodiment, the pattern at joint portion 14 be alongst L extend and along width direction W each other The pattern (candy strip) for the multiple threadiness being arranged in parallel.As the size of candy strip, such as width 0.5mm can be enumerated ~2mm, spacing 1mm~4mm.Wherein, the pattern as joint portion 14, as long as being overlapped in the thickness directiont and 15 phase of protrusion Corresponding region, is just not particularly limited, and is also possible to Ω pattern, mesh pattern, spiral pattern.As long as in addition, above-mentioned each Pattern, just can also in the whole region of composite sheet 10, a small amount of region there are the region of protrusion 15 do not include joint portion 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 It is 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 direction W, it can also To be located at different position.In the present embodiment, about 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 1st 12 top and 2nd 13 lower section clamps and compresses and formed, and the 1st 12 and the 2nd 13 are engaged.In addition, composite sheet 10 can not also Has compression unit 17.
In the present embodiment, make fiber accumulations filament support as netting for the 1st 12 and manufacture, it will be at it The face contacted when manufacture with net (filament support) is known as wire side, and the face of the side opposite with the wire side is known as anti-wire side. 1st 12 the 1st upper surface 12E and the 1st lower surface 12F 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 It applies in mode, the 1st 12 anti-wire side and the 2nd 13 anti-wire side are engaged.
The grammes per square metre of protrusion 15 and base portion 16 in 1st 12 is roughly the same.Fibre of the fibre density of protrusion 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 protrusion 15 is lower, therefore, wears Person can feel flexibility.Both 1st 12 grammes per square metre and the 2nd 13 grammes per square metre both can be higher with one of them, can also It is identical.
1st 12 using liquid permeability and be can by it is scheduled heat treatment make volume restore bulk recovery piece. In absorbent commodity 1, the 1st 12 volumes are restored.As the piece of bulk recovery, can enumerate non-woven fabrics, such as hot wind without The non-woven fabrics of the liquid permeabilities such as woven fabric, air-laid nonwoven fabrics, needle punched non-woven fabrics, spunlace non-woven cloth.As grammes per square metre, example can be enumerated Such as 10g/m2~200g/m2.In addition, the fibre of such as Polyester, polyolefin can be enumerated as the 1st 12 composition fiber Dimension or their composite fibre.As composite fibre, such as polyethylene terephthalate (PET)/polyethylene can be enumerated (PE), the cores such as polypropylene (PP)/polyethylene (PE)/sheath construction fiber.In the present embodiment, using poly terephthalic acid second Diol ester (PET)/polyethylene (PE) core/sheath construction fiber.As the fiber number of fiber, for example, can enumerate 1dtex~ 20dtex。
As long as the 2nd 13 liquid permeability, the piece of bulk recovery just both can be used, can also restore without using volume The piece of property.In the present embodiment, from the viewpoint of for flexibility, using with the nothing of the 1st 12 identical bulk recoveries Woven fabric, i.e., the fiber of polyethylene terephthalate (PET)/polyethylene (PE) core/sheath construction.In absorbent commodity 1 In, the 2nd 13 volumes are restored.But the 2nd 13 also can be used and the 1st 12 different pieces.
Then, the composition of the manufacturing device 50 of the absorbent commodity of present embodiment 1 is illustrated.Fig. 3 is schematic Ground indicates the figure of the configuration example of the manufacturing device 50 of absorbent commodity 1.Fig. 4 is the structure for schematically showing the roller of manufacturing device 50 At the figure of example.Manufacturing device 50 has 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 manufacturing device 57.The conveying of material about composite sheet 10 etc., manufacturing device 50 With conveying direction MD, orthogonal with conveying direction MD and transverse direction CD along conveyor surface and with conveying direction MD and cross Pass through the orthogonal up and down direction TD of direction CD.Wherein, length direction, the width of the material (component) of composite sheet 10, composition composite sheet 10 It spends direction and thickness direction is identical as conveying direction MD, transverse direction CD and up and down direction TD.Thus, in composite sheet 10, structure In material at composite sheet 10, for length direction, width direction and thickness direction, also respectively using conveying direction MD, traverse Direction CD and up and down direction TD.
1st annealing device 51 is to carry out the heat-treating apparatus to the piece for wanting volume to restore using heat treatment.In this reality It applies in mode, the 1st annealing device 51 is supplied to the 1st 12 material and is to restore volume using scheduled heat treatment The 1st P12a.Also, the 1st annealing device 51 on one side along conveying direction MD convey the 1st P12a, while be directed at the 1st P12a carries out above-mentioned scheduled heat treatment and restores 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 while conveying.As heat treatment method, can enumerate for example to the 1st P12a's The method of any one face (illustrating: anti-wire side) or two sides supply hot wind.At this point, the 1st P12a is not contacted 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 P12a is placed in piece supporting member as conveyer belt to convey.As heat treatment method, can enumerate for example to the 1st P12a The face opposite with the face of contact chip supporting member (illustrate: anti-wire side) method of supply hot wind.Make to be supplied with hot wind at this time Face than another face be easy to volume restore.
The mesh regional of teeth portion and groove portion that piece both is held on by the 1st roller 52 and the 2nd roller 53 and in a face shape of piece At multiple protrusions, multiple recess portions are formed in another face.In the present embodiment, the 1st roller 52 is on the outer peripheral surface of the 1st roller 52 1st predetermined position and the 2nd roller configure facing with each otherly.1st roller 52 is equipped in its outer peripheral surface continuously to be extended along direction of rotation The multiple teeth portion 52a being arranged 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 in its outer peripheral surface equipped with the multiple teeth portion 53a being continuously extended along direction of rotation and along rotation side 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 in the mesh regional B1 that the two is engaged with each other clamps the 1st P12b and in a face of the 1st P12b Multiple protrusions are formed, form multiple recess portions in another face.The 1st roller 52 and the formation of the 2nd roller 53 have passed through mesh regional B1 as a result, The P12c of the 1st P12b, i.e. the 1st.The outer peripheral surface 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 surface is that for example metal (illustrates: stainless steel) system, and in the 2nd roller 53, at least outer peripheral surface is such as dielectric (illustrating: synthetic resin) system.
2nd annealing device 54 be to will using heat treatment carry out volume recovery piece carry out the heat-treating apparatus.? In present embodiment, as the 2nd 13 material, the 2nd P13a that scheduled heat treatment can be utilized to restore volume is used. 2nd annealing device 54 is supplied to the 2nd P13a, on one side along conveying direction MD convey the 2nd P13a, while be directed at the 2nd P13a carries out above-mentioned scheduled heat treatment and restores its volume, and forms the 2nd P13b.
2nd annealing device 54 in the same manner as the 1st annealing device 51, using such as niproll adjustment tension, simultaneously it is defeated The 2nd P13a is sent, is heat-treated using the method for hot wind is for example supplied to the two sides of the 2nd P13a.It wherein, can also be with Be, for example, the 2nd P13a is placed in piece supporting member as conveyer belt to convey, using to the 2nd P13a with The opposite face in the face of contact chip supporting member supplies the method for hot wind to be heat-treated.
Adhesive applicating apparatus 55 applies bonding agent in a face of the 2nd P13b in a predetermined pattern.Bonding agent is not There is special limitation, such as hot-melt adhesive can be enumerated.Scheduled pattern is set to, in rear process, in the another of the 1st P12c When one face and a face of the 2nd P13c are engaged, the region corresponding with multiple protrusions difference of the 1st P12c and viscous Agent is connect to be overlapped in the thickness directiont.Adhesive applicating apparatus 55 forms the 2nd P13b, i.e. for being coated with bonding agent as a result, 2 P13c.
Engagement roller 56 clamps two in the facing region that faces of the outer peripheral surface of engagement roller 5 and the teeth portion and groove portion of the 1st roller 52 It opens piece and makes its engagement.In the present embodiment, engagement roller 56 is different from the 1st predetermined position on the outer peripheral surface of the 1st roller 52 The 2nd predetermined position and the configuration facing with each other of the 1st roller 52.Engagement roller 56 is equipped in the base portion 56q of its outer peripheral surface respectively along rotation 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) The teeth portion 52a of pin 56p and the 1st roller 52 are configured in mode 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 in the two region B2 that faces facing with each other, make Another face of 1st P12c and a face of the 2nd P13c are in close contact and joint portion 14 (illustrating: bonding agent) are utilized to connect It closes.The 1st roller 52 and the 2nd roller 53 form laminated body, the i.e. composite sheet P10 of the 1st P12c and the 2nd P13c as a result,.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), therefore, can position upon compression form compression unit 17, in the case where not forming compression unit 17, engagement roller 56 It is also possible to backing roll (roller for not selling 56p).In this case, be able to suppress compression unit it is really up to the mark and to flexibility, skin touch A possibility that sense brings adverse effect.The outer peripheral surface of engagement roller 56 can be set to desired temperature.In engagement roller 56, at least Outer peripheral surface is that for example metal (illustrates: stainless steel) system.
Main body manufacturing 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) in addition preparing (manufacture) good material as absorber 4, in addition preparation (manufacture) is good The backing material piece (not shown) of material as back sheet 3 is stacked gradually and is engaged with each other, and cuts into production one by one Product.Main body manufacturing device 57 is continuously formed absorbent commodity P1 as a result,.For the forming method of absorbent commodity P1, as long as Composite sheet P10 is used for the material of surface patch 2, there is no particular limitation, be able to use well known various methods.
Then, it is illustrated referring to manufacturing method of Fig. 3~Fig. 8 to the absorbent commodity 1 of present embodiment.Wherein, Fig. 5 ~Fig. 8 is the cross-sectional view for schematically illustrating the manufacturing method of absorbent commodity of embodiment.This manufacturing method has the 1st body Product restores process S1 (Fig. 5), formation process S2 (Fig. 6~Fig. 7), the recovery of the 2nd volume process S3, working procedure of coating S4, bonding process S5 (Fig. 8) and main body manufacturing process S6.
Restore in process S1 in the 1st volume, is filled from the 1st P12a of the 1st material volume (not shown) uncoiling by the 1st heat treatment Set 51 heat treatments and volume is restored.The material of 1st P12a is identical as the 1st 12 material, in the present embodiment, using poly- Ethylene glycol terephthalate (PET)/polyethylene (PE) (high density) core/sheath construction fiber.At this point, such as (a) institute of Fig. 5 Show, a face 20a of the 1st P12a is the higher wire side of density for constituting fiber, another face 20b is the density for constituting fiber Lower anti-wire side.In the 1st annealing device 51, a face 20a and another face 20b of the 1st P12a is exposed to heat Wind or heating atmosphere.As a result, as shown in (b) of Fig. 5, the 1st P12a volume is restored and forms the 1st P12b.1st P12b with 1st P12a compares, grammes per square metre constant, but thickness thickens, and the density for constituting fiber reduces on the whole.In the situation Under, with the 1st P12a is placed in conveyer belt and make its in hot wind by the case where compared with, can be by the 1st P12a's Two sides is substantially equally exposed to hot wind or heating atmosphere, therefore, the whole more uniformly volume of the 1st P12a can be made to restore, Can more soft and skin sense of touch it is good.
The viewpoint that can serve as the material of the 1st P21a for consideration and restore its volume, heat treatment (hot wind at this time Or atmosphere) temperature be lower and than the (fusing point-than constituting the fusing point of the minimum material of fusing point in the material of the 1st P12a 50 degree) the high treatment temperature of temperature.From the viewpoint of making the 1st P12a steadily volume recovery, 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 a possibility that fusing point stated minimum material molten 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 glycol ester (PET)/polyethylene (PE) (high density) core/sheath construction fiber as the 1st P12a, high density are poly- The fusing point of ethylene (HDPE) is 140 DEG C, and treatment temperature is set as such as 130 DEG C.
Next, the 1st P12b is supplied to mesh regional B1 in formation process S2.As shown in fig. 6, utilizing the 1st roller 52 and the 2nd roller 53 forms multiple protrusions 21 in the face 20a of the 1st P12b contacted with the 1st roller 52, in adjacent protrusion 21 Between formed base portion 23, form multiple recess portions 22 in another face 20b of the 1st P12b contacted with the 2nd roller 53.As a result, Form the 1st P12c.In addition, the 1st upper surface 12E and the 1st lower surface of a face 20a and another face 20b and composite sheet 10 12F is corresponding, and protrusion 21 and base portion 23 are corresponding with protrusion 15 and base portion 16.
At this point, 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 The side a face 20b is squeezed towards the face side 20a, i.e. towards the bottom 52s of the groove portion 52b of the 1st roller 52.At this point, the 1st P12b Do not contacted with bottom 52s with the corresponding part top 53t of the teeth portion 53a of the 2nd roller 53, thus, the 1st P12b not with bottom 52s contact.In other words, the 1st P12b is relative to the non-backing of groove portion 52b.Wherein, " non-backing " not only include the 1st P12b with The case where there are gaps between the 52s of bottom include thes case where that the 1st 12b is contacted with bottom 52s, the 1st 12b is by bottom 52s The case where being mildly compressed into 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 the face side 20a towards another face side 20b, i.e. towards the bottom 53s of the 2nd roller 53 Pressure.At this point, the 1st P12b can both be contacted with bottom 53s, can not also contact.In other words, the 1st P12b both can be opposite It, can not also backing in groove portion 52b backing.Due to these, convex shape, i.e. can be formed in a face 20a of the 1st P12b Protrusion 21 can form base portion 23 between adjacent protrusion 21, and can be formed in another face 20b of the 1st P12b recessed Shape, i.e. recess portion 22.
In the present embodiment, as preferred form, the base portion 23 of the 1st P12b is by the top of the teeth portion 52a of the 1st roller 52 Portion 52t presses on the bottom 53s of the 2nd roller 53 and is compressed.Utilize the mutual hot melt of composition fiber carried out due to the compression It connects, be plastically deformed, the shape of base portion 23 is fixed.Thereby, it is possible to the bases of the two sides using the transverse direction CD in the protrusion 21 The protrusion 21 of the 1st P12b is steadily fixed in portion 23 essentially along up and down direction TD.As a result, it is possible to make in the 1st P12b The protrusion 21 by the face side 20a it is dimensionally stable.
At this point, the protrusion 21 of the 1st P12b is not pressed by the bottom 52s of the 1st roller 52 in the 1st P12b, do not pressed Contracting.Thus, do not occur to constitute the mutual thermal welding of fiber, plastic deformation, therefore, 22 reality of protrusion 21 and recess portion of the 1st P12b It is fixed in matter not along up and down direction TD.As a result, if the teeth portion 53a of the 2nd roller 53 is removed, in the screen resilience for constituting fiber Under the action of (or elastic force), the recess portion 22 of the 1st P12b is in can be back to by the state before teeth portion 53a occlusion.That is, can The multiple recess portions 22 for another face 20b of the 1st P12c contacted with the 2nd roller 53 are regarded as so that original state can be reverted to (not The state of recess) state be temporarily forming.
Later, the state that maintains a face 20a and the 1st roller 52 of the 1st P12c to contact and by the another of the 1st P12c A face 20b is pulled open from the 2nd roller 53.At this point, as shown in fig. 7, the 1st P12c a face 20a continue contacted with the 1st roller 52, because This, steadily maintains multiple protrusions 21 in the face 20a of the 1st P12c contacted with the 1st roller 52.On the other hand, the 1st Another face 20b of P12c is pulled open from the 2nd roller 53, therefore, another face 20b's of the 1st P12c contacted with the 2nd roller 53 Multiple recess portions 22 revert to original state (state not being recessed).
In the present embodiment, as preferred form, consider that the material that can serve as the 1st P21b, the 1st roller 52 include The temperature of the outer peripheral surface of teeth portion 52a is set as and material than constitute 1st piece 12, i.e. 1st piece P12b higher than room temperature (illustrating: 25 DEG C) Low-melting 1st predetermined temperature of the minimum material of fusing point in material.The temperature of the outer peripheral surface of the 1st roller 52 is improved if so, Then due to the effect of figuration, shape more stableization of the protrusion 21 of the face side 20a of the 1st P12b can be made.In addition to this, Part of a part accumulation of the heat of 1st roller 52 in the surface of one face 20a of ratio of the 1st P12b in the inner part, therefore, another Face 20b is pulled open from the 2nd roller 53 and recess portion 22 can utilize the effect restored by the volume that heat carries out when reverting to original state Fruit assists by restoring caused by the screen resilience (or elastic force).From the viewpoint of shape more stableization for making protrusion 21, 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 whole heating, multiple recess portions 22 of another face 20b of the 1st P12b 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, the material that can serve as the 1st P21b is considered, by the 2nd roller The temperature of 53 outer peripheral surface including teeth portion 53a is set as room temperature (illustrating: 25 DEG C) more than and less than the 1st above-mentioned predetermined temperature 2nd predetermined temperature.By so making the temperature of the outer peripheral surface of the 2nd roller 53 lower than the temperature of the outer peripheral surface of the 1st roller 52, the effect of figuration Fruit almost disappears, and the effect that volume is restored becomes strong, so as to make the 1st P12b another face 20b multiple recess portions 22 more Add and is easy to revert to original state.For recess portion 22 is further susceptible to from the viewpoint of reverting to original state, the 2nd is pre- The upper limit of temperature is determined preferably than the temperature of (fusing point -70 degree for the material that constitute fusing point in the material of the 1st P12b minimum) Low, the temperature more preferably than (fusing point -80 degree) is low.It is preferred that can not also be heated to the 2nd roller 53.
In this case, the temperature of the outer peripheral surface including teeth portion 52a of the 1st roller 52 and the 2nd roller 53 including teeth portion 53a Preferably 50 degree or more of the temperature difference of outer peripheral surface, more preferable 60 degree or more, further preferred 70 degree or more.By the way that the 1st roller is arranged The temperature difference of the outer peripheral surface of the temperature of 52 outer peripheral surface and the 2nd roller 53, can be more reliably and steadily the 1st P12b's One face 20a forms multiple protrusions 21, further, it is possible to which multiple recess portions 22 of another face 20b 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) are 140 DEG C.In this case, example If the temperature of the outer peripheral surface including teeth portion 52a of the 1st roller 52 is set as about 100 DEG C, the outer peripheral surface including teeth portion 53a of the 2nd roller 53 Temperature be set as room temperature and (illustrate: about 25 DEG C, wherein, slightly being heated by the heat of the 1st roller 52.), by the 1st roller 52 and the 2nd roller 53 The temperature difference of outer peripheral surface is set as about 75 DEG C.
In the present embodiment, as preferred form, the material of the outer peripheral surface 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, under the action of the electrostatic generated by the friction between the outer peripheral surface of the 2nd roller 53 and the 1st P12c, The composition fiber of another face 20b of 1st P12c is adsorbed on the 2nd roller 53.Another face 20b of 1st P12c as a result, It constitutes fiber to be lifted to the direction of the 2nd roller 53, recess portion 22 can be made to revert to smaller pit or flat shape.As a result, In the bonding process S5 then discussed, can between the 1st P12c and the 2nd 13c not further generate gap side Formula is by two material chip bondings.It is more solid in the protrusion 21 of composite sheet P10 as a result, it is possible to make.In addition, in the outer of the 1st roller 52 With in the case where temperature difference between circumferential surface and the outer peripheral surface of the 2nd roller 53, dielectric, particularly synthetic resin and metal phase ratio Compared with specific heat is larger, therefore, is difficult to make the temperature of the 2nd roller 53 to rise using the heat of the 1st roller 52, thus, it is possible to be easy to maintain the 1st Temperature difference between roller 52 and the outer peripheral surface of the 2nd roller 53.
Next, restoring in process S3 in the 2nd volume, in the same manner as the 1st volume shown in fig. 5 recovery process S1, 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 as the 2nd 13 material, in the present embodiment, uses polyethylene terephthalate (PET)/polyethylene (PE) core of (high density)/sheath construction fiber.At this point, a face 30a of the 2nd P13a be constitute fiber density it is lower Anti- wire side, another face 30b are the higher wire sides of density for constituting fiber.In the 2nd annealing device 54, the 2nd P13a's One face 30a and another face 30b are exposed to hot wind or heating atmosphere.The 2nd P13a carries out volume recovery and is formed as a result, 2nd P13b.2nd P13b is compared with the 2nd P13a, grammes per square metre constant, but thickness thickens, and the density for constituting fiber is whole It is reduced on body.In this case, the two sides of the 2nd P13a can be made substantially equally to be exposed to hot wind or heating atmosphere, it can Making the 2nd P13a, more uniformly volume is restored, 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 restoring for volume, the temperature of heat treatment at this time is than constituting in the material of the 2nd P13a 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 Use the fiber of polyethylene terephthalate (PET)/polyethylene (HDPE) core/sheath construction as the material of the 2nd P13a, The fusing point of high density polyethylene (HDPE) is 140 DEG C, and treatment temperature is set as 130 DEG C.
Next, the 2nd P13b after heat treatment is supplied to adhesive applicating apparatus 55 in working procedure of coating S4.Then, Bonding agent is applied in a face 30a of the 2nd P13b in a predetermined pattern.In the present embodiment, scheduled pattern is Fig. 2 institute Show such striped arranging at a predetermined interval along conveying direction MD extension, along transverse direction CD, with preset width Pattern.Scheduled pattern is set to, in rear process, in a face of another face 20b and the 2nd P13c of the 1st P12c When 30a is engaged, the 1st P12c's distinguishes corresponding region and bonding agent weight on TD in above-below direction with multiple protrusions 21 It is folded.Wherein, the width of the bonding agent at joint portion 14, interval both can be identical as the width of protrusion 21, interval, can also be different.
Next, the 1st P12c and the 2nd P13c is supplied in face of region B2 in bonding process S5.At this point, the 1st A face 20a of P12c maintains the state contacted with the 1st roller 52, and multiple protrusions 21 are maintained.On the other hand, the 1st P12c Another face 20b and the 2nd roller 53 separate, the shapes of multiple recess portions 22 mitigates (pit becomes smaller).Also, as shown in figure 8, utilizing The teeth portion 52a of the base portion 56q of engagement roller 56, pin 56p and the 1st roller 52, clamp the 1st P12c and the 2nd P13c, and the 1st A face 30a of another face 20b and the 2nd P13c of P12c is in close contact, and is engaged using joint portion 14 (bonding agent).It is formed Laminated body, that is, composite sheet P10 of 1st P12c and the 2nd P13c.Composite sheet P10 is substantially composite sheet 10.At this point, can incite somebody to action The distance between another face 20b of face 20a and the 2nd P13c of 1st P12c be set as protrusion 21 away from base portion 23 In above-below direction within 5% of the height on TD, within preferably 1%, thus, it is possible to which protrusion 21 is made to become solid shape.By This, improves the permeability of the liquid of protrusion 21 on the whole.
In the present embodiment, as preferred form, when engaging the 1st P12c and the 2nd P13c, by two panels Anti- wire side is engaged with each other.Therefore, in the part of a face 20a of the 1st P12c, i.e. wire side side, fibre density is higher, therefore, When forming protrusion 21 in formation process S2, the composition fiber for the plastic deformations such as bend is more.As a result, forming work After sequence S2, the shape of protrusion 21 also can be steadily maintained.In addition, another face 20b, i.e. anti-wire side side in the 1st P12c Part, fibre density is lower, and therefore, volume is largely restored, and is easy to along up and down direction TD flexible deformation.In addition, in When forming recess portion 22 in formation process S2, the composition fiber for the plastic deformations such as bend is less.As a result, if in engagement work The 2nd roller 53 leaves in sequence S5, then due to the screen resilience (or elastic force) of the composition fiber of recess portion 22, can make the shape of recess portion 22 It is smaller, and the wildness of recess portion 22 can be made.Thereby, it is possible to be stably formed protrusion 21 in a face 20a of the 1st P12c And another face 20b is made to become 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 the anti-wire side of P12c more easily engages.At this point, fibre density is lower in the part by anti-wire side side of two panels, because This, is easily deformed, and therefore, the composition fiber of two panels can be easily moved each other, can more reliably inhibit in protrusion 21 Form hollow area.That is, can more reliably inhibit to form hollow area in the protrusion of composite sheet P10 21, it can be more reliable Ground forms solid construction in protrusion 21.
In the present embodiment, as preferred form, the 1st P12c and the 2nd P13c is further by engagement roller 56 The teeth portion 52a clamping for selling 56p and the 1st roller 52, is compressed (deflation), forms compression unit 27 at the position having compressed.That is, the 1st In the base portion 23 of piece P12c, the compression of up and down direction TD is discontinuously carried out along conveying direction MD, therefore, the 1st P12c and the 2nd Piece P13c is discontinuously engaged, and the engagement of joint portion 14 (bonding agent) is also reinforced.In such a case it is possible to say bonding process S5 further includes intermittent engagement process other than carrying out the engagement of joint portion 14 (bonding agent), in the intermittent engagement process, benefit It is discontinuously engaged with compression unit 27 along conveying direction MD.In addition, compression unit 27 and the compression unit 17 of composite sheet 10 are opposite It answers.
By the way that compression unit 27 is arranged such, connect even if assuming to exist in the joint portion 14 of the 1st P12c and the 2nd P13c Weaker position is closed, the engagement of the compression unit 27 can also make up weaker position.It is believed that: for example assuming base portion When the diffusion of the up and down direction TD of bonding agent in 23 is insufficient, engagement is weaker, the 1st P12c due to elastic force of itself etc. and Naturally volume is restored, and reduces concave-convex relaxation.Therefore, using compression unit 27, make the base of the 1st P12c on the periphery of protrusion 21 Portion 23 is discontinuously engaged with the 2nd P13c, so as to more stably maintain the shape of protrusion 21.Thereby, it is possible to more stably Maintain the solid construction in protrusion 21.In addition, the base portion 23 of the 1st P12c is whole to be hardened in the continuous situation of compression unit 27, 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 Be it is intermittent, therefore, can be avoided such state of affairs.In addition, the 1st P12c and the 2nd in the region around protrusion 21 P13c is compressed, and therefore, the part of the lower part of protrusion 21 is stretched to 27 side of compression unit, i.e. the 2nd piece side P13c, thus protrusion 21 Entirety presses on the 2nd P13c.Moreover, the region opposite with the 1st protrusion 21 of P12c in the 2nd P13c is to the 1st The side P12c is close.The bottom (another face 20b of the 1st P12c) of protrusion 21 presses on a face of the 2nd P13c as a result, 30a can also flatten the gap even if there are gaps between the 1st P12c and the 2nd P13c.Thereby, it is possible to make protrusion It is increasingly constituted in 21 solid.
In the present embodiment, it from the viewpoint of the formation easness of compression unit 27 and from the viewpoint of melting piece, connects The temperature for closing the outer peripheral surface including pin 56p of roller 56 is higher than room temperature (illustrating: 25 DEG C) and than constituting the 1st P12c and the 2nd Low-melting 3rd predetermined temperature of the minimum material of fusing point in the material of P13c.It is preferred that than the temperature of (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 core/sheath construction fiber 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 as 100 DEG C.
Next, the composite sheet P10 of the material piece as surface patch 2 is manufactured to main body in main body manufacturing process S6 Device 57 supplies.In addition prepare the absorber of (manufacture) good absorber 4 and in addition prepare (manufacture) good back sheet 3 Backing material piece is supplied to main body manufacturing 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, to be continuously formed absorbent commodity P1.
As described above, absorbent commodity can be manufactured.
As described above, in the manufacturing method of this absorbent commodity, in formation process S2, in the 1st P12b A face 20a formed protrusion 21, another face (back side) 20b formed recess portion 22.Later, it in bonding process S5, utilizes 1st roller 52 maintains the shape of protrusion 21, and the shape of the recess portion 22 separated with the 2nd roller 53 is due to the composition fiber of the 1st P12c Screen resilience (or elastic force) and be alleviated, recess portion 22 become smaller (shallow and narrow) pit, the pit and the 2nd P13c benefit It is engaged with joint portion 14.In this way, by by the pit (recess portion 22 restores the pit formed), i.e. the 1st P12c another Region corresponding with protrusion 21 and the 2nd P13c engagement in the 20b of face, being able to suppress may be at the 1st P12c and the 2nd The gap generated between P13c can inhibit the hollow area to be formed in protrusion 21.It is solid thereby, it is possible to form protrusion 21 Shape.In addition, the region corresponding with protrusion 21 and the 2nd 13c in another face 20b of the 1st P12c are not only in shape It contacts on shape, and (is illustrated: bonding agent) using the engagement of joint portion 14, therefore, be able to suppress in subsequent process the 1st P12c and the 2nd P13c is locally separated and is formed hollow area subsequently.That is, being able to suppress in the protrusion of composite sheet P10 21 Interior formation hollow area, thus, it is possible to which protrusion 21 is made to become solid.It is soft by solid 21 bring of protrusion thereby, it is possible to take into account Soft, skin sense of touch and liquid permeability raising.
In addition, the rotation axis direction along roller be formed with teeth portion, groove portion and formed on piece along transverse direction CD In the case where having protrusion, even if forming protrusion in formation process, it is also difficult to using along conveying direction in subsequent process MD is applied to the tension of piece to maintain the shape of protrusion.Therefore, in the preferred configuration of present embodiment, in the 1st roller the 52, the 2nd Roller 53 and engagement roller 56 form teeth portion and groove portion along its direction of rotation, are formed as a result, along conveying direction MD in the 1st P12 Protrusion 21.Thus, in bonding process, subsequent process, the shape of the protrusion 21 can be made using the tension of conveying direction MD It is difficult to flatten, can easily maintain.That is, can be brought using the solid maintenance liquid permeability and maintenance of protrusion by the shape of protrusion 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, The adjustment of speed corresponding with the speed of the 1st roller 52 without the 2nd roller 53, it will be able to make the 1st P12b be difficult to generate fold, Reduced amplitude.Thereby, it is possible to more reliably inhibit more reliably make convex in bonding process S in the 1st P12b generation fold Portion forms solid.
In the further preferred form of present embodiment, preferably the top of the vertical direction of the 2nd roller 53 be located at than By the imaginary horizontal plane of the top of the vertical direction of the 1st roller 52 (in the example in figure 3, be include the 2nd P13a~ The plane of P13c, composite sheet P10) by the position of the downside of vertical direction.Its reason is as described below.As described above, there are the 1st The case where temperature of roller 52 is the 1 above-mentioned predetermined temperature higher than room temperature.Therefore, the air around the 1st roller 52 is by the 1st roller 52 heat heating, becomes low-density, mobile to vertical top.So, have can for the object above the vertical of the 1st roller 52 The temperature with 52 same degree of the 1st roller can be become.But, in vertical direction, by being configured at the 2nd roller 53 than the 1st roller 52 Position on the lower can prevent the temperature of the 2nd roller 53 from being influenced by the 1st roller 52 and becoming the temperature with 52 same degree of the 1st roller. As a result, in formation process S2, after another face of the 1st P12b is formed as concave shape, recess portion can be made easily extensive The multiple shape at general planar.As a result, it is possible to make not generate gap between the 1st and the 2nd, can more reliably make compound The protrusion of piece P10 becomes solid.
Grammes per square metre, thickness and the fibre density of piece in above embodiment are found out using following methods.
(1) grammes per square metre of piece: cutting out the size of 5cm × 5cm for piece as sample, dry under 100 DEG C or more of atmosphere Quality is measured after dry processing.The quality measured calculates the grammes per square metre of sample divided by the area of sample.By 10 samples The average value of grammes per square metre be set as the grammes per square metre of piece.
(2) thickness of piece: using having 15cm2The thickness gauge of gauge head (the smart device production of Dae Young Co., Ltd.'s chemistry is 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 as to the thickness of piece.
(3) fibre density of piece: the fibre density of piece is the grammes per square metre for the piece that will in the above way find out divided by by above-mentioned Method finds out the thickness of the piece come and calculates.
Absorbent commodity of the 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 symbols
1, absorbent commodity；52, the 1st roller；53, the 2nd roller；P10, composite sheet；P12, the 1st；P13, the 2nd.

Claims (11)

1. a kind of manufacturing method of absorbent commodity, the absorbent commodity have used composite sheet, which has: the 1st, Multiple protrusions are formed in a face；And the 2nd, it is laminated in described 1st another face, wherein
The manufacturing method of the absorbent commodity has following process:
Volume restores process, restores to be heat-treated described 1st in process and restore volume in the volume；
Formation process will carry out the 1st teeth portion and groove portion to the 1st roller of the heat treatment in the formation process It is supplied with the region that the teeth portion and groove portion of the 2nd roller are engaged with each other, and in described 1st the described one contacted with the 1st roller A face forms multiple protrusions, another face described in described 1st contact with the 2nd roller forms multiple recess portions；And
Bonding process, in the bonding process, with the shape for maintaining the 1st one face and the 1st roller to contact The respective inside of state and the multiple protrusion, which becomes solid mode, makes described 1st to separate and described more with the 2nd roller Another described face and described 2nd face bonding that the shape of a recess portion has mitigated, and the composite sheet is formed,
Joint portion between described 1st another described face and the 2nd one face weighs in a thickness direction It is laminated on described 1st region corresponding with the multiple protrusion difference.
2. the manufacturing method of absorbent commodity according to claim 1, wherein
Described 1st another described face is anti-wire side when manufacturing described 1st,
2nd one face is anti-wire side when manufacturing described 2nd,
In the bonding process, the described 1st anti-wire side and the 2nd anti-wire side are engaged.
3. the manufacturing method of absorbent commodity according to claim 1 or 2, wherein
The multiple protrusion is continuously extended along described 1st conveying direction (MD), in the multiple protrusion Between protrusion adjacent to each other, being continuously extended along the conveying direction (MD) has base portion,
The manufacturing method of the absorbent commodity is also equipped with intermittent engagement process, in the intermittent engagement process, in the base portion In, intermittent compression is carried out along the conveying direction (MD), thus by described 1st and the 2nd chip bonding.
4. the manufacturing method of absorbent commodity according to claim 1 or 2, wherein
The temperature of the outer peripheral surface including the teeth portion of 1st roller is higher than room temperature and than constituting in the 1st material The minimum material of fusing point low-melting 1st predetermined temperature.
5. the manufacturing method of absorbent commodity according to claim 4, wherein
The temperature of the outer peripheral surface including the teeth portion of 2nd roller is the 2nd of room temperature more than and less than the 1st predetermined temperature Predetermined temperature.
6. the manufacturing method of absorbent commodity according to claim 4, wherein
The top of the vertical direction of 2nd roller is located at more imaginary than the top of the vertical direction by the 1st roller Position of the horizontal plane by the downside of vertical direction.
7. the manufacturing method of absorbent commodity according to claim 1 or 2, wherein
The material of the outer peripheral surface including the teeth portion of 2nd roller is by dielectric formation.
8. the manufacturing method of absorbent commodity according to claim 1 or 2, wherein
1st roller and the 2nd roller be continuously extended on outer peripheral surface along direction of rotation respectively have the teeth portion and The groove portion,
In the formation process, by described 1st to the speed that the mesh regional supplies be the outer circular velocity of the 1st roller with Under.
9. the manufacturing method of absorbent commodity according to claim 1 or 2, wherein
In the formation process, the periphery speed of the 2nd roller is faster than the outer circular velocity of the 1st roller.
10. the manufacturing method of absorbent commodity according to claim 1 or 2, wherein
In the formation process, described 1st is pressed on the institute of the 2nd roller at the top of the teeth portion of the 1st roller It states the bottom of groove portion and is 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. the manufacturing method of absorbent commodity according to claim 1 or 2, wherein
2nd roller with the 1st state rotated together to rotate.
CN201680003357.2A 2016-07-29 2016-07-29 The manufacturing method of absorbent commodity Active CN107889456B (en)

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JP7327142B2 (en) * 2019-12-18 2023-08-16 王子ホールディングス株式会社 Absorbent article, apparatus for manufacturing absorbent article, and method for manufacturing absorbent article

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CN102026606A (en) * 2008-05-15 2011-04-20 尤妮佳股份有限公司 Front face sheet for absorbent article, method of producing the same and absorbent article using the same
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