WO2018083774A1 - Procédé de fabrication d'un absorbant pour article absorbant, et dispositif associé - Google Patents

Procédé de fabrication d'un absorbant pour article absorbant, et dispositif associé Download PDF

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Publication number
WO2018083774A1
WO2018083774A1 PCT/JP2016/082757 JP2016082757W WO2018083774A1 WO 2018083774 A1 WO2018083774 A1 WO 2018083774A1 JP 2016082757 W JP2016082757 W JP 2016082757W WO 2018083774 A1 WO2018083774 A1 WO 2018083774A1
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WIPO (PCT)
Prior art keywords
base material
skin side
absorbent
absorbent body
sheet
Prior art date
Application number
PCT/JP2016/082757
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English (en)
Japanese (ja)
Inventor
直人 井上
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to PCT/JP2016/082757 priority Critical patent/WO2018083774A1/fr
Priority to CN201680090047.9A priority patent/CN109843236A/zh
Priority to JP2017510692A priority patent/JP6171118B1/ja
Publication of WO2018083774A1 publication Critical patent/WO2018083774A1/fr

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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

Definitions

  • the present invention relates to a method for manufacturing an absorbent body and a manufacturing apparatus according to an absorbent article such as a sanitary napkin.
  • Sanitary napkins are known as absorbent articles that absorb excreted fluid such as menstrual blood.
  • the napkin has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other.
  • the napkin has a liquid-absorbing absorber between a liquid-permeable top sheet and a liquid-impermeable back sheet.
  • the napkin 1 ′ is provided with a folding guide line LB ′ along the longitudinal direction at the center in the width direction. It is configured to be able to bend so that the center part protrudes to the skin side in the thickness direction.
  • the wearer wears the underwear after fixing it to an undergarment (not shown) so that the longitudinal direction thereof faces the front-rear direction of the wearer 201 (direction passing through the paper surface of FIG. 1A).
  • the center part in the width direction of the napkin 1 ′ is skinned in the thickness direction by the action of the crotch tightening force or the like facing the inner side in the width direction applied from the crotch of the wearer 201
  • the concave portion 10m ′ can be formed by using a pair of upper and lower rolls 51 u ′ and 51 d ′ rotating with the outer peripheral surfaces 51 us ′ and 51 ds ′ facing each other.
  • one roll 51u ′ is a roll having a smooth outer peripheral surface 51us ′, and the outer peripheral surface 51ds ′ of the other roll 51d ′ is provided with a convex portion 51r ′ on the entire circumference in the rotation direction of the roll 51d ′.
  • the concave portion 10m ′ along the longitudinal direction at the center in the width direction of the non-skin side surface 10sn ′ of the absorbent body 10 ′. Can be formed.
  • the outer peripheral surface 51us ′ of one roll 51u ′ is a smooth surface
  • the bottom 10mb ′ of the recess 10m ′ is compressed with a high degree of compression, and thereby the bottom 10mb. 'Is thin. Therefore, as shown in the lower diagram of FIG. 1B, the absorber 10 ′ can be quickly bent at the bottom portion 10mb ′.
  • the bottom portion 10mb ′ of the recess 10m ′ is compressed with a relatively high degree of compression, so that the bottom portion 10mb ′ is also cured.
  • the bottom portion 10mb ′ The skin side surface 10 mbs' is a part that abuts on the excretion opening 201He such as the vaginal opening and the vicinity thereof. Therefore, when this bottom part 10mb 'is hardened
  • the present invention has been made in view of the above-described conventional problems.
  • the object of the present invention is to form a concave portion in the central portion in the width direction on the non-skin side surface of the absorbent body so that the central portion is the skin. While the absorber is bent so as to protrude to the side, the bottom of the recess is prevented from being cured.
  • the main invention for achieving the above object is: A liquid-absorbent absorbent body provided for an absorbent article having a longitudinal direction, a width direction, and a thickness direction, wherein the absorbent body has a recess at a central portion in the width direction on a non-skin side surface in the thickness direction.
  • a method of manufacturing an absorber A transporting step of transporting the absorbent base material in the transport direction; A concave portion that forms the concave portion in the base material of the absorbent body by pushing a pushing member from the non-skin side in the thickness direction into a position corresponding to the central portion on the non-skin side surface of the base material of the absorbent body.
  • a forming step In the recess forming step, based on the pressing of the pressing member, at the positions on both sides in the width direction of the bottom of the recess, a high compression portion having a higher degree of compression than the compression of the bottom is formed, and the bottom
  • a liquid-absorbent absorbent body provided for an absorbent article having a longitudinal direction, a width direction, and a thickness direction, wherein the absorbent body has a recess at a central portion in the width direction on a non-skin side surface in the thickness direction.
  • An apparatus for manufacturing an absorber A transport device for transporting the absorbent base material in the transport direction; A concave portion that forms the concave portion in the base material of the absorbent body by pushing a pushing member from the non-skin side in the thickness direction into a position corresponding to the central portion on the non-skin side surface of the base material of the absorbent body.
  • the recess forming device forms a high compression portion having a degree of compression higher than a compression degree of the bottom portion at positions on both sides in the width direction of the bottom portion of the recess based on the pressing of the pressing member.
  • the bottom of the concave portion is formed by forming the concave portion in the center portion in the width direction on the non-skin side surface of the absorbent body so that the absorber is bent so that the central portion protrudes to the skin side. Curing of the resin can be suppressed.
  • the central portion in the width direction of the napkin 1 ′ is thick on the basis of the folding guide line LB provided along the longitudinal direction in the central portion in the width direction.
  • FIG. 4 is a schematic exploded view taken along arrows IV-IV in FIG. 2. It is the schematic plan view which looked at the absorber 10 from the non-skin side of the thickness direction.
  • 6A and 6B are schematic views showing a state in which the absorbent body 10 is bent as seen from arrows VI-VI in FIG. FIG.
  • FIG. 7A is an explanatory diagram of the recess 10m, and is an enlarged view of the VII portion in FIG. 6A.
  • FIG. 7B is a schematic diagram showing a state in which the absorber 10 having the recess 10m is bent. It is a schematic side view of the manufacturing apparatus 30 for the absorbent body 10 of the present embodiment, which is a part of the production line for the napkin 1.
  • FIG. 9A is a schematic side view of the recess forming device 50
  • FIG. 9B is a schematic front view taken along the line BB in FIG. 9A.
  • FIG. 9B is a schematic enlarged view taken along the line XX in FIG. 9A.
  • FIG. 11A is an explanatory diagram of a trouble that may occur after forming the recess 10m in the absorbent base material 10K
  • FIG. 11B is an explanatory diagram of the shape of the absorbent base material 10K that can prevent the trouble in advance. It is. It is explanatory drawing of the method which can change the base material 10K of an absorber into the shape of FIG. 11B in order to prevent the said trouble, Comprising: It is the schematic top view which looked at the base material 10K of the absorber from upper direction, FIG. It is a BB arrow line view in 12A. It is explanatory drawing of the manufacturing apparatus 30a of the absorber 10 of the modification of this embodiment.
  • a liquid-absorbent absorbent body provided for an absorbent article having a longitudinal direction, a width direction, and a thickness direction, wherein the absorbent body has a recess at a central portion in the width direction on a non-skin side surface in the thickness direction.
  • a method of manufacturing an absorber A transporting step of transporting the absorbent base material in the transport direction; A concave portion that forms the concave portion in the base material of the absorbent body by pushing a pushing member from the non-skin side in the thickness direction into a position corresponding to the central portion on the non-skin side surface of the base material of the absorbent body.
  • a forming step In the recess forming step, based on the pressing of the pressing member, at the positions on both sides in the width direction of the bottom of the recess, a high compression portion having a higher degree of compression than the compression of the bottom is formed, and the bottom
  • the absorbent body can be quickly bent so that the central portion in the width direction protrudes to the skin side, while suppressing the curing of the bottom of the concave portion.
  • Details are as follows. First, high compression portions having a higher degree of compression than the bottom portion of the recess are formed at positions on both sides in the width direction of the recess. Therefore, the absorbent body can be quickly bent at each high compression portion, whereby the absorbent body can be quickly bent so that the central portion in the width direction protrudes toward the skin as a whole.
  • the skin side surface in the bottom part of a recessed part is protruded on the skin side rather than the skin side surface of the part in which the recessed part is not formed in the base material of an absorber. For this reason, the degree of compression of the bottom can be reduced, thereby suppressing the hardening of the bottom that may occur when the degree of compression is high.
  • a method for producing an absorbent body according to such an absorbent article In the recess forming step, the holding surface of the holding member is in contact with the skin side surface of the base material of the absorbent body so that the holding member supports the base material of the absorbent body, and the holding surface is In a position facing the pushing member, a depression portion into which the pushing member can be inserted is provided, It is desirable that the concave portion is formed in the base material of the absorbent body by pushing the pushing member toward the hollow portion.
  • each side surface in the width direction of the concave portion is caused by each side surface in the width direction of the hollow portion and the pushing member.
  • the part containing is compressed. Therefore, the high compression portion can be quickly formed at positions on both sides in the width direction of the bottom of the recess.
  • the bottom part of the said recessed part can move to the skin side rapidly based on the said hollow part provided in the holding surface of a holding member.
  • the skin side surface of the bottom part can be rapidly protruded to the skin side rather than the skin side surface of the part in which the recessed part is not formed in the base material of an absorber. Therefore, the degree of compression of the bottom portion can be reduced, and the hardening can be suppressed.
  • a method for producing an absorbent body according to such an absorbent article In the recess forming step, it is desirable to push the pushing member into the skin side until at least a part of the pushing member is inserted into the depression.
  • the pushing member is pushed into the skin side until at least a part of the pushing member is inserted into the recess. Therefore, it is possible to further increase the degree of compression when the portion including each side surface in the width direction of the concave portion is compressed by each side surface in the width direction of the recessed portion and the pushing member. As a result, it is possible to increase the degree of compression of the high compression portion formed at both sides in the width direction of the bottom portion of the concave portion, and thereby the absorber can be reliably bent at the high compression portion. .
  • a method for producing an absorbent body according to such an absorbent article It is desirable that at least one of the pushing member and the holding member is heated by a heating member.
  • At least one of the pushing member and the holding member is heated. Therefore, even after the pushing member is separated from the base material of the absorbent body, the shape of the concave portion is easily maintained without being greatly collapsed from the shape of the pushing member.
  • a method for producing an absorbent body according to such an absorbent article In the recessed portion forming step, it is desirable that a recessed portion is formed on the skin side surface of the base material of the absorbent body by the corner portions on both sides in the width direction of the recessed portion.
  • a portion where the above-described dent portion is formed in the base material of the absorbent body is more easily bent than other portions. Therefore, the part in which the said dent part is formed can contribute to effectively that an absorber bends so that the center part of the width direction may protrude to the skin side.
  • the absorbent body has an absorbent core, and a skin side sheet disposed on the skin side of the absorbent core, Having a skin side sheet placement step of placing the base sheet of the skin side sheet on the skin side of the base material of the absorbent core; In the recess forming step, it is preferable that the skin-side sheet is pushed into the base material of the absorbent core disposed on the skin side.
  • the concave portion is formed in a state where the base material sheet of the skin side sheet is disposed on the base material of the absorbent core, the base material sheet Also, a recess is substantially formed. Therefore, compared with the case where the base sheet of the skin-side sheet is arranged on the base material of the absorbent core after the concave portion is formed on the base material of the absorbent core, the concave portion is also formed on the base sheet. Therefore, it becomes possible to manufacture an absorbent body that is easy to bend.
  • the absorbent article has a top sheet that is arranged on the skin side of the absorbent body and forms the skin side surface of the absorbent article, A position for performing the bonding portion forming step is located downstream of the position for performing the concave portion forming step, in the transport direction, In the bonding portion forming step, the top sheet base material sheet is disposed on the skin side with respect to the base material of the absorbent body in which the concave portion is formed, and second pressing is performed from the skin side of the base material sheet. It is desirable to compress and form a joint portion for joining the base material of the absorbent body and the base material sheet to the portion where the second push-in member is pushed by pushing the member.
  • the concave portion is not formed in the base sheet of the top sheet. Therefore, since there is no portion that is hardened due to the formation of the concave portion in the base material sheet, the touch of the top sheet can be maintained in a good state. Therefore, it is possible to manufacture an absorbent article having a skin side surface that has a good touch.
  • the absorbent article has a top sheet that is arranged on the skin side of the absorbent body and forms the skin side surface of the absorbent article, A position for performing the bonding portion forming step is located on the upstream side in the transport direction from the position for performing the concave portion forming step, In the joining portion forming step, the top sheet base material sheet is arranged on the skin side with respect to the base material of the absorbent body in which the concave portion is not formed, and second pressing is performed from the skin side of the base material sheet.
  • the portion where the second pressing member is pressed is compressed to form a bonding portion that bonds the base material of the absorbent body and the base material sheet,
  • the base sheet is also substantially Thus, a recess is formed. Therefore, compared to the case where the top sheet base material sheet is disposed on the absorbent base material after the concave portion is formed on the base material of the absorbent body, the concave portion is also formed on the base material sheet. It becomes possible to manufacture an absorbent body that is easy to bend.
  • a method for producing an absorbent body according to such an absorbent article The base material of the absorber is transported with the longitudinal direction as the transport direction, It is desirable to have a conveyance process of conveying the base material of the absorbent body while regulating the base material of the absorbent body so that the base material of the absorbent body in which the concave portion is formed is parallel to the width direction.
  • the following trouble that may occur during the transport of the base material of the absorbent body can be prevented in advance. That is, after the formation of the concave portion, the base material of the absorbent body is easily bent in a substantially V shape so that the central portion in the width direction protrudes to the skin side in accordance with the formation of the concave portion.
  • the base material of the absorbent body is transported in a state, troubles such as the base material of the absorbent body being caught by another device arranged in the transport direction may occur.
  • the base material of the absorbent body is adjusted while regulating the base material of the absorbent body so that the base material of the absorbent body in which the recess is formed is parallel to the width direction. Transport. Therefore, the occurrence of such trouble can be prevented, and as a result, the manufacture of the absorber can be stabilized.
  • a method for producing an absorbent body according to such an absorbent article The base material of the absorber is transported with the longitudinal direction as the transport direction, The rib portion as the pushing member is provided to continuously protrude over the entire circumference in the rotation direction of the first rotating body on the outer peripheral surface of the first rotating body rotating along the transport direction,
  • the holding member is a second rotating body that rotates along the transport direction while facing an outer peripheral surface as the holding surface to the outer peripheral surface of the first rotating body, It is desirable that a groove portion as the recess portion is provided continuously on the outer peripheral surface over the entire circumference in the rotation direction of the second rotating body.
  • the above-mentioned concave portion can be formed in a groove shape continuous over the entire length in the longitudinal direction of the absorbent body. Therefore, it becomes possible to manufacture the absorbent body so that the central portion in the width direction of the absorbent body is bent so as to protrude to the skin side.
  • a liquid-absorbent absorbent body provided for an absorbent article having a longitudinal direction, a width direction, and a thickness direction, wherein the absorbent body has a recess at a central portion in the width direction on a non-skin side surface in the thickness direction.
  • An apparatus for manufacturing an absorber A transport device for transporting the absorbent base material in the transport direction; A concave portion that forms the concave portion in the base material of the absorbent body by pushing a pushing member from the non-skin side in the thickness direction into a position corresponding to the central portion on the non-skin side surface of the base material of the absorbent body.
  • the recess forming device forms a high compression portion having a degree of compression higher than a compression degree of the bottom portion at positions on both sides in the width direction of the bottom portion of the recess based on the pressing of the pressing member.
  • FIG. 2 is a schematic plan view of the napkin 1 viewed from the skin side in the thickness direction
  • FIG. 3 is a schematic plan view of the napkin 1 viewed from the non-skin side in the thickness direction.
  • FIG. 4 is a schematic exploded view taken along arrows IV-IV in FIG.
  • FIG. 5 is a schematic plan view of the absorber 10 as seen from the non-skin side in the thickness direction.
  • 6A and 6B are schematic views showing the state in which the absorbent body 10 is bent as seen along arrows VI-VI in FIG.
  • the napkin 1 is a sheet-like member that is vertically long in plan view and has a longitudinal direction, a width direction, and a thickness direction. Further, in the napkin 1, the liquid-permeable top sheet 22, the liquid-absorbent absorber 10, and the liquid-impermeable back sheet 23 are sequentially formed from the skin side in the thickness direction to the non-skin side. And are stacked. Each of the members 22, 10, and 23 is joined to an adjacent member in the thickness direction with an adhesive such as a hot melt adhesive. Examples of the application pattern of the adhesive include an ⁇ pattern, a spiral pattern, and a stripe pattern, and the same applies to other adhesives that appear later.
  • the direction corresponding to the abdomen side of the wearer 201 in the longitudinal direction is also referred to as “front side”
  • the direction corresponding to the same back side is also referred to as “rear side”.
  • the planar size of the top sheet 22 and the back sheet 23 is larger than the planar size of the absorbent body 10. Therefore, the outer peripheral edge portions 22e and 23e (see the dot pattern portion in FIG. 2) of both the sheets 22 and 23 protrude from the absorber 10 outward in the longitudinal direction and outward in the width direction, respectively. And the absorber 10 is hold
  • both sheets 22 and 23 are the same. And both the sheets 22 and 23 are carrying out the shape where the substantially center part of the longitudinal direction protruded to the both sides of the width direction, and these protruding parts 22w and 23w mount the napkin 1 on underwear (not shown). It functions as so-called wing portions 1w and 1w provided when the device is fixed. That is, as shown in FIGS. 3 and 4, on the non-skin side surface of the portion 23 w corresponding to each wing portion 1 w in the back sheet 23, an adhesive portion 24 w for fixing the napkin 1 to the underwear is an appropriate adhesive. It is formed in a substantially rectangular shape.
  • a plurality of adhesive portions 24c having the same purpose are also formed in strips along the longitudinal direction with an appropriate adhesive in the portion 23c between the wing portions 1w, 1w on the non-skin side surface of the back sheet 23.
  • the arrangement pattern of the adhesive portions 24w and 24c is not limited to this.
  • an appropriate non-woven fabric such as an air-through non-woven fabric can be mentioned.
  • an air-through non-woven fabric is used.
  • any other sheet may be used as long as it is a liquid-permeable flexible sheet.
  • suitable resin films such as polyethylene (PE)
  • PE polyethylene
  • PE film is used.
  • other sheets may be used as long as they are flexible liquid-impermeable sheets.
  • a plurality of compression portions E, E... are formed on the skin side surface of the top sheet 22 from the skin side, whereby the top sheet 22 and the absorbent body 10 are thick together. It is compressed in the vertical direction and firmly joined and integrated.
  • two types of compression portions EL and ED are formed as the compression portion E.
  • One compression section E is a linear compression section EL (hereinafter also referred to as a linear compression section EL).
  • the said linear compression part EL, EL ... is formed in multiple numbers along the outer periphery part of the absorber 10, and, thereby, has comprised the substantially cyclic
  • the other compression part E is a point-like compression part ED (hereinafter also referred to as a point-like compression part ED). .. are formed discretely in a substantially closed area AEL defined by the plurality of linear compression parts EL, EL... On the top sheet 22.
  • the planar shape of each point-like compression part ED is a circle having a diameter of 1 mm, and the arrangement pattern of the same point-like compression parts ED, ED... Is a staggered arrangement pattern. Not limited to.
  • one or both of the point-like compression part ED and the linear compression part EL may be omitted.
  • the absorbent body 10 is composed of an absorbent core 11 formed by molding a liquid absorbent material into a predetermined shape, and a skin having substantially the same planar shape as the core 11 so as to cover the skin side surface of the core 11.
  • the side sheet 12 and the core 11 and the non-skin side sheet 13 having substantially the same planar shape are provided to cover the core 11 from the non-skin side surface.
  • seat 12,13 is each joined and integrated with the absorptive core 11 with adhesive agents, such as a hot-melt-adhesive agent, Thereby, each sheet
  • the absorbent core 11 has, for example, both a liquid absorbent fiber as an example of a liquid absorbent material and a liquid absorbent granular material in a predetermined shape with a predetermined blending ratio and a predetermined basis weight (g / m 2 ). It has been laminated and molded.
  • a predetermined shape the substantially rectangular shape of planar view vertically long long in the longitudinal direction of the napkin 1 like FIG. 5 can be illustrated.
  • the shape is not limited to this, and other shapes such as a substantially hourglass shape may be used.
  • liquid absorptive fiber and liquid absorptive granular material which make a liquid absorptive material a pulp fiber and a super absorbent polymer (SAP) can be illustrated, respectively, and these are used here.
  • SAP super absorbent polymer
  • a pulp airlaid nonwoven fabric nonwoven fabric mainly composed of pulp fibers
  • the liquid absorbent material may be used as the liquid absorbent material.
  • tissue paper is used as the skin-side sheet 12, but the sheet is not limited to this as long as it is a liquid-permeable and flexible sheet. That is, a non-woven fabric such as an air-through non-woven fabric may be used. In other words, the skin side sheet 12 can be omitted.
  • tissue paper is also used for the non-skin side sheet 13, but is not limited to this as long as it is a flexible sheet. That is, a non-woven fabric such as an SMS (spunbond / meltblown / spunbond) non-woven fabric may be used, and more specifically, the non-skin side sheet 13 can be omitted.
  • a point-like compression part ED10 (hereinafter also referred to as a point-like compression part ED10) is compression-formed from the non-skin side. That is, in this example, since the absorbent body 10 has the skin side sheet 12, the absorbent core 11, and the non-skin side sheet 13, when these three members are compressed together in the thickness direction, The compression part ED10 is formed. As a result, the rigidity is enhanced, and as a result, unnecessary deformation such as twisting can be suppressed.
  • the planar shape of the compression part ED10 is a circle having a diameter of 1.2 mm, and the arrangement pattern of the compression parts ED10, ED10... Is a staggered pattern, but is not limited thereto.
  • the recessed part 10m as the folding guide line LB is a straight groove-shaped along a longitudinal direction in the center part of the width direction in the non-skin side surface 10sn of the absorber 10. As shown in FIG. It is formed over the entire length in the same longitudinal direction. As a result, as shown in FIG. 6B, the absorbent body 10 is guided such that the central portion in the width direction protrudes toward the skin side in the thickness direction and bends.
  • FIG. 7A is an explanatory view of the concave portion 10m, and is an enlarged view of the VII portion in FIG. 6A.
  • the recess 10m is formed to be dented on the non-skin side as described above. Further, the skin side surface 10 mbss of the bottom 10 mb of the recess 10 m protrudes to the skin side from the skin side 10 nms of the part 10 nm where the recess 10 m is not formed in the absorbent body 10 (hereinafter, also referred to as a recess-unformed part 10 nm).
  • the high compression portions 10p, 10p (hatching pattern) compressed with a compression degree higher than the compression degree applied to the bottom portion 10mb when the concave portion 10m is formed. Part is formed). Then, based on the difference in the degree of compression, the high compression portions 10p and 10p are thinner than the bottom portion 10mb, so that the absorbent body 10 can be quickly formed by the pair of high compression portions 10p and 10p. It can be bent and deformed.
  • the absorbent body 10 is quickly recessed by the pair of high compression portions 10p and 10p from the state of FIG. 7A to the state of FIG. 7B. It is folded in the direction in which the space SP of 10 m becomes smaller, that is, folded so that the non-skin side becomes the valley side. As a result, as shown in FIG. Bend so that it protrudes toward the skin side. As a result, as shown in FIG. 1A, the napkin 1 can exhibit good fit to the excretory opening 201He such as the vaginal opening and the vicinity thereof at the central portion in the width direction and the vicinity thereof. Further, as described above with reference to FIG.
  • the skin side surface 10 mbss of the bottom portion 10 mb of the recess 10 m protrudes to the skin side from the skin side surface 10 nmss of the concave portion non-formed portion 10 nm in the absorbent body 10.
  • the degree of compression is reduced. That is, the formation of the concave portion 10m in the absorbent body 10 is performed in the thickness direction from the non-skin side surface 10Ksn of the base material 10K of the absorbent body, as described later with reference to FIG.
  • the skin side surface 10Kss of the base material 10K of the absorbent body is supported by a holding surface 51ds having a groove 51m as a depression when the pressing is performed. ing.
  • the groove 51m is formed at a position facing the rib 51r. Therefore, when the rib portion 51r is pushed in, the bottom portion 10mb of the concave portion 10m can be moved so as to quickly escape toward the skin side, thereby reducing the degree of compression of the bottom portion 10mb. As a result, curing of the bottom 10 mb that may occur when the degree of compression is high is suppressed, and as a result, the wearer 201 can feel a good touch when the napkin 1 is worn.
  • FIG. 8 is a schematic side view showing a part of the production line of the napkin 1.
  • an absorbent base material 10K is first generated as an intermediate product 1m of the napkin 1.
  • the intermediate product 1m is transported along a predetermined transport direction by an appropriate transport device 90, 90..., And during such transport, joining processing and pressing with another sheet at each position in the transport direction.
  • Appropriate processing such as processing and cutting processing is performed on the intermediate product 1m.
  • the napkin 1 in the state of FIG. 2 is finally manufactured.
  • the intermediate product 1m is transported in a so-called “longitudinal flow” transport mode, that is, transported in a posture in which the longitudinal direction of the napkin 1 faces the transport direction. Therefore, when the direction perpendicular to the transport direction (direction passing through the paper surface of FIG. 8) is defined as “CD direction”, the width direction of the napkin 1 is basically directed to the CD direction, and the napkin 1 The thickness direction is directed in a direction orthogonal to the transport direction and the CD direction.
  • the CD direction is in the horizontal direction, but the present invention is not limited to this. For example, it may be slightly inclined from the horizontal direction.
  • the manufacturing method and the manufacturing apparatus 30 of the absorber 10 according to the present embodiment are responsible for one step of the manufacturing line. That is, the manufacturing method and the manufacturing apparatus 30 basically manufacture the absorbent body 10 having the above-described recess 10m. The manufacturing method is performed using the manufacturing apparatus 30. Therefore, the manufacturing apparatus 30 will be described below.
  • the manufacturing apparatus 30 includes, as the first intermediate product 1m, a base material generating device 32 that generates the base material 10K of the absorbent body in a continuous form in the transport direction, and the base material 10K of the absorbent body.
  • the transport roller may be a drive roller that is driven and rotated by a drive source such as a motor, or a driven roller that is driven and rotated without a drive source.
  • the conveyor may be a belt conveyor that conveys the absorbent base material 10K with the upper surface of an endless belt that circulates as a conveying surface, and is absorbed by a plurality of intake holes provided on the conveying surface. It may be a suction belt conveyor that conveys the body substrate 10K while adsorbing it.
  • Substrate generating device 32 In the base material production
  • absorbent base material 10K basically, the absorbent body is not in the form of a single-sheet absorbent base material 10K but is continuous in the conveying direction.
  • the base material 10K is pointed out.
  • the fiber stacking device 34 includes a rotary drum 35 that is driven to rotate about the rotation axis C ⁇ b> 35 facing the CD direction along the conveyance direction, and pulp fibers and the like toward the outer peripheral surface 35 s of the rotary drum 35.
  • a supply duct 36 for supplying and supplying the liquid absorbent material.
  • the supply duct 36 is disposed at a predetermined position in the rotation direction of the rotary drum 35.
  • an endless groove 35m is formed on the outer peripheral surface 35s of the rotating drum 35 over the entire circumference in the rotation direction with a constant groove width along the rotation direction.
  • a plurality of air intake holes (not shown) for adsorbing the liquid absorbent material are provided on the bottom surface 35mb of the groove 35m over the entire circumference in the rotation direction.
  • the liquid absorbent material is sequentially laminated on the portion of the groove portion 35m that passes through the position of the supply duct 36, whereby the absorbent core continuous in the conveying direction is formed in the groove portion 35m.
  • the continuum 11a is generated.
  • the continuous body 11a is released from the groove 35m with the position corresponding to the lower end of the rotating drum 35 in the rotation direction as the release position Pout.
  • a belt conveyor 90CV is disposed below the release position Pout.
  • seat 12 is conveyed with the form of the continuous sheet which follows the conveyance direction in the rotation direction of the rotating drum 35 by the belt conveyor 90CV.
  • the adhesive has already been applied to the non-skin side surface that is the upper surface of the base sheet 12K. Therefore, the absorbent core continuum 11a released from the rotary drum 35 is placed on the upper surface of the base sheet 12K of the skin side sheet, and at the same time is joined and integrated with the base sheet 12K with an adhesive. (Corresponding to the skin side sheet arranging step). Thereafter, the absorbent core continuous body 11a and the skin-side base material sheet 12K are integrally fed downstream in the transport direction.
  • a transport roller 90R is disposed above the predetermined position P13K on the downstream side in the transport direction from the release position Pout. Then, the base sheet 13K of the non-skin side sheet 13 is transported in the form of a continuous sheet formed continuously in the transport direction by the transport roller 90R, and the base sheet 13K is in the predetermined position P13K. Then, it joins the conveyance path of the continuous body 11a of the absorbent core. In addition, at the predetermined position P13K, the adhesive has already been applied to the skin side as the lower surface of the base sheet 13K.
  • the continuous body 11a of the absorbent core is covered and integrated with the base material sheet 13K of the non-skin side sheet from above, and at the same time is joined and integrated with the base material sheet 13K with an adhesive. Thereafter, the continuous body 11a of the absorbent core is conveyed downstream in the conveying direction together with the base sheet 12K of the non-skin side sheet as well as the base sheet 12K of the skin side sheet.
  • a continuous body 10a of an absorbent body in which a plurality of absorbent bodies 10 in which a concave portion 10m, a point-like compression part ED10, a point-like compression part ED, and a line-like compression part EL are not formed are continuously formed in the transport direction, It is produced as the base material 10K of the absorber. And the base material 10K of this absorber is conveyed to the dotted
  • the point compression unit forming device 40 includes a pair of upper and lower rolls 41u and 41d that are driven and rotated along the transport direction around a rotation axis C41 along the CD direction.
  • the outer peripheral surface of the upper roll 41u is opposed to the non-skin side surface of the base material 10K of the absorber, but the outer peripheral surface of the upper roll 41u has a zigzag shape corresponding to the above-described point-like compression unit ED10.
  • a plurality of convex portions (not shown) are provided in the arrangement pattern.
  • the outer peripheral surface of 41 d of lower rolls has opposed the skin side surface
  • the outer peripheral surface of the said lower roll 41 d is made into the smooth surface without a convex part and a recessed part. Therefore, when the base material 10K of the absorbent body passes between the upper and lower rolls 41u and 41d along the transport direction, the convex portion is pushed into the non-skin side surface of the base material 10K.
  • the aforementioned point-like compression part ED10 is formed on the non-skin side surface of the base material 10K.
  • punctate compression part ED10 was formed is conveyed to the recessed part formation apparatus 50 located in the downstream of a conveyance direction rather than the dotted
  • FIG. 9A is a schematic side view of the recess forming device 50
  • FIG. 9B is a schematic front view taken along the line BB in FIG. 9A.
  • the base material 10K of the absorber is not shown for the purpose of preventing the complication of the drawing.
  • FIG. 10 is a schematic enlarged view taken along the line XX in FIG. 9A.
  • FIG. 10 is a diagram for explaining the relative positional relationship between the rib portion 51r and the groove portion 51m at a position where the upper and lower rolls 51u and 51d are closest to each other in the rotation direction.
  • the recess forming apparatus 50 also has a pair of upper and lower rolls 51u and 51d that are driven and rotated along the transport direction around the rotation axis C51 along the CD direction. Then, on the outer peripheral surface 51us of the upper roll 51u (corresponding to the first rotating body) facing the non-skin side surface 10Ksn of the base material 10K of the absorbent body, a position corresponding to the center portion in the CD direction of the base material 10K of the absorbent body.
  • a single rib portion 51r (corresponding to a push-in member) having a shape corresponding to the above-described concave portion 10m is provided in an annular shape so as to continuously protrude over the entire circumference in the rotational direction.
  • the lower roll 51d functions as a holding member that supports the base material 10K from below when the rib portion 51r of the upper roll 51u is pushed into the base material 10K of the absorber, that is, the lower roll 51d as a holding surface.
  • the outer peripheral surface 51ds is in contact with the skin side surface 10Kss of the base material 10K.
  • the outer peripheral surface 51ds can be inserted into the rib portion 51r at a position facing the rib portion 51r.
  • One groove portion 51m (corresponding to a hollow portion) is continuously formed in an annular shape over the entire circumference in the rotational direction.
  • the base material 10K of the absorbent body passes between the upper and lower rolls 51u and 51d along the transport direction, the rib portion is formed on the non-skin side surface 10Ksn of the base material 10K as shown in FIG. 51r is pushed in smoothly, and thereby the aforementioned recess 10m is formed on the non-skin side surface 10Ksn of the substrate 10K (corresponding to a recess forming step).
  • the base material 10K of the absorber in which the said recessed part 10m was formed is conveyed to the cutter apparatus 60 located in the downstream of a conveyance direction rather than the recessed part formation apparatus 50, as shown in FIG.
  • the cross-sectional shape of the rib portion 51r of the upper roll 51u (the shape of the rib portion 51r in the cross-section orthogonal to the rotation direction) has a substantially isosceles trapezoidal shape. That is, the rib portion 51r includes a top surface 51rt parallel to the CD direction, a pair of side surfaces 51rs and 51rs that are inclined at a predetermined angle from the rotational radius direction of the upper roll 51u on both sides of the top surface 51rt in the CD direction, And the dimension in the CD direction of the top surface 51rt is also smaller in the CD direction of the rib part 51r at the position of the outer peripheral surface 51us of the upper roll 51u, which is the root position of the rib part 51r.
  • the cross-sectional shape of the rib portion 51r has a tapered shape in which the rib width becomes narrower toward the outer side in the rotational radius direction of the upper roll 51u.
  • the cross-sectional shape of the groove 51m of the lower roll 51d (the shape of the groove 51m in a cross section orthogonal to the rotation direction) is also substantially isosceles trapezoid. That is, the groove 51m has a bottom surface 51mb parallel to the CD direction, and a pair of side surfaces 51ms and 51ms inclined at a predetermined angle from the rotational radius direction of the lower roll 51d on both sides of the bottom surface 51mb in the CD direction. ing.
  • the dimension in the CD direction of the bottom surface 51mb is smaller than the dimension in the CD direction of the groove 51m at the position of the outer peripheral surface 51ds of the lower roll 51d, whereby the cross-sectional shape of the groove 51m is lower than the lower roll 51d.
  • the taper shape has a narrower groove width toward the inner side in the rotational radius direction. As shown in FIG. 10, when the rib portion 51r having such a cross-sectional shape is pushed most into the groove portion 51m, at least the top surface 51rt (corresponding to a part of the pushing member) of the rib portion 51r is the groove portion. It is designed to be inserted at 51m.
  • the clearance CL2 between the side surface 51rs of the rib portion 51r and the side surface 51ms of the groove portion 51m is larger than the clearance CL1 between the top surface 51rt of the rib portion 51r and the bottom surface 51mb of the groove portion 51m. Is smaller.
  • the degree of compression is higher than the degree of compression of the bottom part 10mb of the concave part 10m pushed by the top surface 51rt of the rib part 51r.
  • the portion 10p located between the side surface 51rs of the rib portion 51r and the side surface 51ms of the groove portion 51m is compressed.
  • the high compression portions 10p and 10p having a compression degree higher than the compression degree of the bottom portion 10mb are formed at positions on both sides in the CD direction of the concave portion 10m.
  • the high compression portions 10p and 10p are compressed.
  • the absorbent body 10 can be quickly bent at the high compression portions 10p and 10p as shown in FIG. 7B. And thereby, when the wearer 201 wears the napkin 1 as shown in FIG. 1A, the absorbent body 10 can be quickly bent so that the central portion in the width direction protrudes toward the skin as a whole. .
  • a large clearance CL1 is secured between the top surface 51rt of the rib portion 51r and the bottom surface 51mb of the groove portion 51m.
  • the bottom portion 10mb of the concave portion 10m of the base material 10K quickly moves toward the bottom surface 51mb of the groove portion 51m on the basis of the large clearance CL1.
  • the skin side surface 10 mbss can be more rapidly projected to the skin side than the skin side surface 10 nms of the recess-unformed portion 10 nm where the recess 10 m is not formed in the base material 10 K of the absorbent body. Therefore, the degree of compression of the bottom portion 10 mb can be reduced, and as a result, it is possible to suppress the hardening of the bottom portion 10 mb that may occur when the degree of compression is high.
  • the concave portion 10m is formed in a state where the base sheet 12K of the skin side sheet is disposed on the continuous body 11a of the absorbent core as described above. Therefore, the base material sheet 12K of the skin side sheet is substantially in the state where the recess 10m is formed. Therefore, compared with the case where the base sheet 12K of the skin-side sheet is disposed on the continuous body 11a of the absorbent core after the recess 10m is formed in the continuous body 11a of the absorbent core, the base sheet 12K also Since the concave portion 10m is formed, the absorber 10 that can be easily bent can be manufactured.
  • the upper roll 51u and the lower roll 51d have a rod-like shape as an example of a heating member coaxially with the rotation axes C51 and C51 of the rolls 51u and 51d, respectively.
  • Cartridge heaters 53 and 53 are incorporated. Then, by adjusting the amount of electric power (W) supplied to the heater 53, the temperature of each side surface 51rs of the rib portion 51r of the upper roll 51u and the side surface 51ms of the groove portion 51m of the lower roll 51d can be adjusted.
  • W electric power
  • the depth L51m (FIG. 10) of the groove 51m starting from the outer peripheral surface 51ds of the lower roll 51d is greater than or equal to the average value in the thickness direction of the substrate 10K of the absorbent body. And if it becomes like this, the reduction effect of the compression degree of the bottom part 10mb mentioned above can be heightened.
  • the “average value in the thickness direction of the base material 10K” here refers to the base material at a position upstream by 50 cm from the position in the transport direction in which the rib portion 51r of the upper roll 51u forms the recess 10m. It is the average value of the dimension in the thickness direction of 10K.
  • the average value can be obtained, for example, as an average of 10 points in the CD direction (an average value of dimensions in the thickness direction at 10 positions randomly selected in the CD direction).
  • a suction belt conveyor may be used for the transport device 90CV2 (FIG. 8) disposed downstream of the upper and lower rolls 51u and 51d of the recess forming device 50 in the transport direction. And if it does in this way, the following troubles can be prevented beforehand. That is, after the formation of the recess 10m, the base material 10K of the absorbent body is formed so that the central portion in the CD direction, which is the width direction, protrudes to the skin side as shown in FIG. Although it can be bent in a V shape, if the base material 10K of the absorbent body is transported in such a deformed state, troubles such as the base material 10K of the absorbent body being caught by another device arranged in the transport direction Can happen. For example, there is a possibility that the absorbent base material 10K bent in a substantially V shape is caught in the roll gap between the upper and lower rolls 61u and 61d of the cutter device 60 described later and becomes clogged.
  • the suction belt conveyor 90CV2 is disposed downstream of the upper and lower rolls 51u and 51d of the recess forming apparatus 50 as described above, the suction force generated on the upper surface of the endless belt of the conveyor 90CV2
  • the base material 10K of the absorber can be adsorbed on the upper surface of the endless belt.
  • the base material 10K can be transported while the base material 10K of the absorbent body in which the recess 10m is formed is regulated so as to be parallel to the CD direction. Therefore, the occurrence of the above trouble can be prevented in advance.
  • FIG. 12A and 12B are explanatory diagrams thereof. 12A is a schematic plan view of the absorbent body 10K as viewed from above, and FIG. 12B is a view taken along the line BB in FIG. 12A.
  • a pair of upper and lower nip rolls 57u and 57d are arranged in correspondence with the respective end portions 10Ke and 10Ke in the CD direction of the base material 10K of the absorbent body.
  • the pair of upper and lower nip rolls 57u and 57d are configured to be capable of driving rotation or driven rotation with the corresponding end portion 10Ke interposed therebetween.
  • the rotational directions of the pair of upper and lower nip rolls 57u and 57d are directed to the outside in the CD direction from the transport direction by a predetermined angle ⁇ at a position in contact with the end portion 10Ke.
  • the cutter device 60 includes a pair of upper and lower rolls 61 u and 61 d that are driven and rotated along the conveyance direction around a rotation axis C ⁇ b> 61 along the CD direction.
  • the upper roll 61u is a cutter roll having a cutter blade 61c on the outer peripheral surface
  • the lower roll 61d is an anvil roll 61d that receives the cutter blade 61c on the outer peripheral surface.
  • the absorber base material 10 ⁇ / b> K is transported to the cutter device 60 from the recess forming device 50. That is, the base material 10K of the absorbent body in which the concave portion 10m and the point-like compression portion ED10 are formed is conveyed.
  • the base material 10K of an absorber passes between these upper and lower rolls 61u and 61d along a conveyance direction, the base material 10K is pinched by the cutter blade 61c and the outer peripheral surface of the anvil roll 61d. Thereby, the downstream end 10Ked in the transport direction of the base material 10K is cut off. Then, the separated portion 10Ked is conveyed downstream in the conveying direction as the base material 10K of the single-sheet absorber.
  • Such conveyance is performed by a plurality of conveyance devices 90b, 90b ... arranged in the conveyance direction downstream of the cutter device 60 in the conveyance direction.
  • the conveyance speed value (mpm) in the conveyance direction of the substrate 10K of the body includes the position of the cutter device 60 described above, and the conveyance speed value (in the conveyance direction of the substrate 10K of the absorbent body in the upstream side position) mpm). Therefore, on the downstream side of the cutter device 60, a gap G is formed between the absorbent base materials 10K and 10K adjacent to each other in the transport direction based on the difference in the transport speed value.
  • a product pitch P1 approximately the same value as the overall length in the longitudinal direction of the napkin 1). Thereafter, the base material 10K of each absorber is conveyed at the product pitch P1.
  • a joining position P22K of the base sheet 22K of the top sheet 22 is set at a predetermined position P22K downstream of the conveying device 90b adjacent to the immediate downstream of the cutter device 60. That is, a conveyance roller 90R is disposed below the merging position P22K, and the base sheet 22K as a top sheet is conveyed in the form of a continuous sheet continuously in the conveyance direction by the conveyance roller 90R. At the same time, the base material sheet 22K joins the conveyance path of the base material 10K of the single-sheet absorber at the joining position P22K. Further, at the joint position P22K, the adhesive has already been applied to the non-skin side surface, which is the upper surface of the base sheet 22K as the top sheet.
  • the base material 10K of the sheet-like absorbent body is covered and integrated with the top sheet base material sheet 22K by an adhesive at the same time as being covered with the top sheet base material sheet 22K from below. Thereafter, the base material 10K of the single-sheet absorber is transported to the point-like compression unit forming device 70 that is integrated with the base sheet 22K of the top sheet and located downstream in the transport direction.
  • the dotted compression unit forming apparatus 70 has a pair of upper and lower rolls 71u and 71d that are driven and rotated along the conveyance direction around a rotation axis C71 along the CD direction.
  • the outer peripheral surface of the lower roll 71d is opposed to the skin side surface of the base sheet 22K as the top sheet, but the outer peripheral surface of the lower roll 71d is staggered corresponding to the above-described point-like compression part ED.
  • a plurality of convex portions are provided.
  • the outer peripheral surface of the upper roll 71u is facing the non-skin side surface of the base material 10K of the sheet-like absorbent body, the outer peripheral surface of the upper roll 71u is a smooth surface having no convex portions or concave portions. ing. Therefore, when the base material 10K of the single-sheet absorber passes between the upper and lower rolls 71u and 71d along the conveying direction as a unit with the base material sheet 22K of the top sheet, the base material sheet The convex part is pushed into the skin side surface of 22K, and thereby, the above-described point-like compression part ED is formed on the skin side surface of the base material sheet 22K.
  • the base sheet 22K as a top sheet and the base material 10K as a single-sheet absorber are compressed together in the thickness direction and firmly joined and integrated. Therefore, the said point compression part ED functions also as a junction part which joins firmly the base material sheet
  • the formation of the point compression part ED performed by 70 corresponds to the “joint part forming step” in the claims.
  • the base sheet 10K of the single-sheet absorbent body in which the base sheet 22K of the top sheet is firmly joined and integrated in such a point compression unit ED is more in the transport direction than the point compression unit forming device 70. It is conveyed to the linear compression part forming apparatus 80 located downstream.
  • Linear compression unit forming apparatus 80 The linear compression unit forming device 80 also has a pair of upper and lower rolls 81u and 81d that are driven and rotated along the transport direction around the rotation axis C81 along the CD direction.
  • the outer peripheral surface of the lower roll 81d faces the skin side surface of the base sheet 22K of the top sheet, but the outer roll 81d has an arrangement pattern corresponding to the linear compression portion EL described above.
  • a plurality of linear convex portions (corresponding to the second pushing member, not shown) are provided.
  • the outer peripheral surface of the upper roll 81u faces the non-skin side surface of the base sheet 10K of the sheet-like absorbent body, but the outer peripheral surface of the upper roll 81u is a smooth surface having no convex portions or concave portions. ing. Therefore, when the base material 10K of the single-sheet absorbent body passes between the upper and lower rolls 81u, 81d along the transport direction as a unit with the base material sheet 22K of the top sheet, the base material sheet The said linear convex part is pushed in to the skin side surface of 22K, and, thereby, the above-mentioned linear compression part EL is formed in the skin side surface of the base material sheet 22K.
  • the linear compression portion EL Even in such a linear compression portion EL, the base sheet 22K as the top sheet and the base material 10K as the single-sheet absorber are compressed together in the thickness direction and firmly joined and integrated. Therefore, the linear compression portion EL also functions as a joining portion that firmly joins the base sheet 22K of the top sheet and the base material 10K of the single-sheet absorber, and therefore, this linear compression portion forming apparatus
  • the formation of the linear compression portion EL performed by No. 80 corresponds to the “joining portion forming step” in the claims.
  • the single-sheet absorbent base material 10K in which the top sheet base material sheet 22K is firmly joined and integrated in such a linear compression section EL is transported downstream in the transport direction.
  • the absorber 10 is produced.
  • the positional relationship in the conveyance direction between the above-described point-like compression unit forming device 70 and the linear compression unit forming device 80 is in any order, that is, may be opposite to the above.
  • FIG. 13 is an explanatory diagram of a manufacturing apparatus 30a for the absorbent body 10 according to a modification of the present embodiment.
  • the dotted compression unit forming device 70 and the linear compression unit forming device 80 are arranged at a position downstream of the recess forming device 50 in the transport direction.
  • this modification is mainly different in that the concave portion forming device 50 is disposed at a position downstream of the dotted compression portion forming device 70 and the linear compression portion forming device 80 in the transport direction.
  • Other points are generally the same as those in the above-described embodiment. Therefore, below, this difference is mainly demonstrated, the same code
  • the pair of upper and lower rolls 51u and 51d of the recess forming device 50 are a pair of upper and lower rolls 71u and 71d of the point-like compression unit forming device 70 and a pair of upper and lower rolls of the linear compression unit forming device 80. It is arranged at a position downstream of 81u and 81d in the transport direction. Therefore, in this modified example, the pair of upper and lower rolls 51u and 51d of the recess forming device 50 are firmly joined and integrated with the base sheet 22K of the top sheet by the point-like compression part ED and the linear compression part EL. A recess 10m is formed on the substrate 10K of the absorbent body.
  • the recess 10m is substantially formed on the base sheet 22K of the top sheet.
  • the top sheet base is formed on the single-sheet absorbent base material 10K.
  • the base material sheet 22K is also formed with the concave portion 10m, so that the absorbent body 10 that can be easily bent can be manufactured.
  • the absorbent body 10 has the recess 10 m formed in a groove shape extending over the entire length in the longitudinal direction, but is not limited thereto.
  • a plurality of recesses 10m, 10m,... May be discretely formed side by side in the longitudinal direction.
  • formation of such a recessed part 10m is implement
  • the groove 51m is provided on the outer peripheral surface of the lower roll 51d over the entire circumference in the rotational direction as in the above-described embodiment, but the above-described annular rib portion is provided on the outer peripheral surface of the upper roll 51u.
  • island-shaped convex portions (not shown) are arranged in a straight line in the rotation direction.
  • the shape of the top surface of the convex portion may be a rectangle or a parallelogram.
  • the recess forming apparatus 50 is configured such that the top surface 51rt of the rib portion 51r is inserted into the groove portion 51m in a state where the rib portion 51r is most pushed into the groove portion 51m.
  • the skin side surface 10mbss of the bottom 10mb of the recess 10m protrudes more than the skin side surface 10nmss of the recess-unformed portion 10nm in the base material 10K of the absorbent body, and at the positions on both sides in the CD direction of the recess 10m.
  • the top surface 51rt of the rib portion 51r may not be inserted into the groove portion 51m.
  • the absorbent base material 10K is continuously transported in the transport direction without stopping, whereby the recess forming apparatus 50 in FIG. 9A is transporting the absorbent base material 10K.
  • a recess 10m was formed in the base material 10K.
  • the base material 10K may be intermittently transported in the transport direction, and the recess 10m may be formed on the base material 10K being transported.
  • the following apparatus can be illustrated as the recessed part formation apparatus 50.
  • the apparatus 50 includes a male member (not shown) disposed above the base material 10K and a female member (not illustrated) disposed below the base material 10K.
  • a rib portion having a shape corresponding to the concave portion 10m is formed to protrude on the lower surface of the male member, and a rib portion is formed on the horizontal upper surface of the female member at a position facing the rib portion.
  • a groove portion is formed in a size that allows insertion of a groove.
  • the male member is configured to reciprocate in the vertical direction by an appropriate actuator such as a hydraulic cylinder. Therefore, the male member descends toward the female member while the base material 10K is stopped to be conveyed, and as a result, the rib portion is pushed into the base material 10K of the absorbent body and the concave portion is formed in the base material 10K. 10 m is formed.
  • the male member rises and leaves the base material 10K. After that, when a predetermined amount of transport operation is performed in the transport direction with respect to the base material 10K, the base material 10K again. The conveyance is stopped, and the male member is lowered while the conveyance is stopped. And by repeating this process, the concave portion 10m can be formed also on the base material 10K of the absorber that is intermittently conveyed.
  • the sanitary napkin 1 as illustrated in FIG. 2 is illustrated as an absorbent article, but the present invention is not limited to this.
  • the absorbent article may be a panty liner.
  • the sanitary napkin 1 as an example of the absorbent article has the pair of wing portions 1w and 1w as shown in FIG. 2, but is not limited thereto. That is, the wing portion 1w may not be provided.
  • the absorbent core continuous body 11a as the base material of the absorbent core 11 is formed by the fiber stacking apparatus 34 of FIG. 8, but is not limited thereto.
  • a pulp air laid nonwoven fabric may be used as the base material.
  • a feeding device (not shown) for feeding the non-woven fabric from the material coil of the pulp air-laid non-woven fabric (those obtained by winding the pulp air-laid non-woven fabric in a coil shape) is provided.
  • the fiber stacking device 34 can be omitted.
  • the absorbent core 11 is covered with the two sheets of the skin side sheet 12 and the non-skin side sheet 13, but is not limited to this.
  • one or both of the skin side sheet 12 and the non-skin side sheet 13 may be omitted.
  • the manufacturing apparatus 30 of the absorbent body 10 in FIG. 8 one or both of the base sheet 12K of the skin side sheet and the base sheet 13K of the non-skin side sheet are omitted.
  • the dotted compression part ED and the linear compression part EL of FIG. 2 are provided on the skin side surface of the top sheet 22, but the present invention is not limited thereto.
  • one or both of the point compression unit ED and the linear compression unit EL may be omitted.
  • one or both of the point-like compression unit forming device 70 and the linear compression unit forming device 80 are omitted.

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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

L'invention concerne un procédé de fabrication d'un absorbant absorbant les liquides 10 destiné à être utilisé dans un article absorbant 1 ayant des sens dans la longueur, la largeur et l'épaisseur, l'absorbant 10 comportant un enfoncement 10m dans sa partie centrale dans le sens de la largeur d'une surface côté non-peau 10sn dans le sens de l'épaisseur. Le procédé comprend une étape de transport pour transporter un matériau de base absorbant 10K dans un sens de transport, et une étape de formation d'enfoncement pour former l'enfoncement 10m dans le matériau de base absorbant 10K par poussée d'un élément de poussée 51r depuis le côté non-peau dans le sens de l'épaisseur jusqu'à une position, qui correspond à ladite partie centrale, d'une surface côté non-peau 10Ksn du matériau de base absorbant 10K. Dans l'étape de formation de l'enfoncement, des sections très comprimées 10p, 10p ayant un degré de compression plus élevé à celui d'un fond 10mb de l'enfoncement 10m sont formées à des positions situées de part et d'autre du fond 10 mb dans le sens de la largeur, sur la base de l'enfoncement de l'élément de poussée 51r, et une surface côté peau 10mbss du fond 10mb dans le sens de l'épaisseur est amenée à saillir côté peau au-delà d'une surface côté peau 10nmss, dans le sens de l'épaisseur, d'une partie 10nm du matériau de base absorbant 10K où l'enfoncement 10m n'est pas formé.
PCT/JP2016/082757 2016-11-04 2016-11-04 Procédé de fabrication d'un absorbant pour article absorbant, et dispositif associé WO2018083774A1 (fr)

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PCT/JP2016/082757 WO2018083774A1 (fr) 2016-11-04 2016-11-04 Procédé de fabrication d'un absorbant pour article absorbant, et dispositif associé
CN201680090047.9A CN109843236A (zh) 2016-11-04 2016-11-04 吸收性物品的吸收体的制造方法及制造装置
JP2017510692A JP6171118B1 (ja) 2016-11-04 2016-11-04 吸収性物品に係る吸収体の製造方法、及び製造装置

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WO2023249001A1 (fr) * 2022-06-20 2023-12-28 ユニ・チャーム株式会社 Procédé et appareil de fabrication d'un corps absorbant, et procédé de fabrication d'un article absorbant

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Publication number Priority date Publication date Assignee Title
CN217186765U (zh) * 2021-01-26 2022-08-16 王子控股株式会社 吸收性物品的制造装置及吸收性物品

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