JP2006158676A - Absorbent body, manufacturing method of absorbent body and absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the absorbency of an absorbent body and reduce the width of a sheet necessary for manufacturing the absorbent body by clarifying edges of coating areas of adhesive in the width directional both sides. <P>SOLUTION: An absorbent core 22 of an absorbent article is provided with a first sheet 221 and a second sheet 222 whose main surfaces opposed to each other are coated with hot-melt adhesive respectively, and SAP (Super Absorbent Polymer) 223 stuck thereto with its clamped between the both sheets. In the absorbent core 22, the hot-melt adhesive is applied to the second sheet 222 by a contact type to clarify the edges of the hot-melt adhesive applied to the both-side portions 2222. This method can reduce the with of the first sheet 221 and the second sheet 222 necessary for the manufacture of the absorbent core 22. The hot-melt adhesive is intermittently applied to a portion corresponding to the SAP area 2231 of the second sheet 222 so as to secure the absorbency of the absorbent core 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an absorber that absorbs liquid and a method for producing the same, and preferably, the absorber is used for an absorbent article that receives excrement from a wearer.

  Conventionally, as absorbent bodies used for disposable diapers or the like, those formed by sandwiching pulverized pulp and a water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) with a nonwoven fabric or the like have been used. On the other hand, in recent years, by omitting pulverized pulp that causes a feeling of stiffness when worn, thin absorbent bodies with excellent wear feeling have also been used, and in order to improve the absorbability of such thin absorbent bodies The technology has been proposed.

For example, in Patent Document 1, the water absorbent resin powder is bonded onto the adhesive layer formed in two regions sandwiching the water absorbent resin powder non-existing region on the upper surface of the first nonwoven fabric, and the first nonwoven fabric and the lower surface are bonded. An ultra-thin absorbent sheet body formed by sandwiching the water-absorbent resin powder with a second nonwoven fabric having an adhesive layer formed on almost the entire area is described. In Patent Document 1, the adhesive layer on the first nonwoven fabric is a network formed by randomly attaching a number of fine fiber hot melt adhesives, and the adhesive layer on the second nonwoven fabric is spiral. By superposing a plurality of linear hot melt adhesives having a trajectory, it is superior in air permeability and high absorbency is ensured without inhibiting the swelling of the water absorbent resin powder during water absorption. A technique for realizing a thin absorbent sheet body is disclosed.
International Publication No. 01/088943 Pamphlet

  By the way, in the ultra-thin absorbent sheet body of Patent Document 1, the adhesive layer on the first nonwoven fabric and the second nonwoven fabric is a curtain spray coater and a spiral arranged in a non-contact state with respect to the nonwoven fabric above the nonwoven fabric. It is formed of a hot melt adhesive that is discharged linearly from the spray gun nozzle toward the nonwoven fabric. When the adhesive is applied by such a non-contact type application method, the edge of the adhesive application area on both sides in the width direction of the nonwoven fabric becomes unclear, so that the adhesive protrudes outside the nonwoven fabric. Therefore, it is necessary to set the application region of the adhesive to a certain extent inside the edge of the nonwoven fabric so that it does not adhere to the manufacturing apparatus. As a result, on both sides in the width direction of the ultra-thin absorbent sheet body, a blank area where the adhesive is not applied or insufficiently applied becomes large, and the width of the nonwoven fabric necessary for manufacturing the absorbent body is increased. It gets bigger.

  The present invention has been made in view of the above-described problems, and ensures the absorbability of the absorbent body and makes the sheet necessary for manufacturing the absorbent body by clarifying the edges of the adhesive application area on both sides in the width direction. The purpose is to reduce the width of.

  Invention of Claim 1 is a manufacturing method of an absorber, Comprising: The process of apply | coating an adhesive agent to one main surface of a 1st sheet | seat, b) Contact type to one main surface of a 2nd sheet | seat And c) the main surfaces of the first sheet and the second sheet to which the adhesive is applied, with the absorbent material disposed in a plurality of areas separated from each other, And a process of adhering the first sheet and the second sheet to the absorbent material, and adhering the first sheet and the second sheet to each other on both sides in the width direction of the absorbent material. In the step b), the adhesive is applied intermittently at least in a portion corresponding to the plurality of regions on the second sheet, and the first material is formed on both sides of the absorbent material in the width direction. In the part facing the seat Serial adhesive is continuously applied in the longitudinal direction.

  Invention of Claim 2 is a manufacturing method of the absorber of Claim 1, Comprising: Application | coating of the adhesive agent to the said 1st sheet | seat in the said a process is performed by a contact type.

  Invention of Claim 3 is an absorber, Comprising: The 1st sheet | seat with which the adhesive agent was apply | coated to one main surface, and the main surface facing the said one main surface of the said 1st sheet contact type And the second sheet coated with the adhesive and disposed in a plurality of regions separated from each other, and sandwiched between the first sheet and the second sheet and adhered to the first sheet and the second sheet And an absorbent material to which the first sheet and the second sheet are bonded to each other on both sides in the width direction, and the application of the adhesive is intermittently performed at least in a portion corresponding to the plurality of regions on the second sheet In addition, the adhesive is continuously applied in the longitudinal direction to portions facing the first sheet on both sides of the absorbent material in the width direction.

  Invention of Claim 4 is an absorber of Claim 3, Comprising: The cutting state in the edge of the said width direction of the said 1st sheet | seat and the said 2nd sheet | seat is the same state as before adhesion | attachment.

  Invention of Claim 5 is an absorber of Claim 3 or 4, Comprising: The said absorptive material is arrange | positioned at the stripe form along the said longitudinal direction.

  Invention of Claim 6 is an absorbent article which receives excrement from a wearer, Comprising: The absorber in any one of Claim 3 thru | or 5, and the main surface by the side of the wearer of the said absorber are provided. A top sheet for covering, and a back sheet for covering the other main surface of the absorber.

  In this invention, while ensuring the absorptivity of an absorber, the width | variety of a sheet | seat required for manufacture of an absorber can be made small by clarifying the edge of the application | coating area | region of the adhesive agent in the both sides of the width direction.

  In the inventions of claims 2 and 4, the manufacture of the absorber can be simplified. In invention of Claim 5, the absorptivity of an absorber can be improved more. In invention of Claim 6, the manufacturing cost of an absorbent article can be reduced.

  FIG. 1 is a plan view showing an absorbent article 1 according to the first embodiment of the present invention. The absorbent article 1 that receives excrement from the wearer is used as a so-called open-type disposable diaper or the like that is worn around the waist around a portion that contacts the abdomen and a portion that contacts the back of the wearer. Is done.

  As shown in FIG. 1, the absorbent article 1 includes a substantially sheet-like main body 2 and the longitudinal direction of the main body 2 over almost the entire length in the longitudinal direction of the main body 2 (that is, the Y direction in FIG. 1). And a pair of side wall portions 3 provided on both sides in the width direction perpendicular to (i.e., (+ X) side and (-X) side), and one end portion ((-Y) side in the longitudinal direction of the main body portion 2 And a pair of fastening portions 24 attached to both sides in the width direction at a portion contacting the back side of the wearer). When the absorbent article 1 is worn, the main surface on the (+ Z) side of the main body 2 becomes a surface in contact with the wearer, and the fastening portion 24 is provided by two hook-and-loop fasteners 241 provided on each of the pair of fastening portions 24. Is fastened to the side opposite to the wearer side of the end portion on the (+ Y) side of the main body portion 2 (that is, the portion that contacts the abdomen side of the wearer).

  A plurality of elastic members 31a and 31b extending in the Y direction are joined to each of the pair of side wall portions 3, and when the absorbent article 1 is expanded as shown in FIG. 1, the elastic members 31a and 31b are stretched. It is in a state. In the absorbent article 1, when the inner elastic member 31 a contracts, the inner edge of the side wall 3 rises toward the wearer side on the side of the main body 2, and the outer elastic member 31 b contracts. A solid gather (so-called leg gather) is formed in which the outer edge and the lower sheet of the side wall portion 3 rise toward the wearer side and inward and abut on the vicinity of the base of the wearer's foot when worn. The side wall 3 is formed of a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a meltblown nonwoven fabric, an SMS (spunbond / meltblown / spunbond) nonwoven fabric), a plastic film, or a composite material thereof. . From the viewpoint of improving the comfort of the absorbent article 1, the side wall portion 3 preferably has air permeability.

  FIG. 2 is a cross-sectional view of the absorbent article 1 cut along a plane approximately in the center and perpendicular to the Y direction. As shown in FIGS. 1 and 2, the main body 2 includes an absorbent core 22 that is an absorbent that absorbs moisture, and a top sheet 21 that covers a main surface of the absorbent core 22 on the wearer side (that is, the (+ Z) side). And the back sheet 23 which covers the other main surface of the absorption core 22 is provided, and the side wall part 3 is joined to the side of the absorption core 22. The top sheet 21 and the back sheet 23 are joined around the absorbent core 22 by a hot melt adhesive or the like. In practice, the upper surface of the absorbent core 22 is uneven as shown in FIG. 3 to be described later.

  The top sheet 21 is a non-woven fabric formed of a liquid-permeable material, for example, a hydrophilic fiber, and captures moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunlace nonwoven fabrics, and cellulose, rayon, cotton, and the like are usually used as hydrophilic fibers forming these nonwoven fabrics. As the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surface is hydrophilically treated with an active agent may be used. A plastic film having holes may be used.

  The back sheet 23 is a water-repellent or liquid-impervious nonwoven fabric, and the moisture that has permeated through the top sheet 21 and the moisture once absorbed by the absorbent core 22 are outside the main body 2 (that is, the (−Z) side). ) Prevent exudation. Nonwoven fabrics used as the backsheet 23 are, for example, spunbond nonwoven fabrics, meltblown nonwoven fabrics, and SMS (spunbond / meltblown / spunbond) nonwoven fabrics, and may be subjected to water repellent treatment as necessary. A water-repellent or liquid-impervious plastic film, a composite material of the nonwoven fabric and the plastic film, or the like may be used as the back sheet 23. In this case, from the viewpoint of the wearer's comfort, it is preferable to use a plastic film having air permeability.

  FIG. 3 is an enlarged cross-sectional view of the absorbent core 22. The absorbent core 22 is a first sheet 221 in which a hot melt adhesive is applied to a (+ Z) side principal surface, and a principal surface opposite to the (+ Z) side principal surface of the first sheet 221 (that is, (−Z)). The second sheet 222 having a hot melt adhesive applied to the first sheet 221 and a plurality of regions 2231 separated from each other between the first sheet 221 and the second sheet 222, and the first sheet 221 and An SAP (Super Absorbent Polymer) 223 that is an absorptive material that is sandwiched between the second sheet 222 and bonded to the first sheet 221 and the second sheet 222 is provided. Hereinafter, the main surfaces of the first sheet 221 and the second sheet 222 on which the hot melt adhesive is applied are referred to as “adhesive surfaces” of the respective sheets. The plurality of regions 2231 are elongated regions that are arranged in the width direction of the absorbent core 22 with a predetermined gap and extend in the longitudinal direction. The SAP 223 is disposed on these regions 2231, thereby They are arranged in stripes along the direction. Hereinafter, the region 2231 is referred to as “SAP region 2231”, and the plurality of SAP regions 2231 are collectively referred to as “SAP region group 2232”. Further, the “longitudinal direction” and the “width direction” refer to the longitudinal direction and the width direction of the absorbent core 22 or directions corresponding thereto.

  The first sheet 221 and the second sheet 222 are nonwoven fabrics formed of a liquid-permeable material such as hydrophilic fibers, such as point bond nonwoven fabrics, air-through nonwoven fabrics, spunlace nonwoven fabrics, and the width direction of the SAP region group 2232. Are adhered to each other on both sides (ie, (+ X) side and (−X) side). Note that the first sheet 221 and the second sheet 222 may be tissue paper or the like.

  The hot melt adhesive on the first sheet 221 is applied to almost the entire area except for the vicinity of the edges 2211 on both sides in the width direction of the first sheet 221 as indicated by reference numeral 224 in FIG. The hot melt adhesive on the second sheet 222 is attached to the edge 2221 of the second sheet 222 at both side portions 2222 facing the first sheet 221 on both sides in the width direction of the SAP region group 2232 as indicated by reference numeral 225. It is continuously applied in the longitudinal direction substantially in parallel, and in the portion corresponding to each SAP region 2231 (that is, the portion facing the SAP region 2231 after manufacturing the absorbent core 22), it extends along the longitudinal direction in a very thin stripe shape. Applied. In other words, the hot melt adhesive is intermittently applied in the width direction of the absorbent core 22 to the portion corresponding to each SAP region 2231 on the lower surface of the second sheet 222. Hereinafter, the layers of the hot melt adhesive formed on the first sheet 221 and the second sheet 222 are referred to as “first adhesive layer 224” and “second adhesive layer 225”, respectively.

  FIG. 4 is a diagram showing a flow of manufacturing the absorbent core 22. When the absorbent core 22 is manufactured, first, a hot melt adhesive is applied to the adhesive surface of the first sheet 221 to form the first adhesive layer 224 (step S11). FIG. 5 is a diagram showing an adhesive surface of the first sheet 221 to which the hot melt adhesive is applied. As shown in FIG. 5, the first adhesive layer 224 has a plurality of spiral patterns formed of a hot melt adhesive, and these patterns are arranged above the first sheet 221 so as to be spaced apart from each other. The first sheet 221 is formed by a non-contact type coating method in which a hot melt adhesive is continuously discharged so as to draw a circle from the coated head, and the first sheet 221 is linearly moved relative to the coating head in the longitudinal direction. The In the first adhesive layer 224, adjacent patterns may overlap each other.

  When the first adhesive layer 224 is formed, the SAP 223 is sprayed on portions corresponding to the plurality of SAP regions 2231 (see FIG. 3) on the first sheet 221, and the first sheet is interposed via the first adhesive layer 224. It is arranged on 221 (step S12). Subsequently, a hot melt adhesive is applied to the adhesive surface of the second sheet 222 to form a second adhesive layer 225 (step S13). FIG. 6 is a view showing an adhesive surface of the second sheet 222 to which the hot melt adhesive is applied. In FIG. 6, the hot melt adhesive applied to both side portions 2222 and the portion 2223 corresponding to the SAP region 2231 on the second sheet 222 is shown with parallel oblique lines. Further, in FIG. 6, for easy understanding of the drawing, the boundary of the portion 2223 corresponding to the SAP region 2231 is indicated by a thick line, and the boundary of the other hot melt adhesive is indicated by a thin line.

  FIG. 7 is a perspective view showing a slit nozzle 4 which is a head of a contact type coater used for forming the second adhesive layer 225. The slit nozzle 4 includes an adhesive supply path 41 that communicates in the width direction (that is, the X direction), and a plurality of discharge ports 42 that are provided intermittently in the width direction at the tip portion on the (−Z) side. As shown in FIGS. 6 and 7, when the second adhesive layer 225 is formed by the slit nozzle 4, the slit nozzle 4 is in contact with the tip of the slit nozzle 4 in contact with the adhesive surface of the second sheet 222. By moving the second sheet 222 relatively linearly in the (−Y) direction substantially perpendicular to the width direction of the coater while discharging hot melt adhesive from the plurality of discharge ports 42 of the nozzle 4, a plurality of discharges are performed. A stripe-shaped hot melt adhesive corresponding to the outlet 42 is applied to the main surface of the second sheet 222. In the second sheet 222, since the hot melt adhesive is applied in a contact manner, the edge of the hot melt adhesive application region can be clarified.

  When the first adhesive layer 224 and the second adhesive layer 225 are formed, as shown in FIG. 3, the SAP 223 dispersed on the first sheet 221 (that is, arranged in the plurality of SAP regions 2231) The adhesive surfaces of the first sheet 221 and the second sheet 222 are opposed to each other so that the first sheet 221, the second sheet 222, and the SAP 223 are bonded together, and the first sheet is formed on both sides of the SAP region group 2232 in the width direction. The 221 and the second sheet 222 are bonded to each other (step S14).

  After that, the second sheet 222 is pressed against the first sheet 221 from the side opposite to the bonding surface between the plurality of SAP regions 2231 and heat is applied (so-called heat sealing). The movement of the SAP 223 from the SAP area 2231 is restricted (step S15). Note that ultrasonic bonding may be used instead of heat sealing.

  As described above, in the absorbent core 22, the hot melt adhesive is applied to the second sheet 222 in a contact manner, so that the absorbent core 22 is applied to both side portions 2222 continuous in the longitudinal direction on both sides in the width direction of the absorbent core 22. The edge of the hot melt adhesive formed can be clarified, and the distance between the outer edge in the width direction of both side portions 2222 and the edge 2221 of the second sheet 222 (see FIG. 3) is minimized (for example, approximately 2 to 3 mm). As a result, compared with the case where the hot melt adhesive is applied to the first sheet 221 and the second sheet 222 as a non-contact type in which it is difficult to clarify the edge in the width direction of the hot melt adhesive, the absorbent core The width of the sheet necessary for manufacturing the sheet 22, that is, the width of the first sheet 221 and the second sheet 222 can be reduced.

  In addition, on both sides of the absorbent core 22 in the width direction of the second sheet 222, the blank area where the hot melt adhesive cannot be applied is reduced, and the blank area after the first sheet 221 and the second sheet 222 are bonded together. Therefore, there is no particular problem even if the cut state at the edges 22111, 2221 in the width direction of the first sheet 221 and the second sheet 222 is left in the same state as before bonding. As a result, the manufacturing of the absorbent core 22 can be simplified, the yield can be improved, and the manufacturing cost of the absorbent core 22 and the absorbent article 1 can be reduced.

  In the absorbent core 22, the liquid applied to the second sheet 222 side can quickly pass through the second sheet 222 from the gap between the stripe-shaped hot melt adhesives and reach the SAP 223. In addition, since the second sheet 222 can be flexibly stretched at the portion where the hot melt adhesive is not applied, the inhibition of the swelling of the SAP 223 that has absorbed the liquid by the second sheet 222 is suppressed, and a larger amount Can absorb liquids. Thus, the absorbability of the absorbent core 22 can be ensured by intermittently applying the hot melt adhesive at the site corresponding to the SAP region 2231 of the second sheet 222. The absorptivity of the absorption core 22 here means the speed required to absorb the liquid required for the absorption core 22 and the amount of liquid that can be absorbed. Note that, in the absorbent core 22, a hot melt adhesive may also be applied to a corresponding portion between the SAP regions 2231 of the second sheet 222. If at least the application of the hot melt adhesive at the site corresponding to the SAP region 2231 is intermittent, the absorbability of the absorbent core 22 can be ensured.

  Further, in the absorbent core 22, the hot melt adhesive is applied to the second sheet 222 in a stripe shape, so that the hot melt adhesive is applied to almost the entire surface of the second sheet 222 in a contact manner. The flexibility of the second sheet 222 is maintained and a soft wearing feeling can be secured.

  In the absorbent core 22, since the SAP 223 is disposed in a plurality of SAP regions 2231 that are separated from each other, the movement (ie, diffusion) of the liquid to other parts is prevented by part of the SAP 223 swollen by the liquid absorption. In addition, the liquid applied to the absorbent core 22 can be absorbed easily (rapidly and in large quantities) and exhibits sufficient absorbency even when the liquid is applied multiple times. can do. Moreover, since sufficient air permeability can be ensured between the plurality of SAP regions 2231 even after liquid absorption, it is possible to reduce the stuffiness of the wearing portion and improve the wearing feeling. Furthermore, the SAP 223 is arranged in a stripe shape along the longitudinal direction of the absorbent core 22, thereby preventing the movement of the liquid applied to the absorbent core 22 in the longitudinal direction from being hindered by the swollen SAP 223. . As a result, the applied liquid can be quickly diffused in the longitudinal direction longer than the width direction, and the absorbability of the absorbent core 22 can be further improved.

  Next, an absorbent article according to a second embodiment of the present invention will be described. The absorbent article according to the second embodiment is the same as that shown in FIG. 1 except that the absorbent article 22 includes the absorbent core 22a shown in FIG. In the absorbent core 22a, a first adhesive layer 224a having a different formation method and application region is provided instead of the first adhesive layer 224 shown in FIG. Other configurations are the same as those in FIG. 3, and the same reference numerals are given in the following description.

  The manufacturing process of the absorbent core 22a is substantially the same as in the first embodiment, and in the application process of the hot melt adhesive to the first sheet 221 (step S11 in FIG. 4), the application of the hot melt adhesive is performed. The only difference is that the slit nozzle 4 (see FIG. 7) is contact-type. In the absorbent core 22a, the hot melt adhesive is continuous in the longitudinal direction substantially parallel to the edge 2211 of the first sheet 221 on both side portions 2212 facing the second sheet 222 on both sides in the width direction of the SAP region group 2232. In addition, it is applied along the longitudinal direction in a very thin stripe shape (that is, intermittently with respect to the width direction) at a portion corresponding to each SAP region 2231.

  In the absorbent core 22a, the manufacturing method of the absorbent core 22a can be simplified by adopting the same contact method for applying the hot melt adhesive to the bonding surfaces of the first sheet 221 and the second sheet 222. Further, the hot melt adhesive is intermittently applied at the portions corresponding to the SAP regions 2231 of the first sheet 221 and the second sheet 222, so that the absorbability and breathability of the absorbent core 22 can be ensured.

  In the absorbent core 22a, the edges of the hot melt adhesive applied to both side portions 2212 and 2222 of the first sheet 221 and the second sheet 222 are clarified, so that the absorbent core 22a is the same as in the first embodiment. The widths of the first sheet 221 and the second sheet 222 necessary for manufacturing can be reduced. Furthermore, since the blank area where the hot melt adhesive cannot be applied is reduced on both sides in the width direction of the first sheet 221 and the second sheet 222, the width direction of the first sheet 221 and the second sheet 222 is reduced. The edges 2211, 2221 do not need to be cut off after the two sheets are bonded, and the manufacturing of the absorbent core 22a can be simplified, and the yield can be improved and the absorbent core 22a and the absorbent article according to the second embodiment. The manufacturing cost can be reduced.

  In the absorbent core 22a, the SAP 223 is disposed in the striped SAP region 2231 as in the first embodiment, so that the absorbability of the absorbent core 22 can be further improved and sufficient even after liquid absorption. Therefore, it is possible to improve the feeling of wearing by reducing the stuffiness of the wearing part.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

  In the absorbent core 22 according to the first embodiment, the pattern of the first adhesive layer 224 formed on the first sheet 221 is not limited to a spiral shape, and is, for example, non-contacting above the first sheet 221. The first sheet 221 is linearly moved relative to the coating head while the adhesive is continuously discharged from the coating head arranged in the state, and the first sheet is changed in the direction of dropping the adhesive by air blow or the like. The first adhesive layer 224 having an omega-like pattern may be formed by reciprocating substantially perpendicular to the moving direction of 221.

  Further, the first adhesive layer 224 is formed by melt blow coating (from a plurality of small discharge port groups in which a coating head is disposed in a non-contact state above the first sheet 221 and arranged in the width direction of the coating head. While continuously discharging the molten adhesive, a number of short fiber adhesives obtained by spraying heated air at a high speed onto the adhesive hanging from the coating head in the width direction of the coating head. In other words, it is a coating method of dropping and coating the first sheet 221 moving in the vertical direction, and may be formed by “curtain spray coating”.

  In the manufacturing process of the absorbent core according to the above-described embodiment, either the hot melt adhesive (steps S11 and S13) may be applied to the first sheet 221 and the second sheet 222 first, or both sheets Application to may be performed in parallel. The application of the SAP 223 may be performed on the second sheet 222 via the second adhesive layer 225. In this case, the application of the adhesive to the first sheet 221 and the first sheet 221 and the second sheet are performed. The adhesion to the second sheet 222 is performed by applying an adhesive onto the SAP 223 dispersed on the second sheet 222 (that is, forming the first adhesive layer 224 on the SAP 223), and the first sheet 221 and the second sheet 222. It can be said that it is equivalent to the adhesion. Further, the SAPs 223 are not necessarily arranged in a stripe shape, and may be arranged in a plurality of rectangular regions surrounded by a lattice-like gap, or arranged in a plurality of circular regions arranged in a lattice point shape. Also good.

  In the absorbent core, pulverized pulp may be provided between the first sheet 221 and the second sheet 222. For example, after the pulverized pulp is continuously arranged on the first sheet 221 so as to include the entire SAP region group 2232 and the SAP 223 is sprayed on the pulverized pulp corresponding to the plurality of SAP regions 2231, the first sheet The absorbent core may be formed by bonding 221 and the second sheet 222.

  The absorbent core may be used for, for example, a pants-type disposable diaper, or may be used as an absorbent body such as an auxiliary absorbent or a sanitary short attached to the inside of the disposable diaper. Furthermore, it can be used for agricultural water retention / absorption materials, concrete curing mats, anti-condensation sheets, poultices, patches, cosmetics and the like.

It is a top view of the absorptive article concerning a 1st embodiment. It is sectional drawing of an absorbent article. It is sectional drawing of an absorption core. It is a figure which shows the flow of manufacture of an absorption core. It is a figure which shows the adhesion surface of a 1st sheet | seat. It is a figure which shows the adhesion surface of a 2nd sheet | seat. It is a perspective view of a slit nozzle. It is sectional drawing of the absorption core of the absorbent article which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorbent article 21 Top sheet 22, 22a Absorption core 23 Back sheet 221 1st sheet 222 2nd sheet 223 SAP
2211, 2221 Edge 2222 Both sides 2223 (corresponding to SAP area) 2231 SAP area S11-S15 Steps

Claims (6)

A method for manufacturing an absorber,
a) applying an adhesive to one main surface of the first sheet;
b) applying an adhesive in a contact manner to one main surface of the second sheet;
c) The main surfaces of the first sheet and the second sheet to which the adhesive is applied are opposed to each other with the absorbent material disposed in a plurality of regions separated from each other, and the first sheet and the second sheet Adhering two sheets and the absorbent material, and adhering the first sheet and the second sheet to each other on both sides in the width direction of the absorbent material;
With
In the step b), the application of the adhesive is intermittent in at least portions corresponding to the plurality of regions on the second sheet, and the first sheet is formed on both sides of the absorbent material in the width direction. The manufacturing method of the absorbent body, wherein the adhesive is continuously applied in a longitudinal direction to a portion facing the surface. It is a manufacturing method of the absorber according to claim 1,
The method for producing an absorbent body, wherein the adhesive is applied to the first sheet in the step a) by a contact method. An absorber,
A first sheet having an adhesive applied to one main surface;
A second sheet in which an adhesive is applied to the main surface of the first sheet facing the one main surface in a contact manner;
Arranged in a plurality of regions that are separated from each other, sandwiched between the first sheet and the second sheet and bonded to the first sheet and the second sheet, and on both sides in the width direction, the first sheet and the An absorbent material to which the second sheet is bonded together;
With
The adhesive is intermittently applied at a portion corresponding to the plurality of regions on the second sheet, and at a portion facing the first sheet on both sides of the absorbent material in the width direction. An absorber, wherein an adhesive is continuously applied in a longitudinal direction. The absorber according to claim 3, wherein
The absorbent body, wherein the cut state at the edges in the width direction of the first sheet and the second sheet is the same as that before bonding. The absorber according to claim 3 or 4,
The absorbent material, wherein the absorbent material is arranged in a stripe shape along the longitudinal direction. An absorbent article that receives excrement from a wearer,
An absorber according to any one of claims 3 to 5;
A top sheet covering the main surface of the absorbent body on the wearer side;
A backsheet covering the other main surface of the absorber;
An absorbent article comprising:

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