JP6588789B2 - Sheet material and method for producing sheet material - Google Patents

Description

  The present invention relates to a sheet-like material used for an absorbent article and a method for producing the sheet-like material.

  In general, an absorbent used for absorbent articles such as disposable diapers, sanitary napkins, incontinence pads, etc. is prepared by placing an absorbent material containing pulp fibers and a water-absorbing polymer on an outer peripheral surface of a rotating drum on an air stream. It is manufactured by sucking and depositing in the formed recess, and then covering the piled body deposited in the recess with a water-permeable sheet material. However, the weight of the water-absorbing polymer is very heavy compared to the weight of the pulp fiber, and the water-absorbing polymer is likely to be non-uniformly dispersed. In such a non-uniform absorbent body, swelling inhibition such as gel blocking is likely to occur, and the absorption performance of the water-absorbing polymer cannot be maximized.

  In Patent Document 1, two sheets are fixed by a plurality of fixing portions to form a channel space that is continuous in the longitudinal direction between adjacent fixing portions, and each channel space has a high water absorption property. A body fluid absorber is described in which an absorbent material in which a body fluid absorbent material containing a polymer is integrated with a shrinkable material is disposed. According to the bodily fluid absorber described in Patent Document 1, the entire absorber can be used effectively.

  Moreover, in patent document 2, it has the excretion part slit area | region in which the vertical slit along a vertical direction was formed in the dispersion | distribution state in the excretion part opposing part, and has a central slit area | region in the center part of the horizontal direction and the vertical direction. An absorbent article with an absorber is described. According to the absorbent article described in Patent Document 2, it is possible to enhance the feeling of wearing.

  Patent Document 3 describes an absorbent article including an absorbent body in which four or more rows of slits are arranged at intervals. According to the absorbent article described in Patent Document 3, the rigidity of the absorber can be relaxed and the absorbency can be increased.

JP 2002-224162 A JP2015-42244A Japanese Utility Model Publication No. 63-18122

  However, since the absorbent body described in Patent Document 1 is provided with an absorbent material containing a superabsorbent polymer in each channel space formed by being fixed by a fixing portion, the superabsorbent polymer absorbs body fluid. Even if it swells, it is difficult to move in the thickness direction, and the absorption performance of the superabsorbent polymer cannot be exhibited to the maximum.

  Patent Documents 2 and 3 do not describe anything about the positional relationship between the water-absorbing polymer particles and the slits when the water-absorbing polymer particles absorb the liquid.

  Therefore, this invention is providing the sheet-like material which can eliminate the fault which the prior art mentioned above has. Moreover, this invention is providing the manufacturing method of the sheet-like thing which can eliminate the fault which such a prior art has.

  The present invention relates to a long base portion having a horizontal direction, a vertical direction longer than the horizontal direction, and a thickness direction, and water absorption fixed to the surface of one surface of the long base portion. A plurality of absorptive units each having an absorbent polymer particle, and each of the absorptive units is arranged in such a manner that its longitudinal direction faces at least one direction. Before the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles are arranged on the inner side of both side edges along the longitudinal direction of the elongated base portion, and the water-absorbing polymer When the particles absorb the liquid, the water-absorbing polymer particles swell beyond the side edge portion of the elongated substrate portion, and the position of the elongated substrate portion is liquid in the thickness direction. Providing a sheet that is made different from the position before absorbing It is intended.

  In addition, the present invention is fixed to a surface of a long base portion having a horizontal direction, a vertical direction longer than the horizontal direction, and a thickness direction, and one surface of the long base portion. A plurality of absorptive units each having a water-absorbing polymer particle, wherein each of the absorptive units is arranged so that its longitudinal direction is at least in one direction, and the water-absorbing polymer particles have liquid. Prior to absorption, the water-absorbing polymer particles are arranged on the inner side of the side edges along the longitudinal direction of the elongated base portion, and when the water-absorbing polymer particles absorb the liquid, The water-absorbing polymer particles swell beyond the side edge portion of the elongated substrate portion, and the position of the elongated substrate portion is different from the position before absorbing the liquid in the thickness direction. A method for producing a sheet-like article for an absorbent article, A water-absorbing polymer particle spraying step for spraying the water-absorbing polymer particles on the surface of one surface of the shaped base sheet, and the absorption by cutting the base material sheet on which the water-absorbing polymer particles are sprayed The manufacturing method of a sheet-like object provided with the cutting process which forms multiple property units is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the sheet-like thing which does not generate | occur | produce swelling inhibition easily and can fully exhibit the absorption performance of a water absorbing polymer is provided. Moreover, according to this invention, the manufacturing method of the sheet-like material which can manufacture such a sheet-like material efficiently is provided.

FIG. 1 is a cross-sectional view schematically showing an embodiment of a sheet-like article for an absorbent article of the present invention, and shows a state before water-absorbing polymer particles absorb liquid. FIG. 2 is a cross-sectional view schematically showing a state where the water-absorbing polymer particles swell after absorbing the liquid in the sheet-like material shown in FIG. FIG. 3 is a perspective view of the sheet-like material shown in FIG. 1 viewed from the upper surface side. FIG. 4 is a schematic view showing an embodiment of the sheet-like product manufacturing apparatus shown in FIG. FIG. 5 is a schematic perspective view of the base sheet cut portion included in the manufacturing apparatus shown in FIG. 4. FIG. 6 is a cross-sectional view schematically showing another embodiment of the sheet-like material of the present invention, and shows a state before the water-absorbing polymer particles absorb the liquid (corresponding to FIG. 1). FIG. 7 is a cross-sectional view schematically showing another embodiment of the sheet-like material of the present invention, and shows a state before the water-absorbing polymer particles absorb the liquid (corresponding to FIG. 1). FIG. 8 is a schematic view showing an embodiment of the sheet-like product manufacturing apparatus shown in FIG. FIG. 9 is a cross-sectional view schematically showing another embodiment of the sheet-like material of the present invention, and shows a state before the water-absorbing polymer particles absorb the liquid (corresponding to FIG. 1). FIG. 10 is a cross-sectional view schematically showing another embodiment of the sheet-like material of the present invention, showing a state before the water-absorbing polymer particles absorb the liquid (corresponding to FIG. 1). FIG. 11 is a perspective view of another embodiment of the sheet-like material of the present invention viewed from the upper surface side, and shows a state before the water-absorbing polymer particles absorb the liquid (corresponding to FIG. 3).

The present invention will be described below based on preferred embodiments with reference to the drawings.
The sheet-like material of the present invention is used for absorbent articles. Absorbent articles are generally used for absorbing and holding excretory body fluids such as urine and menstrual blood. Absorbent articles include, for example, disposable diapers, sanitary napkins, incontinence pads, etc., but are not limited to these, and widely include articles used to absorb liquid discharged from the human body. It is.

  The absorbent article typically includes a liquid-retaining absorbent, a top sheet disposed on the skin facing surface side of the absorbent body, and a back sheet disposed on the non-skin facing surface side of the absorber. And have. And this absorber has the sheet-like material of this invention, and the liquid-permeable core wrap sheet which coat | covers this sheet-like material. That is, the sheet-like material of the present invention is used for an absorbent article, for example, as an absorbent body covered with a liquid-permeable core wrap sheet. In the absorbent article, a so-called sublayer sheet may be disposed on at least one of the skin facing surface and the non-skin facing surface of the absorbent body.

  As the top sheet, the back sheet, and the core wrap sheet, materials usually used in the technical field can be used without particular limitation. For example, as the surface sheet, liquid permeable sheets such as various nonwoven fabrics and perforated films subjected to a hydrophilic treatment can be used. As the back sheet, a liquid permeable or water repellent sheet such as a thermoplastic resin film or a laminate of the film and a nonwoven fabric can be used. The back sheet may have water vapor permeability. Further, as the core wrap sheet, a thin paper (tissue paper) manufactured by a wet papermaking method, a liquid-permeable nonwoven fabric, or the like can be used. Moreover, the said absorbent article may further comprise various members according to the specific use of this absorbent article. Such members are known to those skilled in the art. For example, when applying an absorbent article to a disposable diaper or a sanitary napkin, a pair or two or more pairs of leak-proof cuffs can be disposed on the left and right sides of the topsheet.

  1 and 2 are sectional views schematically showing a sheet-like material 1 (hereinafter also simply referred to as “sheet-like material 1”) which is a preferred embodiment of the sheet-like material of the present invention. Yes. The sheet-like material 1 shown in FIG. 1 shows a state before the water-absorbing polymer particles absorb the liquid (hereinafter, also simply referred to as “state before use”). Also, the sheet-like material 1 shown in FIG. 2 shows a state in which the water-absorbing polymer particles have absorbed the liquid and swelled (hereinafter also simply referred to as “the state after swelling”). Here, the state after swelling means the state of particles of the water-absorbing polymer after the sheet-like material 1 is immersed for 60 minutes in a physiological saline (0.9% by mass sodium chloride aqueous solution) adjusted to 25 ° C. means. FIG. 3 shows a perspective view of the sheet-like object 1 in a state before use.

  A sheet-like object 1 shown in FIG. 1 has a long direction having a horizontal direction (X direction), a vertical direction (Y direction) longer than the horizontal direction (X direction), and a thickness direction (Z direction). And an absorbent unit 4 comprising a water-absorbing polymer particle 3 (hereinafter also simply referred to as “water-absorbing polymer 3”) fixed to the surface of one surface of the long base portion 2 and the long base portion 2. A plurality of the absorptive units 4 are arranged such that the longitudinal direction (Y direction) faces at least one direction. Here, the horizontal direction (X direction), the vertical direction (Y direction), and the thickness direction (Z direction) of the elongated base portion 2 are the horizontal direction (X direction) and the vertical direction (Y direction) of the absorbent unit 4. ) And the thickness direction (Z direction). In this embodiment, the sheet material 1 also matches the horizontal direction (X direction), the vertical direction (Y direction), and the thickness direction (Z direction). (See FIG. 3). In addition, the longitudinal direction (Y direction) of the sheet-like object 1 corresponds with the wearer's front-back direction when the absorbent article provided with the sheet-like object 1 is worn.

  1 is formed by arranging a plurality of absorbent units 4 such that the longitudinal direction (Y direction) of the absorbent unit 4 faces the longitudinal direction (Y direction) of the sheet 1. (See FIG. 3). From the viewpoint of ease of movement of the absorbent unit 4 between the absorbent units 4 and 4 adjacent to each other in the lateral direction (X direction) of the long base portion 2 (absorbent unit 4), inclusions are not present. It exists. That is, the absorptive unit 4 is not wrapped with inclusions. In FIG.1 and FIG.2, the upper surface which is one surface of the elongate base | substrate part 2 is a skin opposing surface which opposes a wearer's skin, and the lower surface which is the other surface of the elongate base | substrate part 2 is a back surface It is a non-skin facing surface that faces the sheet. That is, the surface opposite to one surface is the other surface.

The absorbent unit 4 of the absorber 1 is formed in a strip shape that is long in the longitudinal direction Y in a state before use. In a state before use, the absorptive unit 4 may have water-absorbing polymer particles 3b (see FIG. 1) existing across the side edge 2s of the elongated base 2 as described later. The length Lx in the lateral direction X is formed slightly longer than the width (W2) of the long base portion 2 described later. Specifically, the length Lx in the transverse direction X of the absorbent unit 4 is preferably about 0.5 mm to 10 mm, more preferably about 1 mm to 5 mm. The length Ly in the longitudinal direction Y of the absorbent unit 4 is preferably about 20 to 200 times, more preferably about 40 to 80 times the length Lx in the lateral direction X. On condition that this magnification is satisfied, the length Ly in the longitudinal direction Y of the absorbent unit 4 is preferably about 10 mm to 500 mm, more preferably about 200 mm to 400 mm. Thus, the absorptive unit 4 has a very elongated shape.
In a state before use, the magnitude relationship of the length Lx in the lateral direction (X direction) of the absorbent unit 4 with respect to the width W2 of the long base portion 2 is preferably 0 μm <(Lx−W2) <1400 μm. More preferably, 200 μm <(Lx−W2) <1000 μm.

  In the present embodiment, the sheet-like object 1 is formed in a rectangular shape that is long in the vertical direction (Y direction) in a state before use. The sheet-like material 1 has a length in the vertical direction (Y direction) of about 100 mm to 1000 mm, and a length in the horizontal direction (X direction) of about 50 mm to 300 mm.

  The sheet-like object 1 has an absorption region AT in which a plurality of absorbent units 4 are arranged so as to face at least one direction before use. The ratio of the absorption region AT to the entire sheet-like material 1 is 20% from the viewpoint of easily absorbing the liquid in the region where the water-absorbing polymer particles 3 are fixed, in a plan view of the sheet-like material 1 before use. Preferably, it is 50% or more, more preferably 100% or less, still more preferably 90% or less, specifically 20% or more and 100% or less. It is preferable that it is 50% or more and 90% or less. Here, the ratio of the absorption area AT is 100%, for example, a plurality of sheet-like materials such that the longitudinal direction (Y direction) of the absorbent unit 4 faces the longitudinal direction (Y direction) of the sheet-like material 1. 1 in the case of juxtaposing in the lateral direction (X direction) means a form that is arranged in the entire region between both ends in the longitudinal direction (Y direction) of the sheet-like object 1 or of the absorbent unit 4 When juxtaposed in the longitudinal direction (Y direction) of the plurality of sheet-like objects 1 such that the longitudinal direction (Y direction) faces the lateral direction (X direction) of the sheet-like object 1, the longitudinal direction ( It means a form that is arranged over the entire region between both side portions along the (Y direction). Note that, when the sheet-like object 1 is viewed in plan, a region other than the absorption region AT becomes a non-slit region NT described later.

  When arranging the absorbent unit 4 so that the longitudinal direction (Y direction) of the absorbent unit 4 faces the longitudinal direction (Y direction) of the sheet-like article 1, three or more absorbent units 4 are arranged per sheet-like article. Preferably, 50 or more are arranged, more preferably 1000 or less, more preferably 500 or less, more specifically, 3 or more. 1000 or less are preferably arranged, and more preferably 50 to 500 are arranged. Further, when the absorbent unit 4 is arranged so that the longitudinal direction (Y direction) of the absorbent unit 4 faces the lateral direction (X direction) of the sheet-like object 1, three or more absorbent units 4 are arranged per sheet-like object. Preferably 50 or more, more preferably 3500 or less, more preferably 2000 or less, specifically 3 The number is preferably 3 or more and 3500 or less, and more preferably 50 or more and 2000 or less.

  The sheet-like object 1 before use is such that the longitudinal direction (Y direction) of the absorbent unit 4 is directed to the longitudinal direction (Y direction) of the sheet-like article 1 from the viewpoint of ease of conveyance during manufacture. It is preferable that a plurality of the absorbent units 4 are arranged, and each of the absorbent units 4 is parallel to the longitudinal direction (Y direction) so that the plurality of absorbent units 4 do not cross each other. More preferably, it is arranged in the Y direction). In the sheet-like material 1 shown in FIG. 1, a plurality of absorbent units 4 each having a long base portion 2 having a uniform width are used, and the longitudinal direction (Y direction) of the absorbent unit 4 is the longitudinal direction of the sheet-like material 1. It is formed so as to be parallel to the longitudinal direction (Y direction) of the sheet-like object 1 so as to face the direction (Y direction).

  The sheet-like object 1 is a non-slit region in which a plurality of long base portions 2 are connected in the horizontal direction (X direction) on both ends in the vertical direction (Y direction) or on both sides along the vertical direction (Y direction). NT is preferably provided, and the sheet-like object 1 of the present embodiment includes non-slit regions NT at both ends in the vertical direction (Y direction) as shown in FIG. That is, in the sheet-like material 1 of the present embodiment, a single base sheet is provided, and non-slit regions NT are provided at both ends in the longitudinal direction (Y direction) of the base sheet, and the non-slit A long base portion formed by a cutting process described later is provided between the regions NT. When such a non-slit region NT is provided, the sheet shape of the sheet-like object 1 is easily maintained in a state before use, and the structure is less likely to be disturbed. It is preferable that the water-absorbing polymer particles 3 are not arranged in the non-slit region NT. Thus, if the water-absorbing polymer particles 3 are not arranged in the non-slit region NT, even if the liquid is absorbed, the water-absorbing polymer particles 3 hardly swell in the non-slit region NT. However, the sheet shape of the sheet-like material 1 is easily maintained, the structure is hardly disturbed, the liquid is easily absorbed in the region where the water-absorbing polymer particles 3 are disposed, and the sheet-like material 1 as a whole is easily balanced. The effect of. In addition, when the sheet-like object 1 is provided with non-slit regions NT at both ends in the longitudinal direction (Y direction) as in the sheet-like object 1 shown in FIG. Is easy to be maintained, the structure is not easily disturbed, and the softness of the absorbent area AT is improved, so that the wearer does not feel uncomfortable. Both ends in the longitudinal direction (Y direction) are fixed to the absorbent article. It is preferable.

In the sheet-like material 1 shown in FIG. 1, the ratio (W2 / W1) of the width (W2) (the length in the lateral direction (X direction)) of the long base portion 2 to the width (W1) of the sheet-like material 1 is From the viewpoints of carrying the water-absorbing polymer, inhibiting swelling, flexibility, air permeability, and maintaining the sheet shape, it is preferably 0.001 or more, more preferably 0.002 or more, and 2 or less, more preferably 0.04 or less, specifically 0.001 or more and 0.2 or less, and preferably 0.002 or more and 0.04 or less. Further preferred.
Preferably, the width (W2) of the elongated base portion 2 is preferably 0.3 mm or more, more preferably 0.6 mm or more, and 10 mm or less from the same viewpoint. Is preferably 2 mm or less, more preferably 1.8 mm or less, specifically preferably 0.3 mm or more and 10 mm or less, and more preferably 0.6 mm or more and 2 mm or less. More preferably, it is 0.6 or more and 1.8 mm or less.

The elongated base portion 2 (base material sheet) constituting the absorbent unit 4 is preferably a hydrophilic sheet from the viewpoint of improving the utilization efficiency of the water-absorbing polymer 3 because the liquid easily diffuses in the absorption region AT. . Examples of the hydrophilic sheet include paper, non-woven fabric, cloth, synthetic sponge formed by foaming synthetic resin, etc. Among them, even if it is thin, the tensile strength is relatively high, and it is thin and can be given flexibility. Therefore, a nonwoven fabric is preferably used. As the non-woven fabric, a hydrophilic non-woven fabric containing hydrophilic fibers as constituent fibers, a hydrophilic non-woven fabric containing synthetic fibers imparted with hydrophilicity as constituent fibers, and the like are preferably used. The basis weight of the nonwoven fabric is preferably 5 g / m ² or more and 100 g / m ² or less, more preferably 10 g / m ² or more and 40 g / m ² or less.

  As the water-absorbing polymer 3 fixed to the surface of one surface of the long base portion 2, various polymers conventionally used in the technical field of the absorbent article can be used. For example, polyacrylic acid Soda, (acrylic acid-vinyl alcohol) copolymer, crosslinked polyacrylic acid soda, (starch-acrylic acid) graft polymer, (isobutylene-maleic anhydride) copolymer and saponified product thereof, potassium polyacrylate, In addition, cesium polyacrylate and the like can be mentioned, and one of these can be used alone, or two or more can be mixed and used. As the water-absorbing polymer particles 3, there are an irregular type, a block type, a bowl type, a spherical particle aggregation type, a spherical type, etc., due to the difference in shape. In 1, a spherical type is used.

  As a method of fixing the water-absorbing polymer particles 3 to the long base portion 2, a method using an adhesive, a method of chemically fixing using hydrogen bonding or the like, or the long base portion 2 is a non-woven fabric. Alternatively, in the case of a cloth, a method of raising the constituent fibers and fixing them between the raised constituent fibers can be mentioned. In the sheet 1 shown in FIGS. 1 and 2, an adhesive 5 is used. ing. That is, the water-absorbing polymer particles 3 of the sheet-like material 1 are fixed to the surface of the elongated base portion 2 via the adhesive 5. In this way, when the water-absorbing polymer particles 3 are fixed to the surface of the long base portion 2 via the adhesive 5, the water-absorbing polymer is in a state before use or after swelling of the sheet-like material 1. The particles 3 are difficult to drop off.

As the adhesive 5, for example, a hot-melt adhesive is preferably used. Examples of the hot melt adhesive include styrene and olefin. Styrene-based hot melt adhesives include styrene-butadiene-styrene copolymer (SBS), styrene-isoprene-styrene copolymer (SIS), and styrene-ethylene-butylene-styrene copolymer that is a hydrogenated product of SBS. (SEBS) and blended hot-melt adhesives obtained by blending two or more of these can be used. Among these, from the viewpoint of easily balancing the tack force and the cohesive force, a blended hot-melt adhesive of SIS and SBS or a blended hot-melt adhesive of SIS and SEBS is preferably used. The application amount of the hot melt adhesive is preferably 0.5 g / m ² or more and 100 g / m ² or less, more preferably 5 g / m ² or more and 50 g / m ² or less.

  The sheet-like material 1 shown in FIG. 1 is in the state before use, that is, before the water-absorbing polymer particles 3 absorb the liquid, the long base portion of the absorbent unit 4 adjacent in the lateral direction (X direction). 2 and 2 are at least partially adjacent from the viewpoint that the sheet shape of the sheet-like material 1 before use is easily maintained, the structure is less likely to be disturbed, and the water-absorbing polymer particles 3 can be arranged at appropriate positions. It is preferable that the long base portions 2 and 2 adjacent in the horizontal direction (X direction) are adjacent to each other over the whole. In addition, in the sheet-like object 1 shown in FIG. 1, the elongate base | substrate parts 2 and 2 adjacent to a horizontal direction (X direction) are adjacent over the whole. Here, “adjacent” means that adjacent long base portions 2 and 2 are adjacent to each other and continue.

  In the state before use as shown in FIG. 1, the sheet-like material 1 has water-absorbing polymer particles 3 inside the side edges 2 s and 2 s along the longitudinal direction (Y direction) of the long base portion 2. It is arranged in. In other words, in a state before use, the water-absorbing polymer particles 3 are arranged in a region sandwiched between the side edges 2 s and 2 s of the long base portion 2.

  And the sheet-like object 1 is in the state after swelling as shown in FIG. 2, and the particles 3 of the water-absorbing polymer exceed the side edge 2s along the longitudinal direction (Y direction) of the elongated base 2. It is designed to swell. Here, the swelling of the water-absorbing polymer particles 3 beyond the side edge portion 2s of the elongated base portion 2 means, in other words, the swollen water absorption shown in FIG. It means that the swollen water-absorbing polymer particles 3 exist across the side edge portion 2s of the elongated base portion 2 like the conductive polymer particles 3a.

  Furthermore, the sheet-like material 1 is configured such that, in the state after swelling as shown in FIG. 2, the position of the elongated base portion 2 is different from the position before absorbing the liquid in the thickness direction (Z direction). ing. Here, in the state after swelling of the sheet-like material 1, the position of the elongated base portion 2 is different from the position before absorbing the liquid in the thickness direction (Z direction). The position of the long base portion 2 in the state after swelling of the polymer particles 3 and the position of the long base portion 2 in the state before use (before swelling) of the water absorbent polymer particles 3 shown in FIG. It means that they are formed differently in the vertical direction. Specifically, there are cases where they are shifted vertically, when they are shifted diagonally, or when both are occurring.

  As described above, as shown in FIG. 1, the sheet-like material 1 of the present embodiment has the water-absorbing polymer particles 3 in the longitudinal direction (Y direction) of the long base portion 2 in a state before use. It is arranged inside the side edge portions 2s, 2s along. Therefore, when the water-absorbing polymer particle 3 absorbs the liquid, the water-absorbing polymer particle 3 swells beyond the side edge 2s of the long base portion 2 and the position of the long base portion 2 is changed. In the thickness direction (Z direction), it is likely to be different from the position before absorbing the liquid, and the effect of preventing the state in which the water-absorbing polymer particles 3 are less likely to permeate the liquid during swelling is achieved. At the same time, as shown in FIG. 2, in the sheet-like material 1 of the present embodiment, in the state after swelling, the water-absorbing polymer particles 3 swell beyond the side edge 2s of the elongated base 2 ( The position of the elongate base portion 2 is different from the position before absorbing the liquid in the thickness direction (Z direction). Therefore, when the sheet-like material 1 is used for an absorbent article, as shown in FIG. 2, when the water-absorbing polymer particles 3 absorb and swell the body fluid, the adjacent absorbent unit 4, 4, even if the water-absorbing polymer particles 3, 3 swollen beyond the side edge 2 s of the long base portion 2 come into contact with each other, the adjacent absorbent units 4, 4 are in the thickness direction (Z direction). ), The collision between the swollen water-absorbing polymer particles 3 and 3 is alleviated, the pressure applied to the swollen water-absorbing polymer particles 3 can be reduced, and the absorption of the body fluid of the water-absorbing polymer particles 3 can be reduced. Hard to block. Therefore, in the sheet-like material 1 of the present embodiment, when the water-absorbing polymer particles 3 are swollen by absorbing the body fluid, the water-absorbing polymer particles 3 are unlikely to inhibit swelling, and the water-absorbing polymer particles 3 The absorption performance can be maximized, so the absorption performance is easy to improve. In particular, since the inclusion 1 is not present between the adjacent absorbent units 4 and 4 in the sheet-like material 1 of the present embodiment, the absorbent unit 4 is easy to move, and the above effects can be more easily achieved. It has become.

  Further, in the sheet-like material 1, in the state after swelling as shown in FIG. 2, the position of the elongated base portion 2 constituting the adjacent absorbent unit 4 is shifted up and down in the thickness direction (Z direction). It is made different, such as slanting. Therefore, the adjacent absorbent units 4 and 4 are easy to move freely in the thickness direction (Z direction), the collision between the swollen water-absorbing polymer particles 3 and 3 is easy to relax, and the swollen water-absorbing polymer particles 3 can be reduced, and it is difficult to inhibit the absorption of the body fluid of the water-absorbing polymer particles 3.

  In the sheet-like material 1, the water-absorbing polymer particles 3 in a swollen state are swollen beyond the side edge 2 s of the long base portion 2, so that the adjacent absorbent units 4, 4 are in the thickness direction (Z The distance between the side edge portions 2s and 2s along the longitudinal direction (Y direction) of the elongated base portion 2 is determined from the viewpoint of making the swelling of the water-absorbent polymer particles 3 more difficult to inhibit. It is preferably larger than the average particle diameter of the water-absorbing polymer particles 3 before use (before swelling) and smaller than the average particle diameter of the water-absorbing polymer particles 3 after swelling. The distance between the side edges 2s, 2s of the long base portion 2 has the same meaning as the width (W2) of the long base portion 2 described above. The average particle diameter of the water-absorbing polymer particles 3 before use (before swelling) is preferably 20 μm or more, more preferably 200 μm or more, and preferably 700 μm or less, 500 μm or less. More specifically, it is preferably 200 μm or more and 700 μm or less, and more preferably 200 μm or more and 500 μm or less. On the other hand, the average particle size of the water-absorbing polymer particles 3 in the swollen state is preferably 200 μm or more, more preferably 800 μm or more, and preferably 3000 μm or less, and 2000 μm or less. More preferably, it is preferably 200 μm or more and 3000 μm or less, and more preferably 800 μm or more and 2000 μm or less. The average particle diameter of the water-absorbing polymer particles 3 is determined by the following measuring method.

<Measurement method of average particle diameter of water-absorbing polymer particles before use>
The average particle diameter in the state before use can measure the diameter or long axis of the water-absorbing polymer particles by optical microscope observation using the water-absorbing polymer particles before use. The diameter here refers to the case where the water-absorbing polymer particles are spherical. The long axis refers to a case in which the water-absorbing polymer particles have an irregular shape such as a rhombus, rectangle, tuft, or football. The diameter or major axis of a total of 50 water-absorbing polymer particles is measured, and the number average particle diameter is defined as the average particle diameter of the water-absorbing polymer particles in a state before use.

<Measuring method of average particle diameter of water-absorbing polymer particles after swelling>
The average particle diameter in the state after swelling is such that the sheet 1 is immersed in a physiological saline (0.9% by mass sodium chloride aqueous solution) adjusted to 25 ° C., and the sheet 1 is 1 hour after the start of immersion. After taking out from the physiological saline, hanging in a vertical state for 30 minutes and draining, the diameter or major axis of the water-absorbing polymer particles on the surface of the elongated substrate portion 2 can be measured by observation with an optical microscope. The diameter here refers to the case where the water-absorbing polymer particles are spherical. The long axis refers to a case in which the water-absorbing polymer particles have an irregular shape such as a rhombus, rectangle, tuft, or football. The diameter or major axis of a total of 50 water-absorbing polymer particles is measured, and the number average particle diameter is defined as the average particle diameter of the water-absorbing polymer particles in the swollen state.

  Next, a preferred embodiment of the method for producing a sheet-like material according to the present invention will be described with reference to FIG. FIG. 4 shows a manufacturing apparatus 100 that is preferably used in the manufacturing method of this embodiment. The manufacturing apparatus 100 of the present embodiment includes an adhesive application unit 120, a water absorbent polymer spraying unit 130, and a base sheet cut unit 110 in this order from the upstream side to the downstream side of the manufacturing process. In the manufacturing apparatus 100 shown in FIG. 4, an apparatus in which the adhesive application unit 120 and the water absorbent polymer spraying unit 130 are integrated is used. However, the adhesive application unit 120 and the water absorbent polymer spraying unit 130 are integrated. It does not have to be. The integrated device has a configuration in which an adhesive application unit 120 is disposed on the upstream side of the device, and a water-absorbing polymer spraying unit 130 is disposed on the downstream side of the integrated device. In the manufacturing apparatus 100 of this embodiment, the conveyance direction (Y1 direction) of the strip-shaped base material sheet 20 which forms the elongate base | substrate part 2 respond | corresponds to the vertical direction (Y direction) of the sheet-like article 1 manufactured. The direction (X1 direction) orthogonal to the conveyance direction (Y1 direction) of the belt-shaped base sheet 20 corresponds to the lateral direction (X direction) of the sheet-like object 1 to be manufactured.

  The adhesive application part 120 is a part that applies the adhesive 5 to the surface of one surface (upper surface) of the belt-like base sheet 20 that forms the long base part 2, and in the manufacturing apparatus 100, FIG. As shown in FIG. For the coating head 121, various known coating devices can be used without particular limitation. The coating head 121 is formed to have a length corresponding to the width (the length in the horizontal direction (X direction)) of the absorption region AT of the sheet-like object 1 in the X1 direction. The coating heads 121 formed in this way are arranged on one surface (upper surface) of the base sheet 20 with a space therebetween.

  The water-absorbing polymer spraying unit 130 located on the downstream side of the adhesive application unit 120 is a part that sprays the water-absorbing polymer particles 3 on the surface of one surface (upper surface) of the base sheet 20. Is a part in which the water-absorbing polymer particles 3 are dispersed and the water-absorbing polymer particles 3 are fixed to the surface of one surface (upper surface) of the base sheet 20 via the adhesive 5. As shown in FIG. 4, the water-absorbing polymer spraying unit 130 includes a water-absorbing polymer introduction unit 131 in the manufacturing apparatus 100. For the water-absorbing polymer introduction part 131, various known introduction devices can be used without particular limitation. The water-absorbing polymer introduction part 131 is formed to have a length corresponding to the width (the length in the horizontal direction (X direction)) of the absorption region AT of the sheet-like material 1 in the X1 direction. The water-absorbing polymer introduction part 131 formed in this way is disposed on one surface (upper surface) of the long base part 2 with a gap.

  The base sheet cut section 110 located on the downstream side of the water-absorbing polymer spraying section 130 cuts the base sheet 20 having the water-absorbing polymer particles 3 fixed on one surface (upper surface) to form a plurality of long sheets. It is a part which forms the absorptive base part 2 while forming the absorbent unit 4. Various known cutting devices can be used for cutting the base sheet 20 without any particular limitation. However, in the manufacturing device 100, as shown in FIG. 5, a plurality of cutter blades 111a, 111a, 111a,. A cutting device 113 including a rotary die 111b in which a... Is disposed and a receiving roll 112 having a flat peripheral surface disposed opposite to the rotary die 111b is used. The cutter blades 111a of the cutting device 113 are arranged in the rotation direction of the rotary die 111b, and the plurality of cutter blades 111a, 111a, 111a,. ) Are arranged side by side in a direction orthogonal to (X1 direction). The interval between the cutter blades 111a, 111a adjacent to each other in the orthogonal direction (X1 direction) corresponds to the width (length in the horizontal direction (X direction)) of each long base portion 2 to be formed. The base sheet 20 may be cut using a shear-cut type cutting device that rubs and cuts the side surfaces of the upper blade and the lower blade, and a plurality of score cut knives are orthogonally crossed (X1 direction). A juxtaposed apparatus may be used, or a laser apparatus that melts by irradiation with laser light may be used.

  When the sheet-like object 1 includes the non-slit regions NT at both ends in the longitudinal direction (Y direction) like the sheet-like object 1 shown in FIG. 3, for example, as shown in FIG. The recess 114 may be formed on the peripheral surface of the cutter blade 111a. The length of the arc of the concave portion 114 at the outer periphery of the rotating cutter blade 111a is the sum of the lengths in the vertical direction (Y direction) of the non-slit regions NT arranged at both ends of the sheet-like object 1 shown in FIG. Try to accommodate equal lengths. If a plurality of cutter blades 111a, 111a, 111a... Having such a recess 114 are prepared and a rotary die 111b is used in which the positions of the recesses 114, 114 of the cutter blades 111a adjacent to each other in the X1 direction are aligned. Good. In addition, the length of the circular arc of the part except the recessed part 114 in the outer periphery of the cutter blade 111a to rotate is the longitudinal direction (Y direction) of the elongate base | substrate part 2 and the absorptive unit 4 which the sheet-like thing 1 shown in FIG. 3 has. Corresponds to the length of Moreover, when the sheet-like object 1 is provided with the non-slit area | region NT in the both sides along a vertical direction (Y direction), if it is made not to distribute the cutter blade 111a in the position corresponding to this non-slit area | region NT. Good.

  Further, in the manufacturing apparatus 100 shown in FIG. 4, a vacuum conveyor is provided at a position facing the apparatus in which the adhesive application unit 120 and the water-absorbing polymer spraying unit 130 are integrated, on the lower surface side of the substrate sheet 20 to be conveyed. 141 is arranged. The vacuum conveyor 141 includes an endless breathable belt 144 laid across a drive roll 142 and a plurality of driven rolls 143, and a vacuum box disposed at a position facing the integrated device with the breathable belt 144 interposed therebetween. 145. On the vacuum conveyor 141, the base material sheet 20 is introduced.

  Moreover, in the manufacturing apparatus 100 shown in FIG. 4, the drive roll 151 which pays out the base material sheet 20 from the raw fabric roll of the strip | belt-shaped base material sheet 20, and the precursor 1b of the manufactured sheet-like thing 1b most downstream. And a drive roll 152 for conveying the above.

Next, an embodiment of a method for continuously manufacturing the sheet-like material 1 using the manufacturing apparatus 100 of the above-described embodiment, that is, a method for manufacturing the sheet-like material of the present invention will be described.
The manufacturing method of the sheet-like product 1 of the present embodiment includes a water-absorbing polymer particle spraying step of spraying the water-absorbing polymer particles 3 on the surface of one surface of the belt-shaped base sheet 20, and the water-absorbing polymer particles 3. And a cutting step of forming a plurality of absorbent units 4 by cutting the base material sheet 20 on which is dispersed. Moreover, in this embodiment, before the particle | grains of the water absorbing polymer 3 are spread | dispersed by the particle | grain spreading | diffusion process of a water absorbing polymer, the adhesive agent which apply | coats the adhesive agent 5 to the surface of one surface of the strip | belt-shaped base material sheet 20 An application process is provided. That is, the manufacturing method of the sheet-like product 1 of this embodiment includes an adhesive application step, a water-absorbing polymer particle spraying step, and a cutting step in this order.

  Prior to performing the adhesive application step, first, the vacuum box 145 is made negative by operating an exhaust device connected thereto.

  Next, the drive roll 151 and the drive roll 152 are driven, the cutting device 113 and the breathable belt 144 are rotated, and the vacuum conveyor 141 is operated. And the base material sheet 20 is drawn | fed out from the original fabric roll of the strip | belt-shaped base material sheet 20 with the drive roll 151, and the adhesive agent 5 is apply | coated to the surface of one side (upper surface) of the base material sheet 20 (adhesive application | coating process). . In this embodiment, the base sheet 20 fed by the drive roll 151 is conveyed by the vacuum conveyor 141 while being positioned on the vacuum box 145 by the coating head 121 of the adhesive coating unit 120. The adhesive 5 is intermittently applied to the surface of one surface (upper surface) of 20 except for a non-cut portion NTb described later.

  Next, the water-absorbing polymer particles 3 are dispersed on the adhesive 5 applied to the surface of one surface (upper surface) of the base sheet 20 in the adhesive application step, and the water-absorbing polymer is passed through the adhesive 5. The particles 3 are fixed to the base sheet 20 (water-absorbing polymer particle spraying step). In this embodiment, the substrate sheet 20 coated with the adhesive 5 on the surface of one surface (upper surface) formed in the adhesive coating step is conveyed on the vacuum box 145 while being transported by the vacuum conveyor 141. In the meantime, on the adhesive 5 applied to the surface of one surface (upper surface) of the base sheet 20 by the water-absorbing polymer introduction portion 131 of the water-absorbing polymer spraying portion 130, a non-cut portion NTb described later is removed. Then, the particles 3 of the water-absorbing polymer are sprayed intermittently. By spraying the water-absorbing polymer particles 3 in this way, the water-absorbing polymer particles 3 are fixed to the surface of one surface (upper surface) of the elongated base portion 2 via the adhesive 5. .

  Next, the base sheet 20 on which the water-absorbing polymer particles 3 are fixed is cut, and a plurality of the absorptive units 4 in which the water-absorbing polymer particles 3 are fixed to the long base portion 2 via the adhesive 3 are provided. This is formed (cut process). In the present embodiment, the substrate sheet 20 on which the water-absorbing polymer particles 3 are fixed is conveyed by the vacuum conveyor 141, and a plurality of cutters in the cutting device 113 of the substrate sheet cutting unit 110 as shown in FIG. It supplies between the blade 111a and the receiving roll 112, cuts the base material sheet 20, forms the elongate base | substrate part 2, and forms the multiple absorptive units 4. As shown in FIG. In this embodiment, the plurality of cutter blades 111a arranged in the rotation direction of the rotary die 111b are arranged side by side in a direction (X1 direction) orthogonal to the conveyance direction (Y1 direction) of the belt-shaped base sheet 20 respectively. Therefore, the strip-shaped base material sheet 20 is cut along the conveyance direction (Y1 direction) of the base material sheet 20, and is cut at a plurality of locations in the orthogonal direction (X1 direction) to form a plurality of elongated shapes. The base portion 2 and the absorbent unit 4 are formed. Further, the portion cut by the cutter blade 111 a becomes the side edge portion 2 s of the long base portion 2.

  Moreover, in this embodiment, since the some cutter blade 111a has the recessed part 114, respectively, the longitudinal direction (Y direction) of the elongate base | substrate part 2 is conveyed to the strip | belt-shaped base material sheet 20 conveyed. The non-cut portion NTb corresponding to twice the length in the longitudinal direction (Y direction) of the non-slit region NT is intermittently formed. The plurality of long base portions 2 and the absorptive units 4 formed in the cutting process are formed in parallel to the transport direction (Y1 direction), and are juxtaposed in the orthogonal direction (X1 direction). ing.

  In this embodiment, as described above, after forming the base sheet 20 to which the water-absorbing polymer particles 3 are first fixed, the base sheet 20 to which the water-absorbing polymer particles 3 are fixed is cut. Therefore, the water-absorbing polymer particles 3 are arranged inside the side edges 2s and 2s along the longitudinal direction (Y direction) of the elongated base 2. The plurality of absorbent units 4 formed in this way are arranged so that the respective longitudinal directions (Y direction) face the transport direction (Y1 direction), and form the precursor 1b of the sheet-like material 1 To come.

  Next, the precursor 1b of the sheet-like material 1 is conveyed downstream by the drive roll 152, and the length of the non-cut portion NTb in the conveying direction (Y1 direction) is secondarily determined using a known cutting device (not shown). It cut | disconnects for every position of a minute, and the sheet-like article 1 which has the non-slit area | region NT in the both ends of a vertical direction (Y direction) is manufactured continuously. Thus, according to the manufacturing apparatus 100 of this embodiment and the manufacturing method of this embodiment using the same, the sheet-like object 1 can be manufactured stably and efficiently.

  Moreover, according to the manufacturing method of this embodiment, the base material sheet 20 on which the water-absorbing polymer particles 3 are fixed is cut into a uniform width using a plurality of cutter blades 111a, 111a, 111a. Since the plurality of long base portions 2 and the absorptive unit 4 are formed, in the manufactured sheet-like object 1, the long base portion 2 of the absorptive unit adjacent in the lateral direction (X direction). , 2 are easily adjacent to each other. Such a sheet-like material 1 can be manufactured stably and efficiently.

  Next, another embodiment of the sheet-like material of the present invention will be described. Regarding the points that are not particularly described with respect to the other embodiments, the description of the above-described embodiments is appropriately applied. Moreover, in the sheet-like object 1 shown in FIGS. 6-7 and FIGS. 9-10, the same code | symbol is attached | subjected to the same member as the sheet-like object 1 shown in FIG.1 and FIG.3.

  The sheet-like material 1 shown in FIG. 6 is in a state before use, and water-absorbing polymer particles 3 are fixed to the surface of one surface (upper surface) of the long base portion 2 via an adhesive 5. The adhesive 5 is further arranged on the water-absorbing polymer particles 3.

  For example, in the manufacturing apparatus 100 shown in FIG. 4, the sheet-like material 1 shown in FIG. 6 is provided with another adhesive application unit 120 on the downstream side of the water-absorbing polymer spraying unit 130, It can manufacture by apply | coating the adhesive agent 5 on the particle | grains 3 of a water absorbing polymer using another adhesive application part 120 after dispersion | spreading.

  According to the sheet-like material 1 shown in FIG. 6, it is possible to suppress the scattering and dropping of the water-absorbing polymer particles 3 being conveyed, and to achieve an effect of having a stable absorption performance.

  The sheet-like material 1 shown in FIG. 7 is in a state before use, and water-absorbing polymer particles 3 are fixed to the surface of one surface (upper surface) of the long base portion 2 via an adhesive 5. The adhesive 5 is further disposed on the water-absorbing polymer particles 3, and the elongated base portion 2 is further disposed on the adhesive 5. That is, in the sheet-like material 1 shown in FIG. 7, the water-absorbing polymer particles 3 are sandwiched between the long base portions 2 in which the adhesive 5 is disposed on one surface, and the water-absorbing polymer particles 3 are fixed. It is a form.

  The sheet-like object 1 shown in FIG. 7 is orthogonal, for example, after applying the adhesive 5 to the surface of one surface (upper surface) of the belt-like base material sheet 20 using the manufacturing apparatus 100 shown in FIG. For example, the water-absorbing polymer particles 3 are sprayed only on the adhesive 5 applied to the surface of one surface (upper surface) of the base sheet 20 located on the right side of the bisected position in the direction (X1 direction). Then, the base material sheet 20 on which the adhesive 5 is applied to the surface of one surface (upper surface) located on the left side of the bisecting position in the orthogonal direction (X1 direction) is used with a known folded plate. Then, it is folded back onto the water-absorbing polymer particles 3 located on the right side to form a laminate. Finally, the laminate 1 is supplied to the cutting device 113 and cut, whereby the sheet 1 shown in FIG. 7 can be manufactured.

  The sheet-like object 1 shown in FIG. 7 can be manufactured using, for example, the manufacturing apparatus 100B shown in FIG. The manufacturing apparatus 100 </ b> B includes not only the first adhesive application unit 120 </ b> A on the upstream side of the water absorbent polymer spray unit 130, but also the second adhesive application unit 120 </ b> B on the downstream side of the water absorbent polymer spray unit 130. Moreover, the conveyance apparatus 114 which conveys another strip | belt-shaped 2nd base material sheet 20 which forms the elongate base | substrate part 2 of the upper surface side of the sheet-like article 1 shown in FIG.

  The manufacturing method of the sheet-like product 1 shown in FIG. 7 using the manufacturing apparatus 100B shown in FIG. 8 will be described. First, one belt-like substrate sheet 20 is conveyed, and one surface (upper surface) of the substrate sheet 20 is conveyed. The adhesive 5 is applied to the surface of Thereafter, water-absorbing polymer particles 3 are dispersed on the adhesive 5 applied to the surface of one surface (upper surface) of one substrate sheet 20, and one surface (upper surface) of the dispersed water-absorbing polymer particles 3 is dispersed. The adhesive 5 is further applied to the surface of the surface by the second adhesive application part 120B. Separately, the other belt-shaped second base sheet 20 is transported by the transport device 114 and applied to the water-absorbing polymer particles 3 spread on the surface of one surface (upper surface) of the one base sheet 20. On the adhesive 5 thus formed, the other second base sheet 20 is arranged to form a laminate. Thereafter, the laminate is supplied to the cutting device 113 and cut, whereby the sheet-like product 1 shown in FIG. 7 can be manufactured.

  According to the sheet-like material 1 shown in FIG. 7, it is possible to achieve an effect of suppressing scattering and dropping of the water-absorbing polymer particles 3 being conveyed.

  The sheet-like material 1 shown in FIG. 9 is in a state before use, and water-absorbing polymer particles 3 are fixed to the surface of one surface (upper surface) of the long base portion 2 via an adhesive 5. Further, the adhesive 5 is disposed on the water-absorbing polymer particles 3, and the elongated base portion 2 is further disposed on the adhesive 5, which is similar to the form of the sheet 1 shown in FIG. 7. is doing. That is, the sheet-like material 1 shown in FIG. 9 wraps the water-absorbing polymer particles 3 with a plurality of long base portions 2 each having an adhesive 5 disposed on the surface of one surface, and the water-absorbing polymer particles 3. Is a fixed form.

  The sheet-like object 1 shown in FIG. 9 is, for example, orthogonal after the adhesive 5 is applied to the surface of one surface (upper surface) of the entire belt-like substrate sheet 20 using the manufacturing apparatus 100 shown in FIG. Absorbs water only on the adhesive 5 applied to the surface of one surface (upper surface) of the portion of the base sheet 20 located on the right side from the position spaced from the bisected position to the right side in the direction (X1 direction) The particles 3 of the functional polymer are sprayed. Thereafter, the part of the remaining base sheet 20 in which the water-absorbing polymer particles 3 are not dispersed and the adhesive 5 is applied to the surface of one surface (upper surface) is used using a known folded plate, The laminate is formed by folding back onto the portion of the base sheet 20 to which the particles of the water-absorbing polymer 3 are fixed, and further folding back so as to wrap the particles 3 of the water-absorbing polymer. Then, the sheet-like article 1 shown in FIG. 9 can be manufactured by supplying the laminate to the cutting device 113 and cutting it.

  According to the sheet-like material 1 shown in FIG. 9, it is possible to achieve an effect of suppressing scattering and dropping of the water-absorbing polymer particles 3 being conveyed.

  The sheet-like material 1 shown in FIG. 10 is in a state before use, and the water-absorbing polymer particles 3 are fixed to the surface of one surface (upper surface) of the long base portion 2 via an adhesive 5. The second elongated base portion 2 is further disposed on the water-absorbing polymer particles 3.

  For example, the sheet-like object 1 shown in FIG. 10 is located, for example, on the right side of the belt-like base material sheet 20 in the orthogonal direction (X1 direction) in the perpendicular direction (X1 direction) using the manufacturing apparatus 100 shown in FIG. The adhesive 5 is applied only to the surface of one surface (upper surface) of the portion of the base sheet 20, and the water-absorbing polymer particles 3 are dispersed only on the applied adhesive 5. Then, the part of the remaining base material sheet 20 where the adhesive 5 is not applied to the surface of one surface (upper surface), which is located on the left side of the bisecting position in the orthogonal direction (X1 direction), is publicly known. The folded plate is used to fold back onto the water-absorbing polymer particles 3 located on the right side to form a laminate. Then, the sheet-like article 1 shown in FIG. 10 can be manufactured by supplying the laminate to the cutting device 113 and cutting it.

  According to the sheet-like material 1 shown in FIG. 10, it is possible to achieve an effect of suppressing scattering and dropping of the water-absorbing polymer particles 3 being conveyed.

The present invention is not limited to the above embodiment and the above embodiment, and can be modified as appropriate.
In the sheet-like material 1 shown in FIGS. 1, 6 to 7, and 9 to 10, the water-absorbing polymer particles 3 are formed on the surface of one surface (upper surface) of each long base portion 2. However, not only on the surface of one surface (upper surface) of each long base portion 2 but also on the surface of the other surface (lower surface) from the viewpoint of improving the liquid absorption performance of the sheet-like material 1. May also be fixed. In order to fix the water-absorbing polymer particles 3 on both surfaces (upper and lower surfaces) of each long base portion 2, for example, one surface of each long base portion 2 is used by using the manufacturing apparatus 100 shown in FIG. After fixing the water-absorbing polymer particles 3 on the (upper surface) surface, the water-absorbing polymer particles 3 are reversed through a reversing roll, and then the other surface of each elongated substrate portion 2 using another water-absorbing polymer spraying portion 130. It can be produced by dispersing and fixing the water-absorbing polymer particles 3 on the surface of the (lower surface).

When the water-absorbing polymer particles 3 are fixed to both surfaces (upper and lower surfaces) of each elongated substrate portion 2, the surface of the other surface (lower surface) of the elongated substrate portion 2 from the viewpoint of further achieving the above effect. It is preferable that the basis weight of the water-absorbing polymer 3 fixed to is larger than the basis weight of the water-absorbing polymer 3 fixed to the surface of one surface (upper surface) of the elongated base portion 2. The basis weight of the water-absorbing polymer 3 to be fixed to the surface of one surface (upper surface) of the elongated base portion 2 is preferably 10 g / m ² or more and 250 g / m ² or less, and 30 g / m ² or more and 150 g / m ^2. More preferably, it is m ² or less. The basis weight of the water-absorbing polymer 3 to be fixed to the surface of the other surface (lower surface) of the long base portion 2 is preferably 30 g / m ² or more and 400 g / m ² or less, and 50 g / m ² or more and 300 g / m ^2. More preferably, it is m ² or less.

  In addition, when fixing the water-absorbing polymer particles 3 on both surfaces (upper and lower surfaces) of each elongated base portion 2, a large amount of liquid is held on the non-skin facing surface (lower surface) far from the wearer's skin, From the viewpoint of improving the touch without leaving a liquid on the skin-facing surface (upper surface), the water-absorbing polymer 3 fixed to the surface of one surface (upper surface) of the elongate base portion 2 is the long base. Compared to the water-absorbing polymer 3 fixed to the surface of the other surface (lower surface) of the part 2, it is preferable that the liquid passing performance under pressure is high and the centrifugal retention amount is low. From the above viewpoint, with respect to the water-absorbing polymer 3 fixed to the surface of one surface (upper surface) of the long base portion 2, the liquid passing rate under pressure at 2.0 kPa is preferably 20 ml / min or more. 40 ml / min or more, more preferably 1000 ml / min or less, further preferably 800 ml / min or less, specifically 20 ml / min or more and 1000 ml / min or less. It is preferably 40 ml / min or more and 800 ml / min or less. In addition, with respect to the water-absorbing polymer 3 fixed to the surface of the other surface (lower surface) of the long base portion 2, the liquid flow rate under pressure at 2.0 kPa is preferably 0 ml / min or more, preferably 10 ml. / Min or more, more preferably 400 ml / min or less, further preferably 200 ml / min or less, and specifically 0 ml / min or more and 400 ml / min or less. It is preferably 10 ml / min or more and 200 ml / min or less. The liquid passing speed under pressure is determined by the following measuring method.

<Measurement method of liquid flow rate under pressure>
The liquid passing rate under pressure is measured using a measuring method and a measuring apparatus described in JP-A-2003-235889. That is, in a 100 mL glass beaker, a sufficient amount of physiological saline (0.9% by mass sodium chloride aqueous solution) to swell the measurement sample water-absorbing polymer 0.32 ± 0.005 g, for example, water-absorbing polymer saturation. Immerse in physiological saline more than 5 times the amount of absorption and leave for 30 minutes. Separately, at the lower end of an opening of a vertically standing cylinder (inner diameter 25.4 mm), a wire mesh (mesh opening 150 μm, biocolumn sintered stainless steel filter 30SUS sold by Sansho Co., Ltd.) and a capillary (with an inner diameter of 2 mm) ( A filtration cylindrical tube having an inner diameter of 4 mm and a length of 8 cm) is prepared, and the contents of the beaker including the swollen measurement sample are put into the cylindrical tube with the cock closed. Next, a cylindrical rod having a diameter of 2 mm with a wire mesh having an opening of 150 μm and a diameter of 25 mm is inserted into the filtration cylindrical tube so that the wire mesh and the measurement sample are in contact with each other. Put a weight so that the load of. After standing for 1 minute in this state, the cock is opened to flow the liquid, and the time until the liquid level in the filtration cylindrical tube reaches the 40 mL scale line from the 60 mL scale line (that is, 20 mL of liquid passes) (T1). (Seconds) is measured. Using the measured time T1 (seconds), the liquid flow rate under pressure at 2.0 kPa is calculated from the following equation. In the formula, T0 (seconds) is a value obtained by measuring the time required for 20 ml of physiological saline to pass through the wire mesh without putting the measurement sample in the filtering cylindrical tube.
Flow rate under pressure (ml / min) = 20 × 60 / (T1-T0)
The measurement is performed 5 times (n = 5), the values at each of the upper and lower points are deleted, and the average value of the remaining three points is taken as the measured value. Further, the measurement is performed at 23 ± 2 ° C. and humidity 50 ± 5%, and the sample is measured after being stored in the same environment for 24 hours or more. A more detailed method for measuring the flow rate under pressure is described in paragraphs [0008] and [0009] of Japanese Patent Application Laid-Open No. 2003-235889, and the measuring apparatus is shown in FIGS. Are listed.

  From the above viewpoint, with respect to the water-absorbing polymer 3 fixed to the surface of one surface (upper surface) of the elongated base portion 2, the centrifugal retention amount (water absorption amount) is preferably 20 g / g or more, and 25 g / G or more, more preferably 50 g / g or less, even more preferably 45 g / g or less, and specifically 20 g / g or more and 50 g / g or less. Preferably, it is more preferably 25 g / g or more and 45 g / g or less. Further, regarding the water-absorbing polymer 3 fixed to the surface of the other surface (lower surface) of the elongated base portion 2, the centrifugal retention amount (water absorption amount) is preferably 25 g / g or more, and 30 g / g. More preferably, it is preferably 65 g / g or less, more preferably 55 g / g or less, specifically 25 g / g or more and 65 g / g or less, More preferably, it is 30 g / g or more and 55 g / g or less. The centrifugal retention amount (water absorption amount) is determined by the following measurement method.

<Measuring method of centrifugal retention (water absorption)>
The centrifugal retention amount (water absorption amount) is measured according to JIS K 7223 (1996). Nylon woven fabric (sold by Sanriki Seisakusho, product name: nylon net, standard: 250 mesh) is cut into a rectangle with a width of 10 cm and a length of 40 cm, folded in half at the center in the longitudinal direction, and heat sealed at both ends to a width of 10 cm A nylon bag having an inner dimension of 9 cm and a length of 20 cm is prepared. Next, 1.00 g of the water-absorbing polymer as a measurement sample is precisely weighed and placed uniformly at the bottom of the produced nylon bag. Next, the nylon bag containing the sample is immersed in physiological saline (0.9 mass% sodium chloride aqueous solution) adjusted to 25 ° C. After 1 hour from the start of immersion, the nylon bag is taken out from the physiological saline, suspended in a vertical state for 1 hour and drained, and then dehydrated using a centrifugal dehydrator (Kokusan Co., Ltd., model H-130C special model). The dehydration condition is 143 G (800 rpm) for 10 minutes. After dehydration, the mass of the sample is measured, and the target centrifugal retention amount (water absorption amount) is calculated according to the following formula.
Centrifugal retention amount (g / g) = (a′−b−c) / c
In the formula, a ′ is the total mass (g) of the sample and nylon bag after centrifugal dehydration, b is the mass (g) of the nylon bag before water absorption (during drying), and c is the mass of the sample before water absorption (during drying). (G) is represented.
The measurement is performed 5 times (n = 5), the values at each of the upper and lower points are deleted, and the average value of the remaining three points is taken as the measured value. Further, the measurement is performed at 23 ± 2 ° C. and humidity 50 ± 5%, and the sample is measured after being stored in the same environment for 24 hours or more.

  Moreover, although the sheet-like material 1 shown in FIG. 1 described above is formed by using a plurality of absorbent units 4 each having a long base portion 2 having a uniform width, the width of the long base portion 2 is as follows. It may be non-uniform. Preferably, in a plan view of the sheet-like material 1, the water-absorbing polymer particles 3 are unevenly distributed and fixed, and the portion having a relatively large basis weight of the fixed water-absorbing polymer 3 has a long shape. The distance between the side edge portions 2s and 2s along the longitudinal direction (Y direction) of the base portion 2 may be relatively short. That is, comparing the portion with a large basis weight of the fixed water-absorbing polymer 3 with a portion with a small basis weight, the portion between the side edges 2s, 2s of the long base portion 2 in the portion with a large basis weight of the fixed water-absorbing polymer 3 This distance may be shorter than the distance between the side edges 2s, 2s of the long base portion 2 in the portion where the basis weight of the fixed water-absorbing polymer 3 is small. In the case of the sheet-like material 1 having the above-described configuration, adjacent absorbent units 4 and 4 are easily movable in the thickness direction (Z direction) in a portion where the basis weight of the fixed water-absorbing polymer 3 is large, Since the sheet-like material 1 is hard to become hard and the absorption performance of the water-absorbing polymer particles 3 can be maximized, the absorption performance of the sheet-like material 1 is easily improved.

  Further, the sheet-like object 1 shown in FIG. 3 described above is formed by arranging so that the longitudinal direction (Y direction) of each of the plurality of absorbent units 4 faces the longitudinal direction (Y direction) of the sheet-like object 1. However, as shown in FIG. 11, for example, the plurality of absorbent units 4 are arranged so that the longitudinal direction (Y direction) faces the lateral direction (X direction) of the sheet 1. Also good. In addition, the sheet-like object 1 shown in FIG. 11 is provided with the non-slit area | region NT in the both sides along a vertical direction (Y direction). When manufacturing the sheet-like object 1 shown in FIG. 11, a rotary die in which cutter blades arranged parallel to the axial direction of the roll are intermittently arranged in the circumferential direction and a receiving roll are used. It can form by supplying the base material sheet 20 between this and this receiving roll.

  Moreover, the sheet-like object 1 formed so that the vertical direction (Y direction) of each absorptive unit 4 may face a plurality of directions may be used. As the sheet-like material 1 formed so as to face the plurality of directions, for example, the longitudinal direction (Y direction) of each of the plurality of absorbent units 4 is the longitudinal direction (Y direction) of the sheet-like material 1. There are regions formed so as to face each other on both sides along the longitudinal direction (Y direction) of the sheet-like material 1, and the longitudinal direction (Y direction) of each of the plurality of absorbent units 4 is a sheet shape. The form etc. which have the area | region formed by arranging so that it may face the horizontal direction (X direction) of the thing 1 in the center part pinched | interposed by the said both sides are mentioned. The sheet-like object 1 formed so as to be oriented in such a plurality of directions, for example, using a plurality of cutter blades 111a and receiving rolls 112, the conveyance direction (Y1 direction) of the substrate sheet 20 that is conveyed. ) Are cut at a plurality of positions on both sides, and then the central portion in the orthogonal direction (X1 direction) of the substrate sheet 20 to be conveyed using a cut roll and a receiving roll intermittently arranged in the circumferential direction. Can be formed by cutting a plurality of locations.

  Further, in the sheet-like material 1 shown in FIG. 1 described above, each absorbent unit 4 and each long base portion 2 extend linearly in parallel to the vertical direction (Y direction). It only needs to extend in the direction (Y direction). For example, each absorptive unit 4 and each long base part 2 may extend by repeating an S shape in the vertical direction (Y direction), or may extend in a jagged shape in the vertical direction (Y direction). Good.

  Moreover, in the manufacturing method of the sheet-like object 1 of this embodiment mentioned above, although the water-absorbing polymer dispersion | distribution process is provided in the post process of an adhesive agent coating process, the cut process is provided in the post-process of a water-absorption polymer dispersion process. In the case of raising the surface of one surface of the substrate sheet 20, a raising process may be provided instead of the adhesive application process. What is necessary is just to prepare such a raising process process in the pre-process of a water-absorbing polymer spraying process. Examples of the method of performing the raising process include the method described in JP2012-092476A, the method described in JP2013-028891A, and the like.

  The following sheet-like material is further disclosed regarding the embodiment described above.

<1>
A long base portion having a horizontal direction, a longitudinal direction longer than the horizontal direction, and a thickness direction, and particles of a water-absorbing polymer fixed to the surface of one surface of the long base portion A plurality of absorptive units, each of the absorptive units being arranged so that its longitudinal direction is oriented in at least one direction,
Before the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles are arranged inside both side edges along the longitudinal direction of the elongated base portion,
When the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles swell beyond the side edge of the elongated substrate portion, and the position of the elongated substrate portion is the thickness. A sheet-like material that is different from the position before absorbing the liquid in the direction.

<2>
Before the water-absorbing polymer particles absorb the liquid, the adjacent long base portions are at least partially adjacent to each other, according to <1>.
<3>
The sheet-like material according to <1> or <2>, in which the adjacent long base portions are adjacent to each other before the water-absorbing polymer particles absorb the liquid.
<4>
The sheet according to any one of <1> to <3>, wherein the sheet-like object includes a non-slit region in which the long base portion is connected in the lateral direction at both ends in the longitudinal direction. State.
<5>
The sheet-like material includes a non-slit region in which the long base portion is connected in the lateral direction at both ends in the vertical direction, and the water-absorbing polymer particles are arranged in the non-slit region. The sheet-like material according to any one of the above items <1> to <4>.

<6>
The sheet-like material according to any one of <1> to <5>, wherein both ends in the longitudinal direction are fixed to the absorbent article.
<7>
In the elongated base portion, a distance between both side edges along the longitudinal direction is larger than an average particle diameter in a state before the water-absorbing polymer particles absorb the liquid, and the water-absorbing polymer particles are The sheet-like material according to any one of <1> to <6>, which is smaller than an average particle diameter in a swollen state by absorbing the liquid.
<8>
The sheet-like material according to any one of <1> to <7>, wherein the long base portion is hydrophilic.
<9>
The sheet-like material according to any one of <1> to <8>, wherein the long base portion is a nonwoven fabric.
<10>
When the sheet-like material is viewed in plan, the water-absorbing polymer particles are unevenly distributed and fixed, and in the portion where the basis weight of the fixed water-absorbing polymer is relatively large, The sheet-like object according to any one of <1> to <9>, wherein a distance between both side edges along the vertical direction is relatively short.

<11>
Any of <1> to <10>, wherein the water-absorbing polymer particles are fixed to the surface of the other surface of the elongated base portion before the water-absorbing polymer particles absorb the liquid. The sheet-like material according to 1.
<12>
The basis weight of the water-absorbing polymer fixed on the surface of the other surface of the elongated substrate portion is the basis weight of the water-absorbing polymer fixed on the surface of one surface of the elongated substrate portion. The sheet-like material according to <11>, which is larger than the above.
<13>
The water-absorbing polymer fixed to the surface of one surface of the long base portion is liquid-removed under pressure compared to the water-absorbing polymer fixed to the surface of the other surface of the long base portion. The sheet-like material according to <11> or <12>, which has high performance and low centrifugal retention.
<14>
The water-absorbing polymer particles are the sheet-like material according to any one of <1> to <13>, which are fixed to the long base portion via an adhesive.
<15>
The sheet-like material according to any one of <1> to <14>, wherein inclusions are absent between the absorbent units adjacent in the lateral direction.
<16>
The said absorptive unit is a sheet-like object in any one of said <1>-<15> arranged in multiple numbers so that the vertical direction may face the vertical direction of the said sheet-like object.

<17>
The number of the absorbent units is 3 or more, preferably 50 or more, and 1000 or less, preferably 500 or less, and more specifically 3 or less per sheet. The sheet-like material according to <16>, in which the number is from 1,000 to 1,000, preferably from 50 to 500.
<18>
A plurality of the absorptive units are arranged such that the longitudinal direction thereof faces the lateral direction of the sheet-like material,
The number of the absorbent units is 3 or more, preferably 50 or more, and 3500 or less, preferably 2000 or less, and specifically 3 or less per sheet. The sheet-like material according to any one of <1> to <15>, wherein the number is from 3 to 3,500, preferably from 50 to 2000.
<19>
The sheet-like material according to any one of <1> to <18>, wherein the length in the vertical direction is 100 mm or more and 1000 mm or less, and the length in the horizontal direction is 50 mm or more and 300 mm or less. Sheet material.
<20>
The ratio of the width of the long base portion to the width of the sheet-like material is 0.001 or more, preferably 0.002 or more, and is 0.2 or less, preferably 0.04 or less. Specifically, the sheet-like material according to any one of <1> to <19>, which is 0.001 to 0.2, preferably 0.002 to 0.04.
<21>
The width of the long base portion is 0.3 mm or more, preferably 0.6 mm or more, and 10 mm or less, preferably 2 mm or less, more preferably 1.8 mm or less. The sheet-like material according to any one of <1> to <20>, which is from 3 mm to 10 mm, preferably from 0.6 mm to 2 mm, more preferably from 0.6 mm to 1.8 mm.
<22>
A long base portion is further disposed on the water-absorbing polymer particles, and the water-absorbing polymer particles are sandwiched and fixed between the two upper and lower long base portions. >-<21> The sheet-like object in any one of <21>.

<23>
The absorber for absorbent articles which has a sheet-like material in any one of said <1>-<22>, and a liquid-permeable core wrap sheet which coat | covers this sheet-like material.

<24>
The absorbent article which has an absorber as described in said <23>, the surface sheet distribute | arranged to the skin opposing surface side of this absorber, and the back surface sheet distribute | arranged to the non-skin opposing surface side of this absorber.

<25>
A long base portion having a horizontal direction, a longitudinal direction longer than the horizontal direction, and a thickness direction, and particles of a water-absorbing polymer fixed to the surface of one surface of the long base portion A plurality of absorptive units provided with each of the absorptive units, the absorptive units being arranged so that the longitudinal direction thereof faces at least one direction,
Before the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles are arranged inside both side edges along the longitudinal direction of the elongated base portion,
When the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles swell beyond the side edge of the elongated substrate portion, and the position of the elongated substrate portion is the thickness. In the direction, a method for producing a sheet-like article for absorbent articles that is different from the position before absorbing the liquid,
A water-absorbing polymer particle spraying step for spraying the water-absorbing polymer particles on the surface of one surface of the belt-shaped base sheet, and the absorption by cutting the base material sheet on which the water-absorbing polymer particles are sprayed The manufacturing method of a sheet-like object provided with the cutting process which forms two or more sex units.

<26>
<25> further comprising an adhesive application step of applying an adhesive to the surface of one surface of the base sheet before the water-absorbing polymer particles are dispersed by the particle-dispersing step of the water-absorbing polymer. The manufacturing method of the sheet-like material of description.
<27>
The adhesive coating step, the water-absorbing polymer particle spraying step, the cutting step is provided in this order,
The adhesive is applied to the surface of one surface of the base sheet in the adhesive application step, and the water-absorbing polymer is coated on the adhesive applied to the surface of the one surface of the base sheet. In the particle spraying step, the water-absorbing polymer particles are sprayed to fix the water-absorbing polymer particles to the base sheet through the adhesive, and then the water-absorbing polymer particles are fixed. The material sheet is cut in the cutting step, and a plurality of the absorptive units in which the particles of the water-absorbing polymer are fixed to the long base portion via the adhesive are formed. Manufacturing method of sheet-like material.
<28>
In the cutting step, the strip-shaped base material sheet is cut along the transport direction of the base material sheet, and is cut at a plurality of locations in a direction orthogonal to the plurality of the elongated base portions and the absorbent unit. The method for producing a sheet-like material according to any one of the above items <25> to <27>.
<29>
In the cutting step, the sheet-like material according to any one of <25> to <28>, wherein a non-cut portion is intermittently formed in the belt-like base material sheet in the transport direction of the base material sheet. Production method.

<30>
In the cutting step, a non-cut portion is intermittently formed in the belt-like base sheet in the transport direction of the base sheet,
In the adhesive application step, except for the planned portion of the non-cut portion, the adhesive is intermittently applied to the surface of one surface of the base sheet. The sheet form according to <26> or <27> Manufacturing method.
<31>
Any of <25> to <30>, in which the particles of the water-absorbing polymer are dispersed on the surface of one surface of the base sheet, except for the planned portion of the non-cut portion, in the particle-absorbing step of the water-absorbing polymer. A method for producing a sheet-like material according to claim 1.
<32>
<25> to applying an adhesive on the dispersed water-absorbing polymer particles after the water-absorbing polymer particles are dispersed on the surface of one surface of the base sheet in the water-absorbing polymer particle spraying step. The manufacturing method of the sheet-like object in any one of <31>.
<33>
Apply the adhesive on the surface of one side of the base sheet,
The water-absorbing polymer particles are dispersed on the adhesive located on one side of the base sheet in a direction perpendicular to the conveying direction, and the water-absorbing polymer is interposed through the adhesive. Then, the hydrophilic polymer particles are fixed to the base sheet, and the other side of the base sheet is folded back onto the water-absorbing polymer particles from the bisecting position. To obtain a laminate with sandwiched particles of a conductive polymer,
The method for producing a sheet-like material according to any one of <25> to <32>, wherein the laminate is cut in the cutting step.
<34>
Apply the adhesive on the surface of one side of the base sheet,
Scattering water-absorbing polymer particles on the surface of the base material sheet coated with the adhesive;
A further adhesive is applied on the dispersed particles of the water-absorbing polymer,
A laminate in which a second base sheet is disposed on the adhesive coated on the water-absorbing polymer particles, and the water-absorbing polymer particles are sandwiched between the base sheet and the second base sheet. And
The method for producing a sheet-like material according to any one of <25> to <32>, wherein the laminate is cut in the cutting step.

DESCRIPTION OF SYMBOLS 1 Sheet-like object 2 Long base part 2s Side edge part 20 Base material sheet 3 Water-absorbing polymer 4 Absorbent unit 5 Adhesive 100 Manufacturing apparatus 110 Base material sheet cut part 111a Cutter blade 111b Rotary die 112 Receiving roll 113 Slit apparatus 114 Conveying device 120 Adhesive application unit 121 Application head 130 Water-absorbing polymer spraying unit 131 Water-absorbing polymer introduction unit 141 Vacuum conveyor 145 Vacuum box 151, 152 Drive roll

Claims (11)

A long base portion having a horizontal direction, a longitudinal direction longer than the horizontal direction, and a thickness direction, and particles of a water-absorbing polymer fixed to the surface of one surface of the long base portion A plurality of absorptive units, each of the absorptive units being arranged so that its longitudinal direction is oriented in at least one direction,
Before the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles are arranged inside both side edges along the longitudinal direction of the elongated base portion,
When the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles swell beyond the side edge of the elongated substrate portion, and the position of the elongated substrate portion is the thickness. A sheet-like material that is different from the position before absorbing the liquid in the direction.   The sheet-like object according to claim 1, wherein the sheet-like object includes a non-slit region in which a plurality of the elongated base parts are connected in the lateral direction at both ends in the vertical direction.   The sheet-like material according to claim 1 or 2, wherein both end portions in the longitudinal direction of the sheet-like material are fixed to the absorbent article.   In the elongated base portion, a distance between both side edges along the longitudinal direction is larger than an average particle diameter in a state before the water-absorbing polymer particles absorb the liquid, and the water-absorbing polymer particles are The sheet-like material according to any one of claims 1 to 3, which is smaller than an average particle diameter in a swollen state by absorbing the liquid.   The sheet-like material according to any one of claims 1 to 4, wherein the long base portion is a nonwoven fabric.   The sheet-like article according to any one of claims 1 to 5, wherein the water-absorbing polymer particles are fixed to the elongated base portion via an adhesive.   The absorbent body for absorbent articles which has the sheet-like material in any one of Claims 1-6, and the liquid-permeable core wrap sheet which coat | covers this sheet-like material.   An absorbent article comprising the absorbent body according to claim 7, a top sheet disposed on the skin facing surface side of the absorbent body, and a back sheet disposed on the non-skin facing surface side of the absorbent body. A long base portion having a horizontal direction, a longitudinal direction longer than the horizontal direction, and a thickness direction, and particles of a water-absorbing polymer fixed to the surface of one surface of the long base portion A plurality of absorptive units provided with each of the absorptive units, the absorptive units being arranged so that the longitudinal direction thereof faces at least one direction,
Before the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles are arranged inside both side edges along the longitudinal direction of the elongated base portion,
When the water-absorbing polymer particles absorb the liquid, the water-absorbing polymer particles swell beyond the side edge of the elongated substrate portion, and the position of the elongated substrate portion is the thickness. In the direction, a method for producing a sheet-like article for absorbent articles that is different from the position before absorbing the liquid,
A water-absorbing polymer particle spraying step for spraying the water-absorbing polymer particles on the surface of one surface of the belt-shaped base sheet, and the absorption by cutting the base material sheet on which the water-absorbing polymer particles are sprayed The manufacturing method of a sheet-like object provided with the cutting process which forms two or more sex units.   An adhesive application step of applying an adhesive to the surface of one surface of the band-shaped base sheet before the water-absorbing polymer particles are dispersed by the water-absorbing polymer particle spraying step. 9. A method for producing a sheet-like material according to 9. The adhesive coating step, the water-absorbing polymer particle spraying step, the cutting step is provided in this order,
The adhesive is applied to the surface of one surface of the base sheet in the adhesive application step, and the water-absorbing polymer is coated on the adhesive applied to the surface of the one surface of the base sheet. In the particle spraying step, the water-absorbing polymer particles are sprayed to fix the water-absorbing polymer particles to the base sheet through the adhesive, and then the water-absorbing polymer particles are fixed. The material sheet is cut in the cutting step, and a plurality of the absorptive units in which the particles of the water-absorbing polymer are fixed to the elongated base portion via the adhesive are formed. Manufacturing method of sheet-like material.

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