Abstract: In an absorbent product (1), a first absorbent sheet (22) is disposed between a top sheet (21) and a back sheet (23). A second absorbent sheet (22a) is disposed between the first absorbent sheet (22) and the back sheet (23). The first absorbent sheet (22) includes a first upper sheet (221), a first highly absorbent material (222), and a first lower sheet (223). The first absorbent sheet (22) extends in the longitudinal direction beyond the longitudinal edges of the second absorbent sheet (22a) on both longitudinal sides. On each longitudinal side, an extension (224) of the first absorbent sheet (22) beyond the second absorbent sheet (22a) includes a back-sheet contact region (225) that is spaced in the longitudinal direction from the longitudinal edge of the second absorbent sheet (22a) and that is in contact with the back sheet (23). This configuration suppresses the return of liquid.

Abstract: An absorbent sheet manufacturing apparatus has a particle collision surface (224) that extends downward from a cylinder outer surface (211) in between the lowermost part of a supply cylinder (21) and a second sheet conveying roller (41). Some of the particles emitted forward in the rotation direction of the supply cylinder (21) from recessed supply portions (212) that have passed a first cover part (221) collide with the particle collision surface (224), and the colliding particles are guided by the particle collision surface (224) onto a first sheet member (91). This suppresses direct collision of particles emitted from the supply cylinder (21) with a second sheet member (92) on the second sheet conveying roller (41). Scattering of particles that have collided with the second sheet member (92) around the first sheet member (91) and the second sheet member (92) is thus suppressed.

Abstract: In an absorbent product (1), a first absorbent sheet (22) is disposed between a top sheet (21) and a back sheet (23). A second absorbent sheet (22a) is disposed between the first absorbent sheet (22) and the back sheet (23). The first absorbent sheet (22) includes a first upper sheet (221), a first highly absorbent material (222), and a first lower sheet (223). The first absorbent sheet (22) extends in the longitudinal direction beyond the longitudinal edges of the second absorbent sheet (22a) on both longitudinal sides. On each longitudinal side, an extension (224) of the first absorbent sheet (22) beyond the second absorbent sheet (22a) includes a back-sheet contact region (225) that is spaced in the longitudinal direction from the longitudinal edge of the second absorbent sheet (22a) and that is in contact with the back sheet (23). This configuration suppresses the return of liquid.

Abstract: An absorbent sheet manufacturing apparatus has a particle collision surface (224) that extends downward from a cylinder outer surface (211) in between the lowermost part of a supply cylinder (21) and a second sheet conveying roller (41). Some of the particles emitted forward in the rotation direction of the supply cylinder (21) from recessed supply portions (212) that have passed a first cover part (221) collide with the particle collision surface (224), and the colliding particles are guided by the particle collision surface (224) onto a first sheet member (91). This suppresses direct collision of particles emitted from the supply cylinder (21) with a second sheet member (92) on the second sheet conveying roller (41). Scattering of particles that have collided with the second sheet member (92) around the first sheet member (91) and the second sheet member (92) is thus suppressed.

Abstract: An absorbent sheet manufacturing apparatus has a particle collision surface (224) that extends downward from a cylinder outer surface (211) in between the lowermost part of a supply cylinder (21) and a second sheet conveying roller (41). Some of the particles emitted forward in the rotation direction of the supply cylinder (21) from recessed supply portions (212) that have passed a first cover part (221) collide with the particle collision surface (224), and the colliding particles are guided by the particle collision surface (224) onto a first sheet member (91). This suppresses direct collision of particles emitted from the supply cylinder (21) with a second sheet member (92) on the second sheet conveying roller (41). Scattering of particles that have collided with the second sheet member (92) around the first sheet member (91) and the second sheet member (92) is thus suppressed.

Abstract: In an absorbent sheet manufacturing apparatus, a first roller (31) and a third roller (51) are rotated while each first concave portion (312) faces a convex portion (512), and therefore sheet concave portion rows (913) are formed on a first sheet member (91). The first sheet member (91) is transferred from a first roller-outer side surface (311) to a cylinder-outer side surface (211) of a supply cylinder (21), and a lower portion of the cylinder-outer side surface (211) is in contact with the first sheet member (91) while supply concave portions (212) supplied with particles face the sheet concave portion rows (913). Therefore, particles can be supplied accurately into each sheet concave portion (912) included in the sheet concave portion rows (913) and be held in the sheet concave portion (912) while the particles are practically prevented from scattering to the outside of the sheet concave portion (912).

Abstract: Concave portions filled with particles of high-absorbent resin are arranged on a side surface of a cylinder part in its circumferential direction. When each concave portion passes about the lowermost portion, the particles are ejected. A first roller conveys a first sheet member so that the first sheet member passes near the above lowermost portion. A second roller is located anterior to the above lowermost portion with respect to a moving direction of the side surface of the cylinder part at the above lowermost portion, and conveys a second sheet member to the vicinity of the above lowermost portion, to place the second sheet member on the first sheet member which has been supplied with particles. In the second roller, annular grooves are formed on the side surface. Therefore, impact on particles which collide with the second sheet member on the second roller is absorbed and scattering of particles is reduced.

Abstract: A particle supplying apparatus includes a cylinder part (21) having a plurality of recessed portion rows (213) arranged along a cylinder rotation axis (R1), each of the recessed portion rows being recessed portions (212) arrayed at a fixed pitch in a circumferential direction in a cylinder outer surface (211). Above the cylinder part is a particle filling opening through which particles of an absorbent material is successively applied to the plurality of recessed portions. Part of the cylinder outer surface is covered by a cover part that extends from the particle filling opening to a lower portion of the cylinder part in a rotation direction, and particles are successively emitted from the plurality of recessed portions in the vicinity of the front edge of the cover part in the rotation direction.

Abstract: An absorbent sheet manufacturing apparatus is provided with a cylinder part (21) having a plurality of through-holes (212) arranged in a circumferential direction. The cylinder part (21) is rotated, and therefore particles of high-absorbent resin are sequentially filled into the through-holes (212) from a particle storage space (217) in the cylinder part (21). In a particle supply region (210) of a lower portion of the cylinder part (21), the inner side surface (215) of the cylinder part (21) is covered with an isolation part (25) so that each through-hole (212) filled with particles is isolated from the particle storage space (217). And in this state, particles are ejected from the through-hole (212). As above, only particles filled in each through-hole (212) are ejected, and therefore a desired amount of particles can be easily supplied from the through-hole (212).

Abstract: An absorbent sheet manufacturing apparatus has a cylinder part having a plurality of concave portions arranged in a circumferential direction, a particle filling part which is located above the cylinder part and which stores particles of high-absorbent resin, to sequentially fill the plurality of concave portions with particles by a particle filling opening in its lower end, and a communication part which is located adjacent to the particle filling opening. A concave portion facing a posterior edge of the particle filling opening is brought into communication with external space through the communication part. Therefore, when particles are filled into the concave portion from the particle filling part, air in the concave portion is forced out by particles entering the concave portion and is easily discharged to the external space through the communication part. As a result, it is possible to increase a density of particles filled in the concave portion.

Abstract: An absorbent sheet manufacturing apparatus has a particle collision surface (224) that extends downward from a cylinder outer surface (211) in between the lowermost part of a supply cylinder (21) and a second sheet conveying roller (41). Some of the particles emitted forward in the rotation direction of the supply cylinder (21) from recessed supply portions (212) that have passed a first cover part (221) collide with the particle collision surface (224), and the colliding particles are guided by the particle collision surface (224) onto a first sheet member (91). This suppresses direct collision of particles emitted from the supply cylinder (21) with a second sheet member (92) on the second sheet conveying roller (41). Scattering of particles that have collided with the second sheet member (92) around the first sheet member (91) and the second sheet member (92) is thus suppressed.

Abstract: In an absorbent sheet manufacturing apparatus, a storage part stores speed determining information including relationships between conveying speed of a first sheet member and rotational speed of a supply cylinder and corresponding respectively to target particle densities. A control part determines the rotational speed of the supply cylinder on the basis of a target particle density, the conveying speed and the speed determining information. Even if various changes are made to the conveying speed of the first sheet member, the amount of particles supplied can be accurately controlled such that the density of particles on the first sheet member matches the target particle density. Even if various changes are made to the target particle density, the amount of particles supplied can be accurately controlled in consideration of the conveying speed such that the density of particles matches the target particle density.

Abstract: An accumulating apparatus (4) has an upper arm (51) in which a plurality of upper rollers (511) are arranged, and a lower arm (52) in which a plurality of lower rollers (521) are arranged. An upper gear (61) is fixed to the upper arm and a lower gear (62) is fixed to the lower arm. The upper gear is engaged with the lower gear so that the upper arm and the lower arm are simultaneously moved in opposite directions with respect to a vertical direction. Therefore, when moving the lower arm in the vertical direction, influence of the weight of the lower arm is canceled by the weight of the upper arm, and a force to move the lower arm upward can be reduced. As the result, an air cylinder (63) for changing a distance between the upper arm and the lower arm can be downsized.

Abstract: A disposable diaper comprising: a fastening tape having a tab part which is formed at one end of a tape substrate, a fixing part which is formed at the other end of the tape substrate, and an adjustment part which is formed between the tab part and the fixing part; a diaper main body having a front part, a back part and a crotch part positioned between the front part and the back part; wherein an attachment is fixed to the tab part, the fastening tape is attached to a side end of the front or back part of the diaper main body at the fixing part, the adjustment part is folded and temporarily joined to the diaper main body and/or the fastening tape at a joining part, and a length of the fastening tape between the attachment and the joining part which is the nearest to the attachment is longer than a length between an outer edge of the diaper main body and the joining part which is the nearest to the attachment.

Abstract: An absorbent sheet manufacturing apparatus is provided with a cylinder part (21) having a plurality of through-holes (212) arranged in a circumferential direction. The cylinder part (21) is rotated, and therefore particles of high-absorbent resin are sequentially filled into the through-holes (212) from a particle storage space (217) in the cylinder part (21). In a particle supply region (210) of a lower portion of the cylinder part (21), the inner side surface (215) of the cylinder part (21) is covered with an isolation part (25) so that each through-hole (212) filled with particles is isolated from the particle storage space (217). And in this state, particles are ejected from the through-hole (212). As above, only particles filled in each through-hole (212) are ejected, and therefore a desired amount of particles can be easily supplied from the through-hole (212).

Abstract: An absorbent sheet manufacturing apparatus has a cylinder part having a plurality of concave portions arranged in a circumferential direction, a particle filling part which is located above the cylinder part and which stores particles of high-absorbent resin, to sequentially fill the plurality of concave portions with particles by a particle filling opening in its lower end, and a communication part which is located adjacent to the particle filling opening. A concave portion facing a posterior edge of the particle filling opening is brought into communication with external space through the communication part. Therefore, when particles are filled into the concave portion from the particle filling part, air in the concave portion is forced out by particles entering the concave portion and is easily discharged to the external space through the communication part. As a result, it is possible to increase a density of particles filled in the concave portion.

Abstract: Concave portions filled with particles of high-absorbent resin are arranged on a side surface of a cylinder part in its circumferential direction. When each concave portion passes about the lowermost portion, the particles are ejected. A first roller conveys a first sheet member so that the first sheet member passes near the above lowermost portion. A second roller is located anterior to the above lowermost portion with respect to a moving direction of the side surface of the cylinder part at the above lowermost portion, and conveys a second sheet member to the vicinity of the above lowermost portion, to place the second sheet member on the first sheet member which has been supplied with particles. In the second roller, annular grooves are formed on the side surface. Therefore, impact on particles which collide with the second sheet member on the second roller is absorbed and scattering of particles is reduced.

Abstract: In an absorbent sheet manufacturing apparatus, a first roller (31) and a third roller (51) are rotated while each first concave portion (312) faces a convex portion (512), and therefore sheet concave portion rows (913) are formed on a first sheet member (91). The first sheet member (91) is transferred from a first roller-outer side surface (311) to a cylinder-outer side surface (211) of a supply cylinder (21), and a lower portion of the cylinder-outer side surface (211) is in contact with the first sheet member (91) while supply concave portions (212) supplied with particles face the sheet concave portion rows (913). Therefore, particles can be supplied accurately into each sheet concave portion (912) included in the sheet concave portion rows (913) and be held in the sheet concave portion (912) while the particles are practically prevented from scattering to the outside of the sheet concave portion (912).

Abstract: Concave portions filled with particles of high-absorbent resin are arranged on an outer side surface of a cylinder part in a circumferential direction. When each concave portion passes an ejection start position lying posterior to the lowermost portion in a rotation direction, particles are ejected along a tangent line of the side surface at the ejection start position. A sheet conveying roller is located near the above lowermost portion. Annular grooves facing concave portions are formed on an outer side surface of the roller along a circumferential direction. The roller conveys a sheet member along its side surface so that the sheet member passes near the above lowermost portion. In the sheet member, groove portions corresponding to the annular grooves are formed. Since the tangent line intersects with the side surface of the roller, it is possible to eject particles into the groove portions and reduce scattering of particles.

Abstract: In an outer covering sheet of an absorbent product, first, second and third adhesive layer elements each extending in a left-right direction are formed on a second covering sheet by spiral spray application. Each of these adhesive layer elements has wide width parts and narrow width parts which are continuous with the wide width parts, respectively. Therefore, hot melt adhesive can be stably discharged across the entire length of the adhesive layer element, unlike in the case where only wide width parts are formed intermittently. As a result, it is possible to obtain the outer covering sheet which is a sheet member having the adhesive layer elements with desired shapes where unevenness is decreased. In the absorbent product which is manufactured with use of the sheet member, the comfort level of the wearer can be prevented from decreasing due to unevenness of thickness of the adhesive layer elements.