Patents Assigned to Livedo Corporation
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Patent number: 8758543Abstract: A disposable absorbent article comprises an outer cover, and an absorbent member attached to the skin facing side of the outer cover. The absorbent member includes an absorber. At least a crotch zone of the outer cover is subjected to a softening process for softening a material of the outer cover.Type: GrantFiled: December 15, 2009Date of Patent: June 24, 2014Assignee: Livedo CorporationInventors: Kiyoshi Yagyu, Masaru Fujioka
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Patent number: 8758319Abstract: In a standing part (342) of each side wall part (34) in an absorbent product (1), an inwardly bending part (3423) is formed between a first elastic member (35) and a second elastic member (36). When the absorbent product (1) is worn, the inwardly bending part (3423) where no elastic member is provided comes into contact with a wearer to be deformed into surface shape, and a portion in the vicinity of the inwardly bending part (3423) and the first elastic member (35) contacts with the wearer in surface shape. Therefore, the wearer is prevented from being compressed excessively by the first elastic member (35) and the second elastic member (36) and excrement is prevented from leaking out to the outer side of the absorbent product (1).Type: GrantFiled: September 1, 2010Date of Patent: June 24, 2014Assignee: Livedo CorporationInventor: Yuki Takahashi
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Patent number: 8758320Abstract: 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.Type: GrantFiled: February 26, 2010Date of Patent: June 24, 2014Assignee: Livedo CorporationInventors: Kazuya Maruhata, Hironobu Yokokawa
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Publication number: 20140144587Abstract: 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.Type: ApplicationFiled: July 5, 2012Publication date: May 29, 2014Applicant: LIVEDO CORPORATIONInventor: Kazuya Maruhata
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Publication number: 20140144586Abstract: 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).Type: ApplicationFiled: July 5, 2012Publication date: May 29, 2014Applicant: LIVEDO CORPORATIONInventor: Kazuya Maruhata
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Publication number: 20140138031Abstract: 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.Type: ApplicationFiled: July 5, 2012Publication date: May 22, 2014Applicant: LIVEDO CORPORATIONInventor: Kazuya Maruhata
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Patent number: 8729332Abstract: A pants-type disposable diaper comprises: a pants-shaped outer member having a front part, a back part, and a crotch part positioned between the front part and the back part, and having a waist opening and a pair of leg openings formed by joining the front part and the back part; an absorbent main body disposed on an inner surface of the pants-shaped outer member at the crotch part, and comprising a top sheet, a back sheet, and an absorbent core disposed between the top sheet and the back sheet; and an end-holding sheet covering a longitudinal end of the absorbent main body at the front part and/or the back part of the pants-shaped outer member, and attached to the pants-shaped outer member and the absorbent main body with a hot-melt adhesive; wherein the end-holding sheet includes a composite nonwoven fabric in which a spunbonded nonwoven fabric layer is laminated on an inner surface of a meltblown nonwonven fabric layer.Type: GrantFiled: March 15, 2010Date of Patent: May 20, 2014Assignee: Livedo CorporationInventors: Yuki Takahashi, Kenji Nakaoka
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Publication number: 20140124143Abstract: 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).Type: ApplicationFiled: July 5, 2012Publication date: May 8, 2014Applicant: LIVEDO CORPORATIONInventor: Kazuya Maruhata
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Publication number: 20140116626Abstract: 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.Type: ApplicationFiled: July 5, 2012Publication date: May 1, 2014Applicant: LIVEDO CORPORATIONInventor: Kazuya Maruhata
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Patent number: 8709581Abstract: 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.Type: GrantFiled: September 23, 2010Date of Patent: April 29, 2014Assignee: Livedo CorporationInventors: Yuki Takahashi, Kazuya Maruhata
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Publication number: 20140099429Abstract: 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.Type: ApplicationFiled: September 18, 2013Publication date: April 10, 2014Applicant: LIVEDO CORPORATIONInventor: Kazuya MARUHATA
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Patent number: 8686217Abstract: An absorbent product has a top sheet, an absorbent core and a back sheet. The absorbent core includes 40% by weight or more of high absorbent resin powder and it is possible to slim down the absorbent core while keeping a sufficient amount of absorption to thereby achieve slimming down of the absorbent product. A top sheet lower part contacting the high absorbent resin powder in the absorbent core includes hydrophilic fibers having water retention characteristics, and moisture is temporarily retained in the top sheet lower part before reaching the absorbent core and rapidly disperses in a range facing the absorbent core of the top sheet lower part. As a result, it is possible to reliably absorb the moisture of excrement in the absorbent core and to simplify a structure of the absorbent product.Type: GrantFiled: August 31, 2012Date of Patent: April 1, 2014Assignee: Livedo CorporationInventors: Kenichi Uchimoto, Yasuji Yasumitsu
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Patent number: 8568552Abstract: 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.Type: GrantFiled: December 20, 2011Date of Patent: October 29, 2013Assignee: Livedo CorporationInventors: Yuki Takahashi, Kazuya Maruhata
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Patent number: 8556875Abstract: The invention provides an absorbent laminate for absorbing a body fluid and usable for a disposable absorbent article, in which the absorbent laminate comprises an upper layer absorbent body and a lower layer absorbent body, the upper layer absorbent body has at least one opening part extended continuously or discontinuously in the longitudinal direction of the upper layer absorbent body, and the maximum width W1 of the opening part is 40% or less of the minimum width W2 of the upper layer absorbent body. The invention also provides a disposable absorbent article provided with the absorbent laminate.Type: GrantFiled: January 24, 2007Date of Patent: October 15, 2013Assignee: Livedo CorporationInventors: Yuki Takahashi, Akiko Tatsukawa
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Patent number: 8545472Abstract: In a pants-type absorbent product, a first middle elastic member is located along a horizontal direction in a middle front part between a pair of leg openings in an outer covering sheet. The first middle elastic member contracts a first sheet and a second sheet, and middle gathers are formed. Thus, it is possible to improve fitting of a middle part to a wearer. In the middle front part, both ends of the first middle elastic member are apart from edges of the pair of leg openings, and a pair of non-contracted parts are provided between the both ends of the first middle elastic member and the edges of the pair of leg openings, to thereby improve flexibility of portions in the vicinities of the leg openings in the outer covering sheet.Type: GrantFiled: September 14, 2011Date of Patent: October 1, 2013Assignee: Livedo CorporationInventors: Masaru Fujioka, Yuki Takahashi
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Patent number: 8535288Abstract: In an absorbent product (1), each of a pair of side wall parts (34) has two side wall end parts (341) bonded on both end portions of a bonded part (33) and a standing part (342) standing up from the main body part (2) between the two side wall end parts (341). The side wall part (34) is folded outwardly at an inner edge of the bonded part (33) and further folded inwardly. Each side wall end part (341) has a bonded section (3411) and a half standing part (3412) which is continuous from the standing part (342). The half standing part (3412) stands up from the main body part (2) lower than the standing part (342) and fits the vicinity of wearer's crotch in wearing. Thus, it is possible to prevent side leakage from the vicinity of end portions in a longitudinal direction of the absorbent product (1).Type: GrantFiled: October 6, 2009Date of Patent: September 17, 2013Assignee: Livedo CorporationInventor: Kenji Nakaoka
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Patent number: 8524355Abstract: A disposable absorbent article includes an absorbent mat provided between a liquid-permeable top sheet and a liquid-impermeable back sheet. Herein, the absorbent mat includes a sheet-like water-absorbent layer that contains a water-absorbent resin powder but that does not contain pulp fibers, and a fiber assembly layer that contains both the water-absorbent resin powder and the pulp fibers, the sheet-like water-absorbent layer and the fiber assembly layer arranged sequentially in this order from a top sheet side. The fiber assembly layer includes a fiber presence region in which both the pulp fibers and the water-absorbent resin powder are present, and a fiber absence region in which both the pulp fibers and the water-absorbent resin powder are absent, the fiber presence region and the fiber absence region formed to be adjacent with each other.Type: GrantFiled: May 10, 2004Date of Patent: September 3, 2013Assignee: Livedo CorporationInventor: Kenji Nakaoka
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Publication number: 20130226126Abstract: An absorbent body of a diaper has a central absorbent core, a pair of side absorbent cores and a pair of side elastic members. The side elastic members lie left and right of a front portion of the central absorbent core. The side absorbent cores lie left and right of rear and middle portions of the central absorbent core. In the diaper, by contraction of the side elastic members, the side absorbent cores come into close contact with the insides of thighs of a wearer, and urine is prevented from leaking from leg circumferences. Since the side absorbent cores are positioned left and right of the rear and middle portions of the central absorbent core, portions of the wearer's leg circumferences in the vicinity of the front are not covered with the side absorbent cores, and interference with leg movement of the wearer is prevented.Type: ApplicationFiled: November 7, 2011Publication date: August 29, 2013Applicant: LIVEDO CORPORATIONInventors: Yuki Takahashi, Emi Amano
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Publication number: 20130226127Abstract: In a disposable diaper in a developed state where a front cover sheet and a rear cover sheet are separated from each other to be developed, as distance in a left-right direction from an absorbent body increases, a lower edge of the rear cover sheet goes away from an upper edge of the rear cover sheet and then goes toward the upper edge. A leg elastic member is bonded on the rear cover sheet along its lower edge, in left and right of the absorbent body. As above, the lower end portion of the rear cover sheet is convex downward in each of left and right of the absorbent body, and lower portions of hips of a wearer are wrapped with the lower end portions. It is therefore possible to suppress leakage of excrement from the lower portions of hips of the wearer.Type: ApplicationFiled: November 7, 2011Publication date: August 29, 2013Applicant: LIVEDO CORPORATIONInventors: Yuki Takahashi, Emi Amano
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Publication number: 20130144243Abstract: In an absorbent product, a front pocket, a pair of side pockets and a rear pocket are formed between a back sheet member, and a front absorbent core, a pair of side absorbent cores and a rear absorbent core, and excrement which has passed through an opening is collected therein. In the absorbent product, the side absorbent cores are bonded on inner surfaces of standing gather parts. Thus, since the standing gather parts stand up, the side absorbent cores become far away from the back sheet member. Side wall parts of the side pockets have structure where the side absorbent cores are bonded on the inner surfaces of side sheets and outer covering sheet. Thus, it is possible to increase stiffness of the side wall parts of the side pockets, to thereby suppress deformation of the side wall parts due to a weight of excrement collected in the side pockets.Type: ApplicationFiled: April 13, 2011Publication date: June 6, 2013Applicant: LIVEDO CORPORATIONInventors: Hirofumi Miyake, Akiko Tatsukawa