JP5448513B2 - Pants-type absorbent article - Google Patents

Pants-type absorbent article Download PDF

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JP5448513B2
JP5448513B2 JP2009071027A JP2009071027A JP5448513B2 JP 5448513 B2 JP5448513 B2 JP 5448513B2 JP 2009071027 A JP2009071027 A JP 2009071027A JP 2009071027 A JP2009071027 A JP 2009071027A JP 5448513 B2 JP5448513 B2 JP 5448513B2
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seal
region
seal region
longitudinal direction
length
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JP2010220783A (en
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純 佐々木
杉 大谷
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Kao Corp
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Kao Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4871—Underwear
    • B29L2031/4878—Diapers, napkins

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Description

本発明は、使い捨ておむつ等のパンツ型吸収性物品に関する。   The present invention relates to a pants-type absorbent article such as a disposable diaper.

従来、表面シート、裏面シート及び液保持性の吸収体を備え、腹側部の両側縁部と背側部の両側縁部とを互いに重ね合わせた重合部を融着して形成された一対のサイドシール部を有するパンツ型の吸収性物品が知られている。
また、種々の目的から、サイドシール部に形成する融着部の形成パターンを工夫したものが種々提案されている。
例えば、本出願人は、良好な装着感や風合いを保持しながら良好なフィット性を発揮するパンツ型使い捨ておむつとして、ウエスト開口部の周縁部及びレッグ開口部の周縁部に位置するサイドシール部の融着部を、該サイドシール部の幅方向の略中央部に非溶着部を有する間歇接合部としたパンツ型使い捨ておむつを提案した（特許文献１参照）。 Conventionally, it is provided with a top sheet, a back sheet, and a liquid-retaining absorber, and a pair of formed by fusing overlapping portions in which both side edges of the abdominal side and both side edges of the back side are overlapped with each other A pants-type absorbent article having a side seal portion is known.
For various purposes, various devices have been proposed in which the formation pattern of the fused portion formed on the side seal portion is devised.
For example, the applicant of the present invention is a pants-type disposable diaper that exhibits good fit while maintaining a good wearing feeling and texture, and the side seal portion positioned at the peripheral edge of the waist opening and the peripheral edge of the leg opening. A pants-type disposable diaper was proposed in which the fused part was an intermittent joint part having a non-welded part at a substantially central part in the width direction of the side seal part (see Patent Document 1).

また、特許文献２には、前身頃と後身頃との側部の接合部が、単位融着部が多数一定の間隔で配列されて形成され、かつ、同一の高さ寸法の単位融着部が連続している単位融着部群を有し、さらに高さ寸法の相違する単位融着部群毎で区間分けされているパンツ型使い捨ておむつが記載されている
また、特許文献３には、前部のシームパネルと背部のシームパネルとを接合することにより、ウエスト開口部と２つのレッグ開口部とを形成した、例えばおむつである衣類が記載されており、特許文献２には、そのような衣類のシームパネル同士を、多数の接合部の集合からなるクラスターを、複数設けて接合することが記載されている。 Further, in Patent Document 2, the side portion of the front body and the back body is formed by arranging a large number of unit fusion parts at regular intervals, and the unit fusion part having the same height dimension. Pants-type disposable diapers that have a unit fused part group that is continuous and are divided into sections for each unit fused part group that has a different height dimension are also disclosed in Patent Document 3. A garment, such as a diaper, is described in which a waist opening and two leg openings are formed by joining a front seam panel and a back seam panel. It is described that a plurality of clusters composed of a set of a large number of joint portions are joined to seam panels of a simple garment.

特開平１０−１３７２８７号公報Japanese Patent Laid-Open No. 10-137287 特開２００８−８６４９５号公報JP 2008-86495 A 特開２００２−３６９８４２号公報JP 2002-369842 A

ところで、着用者のウエスト周りは、周長が長く、またその周長が姿勢の変化や呼吸により変動するため、ウエスト周りに当接する部分の柔らかさや感触は、装着感に大きく影響する。
しかし、特許文献１，２の使い捨ておむつにおいては、おむつを履いたり履かせる際、あるいは着用中に、ウエスト開口部の周縁部を上方から、もしくは側方（肌に対して垂直な方向）から押圧するような力が加わった際に、サイドシール部の硬くなった融着部が、着用者に違和感を与えたり、着用者や介護者等の肌を刺激する恐れがある。
特許文献３の衣類も、ウエスト周りの感触に配慮が不充分であり、また、前部のシームパネルのシームパネルの外（内）面に背部のシームパネルの内（外）面を重ねて両パネルを接合しているため、製造設備が複雑化する。 By the way, since the circumference of the wearer's waist is long and the circumference varies due to a change in posture and breathing, the softness and feel of the portion in contact with the circumference of the waist greatly affects the wearing feeling.
However, in the disposable diapers disclosed in Patent Documents 1 and 2, the peripheral edge of the waist opening is pressed from above or from the side (perpendicular to the skin) when wearing or wearing diapers. When such a force is applied, the hardened fused portion of the side seal portion may give the wearer an uncomfortable feeling or may irritate the skin of the wearer or caregiver.
The garment of Patent Document 3 also has insufficient consideration for the feel around the waist, and the inner (outer) surface of the back seam panel overlaps the outer (inner) surface of the front seam panel. Since the panels are joined, the manufacturing equipment becomes complicated.

従って、本発明は、サイドシール部による違和感や肌への刺激が生じにくく、装着感に優れたパンツ型吸収性物品に関する。   Therefore, the present invention relates to a pants-type absorbent article that is less likely to cause discomfort and irritation to the skin due to the side seal portion and is excellent in wearing feeling.

本発明は、腹側部の両側縁部と背側部の両側縁部とを互いに重ね合わせた重合部を融着して形成された一対のサイドシール部を有するパンツ型吸収性物品であって、前記サイドシール部は、その長手方向の長さが互いに同じである複数の融着部が該長手方向に一定のピッチで配置された第１シール領域と、第１シール領域における前記融着部とは前記長手方向の長さが異なる複数の融着部が該長手方向に一定のピッチで配置された１又は２以上の他のシール領域とを有しており、第１シール領域は、ウエスト開口部側の端部に形成されており、第１シール領域における融着部の前記長さが、前記他のシール領域における融着部の前記長さよりも短い、パンツ型吸収性物品を提供するものである。   The present invention is a pants-type absorbent article having a pair of side seal portions formed by fusing overlapping portions in which both side edge portions on the ventral side portion and both side edge portions on the back side portion are overlapped with each other. The side seal portion includes a first seal region in which a plurality of fusion portions having the same length in the longitudinal direction are arranged at a constant pitch in the longitudinal direction, and the fusion portion in the first seal region. And a plurality of fusion parts having different lengths in the longitudinal direction have one or two or more other seal regions arranged at a constant pitch in the longitudinal direction, and the first seal region has a waist Provided is a pant-type absorbent article, which is formed at an end on the opening side, and wherein the length of the fusion part in the first seal region is shorter than the length of the fusion part in the other seal region. Is.

本発明のパンツ型吸収性物品は、サイドシール部による違和感や肌への刺激が生じにくく、装着感に優れている。   The pant-type absorbent article of the present invention is less likely to cause discomfort or irritation to the skin due to the side seal portion, and is excellent in wearing feeling.

図１は、本発明の一実施形態であるパンツ型使い捨ておむつの斜視図である。FIG. 1 is a perspective view of a pants-type disposable diaper that is an embodiment of the present invention. 図２は、図１に示すパンツ型使い捨ておむつの展開且つ伸張状態を示す図である。展開且つ伸長状態とは、サイドシール部を引き剥がして、パンツ型吸収性物品を展開状態とし、その展開状態の吸収性物品を、各部の弾性部材を伸長させて、設計寸法（弾性部材の影響を一切排除した状態で平面状に広げたときの寸法と同じ）となるまで拡げた状態をいう。FIG. 2 is a view showing a developed and extended state of the pants-type disposable diaper shown in FIG. The expanded and extended state means that the side seal part is peeled off to make the pant-type absorbent article in an expanded state, and the expanded absorbent member is stretched to the elastic member of each part, and the design dimensions (influence of the elastic member) Is the same as the dimension when the sheet is expanded in a flat state with all of the above removed. 図３（ａ）は、図２のＹ１−Ｙ１線拡大断面図であり、図３（ｂ）は、図２のＹ２−Ｙ２線拡大断面図であり、図３（ｃ）は、サイドシール部の拡大平面図である。3A is an enlarged sectional view taken along line Y1-Y1 of FIG. 2, FIG. 3B is an enlarged sectional view taken along line Y2-Y2 of FIG. 2, and FIG. 3C is a side seal portion. FIG. 図４は、図１に示すパンツ型使い捨ておむつのサイドシール部を形成するエンボスロールの模式図である。FIG. 4 is a schematic view of an embossing roll forming a side seal portion of the pants-type disposable diaper shown in FIG. 図５は、本発明の他の実施形態におけるサイドシール部の拡大平面図である。FIG. 5 is an enlarged plan view of a side seal portion in another embodiment of the present invention.

以下、本発明のパンツ型吸収性物品をその好ましい実施形態に基づいて説明する。
本発明の一実施形態であるパンツ型使い捨ておむつ１（以下、「おむつ１」ともいう。）は、腹側部Ａの両側縁部６ａ，６ａと背側部Ｂの両側縁部６ｂ，６ｂとを互いに重ね合わせた重合部７，７を融着して形成された一対のサイドシール部８，８を有している。重合部７，７は、それぞれ、腹側部Ａの肌当接面側の面と背側部Ｂの肌当接面側の面とを合掌状に重ね合わせてなり、それぞれ、着用状態におけるおむつ１の縦方向（上下方向）と同方向に長い形状を有している。腹側部Ａは、おむつ１の装着時に、装着者の腹側に配される部位であり、背側部Ｂは、装着者の背側に配される部位であり、股下部Ｃは、装着者の股間部に配される部位である。 Hereinafter, the pants-type absorbent article of the present invention will be described based on preferred embodiments thereof.
A pants-type disposable diaper 1 (hereinafter also referred to as “diaper 1”) according to an embodiment of the present invention includes both side edges 6a and 6a of the ventral side A and both side edges 6b and 6b of the back side B. A pair of side seal portions 8, 8 formed by fusing the overlapping portions 7, 7 superposed on each other. The overlapping portions 7 and 7 are each formed by overlapping the skin contact surface side surface of the abdominal side portion A and the skin contact surface side surface of the back side portion B in the shape of a palm, and each is a diaper in a worn state. 1 has a long shape in the same direction as the vertical direction (vertical direction). When the diaper 1 is worn, the abdominal side A is a part disposed on the wearer's abdomen, the back side B is a part disposed on the back of the wearer, and the crotch C is worn. It is a site | part distribute | arranged to a person's crotch part.

使い捨ておむつ１は、図１，図２に示すように、その長手方向（腹側部Ａから股下部Ｃを通って背側部Ｂに向かう方向）に延びる中心線ＣＬに対して左右対称である。従って、以下の説明では、主に、図１及び図２における左側の構成について説明するが、右側の構成も左右対称である以外は同様である。以下、おむつ１の長手方向（おむつ１を図２に示すように展開して伸長した状態において、前記中心線ＣＬと平行な方向）を「Ｙ方向」ともいう。   As shown in FIGS. 1 and 2, the disposable diaper 1 is symmetrical with respect to a center line CL extending in the longitudinal direction (the direction from the ventral side A to the back side B through the crotch C). . Therefore, in the following description, the configuration on the left side in FIGS. 1 and 2 will be mainly described, but the configuration on the right side is the same except that it is bilaterally symmetric. Hereinafter, the longitudinal direction of the diaper 1 (the direction parallel to the center line CL when the diaper 1 is expanded and expanded as shown in FIG. 2) is also referred to as “Y direction”.

本実施形態のおむつ１について、更に詳述する。
本実施形態のおむつ１は、図２に示すように、液透過性の表面シート２と、液不透過性又は撥水性の裏面シート３と、両シート２，３間に介在する吸収体４とを有する実質的に縦長の吸収性本体５、及び吸収性本体５の裏面シート側（非肌当接面側）に位置して該吸収性本体５を固定している外包材６を備えている。 The diaper 1 of this embodiment is further explained in full detail.
As shown in FIG. 2, the diaper 1 of the present embodiment includes a liquid-permeable top sheet 2, a liquid-impermeable or water-repellent back sheet 3, and an absorber 4 interposed between both sheets 2 and 3. A substantially vertically long absorbent main body 5, and an outer packaging material 6 positioned on the back sheet side (non-skin contact surface side) of the absorbent main body 5 and fixing the absorbent main body 5. .

おむつ１は、腹側部Ａの両側縁６ａ，６ａと背側部Ｂの両側縁部６ｂ，６ｂとを互いに重ね合わせた重合部７，７を融着して、一対のサイドシール部８，８を形成することにより、図１に示す、ウエスト開口部ＷＯ及び一対のレッグ開口部ＬＯ，ＬＯを有するパンツ型の形態に形成されている。   The diaper 1 is composed of a pair of side seal portions 8, 7 by fusing overlapping portions 7, 7 in which the side edges 6 a, 6 a of the ventral side A and the side edges 6 b, 6 b of the back side B are overlapped with each other. 8 is formed into a pant-type configuration having a waist opening WO and a pair of leg openings LO, LO shown in FIG.

外包材６は、吸収性本体５の周縁部の外方全域に亘って延出しており、おむつの外面をなす外層シート６１と、外層シート６１の内面側に配されている内層シート６２と、外層シート６１及び内層シート６２が、それぞれ吸収性本体５より長手方向（Ｙ方向）の端部より外方部分において内層シート６２側に折り返されて生じた折り返し部６１ａ，６１ｂ及び６２ａ，６２ｂを有している。   The outer packaging material 6 extends over the entire outer periphery of the peripheral portion of the absorbent main body 5, an outer layer sheet 61 that forms the outer surface of the diaper, and an inner layer sheet 62 that is disposed on the inner surface side of the outer layer sheet 61, The outer layer sheet 61 and the inner layer sheet 62 have folded portions 61a, 61b and 62a, 62b generated by folding back to the inner layer sheet 62 side from the end in the longitudinal direction (Y direction) from the absorbent main body 5, respectively. doing.

おむつ１においては、外包材６は、図２に示すように、その両側縁が、長手方向（Ｙ方向）中央部において、それぞれ内方に向かって凸の円弧状に湾曲しており、長手方向中央部が括れた形状を有している。また、外包材６は、図１〜図３に示すように、おむつの外面をなす外層シート６１と、外層シート６１の内面側に配されている内層シート６２と、両シート６１，６２間に配設固定された、複数本のウエスト弾性部材６３、複数本のレッグ弾性部材６４及び複数本の胴回り部弾性部材６５とから形成されている。   In the diaper 1, as shown in FIG. 2, the outer packaging material 6 has both side edges curved in a convex arc shape inward in the longitudinal direction (Y direction) central portion, and the longitudinal direction. The central part has a constricted shape. In addition, as shown in FIGS. 1 to 3, the outer packaging material 6 includes an outer layer sheet 61 that forms the outer surface of the diaper, an inner layer sheet 62 that is disposed on the inner surface side of the outer layer sheet 61, and both the sheets 61 and 62. The plurality of waist elastic members 63, the plurality of leg elastic members 64, and the plurality of waistline elastic members 65 are arranged and fixed.

複数本のウエスト弾性部材６３は、腹側部Ａ及び背側部Ｂそれぞれのウエスト開口部ＷＯの周縁部に設けられている。各胴回り部弾性部材６３は、伸長状態で、おむつ１の幅方向に沿って配設固定されている。おむつ１の幅方向は、着用時における着用者のウエスト周りないし胴回りの周方向と同方向である。以下、おむつ１の幅方向（おむつ１を図２に示すように展開して伸長した状態において、前記中心線ＣＬと垂直な方向）を「Ｘ方向」ともいう。
複数本のレッグ弾性部材６４は、図２に示すように、レッグ開口部ＬＯの周縁部に設けられており、各レッグ弾性部材６４は、伸長状態で、レッグ開口部ＬＯの周方向に沿って配設固定されている。
複数本の胴回り部弾性部材６５は、図２に示すように、腹側部Ａ及び背側部Ｂそれぞれにおいて、ウエスト弾性部材６３の配置部位と股下部Ｃの端部との間に配されている。胴回り部弾性部材６５は、前記中心線ＣＬの左右両側に分割された状態で、それぞれおむつ１の幅方向に沿って配設固定されている。 The plurality of waist elastic members 63 are provided at the peripheral edge portions of the waist openings WO of the ventral side portion A and the back side portion B, respectively. Each waistline elastic member 63 is disposed and fixed along the width direction of the diaper 1 in an extended state. The width direction of the diaper 1 is the same as the circumferential direction of the wearer's waist or waistline when worn. Hereinafter, the width direction of the diaper 1 (the direction perpendicular to the center line CL when the diaper 1 is expanded and expanded as shown in FIG. 2) is also referred to as “X direction”.
As shown in FIG. 2, the plurality of leg elastic members 64 are provided at the peripheral edge of the leg opening LO, and each leg elastic member 64 is in an extended state along the circumferential direction of the leg opening LO. The arrangement is fixed.
As shown in FIG. 2, the plurality of waistline elastic members 65 are arranged between the portion where the waist elastic member 63 is disposed and the end of the crotch C in each of the abdominal part A and the back part B. Yes. The waistline elastic member 65 is disposed and fixed along the width direction of the diaper 1 in a state where the waistline elastic member 65 is divided on both the left and right sides of the center line CL.

おむつ１における外層シート６１を構成するシート材は、腹側部Ａ及び背側部Ｂにおいて、図２，図３（ａ）、図３（ｂ）に示すように、外層シート６１と内層シート６２とによってウエスト弾性部材６３を挟持固定した部位よりも更に長手方向（Ｙ方向）外方に延出する長さを有し、その延出した部分が、ウエスト開口部ＷＯの周縁端Ｗｅにおいて、内層シート６２側に折り返されて折り返し部６１ａ，６１ｂを形成している。
折り返し部６１ａは、図３（ａ）に示すように、その長手方向（Ｙ方向）の端縁６１ａ１が、吸収性本体５の長手方向（Ｙ方向）の腹側部Ａ側の端縁よりも股下部Ｃ寄りの位置まで延びている。同様に折り返し部６１ｂも、図３（ｂ）に示すように、その長手方向（Ｙ方向）の端縁６１ｂ１が、吸収性本体５の長手方向（Ｙ方向）の背側部Ｂ側の端縁よりも股下部Ｃ寄りの位置まで延びている。 As shown in FIGS. 2, 3 (a), and 3 (b), the sheet material that constitutes the outer layer sheet 61 in the diaper 1 is an abdominal side portion A and a back side portion B. And a portion that extends further in the longitudinal direction (Y direction) than the portion where the waist elastic member 63 is clamped and fixed, and the extended portion is the inner layer at the peripheral edge We of the waist opening WO. Folded portions 61a and 61b are formed by folding back to the sheet 62 side.
As shown in FIG. 3A, the folded portion 61 a has an end edge 61 a 1 in the longitudinal direction (Y direction) that is more than an end edge on the ventral side A side in the longitudinal direction (Y direction) of the absorbent main body 5. It extends to a position near the crotch C. Similarly, as shown in FIG. 3B, the folded portion 61b has an edge 61b1 in the longitudinal direction (Y direction) that is an edge on the back side portion B side in the longitudinal direction (Y direction) of the absorbent main body 5. It extends to a position closer to the crotch C.

おむつ１における内層シート６２を構成するシート材は、腹側部Ａ及び背側部Ｂにおいて、図２，図３（ａ）、図３（ｂ）に示すように、外層シート６１と内層シート６２とによってウエスト弾性部材６３を挟持固定した部位よりも更に長手方向（Ｙ方向）外方に延出する長さを有し、その延出した部分が、ウエスト開口部ＷＯの周縁端Ｗｅにおいて、外層シート６１と一体的に、内層シート６２側に折り返されて折り返し部６２ａ，６２ｂを形成している。
折り返し部６２ａは、図３（ａ）に示すように、その長手方向（Ｙ方向）の端縁６２ａ１が、ウエスト開口部ＷＯの周縁端Ｗｅと、吸収性本体５の腹側部Ａ側の端縁との間の中央部付近まで延びている。同様に折り返し部６２ｂも、図３（ｂ）に示すように、その長手方向（Ｙ方向）の端縁６２ｂ１が、ウエスト開口部ＷＯの周縁端Ｗｅと、吸収性本体５の背側部Ｂ側の端縁との間の中央部付近まで延びている。
このように、折り返し部６２ａ，６２ｂの長手方向（Ｙ方向）の長さは、折り返し部６１ａ，６１ｂの長手方向（Ｙ方向）の長さよりも短く形成されている。 As shown in FIGS. 2, 3 (a), and 3 (b), the sheet material constituting the inner layer sheet 62 in the diaper 1 is an abdominal side portion A and a back side portion B. And the length that extends further in the longitudinal direction (Y direction) than the portion where the waist elastic member 63 is clamped and fixed, and the extended portion is the outer layer at the peripheral edge We of the waist opening WO. The sheet 61 is folded back to the inner layer sheet 62 side to form folded portions 62a and 62b.
As shown in FIG. 3A, the folded portion 62 a has an end edge 62 a 1 in the longitudinal direction (Y direction), and a peripheral edge We of the waist opening WO and an end on the abdominal side A side of the absorbent main body 5. It extends to near the center between the edges. Similarly, as shown in FIG. 3 (b), the folded portion 62b has an end edge 62b1 in the longitudinal direction (Y direction), the peripheral edge We of the waist opening WO, and the back side portion B side of the absorbent main body 5. It extends to the vicinity of the central part between the edges of the.
As described above, the lengths of the folded portions 62a and 62b in the longitudinal direction (Y direction) are shorter than the lengths of the folded portions 61a and 61b in the longitudinal direction (Y direction).

腹側部Ａ及び背側部Ｂそれぞれの幅方向の中央部においては、図２に示すように、内層シート６２と、外層シート６１の折り返し部６１ａとの間に、吸収性本体５の長手方向（Ｙ方向）の端部が挟持固定されている。また、腹側部Ａ及び背側部Ｂそれぞれの幅方向の全幅に亘って折り返し部６２ａ，６２ｂの長手方向（Ｙ方向）の長さは同じ（実質的に同じ）である。   As shown in FIG. 2, the longitudinal direction of the absorbent main body 5 is located between the inner layer sheet 62 and the folded portion 61 a of the outer layer sheet 61 at the center in the width direction of each of the ventral side A and the back side B. The end in the (Y direction) is clamped and fixed. The lengths in the longitudinal direction (Y direction) of the folded portions 62a and 62b are the same (substantially the same) over the entire width in the width direction of each of the ventral portion A and the back portion B.

おむつ１においては、図３（ａ）に示すように、腹側部Ａの側縁部６ａは、長手方向（Ｙ方向）に、外層シート６１、内層シート６２、折り返し部６１ａ及び折り返し部６２ａが積層されたシートの積層枚数が４枚の領域６ａ１と、外層シート６１、内層シート６２及び折り返し部６１ａが積層されたシートの積層枚数が３枚の領域６ａ２と、外層シート６１及び内層シート６２が積層されたシートの積層枚数が２枚の領域６ａ３とを有している。腹側部Ｂの側縁部６ｂも同様であり、図３（ｂ）に示すように、長手方向（Ｙ方向）に、外層シート６１、内層シート６２、折り返し部６１ｂ及び折り返し部６２ｂが積層されたシートの積層枚数が４枚の領域６ｂ１と、外層シート６１、内層シート６２及び折り返し部６１ｂが積層されたシートの積層枚数が３枚の領域６ｂ２と、外層シート６１及び内層シート６２が積層されたシートの積層枚数が２枚の領域６ｂ３とを有している。   In the diaper 1, as shown in FIG. 3A, the side edge 6 a of the ventral side A includes an outer layer sheet 61, an inner layer sheet 62, a folded portion 61 a, and a folded portion 62 a in the longitudinal direction (Y direction). A region 6a1 in which the number of stacked sheets is four, a region 6a2 in which the number of stacked sheets of the outer layer sheet 61, the inner layer sheet 62, and the folded portion 61a is three, and the outer layer sheet 61 and the inner layer sheet 62 are There are two regions 6a3 in which the number of stacked sheets is two. The same applies to the side edge portion 6b of the ventral side portion B. As shown in FIG. 3B, the outer layer sheet 61, the inner layer sheet 62, the folded portion 61b, and the folded portion 62b are laminated in the longitudinal direction (Y direction). A region 6b1 in which the number of stacked sheets is four, a region 6b2 in which the number of stacked sheets of the outer layer sheet 61, the inner layer sheet 62, and the folded portion 61b is three, and the outer layer sheet 61 and the inner layer sheet 62 are stacked. A region 6b3 in which the number of stacked sheets is two is provided.

そして、側縁部６ａと側縁部６ｂとを重ね合わせた重合部７は、領域６ａ１と領域６ｂ１とを重ね合わせたシートの積層枚数が８枚の領域７１と、領域６ａ２と領域６ｂ２とを重ね合わせたシートの積層枚数が６枚の領域７２と、領域６ａ３と領域６ｂ３とを重ね合わせたシートの積層枚数が４枚の領域７３を有している。
おむつ１のサイドシール部８は、このような構成を有する重合部７を融着することにより形成されている。 Then, the overlapping portion 7 in which the side edge portion 6a and the side edge portion 6b are overlapped includes the region 71 in which the number of stacked sheets in which the region 6a1 and the region 6b1 are overlapped is the region 71, and the region 6a2 and the region 6b2. A region 72 having six sheets of stacked sheets and a region 73 having four sheets stacked by overlapping the regions 6a3 and 6b3 are provided.
The side seal portion 8 of the diaper 1 is formed by fusing the overlapping portion 7 having such a configuration.

おむつ１におけるサイドシール部８は、図３（ｃ）に示すように、ウエスト開口部ＷＯ側の端部側からレッグ開口部ＬＯ側の端部に向かって、第１シール領域８１、第２シール領域８２（他のシール領域の一つ）及び第３シール領域８３（他のシール領域の他の一つ）をこの順に有している。
第１シール領域８１には、サイドシール部８の長手方向（Ｙ方向）の長さｄ１が互いに同じである複数（図示例では５本）の融着部８１’が該長手方向（Ｙ方向）に一定のピッチＰ１で配置されている。ここで、ピッチとは、サイドシール部の長手方向において、隣接する融着部それぞれの中央位置間の距離である。 As shown in FIG. 3C, the side seal portion 8 in the diaper 1 includes a first seal region 81 and a second seal from an end portion on the waist opening WO side toward an end portion on the leg opening LO side. A region 82 (one of the other seal regions) and a third seal region 83 (the other one of the other seal regions) are provided in this order.
In the first seal region 81, a plurality of (five in the illustrated example) fused portions 81 ′ having the same length d1 in the longitudinal direction (Y direction) of the side seal portion 8 are provided in the longitudinal direction (Y direction). Are arranged at a constant pitch P1. Here, the pitch is a distance between the center positions of the adjacent fused portions in the longitudinal direction of the side seal portion.

第２シール領域８２にも、サイドシール部８の長手方向（Ｙ方向）の長さｄ２が互いに同じである複数（図示例では１０本）の融着部８２’が該長手方向（Ｙ方向）に一定のピッチＰ２で配置されている。ただし、融着部８２’の長手方向（Ｙ方向）の長さｄ２は、第１シール領域８１における融着部８１’の長さｄ１とは異なっている。具体的には、融着部８２’の長さｄ２は、融着部８１’の長さｄ１よりも長くなっている。
また、第３シール領域８３にも、サイドシール部８の長手方向（Ｙ方向）の長さｄ３が互いに同じである複数（図示例では５本）の融着部８３’が該長手方向（Ｙ方向）に一定のピッチＰ３で配置されている。ただし、融着部８３’の長手方向（Ｙ方向）の長さｄ３は、第１シール領域８１における融着部８１’の長さｄ１とは異なっており、第２シール領域８２における融着部８２’の長さｄ２とも異なっている。具体的には、融着部８３’の長さｄ３は、融着部８１’の長さｄ１及び融着部８２’の長さｄ２の何れよりも長くなっている。 Also in the second seal region 82, a plurality (10 in the illustrated example) of fused portions 82 ′ having the same length d2 in the longitudinal direction (Y direction) of the side seal portion 8 are provided in the longitudinal direction (Y direction). Are arranged at a constant pitch P2. However, the length d2 in the longitudinal direction (Y direction) of the fused portion 82 ′ is different from the length d1 of the fused portion 81 ′ in the first seal region 81. Specifically, the length d2 of the fused part 82 ′ is longer than the length d1 of the fused part 81 ′.
Further, in the third seal region 83, a plurality of (five in the illustrated example) fused portions 83 ′ having the same length d3 in the longitudinal direction (Y direction) of the side seal portion 8 are also provided in the longitudinal direction (Y In the direction) at a constant pitch P3. However, the length d3 in the longitudinal direction (Y direction) of the fused portion 83 ′ is different from the length d1 of the fused portion 81 ′ in the first seal region 81, and the fused portion in the second seal region 82. It is also different from the length d2 of 82 ′. Specifically, the length d3 of the fused part 83 ′ is longer than both the length d1 of the fused part 81 ′ and the length d2 of the fused part 82 ′.

第１シール領域８１は、図１及び図３（ｃ）に示すように、サイドシール部８におけるウエスト開口部ＷＯ側の端部に形成されている。また、上述したように、第１シール領域８１における融着部８１’の長さｄ１は、他のシール領域である第２及び第３シール領域それぞれにおける融着部８２’，８３’の長さｄ２，ｄ３より短くなっている。   As shown in FIGS. 1 and 3C, the first seal region 81 is formed at the end of the side seal portion 8 on the side of the waist opening WO. Further, as described above, the length d1 of the fused portion 81 ′ in the first seal region 81 is the length of the fused portions 82 ′ and 83 ′ in the second and third seal regions, which are other seal regions. It is shorter than d2 and d3.

おむつ１におけるサイドシール部８は、上述したように、ウエスト開口部ＷＯ側の端部に、上記構成の第１シール領域８１を有するため、サイドシール部による違和感や肌への刺激が生じにくく、装着感に優れている。
即ち、着用時において、特に乳幼児のウエスト端部領域に相当する部位は、おむつが当接される他の部位と比較して周長が大きく、また立ち/座りといった動作および、呼吸、食事の前後でその周長の変化も大きいため、おむつ自体の柔らかさの影響を最も受けやすい領域であり、その領域が柔らかいことがとても重要である。また、ウエスト端部領域は介護者（母親等）がおむつをはかせる際、手を入れて広げる部位でもあるため、その領域が柔らかいことは、着用者のみならず、介護者の肌への影響（触感）をも向上できるといった利点を有する。 As described above, the side seal portion 8 in the diaper 1 has the first seal region 81 having the above-described configuration at the end portion on the waist opening WO side, so that it is difficult for the side seal portion to cause discomfort and irritation to the skin. Excellent wearing feeling.
In other words, when wearing, the part corresponding to the infant's waist end region has a larger circumference than other parts where the diaper comes into contact with, and the operation such as standing / sitting, and before and after breathing and eating. Since the circumference of the diaper itself is also greatly changed, it is an area most susceptible to the softness of the diaper itself, and it is very important that the area is soft. The waist end area is also a part where a caregiver (mother, etc.) puts his hand on a diaper and widens it, so the softness of the area affects not only the wearer but also the caregiver's skin. (Tactile feeling) can be improved.

また、ウエスト端部領域においてはその良好な風合い、クッション性の観点から極力接着剤を使用しないことが望ましく、その領域に存在する接着剤の量は０〜１０ｇ／ｍ2であることが好ましい。接着剤を用いない方法としては、外層シート、内層シートを弾性体の存在しない部位においてヒートシール、超音波シール等、熱によって部分的に融着させること等が挙げられる。 Further, in the waist end region, it is desirable not to use an adhesive as much as possible from the viewpoint of good texture and cushioning properties, and the amount of the adhesive existing in the region is preferably 0 to 10 g / m 2 . Examples of the method without using an adhesive include partial fusion of the outer layer sheet and the inner layer sheet by heat, such as heat sealing and ultrasonic sealing, at a site where no elastic body is present.

また、おむつ１のサイドシール部８においては、第１シール領域８１の融着部８１’のピッチＰ１と、第２シール領域８２の融着部８２’のピッチＰ２と、第３シール領域８３の融着部８３’の一定のピッチＰ３とが同じである。即ち、第１〜第３の総てのシール領域において、融着部のピッチが同じである。
このように、各領域の融着部のピッチを等しくすることにより、各領域のサイドシール部の融着強度を所望の値にコントロールすることが容易となり、且つ使用時において剥がれの生じない、良好な融着部強度をも得ることができる。 Further, in the side seal portion 8 of the diaper 1, the pitch P 1 of the fusion portion 81 ′ of the first seal region 81, the pitch P 2 of the fusion portion 82 ′ of the second seal region 82, and the third seal region 83 The fixed pitch P3 of the fused part 83 ′ is the same. That is, the pitch of the fused portion is the same in all the first to third seal regions.
Thus, by equalizing the pitch of the fusion part in each region, it becomes easy to control the fusion strength of the side seal part in each region to a desired value, and no peeling occurs during use. It is also possible to obtain a high fusion part strength.

しかも、おむつ１のサイドシール部８においては、第１シール領域８１の融着部８１’と第２シール領域８２の融着部８２’との間のピッチＰ４、及び第２シール領域８２の融着部８２’と第３シール領域８３の融着部８３’との間のピッチＰ５も、前記ピッチＰ１〜Ｐ３と同じであり、その結果、ヒートシール部８の長手方向の全長に亘って同一ピッチで融着部が形成されていることになる。   Moreover, in the side seal portion 8 of the diaper 1, the pitch P 4 between the fusion portion 81 ′ of the first seal region 81 and the fusion portion 82 ′ of the second seal region 82 and the fusion of the second seal region 82. The pitch P5 between the attachment portion 82 ′ and the fusion portion 83 ′ of the third seal region 83 is also the same as the pitch P1 to P3, and as a result, the same over the entire length of the heat seal portion 8 in the longitudinal direction. The fused part is formed at the pitch.

また、第１シール領域８１における融着部８１’は、図３（ｃ）に示すように、領域６ａ１と領域６ｂ１とを重ね合わせたシートの積層枚数が最大の領域７１を融着している。
一般的に重合部７を形成する部材数が多くなると、融着樹脂量がそれに伴い増加するため、その部分を強固に融着して熱による樹脂化がなされると、その部分における硬さが増大し、おむつ１を、履かせようとしてウエスト開口部を拡げた際や、装着時に、その硬くなった部分が、ウエスト周りや手、脚等における肌に当たり、刺激を与える恐れがある。
本実施形態のおむつ１においては、サイドシール部８を、上述した第１〜第３シール領域が生じるように融着しているため、シートの積層枚数が最大の領域７１における融着部は第１シール領域８１となる。そのため、装着の際や装着中に、サイドシール部が着用者に違和感を与えたり、サイドシール部の硬くなった部分が、着用者や介護者の肌へ悪影響を与えることを防止することができる。おむつ１は、上述したように、ウエスト開口部ＷＯ側の端部に、シートの積層枚数が最大の端部領域７１を有しており、ウエスト端部領域７１における腹側部及び背側部それぞれのシートの積層構造が、腹側部の重合部同士間７１ａ及び背側部の重合部７１ｂ同士間にも延在しているため、着用者のウエスト周り周囲全体に当接する部分のクッション性ないし感触が良好である。 Further, as shown in FIG. 3C, the fused portion 81 ′ in the first seal area 81 is fused in the area 71 having the maximum number of stacked sheets obtained by overlapping the areas 6a1 and 6b1. .
In general, when the number of members forming the polymerized portion 7 increases, the amount of the fusion resin increases accordingly. Therefore, when the portion is firmly fused and resinized by heat, the hardness of the portion is reduced. When the waist opening is widened to try to put on the diaper 1 or when the diaper 1 is worn or worn, the hardened portion may hit the skin around the waist, hands, legs, etc., and may cause irritation.
In the diaper 1 of the present embodiment, the side seal portion 8 is fused so that the above-described first to third seal regions are generated, and therefore the fused portion in the region 71 where the number of stacked sheets is maximum is the first. One seal region 81 is formed. Therefore, it is possible to prevent the side seal part from giving a strange feeling to the wearer during wearing or during wearing, or the hardened part of the side seal part from adversely affecting the skin of the wearer or caregiver. . As described above, the diaper 1 has the end region 71 having the largest number of stacked sheets at the end on the waist opening WO side, and the abdomen and back sides of the waist end region 71 respectively. Since the laminated structure of the sheets also extends between the overlapping portions 71a on the abdominal side and between the overlapping portions 71b on the back side, the cushioning property of the portion that contacts the entire circumference around the waist of the wearer Good feel.

シートの積層枚数が最大の部分７１は、ウエスト開口部ＷＯ側の端縁Ｗｅから下端（６２ａ１，６２ｂ１の位置）までの距離Ｌ１’が、３〜３０ｍｍであることが好ましく、より好ましくは５〜２５ｍｍ、更に好ましくは１０〜２０ｍｍである。   In the portion 71 having the largest number of laminated sheets, the distance L1 ′ from the edge We on the waist opening WO side to the lower end (positions 62a1 and 62b1) is preferably 3 to 30 mm, more preferably 5 to 5 mm. It is 25 mm, more preferably 10 to 20 mm.

本実施形態のおむつ１において、第１シール領域８１における融着部８１’の長さｄ１は、０．３〜２．０ｍｍであることが好ましく、特に０．５〜１．５ｍｍであることが好ましい。また、第１シール領域８１における融着部８１’のピッチＰ１は、０．５〜３．０ｍｍ、特に１．０〜２．５ｍｍであることが好ましい。   In the diaper 1 of the present embodiment, the length d1 of the fused portion 81 ′ in the first seal region 81 is preferably 0.3 to 2.0 mm, and particularly preferably 0.5 to 1.5 mm. preferable. Further, the pitch P1 of the fused portion 81 'in the first seal region 81 is preferably 0.5 to 3.0 mm, particularly preferably 1.0 to 2.5 mm.

また、第１シール領域８１は、サイドシール部８のウエスト開口部ＷＯの端部に、柔軟な領域を形成して、お腹周りの周長の変動が大きく、特に着用時の違和感を最も感じやすいウエスト端部領域をやわらかくし、且つ介護者の肌へ悪影響を与えることを防止する観点および、着用時における不意なはがれを防止する観点から、サイドシール部８の長手方向に沿う方向（Ｙ方向）における長さＬ１が、３〜３０ｍｍであることが好ましく、より好ましくは５〜２５ｍｍ、更に好ましくは１０〜２０ｍｍである。また、第１シール領域８１に存する融着部８１’の個数は、２〜３０個、特に５〜２０個程度であることが好ましい。   In addition, the first seal region 81 forms a flexible region at the end of the waist opening WO of the side seal portion 8, so that the circumference of the abdomen is greatly fluctuated, and it is most likely to feel a sense of incongruity particularly when worn. A direction along the longitudinal direction of the side seal portion 8 (Y direction) from the viewpoint of softening the waist end area and preventing adverse effects on the skin of the caregiver and preventing unexpected peeling at the time of wearing. It is preferable that length L1 in is 3-30 mm, More preferably, it is 5-25 mm, More preferably, it is 10-20 mm. In addition, the number of fused portions 81 ′ existing in the first seal region 81 is preferably 2 to 30, particularly about 5 to 20.

本実施形態のおむつ１において、第２シール領域８２における融着部８２’の長さｄ２は、０．５〜２．５ｍｍであることが好ましく、特に０．５〜２．０ｍｍであることが好ましい。また、第２シール領域８２における融着部８２’のピッチＰ２は、０．５〜３．０ｍｍ、特に１．０〜２．５ｍｍであることが好ましい。第２シール領域８２の融着部８２’の長さｄ２と第１シール領域８１の融着部８１’の長さｄ１との比（前者／後者）は、１．１〜６．０、特に１．１〜５．０であることが好ましい。第２シール領域８２の前記ピッチＰ２と第１シール領域８１の前記ピッチＰ１との比（Ｐ２／Ｐ１）は、０．５〜５．０、特に０．７〜３．０であることが好ましい。   In the diaper 1 of the present embodiment, the length d2 of the fused portion 82 ′ in the second seal region 82 is preferably 0.5 to 2.5 mm, and particularly preferably 0.5 to 2.0 mm. preferable. In addition, the pitch P2 of the fused portions 82 'in the second seal region 82 is preferably 0.5 to 3.0 mm, particularly preferably 1.0 to 2.5 mm. The ratio (the former / the latter) of the length d2 of the fused portion 82 ′ of the second seal region 82 to the length d1 of the fused portion 81 ′ of the first seal region 81 is 1.1 to 6.0, particularly It is preferable that it is 1.1-5.0. The ratio (P2 / P1) between the pitch P2 of the second seal region 82 and the pitch P1 of the first seal region 81 is preferably 0.5 to 5.0, particularly 0.7 to 3.0. .

また、本実施形態のおむつ１において、第３シール領域８３における融着部８３’の長さｄ３は、１．０〜４．０ｍｍであることが好ましく、特に１．５〜３．０ｍｍであることが好ましい。また、第３シール領域８３における融着部８３’のピッチＰ３は、１．５〜４．５ｍｍ、特に２．０〜４．０ｍｍであることが好ましい。第３シール領域８３の融着部８３’の長さｄ３と第１シール領域８１の融着部８１’の長さｄ１との比（前者／後者）は、１．１〜６．０、特に１．１〜５．０であることが好ましい。第３シール領域８３の前記ピッチＰ３と第１シール領域８１の前記ピッチＰ１との比（前者／後者）は、０．５〜５．０、特に０．７〜３．０であることが好ましい。   In the diaper 1 of the present embodiment, the length d3 of the fused portion 83 ′ in the third seal region 83 is preferably 1.0 to 4.0 mm, particularly 1.5 to 3.0 mm. It is preferable. In addition, the pitch P3 of the fused portion 83 'in the third seal region 83 is preferably 1.5 to 4.5 mm, particularly 2.0 to 4.0 mm. The ratio (the former / the latter) of the length d3 of the fused portion 83 ′ of the third seal region 83 to the length d1 of the fused portion 81 ′ of the first seal region 81 is 1.1 to 6.0, particularly It is preferable that it is 1.1-5.0. The ratio of the pitch P3 of the third seal region 83 to the pitch P1 of the first seal region 81 (the former / the latter) is preferably 0.5 to 5.0, particularly 0.7 to 3.0. .

また、第３シール領域８３の融着部８３’の長さｄ３は、第２シール領域８２の融着部８２’の長さｄ２よりも長いことが好ましい。レッグ開口部側の端部に形成された第３シール領域８３の融着部８３’の長さｄ３を、第１シール領域８１と第３シール領域８３との間に形成された第２シール領域８２の融着部８２’の長さｄ２よりも長くすることで、シール処理を行う際、他の領域より多くの熱量を該領域に与えることができる。第３シール領域８３は、図３（ｃ）に示す領域７３、即ち図３（ａ）における領域６ａ３と図３（ｂ）における領域６ｂ３とが重合された領域を融着している。領域６ａ３（６ｂ３）は他の領域６ａ１，６ａ２（６ｂ１，６ｂ２）と比して、構成シート数が少なく〔図３（ａ）に示す例においては２枚〕、融着樹脂量が少ないため、融着強度が低くなる。上述のように第３シール領域の融着部長さｄ３を長くすることにより、他の領域と同等程度の融着強度を得ることができる。第３シール領域８３の融着部８３’の長さｄ３と第２シール領域８２の融着部８２’の長さｄ２の比（前者／後者）は、例えば、１．１〜６．０、特に１．１〜５．０とすることが好ましい。また、第３シール領域８３の前記ピッチＰ３と第２シール領域８１の前記ピッチＰ２との比（前者／後者）は、０．５〜５．０、特に０．７〜３．０であることが好ましい。なお、図３（ｃ）に示すように、本実施形態においては、重合部７における前記領域７１と第１シール領域８１とで、サイドシール部の長手方向の範囲が重複するが完全には一致しておらず、また、重合部７における前記領域７３と第３シール領域８３とで、サイドシール部の長手方向の範囲が重複するが完全には一致していないが、領域７１と第１シール領域８１、及び／又は領域７３と第３シール領域８３は、サイドシール部の長手方向における存在範囲がほぼ一致していることも好ましい。   Further, the length d3 of the fused portion 83 'in the third seal region 83 is preferably longer than the length d2 of the fused portion 82' in the second seal region 82. The length d3 of the fused portion 83 ′ of the third seal region 83 formed at the end on the leg opening side is set to the second seal region formed between the first seal region 81 and the third seal region 83. By making it longer than the length d2 of the fused portion 82 ′ of 82, when performing the sealing process, a larger amount of heat can be given to the region. The third seal region 83 fuses the region 73 shown in FIG. 3C, that is, the region where the region 6a3 in FIG. 3A and the region 6b3 in FIG. The region 6a3 (6b3) has a smaller number of constituent sheets than the other regions 6a1, 6a2 (6b1, 6b2) (two in the example shown in FIG. 3A), and the amount of the fusion resin is small. The fusion strength is lowered. As described above, by increasing the fusion part length d3 of the third seal region, it is possible to obtain a fusion strength equivalent to that of the other regions. The ratio (former / latter) of the length d3 of the fused portion 83 ′ of the third seal region 83 to the length d2 of the fused portion 82 ′ of the second seal region 82 is, for example, 1.1 to 6.0, In particular, 1.1 to 5.0 is preferable. The ratio (the former / the latter) of the pitch P3 of the third seal region 83 and the pitch P2 of the second seal region 81 is 0.5 to 5.0, particularly 0.7 to 3.0. Is preferred. As shown in FIG. 3C, in this embodiment, the region 71 in the overlapping portion 7 and the first seal region 81 overlap in the longitudinal range of the side seal portion. Further, the region 73 and the third seal region 83 in the overlapping portion 7 overlap with each other in the longitudinal direction of the side seal portion but are not completely coincident with each other. It is also preferred that the region 81 and / or the region 73 and the third seal region 83 have substantially the same existence range in the longitudinal direction of the side seal portion.

サイドシール部８の融着方法としては、ヒートエンボス、超音波エンボス、高周波エンボス等が用いられ、おむつ１においては、サイドシール部８の形成に、図４に示すように、一対の超音波エンボスロール８０ａ，８０ｂが用いられている。
具体的には、図３（ｃ）に示すサイドシール部８の形状に対応するように形成された凸部８０を備えたエンボスロール８０ａと、表面がフラットなフラットロール８０ｂとの間に、帯状のおむつ１の連続体を通し、側縁部６ａと側縁部６ｂとを重ね合わせた重合部７の位置で、凸部８０及びフラットロール８０ｂによってエンボスすることにより、サイドシール部８を形成する。凸部８０は、帯状のおむつ１の連続体の流れ方向と直交する方向と、図３（ｃ）に示すサイドシール部８の長手方向（Ｙ方向）とが対応するように、流れ方向と直交する方向に、シール領域８ａ１、シール領域８ａ２及びシール領域８ａ３それぞれの融着部８１’に対応する小凸部を有している。そのため、一つのサイドシール部８を一回のエンボス加工により形成することができる。 As a method for fusing the side seal portion 8, heat embossing, ultrasonic embossing, high frequency embossing or the like is used. In the diaper 1, a pair of ultrasonic embossing is used to form the side seal portion 8 as shown in FIG. Rolls 80a and 80b are used.
Specifically, a belt-like shape is formed between an embossing roll 80a having a convex portion 80 formed so as to correspond to the shape of the side seal portion 8 shown in FIG. 3C and a flat roll 80b having a flat surface. The side seal portion 8 is formed by embossing with the convex portion 80 and the flat roll 80b at the position of the overlapping portion 7 where the side edge portion 6a and the side edge portion 6b are overlapped through the diaper 1 continuous body. . The convex portion 80 is orthogonal to the flow direction so that the direction orthogonal to the flow direction of the continuous body of the strip-shaped diaper 1 corresponds to the longitudinal direction (Y direction) of the side seal portion 8 shown in FIG. In this direction, there are small convex portions corresponding to the fused portions 81 ′ of the seal region 8a1, the seal region 8a2, and the seal region 8a3. Therefore, one side seal part 8 can be formed by one embossing.

サイドシール部８における融着部８１’〜８３’は、凸部８０の小凸部によってエンボスされた部分であり、それによって、腹側部Ａの側縁部と背側部Ｂの側縁部の相対向面が融着された部分である。融着部８１’〜８３’は、通常、エンボス処理によりフィルム化しており、サイドシール部８において、腹側部Ａ又は背側部Ｂ側からの表面からの深さが最も深くなっている。尚、サイドシール部８が、胴回り部弾性部材６３等により、幅方向（Ｘ方向）等に収縮している場合には、伸張した状態で、融着部８１’〜８３’の長さｄ１，ｄ２，ｄ３やピッチＰ１〜Ｐ３を測定する。   The fused portions 81 ′ to 83 ′ in the side seal portion 8 are portions embossed by the small convex portions of the convex portion 80, and thereby the side edge portions of the ventral side portion A and the back side portion B. This is a portion where the opposing surfaces of the two are fused. The fused portions 81 ′ to 83 ′ are usually formed into a film by an embossing process, and the side seal portion 8 has the deepest depth from the surface from the ventral side A or the back side B side. When the side seal portion 8 is contracted in the width direction (X direction) or the like by the waistline elastic member 63 or the like, the lengths d1 and f1 of the fused portions 81 ′ to 83 ′ are expanded. d2 and d3 and pitches P1 to P3 are measured.

サイドシール部８は、ウエスト開口部ＷＯ側の端部に位置する第１シール領域８１における融着強度が、第１シール領域８１より下方に位置する第２及び第３シール領域８２，８３それぞれの融着強度よりも低いことが好ましい。   The side seal portion 8 has a fusion strength in the first seal region 81 located at the end on the waist opening WO side, in each of the second and third seal regions 82 and 83 located below the first seal region 81. It is preferably lower than the fusion strength.

サイドシール部８の融着強度は、高い程、着用者の肌に硬さを感じさせ易くなる傾向がある。
ウエスト開口部ＷＯ側の端部に位置する第１シール領域８１における融着強度を、それより下方に位置するシール領域８２，８３における融着強度よりも低くすることにより、おむつ自体の柔らかさの影響を最も受けやすいウエスト端部領域をやわらかくすることができる。また、廃棄時において融着部を剥がす際、大きな力を必要としない。更に、不慮の事態において万が一ウエスト端部領域が剥がれるようなことが生じても、それより下方に位置するシール領域は該領域より融着強度が高くなっているためおむつのズリ落ち、排泄物のモレ等の大きな不具合は生じない。 The higher the fusion strength of the side seal portion 8, the more easily the hardness of the wearer's skin tends to be felt.
By making the fusion strength in the first seal region 81 located at the end of the waist opening WO side lower than the fusion strength in the seal regions 82 and 83 located below the first seal region 81, the softness of the diaper itself can be reduced. It is possible to soften the waist end area most susceptible to the influence. Moreover, when peeling a fused part at the time of disposal, a big force is not required. Furthermore, even if the waist end region is peeled off in an unforeseen situation, the seal region located below it has a higher fusion strength than the region, causing the diaper to slip off and excrement. No major problems such as leakage occur.

このような観点から、第１シール領域８１における融着強度は、０．３〜３Ｎ／５ｍｍ、特に０．３〜４．０Ｎ／５ｍｍであることが好ましく、それより下方に位置するシール領域（第２及び第３シール領域）８２，８３の融着強度は２〜６Ｎ／５ｍｍ、特に２．５〜５Ｎ／５ｍｍであることが好ましく、前者と後者の比（前者／後者）は、０．２〜０．９、特に０．３〜０．６であることが好ましい。   From such a viewpoint, the fusion strength in the first seal region 81 is preferably 0.3 to 3 N / 5 mm, and particularly preferably 0.3 to 4.0 N / 5 mm, and the seal region ( The fusion strength of the second and third seal regions) 82 and 83 is preferably 2 to 6 N / 5 mm, particularly preferably 2.5 to 5 N / 5 mm, and the ratio of the former to the latter (the former / the latter) is 0. It is preferable that it is 2-0.9, especially 0.3-0.6.

＜融着強度の測定方法＞
おむつ１からサイドシール部８をおむつ１の長手方向（Ｙ方向）に沿って切り取る。この切り取りの際には、腹側部Ａ及び背側部Ｂそれぞれにおける、サイドシール部８より中心線ＣＬ側に位置する部分が３０ｍｍ程度含まれるようにする。
次に、切り取ったサイドシール部８をシール領域８ａ１、シール領域８ａ２及びシール領域８ａ３の部分で幅方向（Ｘ方向）にカットし、長手方向（Ｙ方向）のシール部８の長さがそれぞれ５ｍｍの、シール領域８ａ１のサンプル、シール領域８ａ２のサンプル及びシール領域８ａのサンプルを得る。
各領域のシール強度を引張試験機〔商品名 オートグラフＡＧＳ５０Ａ （株）島津製作所製〕にて測定する。この測定の際には、各サンプルにおける、サイドシール部８より中心線ＣＬ側に位置していた腹側部に由来する部分と背側部に由来する部分とを、それぞれチャックに挟んで、１８０度反対方向に引っ張る（Ｔ字剥離）。
その際、引張速度（チャック間距離の拡大速度）３００ｍｍ／ｍｉｎで測定を行い、最大強度を求める。測定はｎ＝５回行い、その平均値にてその領域の融着強度とする。尚、各領域のシール部の長さが５ｍｍ取れない場合には、５ｍｍに近い最大の幅にて測定を行い、５ｍｍの幅に換算することにより融着強度を求める。サンプルのサイドシール部８を剥離させる際の剥離の進行方向は、サイドシール部８の幅方向と同方向（Ｘ方向）である <Measurement method of fusion strength>
The side seal portion 8 is cut from the diaper 1 along the longitudinal direction (Y direction) of the diaper 1. At the time of this cutting, the portion located on the center line CL side from the side seal portion 8 in each of the ventral side portion A and the back side portion B is included about 30 mm.
Next, the cut side seal portion 8 is cut in the width direction (X direction) at the seal region 8a1, seal region 8a2, and seal region 8a3, and the length of the seal portion 8 in the longitudinal direction (Y direction) is 5 mm. The sample of the seal region 8a1, the sample of the seal region 8a2, and the sample of the seal region 8a are obtained.
The seal strength of each region is measured with a tensile tester [trade name: Autograph AGS50A, manufactured by Shimadzu Corporation]. In this measurement, a portion derived from the abdominal side portion and a portion derived from the back side portion, which were located on the center line CL side from the side seal portion 8 in each sample, were sandwiched between chucks, respectively. Pull in the opposite direction (T-peeling).
At that time, measurement is performed at a tensile speed (enlargement speed of the distance between chucks) of 300 mm / min to obtain the maximum strength. The measurement is performed n = 5 times, and the average value is used as the fusion strength of the region. In addition, when the length of the seal part of each area | region cannot take 5 mm, it measures by the maximum width | variety close | similar to 5 mm, and calculates | requires fusion strength by converting into the width of 5 mm. When the sample side seal portion 8 is peeled off, the direction of peeling is the same as the width direction of the side seal portion 8 (X direction).

吸収性本体５は、図２に示すように、液透過性の表面シート２、液不透過性又は撥水性の裏面シート３及び両シート２、３間に介在された液保持性の吸収体４を有しており、実質的に縦長である。吸収性本体５は、図２に示すように、外包材６の背側部Ｂから腹側部Ａに亘って配設されており、吸収性本体５の長手方向（Ｙ方向）両端部は、外包材６の長手方向（Ｙ方向）両端部よりも長手方向（Ｙ方向）内方に後退した位置にある。吸収性本体５は、接着剤、ヒートシール、超音波シール等による接合法によって外包材６の内層シート６２に接合されている。   As shown in FIG. 2, the absorbent main body 5 includes a liquid-permeable top sheet 2, a liquid-impermeable or water-repellent back sheet 3, and a liquid-retaining absorbent body 4 interposed between both sheets 2 and 3. And is substantially vertically long. As shown in FIG. 2, the absorbent main body 5 is disposed from the back side portion B to the ventral side portion A of the outer packaging material 6, and both ends of the longitudinal direction (Y direction) of the absorbent main body 5 are The outer packaging material 6 is in a position retracted inward in the longitudinal direction (Y direction) from both ends in the longitudinal direction (Y direction). The absorptive main body 5 is joined to the inner layer sheet 62 of the outer packaging material 6 by a joining method using an adhesive, heat sealing, ultrasonic sealing or the like.

吸収性本体５の長手方向（Ｙ方向）両側部には、図２に示すように、液抵抗性又は撥水性の素材で且つ通気性の素材から構成された側方カフス５１，５１が設けられている。各側方カフス５１の自由端部近傍には、側方カフス形成用の弾性部材５２が長手方向（Ｙ方向）に伸長した状態で配設固定されている。側方カフス５１は、おむつの装着時に自由端部側が起立し、吸収性本体５の幅方向（Ｘ方向）への排泄物の流出を阻止することができる。側方カフス５１形成用シートは、吸収性本体５の幅方向（Ｘ方向）外方側の所定幅の部分が、非肌当接面側に巻き込まれて、固定されている。   As shown in FIG. 2, side cuffs 51, 51 made of a liquid-resistant or water-repellent material and a breathable material are provided on both sides in the longitudinal direction (Y direction) of the absorbent main body 5. ing. In the vicinity of the free end portion of each side cuff 51, an elastic member 52 for forming the side cuff is disposed and fixed in a state of extending in the longitudinal direction (Y direction). The side cuffs 51 stand up at the free end when the diaper is worn, and can prevent excrement from flowing out in the width direction (X direction) of the absorbent main body 5. In the side cuff 51 forming sheet, a portion having a predetermined width on the outer side in the width direction (X direction) of the absorbent main body 5 is wound around the non-skin contact surface side and fixed.

上述したおむつ１の形成材料について説明する。
重合部７を構成するシート状の部材の融着成分は、ポリプロピレン、ポリエチレン又はポリエステル等の汎用の樹脂からなることがコスト的にも好ましいが、重合部７を構成する部材の融着成分同士が同系列の成分であることが好ましい。おむつ１においては、重合部７を構成する部材は、外層シート６１（折り返し部６１ａを含む）及び内層シート６２（折り返し部６２ａを含む）である。従って、外層シート６１及び内層シート６２が、互いに同系列の成分であることが好ましい。外層シート６１及び内層シート６２を構成する融着成分がポリプロピレンの同系列の成分であるとは、例えば、ポリプロピレン単体のホモＰＰ繊維のみから形成された不織布シート、少量のエチレン等がプロピレン連鎖中にランダムに取り込まれたランダムＰＰ繊維のみから形成された不織布シート、ホモＰＰ樹脂又はランダムＰＰ樹脂を５０％以上含むが、ホモＰＰ樹脂又はランダムＰＰ樹脂以外の熱可塑性樹脂（例えばポリエチレン樹脂、ポリエステル樹脂等）を混合した芯鞘型複合繊維やサイドバイサイド型複合繊維から形成された不織布シート、ホモＰＰ繊維又はランダムＰＰ繊維を５０％以上含むが、ホモＰＰ繊維又はランダムＰＰ繊維以外の繊維（例えばレーヨン繊維、コットン繊維、ポリエチレン繊維、ポリエステル繊維等）を混綿した繊維から形成された不織布シート等が挙げられる。 The formation material of the diaper 1 mentioned above is demonstrated.
The fusion component of the sheet-like member constituting the polymerization part 7 is preferably made of a general-purpose resin such as polypropylene, polyethylene or polyester, but the fusion component of the member constituting the polymerization part 7 The same series of components is preferred. In the diaper 1, the members constituting the overlapping portion 7 are the outer layer sheet 61 (including the folded portion 61a) and the inner layer sheet 62 (including the folded portion 62a). Therefore, it is preferable that the outer layer sheet 61 and the inner layer sheet 62 are components of the same series. The fusion component constituting the outer layer sheet 61 and the inner layer sheet 62 is a component of the same series of polypropylene, for example, a non-woven sheet formed from only polypropylene PP homopolypropylene, and a small amount of ethylene in the propylene chain. 50% or more of non-woven sheet, homo PP resin or random PP resin formed only from random PP fibers taken at random, but thermoplastic resin other than homo PP resin or random PP resin (for example, polyethylene resin, polyester resin, etc.) 50% or more of a non-woven sheet, a homo PP fiber or a random PP fiber formed from a core-sheath type composite fiber or a side-by-side type composite fiber mixed with a non-homo PP fiber or a random PP fiber (for example, rayon fiber, Cotton fiber, polyethylene fiber, polyester fiber, etc.) Nonwoven sheets made from cotton mixing the fibers.

外層シート６１及び内層シート６２を構成する融着成分がポリエチレン又はポリエステルと同系列の成分であるとは、ポリプロピレンの同系列の成分と同様に解することができる。特に、ポリエチレンと同系列の成分であるとは、芯部がポリエステル樹脂で鞘部がポリエチレン樹脂からなる芯鞘型複合繊維やサイドバイサイド型複合繊維、芯部がポリプロピレン樹脂で鞘部がポリエチレン樹脂からなる芯鞘型複合繊維やサイドバイサイド型複合繊維を混綿した繊維から形成された不織布シート等が好ましい。また、特に、ポリエステルと同系列の成分であるとは、芯部がポリエステル樹脂で鞘部が低融点ポリエステル樹脂からなる芯鞘型複合繊維やサイドバイサイド型複合繊維を混綿した繊維から形成された不織布シート等が好ましい。重合部７を構成する部材の融着成分が、ポリプロピレン、ポリエチレン又はポリエステルと同系列の成分であると、融着成分の相溶性が良く、融着強度が良好であるため、より低温で融着することができる。従って、高温でエンボス処理をする必要がないため、エンボス処理された部分以外の部分が硬化することがなく、サイドシール部全体が柔らかくなり、肌触りが向上する。   It can be understood that the fusion component constituting the outer layer sheet 61 and the inner layer sheet 62 is a component of the same series as that of polyethylene or polyester, similarly to the component of the same series of polypropylene. In particular, a component of the same series as polyethylene means that a core-sheath type composite fiber or side-by-side type composite fiber whose core part is made of polyester resin and whose sheath part is made of polyethylene resin, and whose core part is made of polypropylene resin and whose sheath part is made of polyethylene resin. A nonwoven fabric sheet or the like formed from a fiber in which a core-sheath type composite fiber or a side-by-side type composite fiber is mixed is preferable. In particular, a non-woven sheet formed from a fiber in which a core-sheath type composite fiber or a side-by-side type composite fiber in which a core part is made of a polyester resin and a sheath part is made of a low-melting-point polyester resin is a component of the same series as polyester. Etc. are preferred. If the fusion component of the member constituting the polymerized portion 7 is a component of the same series as polypropylene, polyethylene or polyester, the fusion component has good compatibility and good fusion strength. can do. Therefore, since it is not necessary to perform the embossing process at a high temperature, the part other than the embossed part is not cured, the entire side seal part is softened, and the touch is improved.

重合部７の、第１シール領域８１で融着する部分を構成するシート、即ち、おむつ１においては、外層シート６１（折り返し部６１ａを含む）及び内層シート６２（折り返し部６２ａを含む）は、その総てが不織布であることが、柔らかさ、およびコストの観点から好ましい。
また、重合部７の第１シール領域８１で融着する部分を構成するシートの合計坪量、即ち、おむつ１においては、外層シート６１及びその折り返し部６１ａの合計坪量（外層シート６１の坪量×２）と、内層シート６２及びその折り返し部６２ａの合計坪量（内層シート６２の坪量×２）との合計が、クッション性ないし感触の向上の観点から１２０ｇ／ｍ2以上であること、特に１３０ｇ／ｍ2以上であることが好ましい。重合部７の第１シール領域８１で融着する部分を構成するシートの合計坪量は、特に制限されないが、コストの観点からは、２００ｇ／ｍ2以下、特に１８０ｇ／ｍ2以下であることが好ましい。 In the diaper 1, the outer layer sheet 61 (including the folded portion 61 a) and the inner layer sheet 62 (including the folded portion 62 a) in the diaper 1, the sheet constituting the portion to be fused in the first seal region 81 of the overlapping portion 7, It is preferable from the viewpoints of softness and cost that all of them are nonwoven fabrics.
Further, the total basis weight of the sheet constituting the portion to be fused in the first seal region 81 of the overlapping portion 7, that is, in the diaper 1, the total basis weight of the outer layer sheet 61 and the folded portion 61a (the basis weight of the outer layer sheet 61). Amount × 2) and the total basis weight of the inner layer sheet 62 and the folded portion 62a (basis weight × 2 of the inner layer sheet 62) are 120 g / m 2 or more from the viewpoint of improving cushioning or feel. In particular, it is preferably 130 g / m 2 or more. The total basis weight of the sheet constituting the portion to be fused in the first seal region 81 of the overlapping portion 7 is not particularly limited, but is 200 g / m 2 or less, particularly 180 g / m 2 or less from the viewpoint of cost. Is preferred.

＜坪量の測定方法＞
内層シート６２、外層シート６１を各３０ｍｍ×３０ｍｍの大きさに裁断し、一つのおむつから合計面積が各９００ｍｍ2の測定片を採取し、この測定片の重量を最小表示１ｍｇの電子天秤を用いて測定し坪量に換算することで求める。坪量の値は、ｎ＝５のおむつより測定片を採取した平均値である。尚、内層シート６２及び外層シート６１の各測定片は、サイドシール部８以外の部分から採取する。３０ｍｍ×３０ｍｍの大きさの測定片をとることが出来ない場合は、なるべく大きな面積になるようサンプリングを行い、その面積から坪量を換算する。内層シートおよび外層シートがホットメルト等の接着剤にて接合されている場合はクロロホルム等の有機溶媒にて接着剤を洗い流した後、十分に乾燥を行い、重量の測定を行うこととする。 <Measurement method of basis weight>
The inner layer sheet 62 and the outer layer sheet 61 are each cut into a size of 30 mm × 30 mm, a measuring piece having a total area of 900 mm 2 is collected from one diaper, and an electronic balance with a minimum display of 1 mg is used for the weight of the measuring piece. Measured and converted to basis weight. The value of the basis weight is an average value obtained by collecting measurement pieces from n = 5 diapers. Each measurement piece of the inner layer sheet 62 and the outer layer sheet 61 is collected from a portion other than the side seal portion 8. When a measurement piece having a size of 30 mm × 30 mm cannot be taken, sampling is performed so that the area is as large as possible, and the basis weight is converted from the area. When the inner layer sheet and the outer layer sheet are joined with an adhesive such as hot melt, the adhesive is washed away with an organic solvent such as chloroform, and then sufficiently dried and the weight is measured.

表面シート２、裏面シート３、吸収体４、側方カフス５１形成用シートとしては、使い捨ておむつ等の吸収性物品に従来用いられるもの等を特に制限なく用いることができる。例えば、表面シート２としては、液透過性の不織布や、開孔フィルム、これらの積層体等を用いることができ、裏面シート３としては、樹脂フィルムや樹脂フィルムと不織布の積層体等を用いることができる。吸収体４としては、パルプ等の繊維材料の繊維集合体又はこれに高吸収性ポリマーを担持させたものを、ティッシュペーパーや透水性の不織布等の被覆材で包んでなるもの等を用いることができる。側方カフス５１形成用シートとしては、伸縮性のフィルム、不織布、織物またはそれらの積層シート等を用いることができる。   As the surface sheet 2, the back sheet 3, the absorbent body 4, and the side cuff 51 forming sheet, those conventionally used for absorbent articles such as disposable diapers can be used without particular limitation. For example, a liquid-permeable nonwoven fabric, an apertured film, or a laminate of these can be used as the top sheet 2, and a resin film or a laminate of a resin film and a nonwoven fabric can be used as the back sheet 3. Can do. As the absorbent body 4, it is possible to use a fiber aggregate of fiber materials such as pulp or a material in which a superabsorbent polymer is supported and wrapped with a covering material such as tissue paper or a water-permeable nonwoven fabric. it can. As the sheet for forming the side cuffs 51, a stretchable film, a nonwoven fabric, a woven fabric, or a laminated sheet thereof can be used.

側方カフス形成用の弾性部材５２、ウエスト弾性部材６３、レッグ弾性部材６４、胴回り部弾性部材６５としては、使い捨ておむつ等の吸収性物品に従来用いられるもの等を特に制限なく用いることができる。例えば、天然ゴム、ポリウレタン、ポリスチレン−ポリイソプレン共重合体、ポリスチレン−ポリブタジエン共重合体、アクリル酸エチル−エチレン等のポリエチレン−αオレフィン共重合体等からなる伸縮性の材料等を用いることができる。   As the elastic member 52 for forming the side cuff, the waist elastic member 63, the leg elastic member 64, and the waistline elastic member 65, those conventionally used for absorbent articles such as disposable diapers can be used without particular limitation. For example, a stretchable material made of natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, polyethylene-α olefin copolymer such as ethyl acrylate-ethylene, or the like can be used.

以上、本発明の一実施形態であるおむつ１について主として説明したが、本発明のパンツ型吸収性物品は、上述のおむつ１に何ら制限されるものではなく、適宜変更可能である。   As mentioned above, although the diaper 1 which is one embodiment of this invention was mainly demonstrated, the underpants type absorbent article of this invention is not restrict | limited to the above-mentioned diaper 1 at all, and can be changed suitably.

例えば、上述したおむつ１においては、第１〜第３の総てのシール領域８１〜８３において、融着部８１’のピッチが同じであったが、図５に示すように、第１シール領域８１及び第２シール領域８２における融着部のピッチＰ１，Ｐ２を同じとする一方、第３シール領域８３の融着部８３’のピッチＰ３を、前記ピッチＰ１，Ｐ２よりも大きくしても良い。例えば、ピッチＰ１，Ｐ２を０．５〜２．０ｍｍとしたとき、ピッチＰ３は、ピッチＰ１，Ｐ２の１．２〜４．０倍とすることができる。
また、第２シール領域８２における融着部の長さｄ２を、第３シール領域８３における融着部８３’の長さｄ３よりも大きくすることもできる。
また、各シール領域８１〜８３の中でピッチや長さを多少変動させても良い。但し、ピッチや長さの変動は、平均値に対して±１０％以内であることが好ましく、より好ましくは±５％以内、更に好ましくは３％以内である。 For example, in the diaper 1 described above, the first to third seal regions 81 to 83 have the same pitch of the fused portions 81 ′, but as shown in FIG. 81, the pitches P1 and P2 of the fusion part in the second seal region 82 may be the same, while the pitch P3 of the fusion part 83 ′ in the third seal region 83 may be larger than the pitches P1 and P2. . For example, when the pitches P1 and P2 are 0.5 to 2.0 mm, the pitch P3 can be 1.2 to 4.0 times the pitches P1 and P2.
Further, the length d2 of the fused portion in the second seal region 82 can be made larger than the length d3 of the fused portion 83 ′ in the third seal region 83.
Further, the pitch and length in each of the seal regions 81 to 83 may be varied somewhat. However, the variation in pitch and length is preferably within ± 10%, more preferably within ± 5%, and even more preferably within 3% with respect to the average value.

また、上述したおむつ１においては、腹側部Ａ及び背側部Ｂそれぞれのウエスト開口部ＷＯの周縁端Ｗｅにおいて、外層シート６１及び内層シート６２の両者が折り返されていたが、外層シート６１及び内層シート６２の何れか一方のみが折り返されていても良い。
また、第１シール領域８１の下方に、第１シール領域８１における融着部８１’とは長さｄ１が異なる２つのシール領域８２，８３を設けるのに代えて、第１シール領域８１の下方に、第１シール領域８１における融着部８１’とは長さｄ１が異なる一つのシール領域８２又は８３のみを設けることもできる。
また、上述したおむつ１においては、図２及び図３に示すように、外層シート６１及び内層シート６２は、腹側部Ａと背側部Ｂとにおいて対称的に折り返して折り返し部６１ａ，６１ｂ又は６２ａ，６２ｂを形成しているが、腹側部Ａ及び背側部Ｂにおいて、折り返すシートが異なっていても良く、折り返し部の長さが異なっていても良い。 In the diaper 1 described above, both the outer layer sheet 61 and the inner layer sheet 62 are folded at the peripheral edge We of the waist opening WO of each of the abdominal side A and the back side B. Only one of the inner layer sheets 62 may be folded.
Further, instead of providing two seal regions 82 and 83 having a length d1 different from the fused portion 81 ′ in the first seal region 81 below the first seal region 81, below the first seal region 81 In addition, it is possible to provide only one seal region 82 or 83 having a length d1 different from the fusion part 81 ′ in the first seal region 81.
Moreover, in the diaper 1 mentioned above, as shown in FIG.2 and FIG.3, the outer layer sheet 61 and the inner layer sheet 62 are folded back symmetrically in the ventral part A and the back part B, and the folded parts 61a, 61b or Although 62a and 62b are formed, the sheet | seat turned back may differ in the abdominal side part A and the back side part B, and the length of the turned-back part may differ.

本発明のパンツ型吸収性物品は、パンツ型使い捨ておむつの他、パンツ型（ショーツ型も含む）の生理用ナプキン等の他のパンツ型吸収性物品であっても良い。   The pants-type absorbent article of the present invention may be other pants-type absorbent articles such as a pants-type disposable diaper and a pants-type (including shorts-type) sanitary napkin.

上述した一の実施形態における説明省略部分及び一の実施形態のみが有する要件は、それぞれ他の実施形態に適宜適用することができ、また、各実施形態における要件は、適宜、実施形態間で相互に置換可能である。   The description omitted in one embodiment described above and the requirements of only one embodiment can be applied to other embodiments as appropriate, and the requirements in each embodiment can be appropriately changed between the embodiments. Can be substituted.

１ パンツ型使い捨ておむつ（パンツ型吸収性物品）
２ 表面シート
３ 裏面シート
４ 吸収体
５ 吸収性本体
５１ 側方カフス
５２ 側方カフス形成用の弾性部材
６ 外包材
６ａ 腹側部の側縁部
６ｂ 背側部の側縁部
６１ 外層シート
６１ａ，６１ｂ 折り返し部
６１１，６１ｂ１ 端縁
６２ 内層シート
６２ａ，６２ｂ 折り返し部
６２ａ１，６２ｂ１ 端縁
６３ ウエスト弾性部材
６４ レッグ弾性部材
６５ 胴回り部弾性部材
７ 重合部
７１ シートの積層枚数が最大の領域
８ サイドシール部
８１ 第１シール領域
８２ 第２シール領域
８３ 第３シール領域
８０ａ，８０ｂ エンボスロール
８０ 凸部 1 Pants-type disposable diapers (pants-type absorbent articles)
2 Top sheet 3 Back sheet 4 Absorber 5 Absorbent body 51 Side cuff 52 52 Elastic member 6 for forming side cuff 6 Outer packaging material 6a Side edge of the abdominal side 6b Side edge of the back side 61 Outer sheet 61a, 61b Folding part 611, 61b1 Edge 62 Inner layer sheet 62a, 62b Folding part 62a1, 62b1 Edge 63 Waist elastic member 64 Leg elastic member 65 Girth part elastic member 7 Superposition part 71 Area where the number of stacked sheets is maximum 8 Side seal part 81 1st seal area 82 2nd seal area 83 3rd seal area 80a, 80b Embossing roll 80 Convex part

Claims (5)

腹側部の両側縁部と背側部の両側縁部とを互いに重ね合わせた重合部を融着して形成された一対のサイドシール部を有するパンツ型吸収性物品であって、
前記サイドシール部は、その長手方向の長さが互いに同じである複数の融着部が該長手方向に一定のピッチで配置された第１シール領域と、第１シール領域における前記融着部とは前記長手方向の長さが異なる複数の融着部が該長手方向に一定のピッチで配置された１又は２以上の他のシール領域とを有しており、
前記腹側部及び前記背側部は、パンツ型吸収性物品の外面をなす外層シートと、該外層シートの内面側に配されている内層シートとを有し、該外層シート及び該内層シートが一体的に該内層シートの内面側に折り返されて、ウエスト開口部側の端部に、シートの積層枚数がそれより股下部側に位置する部分より多い領域が形成されており、
第１シール領域は、ウエスト開口部側の端部に形成され、前記重合部の中で最もシートの積層枚数が多い部分を融着しており、
第１シール領域における前記融着部の前記長さが、前記他のシール領域における前記融着部の前記長さより短く、
前記サイドシール部は、第１シール領域の融着強度が、前記他のシール領域の融着強度よりも低く、
第１シール領域の前記融着部及び前記他のシール領域の前記融着部は、それぞれ、サイドシール部の長手方向における長さが、サイドシール部の幅方向における長さより短い、パンツ型吸収性物品。 A pants-type absorbent article having a pair of side seal portions formed by fusing overlapping portions in which both side edges on the ventral side and both side edges on the back side are overlapped,
The side seal portion includes a first seal region in which a plurality of fusion portions having the same length in the longitudinal direction are arranged at a constant pitch in the longitudinal direction, and the fusion portion in the first seal region. Has one or more other sealing regions in which a plurality of fusion parts having different lengths in the longitudinal direction are arranged at a constant pitch in the longitudinal direction,
The abdominal side portion and the back side portion have an outer layer sheet forming the outer surface of the pant-type absorbent article, and an inner layer sheet disposed on the inner surface side of the outer layer sheet, and the outer layer sheet and the inner layer sheet are Folded integrally to the inner surface side of the inner layer sheet, an area where the number of stacked sheets is larger than the portion located on the crotch side is formed at the end on the waist opening side,
The first seal region is formed at the end portion on the waist opening side, and fuses the portion having the largest number of stacked sheets in the overlapped portion,
The length of the fused portion of the first seal region, rather short than the length of the fused portion in the other sealing area,
In the side seal portion, the fusion strength of the first seal region is lower than the fusion strength of the other seal region,
Each of the fused portion in the first seal region and the fused portion in the other seal region has a length in the longitudinal direction of the side seal portion that is shorter than a length in the width direction of the side seal portion . Goods. 前記第１シール領域における融着強度が０．３〜３Ｎ／５ｍｍであり、前記他のシール領域の融着強度が２〜６Ｎ／５ｍｍである、請求項１に記載のパンツ型吸収性物品。 The pants-type absorbent article according to claim 1, wherein a fusion strength in the first seal region is 0.3 to 3 N / 5 mm, and a fusion strength in the other seal region is 2 to 6 N / 5 mm. 第１シール領域における融着部のピッチと、総ての他のシール領域における融着部のピッチとが同じである請求項１又は２に記載のパンツ型吸収性物品。 The pitch of the fused portion of the first sealing region, the pants-type absorbent article according to claim 1 or 2 and the pitch of the fused portion of definitive to all other sealing areas is the same. 第１シール領域は、前記サイドシール部の長手方向に沿う方向の長さが３〜３０ｍｍである、請求項１〜３の何れか１項に記載のパンツ型吸収性物品。 First sealing region, the length in the direction along the longitudinal direction of the side seal portion is 3 to 30 mm, pull-on absorbent article according to any one of claims 1-3. 前記サイドシール部は、前記他のシール領域として、レッグ開口部側の端部に形成された第３シール領域、及び第１シール領域と第３シール領域との間に形成された第２シール領域を有しており、第３シール領域における融着部の、サイドシール部の長手方向における長さが、第２シール領域における融着部の、サイドシール部の長手方向における長さよりも長い、請求項１〜４の何れか１項に記載のパンツ型吸収性物品。 The side seal portion includes, as the other seal region, a third seal region formed at an end on the leg opening side, and a second seal region formed between the first seal region and the third seal region. And the length of the fused portion in the third seal region in the longitudinal direction of the side seal portion is longer than the length of the fused portion in the second seal region in the longitudinal direction of the side seal portion. pant-type absorbent article according to any one of items 1-4.
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JP4249097B2 (en) * 2004-06-29 2009-04-02 王子ネピア株式会社 Pants-type disposable diaper
JP4490405B2 (en) * 2006-09-29 2010-06-23 大王製紙株式会社 Pants-type disposable diapers
JP5156353B2 (en) * 2007-11-30 2013-03-06 大王製紙株式会社 Pants-type disposable diapers
JP5238567B2 (en) * 2009-03-23 2013-07-17 花王株式会社 Pants-type absorbent article
JP5238568B2 (en) * 2009-03-23 2013-07-17 花王株式会社 Pants-type absorbent article

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