JP2006141761A - Disposable diaper - Google Patents

Disposable diaper Download PDF

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JP2006141761A
JP2006141761A JP2004337077A JP2004337077A JP2006141761A JP 2006141761 A JP2006141761 A JP 2006141761A JP 2004337077 A JP2004337077 A JP 2004337077A JP 2004337077 A JP2004337077 A JP 2004337077A JP 2006141761 A JP2006141761 A JP 2006141761A
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absorbent
sheet
disposable diaper
absorbent body
diaper
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JP4159539B2 (en
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Jun Sasaki
純 佐々木
Haruko Toyoshima
晴子 豊島
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Kao Corp
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Kao Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable diaper provided with an absorptive core, in which an appearance when being worn is simple and fitness and leakage proofness at a crotch part are excellent. <P>SOLUTION: An absorptive body 5 is formed such that both side parts at the crotch part C are erected and leakage proof cuffs 6 are formed on both sides of the absorptive body. The absorptive core 4 which is the forming member of the absorptive body comprises a center absorbent 41 and a pair of side absorbents 42, 42 connected at one part F in the longitudinal direction of the center absorbent and provided on both side parts of the center absorbent, and cutoff parts 43, 43 are provided between the center absorbent and the pair of side absorbents. The cutoff parts are respectively provided on both side parts of the at least center part in the longitudinal direction of the center absorbent and opened at both side parts of the other part R in the longitudinal direction, and the side absorbents are arranged at least at the crotch part C. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、着用時における外観がすっきりしており、防漏性能及び加工性能に優れた使い捨ておむつに関する。   The present invention relates to a disposable diaper having a clean appearance when worn and excellent in leakage prevention performance and processing performance.

一般の従来の使い捨ておむつは、着用状態において股下部のだぶつきが大きく、もこもことした外観を呈するものが多い。このようなおむつを着用すると、足を動かしにくく、着用者の動きによっておむつの位置ずれを起こしやすいため、漏れが生じやすい。また、股下部がだぶつくと、おむつの上にさらにズボンなどの上着を着用することが困難となり、なんとか上着を着用できても、その外観は良好とは言い難い。   In general, conventional disposable diapers have a large crotch in the worn state and often have a strange appearance. When such a diaper is worn, it is difficult to move the foot, and the position of the diaper is likely to shift due to the movement of the wearer. In addition, if the crotch part is loose, it becomes difficult to wear a trousers or other outerwear on the diaper, and even if the outerwear can be worn somehow, the appearance is not good.

股下部のたぶつきを解消し、股下部でのフィット性を高めるためには、股下部における吸収体の幅を狭めることが有効であることは知られている。しかし、股下部の幅が狭くなっている吸収体は、実質的に股下部での吸収体の幅が狭いために吸収力が低く、吸収体の存在しない部分では尿などの排泄物を吸収しないため、股下部での漏れが生じやすい。また、上記股下部における漏れを防止するために、股下部の吸収ポリマーの量を多くすることが考えられるが、斯かる構成では、装着直後における外観及びフィット性は良好ではあるが、尿を吸収した後の股下の外観は、多量のポリマーの膨潤により、過度に膨らみ(モコモコし)、良好なものとは言えなくなってしまうのが現状である。   It is known that it is effective to reduce the width of the absorbent body in the crotch part in order to eliminate bumps in the crotch part and improve the fit in the crotch part. However, an absorber with a narrow width of the crotch has a low absorption power because the width of the absorber at the crotch is substantially narrow, and does not absorb excrement such as urine in a portion where the absorber does not exist. Therefore, leakage at the crotch part is likely to occur. In order to prevent leakage at the crotch part, it is conceivable to increase the amount of the absorbing polymer in the crotch part. With such a configuration, the appearance and fit immediately after wearing are good, but urine is absorbed. The appearance of the crotch after the swelling is excessively swollen due to the swelling of a large amount of polymer, and it cannot be said that it is good.

そこで、股下部でのフィット性と防漏性との両立を図った技術が種々提案されている。例えば、吸収体を、股下部において巾が狭くなされた第1の吸収体と、この巾が狭くなった部位の両側で第1の吸収体から離れた位置に設けられた一対の第2の吸収体との3つに分割し、第1の吸収体と一対の第2の吸収体とを親水性シートで連結した使い捨ておむつが提案されている(特許文献1参照)。   Thus, various techniques for achieving both fit at the crotch and leakage prevention have been proposed. For example, the absorbent body includes a first absorbent body having a narrow width at the crotch portion and a pair of second absorbents provided at positions away from the first absorbent body on both sides of the narrowed portion. A disposable diaper in which a first absorbent body and a pair of second absorbent bodies are connected by a hydrophilic sheet has been proposed (see Patent Document 1).

また、股下部で3つに分割させた吸収体のうち、おむつの幅方向両側に位置する吸収体をそれぞれ起立させるようにしたおむつも提案されている。例えば、吸収体が、股下部において幅が狭くなされた第一吸収体と、この幅が狭くなった部位の両側で第一吸収体から離れた位置に設けられた一対の第二吸収体とを有し、さらに第二吸収体の第一吸収体とは反対側の長手方向両側部に立体ギャザーが配設されており、この立体ギャザーと共に第二吸収体が最外層シートより離間して第一吸収体側部に起立する使い捨ておむつが提案されている(特許文献2参照)。また、おむつの長手方向に沿って中央部に平坦に位置する第1の吸収体と、該第1の吸収体の両側に該第1の吸収体と少なくとも一部において間隔を設けて配置された第2の吸収体とを備え、該第2の吸収体の上部に弾性体が取り付けられて、該第2の吸収体に起立性向とギャザーとが付与されている使い捨ておむつが提案されている(特許文献3参照)。
特公平7−28892号公報 特開平10−5274号公報 特許第2884355号明細書
Moreover, the diaper which made the absorber located in the width direction both sides of a diaper stand up among the absorbers divided into three by the crotch part is also proposed. For example, the absorbent body includes a first absorbent body whose width is narrowed at the crotch portion, and a pair of second absorbent bodies provided at positions away from the first absorbent body on both sides of the narrowed portion. Further, solid gathers are disposed on both sides in the longitudinal direction opposite to the first absorbent body of the second absorbent body, and the second absorbent body is spaced apart from the outermost layer sheet together with the solid gathers. A disposable diaper that stands on the side of the absorber has been proposed (see Patent Document 2). Further, the first absorbent body positioned flat in the central portion along the longitudinal direction of the diaper, and the first absorbent body is disposed on both sides of the first absorbent body so as to be spaced at least partially. There has been proposed a disposable diaper comprising a second absorbent body, an elastic body is attached to the upper part of the second absorbent body, and a standing tendency and gathers are imparted to the second absorbent body ( (See Patent Document 3).
Japanese Patent Publication No. 7-28892 Japanese Patent Laid-Open No. 10-5274 Japanese Patent No. 2884355

特許文献1〜3に開示されているような、股下部で3分割された吸収体を具備するおむつは、各分割吸収体がおむつの所定位置にそれぞれ正確に配置されて初めて、期待通りの防漏性能を発揮することができるが、実際の製造現場において分割吸収体の高精度な配置を安定的に行うことは難しく、分割吸収体が所定位置からずれて配置されたまま製品化されてしまうおそれが少なくない。   As disclosed in Patent Documents 1 to 3, a diaper having an absorbent body divided into three parts at the crotch portion is not expected to be prevented until each divided absorbent body is accurately arranged at a predetermined position of the diaper. Leakage performance can be demonstrated, but it is difficult to stably place the high-precision split absorbers at the actual manufacturing site, and the split absorbers will be commercialized while being displaced from the predetermined positions. There are many fears.

従って、本発明の目的は、着用時における外観がすっきりしており、股下部でのフィット性及び防漏性に優れ、このようなフィット性及び防漏性を付与させるに適した吸収性コアを具備する使い捨ておむつを製造時において安定的に提供することにある。   Accordingly, an object of the present invention is to provide an absorbent core that has a clean appearance when worn, is excellent in fit and leakage prevention at the crotch, and is suitable for imparting such fit and leakage prevention. It is in providing the disposable diaper which it comprises stably at the time of manufacture.

本発明は、表面シートと吸収性コアとを有する吸収性本体を具備する使い捨ておむつにおいて、前記吸収性本体は、股下部における両側部が起立するようになされており、前記吸収性本体の両側に、該吸収性本体に接合された防漏カフ形成用シート及び該防漏カフ形成用シートに伸長状態で固定された弾性部材を備えた、防漏カフが形成されており、前記吸収性コアは、中央吸収体と、該中央吸収体の長手方向一方部で連接され且つ該中央吸収体の両側部に設けられた一対のサイド吸収体とを具備し、該中央吸収体と一対の該サイド吸収体との間にそれぞれ切離部を有しており、該切離部はそれぞれ該中央吸収体の少なくとも長手方向中央部の両側部に設けられ且つ長手方向他方部の両側部に開放されており、前記サイド吸収体は、少なくとも股下部に配される使い捨ておむつを提供することにより前記目的を達成したものである。   The present invention relates to a disposable diaper having an absorbent main body having a topsheet and an absorbent core, wherein the absorbent main body is configured such that both side portions of the crotch stand upright on both sides of the absorbent main body. A leak-proof cuff comprising a leak-proof cuff forming sheet joined to the absorbent main body and an elastic member fixed to the leak-proof cuff forming sheet in an extended state, and the absorbent core is A central absorbent body, and a pair of side absorbent bodies connected to each other in the longitudinal direction of the central absorbent body and provided on both sides of the central absorbent body, the central absorbent body and the pair of side absorbent bodies Each of which has a separating portion between the body, and the separating portions are provided at both sides of the central absorbent body at least in the longitudinal center and open to both sides of the other longitudinal portion. The side absorber is at least It is obtained by achieving the above object by providing a disposable diaper that is disposed crotch portion.

本発明の使い捨ておむつは、特に、吸収性コアの形態に特徴を有するため、着用状態で股下部がだぶつかず、おむつの外観がすっきりしていて、股下部でのフィット性及び防漏性に優れており、また、おむつの製造現場において該吸収性コアの高精度な配置を安定的に行うことができるため、従来の3分割形態の吸収性コアを用いた使い捨ておむつに比して加工性能にも優れている。   The disposable diaper of the present invention is particularly characterized by the form of the absorbent core, so that the crotch does not bump when worn, the diaper has a clean appearance, and fit and leakage prevention at the crotch It is superior and can stably arrange the absorbent core with high precision at the diaper manufacturing site. Therefore, the processing performance is higher than that of a disposable diaper using a conventional three-part absorbent core. Also excellent.

以下に、本発明について、その好ましい一実施形態に基づき図面を参照しながら説明する。
第1実施形態の使い捨ておむつ1(以下、おむつ1という)は、いわゆるパンツ型のおむつであり、図1及び図2に示すように、液透過性の表面シート2と液保持性の吸収性コア4とを有する吸収性本体5を具備し、更に、該吸収性本体5の非肌当接面側に外装体10を具備する。このおむつ1は、着用時に着用者の腹側に配される腹側部Aと、着用者の背側に配される背側部Bと、その間に位置する股下部Cとに区分される。腹側部A、背側部B及び股下部Cは、展開且つ伸張状態(各部の弾性部材を伸張させ平面状に拡げた状態、図2に示す状態)のおむつにおいて、その長手方向(図2の上下方向)の全長を略3等分するように3領域に区分したときの各領域である。
Hereinafter, the present invention will be described based on a preferred embodiment thereof with reference to the drawings.
The disposable diaper 1 (hereinafter referred to as diaper 1) of the first embodiment is a so-called pants-type diaper, and as shown in FIGS. 1 and 2, a liquid-permeable topsheet 2 and a liquid-retaining absorbent core. 4 and an exterior body 10 on the non-skin contact surface side of the absorbent body 5. The diaper 1 is divided into an abdominal side A disposed on the wearer's abdomen, a back side B disposed on the back of the wearer, and a crotch C positioned therebetween. The ventral portion A, the back portion B, and the crotch portion C are in a longitudinal direction (FIG. 2) in a diaper that is expanded and stretched (a state in which the elastic member of each portion is stretched and expanded in a flat shape, as shown in FIG. 2). In the vertical direction) is divided into three regions so as to be divided into approximately three equal parts.

尚、本明細書において、「非肌当接面側」とは、吸収性本体などの各部材の表裏両側(面)のうち、着用時に着用者の肌側とは反対側に配される側(面)である。また、以下、「肌当接面側」という語句を使用することがあるが、これは、各部材の表裏両側(面)のうち、着用時に着用者の肌側に配される側(面)である。
「長手方向」とは、各部材の長辺と平行な方向である。また、以下、「幅方向」という語句を使用することがあるが、これは、該長手方向と直交する方向である。
In addition, in this specification, the "non-skin contact surface side" is the side arranged on the opposite side to the wearer's skin side during wearing, among the front and back sides (surfaces) of each member such as the absorbent main body. (Surface). In addition, hereinafter, the term “skin contact surface side” may be used, and this is the side (surface) that is arranged on the skin side of the wearer when wearing, out of the front and back sides (surface) of each member. It is.
The “longitudinal direction” is a direction parallel to the long side of each member. Hereinafter, the phrase “width direction” may be used, which is a direction orthogonal to the longitudinal direction.

前記吸収性本体5は縦長矩形形状をなし、その長手方向を、おむつの長手方向に一致させて、腹側部Aから背側部Bに亘るように、ホットメルト型接着剤等の公知の接合手段により前記外装体10の幅方向中央部に接合されている。外装体10は、腹側部Aに位置する部分の両側縁部と背側部Bに位置する部分の両側縁部とが、ヒートシール、高周波シール、超音波シール等の公知の接合手段により互いに接合されており、これにより一対のサイドシール部が形成されている。また、その接合によって、おむつ1に、ウエスト開口部7及び一対のレッグ開口部8,8が形成されている。
第1実施形態のおむつ1の上述の構成は、従来公知のおむつと同様である。
The absorptive main body 5 has a vertically long rectangular shape, and a known joint such as a hot-melt adhesive is used so that its longitudinal direction coincides with the longitudinal direction of the diaper and extends from the abdominal side A to the back side B. It is joined to the central portion in the width direction of the exterior body 10 by means. The exterior body 10 is configured such that both side edges of the portion located on the ventral side A and both side edges of the portion located on the back side B are connected to each other by known joining means such as heat sealing, high frequency sealing, and ultrasonic sealing. It joins and a pair of side seal part is formed by this. Moreover, the waist opening part 7 and a pair of leg opening parts 8 and 8 are formed in the diaper 1 by the joining.
The above-mentioned structure of the diaper 1 of 1st Embodiment is the same as that of a conventionally well-known diaper.

第1実施形態のおむつ1においては、図2に示すように、前記吸収性コア4の長手方向の両側縁部の全長に亘って、前記吸収性本体5の側部(具体的には、後述するサイド吸収体42)立ち上げ用の弾性部材9が配されており、これにより、吸収性本体5は、図5に示すように、股下部Cにおける両側部52,52(サイド吸収体42,42)が起立するようになされている。   In the diaper 1 of 1st Embodiment, as shown in FIG. 2, the side part (specifically, it mentions later) over the full length of the both-sides edge part of the longitudinal direction of the said absorbent core 4. As shown in FIG. The side absorbent body 42) is provided with an elastic member 9 for starting up, so that the absorbent main body 5 has both side portions 52, 52 (side absorbent bodies 42, 52) in the crotch C as shown in FIG. 42) stands up.

前記吸収性本体5の両側には、防漏カフ6,6が形成されている。該防漏カフ6は、該吸収性本体5に接合された防漏カフ形成用シート60及び該防漏カフ形成用シートに伸長状態で固定された弾性部材61を備えている。   Leak-proof cuffs 6 and 6 are formed on both sides of the absorbent main body 5. The leak-proof cuff 6 includes a leak-proof cuff forming sheet 60 joined to the absorbent main body 5 and an elastic member 61 fixed to the leak-proof cuff forming sheet in an expanded state.

以下に、第1実施形態のおむつ1における吸収性コア4について詳述する。吸収性コア4は、図1〜図3、特に図3に示すように、全体として、おむつの長手方向に沿って略縦長(縦300〜500mm、横80〜170mm)の矩形状の平面視形状をなしており、その全体が、ティッシュペーパーや透水性の不織布からなる透水性の被覆シート(図示せず)で被覆されている。   Below, the absorptive core 4 in the diaper 1 of 1st Embodiment is explained in full detail. As shown in FIGS. 1 to 3, particularly FIG. 3, the absorbent core 4 generally has a rectangular shape in plan view that is substantially vertically long (300 to 500 mm long and 80 to 170 mm wide) along the longitudinal direction of the diaper. The whole is covered with a water-permeable covering sheet (not shown) made of tissue paper or a water-permeable nonwoven fabric.

前記吸収性コア4は、砂時計型の中央吸収体41と、該中央吸収体41の長手方向一方部(腹側部)Fで連接され且つ該中央吸収体41の両側部に対称的に設けられた一対のサイド吸収体42,42とを具備し、該中央吸収体41と一対の該サイド吸収体42,42との間にそれぞれ切離部43,43を有している。該切離部43,43は、それぞれ中央吸収体41の少なくとも長手方向中央部Mの両側部に設けられ且つ長手方向他方部(背側部)Rの両側部に開放されている。尚、長手方向一方部F、長手方向中央部M、長手方向他方部Rは、図3に示す状態の吸収性コア4において、その長手方向の全長を略3等分するように3領域に区分したときの各領域である。   The absorbent core 4 is connected to an hourglass-shaped central absorber 41 and one longitudinal part (abdominal side) F of the central absorbent 41 and is provided symmetrically on both sides of the central absorbent 41. A pair of side absorbers 42, 42 are provided, and a separation portion 43, 43 is provided between the central absorber 41 and the pair of side absorbers 42, 42, respectively. The separation parts 43, 43 are provided on both side parts of at least the longitudinal center part M of the central absorbent body 41 and open to both side parts of the other longitudinal part (back side part) R. In addition, the longitudinal direction one part F, the longitudinal direction center part M, and the longitudinal direction other part R are divided into 3 areas so that the full length of the longitudinal direction may be divided into about 3 equally in the absorbent core 4 of the state shown in FIG. It is each area when doing.

前記吸収性コア4は、図2に示すように、前記サイド吸収体42,42が少なくとも前記股下部Cに配されるように、おむつ1に配される。第1実施形態においては、吸収性コア4は、サイド吸収体42,42が股下部Cに配されると共に、前記中央吸収体41の長手方向一方部Fが腹側部Aに位置するように配されている。   As shown in FIG. 2, the absorbent core 4 is disposed on the diaper 1 so that the side absorbent bodies 42 and 42 are disposed at least on the crotch portion C. In the first embodiment, the absorbent core 4 is such that the side absorbent bodies 42 and 42 are arranged in the crotch part C, and the longitudinal direction one part F of the central absorbent body 41 is located in the ventral part A. It is arranged.

第1実施形態においては、前記中央吸収体41は、T字型の上部吸収体411と、該上部吸収体411より大きい下部吸収体412とからなり、該上部吸収体411は、該下部吸収体412の長手方向の一方部Fから長手方向中央部Mに亘りそれらの肌当接面側に重ね合わされている。一対の前記サイド吸収体42,42は、該下部吸収体412と一体的に形成されている。上部吸収体411と下部吸収体412とがこのように重ね合わされた状態において、該下部吸収体412における、該上部吸収体411の縁からはみ出した部分の長さdは、好ましくは0〜20mm、更に好ましくは5〜15mmである。下部吸収体412と上部吸収体411とを排尿ポイント近傍でこのように重ね合わされた状態で配置することにより、おむつ全体の厚みをそれほど増すことがなく、排尿ポイント近傍の吸水ポリマー及びパルプの実質量を高めることができ、吸水ポリマー及びパルプの利用効率を高めることが可能となり、良好な漏れ防止性能を実現することができる。   In the first embodiment, the central absorbent body 41 includes a T-shaped upper absorbent body 411 and a lower absorbent body 412 larger than the upper absorbent body 411. The upper absorbent body 411 is composed of the lower absorbent body. 412 is overlapped on the skin contact surface side from one longitudinal part F to the longitudinal center part M. The pair of side absorbers 42 and 42 are formed integrally with the lower absorber 412. In the state where the upper absorbent body 411 and the lower absorbent body 412 are superposed in this way, the length d of the portion of the lower absorbent body 412 that protrudes from the edge of the upper absorbent body 411 is preferably 0 to 20 mm, More preferably, it is 5-15 mm. By arranging the lower absorbent body 412 and the upper absorbent body 411 in the state of being overlapped in the vicinity of the urination point in this manner, the total amount of the water-absorbing polymer and pulp in the vicinity of the urine point is not increased so much. It is possible to increase the utilization efficiency of the water-absorbing polymer and pulp, and it is possible to realize good leakage prevention performance.

前記上部吸収体411のポリマー坪量は、好ましくは80〜230g/m2、更に好ましくは100〜200g/m2であり、パルプ坪量は、好ましくは80〜230g/m2、更に好ましくは100〜200g/m2である。前記下部吸収体412のポリマー坪量及びパルプ坪量についても、それぞれ上部吸収体411と同様であることが好ましい。各吸収体411,412のポリマー坪量及びパルプ坪量がそれぞれ上記の下限未満では、防漏性能に問題が生じる、加工性能的に安定した状態で成形できない(均一に配置できない)等のおそれがある。逆に、各吸収体411,412のポリマー坪量及びパルプ坪量がそれぞれ上記の上限超では、装着時におけるフィット性に問題が生じる、排尿後の股下において過度に吸収体が膨潤しモコモコする、装着者に違和感を与える等のおそれがある。 Polymer basis weight of the upper absorber 411 is preferably 80~230g / m 2, still preferably from 100 to 200 g / m 2, the pulp basis weight, preferably 80~230g / m 2, more preferably 100 ˜200 g / m 2 . The polymer basis weight and pulp basis weight of the lower absorbent body 412 are also preferably the same as those of the upper absorbent body 411, respectively. If the polymer basis weight and pulp basis weight of each of the absorbent bodies 411 and 412 are less than the above lower limits, there is a possibility that a problem occurs in leakage prevention performance, and molding cannot be performed in a stable state in terms of processing performance (cannot be arranged uniformly). is there. On the contrary, if the polymer basis weight and pulp basis weight of each absorber 411, 412 exceeds the above upper limit, respectively, there is a problem in the fit property at the time of wearing, the absorber excessively swells in the crotch after urination, There is a risk of discomfort to the wearer.

前記上部吸収体411及び前記下部吸収体412の何れにおいても、ポリマーとパルプの重量比率は、パルプとポリマーの混合状態を考慮すると、4:6〜6:4であることが好ましい。
また、液吸収後の股下部の外観(ポリマーの膨潤によるモコモコ感の防止)を考慮すると、前記上部吸収体411のポリマー坪量と前記下部吸収体412のポリマー坪量との合計値は、160〜400g/m2であることが好ましい。
In any of the upper absorbent body 411 and the lower absorbent body 412, the weight ratio of the polymer to the pulp is preferably 4: 6 to 6: 4 in consideration of the mixed state of the pulp and the polymer.
In addition, considering the appearance of the crotch after absorption of liquid (preventing the feeling of swelling due to polymer swelling), the total value of the polymer basis weight of the upper absorbent body 411 and the polymer basis weight of the lower absorbent body 412 is 160. It is preferably ˜400 g / m 2 .

前記中央吸収体41(下部吸収体412)の長手方向中央部Mの幅W1は、好ましくは30〜80mm、更に好ましくは40〜70mmである。中央吸収体41の長手方向中央部Mは、股下部Cに配される領域であり、該長手方向中央部Mの幅が30mm未満では、特に股下部において漏れが生じやすくなる、中央吸収体の製造時における加工性が悪くなる等のおそれがあり、80mm超では、着用時における外観の悪化、股下部でのフィット性の低下等のおそれがある。   The width W1 of the central portion M in the longitudinal direction of the central absorbent body 41 (lower absorbent body 412) is preferably 30 to 80 mm, more preferably 40 to 70 mm. The central part M in the longitudinal direction of the central absorbent body 41 is a region arranged in the crotch part C. If the width of the central part M in the longitudinal direction is less than 30 mm, leakage particularly easily occurs in the crotch part. There is a risk that processability at the time of manufacture is deteriorated, and when it is more than 80 mm, there is a risk of deterioration of the appearance at the time of wearing and lowering of fit at the crotch part.

また、前記下部吸収体412及び一対の前記サイド吸収体42,42を具備する吸収性コア4の幅W2は、装着時における外観(すっきり感)、及び股下部におけるフィット性の観点から、好ましくは80〜170mm、更に好ましくは90〜160mmである。   In addition, the width W2 of the absorbent core 4 including the lower absorbent body 412 and the pair of side absorbent bodies 42 and 42 is preferably from the viewpoint of the appearance at the time of wearing (clean feeling) and the fit property in the crotch part. It is 80-170 mm, More preferably, it is 90-160 mm.

前記サイド吸収体42は、その長さ(長手方向の長さ)Lが、好ましくは100〜270mm、更に好ましくは120〜250mmであり、その幅W3が、好ましくは10〜50mm、更に好ましくは15〜45mmである。ここで言う「サイド吸収体42の長さ」とは、前記切離部43の閉鎖端部(非開放端部)の長手方向先端(切離部43における中央吸収体41とサイド吸収体42との連接部近傍の長手方向先端)43fを通り且つ該サイド吸収体42の幅方向に平行な仮想線xと、該サイド吸収体42における該切離部43の開放端部近傍の長手方向先端(サイド吸収体42における中央吸収体41との連接部から最も離れた長手方向先端、又はサイド吸収体42の自由端の先端)42rを通り且つ該サイド吸収体42の幅方向に平行な仮想線yとの間の距離を意味する。
また、前記幅W1、W2及びW3は、前記中央吸収体41の長手方向の長さを2等分する幅方向の中心線上を測定した値である。
The side absorber 42 has a length (length in the longitudinal direction) L of preferably 100 to 270 mm, more preferably 120 to 250 mm, and a width W3 of preferably 10 to 50 mm, more preferably 15. ~ 45mm. Here, the “length of the side absorber 42” means the longitudinal end of the closed end (non-open end) of the separation portion 43 (the central absorber 41 and the side absorber 42 in the separation portion 43). Imaginary line x passing through 43f in the vicinity of the connecting portion and parallel to the width direction of the side absorber 42, and a longitudinal tip in the vicinity of the open end of the separation portion 43 in the side absorber 42 An imaginary line y passing through the longitudinal end of the side absorber 42 farthest from the connecting portion with the central absorber 41 or the tip of the free end of the side absorber 42) 42r and parallel to the width direction of the side absorber 42 Means the distance between.
The widths W1, W2, and W3 are values measured on the center line in the width direction that bisects the length of the central absorbent body 41 in the longitudinal direction.

前記切離部43の閉鎖端部の長手方向先端43fは、該先端43fに最も近い前記吸収性コア4の長手方向一側縁4fから該吸収性コア4全長の好ましくは10〜40%部分、更に好ましくは15〜35%部分に位置することが好ましい。
また、前記サイド吸収体42における前記切離部43の開放端部近傍の長手方向先端42rは、前記吸収性コア4の長手方向他側縁(該先端42rに最も近い前記吸収性コア4の長手方向他側縁)4rから該吸収性コア4全長の好ましくは10〜40%部分、更に好ましくは15〜35%部分に位置することが好ましい。
The longitudinal tip 43f of the closed end of the separation part 43 is preferably 10 to 40% of the entire length of the absorbent core 4 from the longitudinal side edge 4f of the absorbent core 4 closest to the tip 43f. More preferably, it is located in a 15 to 35% portion.
In addition, a longitudinal tip 42r in the vicinity of the open end of the cut-off portion 43 in the side absorbent body 42 is the other longitudinal edge of the absorbent core 4 (the longitudinal length of the absorbent core 4 closest to the tip 42r). It is preferable that it is located in the portion of the entire length of the absorbent core 4 from 4r to 4%, more preferably from 15 to 35%.

第1実施形態のおむつ1は、図3に示す吸収性コア4を用いたパンツ型の使い捨ておむつであり、該おむつ1における上述した吸収性コア4以外の各構成は、以下に詳述する通りである。   The diaper 1 of 1st Embodiment is a pants-type disposable diaper using the absorptive core 4 shown in FIG. 3, and each structure other than the absorptive core 4 mentioned above in this diaper 1 is as explained in full detail below. It is.

第1実施形態のおむつ1においては、図4及び図5に示すように、前記表面シート2は、前記吸収性コア4の肌当接面4a側の全域及び該吸収性コア4の幅方向両側縁部4b,4bの全域を被覆し、且つ該吸収性コア4の非肌当接面4c側の幅方向両側部近傍を被覆し、該表面シート2の両側端部21,21において前記防漏カフ形成用シート60にヒートシール等の接合手段により接合固定されて、接合固定部67,67を形成している。   In the diaper 1 of 1st Embodiment, as shown in FIG.4 and FIG.5, the said surface sheet 2 is the skin contact surface 4a side whole area of the said absorptive core 4, and the width direction both sides of this absorptive core 4 Covers the entire area of the edge portions 4b, 4b and covers the vicinity of both sides in the width direction on the non-skin contact surface 4c side of the absorbent core 4; Joining and fixing portions 67 and 67 are formed by being joined and fixed to the cuff forming sheet 60 by joining means such as heat sealing.

また、第1実施形態のおむつ1においては、図4及び図5に示すように、前記外装体10の肌当接面側に、液不透過性の裏面シート3が接合され、該裏面シート3の肌当接面側に、前記防漏カフ形成用シート60及び前記吸収性本体5が順次接合されている。これら各部材の接合には、ホットメルト型接着剤等の接合手段が利用できる。該裏面シート3は、吸収性本体5とほぼ同寸法の縦長矩形形状をなし、吸収性本体5と同位置(外装体10の幅方向の中央部)に、その長手方向を、おむつ長手方向に一致させて配されている。   Moreover, in the diaper 1 of 1st Embodiment, as shown in FIG.4 and FIG.5, the liquid-impermeable back surface sheet 3 is joined to the skin contact surface side of the said exterior body 10, and this back surface sheet 3 is attached. The leakage-proof cuff forming sheet 60 and the absorbent main body 5 are sequentially joined to the skin contact surface side. For joining these members, joining means such as a hot-melt adhesive can be used. The back sheet 3 has a vertically long rectangular shape having substantially the same dimensions as the absorbent main body 5, and the longitudinal direction thereof is the same position as the absorbent main body 5 (the central portion in the width direction of the exterior body 10) in the longitudinal direction of the diaper. It is arranged to match.

そして、前記吸収性本体5は、図4及び図5に示すように、その非肌当接面側のおむつ幅方向の中央部に、該吸収性本体5の長手方向全体に亘って、前記吸収性コア4が前記表面シート2で被覆されていない非被覆部51を有しており、前記防漏カフ形成用シート60は、該非被覆部51に対応する部分に配されていない。   And as shown in FIG.4 and FIG.5, the said absorptive main body 5 is the said absorption body over the whole longitudinal direction of this absorptive main body 5 in the center part of the diaper width direction of the non-skin contact surface side. The core 4 has an uncovered portion 51 that is not covered with the top sheet 2, and the leak-proof cuff forming sheet 60 is not disposed on a portion corresponding to the uncovered portion 51.

また、第1実施形態のおむつ1においては、前記表面シート2の前記側端部21と前記防漏カフ形成用シート60との接合固定部67は、図3〜図5に示すように、前記サイド吸収体42の幅方向における最内側点P(サイド吸収体42において最も幅方向内方に位置する部分)よりおむつ幅方向内方にある。そして、該接合固定部67よりおむつ幅方向外方に、前記吸収性本体5の側部(前記サイド吸収体42)立ち上げ用の前記弾性部材9が伸張状態で配されている。尚、接合固定部の位置は、該接合固定部の幅方向外側の端の位置を接合固定部の位置とする。   Moreover, in the diaper 1 of 1st Embodiment, as shown in FIGS. 3-5, the joining fixing | fixed part 67 of the said side edge part 21 of the said surface sheet 2 and the said sheet 60 for leakage prevention cuff is the said, The innermost point P in the width direction of the side absorbent body 42 (the portion located most inward in the width direction in the side absorbent body 42) is located inward in the diaper width direction. And the elastic member 9 for starting up the side part (the side absorbent body 42) of the absorbent main body 5 is arranged in an extended state outward from the joint fixing part 67 in the diaper width direction. Note that the position of the joint fixing portion is the position of the outer end in the width direction of the joint fixing portion.

前記接合固定部67は、ヒートシール、高周波シール、超音波シール、ホットメルト型の接着剤等の公知の接合手段を用いて、前記防漏カフ形成用シート60と前記表面シート2の前記側端部21とを接合することにより形成されている。第1実施形態のおむつ1においては、図3に示すように、接合固定部67を連続した直線状に形成しているが、接合固定部の形状はこれに限定されず、所々に間欠部を有する不連続な直線状、あるいは連続又は不連続な曲線状などに形成してもよい。   The joint fixing portion 67 uses the known sealing means such as heat seal, high frequency seal, ultrasonic seal, hot melt type adhesive, etc., and the side end of the leakproof cuff forming sheet 60 and the top sheet 2. It is formed by joining the part 21. In the diaper 1 of 1st Embodiment, as shown in FIG. 3, although the junction fixing | fixed part 67 is formed in the continuous linear form, the shape of a junction fixing | fixed part is not limited to this, An intermittent part is in places. It may be formed in a discontinuous linear shape, a continuous or discontinuous curved shape, or the like.

前記外装体10について説明すると、該外装体10は、図2、図4及び図5に示すように、2枚のシート11,12と、これら2枚のシート間に固定された各部の弾性部材とからなる。2枚の該シート11,12間には、前記ウエスト開口部7の周縁部にウエストギャザーを形成するウエスト部弾性部材71,前記レッグ開口部8の周縁部にレッグギャザーを形成するレッグ部弾性部材81,及び該ウエスト開口部7の周縁端から下方に20mm離間した位置から該レッグ開口部8の上端までの領域である胴回り部Dに左右に分割された状態の胴回りギャザーを形成する胴回り弾性部材91が、それぞれ伸張状態で、ホットメルト型接着剤等の接合手段により接合固定されている。   The exterior body 10 will be described. The exterior body 10 includes two sheets 11 and 12 and elastic members at respective portions fixed between the two sheets as shown in FIGS. It consists of. Between the two sheets 11 and 12, a waist elastic member 71 that forms a waist gather at the peripheral edge of the waist opening 7, and a leg elastic member that forms a leg gather at the peripheral edge of the leg opening 8 81, and a waistline elastic member forming a waistline gather in a state where the waistline part D is divided into a waistline part D which is a region from a position spaced 20 mm downward from the peripheral edge of the waist opening 7 to the upper end of the leg opening 8 91 are bonded and fixed in a stretched state by a bonding means such as a hot-melt adhesive.

前記シート11及びシート12は、何れも通気性の不織布から構成されている。これら2枚のシートのうち、非肌当接面側に位置するシート11は、その長手方向において、肌当接面側に位置するシート12の前後端縁(長手方向の両端縁)よりそれぞれ延出した延出部を有し、これらの延出部はそれぞれ、前記外装体10のシート12上に前記吸収性本体5が配置された後、該吸収性本体5の前後端(長手方向の両端)を覆うように該吸収性本体5側に折り返されて接着されている。   The sheet 11 and the sheet 12 are both made of a breathable nonwoven fabric. Of these two sheets, the sheet 11 positioned on the non-skin contact surface side extends in the longitudinal direction from the front and rear end edges (both end edges in the longitudinal direction) of the sheet 12 positioned on the skin contact surface side. After the absorbent main body 5 is disposed on the sheet 12 of the exterior body 10, these extended portions have front and rear ends (both ends in the longitudinal direction). ) Is folded back and bonded to the absorbent main body 5 side.

また、前記防漏カフ6について説明すると、該防漏カフ6は、図2、図4及び図5に示すように、前記吸収性本体5の長手方向の両側それぞれに、おむつ長手方向へ延びるように形成されており、前記防漏カフ形成用シート60及び複数本の前記弾性部材61を備える。第1実施形態のおむつ1においては、該防漏カフ形成用シート60として、所定幅の帯状の撥水性シート一枚を、その長手方向に沿う折り曲げ線で二つ折りして、相対向する層間をホットメルト型接着剤又は部分的な熱又は超音波シール等で接合した2層構造のシートを用いている。複数本の該弾性部材61は、この2層構造シートの層間に伸張状態で固定されている。   The leak-proof cuff 6 will be described. The leak-proof cuff 6 extends in the longitudinal direction of the diaper on both sides in the longitudinal direction of the absorbent main body 5 as shown in FIGS. 2, 4 and 5. The leakage prevention cuff forming sheet 60 and a plurality of the elastic members 61 are provided. In the diaper 1 of the first embodiment, as the leak-proof cuff forming sheet 60, one strip-shaped water-repellent sheet having a predetermined width is folded in two along a fold line along its longitudinal direction, and the opposing layers are separated. A hot-melt adhesive or a sheet having a two-layer structure bonded by partial heat or ultrasonic sealing is used. The plurality of elastic members 61 are fixed in an expanded state between the layers of the two-layer structure sheet.

前記防漏カフ形成用シート60は、図4に示すように、腹側部A及び背側部Bそれぞれにおいて、より具体的には、前記吸収性本体5の長手方向の両端部それぞれにおいて、該吸収性本体5を、肌当接面側から非肌当接面側に亘って覆っており、該吸収性本体5の長手方向の両端部それぞれにおいて、該吸収性本体5の肌当接面側にヒートシール、高周波シール、超音波シール、ホットメルト型接着剤等の公知の接合手段により接合されている。   As shown in FIG. 4, the leak-proof cuff forming sheet 60 is provided in each of the abdominal part A and the back part B, more specifically, in both end parts in the longitudinal direction of the absorbent main body 5. The absorbent main body 5 is covered from the skin contact surface side to the non-skin contact surface side, and the skin contact surface side of the absorbent main body 5 at each of the longitudinal ends of the absorbent main body 5 Are joined by known joining means such as heat sealing, high frequency sealing, ultrasonic sealing, hot melt adhesive and the like.

前記防漏カフ6は、図5に示すように、少なくとも股下部Cにおいて起立可能である。該防漏カフ6の自由端には、複数本の前記弾性部材61が前記吸収性本体5の幅方向に並べた状態で固定されている。斯かる構成により、起立した防漏カフ6の先端部分が着用者の肌に面接触するようになり、その結果、おむつの体への密着性が高まって防漏性が向上すると共に、おむつを肌にやさしく接触させることが可能となる。   The leak-proof cuff 6 can stand up at least at the crotch part C as shown in FIG. A plurality of the elastic members 61 are fixed to the free end of the leak-proof cuff 6 in a state of being arranged in the width direction of the absorbent main body 5. With such a configuration, the tip end portion of the standing leak-proof cuff 6 comes into surface contact with the wearer's skin, and as a result, the adhesion to the body of the diaper is improved and the leak-proof property is improved, and the diaper is removed. It is possible to gently contact the skin.

第1実施形態のおむつ1の各部を構成する材料としては、当該技術分野において通常用いられているものを特に制限無く用いることができる。
例えば、表面シート2としては、親水性且つ液透過性の不織布や、開孔フィルムを用いることができる。裏面シート3としては、液不透過性の材料や撥水性の材料を用いることができる。液不透過性の材料としては、樹脂フィルムや、樹脂フィルムと不織布等とのラミネート材等を用いることができ、撥水性の材料としては、撥水性不織布等を用いることができる。撥水性不織布としては、防漏カフ形成用シートとして後述する不織布を用いることができる。
As a material which comprises each part of the diaper 1 of 1st Embodiment, what is normally used in the said technical field can be especially used without a restriction | limiting.
For example, as the surface sheet 2, a hydrophilic and liquid-permeable nonwoven fabric or an apertured film can be used. As the back sheet 3, a liquid-impermeable material or a water-repellent material can be used. As the liquid-impermeable material, a resin film, a laminate material of a resin film and a nonwoven fabric, or the like can be used. As the water-repellent material, a water-repellent nonwoven fabric or the like can be used. As the water-repellent nonwoven fabric, a nonwoven fabric described later as a leak-proof cuff forming sheet can be used.

吸水性コア4としては、パルプ繊維等からなる繊維集合体、又は繊維集合体と吸水性ポリマーとからなるもの(吸水性ポリマーと繊維材料との混合積繊物)等を用いることができる。吸水性ポリマーとしては、例えば、ポリアクリル酸ナトリウム、(アクリル酸−ビニルアルコール)共重合体、ポリアクリル酸ナトリウム架橋体、(でんぷん−アクリル酸)グラフト共重合体、(イソブチレン−無水マレイン酸)共重合体及びそのケン化物、ポリアスパラギン酸等が挙げられる。吸収性コア4を構成する繊維としては、例えば、パルプ繊維、レーヨン繊維、コットン繊維、酢酸セルロース等の親水性繊維、ポリエチレン、ポリプロピレン等のポリオレフィン系繊維、ポリエステル、ポリアミド等の縮合系繊維等を用いることできる。吸水性ポリマー及び繊維は、それぞれ一種又は二種以上を組み合わせて用いることができる。   As the water-absorbent core 4, a fiber aggregate made of pulp fibers or the like, or a fiber aggregate and a water-absorbent polymer (mixed product of water-absorbent polymer and fiber material) can be used. Examples of water-absorbing polymers include sodium polyacrylate, (acrylic acid-vinyl alcohol) copolymer, cross-linked sodium polyacrylate, (starch-acrylic acid) graft copolymer, and (isobutylene-maleic anhydride) copolymer. Examples thereof include a polymer and a saponified product thereof, and polyaspartic acid. Examples of the fibers constituting the absorbent core 4 include hydrophilic fibers such as pulp fibers, rayon fibers, cotton fibers, and cellulose acetate, polyolefin fibers such as polyethylene and polypropylene, and condensation fibers such as polyester and polyamide. I can. The water-absorbing polymer and the fiber can be used alone or in combination of two or more.

防漏カフ形成用のシート60としては、スパンボンド・メルトブローン・スパンボンド等からなる多層構造の複合不織布、スパンボンド不織布、ヒートボンド不織布、エアスルー不織布等を用いることができ、柔軟性、耐水性などの点から、スパンボンドとメルトブローンとからなる多層構造の不織布が好ましく、坪量は12g/m2程度が好ましい。 As the sheet 60 for forming a leak-proof cuff, a composite nonwoven fabric having a multilayer structure composed of spunbond, meltblown, spunbond, etc., a spunbond nonwoven fabric, a heat bond nonwoven fabric, an air-through nonwoven fabric, etc. can be used, and flexibility, water resistance, etc. from the viewpoint of nonwoven fabric is preferably a multilayer structure composed of spunbond and meltblown basis weight about 12 g / m 2 is preferred.

防漏カフ形成用シートは、JIS L1092(1998年度)繊維製品の防水性試験方法における、耐水度試験(低水圧法)に準じて測定した耐水圧が3cm以上であることが好ましく、より好ましくは5cm以上である。耐水圧の測定の際には、水を入れた水準装置を10±0.5cm/minの速度で上昇させ、試験片の裏側に3カ所から水がでたことを目視にて観察し、その時点の水位を測定する。尚、試験片の取り付けが完了したら遅滞なく測定する。   The sheet for forming a leak-proof cuff preferably has a water pressure of 3 cm or more, more preferably measured according to a water resistance test (low water pressure method) in the waterproof test method for textile products of JIS L1092 (1998). 5 cm or more. When measuring the water pressure resistance, the level device filled with water was raised at a speed of 10 ± 0.5 cm / min, and it was visually observed that water came out from three places on the back side of the test piece. Measure the water level at the time. In addition, it will measure without delay when the installation of the test piece is completed.

防漏カフ形成用の弾性部材61の形態としては、糸状のもの(糸ゴム等)、所定幅の帯状のもの(平ゴム等)等が好ましく、特に糸状のものが好ましい。弾性部材61の素材としては、天然ゴム、スチレン−ブタジエン、ブタジエン、イソプレン、ネオプレン等の合成ゴム、EVA、伸縮性ポリオレフィン、ウレタン等を挙げることができる。また、弾性部材9,71,81,91の形態としては、糸状のもの及び所定幅の帯状のもの、更には薄膜状のもの等を用いることもできる。それらの素材としては、弾性部材61の素材として記載したものを用いることができる。   As the form of the elastic member 61 for forming the leak-proof cuff, a thread-like member (thread rubber or the like), a belt-like member having a predetermined width (flat rubber or the like) or the like is preferable, and a thread-like member is particularly preferable. Examples of the material of the elastic member 61 include natural rubber, synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, EVA, stretchable polyolefin, urethane, and the like. Moreover, as a form of the elastic members 9, 71, 81, 91, a thread-like member, a belt-like member having a predetermined width, a thin-film member, or the like can be used. As those materials, those described as the materials of the elastic member 61 can be used.

第1実施形態のおむつ1によれば、上述したように、特徴的な形態を有する前記吸収性コア4を用いているので、着用状態で股下部がだぶつかず、おむつの外観がすっきりしていて、股下部でのフィット性及び防漏性に優れている。また、前記中央吸収体41と前記サイド吸収体42との間に前記切離部43が存在するので、該サイド吸収体42のパルプ及びポリマーの坪量が大きい場合でも良好な起立性を達成することができる。更に、該吸収性コア4は、該中央吸収体41と該サイド吸収体42,42とが連接されていて、従来の3分割形態の吸収性コアのように完全に分離していないので、おむつ1の製造時における取扱いが容易であり、おむつ1における所定の配置箇所に高精度で安定的に配置することができるため、優れた特性を有するおむつ1を効率よく安定的に製造することができる。   According to the diaper 1 of 1st Embodiment, as mentioned above, since the said absorptive core 4 which has a characteristic form is used, a crotch part does not bump in a wearing condition, and the external appearance of a diaper is neat. Excellent fit and leakage prevention at the crotch. Moreover, since the said separation part 43 exists between the said center absorber 41 and the said side absorber 42, even when the basic weight of the pulp and polymer of this side absorber 42 is large, it achieves a favorable standing property. be able to. Further, the absorbent core 4 is such that the central absorbent body 41 and the side absorbent bodies 42 and 42 are connected to each other and are not completely separated like the conventional absorbent core in the three-part form. Since the handling at the time of manufacture of 1 is easy and it can be stably arrange | positioned in the predetermined arrangement | positioning location in the diaper 1 with high precision, the diaper 1 which has the outstanding characteristic can be manufactured efficiently and stably. .

また、第1実施形態のおむつ1においては、前記中央吸収体41の長手方向一方部Fが腹側部Aに位置するように配されていると共に、前記吸収性コア4が、前記上部吸収体411と前記下部吸収体412とから形成されており、該吸収性コア4の吸収容量を前(腹)側に偏在させてあるので、特に、前側からの漏れに対する防止性能に優れており、例えば、幼児用おむつ用途においては、うつ伏せ状態の幼児が使用する際でも、前側からの漏れを防止させることができる。   Moreover, in the diaper 1 of 1st Embodiment, while arrange | positioning so that the longitudinal direction one part F of the said center absorber 41 may be located in the ventral | abdominal side part A, the said absorptive core 4 is the said upper absorber. 411 and the lower absorbent body 412, and the absorption capacity of the absorbent core 4 is unevenly distributed on the front (abdominal) side, and is particularly excellent in prevention performance against leakage from the front side. In diaper use for infants, leakage from the front side can be prevented even when a prone infant is used.

また、第1実施形態のおむつ1においては、前記外装体10の肌当接面側に、液不透過性の裏面シート3が接合されており、前記サイド吸収体42の非肌当接面側は液透過性の前記表面シート2で覆われているため、該サイド吸収体42の非肌当接面側からの液の吸収が可能であり、防漏性に特に優れている。また、裏面シート3に各種模様や製造業者のブランドマークなどの印刷模様が施してある場合には、該裏面シート3が外装体10に隣接して配置されているので、該印刷模様の外部からの視認性が高まるというメリットもある。   Moreover, in the diaper 1 of 1st Embodiment, the liquid impervious back surface sheet 3 is joined to the skin contact surface side of the exterior body 10, and the non-skin contact surface side of the side absorber 42 Since it is covered with the liquid-permeable top sheet 2, it can absorb the liquid from the non-skin contact surface side of the side absorbent body 42, and is particularly excellent in leakage prevention. In addition, when the back sheet 3 is printed with various patterns or a manufacturer's brand mark or the like, the back sheet 3 is disposed adjacent to the exterior body 10, so that the outside of the printed pattern is There is also a merit that visibility of is increased.

また、第1実施形態のおむつ1においては、前記接合固定部67が前記最内側点Pよりおむつ幅方向内方にあり、該接合固定部67よりおむつ幅方向外方に、前記吸収性本体5の側部(前記サイド吸収体42)立ち上げ用の弾性部材9が配されているので、該吸収性本体5の両側部52,52及び防漏カフ6,6が、股下部Cにおいて着用者の肌に向かって大きく起立するようになり(図5参照)、その結果、おむつの防漏性能が向上する。即ち、このような構成であれば、股下部Cに、前後左右に立ち上がり部を有する吸収性本体5による凹状のポケットが形成されやすく、該ポケット内からの排泄物の漏れ出しが生じにくく、多量の尿が短時間にまとまって排泄されたり、吸収されにくい水状便や軟便等が排泄された場合等においても、該ポケットから排泄物が漏れ出し難い。該ポケットから排泄物が漏れ出した場合であっても、吸収性本体5の両側に防漏カフ6が存在し、吸収性本体5の立ち上がった側部52と、防漏カフ形成用シート60との間に排泄物の保持性に優れたポケットQ形成されるため、その排泄物が、外装体10の側縁部を超えて漏れ出すことを防止することができる。また、防漏カフ6が着用者の肌に面接触し、吸収性本体5の起立した側部52が着用者の肌に直接接触しにくくなっているため、着用時に違和感を感じにくくなっている。   Moreover, in the diaper 1 of 1st Embodiment, the said junction fixing | fixed part 67 exists in the diaper width direction inside from the said innermost point P, and the said absorptive main body 5 is located in the diaper width direction outer side from this said junction fixing | fixed part 67. Since the elastic member 9 for starting up the side portion (the side absorbent body 42) is arranged, the side portions 52, 52 and the leak-proof cuffs 6, 6 of the absorbent main body 5 are worn by the wearer at the crotch portion C. As a result, the leakage prevention performance of the diaper is improved. That is, with such a configuration, a concave pocket is easily formed in the crotch part C by the absorbent main body 5 having standing parts on the front, rear, left, and right, and it is difficult for excrement to leak out from the pocket. Even when urine is excreted in a short period of time, or when watery stool or loose stool that is difficult to be absorbed is excreted, excrement is difficult to leak from the pocket. Even when excrement leaks from the pocket, the leak-proof cuff 6 is present on both sides of the absorbent main body 5, the side portion 52 of the absorbent main body 5 rising, the leak-proof cuff forming sheet 60, Since the pocket Q having excellent excrement retention is formed during the period, the excrement can be prevented from leaking beyond the side edge of the outer package 10. Moreover, since the leak-proof cuff 6 is in surface contact with the wearer's skin and the standing side portion 52 of the absorbent main body 5 is less likely to be in direct contact with the wearer's skin, it is difficult to feel discomfort when worn. .

以下に、本発明の第2〜第4実施形態について説明する。尚、以下の各実施形態において説明を省略した箇所については、上述した第1実施形態の説明が適用される。   Below, 2nd-4th embodiment of this invention is described. In addition, the description of 1st Embodiment mentioned above is applied to the location which abbreviate | omitted description in each following embodiment.

図6は、本発明の第2実施形態における図5相当図である。この第2実施形態は、前記裏面シート3の配設部位が異なっている点以外は、上述した第1実施形態と同様に構成されている。即ち、第2実施形態では、前記吸収性本体5が、前記吸収性コア4の非肌当接面4c側の全域を被覆する液不透過性の前記裏面シート3を有し、該裏面シート3が、該吸収性コア4と該吸収性コア4の非肌当接面4c側の幅方向両側部近傍を被覆する前記表面シート2との間に挟持固定されている。   FIG. 6 is a view corresponding to FIG. 5 in the second embodiment of the present invention. This 2nd Embodiment is comprised similarly to 1st Embodiment mentioned above except the point from which the arrangement | positioning site | part of the said back surface sheet 3 differs. That is, in 2nd Embodiment, the said absorptive main body 5 has the said liquid-impermeable back sheet 3 which coat | covers the whole region by the side of the non-skin contact surface 4c of the said absorbent core 4, This back sheet 3 Is sandwiched and fixed between the absorbent core 4 and the top sheet 2 covering the vicinity of both sides in the width direction of the absorbent core 4 on the non-skin contact surface 4c side.

図7は、吸収性コアの他の実施形態の平面図である。図7に示す吸収性コア4’は、その中央吸収体が、上述した下部吸収体412(一対の前記サイド吸収体が一体的に設けられている中央吸収体)のみから形成されている点以外は、第1実施形態と同様に構成されている。   FIG. 7 is a plan view of another embodiment of the absorbent core. The absorbent core 4 ′ shown in FIG. 7 has a central absorbent body other than the above-described lower absorbent body 412 (a central absorbent body in which the pair of side absorbent bodies are integrally provided). Is configured in the same manner as in the first embodiment.

図8は、本発明の第3実施形態における図5相当図であり、図9は、本発明の第4実施形態における図5相当図である。第3実施形態は、図7に示す吸収性コア4’を用いている点以外は、上述した第1実施形態と同様に構成されている。また、第4実施形態は、該吸収性コア4’を用いている点以外は、上述した第2実施形態と同様に構成されている。   FIG. 8 is a diagram corresponding to FIG. 5 in the third embodiment of the present invention, and FIG. 9 is a diagram corresponding to FIG. 5 in the fourth embodiment of the present invention. The third embodiment is configured in the same manner as the first embodiment described above except that the absorbent core 4 ′ shown in FIG. 7 is used. The fourth embodiment is configured in the same manner as the second embodiment described above except that the absorbent core 4 'is used.

以上、本発明の第1〜第4実施形態について説明したが、本発明は、上述した実施形態に制限されず、本発明の趣旨を逸脱しない範囲で種々変更が可能である。
例えば、上述した第1実施形態においては、前記中央吸収体41は、それぞれ独立した部材である前記上部吸収体411及び前記下部吸収体412から形成され、該上部吸収体411と該下部吸収体412とは分離可能であったが、本発明に係る中央吸収体は、上部吸収体及び下部吸収体が一体化されて(分離不可能に)形成されていてもよい。この場合の中央吸収体の形状は、該上部吸収体411及び該下部吸収体412をそれぞれ変形させずに上述したように重ね合わせてなる形状とすることが好ましく、また、該中央吸収体の各部の大きさは、上述の説明の通りとすることが好ましい。尚、該中央吸収体の坪量については、上述した上部吸収体411の坪量と下部吸収体412の坪量との合計値が好ましい。
As mentioned above, although 1st-4th embodiment of this invention was described, this invention is not restrict | limited to embodiment mentioned above, A various change is possible in the range which does not deviate from the meaning of this invention.
For example, in the first embodiment described above, the central absorbent body 41 is formed from the upper absorbent body 411 and the lower absorbent body 412 which are independent members, and the upper absorbent body 411 and the lower absorbent body 412 are formed. However, the central absorbent body according to the present invention may be formed by integrating the upper absorbent body and the lower absorbent body (inseparable). In this case, the shape of the central absorbent body is preferably a shape formed by overlapping the upper absorbent body 411 and the lower absorbent body 412 as described above without being deformed, and each part of the central absorbent body. Is preferably as described above. In addition, about the basic weight of this center absorber, the total value of the basic weight of the upper absorber 411 mentioned above and the basic weight of the lower absorber 412 is preferable.

また、上述した第1実施形態においては、前記吸収性コア4は、前記中央吸収体41の長手方向一方部Fが腹側部Aに位置するように配されていたが、本発明においては、これとは逆に、中央吸収体の長手方向他方部Rが腹側部に位置するように配してもよい。   Further, in the first embodiment described above, the absorbent core 4 is arranged so that one longitudinal part F of the central absorbent body 41 is located on the ventral side part A. In the present invention, On the contrary, you may arrange | position so that the longitudinal direction other part R of a center absorber may be located in a ventral | abdominal side part.

また、上述した第1実施形態においては、前記吸収性本体5の側部立ち上げ用の前記弾性部材9を前記吸収性コア4の両側部の全体に配したが、該弾性部材9の配設部位は特に限定されず、例えば、吸収性コア4とその肌当接面側に位置する表面シート2との間、あるいは吸収性コア4全体を被覆する前記被覆シート(図示せず)の内部等に配することもできる。但し、吸収性本体5の両側部52,52を、股下部Cにおいて着用者の肌に向かって大きく起立させるようにする観点から、弾性部材9は、吸収性コア4の両側縁部、あるいはその近傍に配することが好ましい。   Further, in the first embodiment described above, the elastic members 9 for raising the side portions of the absorbent main body 5 are arranged on both sides of the absorbent core 4. A part is not specifically limited, For example, between the absorptive core 4 and the surface sheet 2 located in the skin contact surface side, or the inside of the said covering sheet (not shown) which coat | covers the absorptive core 4 whole etc. Can also be arranged. However, from the viewpoint of causing both side portions 52, 52 of the absorbent main body 5 to stand largely toward the wearer's skin in the crotch part C, the elastic member 9 is provided on both side edges of the absorbent core 4 or its edges. It is preferable to arrange in the vicinity.

また、上述した第1実施形態のおむつは、パンツ型の使い捨ておむつであったが、本発明の使い捨ておむつは、おむつ止着用のファスニングテープが設けられた、いわゆる展開型の使い捨ておむつであっても良い。   Moreover, although the diaper of 1st Embodiment mentioned above was a pants-type disposable diaper, the disposable diaper of this invention may be what is called a deployment-type disposable diaper provided with the fastening tape for diaper fastening. good.

本発明の第1実施形態としてのパンツ型おむつの斜視図である。It is a perspective view of the underpants type diaper as a 1st embodiment of the present invention. 図1に示すおむつをサイドシール部で切り離して展開し、各部の弾性部材を伸張させて平面状に拡げた状態を一部破断して示す平面図である。FIG. 2 is a plan view illustrating a state in which the diaper illustrated in FIG. 1 is separated and expanded by a side seal portion, and a state in which an elastic member of each portion is expanded and expanded in a planar shape is partially broken. 図1に示すおむつにおける吸収性コアの平面図である。It is a top view of the absorptive core in the diaper shown in FIG. 図2のI−I線断面を模式的に示す横断面図である。FIG. 3 is a cross-sectional view schematically showing a cross section taken along line II of FIG. 2. おむつ使用状態における図2のII−II線断面を模式的に示す横断面図である。It is a cross-sectional view which shows typically the II-II line | wire cross section of FIG. 2 in a diaper use state. 本発明の第2実施形態における図5相当図である。FIG. 6 is a view corresponding to FIG. 5 in a second embodiment of the present invention. 本発明に係る吸収性コアの他の実施形態の平面図である。It is a top view of other embodiments of an absorptive core concerning the present invention. 図7に示す吸収性コアを用いた本発明の第3実施形態のおむつにおける図5相当図である。It is FIG. 5 equivalent view in the diaper of 3rd Embodiment of this invention using the absorptive core shown in FIG. 図7に示す吸収性コアを用いた本発明の第4実施形態のおむつにおける図5相当図である。It is the FIG. 5 equivalent view in the diaper of 4th Embodiment of this invention using the absorptive core shown in FIG.

符号の説明Explanation of symbols

1 使い捨ておむつ
2 表面シート
3 裏面シート
4,4’ 吸収性コア
41 中央吸収体
411 上部吸収体
412 下部吸収体
42 サイド吸収体
43 切離部
5 吸収性本体
6 防漏カフ
60 防漏カフ形成用シート
61 防漏カフ形成用の弾性部材
67 接合固定部
9 吸収性本体の側部(サイド吸収体)立ち上げ用の弾性部材
10 外装体
A 腹側部
B 背側部
C 股下部
F 長手方向一方部
M 長手方向中央部
R 長手方向他方部

DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Top sheet 3 Back sheet 4, 4 'Absorbent core 41 Central absorber 411 Upper absorbent body 412 Lower absorbent body 42 Side absorbent body 43 Cut off part 5 Absorbent main body 6 Leak-proof cuff 60 For leak-proof cuff formation Sheet 61 Elastic member for forming a leak-proof cuff 67 Joint fixing part 9 Elastic member 10 for starting up side part (side absorber) of absorbent main body Exterior body A Abdominal side part B Back side part C Crotch part F Longitudinal direction one Part M Longitudinal center R The other longitudinal part

Claims (10)

表面シートと吸収性コアとを有する吸収性本体を具備する使い捨ておむつにおいて、
前記吸収性本体は、股下部における両側部が起立するようになされており、
前記吸収性本体の両側に、該吸収性本体に接合された防漏カフ形成用シート及び該防漏カフ形成用シートに伸長状態で固定された弾性部材を備えた、防漏カフが形成されており、
前記吸収性コアは、中央吸収体と、該中央吸収体の長手方向一方部で連接され且つ該中央吸収体の両側部に設けられた一対のサイド吸収体とを具備し、該中央吸収体と一対の該サイド吸収体との間にそれぞれ切離部を有しており、該切離部はそれぞれ該中央吸収体の少なくとも長手方向中央部の両側部に設けられ且つ長手方向他方部の両側部に開放されており、前記サイド吸収体は、少なくとも股下部に配される使い捨ておむつ。
In a disposable diaper comprising an absorbent main body having a topsheet and an absorbent core,
The absorbent main body is configured such that both sides of the crotch stand upright,
On both sides of the absorbent main body, there is formed a leak-proof cuff comprising a leak-proof cuff forming sheet joined to the absorbent main body and an elastic member fixed to the leak-proof cuff forming sheet in an expanded state. And
The absorbent core includes a central absorbent body and a pair of side absorbent bodies that are connected to each other in the longitudinal direction of the central absorbent body and provided on both sides of the central absorbent body. Each of the pair of side absorbers has a separation portion, and each of the separation portions is provided at both sides of at least the central portion in the longitudinal direction of the central absorber and both sides of the other longitudinal portion. A disposable diaper that is open at least and is disposed at least in the crotch.
前記吸収性コアは、前記中央吸収体の前記サイド吸収体との連接部が腹側部に位置するように配されている請求項1記載の使い捨ておむつ。   The disposable diaper according to claim 1, wherein the absorbent core is disposed such that a connecting portion between the central absorbent body and the side absorbent body is located on a ventral side part. 前記中央吸収体は、上部吸収体と下部吸収体とからなり、該上部吸収体は、該下部吸収体の長手方向一方部から長手方向中央部に亘りそれらの肌当接面側に重ね合わされている請求項1又は2記載の使い捨ておむつ。   The central absorbent body is composed of an upper absorbent body and a lower absorbent body, and the upper absorbent body is overlapped on the skin contact surface side from one longitudinal direction portion of the lower absorbent body to the longitudinal central portion. The disposable diaper according to claim 1 or 2. 前記中央吸収体の長手方向中央部の幅は、30〜80mmである請求項1〜3の何れかに記載の使い捨ておむつ。   The disposable diaper according to any one of claims 1 to 3, wherein a width of a central portion in the longitudinal direction of the central absorbent body is 30 to 80 mm. 前記サイド吸収体は、長さ100〜270mm、幅10〜50mmであり、且つ
前記切離部の閉鎖端部の長手方向先端が、該先端に最も近い前記吸収性コアの長手方向一側縁から該吸収性コア全長の10〜40%部分に位置し、且つ
前記サイド吸収体における前記切離部の開放端部近傍の長手方向先端が、前記吸収性コアの長手方向他側縁から該吸収性コア全長の10〜40%部分に位置している請求項1〜4の何れかに記載の使い捨ておむつ。
The side absorbent body has a length of 100 to 270 mm and a width of 10 to 50 mm, and a longitudinal end of the closed end of the separation portion is from one side edge in the longitudinal direction of the absorbent core closest to the end. The longitudinal tip in the vicinity of the open end of the cut-off portion of the side absorbent body is located at 10 to 40% of the entire length of the absorbent core, and the absorbent absorbs from the other longitudinal edge of the absorbent core. The disposable diaper in any one of Claims 1-4 located in 10 to 40% part of core full length.
前記表面シートは、前記吸収性コアの肌当接面側の全域及び該吸収性コアの幅方向両側縁部の全域を被覆し、且つ該吸収性コアの非肌当接面側の幅方向両側部近傍を被覆し、該表面シートの両側端部において前記防漏カフ形成用シートに接合固定されている請求項1〜5の何れかに記載の使い捨ておむつ。   The surface sheet covers the entire area of the absorbent core on the skin contact surface side and the entire area of both edges in the width direction of the absorbent core, and both widthwise sides of the absorbent core on the non-skin contact surface side. The disposable diaper in any one of Claims 1-5 which coat | covers the part vicinity and is joined and fixed to the said sheet | seat for leak-proof cuff formation in the both-sides edge part of this surface sheet. 前記吸収性本体の非肌当接面側に外装体を具備し、該外装体の肌当接面側に、液不透過性の裏面シートが接合され、該裏面シートの肌当接面側に、前記防漏カフ形成用シート及び該吸収性本体が順次接合されており、
前記吸収性本体は、その非肌当接面側のおむつ幅方向の中央部に、前記吸収性コアが前記表面シートで被覆されていない非被覆部を有しており、
前記防漏カフ形成用シートは、前記非被覆部に対応する部分に配されていない請求項6記載の使い捨ておむつ。
Provided with an exterior body on the non-skin contact surface side of the absorbent main body, a liquid-impermeable back sheet is bonded to the skin contact surface side of the exterior body, and on the skin contact surface side of the back sheet The leakage prevention cuff forming sheet and the absorbent main body are sequentially joined,
The absorbent main body has a non-covered portion in which the absorbent core is not covered with the top sheet at the center of the diaper width direction of the non-skin contact surface side,
The disposable diaper according to claim 6, wherein the leak-proof cuff forming sheet is not disposed in a portion corresponding to the non-covering portion.
前記吸収性本体は、前記吸収性コアの非肌当接面側の全域を被覆する液不透過性の裏面シートを有し、該裏面シートは、該吸収性コアと該吸収性コアの非肌当接面側のおむつ幅方向両側部近傍を被覆する前記表面シートとの間に挟持固定されている請求項6記載の使い捨ておむつ。   The absorbent main body has a liquid-impermeable back sheet that covers the entire area of the absorbent core on the non-skin contact surface side, and the back sheet is formed of the absorbent core and the non-skin of the absorbent core. The disposable diaper according to claim 6, wherein the disposable diaper is sandwiched and fixed between the surface sheet covering the vicinity of both side portions in the diaper width direction of the contact surface side. 前記表面シートの側端部と前記防漏カフ形成用シートとの接合固定部は、前記サイド吸収体のおむつ幅方向における最内側点よりおむつ幅方向内方にあり、該接合固定部よりおむつ幅方向外方に、前記サイド吸収体立ち上げ用の弾性部材が配されている請求項6〜8の何れかに記載の使い捨ておむつ。   The joint fixing portion between the side end portion of the topsheet and the leakage-proof cuff forming sheet is located inward in the diaper width direction from the innermost point in the diaper width direction of the side absorber, and the diaper width is greater than the joint fixing portion. The disposable diaper according to any one of claims 6 to 8, wherein an elastic member for raising the side absorbent body is disposed outward in the direction. 前記弾性部材が、前記吸収性コアの両側縁部の全体に亘って配されている請求項9記載の使い捨ておむつ。

The disposable diaper of Claim 9 with which the said elastic member is distribute | arranged over the whole both-sides edge part of the said absorptive core.

JP2004337077A 2004-11-22 2004-11-22 Disposable diapers Expired - Fee Related JP4159539B2 (en)

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JP2008237252A (en) * 2007-03-23 2008-10-09 Kao Corp Disposable diaper
WO2010007872A1 (en) * 2008-07-18 2010-01-21 大王製紙株式会社 Disposable diaper
EP2177187A1 (en) 2008-10-17 2010-04-21 Livedo Corporation Multiple folded side barriers for leakage protection in an absorbent product
JP2010269002A (en) * 2009-05-22 2010-12-02 Daio Paper Corp Absorptive article
JP2012061186A (en) * 2010-09-17 2012-03-29 Kao Corp Underpants-type absorbent article
JP2013102888A (en) * 2011-11-11 2013-05-30 Kao Corp Underpants type absorbent article
KR20160137547A (en) 2014-03-25 2016-11-30 유니 참 코포레이션 Absorbent product
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Publication number Priority date Publication date Assignee Title
JP2008237252A (en) * 2007-03-23 2008-10-09 Kao Corp Disposable diaper
WO2010007872A1 (en) * 2008-07-18 2010-01-21 大王製紙株式会社 Disposable diaper
JP2010022586A (en) * 2008-07-18 2010-02-04 Daio Paper Corp Disposable diaper
JP4685135B2 (en) * 2008-07-18 2011-05-18 大王製紙株式会社 Disposable diapers
EP2177187A1 (en) 2008-10-17 2010-04-21 Livedo Corporation Multiple folded side barriers for leakage protection in an absorbent product
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JP2012061186A (en) * 2010-09-17 2012-03-29 Kao Corp Underpants-type absorbent article
JP2013102888A (en) * 2011-11-11 2013-05-30 Kao Corp Underpants type absorbent article
KR20160137547A (en) 2014-03-25 2016-11-30 유니 참 코포레이션 Absorbent product
WO2021230782A1 (en) * 2020-05-14 2021-11-18 Essity Hygiene And Health Aktiebolag Pant-type absorbent article
CN115443119A (en) * 2020-05-14 2022-12-06 易希提卫生与保健公司 Pants-type absorbent article

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