JP2021007516A5

JP2021007516A5 -

Info

Publication number: JP2021007516A5
Application number: JP2019122080A
Authority: JP
Filing date: 2019-06-28
Publication date: 2022-03-18
Anticipated expiration: 2039-06-28

Description

本発明は、吸収性コアと該吸収性コアの肌面側及び非肌面側を覆うコアラップシートとを有する吸収体を備えた吸収性物品であって、前記吸収性コアの肌面側及び非肌面側の少なくとも一方に、Ｌ^＊ａ^＊ｂ^＊表色系でＬ^＊値：４０以上１００以下、ａ^＊値：－１２以上３以下、ｂ^＊値：－２４以上３以下の範囲の色を有する部材があり、前記吸収性コアが、高吸収性ポリマーとパルプ繊維との集合体であり、前記吸収性コアの肌面側に前記高吸収性ポリマーが配されており、前記吸収性コアの肌面側には、前記吸収性コアと前記コアラップシートとの接合部が配されており、前記吸収性コアの肌面側の少なくとも一部において、前記接合部によって前記高吸収性ポリマーを囲む部屋が配置され、前記高吸収性ポリマーの配された領域が区画されている吸収性物品を提供する。
The present invention is an absorbent article comprising an absorbent body having an absorbent core and a core wrap sheet covering the skin surface side and the non-skin surface side of the absorbent core, the skin surface side of the absorbent core and the skin surface side of the absorbent core. On at least one of the non-skin side, L ^* a ^* b ^* color system L ^* value: 40 or more and 100 or less, a ^* value: -12 or more and 3 or less, b ^* value: -24 or more and 3 or less There is a member having a color, the absorbent core is an aggregate of a highly absorbent polymer and a pulp fiber, and the highly absorbent polymer is arranged on the skin surface side of the absorbent core, and the absorbent core is arranged. A joint portion between the absorbent core and the core wrap sheet is arranged on the skin surface side of the core, and at least a part of the skin surface side of the absorbent core has the high absorbency due to the joint portion. An absorbent article is provided in which a room surrounding the polymer is arranged and the area in which the highly absorbent polymer is arranged is partitioned.

（吸収性コア６にける高吸収性ポリマー６７の坪量の測定方法）
まず、吸収性コア６の測定対象部分の断面をマイクロスコープで観察しながら厚み方向に２等分して、表面部６１及び裏面部６２の各部位を採取する。
採取した各部位について、特許第４２２５８２１号公報に記載の繊維及び／又は吸水性ポリマーの定量方法に基づき、高吸収性ポリマー６７とパルプ繊維６８の混合物のそれぞれを定量化し、高吸収性ポリマー６７の質量を算出する。
具体的には、採取した各部位の質量を測定した後、各部位において、高吸収性ポリマー６７を低分子量化する。高吸収性ポリマー６７の低分子量化は紫外線照射によって行うことができる。その際、採取した各部位の高吸収性ポリマー６７とパルプ繊維６８の混合物をメッシュ袋などに入れた状態で、アスコルビン酸及びリボフラビンを含む水溶液中に浸漬する。浸漬によって高吸収性ポリマーを膨潤させた後、前記メッシュ袋を水溶液から取り出して、上記の紫外線照射を行い、高吸収性ポリマー６７の低分子量化を行う。次いで、低分子量化により生じた成分を水洗いによって除去する。除去したメッシュ袋を充分に水洗いした後、脱水及び乾燥して質量を測定する。測定した質量からメッシュ袋単体の質量を差し引いてパルプ繊維６８の質量を算出し、最初に測定した各部位の質量からパルプ繊維６８の質量を差し引いて高吸収性ポリマー６７の質量を得る。これらを基に、各部位の面積で除して、各部位における高吸収性ポリマー６７の坪量を得る。上記の測定を３回行い得た平均値を、表面部６１及び裏面部６２の各部位における高吸収性ポリマー６７の坪量とする。
(Method for measuring the basis weight of the highly absorbent polymer 67 in the absorbent core 6)
First, the cross section of the measurement target portion of the absorbent core 6 is divided into two equal parts in the thickness direction while observing with a microscope, and each portion of the front surface portion 61 and the back surface portion 62 is collected.
For each of the collected sites, each of the mixture of the superabsorbent polymer 67 and the pulp fiber 68 was quantified based on the method for quantifying the fiber and / or the water-absorbent polymer described in Japanese Patent No. 4225821, and the superabsorbent polymer 67 was obtained. Calculate the mass.
Specifically, after measuring the mass of each of the collected sites, the highly absorbent polymer 67 is reduced in molecular weight at each site. The low molecular weight of the highly absorbent polymer 67 can be reduced by irradiation with ultraviolet rays. At that time, a mixture of the highly absorbent polymer 67 and the pulp fiber 68 of each collected portion is placed in a mesh bag or the like and immersed in an aqueous solution containing ascorbic acid and riboflavin. After swelling the highly absorbent polymer by immersion, the mesh bag is taken out from the aqueous solution and irradiated with the above-mentioned ultraviolet rays to reduce the molecular weight of the highly absorbent polymer 67. Then, the components produced by the reduction in molecular weight are removed by washing with water. After thoroughly washing the removed mesh bag with water, dehydrate and dry it to measure the mass. The mass of the pulp fiber 68 is calculated by subtracting the mass of the mesh bag alone from the measured mass, and the mass of the pulp fiber 68 is subtracted from the mass of each portion measured first to obtain the mass of the highly absorbent polymer 67. Based on these, the area of each site is divided to obtain the basis weight of the highly absorbent polymer 67 at each site. The average value obtained by performing the above measurements three times is taken as the basis weight of the highly absorbent polymer 67 at each site of the front surface portion 61 and the back surface portion 62.

上記のようなスリット部８は、吸収性コア６に対して切込みを加える方法の他、回転ドラムの外周面に配された集積用凹部において、スッリト部８となるべき部位に非通気性の凸部を設けることで製造できる。
In addition to the method of making a notch in the absorbent core 6, the slit portion 8 as described above is non-breathable in the portion to be the slit portion 8 in the accumulation recess arranged on the outer peripheral surface of the rotating drum. It can be manufactured by providing a convex portion.

色調変化剤の具体例として、表面シート３の構成繊維の成分とは屈折率の異なる無機紛体、有機紛体などが挙げられる。
無機紛体としては、例えば、酸化チタン、多孔質酸化ケイ素（シリカ）、多孔質シリカ、酸化アルミニウム（アルミナ）、石灰、粘土鉱物が挙げられる。粘土鉱物としては、スメクタイト、モンモリナイト、ベントナイト、カオリナイト、セリサイト、イライト、グローコナイト、クロライト、ゼオライト、タルク、ミズカナイト、等が挙げられる。
有機紛体としては、ポリエチレン紛体、ポリエステル紛体、ポリプロピレン紛体、ポリアクリル紛体、ポリアクリレート紛体、セルロース紛体、ビスコース紛体、シルク紛体、シリコーン化合物紛体、フッ素化合物紛体、等が挙げられる。またこれらの有機紛体を色素によって着色したものが挙げられる。中でも、色調変化剤として酸化チタンを用いることが好ましい。
色調変化剤の配合量は、表面シート３の構成繊維全体を１００質量％として、０．１質量％以上が好ましく、１質量％以上がより好ましく、３質量％以上が更に好ましい。酸化チタンを表面シート３の構成繊維に一定量以上配合することで、効果的に光を散乱させることができる。一方、表面シート３の構成繊維への酸化チタンの配合量の上限値は、本発明の効果を奏するものであれば特に限定されないが、１０質量％以下が実際的である。
Specific examples of the color tone changing agent include inorganic powders and organic powders having a refractive index different from that of the constituent fibers of the surface sheet 3.
Examples of the inorganic powder include titanium oxide, porous silicon oxide (silica), porous silica, aluminum oxide (alumina), lime, and clay minerals. Examples of clay minerals include smectite, montmorillonite, bentonite, kaolinite, sericite, illite, gloconite, chlorite, zeolite, talc, and mizukanite.
Examples of the organic powder include polyethylene powder, polyester powder, polypropylene powder, polyacrylic powder, polyacrylate powder, cellulose powder, viscose powder, silk powder, silicone compound powder, fluorine compound powder and the like. Further, examples thereof include those obtained by coloring these organic powders with a dye. Above all, it is preferable to use titanium oxide as a color tone changing agent .
The blending amount of the color tone changing agent is preferably 0.1% by mass or more, more preferably 1% by mass or more, still more preferably 3% by mass or more, assuming that the entire constituent fibers of the surface sheet 3 are 100% by mass. By blending titanium oxide in a certain amount or more with the constituent fibers of the surface sheet 3, light can be effectively scattered. On the other hand, the upper limit of the amount of titanium oxide blended in the constituent fibers of the surface sheet 3 is not particularly limited as long as it exhibits the effect of the present invention, but is practically 10% by mass or less.

＜１＞
吸収性コアと該吸収性コアの肌面側及び非肌面側を覆うコアラップシートとを有する吸収体を備えた吸収性物品であって、
前記吸収性コアの肌面側及び非肌面側の少なくとも一方に、Ｌ^＊ａ^＊ｂ^＊表色系でＬ^＊値：４０以上１００以下、ａ^＊値：－１２以上３以下、ｂ^＊値：－２４以上３以下の範囲の色を有する部材があり、
前記吸収性コアが、高吸収性ポリマーとパルプ繊維との集合体であり、前記吸収性コアの肌面側に前記高吸収性ポリマーが配されており、
前記吸収性コアの肌面側には、前記吸収性コアと前記コアラップシートとの接合部が配されており、前記吸収性コアの肌面側の少なくとも一部において、前記接合部によって前記高吸収性ポリマーを囲む部屋が配置され、前記高吸収性ポリマーの配された領域が区画されている吸収性物品。
<1>
An absorbent article comprising an absorbent body having an absorbent core and a core wrap sheet covering the skin and non-skin sides of the absorbent core.
L ^* a ^* b ^* color system L ^* value: 40 or more and 100 or less, a ^* value: -12 or more and 3 or less, b ^* value on at least one of the skin surface side and the non-skin surface side of the absorbent core. : There is a member with a color in the range of -24 or more and 3 or less.
The absorbent core is an aggregate of a highly absorbent polymer and pulp fibers, and the highly absorbent polymer is arranged on the skin surface side of the absorbent core.
A joint portion between the absorbent core and the core wrap sheet is arranged on the skin surface side of the absorbent core, and at least a part of the absorbent core on the skin surface side is described by the joint portion. An absorbent article in which a room surrounding the highly absorbent polymer is arranged and an area in which the highly absorbent polymer is arranged is partitioned.

Claims

An absorbent article comprising an absorbent body having an absorbent core and a core wrap sheet covering the skin and non-skin sides of the absorbent core.
L ^* a ^* b ^* color system L ^* value: 40 or more and 100 or less, a ^* value: -12 or more and 3 or less, b ^* value on at least one of the skin surface side and the non-skin surface side of the absorbent core. : There is a member with a color in the range of -24 or more and 3 or less.
The absorbent core is an aggregate of a highly absorbent polymer and pulp fibers, and the highly absorbent polymer is arranged on the skin surface side of the absorbent core.
A joint portion between the absorbent core and the core wrap sheet is arranged on the skin surface side of the absorbent core, and at least a part of the absorbent core on the skin surface side is described by the joint portion. A room surrounding the highly absorbent polymer is arranged, and the area where the highly absorbent polymer is arranged is partitioned .
An absorbent article , wherein the color is within the range of complementary colors to the discolored color of the highly absorbent polymer .

The absorbent core has a longitudinal direction corresponding to the direction in which the front side, the inseam and the rear side of the wearer are connected and a width direction orthogonal to the longitudinal direction.
The absorbent article according to claim 1, wherein the chambers surrounding the highly absorbent polymer are arranged in a row in the longitudinal direction, and the rows are arranged in three or more rows in the width direction.

The absorbent article according to claim 1 or 2, wherein in the absorbent core, the basis weight of the highly absorbent polymer increases from the non-skin surface side to the skin surface side.

When the absorbent core is divided into a front surface portion located on the skin surface side and a back surface portion located on the non-skin surface side in the thickness direction, the basis weight of the highly absorbent polymer on the front surface portion is 40 g. The absorbent article according to any one of claims 1 to 3, which is / m ² or more.

The absorbent article according to any one of claims 1 to 4, wherein a surface sheet is arranged on the skin surface side of the absorber and an intermediate member is arranged between the absorber and the surface sheet.

The absorbent article according to claim 5, wherein the intermediate member is an achromatic color having an L ^* value of 50 or more and 80 or less, which is indicated by an L ^* a ^* b ^* color system.

The absorbent article according to any one of claims 1 to 6, wherein the absorber has a compression portion.

Claims 1 to 7 in which a slit portion is arranged in the absorbent core, and the core wrap sheets arranged on the skin surface side and the non-skin surface side of the absorbent core are adhered to each other by the slit portion. The absorbent article according to any one of the above .