JP2013099429A5

JP2013099429A5 -

Info

Publication number: JP2013099429A5
Application number: JP2011244854A
Authority: JP
Filing date: 2011-11-08
Publication date: 2015-04-02
Anticipated expiration: 2031-11-08

Description

かかる製造方法において、この発明が特徴とするところは、以下のとおりである。すなわち、前記２枚のシート片それぞれの連続体である第１ウエブと第２ウエブとを機械方向へ連続的に走行させる。前記第１ウエブにおいて前記第１区域に相当する部位の前記対向面に前記高吸水性ポリマー粒子を供給する一方、前記第２ウエブにおいて前記第１区域と前記第２区域とに相当する部位の前記対向面に、ホットメルト接着剤を塗布する。前記第１ウエブと前記第２ウエブとを重ね合わせることによって、前記第１区域と前記第２区域とを有する複合ウエブを形成して前記複合ウエブを前記機械方向へ走行させる。前記複合ウエブを前記機械方向へ走行させるように回転する第１案内ロール、第２案内ロール及び第３案内ロールに前記複合ウエブを順次接触させ、前記第１、第２及び第３案内ロールのうちで前記機械方向の上流側に位置する前記第１案内ロールと前記機械方向の下流側において前記第１案内ロールに隣接する前記第２案内ロールとの間では前記複合ウエブの走行方向の向きを、前記第１案内ロールに向かう前記複合ウエブの走行方向の向きに対して３０度以上、９０度未満の範囲で角度を変化させ、前記複合ウエブが下り勾配または上り勾配となるように走行させ、前記第２案内ロールと前記第３案内ロールとの間では前記複合ウエブが上り勾配または下り勾配となるように走行させる。 In this manufacturing method, the present invention is characterized as follows. That is, the first web and the second web, which are continuous bodies of the two sheet pieces, are continuously run in the machine direction. In the first web, the superabsorbent polymer particles are supplied to the facing surface of the portion corresponding to the first section, while the portion of the second web corresponding to the first section and the second section is supplied. A hot melt adhesive is applied to the opposite surface. By superposing the first web and the second web, a composite web having the first section and the second section is formed, and the composite web is run in the machine direction. The composite web is sequentially brought into contact with a first guide roll, a second guide roll, and a third guide roll that rotate so as to cause the composite web to travel in the machine direction, and among the first, second, and third guide rolls the in the direction of the running direction of the composite web between the second guide roll adjacent to the first guide roll at the downstream side of the first guide roll and the machine direction located on an upstream side of the machine direction, The angle is changed in a range of 30 degrees or more and less than 90 degrees with respect to the direction of the traveling direction of the composite web toward the first guide roll, and the composite web travels so as to have a downward slope or an upward slope, Between the second guide roll and the third guide roll, the composite web is caused to travel so as to have an upward slope or a downward slope .

Claims

The first area where the superabsorbent polymer particles are interposed between the opposing surfaces of the two sheet pieces, wherein at least one of the two overlapping sheet pieces is water permeable, and the opposing surface are joined to each other. A method for producing a water-absorbent article having a second area surrounding the first area,
The first web and the second web, which are continuous bodies of the two sheet pieces, are continuously run in the machine direction,
In the first web, the superabsorbent polymer particles are supplied to the facing surface of the portion corresponding to the first section, while the portion of the second web corresponding to the first section and the second section is supplied. Apply hot melt adhesive to the opposite surface,
Overlapping the first web and the second web to form a composite web having the first section and the second section, and running the composite web in the machine direction;
The composite web is sequentially brought into contact with a first guide roll, a second guide roll, and a third guide roll that rotate so as to cause the composite web to travel in the machine direction, and among the first, second, and third guide rolls the in the direction of the running direction of the composite web between the second guide roll adjacent to the first guide roll at the downstream side of the first guide roll and the machine direction located on an upstream side of the machine direction, The angle is changed in a range of 30 degrees or more and less than 90 degrees with respect to the direction of the traveling direction of the composite web toward the first guide roll, and the composite web travels so as to have a downward slope or an upward slope, The manufacturing method according to claim 1, wherein the composite web is caused to run so as to have an ascending slope or a descending slope between the second guide roll and the third guide roll .

The manufacturing method according to claim 1, wherein the first water-absorbing polymer particles are contained in a mass ratio of 30 to 300 g / m ² in the first area.

The coating amount of the hot melt adhesive per unit area in the second zone, manufacture according to claim 1 or 2 is applied in the same amount of the hot melt adhesive per unit area in the first zone Method.

The manufacturing method according to claim 1 or 2 , wherein an application amount of the hot melt adhesive per unit area in the second area is larger than an application amount of the hot melt adhesive per unit area in the first area.

Wherein the absorbent article manufacturing method according to any of claims 1 4 wherein said first zone is formed with a plurality.

Each of the said 2 sheet piece is water-permeable, The manufacturing method in any one of Claims 1-5 .

One of the two sheet pieces is water permeable, the other is either impermeable or hardly permeable, and the superabsorbent polymer particles are either impermeable or hardly permeable. the process according to any one of claims 1 5 which is bonded to the sheet piece is one.

The manufacturing method according to any one of claims 1 to 7 , wherein the sheet piece that is permeable is a hydrophilic nonwoven fabric formed of thermoplastic synthetic fibers.