JP4757031B2 - Method for manufacturing worn article - Google Patents

Method for manufacturing worn article Download PDF

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JP4757031B2
JP4757031B2 JP2006001167A JP2006001167A JP4757031B2 JP 4757031 B2 JP4757031 B2 JP 4757031B2 JP 2006001167 A JP2006001167 A JP 2006001167A JP 2006001167 A JP2006001167 A JP 2006001167A JP 4757031 B2 JP4757031 B2 JP 4757031B2
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side edge
divided
sheet
torso
composite sheet
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JP2007181543A (en
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豊志 梅林
修平 倉田
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Zuiko Corp
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Zuiko Corp
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Description

本発明は使い捨てオムツやパンツなどの着用物品の製造方法に関する。   The present invention relates to a method for manufacturing worn articles such as disposable diapers and pants.

従来より、オムツ本体の外装となる複合シートの流れ方向に対してコア部の長手方向が略直交した横流れで搬送し、オムツを製造する方法が知られている(たとえば、特許文献1)。
また、弾性部材が配置された複合シートを搬送方向に沿って切断して拡幅した後、拡幅された両複合シートに吸収体を跨がるように配置する横流れの製造方法が知られている(特許文献2)。
特開2004−33549号(図3) 特開2002−272781号(図2)
Conventionally, a method of manufacturing a diaper by transporting it in a transverse flow in which the longitudinal direction of the core portion is substantially orthogonal to the flow direction of a composite sheet serving as an exterior of the diaper body has been known (for example, Patent Document 1).
Moreover, after the composite sheet in which the elastic member is disposed is cut and widened in the conveying direction, a method for producing a lateral flow is known in which the composite sheet is disposed so as to straddle the absorbent body on both the widened composite sheets ( Patent Document 2).
JP 2004-33549 A (FIG. 3) JP 2002-272781 (FIG. 2)

ここで、図1Bに示すように、前記複合シートWを形成する際には、機械的な誤差等により、積層されたウエブの両側縁部W1s,W2sにズレが生じるので、この部分が一重となるから、この部分のシートに腰がなくなる。また、最終製品の見栄えが良くない。そのため、複合シートの両側縁部をそれぞれ折り返すことにより、シートに腰を持たせると共に、前記ウエブのズレを目立たなくする方法が実施されている。
しかし、かかる従来の方法では、前記複合シートに折り返し分を加えた幅のウエブが必要になるためコストアップは免れない。
Here, as shown in FIG. 1B, when the composite sheet W is formed, the side edges W1s and W2s of the laminated web are displaced due to mechanical errors and the like. Therefore, the seat of this part is lost. Also, the final product does not look good. For this reason, a method has been implemented in which both sides of the composite sheet are folded back so that the sheet has a waist and the deviation of the web is inconspicuous.
However, such a conventional method requires a web having a width obtained by adding the folded portion to the composite sheet, so that an increase in cost is inevitable.

したがって、本発明の主目的は、製造コストの低減を図り得る着用物品の製造方法を提供することである。   Accordingly, a main object of the present invention is to provide a method for manufacturing a worn article that can reduce the manufacturing cost.

本発明のある製造方法は、着用者の胴の一部を覆う第1胴部と、着用者の胴の他部を覆う第2胴部と、着用者の股を覆うコア部とを備えた着用物品の製造方法であって、搬送方向に連続するとともに第1側縁部および第2側縁部を有する帯状の一対のウェブの間に弾性部材を配置して複合シートを生成する工程と、前記複合シートを所定の切断線に沿ってスリットすることにより、前記第1側縁部を含む第1分割シートと前記第2側縁部を含む第2分割シートとに分割する工程と、前記第1分割シートにおける前記切断線に沿った第1切断部と、前記第2分割シートにおける前記切断線に沿った第2切断部との間に、前記第1および第2側縁部が配置されて前記第1側縁部と前記第2側縁部とが互いに対向するように第1および第2分割シートの配置関係を変える工程と、前記配置関係を変えた前記一対の分割シートの間に前記コア部が跨るように前記コア部を配置する工程とを備えたことを特徴とする。   A manufacturing method according to the present invention includes a first torso that covers a part of the wearer's torso, a second torso that covers the other part of the wearer's torso, and a core that covers the wearer's crotch. A method for producing a worn article, comprising a step of generating a composite sheet by disposing an elastic member between a pair of belt-like webs that are continuous in the conveying direction and have a first side edge and a second side edge; Slitting the composite sheet along a predetermined cutting line to divide the composite sheet into a first divided sheet including the first side edge and a second divided sheet including the second side edge; The first and second side edge portions are disposed between a first cutting portion along the cutting line in the one-divided sheet and a second cutting portion along the cutting line in the second divided sheet. The first and second divided sheets are arranged so that the first side edge and the second side edge face each other. A step of changing a positional relationship, characterized by comprising the step of disposing the core portion so that the core portion spans between the pair of separate sheets of varying the positional relationship.

この方法によれば、両分割シートの切断部の間に両側縁部が配置されるように分割シートの配置関係が変更される。かかる変更により、分割シートの切断部を着用物品の胴部の上端部となるように配置することができる。そのため、複合シートの作成時にウエブ同士にズレが生じても、胴部の見栄えが損なわれない。したがって、複合シートの側縁部を折り返す必要がなくなるので、材料コストの大幅な低減を図り得る。
また、複合シートの側端部を折り返す工程が不要になるので、製造コストの低減を図り得る。
According to this method, the arrangement relationship of the divided sheets is changed so that both side edge portions are arranged between the cut portions of both divided sheets. By such a change, the cut part of the split sheet can be arranged so as to be the upper end part of the trunk part of the worn article. Therefore, even if the webs are displaced at the time of creating the composite sheet, the appearance of the body portion is not impaired. Therefore, it is not necessary to turn back the side edge portion of the composite sheet, so that the material cost can be greatly reduced.
Moreover, since the process of turning back the side end portion of the composite sheet is not necessary, the manufacturing cost can be reduced.

なお、“着用物品”とは、使い捨てオムツやパンツなどの使い捨て着用物品の半製品および完成品を含む概念である。
また、“スリット”とは、複合シートを搬送方向に沿って切断して分割することをいう。
The “wearing article” is a concept including semi-finished products and finished products of disposable wearing articles such as disposable diapers and pants.
Further, “slit” means that the composite sheet is cut and divided along the conveyance direction.

前記配置関係を変える各工程は、前記各分割シートの表裏が反転されることにより実行されてもよい。   Each step of changing the arrangement relationship may be executed by reversing the front and back of each divided sheet.

本発明は、添付の図面を参考にした以下の好適な実施例の説明からより明瞭に理解されるであろう。しかしながら、実施例および図面は単なる図示および説明のためのものであり、本発明の範囲を定めるために利用されるべきものではない。本発明の範囲は請求の範囲のみによって定まる。添付図面において、複数の図面における同一の部品番号は、同一または相当部分を示す。   The invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings, in which: However, the examples and figures are for illustration and description only and should not be used to define the scope of the present invention. The scope of the present invention is defined only by the claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.

実施例1:
以下、本発明の実施例が図面にしたがって説明される。
図1および図2は実施例1を示す。
Example 1:
Embodiments of the present invention will be described below with reference to the drawings.
1 and 2 show Example 1. FIG.

オムツ10(着用物品の一例)10:
まず、本発明により製造され得る着用物品の一例が図2を用いて説明される。
図2の右端に示すように、オムツまたはパンツのような着用物品10(以下、オムツ10として説明する)は、コア部Cおよび一対の胴部S1,S2により構成されている。オムツ10は、コア部Cが折られて、胴部S1,S2が互いに重なるように折り畳まれている。
図2の製造工程の下流部分に示すように、前記コア部Cは、一対の分割シートW1,W2からなる前記胴部S1,S2の間に跨がるように配置されて接着される。
Diaper 10 (an example of a worn article) 10:
First, an example of a wearing article that can be manufactured according to the present invention will be described with reference to FIG.
As shown at the right end of FIG. 2, a wearing article 10 such as a diaper or a pant (hereinafter described as a diaper 10) includes a core part C and a pair of trunk parts S <b> 1 and S <b> 2. The diaper 10 is folded so that the core portion C is folded and the trunk portions S1 and S2 overlap each other.
As shown in the downstream part of the manufacturing process of FIG. 2, the core C is disposed and bonded so as to straddle between the body S1, S2 formed of a pair of divided sheets W1, W2.

前記胴部S1,S2は、着用者の胴の一部を覆う第1胴部S1と、着用者の胴の他部を覆う第2胴部S2からなる。胴部S1,S2には、胴回り方向Lに沿って、たとえば、複数本の糸ゴムや平ゴムなどからなる弾性部材F(図1A)が配置されている。
前記胴部S1,S2には、レッグホールLhが形成されている。なお、レッグホールLhに沿って弾性部材が配置されてもよいが、説明の簡略化のため、その説明および図示を省略する。
The torso S1, S2 includes a first torso S1 that covers a part of the wearer's torso and a second torso S2 that covers the other part of the wearer's torso. An elastic member F (FIG. 1A) made of, for example, a plurality of thread rubbers or flat rubbers is disposed along the waistline direction L in the body parts S <b> 1 and S <b> 2.
Leg holes Lh are formed in the body portions S1 and S2. An elastic member may be disposed along the leg hole Lh, but the description and illustration thereof are omitted for the sake of simplicity.

前記コア部Cには、体内から排出される体液を吸収することが可能な吸収体が設けられている。前記吸収体は液を吸収し保持することができるものであればよい。吸収体は、パルプを紛砕したフラッフパルプおよび/または高吸収性ポリマーを有していてもよい。   The core portion C is provided with an absorber capable of absorbing bodily fluids discharged from the body. The absorbent body only needs to be able to absorb and retain liquid. The absorbent body may have fluff pulp and / or superabsorbent polymer comminuted from the pulp.

前記コア部Cは、着用物品のトップシートまたはバックシート等を構成するシート状物を有していてもよい。トップシートは、着用者の体液、たとえば、尿や血液を透過することができる。トップシートは液が逆流することを妨げる機能を有していてもよい。バックシートとしては、例えは、液を透過しないポリエチレンシートが使用され得る。   The core part C may have a sheet-like material that constitutes a top sheet or a back sheet of a worn article. The topsheet can permeate the body fluid of the wearer, such as urine and blood. The top sheet may have a function of preventing the liquid from flowing backward. As the back sheet, for example, a polyethylene sheet that does not transmit liquid can be used.

製造方法:
図1Aに示すように、複合シートWは、第1搬送方向L1に沿って複数本の弾性部材Fが一対のウエブWu,Wdに挟まれた状態で、当該弾性部材Fが両ウエブWu,Wdに接着されて形成される。複合シートWは、第1搬送方向L1に連続していると共に、該第1搬送方向L1に概ね直交する幅方向Xの両端に第1側縁部W1sおよび第2側縁部W2sを有する帯状に形成される。
Production method:
As shown in FIG. 1A, the composite sheet W has a plurality of elastic members F sandwiched between a pair of webs Wu and Wd along the first conveying direction L1. It is formed by adhering to. The composite sheet W is continuous in the first transport direction L1 and has a strip shape having a first side edge W1s and a second side edge W2s at both ends in the width direction X substantially perpendicular to the first transport direction L1. It is formed.

図1Bに示すように、前記複合シートWは、両ウエブWu,Wdを重ね合わせる際の誤差などにより、その両側縁部W1s,W2sにおいて前記両ウエブWu,Wdが互いに若干ズレて生成されるのは避け難い。   As shown in FIG. 1B, the composite sheet W is generated with a slight misalignment between the webs Wu and Wd at both side edges W1s and W2s due to errors in overlaying the webs Wu and Wd. Is hard to avoid.

図2に示す前記複合シートWは、長手方向L1,L2に引っ張られながら伸張された状態で、前記長手方向(第1および第2搬送方向)L1,L2に搬送される。
前記複合シートWは、前記伸張された状態のまま、所定の第1切断線CL1に沿ってスリットされる。図1Cに示すように、かかるスリットにより、複合シートWが第1分割シートW1と第2分割シートW2とに分割される。
The composite sheet W shown in FIG. 2 is transported in the longitudinal directions (first and second transport directions) L1 and L2 while being stretched while being pulled in the longitudinal directions L1 and L2.
The composite sheet W is slit along the predetermined first cutting line CL1 in the stretched state. As shown in FIG. 1C, the composite sheet W is divided into a first divided sheet W1 and a second divided sheet W2 by the slit.

第1分割シートW1における第1側縁部W1sの他方の端には、第1切断線CL1に沿った第1切断部W1cが形成される。一方、第2分割シートW2における第2側縁部W2sの他方の端には、第1切断線CL1に沿った第2切断部W2cが形成される。前記両切断部W1c,W2cは、第1側縁部W1sと第2側縁部W2sとの間に位置する。   A first cut portion W1c along the first cut line CL1 is formed at the other end of the first side edge portion W1s in the first divided sheet W1. On the other hand, a second cut portion W2c along the first cut line CL1 is formed at the other end of the second side edge portion W2s in the second divided sheet W2. Both the cutting parts W1c and W2c are located between the first side edge part W1s and the second side edge part W2s.

その後、図2に示すように、第1および第2折返ローラR1,R2によって、第1および第2分割シートW1,W2が、それぞれ折り返される。折返ローラR1,R2は、たとえば互いに概ね平行な角度に設置されている。
なお、識別し易いように、複合シートWおよび両分割シートW1,W2の一方の面には、網点を施してある。
Then, as shown in FIG. 2, the first and second divided sheets W1, W2 are folded back by the first and second folding rollers R1, R2, respectively. The folding rollers R1 and R2 are installed, for example, at substantially parallel angles.
For easy identification, one side of the composite sheet W and the two divided sheets W1, W2 is provided with a halftone dot.

前記第1分割シートW1は、第1折返ローラR1によって表裏が反転されると共に、所定の角度に折り返されて第2搬送方向L2に向って搬送される。一方、第2分割シートW2は、第2折返ローラR2によって表裏が反転されると共に、前記第1分割シートW1が折り返された角度と概ね同じ角度に折り返されて前記第2搬送方向L2に向って搬送される。第1分割シートW1の折返位置(ローラR1の位置)は、第2分割シートW2の折返位置(ローラR2の位置)よりも下流に設けられている。   The first divided sheet W1 is turned upside down by the first folding roller R1, folded back at a predetermined angle, and conveyed in the second conveying direction L2. On the other hand, the second divided sheet W2 is turned upside down by the second folding roller R2, and is folded back at substantially the same angle as the angle at which the first divided sheet W1 is folded, toward the second conveying direction L2. Be transported. The folding position (the position of the roller R1) of the first divided sheet W1 is provided downstream of the folding position (the position of the roller R2) of the second divided sheet W2.

前記折り返しにより、図1Dに示す両分割シートW1,W2の表裏がそれぞれ反転されると共に、第1切断部W1cと第2切断部W2cとの間に第1および第2側縁部W1s,W2sが配置される。かかる折り返しにより、第1側縁部W1sと第2側縁部W2sとが互いに対向するように第1および第2分割シートW1,W2の配置関係が変更される。
一方、図2の2本の折返ローラR1,R2を、第1搬送方向L1の上流と下流とに所定の間隔をおいてそれぞれ設置することにより、両分割シートW1,W2が前記折り返しによって、折り返し後の第2搬送方向L2に略直交する幅方向Xに拡幅される。
By the folding, the front and back of both divided sheets W1 and W2 shown in FIG. 1D are reversed, and the first and second side edge portions W1s and W2s are provided between the first cut portion W1c and the second cut portion W2c. Be placed. By such folding, the arrangement relationship between the first and second divided sheets W1, W2 is changed so that the first side edge W1s and the second side edge W2s face each other.
On the other hand, by installing the two folding rollers R1 and R2 in FIG. 2 at a predetermined interval upstream and downstream in the first conveying direction L1, both the divided sheets W1 and W2 are folded back by the folding. The width is increased in the width direction X substantially orthogonal to the subsequent second transport direction L2.

前記折り返し後、図2に示すように、互いに平行な両分割シートW1,W2に跨がるように、コア部Cが所定の間隔で配置された後、分割シートW1,W2の一部がカットされてレッグホールLhが形成される。   After the folding, as shown in FIG. 2, after the core portion C is arranged at a predetermined interval so as to straddle both the parallel divided sheets W1, W2, a part of the divided sheets W1, W2 is cut. As a result, a leg hole Lh is formed.

第1分割シートW1と第2分割シートW2とが重なるようにコア部Cが折られた後、第2搬送方向L2に略直交する切断線CL2に沿って両分割シートW1,W2が切断されて、個々のオムツ10に切り分けられる。前記切り分けにより、第1および第2分割シートW1,W2は、それぞれ第1および第2胴部S1,S2となる。   After the core part C is folded so that the first divided sheet W1 and the second divided sheet W2 overlap, both the divided sheets W1, W2 are cut along a cutting line CL2 substantially orthogonal to the second transport direction L2. The individual diapers 10 are separated. By the cutting, the first and second divided sheets W1 and W2 become the first and second body portions S1 and S2, respectively.

このように、両分割シートW1,W2の配置関係が変更されることにより、切断部W1c,W2cが幅方向Xの両端に配置される。そのため、オムツ10の胴部S1,S2の上端部が、ウエブWu,Wd(図1D)の端が揃った切断部W1c,W2cとなるので、シートに腰ができ、かつ、胴部S1,S2の見栄えが損なわれない。   Thus, the cutting parts W1c and W2c are arranged at both ends in the width direction X by changing the arrangement relationship between the two divided sheets W1 and W2. Therefore, the upper end portions of the trunk portions S1 and S2 of the diaper 10 become cut portions W1c and W2c in which the ends of the webs Wu and Wd (FIG. 1D) are aligned, so that the seat can be waisted and the trunk portions S1 and S2 The appearance of is not impaired.

なお、図3に示すように、搬送方向Lの方向を変更せずに、両分割シートW1,W2の表裏をそれぞれ反転するようにしてもよい。この場合、ローラR1,R2は、搬送方向Lの同じ位置に配置されてもよい。
また、両分割シートW1,W2の配置関係の変更と拡幅とは同時に行われる必要はなく、それぞれ別の工程に分けて行われてもよい。更に、表裏を反転した後に、両分割シートW1,W2の間の間隔を狭くしてもよい。
In addition, as shown in FIG. 3, you may make it invert the front and back of both the division | segmentation sheets W1 and W2, without changing the direction of the conveyance direction L, respectively. In this case, the rollers R1 and R2 may be arranged at the same position in the transport direction L.
In addition, the change in the arrangement relationship between the divided sheets W1 and W2 and the widening need not be performed simultaneously, and may be performed separately in separate steps. Further, after reversing the front and back, the interval between the two divided sheets W1, W2 may be narrowed.

実施例2:
図4は実施例2を示す。
図4に示すように、本実施例では、両分割シートW1,W2の表裏を反転することなく、両分割シートW1,W2を互いに上下に交差させることにより、分割シートW1,W2の配置関係の変更を行っている。前記交差により、分割シートW1,W2の両切断部W1c,W2cの間に、両側縁部W1s,W2sが互いに対向するように配置される。
両分割シートW1,W2の交差に伴い、両分割シートW1,W2の幅方向Xの間隔が所定の間隔に拡幅される。
その他の構成は、実施例1と同様であり、同一部分または相当部分に同一符号を付して、その説明を省略する。
Example 2:
FIG. 4 shows a second embodiment.
As shown in FIG. 4, in this embodiment, the divided sheets W <b> 1, W <b> 2 cross each other up and down without reversing the front and back of the divided sheets W <b> 1, W <b> 2. Changes have been made. Due to the intersection, the side edges W1s and W2s are arranged to face each other between the cut portions W1c and W2c of the divided sheets W1 and W2.
Along with the intersection of both divided sheets W1, W2, the interval in the width direction X of both divided sheets W1, W2 is widened to a predetermined interval.
Other configurations are the same as those of the first embodiment, and the same reference numerals are given to the same portions or corresponding portions, and the description thereof is omitted.

本発明は、コア部を有する着用物品の製造に適用することができる。   The present invention can be applied to manufacture of a wearing article having a core portion.

図1Aは本発明の実施例1にかかる複合シートの製造方法の一例を示す概略斜視図、図1B〜図1Dは同複合シートの配置の変化を示す概略端面図である。FIG. 1A is a schematic perspective view showing an example of a method for producing a composite sheet according to Example 1 of the present invention, and FIGS. 1B to 1D are schematic end views showing changes in the arrangement of the composite sheet. 同着用物品の製造方法を示す斜視図である。It is a perspective view which shows the manufacturing method of the wearing article. 変形例を示す概略斜視図である。It is a schematic perspective view which shows a modification. 本発明の実施例2にかかる着用物品の製造方法の一例を示す概略平面図である。It is a schematic plan view which shows an example of the manufacturing method of the wearing article concerning Example 2 of this invention.

符号の説明Explanation of symbols

C:コア部
F:弾性部材
S1:第1胴部
S2:第2胴部
W:複合シート
W1:第1分割シート
W2:第2分割シート
W1c:第1切断部
W2c:第2切断部
W1s:第1側縁部
W2s:第2側縁部
Wu,Wd:ウエブ
C: Core part F: Elastic member S1: 1st trunk | drum S2: 2nd trunk | drum W: Composite sheet W1: 1st division | segmentation sheet W2: 2nd division | segmentation sheet W1c: 1st cutting part W2c: 2nd cutting part W1s: First side edge W2s: Second side edge Wu, Wd: Web

Claims (2)

着用者の胴の一部を覆う第1胴部と、着用者の胴の他部を覆う第2胴部と、着用者の股を覆うコア部とを備えた着用物品の製造方法であって、
搬送方向に連続するとともに第1側縁部および第2側縁部を有する帯状の一対のウェブの間に弾性部材を配置して複合シートを生成する工程と、
前記複合シートを所定の切断線に沿ってスリットすることにより、前記第1側縁部を含み前記第1胴部となる第1分割シートと前記第2側縁部を含み前記第2胴部となる第2分割シートとに分割する工程と、
前記第1分割シートにおける前記切断線に沿った第1切断部と、前記第2分割シートにおける前記切断線に沿った第2切断部との間に、前記第1および第2側縁部が配置されて前記第1側縁部と前記第2側縁部とが互いに対向するように第1および第2分割シートの配置関係を変える工程と、
前記配置関係を変えた前記一対の分割シートの間に前記コア部が跨るように前記コア部を配置する工程とを備えた着用物品の製造方法。
A method for manufacturing a worn article, comprising: a first torso that covers a part of the wearer's torso; a second torso that covers the other part of the wearer's torso; and a core that covers the crotch of the wearer. ,
A step of generating a composite sheet by disposing an elastic member between a pair of belt-like webs that are continuous in the conveying direction and have a first side edge and a second side edge;
Wherein by a slit along the composite sheet to a predetermined cutting line, the first side edge portion of unrealized said first body portion to become the first divided sheet and the second side edge unrealized said second cylinder and Dividing into a second divided sheet to be a part ;
The first and second side edge portions are disposed between a first cutting portion along the cutting line in the first divided sheet and a second cutting portion along the cutting line in the second divided sheet. And changing the arrangement relationship of the first and second divided sheets so that the first side edge and the second side edge face each other;
And a step of arranging the core portion so that the core portion straddles between the pair of divided sheets whose arrangement relation is changed.
請求項1において、前記配置関係を変える各工程は、前記各分割シートの表裏が反転されることにより実行される着用物品の製造方法。   2. The method for manufacturing a worn article according to claim 1, wherein each step of changing the arrangement relationship is performed by reversing the front and back of each of the divided sheets.
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