JP3568146B2 - Method and apparatus for producing an absorbent article - Google Patents

Method and apparatus for producing an absorbent article Download PDF

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Publication number
JP3568146B2
JP3568146B2 JP20289098A JP20289098A JP3568146B2 JP 3568146 B2 JP3568146 B2 JP 3568146B2 JP 20289098 A JP20289098 A JP 20289098A JP 20289098 A JP20289098 A JP 20289098A JP 3568146 B2 JP3568146 B2 JP 3568146B2
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groove
liquid
absorbent article
portion
surface material
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JP2000014701A (en
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伸之 上塩入
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花王株式会社
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【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
本発明は、液透過性の表面材及び液不透過性の裏面材と、その間に介装される液保持性の吸液体からなる生理用ナプキン、失禁パッド、おむつ等の吸収性物品の製造方法及び製造装置に関する。 The present invention is a liquid and permeable surface material and a liquid impermeable backsheet, sanitary napkin comprising a liquid absorber liquid retention interposed therebetween, manufacturing method for absorbent articles of the incontinence pad, diaper or the like and a manufacturing apparatus.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
従来の吸収性物品として、実開平2−88625 号公報、特開平9−108262号公報に記載の如く、表面材と吸液体の積層部の中央吸収領域に溝を成形し、経血の漏れを防止可能としたものが提案されている。 A conventional absorbent article, the actual Hei 2-88625 discloses, as described in JP-A-9-108262, by forming a groove in the central absorbent region of the laminated portion of the surface material and the liquid absorber, the leakage of menstrual blood that was possible to prevent has been proposed. 上記溝は、一般に、加圧ロールに成形突部を設けて圧搾し成形されている。 The grooves are generally squeezed molded by the molding protrusion provided on the pressure roll.
【0003】 [0003]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
然しながら、従来技術には以下の問題があった。 However, the prior art has the following problem.
▲1▼溝の大きさや形状又は材料の選択によって、溝部の圧着が不十分となり、溝が浅くなったり、表面材が吸液体から剥離する浮きを生じ、漏れ防止性能や装着性が低下することがあった。 ▲ 1 ▼ by the selection of the groove size and shape or material, crimping of the groove becomes insufficient, grooves or shallow, cause lifting of the surface material is peeled off from the liquid absorber, the leakage prevention performance and wearability decreases was there.
【0004】 [0004]
▲2▼上記▲1▼の溝の深さ、表面材の浮きの問題を改善するため、加圧ロールの圧力や温度を高くしたり、または加圧ロールの成形突部の高さを高くすると、表面材に大きな剪断力がかかったり、表面材の溶融により、表面材の切れが発生し、上記▲1▼と同様に漏れ防止性能や装着性が低下することがあった。 ▲ 2 ▼ the ▲ 1 ▼ groove depth, in order to improve the lifting problem of the surface material, or by increasing the pressure and temperature of the pressure roll, or by increasing the height of the molded projection of the pressure roll , it may take a large shearing force to the surface material, by melting of the surface material, cutting of the surface material occurs, the ▲ 1 ▼ and leakproof performance and wearability as well that may deteriorate.
【0005】 [0005]
本発明の課題は、吸収性物品において、表面材と吸液体の積層部に溝を形成するに際し、表面材の切れや浮きを生ずることなく安定した経血の漏れ防止性能や装着性を良好にすることにある。 An object of the present invention, in the absorbent article, in forming a groove in the laminated portion of the surface material and the liquid absorber, a stable leak-proof performance and wearability of menstrual blood without causing cutting and lifting of the surface material satisfactorily It is to.
【0006】 [0006]
【課題を解決するための手段】 In order to solve the problems]
請求項1に記載の本発明は、液透過性の表面材と、液不透過性の裏面材と、該表面材及び該裏面材の間に介装される液保持性の吸液体からなる吸収性物品の製造方法において、前記吸収性物品は、表面材及び吸液体に側壁部と底部からなる溝を有しており、前記溝は、表面材及び吸液体を加圧ロールの成形突部で圧搾することにより成形されるものであって、 前記成形突部は突部の中で周辺より高さが高く、溝の底部を形成する高圧搾部と、前記高圧搾部より低い段差をなす低圧搾部とからなり、前記高圧搾部で溝の底部を形成し、且つ前記低圧搾部で溝の側壁部を成形するようにしたものである。 The present invention is defined in claim 1, consisting of liquid-permeable and the surface material, a liquid impermeable backsheet and a liquid retention of liquid absorber being interposed between said surface member and back surface member absorbing the method of manufacturing a sexual article, said absorbent article, the surface material and liquid absorber has a groove comprising a sidewall portion and a bottom portion, said groove, a surface material and a liquid absorber in the molding protrusion of the pressure roll be those that are formed by squeezing, it said shaped projection is taller than the surrounding in the projections, and the high compression portion forming the bottom of the groove, low form a step lower than the high compression portions consists of a compression unit, it forms the bottom of the groove in the high compression portion is and those described above so as to form the side walls of the groove at the low compression portion.
【0007】 [0007]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
以上、図面を参照して本発明の一実施形態として、生理用ナプキンの製造方法について説明する。 Above, as an embodiment of the present invention with reference to the drawings, a method for manufacturing the sanitary napkin.
生理用ナプキン10は、図2〜図4に示す如く、液透過性の表面材11と液不透過性の裏面材13と、それらの表面材11と裏面材13の間に介装される液保持性の吸液体12からなり、表面材11と吸液体12の積層部における中央吸収領域の周囲に略長円状の溝14を備え、この溝14により経血の横漏れを防止可能としている。 Sanitary napkin 10, as shown in FIGS. 2 to 4, the liquid-permeable surface material 11 and the liquid impermeable back sheet 13, a liquid interposed between their surface member 11 and back member 13 It consists retention of liquid absorber 12, comprises a generally oval-shaped groove 14 around the central absorbent region in the laminated portion of the surface member 11 and the liquid absorber 12, thereby enabling preventing the lateral leakage of menstrual blood by the groove 14 . 溝14は、側壁部14aと底部14bからなる。 Groove 14 is comprised of side walls 14a and a bottom 14b. 尚、裏面材13の中央部及び左右のウィング15の非肌当接面側には下着に装着するためのずれ止め剤16が設けられている。 Incidentally, displacement preventing agent 16 for the non-skin contact surface side of the central portion and the left and right wings 15 of the back sheet 13 to be attached to an undergarment. 図3(C)において17はホットメルトである。 17 is a hot melt in FIG 3 (C).
【0008】 [0008]
生理用ナプキン10の生産工程は以下の如くなされる。 Production of the sanitary napkin 10 is made as follows.
(1) 表面材11と吸液体12を図1の溝成形装置20に積層状態で供給する(図3(A))。 (1) the surface material 11 and the liquid absorber 12 is supplied in a stacked state to the groove forming apparatus 20 of FIG. 1 (Figure 3 (A)).
【0009】 [0009]
(2) 溝成形装置20の上下一対の加圧ロール21、22で表面材11と吸液体12を挟圧して圧着する。 (2) the surface material 11 and the liquid absorber 12 by the pair of upper and lower pressure rolls 21, 22 of the groove forming apparatus 20 for crimping and nipped. このとき、加圧ロール21の成形突部30で表面材11と吸液体12を圧搾し、表面材11と吸液体12に溝14を成形する(図3(B))。 At this time, squeeze the surface material 11 and the liquid absorber 12 by molding protrusions 30 of the pressure roll 21, forming the grooves 14 in the surface material 11 and the liquid absorber 12 (FIG. 3 (B)).
【0010】 [0010]
(3) 表面材11の両側部で吸液体12の両側部をくるみ、吸液体12の背面側に位置する表面材11の両端部に裏面材13を接合する(図3(C))。 (3) walnut both side portions of the liquid absorber 12 on both sides of the surface member 11, joining the rear material 13 at both ends of the surface material 11 located on the rear side of the liquid absorber 12 (FIG. 3 (C)).
【0011】 [0011]
然るに、溝成形装置20を構成する加圧ロール21の成形突部30は、図5(A)に示す如く、溝14の後部A(女性局部の後方相当部)、前部B(女性局部の前方相当部)、中間部Cのそれぞれに対応する部分の形態を成形突部31、32、33としている。 However, the molding projection 30 of the pressure roll 21 constituting the groove forming apparatus 20, as shown in FIG. 5 (A), the rear portion A of the groove 14 (Female local rearward portion corresponding), the front B (Female local front portion corresponding) has the form of a portion corresponding to the respective intermediate portions C and molded projections 31, 32 and 33. 図5(B)の成形突部31は図5(A)のA−A線に沿う矢視図である。 Forming protrusions in FIG. 5 (B) 31 is an arrow view taken along line A-A of FIG. 5 (A).
【0012】 [0012]
成形突部31は図5(B)に示す如く、溝14の後部Aの幅方向に低圧搾部31A、高圧搾部31B、低圧搾部31Cを備える。 Shaping projections 31 as shown in FIG. 5 (B), low compression portion 31A in the width direction of the rear A groove 14, the high compression portion 31B, comprises a low compression portion 31C. 即ち、成形突部31は、加圧ロール21の回転方向の進み側(表面材11に対する入側)で溝14の側壁部14aを成形する部分を低圧搾部31Aとし、溝14の底部14bを成形する部分を高圧搾部31Bとし、加圧ロール21の回転方向の反進み側(表面材11に対する出側)で溝14の側壁部14aを成形する部分を低圧搾部31Cとし、低圧搾部31A、31Cが高圧搾部31Bに対して低い段差をなすものとしている。 That is, the molding projection 31, a portion for forming the side walls 14a of the groove 14 in the rotating direction of the advance side of the pressure roll 21 (inlet side with respect to the surface member 11) is set to a low compression portions 31A, the bottom 14b of the groove 14 a portion forming a high compression portion 31B, a portion for forming the side walls 14a of the groove 14 in the counter-leading side in the rotational direction of the pressure roll 21 (the outlet side with respect to the surface member 11) is set to a low compression portions 31C, low compression unit 31A, 31C are assumed to form a low step with respect to the high compression portion 31B. 低圧搾部31A、31Cの長さXは 0.5〜10mm、好ましくは 0.5〜5mm である。 Low compression unit 31A, 31C of the length X is 0.5 to 10 mm, preferably 0.5 to 5 mm. 低圧搾部31A、31Cの角部はRもしくはC面取が施される。 Low compression unit 31A, the corners of 31C is R or C chamfer is performed. 低圧搾部31Cは必須でなく、高圧搾部31Bの出側成形面は図5(B)の鎖線の如くのテーパ面としても良い。 Low compression portion 31C is not essential, exit-side molding surface of the high compression portion 31B may be a tapered surface of the as the chain line in FIG. 5 (B).
【0013】 [0013]
尚、成形突部31は、溝14の底部14bの長手連続方向で高圧搾部31Bを断続配置し、その長手連続方向では高圧搾部31Bと低圧搾部31Dとを交互に配置し、結果として溝14の底部14bの長手連続方向には高圧搾底部と低圧搾底部とを交互に配置するものとしている。 The molding projection 31 is intermittently arranged high compression portion 31B in the longitudinal continuous direction of the bottom portion 14b of the groove 14, arranged with its high compression portions 31B and low compression portion 31D in the longitudinal continuous direction alternately, as a result the longitudinal continuous direction of the bottom portion 14b of the grooves 14 are assumed to be arranged in alternating high compression bottom and low compression bottom.
【0014】 [0014]
成形突部32も、成形突部31と同様に、溝14の前部Bの幅方向に低圧搾部32A、高圧搾部32B、低圧搾部32Cを備える。 Shaping projections 32 also comprises Similar to the shaped projection 31, low compression portion 32A in the width direction of the front B of the groove 14, the high compression portion 32B, the low compression portion 32C.
【0015】 [0015]
成形突部33も、成形突部31と同様に、溝14の中間部Cの幅方向に低圧搾部33A、高圧搾部33B、低圧搾部33Cを備える。 Shaping projections 33 also comprises Similar to the shaped projection 31, low compression portion 33A in the width direction of the intermediate portion C of the groove 14, the high compression portion 33B, the low compression portion 33C.
【0016】 [0016]
成形突部30において、成形突部31の低圧搾部31A、31C、成形突部32の低圧搾部32A、32C、成形突部33の低圧搾部33A、33Cは互いに同一高さをなし、成形突部31の高圧搾部31B、成形突部32の高圧搾部32B、成形突部33の高圧搾部33Aは互いに同一高さをなす。 In the molding protrusions 30, no low compression portion 31A of the molding projection 31, 31C, low compression portion 32A of the molding projection 32, 32C, low compression portion 33A of the molding projection 33, 33C are the same height with each other, forming the high compression portion 31B of the projection 31, the high compression portion 32B of the forming protrusion 32, the high compression portion 33A of the molding projection 33 together form a same height.
【0017】 [0017]
従って、本実施形態によれば、以下の作用がある。 Therefore, according to the present embodiment, the following effects can be obtained.
▲1▼加圧ロール21の成形突部30におけるロール回転方向の進み側及び/又は反進み側で、溝14の側壁部14aを成形する部分を、低圧搾部31A、32A、33A、31C、32C、33Cとしたので、表面材11と吸液体12の該成形突部30の低圧搾部31A、32A、33A、31C、32C、33Cによる圧搾開始局所での圧搾深さが緩やかなものになる。 ▲ 1 ▼ roll rotation direction leading side and / or the counter-leading side in the molding protrusions 30 of the pressure roll 21, a portion for molding the side walls 14a of the groove 14, the low-compression portions 31A, 32A, 33A, 31C, 32C, since the 33C, low compression portion 31A of the molding projection 30 of the surface member 11 and the liquid absorber 12, 32A, 33A, 31C, 32C, the pressing depth at squeezing start topical by 33C becomes gentle . 従って、この部分の表面材11に作用する剪断力は小さく、表面材11の切れ発生を防止できる。 Therefore, the shear force acting on the surface member 11 of this portion is small, can be prevented cutting occurrence of surface material 11.
【0018】 [0018]
▲2▼加圧ロール21の成形突部30における溝14の底部14bを成形する部分は、上述の低圧搾部31A、32A、33A、31C、32C、33Cに対し段差をなす高圧搾部31B、32B、33Bとなる。 ▲ 2 ▼ portions for molding the bottom portion 14b of the grooves 14 in the molding protrusions 30 of the pressure roll 21, a low compression portions 31A of the above, 32A, 33A, 31C, 32C, the high compression portion 31B forming a step to 33C, 32B, the 33B. この高圧搾部31B、32B、33Bは、経血の横漏れ防止に必要十分な深さの溝14を形成可能とする。 The high compression portion 31B, 32B, 33B shall be capable of forming a groove 14 of the required depth sufficient side leakage preventing menstrual blood. 同時に、この高圧搾部31B、32B、33Bは、表面材11と吸液体12に必要十分な圧着量を付与し、この部分の表面材11の構成材料を吸液体12の構成材料に確実に圧着(繊維の絡み付き等)させることができ、表面材11が吸液体12から剥離する浮きの発生を防止できる。 At the same time, the high compression portion 31B, 32B, 33B imparts the necessary and sufficient bonding amount of surface material 11 and the liquid absorber 12, securely crimp the constituent material of the surface material 11 of this part the material of the liquid absorber 12 can be (entangled like fibers), surface material 11 can be prevented from occurring floating peeling off from the liquid absorber 12.
【0019】 [0019]
▲3▼溝14の幅方向の両側部が低圧搾側壁部となって経血の吸収性が良いから、経血の横漏れ防止能を向上できる。 ▲ 3 ▼ from both sides in the width direction of the groove 14 is a good absorption of the menstrual blood becomes low compression side wall, it can be improved side leakage prevention capability of the menstrual blood.
【0020】 [0020]
▲4▼溝14の幅方向の両側部が低圧搾側壁部であって、溝14のエッジが緩やかであり、女性局部に刺激を与えず、装着性が良い。 ▲ 4 ▼ both sides of the width direction of the groove 14 is a low compression side wall, a gentle edge of the groove 14, without giving women local to the stimulus, good wearability.
【0021】 [0021]
尚、本発明の実施において、吸収性物品の表面材としては、不織布、開孔樹脂フィルム等、吸液体としてはパルプ、吸水ポリマー等、裏面材としては樹脂フィルムや不織布と樹脂フィルムの複合シート等を通常使用されるものが制限なく採用できる。 Incidentally, in the practice of the present invention, the surface material of the absorbent article, nonwoven fabric, apertured resin film, pulp as liquid absorber, water-absorbing polymeric, etc., composite sheet of the resin film or nonwoven fabric and a resin film as a backsheet the can usually adopt what is used without any restriction.
【0022】 [0022]
また、本発明の実施において、加圧ロールの成形突部における溝の底部を成形する高圧搾部よりロール回転方向の進み側及び/又は反進み側に設けられる低圧搾部は、 1段の段差でなく、複数段の段差をなすものであっても良い。 Further, in the practice of the present invention, low compression portion provided in the roll rotation direction leading side and / or the counter-leading side than the high compression portion for molding the bottom of the groove in the molding protrusion of the pressure roll is one step level difference not may be one which forms a step of a plurality of stages.
【0023】 [0023]
また、本発明の実施において、低圧搾部は、回転方向の進み側に存在していることが好ましく、全周に存在していることが一層好ましい。 Further, in the practice of the present invention, low compression unit is preferably present in the advanced side in the rotational direction, it is more preferably present in the entire circumference. ロールの成形突部と吸収性物品の接触面積が大きくなる溝長手連続方向と加圧ロールの回転軸とが平行もしくは平行に近くなる場合には特に、安定した溝形状を得るために、低圧搾部が回転方向の進み側に存在していることが好ましい。 Especially when a molded protrusion of the roll and the rotation axis of the absorbent groove longitudinal continuous direction and the pressure roller contact area is large article becomes close to parallel or parallel, in order to obtain a stable groove shape, low compression it is preferred that parts are present in the leading side of the rotation direction.
【0024】 [0024]
また、本発明の実施において、加圧ロールの温度は、シールかすやバリ等による溝成形外観への影響、また、高速生産性の点で50〜250 ℃が好ましく、60〜200 ℃が一層好ましい。 Further, in the practice of the present invention, the temperature of the pressure roll, the effect of the groove forming the appearance by the sealing cake and burrs, also 50 to 250 ° C. are preferred in view of high speed productivity, more preferably 60 to 200 ° C. .
【0025】 [0025]
【発明の効果】 【Effect of the invention】
以上のように本発明によれば、吸収性物品において、表面材と吸液体の積層部に溝を形成するに際し、表面材の切れや浮きを生ずることなく安定した経血の漏れ防止性能や装着性を良好にすることができる。 According to the present invention as described above, in the absorbent article, in forming a groove in the laminated portion of the surface material and the liquid absorber, the leakage prevention performance stable menstrual blood without causing any cutting and lifting of the surface material and mounted it is possible to improve the resistance.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】図1は溝成形装置の一例を示す模式図である。 FIG. 1 is a schematic diagram showing an example of a groove forming apparatus.
【図2】図2は生理用ナプキンの一例を示す模式図である。 Figure 2 is a schematic view showing an example of a sanitary napkin.
【図3】図3は生理用ナプキンの生産工程を生理用ナプキンの横断面において示す模式図である。 Figure 3 is a schematic diagram showing in cross-section of the sanitary napkin to the production process of the sanitary napkin.
【図4】図4は図2のIV−IV 線に沿う断面図である。 Figure 4 is a sectional view taken along line IV-IV of FIG.
【図5】図5は加圧ロールの成形突部を示す模式図である。 Figure 5 is a schematic view showing the molding protrusion of the pressure roll.
【符号の説明】 DESCRIPTION OF SYMBOLS
10 生理用ナプキン11 表面材12 吸液体13 裏面材14 溝20 溝成形装置21、22 加圧ロール30、31、32 成形突部31A、31C、32A、32C 低圧搾部31B、32B 高圧搾部 10 the sanitary napkin 11 surface material 12 liquid absorber 13 back surface member 14 groove 20 groove forming devices 21 and 22 the pressure roll 30, 31 and 32 forming projections 31A, 31C, 32A, 32C low compression portion 31B, 32B high compression portions

Claims (5)

  1. 液透過性の表面材と、液不透過性の裏面材と、該表面材及び該裏面材の間に介装される液保持性の吸液体からなる吸収性物品の製造方法において、 A liquid-permeable surface material, a liquid impermeable back material, manufacturing method of an absorbent article comprising a liquid retentive of liquid absorber being interposed between said surface member and back surface member,
    前記吸収性物品は、表面材及び吸液体に側壁部と底部からなる溝を有しており、 It said absorbent article has a groove comprising a side wall and a bottom surface material and liquid absorber,
    前記溝は、表面材及び吸液体を加圧ロールの成形突部で圧搾することにより成形されるものであって、 The groove, there is molded by squeezing the surface material and liquid-absorbing body shaping projections of the pressure roll,
    前記成形突部は突部の中で周辺より高さが高く、溝の底部を形成する高圧搾部と、前記高圧搾部より低い段差をなす低圧搾部とからなり、 Said shaped projection is made taller than the surrounding is in projection, the high compression portion forming the bottom of the groove, the low compression portion which forms a step difference lower than the high compression portion,
    前記高圧搾部で溝の底部を形成し、且つ前記低圧搾部で溝の側壁部を成形することを特徴とする吸収性物品の製造方法。 Method of manufacturing an absorbent article forms the bottom of the groove in the high compression portion, and characterized in that said molding the sidewalls of the groove at the low compression portion.
  2. 前記加圧ロールの成形突部が、ロール回転方向に対して、低圧搾部と高圧搾部の順に設けられることを特徴とする請求項1記載の吸収性物品の製造方法。 Said forming projection of the pressure roll relative to the roll rotation direction, a manufacturing method of an absorbent article according to claim 1, wherein the provided order low compression portion and the high compression portion.
  3. 液透過性の表面材と、液不透過性の裏面材と、該表面材及び該裏面材の間に介装される液保持性の吸液体からなる吸収性物品の製造装置において、 A liquid-permeable surface material, a liquid impermeable back material, the apparatus for manufacturing an absorbent article comprising a liquid retentive of liquid absorber being interposed between said surface member and back surface member,
    前記吸収性物品は、表面材及び吸液体に側壁部と底部からなる溝を有しており、 It said absorbent article has a groove comprising a side wall and a bottom surface material and liquid absorber,
    前記溝は、表面材及び吸液体を加圧ロールの成形突部で圧搾することにより成形されるものであって、 The groove, there is molded by squeezing the surface material and liquid-absorbing body shaping projections of the pressure roll,
    前記加圧ロールの成形突部は、ロール回転方向の進み側に溝の側壁部を成形する部分を、 前記突部の中で周辺より高さが高い溝の底部を成形する高圧搾部に対し低い段差をなす低圧搾部として有することを特徴とする吸収性物品の製造装置。 Shaping projections of the pressure roll, a portion for forming the side wall of the groove on the leading side of the roll rotation direction with respect to the high compression portion height than around to shape the bottom of the high groove in said projection apparatus for manufacturing an absorbent article characterized by having a low compression portion which forms a low step.
  4. 前記加圧ロールの成形突部が、ロール回転方向の反進み側で溝の側壁部を成形する部分も、溝の底部を成形する高圧搾部に対し段差をなす低圧搾部として有することを特徴とする請求項3記載の吸収性物品の製造装置。 Wherein the molding protrusion of the pressure roll, having a low compression portion which forms a difference in level portion also, the high compression portion for molding the bottom of the groove for molding the sidewalls of the groove in the counter-leading side of the roll rotation direction apparatus for manufacturing an absorbent article according to claim 3,.
  5. 前記加圧ロールの成形突部が、溝の側壁部を成形する部分を、溝の底部を成形する高圧搾部の周囲全てにわたって該高圧搾部に対し段差をなす低圧搾部として有することを特徴とする請求項3記載の吸収性物品の製造装置。 Characterized in that it has molded projections of the pressure roll, a portion for forming the side wall of the groove, as a low compression portion which forms a difference in level the high compression portions over all the periphery of the high compression portion for molding the bottom of the groove apparatus for manufacturing an absorbent article according to claim 3,.
JP20289098A 1998-07-03 1998-07-03 Method and apparatus for producing an absorbent article Expired - Fee Related JP3568146B2 (en)

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