JP6026840B2 - Design coat application system and application method in body fluid absorbent product production line. - Google Patents

Design coat application system and application method in body fluid absorbent product production line. Download PDF

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JP6026840B2
JP6026840B2 JP2012223763A JP2012223763A JP6026840B2 JP 6026840 B2 JP6026840 B2 JP 6026840B2 JP 2012223763 A JP2012223763 A JP 2012223763A JP 2012223763 A JP2012223763 A JP 2012223763A JP 6026840 B2 JP6026840 B2 JP 6026840B2
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melt adhesive
hot melt
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coating layer
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JP2014076077A (en
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日高章二
武 鶴嶋
武 鶴嶋
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Sun Tool Corp
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Description

本願発明は、体液吸収製品製造ラインにおいて、高速走行中の基材に対して、所定範囲に所定パターンのホットメルト接着剤塗布層を形成するための、デザインコート塗布システムに関するものである The present invention relates to a design coat coating system for forming a hot melt adhesive coating layer having a predetermined pattern in a predetermined range on a substrate running at high speed in a body fluid absorption product manufacturing line.

体液吸収製品（ナフキン、紙おむつ等）の製造に際し、高分子吸収体を内装固定すべく、不透水性シート（バックシート）の基材の表面にホットメルト接着剤塗布面を形成している。
このホットメルト接着剤塗布面を形成するにあたり、塗布ラインを高速化することで、体液吸収製品（ナフキン、紙おむつ等）を大量生産方式による低コスト生産を可能としている。 When manufacturing a body fluid absorbing product (such as naphthin or paper diaper), a hot melt adhesive coated surface is formed on the surface of a base material of a water-impermeable sheet (back sheet) in order to fix the polymer absorbent body internally.
In forming the hot melt adhesive application surface, the application line is speeded up to enable low-cost production of body fluid absorption products (such as nafkin and paper diapers) by a mass production system.

特開平6-198239号公報「カーテンアァイバー状接着剤のスプレー塗布装置」Japanese Patent Application Laid-Open No. 6-198239, “Spray coating apparatus for curtain waiver adhesive”

特許文献1は本願出願人による特許発明であるが、ホットメルト接着剤の塗布面を搬送方向に連続し、シム板の櫛状溝の選択により塗布パターンを適宜選択できるものであり、巾方向（搬送方向と直交方向）には塗布範囲を選択することができる）。
また、ホットメルト接着剤供給を電磁弁ONOFF制御で長手方向（搬送方向）に塗布区間を制御可能ではあるが、塗布ラインは高速走行のため、ごく僅かの長さでの断続は不可能である。即ち、電磁弁の応答限界は0.005秒ないし0.007秒で、塗布ラインの走行速度は毎分300mの条件で、断続塗布長さは25mmないし35mmである。1mmないし10mm（1cm）の塗布長（即ち帯状塗布層）の形成は不可能である。 Patent Document 1 is a patented invention by the applicant of the present application, but the application surface of the hot melt adhesive is continuous in the conveying direction, and the application pattern can be appropriately selected by selecting the comb-like grooves of the shim plate. The application range can be selected in the direction orthogonal to the transport direction).
In addition, the hot melt adhesive supply can be controlled in the longitudinal direction (conveyance direction) by solenoid valve ON / OFF control, but the coating line is traveling at high speed, so it is not possible to intermittently connect with a very short length. . That is, the response limit of the solenoid valve is 0.005 seconds to 0.007 seconds, the traveling speed of the coating line is 300 m / min, and the intermittent coating length is 25 mm to 35 mm. It is impossible to form a coating length of 1 to 10 mm (1 cm) (that is, a strip-shaped coating layer).

よって、本願発明は、体液吸収製造ラインのホットメルト接着剤塗布システム（シート状の基材の表面にホットメルト接着剤塗布面を形成する）において、基材を高速走行させて、おむつ等を大量生産方式による低コスト生産するにあたり、上記の問題点を解消して、塗布範囲へのホットメルト接着剤の塗布量を削減して、製品の柔軟性を高めることを課題とする。 Therefore, the present invention is a hot melt adhesive application system (forms a hot melt adhesive application surface on the surface of a sheet-like base material) of a body fluid absorption production line, and the base material is run at a high speed to produce a large amount of diapers, etc. In the low-cost production by the production method, it is an object to eliminate the above-mentioned problems, reduce the amount of hot melt adhesive applied to the coating range, and increase the flexibility of the product.

本願発明は、高速走行する基材の表面にホットメルト接着剤塗布層を形成する工程を含む体液吸収製品製造ラインにおいて、高速走行する基材の表面に、デザインローラの凹凸版に供給されたホットメルト接着剤を塗布する、デザインコート塗布工程を含み、前記デザインコート塗布工程において、前記デザインローラの凹凸版の多数の帯状凸面により、基材移送方向と直交方向の多数の帯状塗布層を形成するとともに、
不織布シートに、高分子吸収体を固定するにあたり、不織布シートと高分子吸収体との間のホットメルト接着剤塗布層について、中央部の帯状塗布層の相互間の空白部の割合を、周縁部の帯状塗布層の相互間の空白部の割合よりも大としたことを特徴とする。
The present invention relates to a body fluid absorbent product manufacturing line including a step of forming a hot melt adhesive coating layer on the surface of a substrate that runs at high speed. Including a design coat application step of applying a melt adhesive, and in the design coat application step, a plurality of strip-shaped coating layers in a direction orthogonal to the substrate transport direction are formed by a number of strip-shaped convex surfaces of the concavo-convex plate of the design roller. With
In fixing the polymer absorber to the nonwoven fabric sheet, the ratio of the blank portion between the belt-like coating layers in the central portion of the hot melt adhesive coating layer between the nonwoven fabric sheet and the polymer absorber, It is characterized by being larger than the ratio of the blank portion between the belt-like coating layers.

本願発明は、体液吸収製造ラインにおいて、基材を高速で走行させて多量生産方式のホットメルト接着剤塗布システムにおいて、塗布列の間に空白列が存在することで、ホットメルト接着剤の塗布量を減小することができ、製品にホットメルト接着剤の硬化による固形物と肌との接触による違和感を実質的に無くすことができる効果を有する。
体液吸収体製品の柔軟性を高めて製品の使用感を向上することができる。また、製品の透水性を良好にする効果を有する。 In the present invention, in the body fluid absorption production line, in the mass production hot melt adhesive application system in which the base material is run at a high speed, there is a blank line between the application lines, so that the amount of hot melt adhesive applied The product has the effect of substantially eliminating the uncomfortable feeling caused by the contact between the solid and the skin due to the curing of the hot melt adhesive.
The flexibility of the body fluid absorbent product can be increased to improve the feeling of use of the product. It also has the effect of improving the water permeability of the product.

デザインローラ塗布装置を示し、ａ図はその大要を示す説明図、ｂ図は矢視イに示す平面図、ｃ図は矢視ロに示す縦断面図。Indicates de Zainrora coating apparatus, a diagram illustrating, b diagram is a plan view showing the Yashii, c view is a longitudinal sectional view showing the Yashiro indicating the outline. デザインローラの凹凸版を示し、a図は平面図、b図は断面図である。FIG. 3 shows a concavo-convex plate of a design roller, in which FIG. A is a plan view and FIG. 図1に連続する、体液吸収製品製造ラインの大要を示す説明図。FIG. 2 is an explanatory diagram showing the outline of the body fluid absorption product production line that is continued from FIG. 体液吸収製品製造ラインにおけるホットメルト接着剤塗布層の説明図。Explanatory drawing of the hot-melt-adhesive application layer in a bodily fluid absorption product manufacturing line. 本願発明のホットメルト接着剤塗布層の説明図。Illustration of this gun onset Akira of hot-melt adhesive coating layer.

高速走行する基材の表面にホットメルト接着剤塗布層を形成する工程を含む体液吸収製品製造ラインにおいて、高速走行する基材の表面に、デザインローラの凹凸版に供給されたホットメルト接着剤を塗布するデザインローラ塗布装置を設ける。
前記デザインローラの凹凸版には、多数の帯状凸面を形成する。
前記デザインローラの凹凸版について、横断方向の直線帯状凸面を 所定間隔で複数個を連続配置して構成する。
直線帯状凸面の相互間の空白部を、直線帯状凸面の3倍以上の面積とする。
デザインローラの凹凸版の多数の帯状凸面により、基材移送方向と直交方向の多数の帯状塗布面を形成する。
In a body fluid absorption product production line including a step of forming a hot melt adhesive coating layer on the surface of a substrate that runs at high speed, the hot melt adhesive supplied to the uneven plate of the design roller is applied to the surface of the substrate that runs at high speed. A design roller coating device for coating is provided.
A large number of belt-like convex surfaces are formed on the concavo-convex plate of the design roller.
Regarding the concavo-convex plate of the design roller, a plurality of straight belt-like convex surfaces in the transverse direction are continuously arranged at predetermined intervals.
The space between the straight belt-like convex surfaces is set to an area that is at least three times that of the straight belt-like convex surfaces.
A large number of strip-shaped application surfaces in the direction orthogonal to the substrate transport direction are formed by a large number of strip-shaped convex surfaces of the concavo-convex plate of the design roller.

高速走行する基材の表面にホットメルト接着剤塗布層を形成する工程を含む体液吸収製品製造ラインにおいて、高速走行する基材の表面に、デザインローラの凹凸版に供給されたホットメルト接着剤を塗布する、デザインコート塗布工程を含み、
前記デザインコート塗布工程において、前記デザインローラの凹凸版の多数の帯状凸面により、基材移送方向と直交方向の多数の帯状塗布層を形成する。
不織布シートに、高分子吸収体を固定するにあたり、不織布シートと高分子吸収体との間のホットメルト接着剤塗布層について、中央部の帯状塗布層の相互間の空白部の割合を、周縁部の帯状塗布層の相互間の空白部の割合よりも大とする。 In a body fluid absorption product production line including a step of forming a hot melt adhesive coating layer on the surface of a substrate that runs at high speed, the hot melt adhesive supplied to the uneven plate of the design roller is applied to the surface of the substrate that runs at high speed. Including the design coat application process to apply,
In the design coat application step, a large number of strip-shaped coating layers in the direction orthogonal to the substrate transport direction are formed by a large number of strip-shaped convex surfaces of the concavo-convex plate of the design roller.
In fixing the polymer absorber to the nonwoven fabric sheet, the ratio of the blank portion between the belt-like coating layers in the central portion of the hot melt adhesive coating layer between the nonwoven fabric sheet and the polymer absorber, It is larger than the ratio of the blank part between the belt-like coating layers.

図１を参照して、体液吸収体製品(紙おむつ、スフキン等)の製造ライン(高速走行塗布ライン)の一部を示し、不織布シートＡと合成樹脂フイルム(バックシート)Ｂとの高速接着工程に、本願発明を適用した場合を説明する。 Referring to FIG. 1, a part of a production line (high-speed running application line) for body fluid absorbent products (paper diapers, sufkin, etc.) is shown. A case where the present invention is applied will be described.

デザインコート装置1のデザインロール２と押圧ロール３との間に、不織布シートロールａからの不織布シートＡをデザインコート装置のデザインロール２と押圧ロール３との間に供給している。   The non-woven sheet A from the non-woven sheet roll a is supplied between the design roll 2 and the pressing roll 3 of the design coating apparatus between the design roll 2 and the pressing roll 3 of the design coating apparatus 1.

デザインコート装置1のデザインロール２はシリコンゴム平版４が表面に貼り付けられ、シリコンゴム平版4の凸面に、ホットメルト供給ロール5,6よりホットメルト接着剤hが供給されている。 The design roll 2 of the design coating apparatus 1 has a silicon rubber lithographic plate 4 attached to the surface, and hot melt adhesive h is supplied to the convex surface of the silicon rubber lithographic plate 4 from hot melt supply rolls 5 and 6.

シリコンゴム平版4の凸面は、図2に示すごとく、横断方向の帯状凸面7が等間隔で多数形成されている。 As shown in FIG. 2, the convex surface of the silicon rubber lithographic plate 4 is formed with a large number of strip-like convex surfaces 7 in the transverse direction at equal intervals.

移送中の不織布シートＡには、デザインコート装置1のデザインロール２により、図１(ｃ)に示すごとく、横断方向の帯状塗布層８が等間隔で多数形成されることで、ホットメルト接着剤塗布層Hが形成される。 As shown in FIG. 1 (c), the nonwoven fabric sheet A being transported is formed with a plurality of strip-shaped coating layers 8 in the transverse direction at equal intervals, as shown in FIG. A coating layer H is formed.

そののち、圧送ロール9,9を経て、次工程へ送込まれる。 After that, it is sent to the next process through the pressure feed rolls 9 and 9.

その際、帯状塗布層８を介して、不織布シートロールａより供給された不織布シートＡと、バックシートロールｂより供給された合成樹脂フイルム(バックシート)Ｂとは接着されて、中間素材Ｃが完成する。 At that time, the non-woven sheet A supplied from the non-woven sheet roll a and the synthetic resin film (back sheet) B supplied from the back sheet roll b are bonded to each other through the belt-shaped coating layer 8 so that the intermediate material C is formed. Complete.

本願発明は、体液吸収製品製造ラインにおいて、高速走行する基材の表面にホットメルト接着剤塗布層を形成するにあたり、デザインローラ塗布装置を使用してデザインローラの凹凸版の選択により塗布パターンを選択自在とするが、図1ぉょび図2に示す実施例においては、基材移送方向と直交方向の多数の帯状塗布面8は、1mmないし3mm巾で、帯状塗布面8の相互間の空白部kは、3ないし10mmである。
体液吸収製品製造ラインにおいて、基材（不織布）の表面に形成されるホットメルト接着剤塗布層の塗布膜厚さ（例えば、0.01mm）の条件のもとで、上記のこの条件の範囲においては、製品に柔軟性を付与するに充分な空白部kを有し且つホットメルト接着剤塗布層として充分な接着力を有することを確認している。 The invention of the present application selects a coating pattern by selecting a concavo-convex plate of a design roller using a design roller coating device when forming a hot melt adhesive coating layer on the surface of a substrate traveling at high speed in a body fluid absorption product production line. In the embodiment shown in FIG. 1 and FIG. 2, a number of strip-shaped coating surfaces 8 in the direction perpendicular to the substrate transport direction are 1 mm to 3 mm wide, and there are blanks between the strip-shaped coating surfaces 8. The part k is 3 to 10 mm.
In the body fluid absorption product production line, under the condition of the coating film thickness (for example, 0.01 mm) of the hot melt adhesive coating layer formed on the surface of the base material (nonwoven fabric), It has been confirmed that the product has a blank portion k sufficient to impart flexibility to the product and has a sufficient adhesive force as a hot melt adhesive coating layer.

つぎに、図3を参照して、図１の不織布シートＡと合成樹脂フイルム(バックシート)Ｂとの接着による第１工程より完成した中間素材Ｃに、体液吸収用の高分子成型品Ｄを接着する第2工程以下を説明する。 Next, referring to FIG. 3, a polymer molded product D for absorbing body fluid is applied to the intermediate material C completed from the first step by bonding the nonwoven fabric sheet A and the synthetic resin film (back sheet) B in FIG. The second and subsequent steps for bonding will be described.

中間素材Ｃの不織布シートＡに、図1と同様に、デザインコート装置1Aのデザインロール２により、横断方向の帯状塗布層８が等間隔で多数形成されて、ホットメルト接着剤塗布層Hが形成される。 In the same way as in FIG. 1, a plurality of strip-shaped coating layers 8 in the transverse direction are formed at equal intervals on the nonwoven fabric sheet A of the intermediate material C by the design roll 2 of the design coating apparatus 1A to form the hot melt adhesive coating layer H. Is done.

高分子成型品供給装置10により供給された高分子成型品Ｄを、中間素材Ｃの不織布シートＡに接着する。 The polymer molded product D supplied by the polymer molded product supply device 10 is bonded to the nonwoven fabric sheet A of the intermediate material C.

高分子成型品Ｄを接着た中間素材Ｃの上面に、デザインコート装置1Bのデザインロール２により、横断方向の帯状塗布層８が等間隔で多数形成されて、ホットメルト接着剤塗布層HHが形成される不織布シートEを接着する。 On the upper surface of the intermediate material C to which the polymer molded product D is bonded, a plurality of strip-shaped coating layers 8 in the transverse direction are formed at equal intervals by the design roll 2 of the design coating apparatus 1B to form a hot melt adhesive coating layer HH. Bond the nonwoven sheet E to be made.

つぎに、トップシートロールｆより合成樹脂フイルム(トップシート)Ｆを供給し、該トップシートＦに、デザインコート装置1Cのデザインロール２により、横断方向の帯状塗布層８が多数形成されてホットメルト接着剤塗布層HＨを形成する。該ホットメルト接着剤塗布層HＨを介して、高分子成型品Ｄを含む半製品にトップシートＦを接着する。 Next, a synthetic resin film (top sheet) F is supplied from the top sheet roll f, and a plurality of strip-shaped coating layers 8 in the transverse direction are formed on the top sheet F by the design roll 2 of the design coating apparatus 1C. An adhesive application layer HH is formed. The top sheet F is bonded to the semi-finished product including the polymer molded product D through the hot melt adhesive coating layer HH.

そののち、切断工程を経て、体液吸収体製品(紙おむつ、スフキン等)を完成する。 After that, the body fluid absorber product (paper diaper, sufkin, etc.) is completed through a cutting process.

上記のホットメルト接着剤塗布層HHは、図4に示すごとく、横断方向の帯状塗布層８が等間隔で数形成するものであるが、本願発明にさいしては、図5（a）および（b）に示すごとく、中央部の間隔を大として空白部kを増大している。
The above hot-melt adhesive coating layer HH is, as shown in FIG. 4, although the strip coating layer 8 in the transverse direction is to the number formed at regular intervals, when the gun onset Ming, FIGS. 5 (a) And as shown in (b), the space | interval part k is increased by making the space | interval of a center part large.

即ち、図5の（a）は、体液吸収体Dの存在する中央部について空白部kの巾を大とした場合、図5の（b）は、（a）の態様で周縁部に短い帯状塗布層８aを付加した場合をそれぞれ示している。 That is, (a) in FIG. 5 shows that when the width of the blank portion k is increased at the central portion where the body fluid absorber D is present, FIG. The cases where the coating layer 8a is added are shown.

本願発明は、帯状塗布面8を、すべて基材移送方向と直交方向とし、相互間に空白部kが存在することで、帯状塗布面8は長手方向には独立している。したがって、体液吸収製品は長手方向に屈曲自在で、長手方向の長さは自由に変化できる。よって、製品の柔軟性が確保されている。 In the present invention, the belt-like application surface 8 is all orthogonal to the substrate transport direction, and the blank portion k exists between them, so that the belt-like application surface 8 is independent in the longitudinal direction. Therefore, the body fluid absorption product can be bent in the longitudinal direction, and the length in the longitudinal direction can be freely changed. Therefore, the flexibility of the product is ensured.

本願発明においては、不織布シートと高分子吸収体との間のホットメルト接着剤塗布層HHについて、中央部の帯状塗布層の相互間の空白部の割合を、周縁部の帯状塗布層の相互間の空白部の割合よりも大とする [図5の（a）および（b）を参照]ことで、高分子吸収体の柔軟性を高めるとともに、ホットメルト接着剤塗布層が少ないことで、製品の吸水性を高めることができる


In this gun onset bright, the hot-melt adhesive coating layer HH between the nonwoven sheet and the absorbent polymer, the strip coating layers of the central portion the ratio of the blank part between each other, the strip-shaped coating layer of the peripheral portion it larger than the percentage of white space between each other [see (a) and (b) in FIG. 5 that is, to increase the flexibility of the polymer absorber, it is less hot melt adhesive coating layer Can increase the water absorption of the product


本願発明は、体液吸収体製品(紙おむつ、スフキン等)の商品価値を高めことにより、この種の製品の販売増進に寄与するものである。 The present invention contributes to the promotion of sales of this type of product by increasing the commercial value of body fluid absorbent products (such as disposable diapers and sufkins).

Ａ 不織布シートＡと
Ｂ 合成樹脂フイルム(バックシート)Ｂ
Ｃ 中間素材
Ｄ 体液吸収用の高分子成型品
Ｅ 不織布シート
Ｆ 合成樹脂フイルム(トップシート)
Ｈ ホットメルト接着剤塗布層
ｋ 空白部
1 デザインコート装置
2 デザインロール
4 シリコンゴム平版
５ ホットメルト供給ロール
6 ホットメルト供給ロール
7 帯状凸面
8 帯状塗布層


A Non-woven sheet A and B Synthetic resin film (back sheet) B
C Intermediate material D Polymer molded product for absorbing body fluid E Non-woven sheet F Synthetic resin film (top sheet)
H Hot melt adhesive coating layer k Blank area
1 Design coat equipment
2 Design roll
4 Silicon rubber lithographic plate 5 Hot melt supply roll
6 Hot melt supply roll
7 Band-shaped convex surface
8 Strip coating layer


Claims (1)

高速走行する基材の表面にホットメルト接着剤塗布層を形成する工程を含む体液吸収製品製造ラインにおいて、
高速走行する基材の表面に、デザインローラの凹凸版に供給されたホットメルト接着剤を塗布する、デザインコート塗布工程を含み、
前記デザインコート塗布工程において、前記デザインローラの凹凸版の多数の帯状凸面により、基材移送方向と直交方向の多数の帯状塗布層を形成するとともに、
不織布シートに、高分子吸収体を固定するにあたり、不織布シートと高分子吸収体との間のホットメルト接着剤塗布層について、
中央部の帯状塗布層の相互間の空白部の割合を、周縁部の帯状塗布層の相互間の空白部の割合よりも大としたことを特徴とする、
デザインコート塗布式ホットメルト接着剤塗布方法。
In the body fluid absorbent product production line including the step of forming a hot melt adhesive coating layer on the surface of the substrate that runs at high speed,
Including a design coat application process for applying the hot melt adhesive supplied to the concavo-convex plate of the design roller on the surface of the substrate that runs at high speed,
In the design coat application step, by forming a large number of strip-shaped coating layers in the direction orthogonal to the substrate transfer direction, with a large number of strip-shaped convex surfaces of the concavo-convex plate of the design roller ,
The nonwoven fabric sheet, when fixing the absorbent polymer, the hot melt adhesive coating layer between the nonwoven sheet and the absorbent polymer,
The ratio of the blank part between the belt-like coating layers in the central part is larger than the ratio of the blank part between the belt-like coating layers in the peripheral part,
Design coat application type hot melt adhesive application method.
JP2012223763A 2012-10-08 2012-10-08 Design coat application system and application method in body fluid absorbent product production line. Expired - Fee Related JP6026840B2 (en)

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