KR20160033647A - Liquid application device and liquid application method - Google Patents

Liquid application device and liquid application method Download PDF

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Publication number
KR20160033647A
KR20160033647A KR1020157021781A KR20157021781A KR20160033647A KR 20160033647 A KR20160033647 A KR 20160033647A KR 1020157021781 A KR1020157021781 A KR 1020157021781A KR 20157021781 A KR20157021781 A KR 20157021781A KR 20160033647 A KR20160033647 A KR 20160033647A
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South Korea
Prior art keywords
liquid
suction
web
applying
drum
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KR1020157021781A
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Korean (ko)
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KR102047580B1 (en
Inventor
유이치 스즈키
고타 오치
다카시 오노즈카
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유니챰 가부시키가이샤
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • A61F2013/15707—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing

Abstract

The present invention relates to a liquid application device (1, 100) for applying a liquid having a viscosity in the range of 0.05 to 4 Pa s to a continuously transported web (3) used in the manufacture of an absorbent article . The liquid application device (1, 100) comprises a tank (11) for containing liquid, a liquid application nozzle (13) for applying liquid to one surface (3ff) of the web (3) A pump 17 for supplying the liquid to the liquid applying nozzle 13 through the tube 15 and suction devices 5 and 105 having surfaces 5f and 105f facing the other surface 3fs of the web 3 . The surfaces 5f and 105f of the suction devices 5 and 105 include at least the suction area AS for sucking the web 3.

Figure P1020157021781

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid application apparatus and a liquid application method,

The present invention relates to a liquid applying apparatus and a liquid applying method for applying a liquid to a web being conveyed.

Patent Document 1 discloses a method of applying a liquid having a low viscosity such as a lotion, a softener, and a water-soluble antibacterial agent to a sheet constituting an absorbent article in order to improve the feel and feel of an absorbent article such as a paper diaper or sanitary napkin have.

Patent Document 2 discloses a method of manufacturing an absorbent article in which an absorbent article to which a liquid (skin care agent) is applied to a web (composition sheet) being conveyed is continuously produced.

Patent Document 1: Japanese Patent Application Laid-Open No. 2004-229959 Patent Document 2: JP-A No. 2011-143240

The web may be wrinkled or sagged due to its elasticity during transportation, and as a result, there is a fear that the web meanders. Further, there is a case where the liquid applied to the web is not sufficiently impregnated sufficiently in the thickness direction of the web.

However, in Patent Documents 1 and 2, no mention is made thereof.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method and apparatus for reducing the occurrence of wrinkles and sagging of a web during conveyance of the web, An application apparatus and a liquid application method.

In order to solve the above problems, according to the present invention,

A liquid application device for applying a liquid having a viscosity in the range of 0.05 to 4 Pa s to a continuously conveyed web used in the manufacture of an absorbent article,

A tank for containing the liquid,

A liquid applying nozzle for applying the liquid to one side of the web;

A pump for supplying the liquid in the tank to the liquid application nozzle through a tube,

A suction device having a surface facing the other surface of the web,

And,

Wherein the surface of the suction device comprises at least a suction region for suctioning the web

A liquid application device is provided.

Further, in order to solve the above problems, according to the present invention,

A liquid applying method for applying a liquid having a viscosity in the range of 0.05 to 4 Pa s to a continuously conveyed web used in the production of an absorbent article,

A tank for containing the liquid,

A liquid applying nozzle for applying the liquid to one side of the web;

A pump for supplying the liquid in the tank to the liquid application nozzle through a tube,

A suction device having a surface facing the other surface of the web,

And further,

Wherein the surface of the suction device comprises at least a suction region for suctioning the web

Preparing a liquid application device,

A step of sucking the web in the suction region by the suction device,

A process of applying a liquid to the web

Containing

A liquid application method is provided.

According to the present invention, it is possible to provide a liquid applying apparatus and a liquid applying apparatus capable of sufficiently impregnating a liquid having a low viscosity applied to a web while suppressing the occurrence of wrinkling or sagging of the web at the time of conveying the web, A liquid application method is provided.

1 is a schematic view of a liquid applying apparatus according to a first embodiment of the present invention;
Fig. 2 is an enlarged view of Fig. 1 in the vicinity of a suction drum; Fig.
3 is a sectional view taken along line III-III in Fig.
4 is a diagram showing an outer periphery of a suction drum, an inlet roll, and an outlet roll of a liquid application device according to the first embodiment of the present invention.
5 is a partial schematic cross-sectional view of a liquid application apparatus according to a second embodiment of the present invention.
6 is a partial cross-sectional schematic view of a liquid application device according to a modification of the second embodiment of the present invention, similar to Fig.

(First Embodiment)

Now, referring to Figs. 1 to 4, the liquid application device 1 of the first embodiment of the present invention will be described.

1 is a schematic view of a liquid application device 1 according to a first embodiment of the present invention. The liquid applying apparatus 1 applies a liquid having a low viscosity to one surface 3ff of the web 3 being conveyed. In the first embodiment, the web 3 is composed of a binding sheet in which an absorbent body is bonded to a top sheet of a disposable diaper or sanitary napkin with a predetermined gap in the conveying direction MD. In another embodiment, the web 3 is a product, semi-finished product or material of an absorbent article. The absorbent article includes paper diapers, sanitary napkins, and the like.

As shown in Fig. 1, the liquid application device 1 has a suction drum 5 (corresponding to a suction device). The suction drum 5 has a surface 5f facing the other surface 3fs of the web 3. [ In the first embodiment, the web 3 is sucked from the surface 5f of the suction drum 5, and liquid is applied on the surface 5f of the suction drum 5. The structure and operation of the suction drum 5 will be described later in detail.

In the first embodiment, the liquid applying apparatus 1 further includes an inlet roll 7a and an outlet roll 7b, and these are, for example, pre rolls without a drive source. The web 3 is guided by the inlet roll 7a onto the suction drum 5 and more specifically onto the surface 5f of the suction drum 5 and is further guided by the exit roll 7b in the subsequent process .

1, the liquid application device 1 includes a tank 11 for containing liquid and a nozzle 13 (corresponding to a liquid application nozzle) for applying the liquid to the sheet 3. [ The liquid application device 1 further comprises a pump 17 for supplying the liquid contained in the tank 11 to the nozzle 13 through the tube 15. The supply amount of the pump 17 can be changed. The tank 11 is disposed at a position higher than the pump 17. As a result, the liquid in the tank 11 reaches the pump 17 by the self weight of the liquid. A filter 19 for removing impurities mixed in the liquid is disposed in the tube 15 between the tank 11 and the pump 17.

A liquid level meter 21 is disposed at a portion of the tube 15 between the pump 17 and the nozzle 13. The liquid level meter 21 detects the amount of liquid flowing through the tube 15, that is, the amount of liquid actually applied to the sheet 3. [ Therefore, the amount of liquid actually applied to the sheet 3 can be easily detected.

On the other hand, in the first embodiment, the amount of liquid supplied from the liquid application device 1 to the sheet 3 is considerably small and is about 10 ml / min. Therefore, the liquid level meter 21 used in the first embodiment is a Coriolis flow meter. Coriolis flow meters are suitable for measuring the amount of such a small amount of liquid. However, in another embodiment, the liquid level meter 21 is of a different type.

The Coriolis flowmeter is a flow meter that uses the principle of the Coriolis force. That is, for example, when the tube is vibrated while the liquid to be measured is circulated in the U-shaped or straight tube, the tube is deformed. The size of this deformation depends on the flow rate of the liquid flowing through the tube. Therefore, by detecting the magnitude of deformation of the tube, the liquid flow rate can be detected.

In the first embodiment, the nozzle 13 includes a liquid jetting path (not shown), a nozzle valve (not shown) for opening and closing the liquid jetting path, and an air chamber Is provided inside thereof. That is, when air pressure is applied to the air chamber of the nozzle 13, the nozzle valve is opened, and the liquid is ejected from the liquid communication passage. On the other hand, when the application of the air pressure to the air chamber is stopped, the nozzle valve is closed and the ejection of the liquid is stopped.

The liquid application device 1 also has a first compressor 23. The air chamber of the nozzle 13 and the first compressor 23 are connected through the first air tube 25. In this example, the nozzle valve opening / closing solenoid valve 27 is disposed in the first air tube 25 between the nozzle 13 and the first compressor 23. When the solenoid valve 27 for opening and closing the nozzle valve is opened, air pressure is applied to the nozzle 13 to open the nozzle valve. When the nozzle valve opening / closing solenoid valve 27 is closed, the nozzle valve is closed.

Further, the nozzle 13 has an air flow passage (not shown) communicating with or adjacent to the liquid flow passage.

The liquid application device 1 also has a second compressor 29. [ The air flow passage of the nozzle 13 is connected to the second compressor 29 through the second air tube 31. A separate solenoid valve 33 and a regulator 35 for regulating the air pressure in the second air tube 31 are attached to the second air tube 31. When the solenoid valve 33 is opened, compressed air is ejected from the air circulation passage, so that the liquid ejected from the liquid circulation passage through the ejection port 13o is applied to the sheet 3 in an atomized state. When the solenoid valve 33 is closed, the supply of the compressed air to the air passage is stopped.

In another embodiment, liquid is ejected from the nozzle 13 without using compressed air. In another embodiment, liquid is applied to the web 3 by, for example, a brush, roller, or the like.

In the first embodiment, one jetting port 13o is formed in the nozzle 13, and the jetting port 13o is formed in the center of the suction drum 5, and further on one surface 3ff of the web 3, As shown in Fig. The liquid ejected from the ejection port 13o is diffused in a conical shape with the ejection port 13o as a vertex and applied to one surface 3ff of the web 3 with a constant area. In order to change the application range of the liquid to the web 3, particularly the application range of the width direction CD of the web (FIG. 3) orthogonal to the conveyance direction MD, by using the conventional nozzle 13, 13 and the one surface 3ff of the web 3 is changed. Further, in order to widen the application range of the liquid transport direction MD to the web 3, the application time of the liquid is prolonged.

In another embodiment, in order to widen the application range of the liquid in the width direction CD (FIG. 3) of the web, a plurality of jetting outlets aligned in the width direction CD (FIG. 3) of the web 3 Respectively. This makes it possible to change the application range of the liquid in the width direction CD (Fig. 3) of the web without changing the distance of the nozzle 13 from the surface 5f of the suction drum 5. [

In the first embodiment, the liquid has a viscosity in the range of 0.05 to 4 Pa · s at least at the time when the liquid is applied to the sheet 3 at least. Preferably, the liquid has a viscosity in the range of 0.05 to 4 Pa 占 퐏 at 20 to 25 占 폚 and 1 atmosphere pressure. In another embodiment, the liquid is a liquid having a viscosity higher than this. In another embodiment, the liquid is a liquid having a viscosity lower than this.

On the other hand, the viscosity of the liquid is detected as follows. At a desired temperature, kinematic viscosity is detected by a Canon-PenScue viscometer in accordance with JIS K 2283, and density is detected by a vibration type density meter according to JIS K 2249. From the above results, the viscosity at that temperature is calculated using the following equation.

Viscosity (Pa s) = kinematic viscosity (m 2 / s) x density (kg / m 3)

In the first embodiment, the liquid is, for example, a petroleum hydrocarbon, a vegetable oil, a vegetable wax, a fatty acid ester compound, an alkyl ethoxylate, a fatty acid ester ethoxylate, a fatty alcohol or a polysiloxane. In another embodiment, the liquid is a pH adjusting agent, an antibacterial agent, a fragrance, a perfume or the like.

In the first embodiment, the liquid is supplied from the liquid application device 1 to the web 3, for example, the web is a combined sheet of the topsheet and the absorbent body of the disposable diaper, , Intermittently. However, in another embodiment, the liquid is applied intermittently to other portions of the disposable diaper, or to any portion of the other absorbent article. In another embodiment, the liquid is applied to the web 3 continuously from the liquid application device 1 in the transport direction MD.

The liquid application device 1 also has a controller 37. [ The controller 37 is composed of, for example, a computer having a CPU (microprocessor), a memory, an input port, and an output port. To the input port of the controller 37, a liquid level meter 21 and the like are connected. A pump 17, a solenoid valve 27 for opening and closing the nozzle valve, and the like are connected to the output port of the controller 37. The pump 17 and the solenoid valve 27 are controlled based on a signal from the controller 37. The conveying operation of the web 3 is controlled by the controller 37 and the intermittent injection of liquid by the nozzle 13 and specifically the opening of the nozzle valve opening and closing solenoid valve 27 And the timing of closure. As a result, the liquid can be applied to a desired portion of one surface 3ff of the web 3.

Fig. 2 is an enlarged view of Fig. 1 around the suction drum 5, and Fig. 3 is a sectional view taken along the line III-III in Fig. The suction drum 5 includes a rotating portion 5r which rotates together with the drum shaft 5ds and a non-rotating portion 5s which is located inside the suction drum 5 and which does not rotate, It is made of hard material. The rotating portion 5r and the non-rotating portion 5s each extend continuously in the rotating direction of the suction drum 5. [ The drum shaft 5ds is connected to a rotation drive device (not shown) which is a motor, for example, at one end (not shown), and rotates the rotation part 5r of the suction drum 5 Can be driven. In the first embodiment, on the suction drum 5, the radial direction RD is a direction orthogonal to the extending direction of the drum shaft 5ds.

As shown in Fig. 3, the rotation portion 5r includes a side portion 5rs, a peripheral base portion 5rc, and a mesh portion 5rm. The side surface portions 5rs constituting one side surface of the suction drum 5 are connected at the other end 5dse of the drum shaft 5ds by connecting means such as bolts. The outer peripheral base portion 5rc constituting the outer circumferential portion of the suction drum 5 together with the mesh portion 5rm is connected to the outermost portion in the radial direction of the side surface portion 5rs by a connecting means such as a bolt . In the first embodiment, the mesh portion 5rm is formed by stacking a plurality of mesh-shaped sheets, which are meshes constituted by, for example, metal or resin material.

As shown in Fig. 3, the non-rotating portion 5s includes a hollow shaft 5ss and a side wall 5sw. In the hollow shaft 5ss, the drum shaft 5ds is inserted into the hollow portion in a substantially coaxial manner. A bearing 5br is provided between the outer circumferential surface of the drum shaft 5ds and the inner circumferential surface of the hollow shaft 5ss. The hollow shaft 5ss is fixed to, for example, a wall (not shown) of the equipment so as not to rotate and to support the load of the entire suction drum 5. [

The hollow shaft 5ss has a side wall 5sw extending in the radial direction RD of the suction drum 5 between the outer surface of the hollow shaft 5ss and the inner surface of the outer peripheral base portion 5rc on the outer peripheral surface thereof, For example, a bolt. A ring-shaped body 5sr constituted of, for example, a felt, which is in contact with the inner peripheral surface of the outer peripheral base portion 5rc, is attached to the outermost portion in the radial direction of the side wall 5sw. Since the ring-shaped member 5sr continuously extends in the rotating direction of the suction drum 5, it has an annular shape. By the ring-shaped body 5sr, the sliding resistance between the rotating outer peripheral base portion 5rc and the non-rotating side wall 5sw while securing a constant airtightness is reduced. The material of the ring-shaped body 5sr is not limited to felt, but may be other material as long as it exhibits the above functions.

The hollow portion 5h defined by the hollow shaft 5ss, the side wall 5sw, the ring-shaped body 5sr, and the outer peripheral base portion 5rc is defined in the suction drum 5, .

3, an exhaust hole 5swv is formed in the side wall 5sw of the suction drum 5. One end of the duct 41 is connected to the suction drum 5swv in the exhaust hole 5swv, Respectively. Thus, the inside of the duct 41 communicates with the hollow portion 5h. The other end of the duct 41 is connected to an exhaust pump (not shown) for discharging the air inside the hollow portion 5h toward the direction F. [ On the other hand, in the first embodiment, each of the duct 41 and the exhaust pump to be used is one. However, in the case of one exhaust pump, when the suction amount of the air does not reach the desired suction amount, a plurality of exhaust holes 5swv are formed in the side wall 5sw and a plurality of exhaust pumps are respectively connected to the duct 41 So that the suction amount can be increased.

On the other hand, in the first embodiment, in the outer peripheral base portion 5rc, a plurality of through holes 5rcp penetrating from the outer peripheral surface to the inner peripheral surface of the outer peripheral base portion 5rc are formed. The through holes 5rcp are formed so as to be distributed substantially uniformly on the surface of the outer peripheral base portion 5rc. 3, a through hole 5rcp formed on the inner surface of the outer peripheral base portion 5rc is shown, but from the viewpoint of viewability of the drawing, only a part of them is shown in the drawing. As described above, the mesh portion 5rm formed of a plurality of mesh-shaped sheets can pass air. Therefore, the hollow portion 5h is in communication with the outside of the suction drum 5. [

With the above arrangement, an exhaust pump (not shown) discharges the air in the hollow portion 5h, while the hollow portion 5h is provided with a hollow portion 5h which is located on the mesh portion 5rm from the outside of the suction drum 5 Air is introduced through the web 3, the mesh portion 5rm, and the through hole 5rcp of the outer peripheral base portion 5rc.

In the first embodiment, on the other hand, the surface 5f of the suction drum 5 facing the other surface 3fs of the web 3 is sandwiched by the mesh portion 5rm ).

2 and 3, in the first embodiment, the suction drum 5 is provided with a partition (not shown) which is in contact with a part of the inner surface of the outer peripheral base portion 5rc inside the hollow portion 5h The partition 43 is attached to the hollow shaft 5ss or the side wall 5sw by a jig (not shown). The contact portion between the partition 43 and the inner surface of the outer peripheral base portion 5rc is made of, for example, felt from the same point as the ring-shaped body 5sr. The partition 43 interrupts the intake of the suction drum 5 from the outside through the through hole 5rcp of the outer peripheral base portion 5rc at the contact portion.

2, the surface 5f of the suction drum 5 sucks the web 3, which is a length area along the outer periphery of the suction drum 5, A suction region AS, and a non-suction region AN which does not suction the web 3. In another embodiment, the suction drum 5 is not provided with the partition 43 and the surface 5f of the suction drum 5 is a suction region AS in which the entire periphery thereof sucks the web 3 , And further does not include a non-aspiration area (AN).

Therefore, in the first embodiment, the suction drum 5 has a suction region AS including a surface 5f opposed to the other surface 3fs on the opposite side of one surface 3ff to which the liquid is applied, The web 3 is sucked. As described above, the through holes 5rcp are formed so as to be distributed substantially uniformly on the surface of the outer peripheral base portion 5rc. Since the mesh portion 5rm having the above-described configuration is formed on the outer surface of the suction drum 5, the intake path from the outside of the suction drum 5 to each of the through holes 5rcp is made of various It becomes a branch. Therefore, on the surface 5f, the portion of the web 3 located in the suction region AS can be sucked with a substantially uniform suction force regardless of its position.

With the above configuration of the suction drum 5, the web 3 is sucked and held on the surface 5f by being sucked by the suction drum 5. As a result, the web 3 is conveyed along with the rotation of the suction drum 5, and is conveyed by the suction drum 5 in the liquid application apparatus 1 of the first embodiment.

According to the liquid application device 1 of the first embodiment, the following actions and effects can be obtained.

(1) In the first embodiment, the portion of the web 3 located in the suction region AS of the surface 5f of the suction drum 5 is sucked with a substantially uniform suction force as a whole, And is returned. As a result, occurrence of wrinkles or sagging of the web 3 is reduced at the time of conveyance of the web 3, and further, the meandering of the web 3 can be suppressed.

(2) The liquid applied to one surface 3ff of the web 3 is sucked from the other surface 3fs of the web 3, whereby the liquid is introduced into one side 3ff of the web 3, To the other surface 3fs side. As a result, the liquid applied to the web 3 can sufficiently impregnate the inside of the web 3. On the other hand, in order to fully exert this action effect, it is preferable that the web 3 has high air permeability. As described above, the web 3 of the first embodiment does not include a low permeability material such as a plastic film included in the back sheet of the absorbent article and the like, and therefore, the web 3 ) Is preferable because of its high air permeability.

(3) By drawing the web 3 from its thickness direction, the thickness of the web 3 located in the suction area AS of the surface 5f of the suction drum 5 can be reduced. As a result, the liquid applied from one surface 3ff of the web 3 is liable to be impregnated in the thickness direction of the web 3.

(4) Since the liquid is applied to the web 3 without contacting the web 3 with the nozzle 13, even if there is unevenness on the surface of the web 3, the application range of the nozzle 13 The liquid can be applied regardless of such irregularities.

2, the suction area AS of the surface 5f of the suction drum 5 has at least a suction area AS corresponding to the application range of the liquid by the nozzle 13 to the web 3, Which is a length region along the outer periphery of the liquid-receiving portion 5, is preferable. It is difficult for the web 3 to be wrinkled or sagged in the suction area AS of the surface 5f of the suction drum 5 so that the liquid can be appropriately applied to a desired range of one surface 3ff of the web 3 This is because it can be applied. On the other hand, in another embodiment, the suction region AS does not include the liquid application region AA.

Next, Fig. 4 is a diagram showing the outer periphery of the suction drum 5, the inlet roll 7a and the outlet roll 7b of the liquid application apparatus according to the first embodiment of the present invention. 4 is a view showing the suction drum 5, the inlet roll 7a and the outlet roll 7b viewed from the direction of extension of the drum shaft 5ds of the suction drum 5. FIG.

The contact point between the common tangential line L1 of the outer periphery of the suction drum 5 and the inlet roll 7a and the outer periphery of the suction drum 5 is defined as a first point P1, The contact point between the common tangent line L2 of the outer periphery of the suction roll 5 and the outlet roll 7b and the outer periphery of the suction drum 5 is referred to as a second point P2. At this time, the surface 5f of the suction drum 5 extends from the first point P1 to the second point P2 along the outer circumference in the direction opposite to the rotation direction R of the suction drum 5, It is preferable to include a non-aspiration area AN (Fig. 2) in which the web 3 is not sucked in the length area APP along the surface 5f of the web 5. When the web 3 is sucked by the suction drum 5 between the suction drum 5 and the inlet roll 7a and / or between the suction drum 5 and the outlet roll 7b, 3 is not linearly transported, and there is a possibility that the web 3 is not normally transported. In another embodiment, the region APP does not include the non-aspiration region AN (Fig. 2).

On the other hand, the range of the non-suction area AN (Fig. 2) is defined by the dimension and position of the partition 43 in the circumferential direction of the suction drum 5. [

1 and 2, it is preferable that the liquid applying apparatus 1 also has a cover 45 in which the suction drum 5 and the nozzle 13 are accommodated. It is possible to prevent the liquid sprayed from the nozzle 13 from scattering to the surroundings and to prevent dust such as fiber debris flying from the outside of the liquid application device 1 from adhering to the web 3 Because. In the first embodiment, the cover 45 has a box-like shape in which the four sides and the upper side are surrounded. In another embodiment, the liquid application device 1 does not have the cover 45. [

It is preferable that at least one surface of the cover 45 is made of a transparent material so that the inside of the cover 45 can be visually recognized even during use. In the first embodiment, the front surface of the cover 45 is made of a transparent material.

As shown in Fig. 2, the cover 45 is provided with a first opening 45wf for carrying in and out the web 3 therein. At this time, it is preferable that the cover 45 is provided with a second opening 45ws positioned lower than the first opening 45wf in the vertical direction, as shown in Fig. By forming the second openings 45ws separately from the first openings 45wf, more air can be introduced into the cover, and the intake efficiency from the outside of the suction drum 5 can be improved. The second opening 45ws is positioned lower than the first opening 45wf in the vertical direction so that dust such as fiber debris flying around the cover 45 is sucked into the cover 45 Can be suppressed. A plurality of second openings 45ws may be formed on any surface of the cover 45 as long as the second openings 45ws are vertically lower than the first openings 45wf.

Further, in another embodiment, a filter (not shown) is provided in the second opening 45ws so as not to attract dust such as fiber debris. In another embodiment, the cover 45 is not provided with the second opening 45ws.

(Second Embodiment)

The liquid applying apparatus 100 according to the second embodiment of the present invention will now be described with reference to Fig. On the other hand, the second embodiment differs from the first embodiment in particular. In addition, components other than the differences from the second embodiment in the first embodiment are applicable to the second embodiment, and those skilled in the art can arbitrarily combine these components within a range that is obvious to a person skilled in the art.

5 is a partial cross-sectional schematic view of a liquid application apparatus 100 according to a second embodiment of the present invention. On the other hand, in Fig. 5, the mechanism for ejecting the liquid from the nozzle 13 is the same as that of Fig. 1, so the description thereof is omitted.

The second embodiment differs from the first embodiment mainly in that suction of the web 3 is performed by using the suction box 105 (corresponding to the suction device) instead of the suction drum 5 It is different.

As shown in Fig. 5, the web 3 is conveyed on the surface 105f on the upper side in the vertical direction of the suction box 105 by the conveying devices 107a and 107b in the conveying direction MD.

In the second embodiment, the suction box 105 is a rectangular parallelepiped body having a body portion 105b constituting an outer portion of the suction box 105, a hollow portion 105b located on the inner side of the body portion 105b, (105h).

5, an exhaust hole 105bv is formed in a lower portion 105bl of the body portion 105b of the suction box 105, and the exhaust hole 105bv is formed in the exhaust hole 105bv. And one end is connected to the suction box 105. Thereby, the inside of the duct 41 communicates with the hollow portion 105h. The other end of the duct 41 is connected to an exhaust pump (not shown) for discharging the air in the hollow portion 105h toward the direction F. In the second embodiment, as in the first embodiment, a plurality of exhaust holes 105bv are formed in the main body portion 105b, and a plurality of exhaust pumps are connected to the suction box 105 through the duct 41, respectively , The suction amount can be increased.

On the other hand, in the second embodiment, a plurality of through holes 105bp are formed in the upper portion 105bu of the main body portion 105b. The through holes 105bp are formed so as to be distributed substantially uniformly over the entire surface of the upper portion 105bu. A mesh portion 105m identical to the mesh portion 5rm of the first embodiment is formed on the upper surface of the suction box 105 in the vertical direction. The mesh portion 105m composed of a plurality of mesh-shaped sheets can allow air to pass therethrough. Therefore, the hollow portion 105h communicates with the outside of the suction box 105. [

In the second embodiment, on the other hand, the surface 105f of the suction box 105 facing the other surface 3fs of the web 3 has the mesh portion 105 105m.

5, the surface 105f of the suction box 105 is formed so as to be in contact with the surface of the web 105a, which is a length area of the copper surface 105f, in a range where the through hole 105bp is formed, 3). The suction region AS can suction the suction region AS.

In the second embodiment, the web 3 is different from the first embodiment in that the web 3 slides on the surface 105f of the suction box 105. Fig. However, the suction box 105 is sucked and conveyed with a substantially uniform suction force as a whole. As a result, at the time of conveyance of the web 3, occurrence of wrinkles and sagging of the web 3 can be reduced, and the meandering of the web 3 can be suppressed as in the first embodiment.

Also in the second embodiment, as in the first embodiment, the suction area AS is at least the length area of the surface 105f of the suction box 105 and includes the liquid application area AA to which the liquid is applied do. As a result, in the suction area AS of the surface 105f of the suction box 105, wrinkles and sagging are unlikely to occur in the web 3, And can be suitably applied to a desired range. In another embodiment, the suction region AS does not include the liquid application region AA.

(Modified example)

A modification of the second embodiment of the present invention will now be described with reference to Fig. FIG. 6 is a partial cross-sectional schematic view of a liquid application device 100 according to a modification of the second embodiment of the present invention, similar to FIG. In this variant, the liquid application device 100 also comprises a mesh belt 109.

As shown in Fig. 6, the mesh belt 109 extends around the pair of rollers 109a and 109b around the suction box 105. As shown in Fig. In this modified example, the mesh belt 109 is an air-permeable endless belt formed of a mesh-like sheet, which is a mesh made of a material such as metal or resin.

At least one of the pair of rollers 109a and 109b is driven by a driving source such as a servo motor (not shown) such that the mesh belt 109 is moved on the surface 105f of the suction box 105 in the feeding direction MD, (Not shown).

In the suction box 105 of this modified example, an exhaust hole 105bv is formed in one side portion 105bs of the body portion 105b, so that the mesh belt 109 and the duct (not shown) do not interfere with each other , And one end of the duct is connected to the exhaust hole 105bv. The other end of the duct is connected to an exhaust pump (not shown).

As shown in Fig. 6, the liquid application apparatus 100 of the present modification includes an inlet roll 7a and an outlet roll 7b. The web 3 is guided by the inlet roll 7a onto the mesh belt 109 and guided by the exit roll 7b in a subsequent process.

The web 3 positioned on the mesh belt 109 is sucked and held on the outer surface of the mesh belt 109 by being sucked by the suction box 105 in the suction area AS. As a result, the web 3 is conveyed along with the movement of the mesh belt 109, and is conveyed by the mesh belt 109 in the liquid application apparatus 100 of the present modification.

The portion of the web 3 located on the suction region AS of the surface 105f of the suction box 105 is sucked with a substantially uniform suction force as a whole, And is returned. As a result, occurrence of wrinkles or sagging during conveyance is reduced, and further, the meandering of the web 3 can be suppressed.

On the other hand, all the features which can be understood by those skilled in the art from the description of this specification, the drawings and the appended claims are not to be construed as limiting the scope of the present invention, It is to be understood that, unless otherwise stated, or that a technical aspect is not an impossible or insignificant combination, it may be combined independently and in any combination with another feature or features disclosed herein.

As an example, the liquid application apparatus 100 of the second embodiment does not include the cover 45 provided in the liquid application apparatus 1 of the first embodiment. However, it is also within the scope of the present invention that the liquid application apparatus 100 of the second embodiment has the cover (45) for housing the nozzle (13) and the suction box (105) .

The present invention is defined as follows.

(1) A liquid application device for applying a liquid having a viscosity in the range of 0.05 to 4 Pa · s to a continuously conveyed web, which is used in the production of an absorbent article,

A tank for containing the liquid,

A liquid applying nozzle for applying the liquid to one side of the web;

A pump for supplying the liquid in the tank to the liquid application nozzle through a tube,

A suction device having a surface facing the other surface of the web,

And,

Wherein the surface of the suction device comprises at least a suction region for suctioning the web

Liquid application device.

(2) said suction region comprises at least a liquid application region to which said liquid is applied

(1).

(3) The suction device is a suction drum,

The surface of the suction device is an outer peripheral surface of the suction drum,

The web is conveyed together with the rotation of the suction drum while being sucked by the suction drum rotationally driven

(1) or (2).

(4) an inlet roll for guiding the web to the suction drum, and an outlet roll for guiding the web from the suction drum to a subsequent process,

Wherein the surface of the suction device has a contact point between a common tangential line of the outer circumference of the suction drum and the outer circumference of the inlet roll and the outer circumference of the suction drum as a first point, And a suction port for sucking the web in a region from the first point to the second point along the outer periphery in a direction opposite to the rotation direction of the suction drum when the contact point with the outer periphery of the suction drum is a second point, Comprising a suction region

(3).

(5) The suction device is a suction box,

The surface of the suction device is a surface on the upper side in the vertical direction of the suction box,

The web is conveyed on the surface of the suction box, while being sucked by the suction box

(1) or (2).

(6) The apparatus according to (1), further comprising a mesh belt engaged around the suction box,

The web is conveyed along with the movement of the mesh belt

(5).

(7) The liquid applicator according to any one of

The liquid application device according to any one of (1) to (6).

(8) In the cover,

A first opening for carrying the web into and out of the cover,

And a second opening located below the first opening in the vertical direction is formed

(7).

(9) the liquid is applied intermittently to the web

The liquid applying apparatus according to any one of (1) to (8).

(10) A liquid applying method for applying a liquid having a viscosity in the range of 0.05 to 4 Pa · s to a continuously conveyed web, which is used for producing an absorbent article,

A tank for containing the liquid,

A liquid applying nozzle for applying the liquid to one side of the web;

A pump for supplying the liquid in the tank to the liquid application nozzle through a tube,

A suction device having a surface facing the other surface of the web,

And further,

Wherein the surface of the suction device comprises at least a suction region for suctioning the web

Preparing a liquid application device,

A step of sucking the web in the suction region by the suction device,

A process of applying a liquid to the web

Containing

Liquid application method.

1, 100: liquid applying device 3: web
3ff: one face 3fs: the other face
5: Suction drum (suction device) 5f: Surface
11: tank 13: nozzle (liquid application nozzle)
15: tube 17: pump
105: suction box (suction device) 105f: surface
AS: suction region

Claims (10)

A liquid application device for applying a liquid having a viscosity in the range of 0.05 to 4 Pa s to a continuously conveyed web used in the manufacture of an absorbent article,
A tank for containing the liquid,
A liquid applying nozzle for applying the liquid to one side of the web;
A pump for supplying liquid in the tank to the liquid application nozzle through a tube,
A suction device having a surface facing the other surface of the web,
And,
Wherein the surface of the suction device comprises a suction area for suctioning the web. The apparatus of claim 1, wherein the suction region comprises a liquid application region to which the liquid is applied. The suction device according to claim 1 or 2, wherein the suction device is a suction drum,
Wherein the surface of the suction device is an outer peripheral surface of the suction drum,
Wherein the web is conveyed together with the rotation of the suction drum while being sucked by the suction drum rotationally driven. The apparatus of claim 3, further comprising: an inlet roll for guiding the web to the suction drum; and an outlet roll for guiding the web from the suction drum to a subsequent process,
Wherein the surface of the suction device has a contact point between a common tangential line of the outer circumference of the suction drum and the outer circumference of the inlet roll and the outer circumference of the suction drum as a first point, And a second suction unit for sucking the web in a region from the first point to the second point along the outer periphery in a direction opposite to the rotating direction of the suction drum when the contact point with the outer periphery of the suction drum is a second point, Region. ≪ / RTI > 3. The apparatus according to claim 1 or 2, wherein the suction device is a suction box,
Wherein the surface of the suction device is a surface on the upper side in the vertical direction of the suction box,
Wherein the web is conveyed on the surface of the suction box while being sucked by the suction box. 6. The apparatus according to claim 5, further comprising a mesh belt extending around the suction box,
Wherein the web is conveyed along with the movement of the mesh belt. 3. The liquid applying device according to claim 1 or 2, further comprising a cover in which the liquid application nozzle and the suction device are accommodated. 8. The apparatus according to claim 7, wherein the cover
A first opening for carrying the web into and out of the cover,
And a second opening located below the first opening in the vertical direction. 3. The liquid applying apparatus according to claim 1 or 2, wherein the liquid is intermittently applied to the web. A liquid applying method for applying a liquid having a viscosity in the range of 0.05 to 4 Pa s to a continuously conveyed web used in the production of an absorbent article,
A tank for containing the liquid,
A liquid applying nozzle for applying the liquid to one side of the web;
A pump for supplying liquid in the tank to the liquid application nozzle through a tube,
A suction device having a surface facing the other surface of the web,
And
The surface of the suction device including a suction area for sucking the web;
A step of sucking the web in the suction region by the suction device,
A process of applying a liquid to the web
≪ / RTI >
KR1020157021781A 2013-07-22 2014-06-30 Liquid application device and liquid application method KR102047580B1 (en)

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PCT/JP2014/067407 WO2014192980A1 (en) 2013-07-22 2014-06-30 Liquid application device and liquid application method

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5748807B2 (en) * 2013-07-22 2015-07-15 ユニ・チャーム株式会社 Liquid application apparatus and liquid application method
JP6475975B2 (en) * 2014-12-25 2019-02-27 ユニ・チャーム株式会社 Absorbent article manufacturing method and absorbent article manufacturing apparatus
WO2020178665A2 (en) * 2019-03-02 2020-09-10 Lohia Corp Limited A composite bag and a method of and an apparatus for making it

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06278131A (en) * 1993-03-25 1994-10-04 Kao Corp Water absorbing polymer and pulp mixing method and absorbing element producing apparatus using the same
US5711994A (en) * 1995-12-08 1998-01-27 Kimberly-Clark Worldwide, Inc. Treated nonwoven fabrics
JP2000505847A (en) * 1996-12-20 2000-05-16 ザ、プロクター、エンド、ギャンブル、カンパニー Dry laid structure containing particulate material
JP2000303347A (en) * 1999-03-22 2000-10-31 Gerold Fleissner Method and device for producing perforated fleece material by hydraulic perforating processing
US20040074052A1 (en) * 2002-10-16 2004-04-22 Kimberly-Clark Worldwide, Inc. Fiber blending apparatus and method
JP2004169235A (en) * 2002-11-21 2004-06-17 Kao Corp Method for producing bulky nonwoven fabric
JP2004229959A (en) 2003-01-31 2004-08-19 Daio Paper Corp Manufacturing method for absorptive article
KR20050090426A (en) * 2002-12-30 2005-09-13 킴벌리-클라크 월드와이드, 인크. Absorbent products with enhanced rewet, intake, and stain masking performance
JP2011143240A (en) 2009-12-14 2011-07-28 Kao Corp Method for manufacturing absorptive article
JP2011200633A (en) * 2010-03-01 2011-10-13 Kao Corp Method for manufacturing absorptive article
JP2013063385A (en) * 2011-09-16 2013-04-11 Kao Corp Coating method and method of producing absorbent article
US20150094682A1 (en) * 2013-09-30 2015-04-02 Kimberly-Clark Worldwide, Inc. Method Of Forming An Absorbent Structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5711991A (en) * 1995-11-20 1998-01-27 Aluminum Company Of America Process for making lithographic sheet material having a thermoplastic adhesive layer
CN102573732B (en) * 2009-12-14 2016-06-08 花王株式会社 The manufacture method of absorbent commodity
JP5631035B2 (en) * 2010-03-29 2014-11-26 ユニ・チャーム株式会社 Nonwoven sheet
JP6161238B2 (en) * 2012-04-02 2017-07-12 ユニ・チャーム株式会社 Applicable equipment
JP5748807B2 (en) * 2013-07-22 2015-07-15 ユニ・チャーム株式会社 Liquid application apparatus and liquid application method

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06278131A (en) * 1993-03-25 1994-10-04 Kao Corp Water absorbing polymer and pulp mixing method and absorbing element producing apparatus using the same
US5711994A (en) * 1995-12-08 1998-01-27 Kimberly-Clark Worldwide, Inc. Treated nonwoven fabrics
JP2000505847A (en) * 1996-12-20 2000-05-16 ザ、プロクター、エンド、ギャンブル、カンパニー Dry laid structure containing particulate material
JP2000303347A (en) * 1999-03-22 2000-10-31 Gerold Fleissner Method and device for producing perforated fleece material by hydraulic perforating processing
US20040074052A1 (en) * 2002-10-16 2004-04-22 Kimberly-Clark Worldwide, Inc. Fiber blending apparatus and method
JP2004169235A (en) * 2002-11-21 2004-06-17 Kao Corp Method for producing bulky nonwoven fabric
KR20050090426A (en) * 2002-12-30 2005-09-13 킴벌리-클라크 월드와이드, 인크. Absorbent products with enhanced rewet, intake, and stain masking performance
JP2004229959A (en) 2003-01-31 2004-08-19 Daio Paper Corp Manufacturing method for absorptive article
JP2011143240A (en) 2009-12-14 2011-07-28 Kao Corp Method for manufacturing absorptive article
JP2011200633A (en) * 2010-03-01 2011-10-13 Kao Corp Method for manufacturing absorptive article
JP2013063385A (en) * 2011-09-16 2013-04-11 Kao Corp Coating method and method of producing absorbent article
US20150094682A1 (en) * 2013-09-30 2015-04-02 Kimberly-Clark Worldwide, Inc. Method Of Forming An Absorbent Structure

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TWI638647B (en) 2018-10-21
TW201529051A (en) 2015-08-01
JP2015019927A (en) 2015-02-02
JP5748806B2 (en) 2015-07-15
KR102047580B1 (en) 2019-11-21
IN2015DN00312A (en) 2015-06-12
WO2014192980A1 (en) 2014-12-04

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