JP2022122246A - Soiling inhibitor used in papermaking process and soiling inhibitor feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an amount of a soiling inhibitor to be fed while maintaining its soiling prevention effect.

SOLUTION: A soiling inhibitor is used in a papermaking process and contains water and a surfactant and further contains butyl stearate or butyl palmitate. A soiling inhibitor feeder for feeding the soiling inhibitor has: a feeding unit for feeding a papermaking device or a paper sheet with the soiling inhibitor; and a control unit for controlling the feeding unit to feed the soiling inhibitor intermittently.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to an anti-fouling agent and an anti-fouling agent supply device for preventing contamination from sticking to a papermaking machine or paper in a papermaking process.

Among the paper manufacturing processes, for example, in the process of manufacturing a corrugated board sheet, after corrugating the corrugating medium, the corrugating medium and the back liner are adhered together with an adhesive to form a single-faced corrugated board sheet. Further, the single-faced corrugated cardboard sheet and the front liner are bonded together with an adhesive to form a corrugated board sheet, which is a finished paper sheet. During this bonding process, the adhesive may adhere to the manufacturing machine as dirt.

In addition, in the paper manufacturing process for making paper sheets other than corrugated cardboard sheets, for example, in the paper making process, paper strength agents added to give strength to the paper of the product, adhesives and synthetic resins mixed in the paper raw material Pitch, hot melt, etc. may adhere to the manufacturing machine as contamination.

These contaminants on the production machine can migrate from the production machine back onto the paper sheet, resulting in contaminants on the finished paper sheet. Alternatively, irregularities in solidified dirt on the manufacturing machine can deform or damage the paper sheet.

For this reason, conventionally, the work of removing the dirt from the manufacturing machine has been carried out manually, or a release agent has been supplied to the manufacturing machine in order to remove the dirt or prevent the adhesion of the dirt.

In Patent Document 1, in the corrugated board manufacturing process, a release agent is once adhered to the surface of the adhesion roll by a spraying means in front of a double facer device for laminating a liner with a core between a hot plate and a pressure contact belt. Later, there is a disclosure that a release agent is adhered to the liner by the adhesion roll, thereby preventing contamination of the surface of the hot plate.

However, in the release agent and its spraying device as in Patent Document 1, the release agent must be continuously adhered to the liner, and the release agent is continuously sprayed, so it is necessary to spray a large amount of the release agent. there were.

JP-A-7-195591

An object of the present invention is to reduce the amount of antifouling agent to be supplied while maintaining the antifouling effect.

The antifouling agent of the present disclosure is an antifouling agent used in the papermaking process and contains water and a surfactant, and the antifouling agent further contains butyl stearate.

The anti-fouling agent supply device of the present disclosure is an anti-fouling agent supply device that supplies the anti-fouling agent, wherein the anti-fouling agent is applied to the paper manufacturing apparatus used in the paper manufacturing process or the paper sheet used in the paper manufacturing process. a supply unit that supplies the agent; and a control unit that controls the supply unit to intermittently supply the antifouling agent.

The antifouling agent of the present invention can maintain an excellent antifouling effect at relatively high temperatures for a relatively long period of time.
In addition, the antifouling agent supplying device of the present invention can reduce the amount of the antifouling agent supplied, that is, the amount used, by intermittently supplying the antifouling agent that maintains the antifouling effect. .

Schematic diagram showing a double facer device according to an embodiment of the present invention FIG. 2 is an explanatory diagram showing the configuration of the antifouling agent supply device according to the embodiment of the present invention and its positioning in the double facer device; FIG. 2 is a flowchart of the operation of the antifouling agent supply device of the embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

It should be noted that the present invention means the invention described in the scope of claims or the section of Means for Solving the Problems, and is not limited to the following embodiments. In addition, at least the words and phrases in angle brackets mean the words and phrases described in the claims or the means for solving the problems section, and are not limited to the following embodiments.

The configurations and methods described in the dependent claims are arbitrary configurations and methods in the invention described in the independent claims. The configurations and methods of the embodiments corresponding to the configurations and methods described in the dependent claims, and the configurations and methods described only in the embodiments without being described in the claims, are optional configurations and methods in the present invention. The configuration and method described in the embodiment when the description of the claims is broader than the description of the embodiment are also arbitrary configurations and methods in the present invention in the sense that they are examples of the configuration and method of the present invention. . In either case, the essential features and methods of the invention are described in the independent claims.

The effects described in the embodiments are the effects when having the configuration of the embodiment as an example of the present invention, and are not necessarily the effects of the present invention.

When there are multiple embodiments, the configuration disclosed in each embodiment is not limited to each embodiment, but can be combined across the embodiments. For example, a configuration disclosed in one embodiment may be combined with another embodiment. In addition, the configurations disclosed in each of a plurality of embodiments may be collected and combined.

The problems described in the Problems to be Solved by the Invention are not known problems, but were independently discovered by the inventors, and are facts that affirm the inventive step of the invention together with the structure and method of the present invention.

(1) Paper manufacturing process and paper manufacturing apparatus according to the present embodiment First, a paper manufacturing process using the antifouling agent supply device of the present embodiment and a paper manufacturing apparatus used in the paper manufacturing process will be described.

The paper manufacturing process according to the present embodiment is a corrugated cardboard sheet manufacturing process using a corrugating machine. A corrugated board sheet is manufactured by laminating three sheets of corrugated board base paper, a core base paper, a back liner, and a front liner, and the overall device for the manufacturing process is called a corrugating machine.

The paper manufacturing apparatus according to this embodiment is a double facer apparatus.
A corrugating machine is roughly divided into two devices, a single facer device and a double facer device.
A single-facer device is a device that forms corrugated corrugating medium, applies glue to it, and attaches it to one liner to create a single-faced corrugated board sheet.
A double-facer device is a device that applies glue to a single-faced corrugated board sheet and attaches it to the other liner to create a corrugated board sheet.

As an example of the construction of the antifouling agent of the present embodiment and of a paper manufacturing apparatus using the antifouling agent of the present embodiment, the configuration of a double facer apparatus will be described.

The double facer device 10 will be described with reference to FIG.
The double facer device 10 bonds a single-faced corrugated board sheet SF and a liner L with an adhesive to create a double-faced corrugated board sheet DF which is a finished paper sheet.
The double facer device 10 comprises a gluing section 11 , a conveying roller 12 , a hot plate 13 , a belt conveyor 14 , and an antifouling agent supply device 100 .
The gluing section 11 comprises a gluing roller 11a and a gluing tank 11b.

The gluing unit 11 applies gluing to the single-faced cardboard sheet SF.
A single-faced corrugated cardboard sheet SF is conveyed from the left side of the drawing with the corrugated surface on the core raw paper side facing downward, and contacts the gluing roller 11a. The single-faced corrugated board sheet SF is formed by corrugating core raw paper and bonding the core raw paper and one liner together with an adhesive.

The paste tank 11b contains paste prepared with, for example, starch as a main component. The gluing roller 11a contacts the glue in the glue tank 11b and the apex of the corrugated surface, which is the lower surface of the single-faced corrugated cardboard sheet SF, to adhere the glue to the lower surface of the single-faced corrugated board sheet SF.
Note that the liner L may be glued instead of the single-faced corrugated cardboard sheet SF.

The glued single-faced corrugated board sheet SF is conveyed toward the hot plate 13 .

The conveying roller 12 conveys the liner L, which is the other liner, toward the hot plate 13 .

The liner L is carried into the transport rollers 12 of the double facer device 10 from a roll stand (not shown).
The hot plate 13 (corresponding to the "hot plate" of the present invention) heats the single-faced corrugated cardboard sheet SF and the liner L (corresponding to the "liner" of the present invention) bonded together. For example, it is an assembly of heater plates controlled to a constant temperature of 160°C to 180°C.

here,
"Liner" refers to the cardboard on both sides of corrugated corrugated core paper that is sandwiched from both sides and pasted together. There may be.
A "hot plate" includes not only a single plate but also a combination of a plurality of members that can be functionally regarded as a plate. For example, it includes a plate-like structure as an aggregate of round bar heaters, a canvas belt, and the like.

The hot plate 13 guides the pasted single-faced corrugated cardboard sheet SF and the liner L between itself and the belt conveyor 14, and presses them while heating them.

The single-faced corrugated cardboard sheet SF and the liner L that are pressed together form one sheet, and the sheet is dried by heat and conveyed rightward in the figure by the belt conveyor 14 that is driven to rotate counterclockwise. As a result, the single-faced corrugated board sheet SF and the liner L are completed as a double-faced corrugated board sheet DF.

The antifouling agent supply device 100 is a device that supplies an antifouling agent, and includes a spray section 101 .

The spray unit 101 is located in the process on the front side of the hot plate 13 of the double facer device 10 or in the process before the double facer device 10 .

Specifically, as shown in FIG. 1 , the spray unit 101 is arranged below the transport roller 12 that transports the liner L, and sprays the antifouling agent onto the transport roller 12 .

The antifouling agent adhering to the conveying roller 12 is transferred from the conveying roller 12 to the liner L, and then transferred to the hot plate 13 from the liner L that moves thereafter.

When the antifouling agent transfers to the hot plate 13, it coats the surface of the hot plate 13 to form a film. The film of the antifouling agent prevents the adhesion of fouling. Also, even if dirt adheres, it can be removed immediately.

The spray section 101 may supply the antifouling agent to the hot plate 13 instead of the conveying roller 12 .
For example, when a plurality of members constituting the hot plate 13 are also constituent elements of a belt conveyor, the spray section 101 is arranged on the back side of the belt conveyor, and while these members are not in contact with the liner L, these members are It is sufficient to supply the antifouling agent to the

As will be described later, the antifouling agent of the present embodiment can maintain the antifouling effect for a relatively long time even in a high-temperature environment such as the surface of the hot plate 13 .

Therefore, the antifouling agent of this embodiment is also compatible with the antifouling agent supply device of this embodiment, which intermittently supplies the antifouling agent. This point will also be described later.

(2) Antifouling Agent The antifouling agent of the present embodiment will be described.
Table 1 shows examples of blending components and contents in this embodiment.

As shown in Table 1, the antifouling agent of the present embodiment contains an ester of ricinoleic acid and glycerin, butyl stearate, a surfactant, a preservative, and the rest is water.
Each component will be described below.

(2-1) Ricinoleic acid or an ester of ricinoleic acid and glycerin The antifouling agent of the present embodiment is an antifouling agent that "prevents" the "adhesion" of "dirt" used in the "papermaking process". , ricinoleic acid, or an ester of ricinoleic acid and glycerin.

here,
"Paper manufacturing process" can be any process from paper raw material to manufacturing of final paper products, not only the paper manufacturing process, but also the paper manufactured in the paper manufacturing process, such as coating. It also includes a process and a process of processing such as pasting the paper together. In addition to the paper manufacturing equipment, the equipment that constitutes the paper manufacturing process also includes conveying equipment, heating equipment, drying equipment, and equipment that functions integrally with the members or parts used therein.
The term "dirt" includes glue or adhesives for adhering paper or paper raw materials, resin or pitch contained in paper raw materials or used paper, and pigments or paints used for coating paper.
"Adhesion" includes not only the adhesion of dirt to the paper manufacturing equipment, but also the adhesion of dirt to the paper, and in the case of glue or adhesive, the dirt adheres to areas other than the adhesion points of the paper as unnecessary or excessive substances. include.
"Prevention" includes not only preventing dirt from adhering to objects such as paper manufacturing equipment and paper, but also removing dirt once adhered to objects.

Ricinoleic acid is ricinoleic acid in English notation, and is also called ricinoleic acid and 12-hydroxy-9-cis-octadecenoic acid. Ricinoleic acid is a highly chemically reactive fatty acid having a hydroxyl group (--OH) and a double bond in one molecule.

An ester of ricinoleic acid and glycerin is obtained by ester-bonding ricinoleic acid to at least one of the three hydroxyl groups of glycerin, and ricinoleic acid In addition, triglycerides in which ricinoleic acid is ester-bonded to all three hydroxy groups are included.

Esters of ricinoleic acid and glycerin are oils and fats that are liquid at room temperature and are excellent in maintaining an oil film at high temperatures. For example, the surface temperature of the hot plate 13 of the double facer device in FIG. do. This oil film has lubricating properties and hydrophobic properties, and prevents adhesion of dirt such as glue to the hot plate 13 .
In addition, the oil film formed by the ester of ricinoleic acid and glycerin is highly viscous and difficult to break, and the effect of preventing the adhesion of dirt lasts for a long time.

In addition, esters of ricinoleic acid and glycerin are compatible with many organics and printing inks. Therefore, even if printing is performed on a paper sheet to which the ester has adhered, the adhesion of the ink, that is, the degree of adhesion of the ink, does not deteriorate.

In addition, the antifouling agent may contain castor oil as a fat containing an ester of ricinoleic acid and glycerin.

About 90% of the constituent fatty acids of castor oil are triglycerides of ricinoleic acid (one molecule of glycerol (glycerol) and three molecules of ricinoleic acid are ester-bonded), and a soil adhesion preventive agent containing only triglycerides of ricinoleic acid; The effect of preventing the adhesion of dirt is almost unchanged.

The content of the ester of ricinoleic acid and glycerin is preferably 7% by weight or more and 20% by weight or less.
In particular, 8% by weight or more and 15% by weight or less is preferable. If it is less than 7% by weight, the effect of the oil film will be reduced. On the other hand, if it exceeds 20% by weight, it becomes difficult to handle as an antifouling agent.

The ricinoleic acid and glycerin ester may be a condensed ricinoleic acid and glycerin ester. Since ricinoleic acid is an unsaturated fatty acid having a hydroxy group, it is possible to form condensed ricinoleic acid by ester-bonding ricinoleic acids to improve heat resistance.

Esters of glycerin may include derivatives of glycerin esters (glycerides) in which organic acids are ester-bonded to some of the hydroxy groups of glycerin, and polyglycerin esters.

In addition, since ricinoleic acid itself also has lubricity, ricinol is used as an antifouling agent in the papermaking process instead of using ricinoleic acid and glycerin esters, which are fats and oils, or in addition to ricinoleic acid and glycerin esters. It may contain the acid itself directly.

As described above, according to the antifouling agent of the present embodiment, by containing ricinoleic acid or an ester of ricinoleic acid and glycerin, it is possible to prevent the adhesion of fouling at a relatively high temperature, for example, around 200 ° C., and the effect is improved. It has excellent effect that it lasts for a long time and does not adversely affect the paper sheet of the product.

(2-2) Butyl stearate The antifouling agent of the present embodiment contains butyl stearate.

Butyl stearate is a stearic acid ester of butanol, has low viscosity, and is excellent in fluidity, transferability, spreadability, lubricity, and permeability. Butyl stearate is also called butyl stearate.

For example, in the double facer device 10 shown in FIG. It can be easily moved and transferred to the liner L and from the liner L to the hot plate 13 .

Furthermore, the effect is maintained even on the hot plate 13, which is in a high temperature environment of about 200°C. The lubricity of esters and the like can be enhanced.

Of course, the characteristics can be exhibited not only in a high-temperature environment such as the hot plate 13 but also in an environment around 100° C. such as a dry part in the papermaking process.

By the way, since the surface temperature of the conveying roller 12 of the double facer device is about 50° C. to 60° C., in order for the component that imparts transferability, lubricating properties, and the like to exert its effect as a liquid when sprayed onto the conveying roller 12, the The melting point of the component is desirably 40°C or less.

The melting point of butyl stearate is about 17°C to 22°C.
Therefore, even when the butyl stearate is dispersed on the conveying roller 12, the butyl stearate can be easily melted and its properties can be fully exhibited.

The content of butyl stearate is preferably 0.05% by weight or more and 0.5% by weight or less.
If the amount is less than 0.05% by weight, the effects of fluidity and transferability are reduced. Even if it exceeds 0.5% by weight, the effect does not change much, so the above range is a range in which the desired effect can be expected and the material is not wasted.

In addition to butyl stearate, a low-melting wax may be contained.
Moreover, in addition to butyl stearate or instead of butyl stearate, butyl palmitate having a melting point of about 14° C. may be contained.

(2-3) Other Components The antifouling agent further contains water and a surfactant, and may further contain a preservative.

The surfactant is added mainly for the purpose of emulsifying oils and fats, and is not particularly limited.
Any of nonionic surfactants, anionic surfactants, and cationic surfactants may be used as the surfactant. Examples of nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyethylene alkylphenyl ethers, coconut oil fatty acid diethanolamides, palm kernel oil fatty acid diethanolamides, and the like.
In addition, as the surfactant, not only one type but also a plurality of types of surfactants may be contained as appropriate.

The antifouling agent may contain a preservative as another component.
Bacteria do not propagate in the antifouling agent, and the antifouling agent can be stored for a long period of time.

The content of the antifouling agent includes 1% by weight or more and 5% by weight or less of a surfactant, 1% by weight or less of a preservative, and the rest is water.

(2-4) Effect When the antifouling agent of the present embodiment is used, the number of times of cleaning for stopping the double facer device and removing the stain is 11 to 55% compared to the case where no agent is used. The average was 42%. In addition, the time taken to stop the double facer device for cleaning was 26% on average. The reason why the reduction rate of the stop time is smaller than the reduction rate of the number of times of cleaning is that if the antifouling agent of the present embodiment is used, the adhesion of dirt itself is reduced, and the time required for cleaning can be shortened.

(2-5) Summary As described above, according to the antifouling agent of the present embodiment, the antifouling agent prevents fouling at relatively high temperatures, the effect lasts for a long time, and the paper sheet of the product is adversely affected. has the effect of not Transferability, fluidity, and lubricity can be improved when the antifouling agent is indirectly supplied in the papermaking process.

According to the anti-fouling agent of the present embodiment, the anti-fouling effect lasts for a long time. The amount of agent can be reduced and there is no need to supply it constantly.
Therefore, it can be used as an antifouling agent to be intermittently supplied in the antifouling agent supply device of the present embodiment.
In addition, the amount of antifouling agent can be minimized and the cost can be reduced.

It should be noted that it is not essential to intermittently supply the antifouling agent, and it is also possible to continuously supply the antifouling agent little by little.

(3) Antifouling agent supply device (3-1) Overall configuration of antifouling agent supply device The overall configuration of the antifouling agent supply device of the present embodiment will be described.

FIG. 2 is a conceptual diagram seen from AA in FIG.
The configuration of the antifouling agent supply device 100 of this embodiment and the relationship with the double facer device 10 will be described with reference to FIG.

In this embodiment, the corrugated cardboard sheet manufacturing process using the corrugating machine corresponds to the "paper manufacturing process", the double facer apparatus 10 corresponds to the "paper manufacturing apparatus", and the liner L corresponds to the "paper sheet".

The anti-fouling agent supply device 100 is a device for supplying an anti-fouling agent, and is composed of a spray section 101 , a chemical pressure tank 102 and a control section 103 .

The spray unit 101 (corresponding to the "supply unit" of the present invention) "supplies the antifouling agent to the double facer device 10 (corresponding to the "paper manufacturing apparatus" of the present invention) used in the manufacturing process of corrugated cardboard sheets using a corrugating machine. "do.
More specifically, the spray unit 101 includes a spray nozzle 105 and “sprays” the antifouling agent onto the transport rollers 12 of the double facer device 10 .

here,
"Paper-making equipment" means equipment that produces paper sheets or machines that are equipped to produce paper sheets.
The term "supply" includes, in addition to spraying, coating, coating with rolls, doctor blades, etc., and discharge (dispenser).
"Spraying" includes spraying liquid in the form of mist, spraying liquid in the form of foam, and spraying solid fine particles.

The antifouling agent adhering to the conveying roller 12 is transferred from the conveying roller 12 to the liner L and further transferred from the liner L to the hot plate 13 .

Although the spray unit 101 sprays the antifouling agent onto the transport roller 12, it may be sprayed onto the liner L (corresponding to the “paper sheet” of the present invention) without going through the transport roller 12. FIG.

here,
"Paper sheet" means finished or semi-finished paper. For example, in the case of corrugated cardboard sheets, finished products include laminated corrugated cardboard sheets, and semi-finished products include corrugated board liners and core paper before being laminated. In addition, "paper sheet" includes, for example, corrugated cardboard, copy paper, cosmetic paper, tissue paper, toilet paper, and the like, regardless of the type of paper.

The chemical pressurization tank 102 stores the antifouling agent and pressurizes the antifouling agent with a suitable pressure so that the antifouling agent can be atomized and atomized as desired in the spray section 101 .

The controller 103 controls the supply unit to "intermittently" supply the antifouling agent.

here,
"Intermittently" means that the supply state and the non-supply state are switched every predetermined time. The predetermined time may be variable depending on conditions other than a fixed time.

(3-2) Details of Configuration of Spray Unit The spray unit 101 is composed of electromagnetic valves 104 a and 104 b and a plurality of spray nozzles 105 .

Electromagnetic valves 104a and 104b are located between the chemical pressurized tank 102 and the spray nozzle 105, and by opening and closing the valves, the antifouling agent is delivered to the spray nozzle 105 or blocked. The opening and closing of the electromagnetic valves 104a and 104b are controlled by the controller 103. FIG.

The spray nozzle 105 sprays the antifouling agent to the transport roller 12 of the double facer device 10 in the form of a mist.

When the electromagnetic valve 104a or 104b is opened, the spray nozzle 105 mixes the anti-fouling agent sent from the chemical pressurized tank 102 with compressed air (not shown) to atomize and atomize the agent and eject it. to disperse. A plurality of spray nozzles 105 are installed in the longitudinal direction of the conveying roller 12, that is, in the width direction of the liner.

Solenoid valves 104a and 104b connect to these multiple spray nozzles 105, as shown in FIG. The solenoid valve 104a is exclusively connected to the spray nozzle 105 closer to the center of the transport roller 12 to accommodate standard width liners. On the other hand, the solenoid valve 104b is connected only to the spray nozzles near both ends in order to accommodate the widest liner.

That is, the solenoid valves 104a and 104b are used in combination of opening and closing in accordance with the width of the liner during operation. For example, when a maximum width liner is conveyed, the solenoid valves 104a and 104b are used to open and close the valves, and when a standard width liner is conveyed, the solenoid valve 104a is used to open and close the valves. The electronic valve 104b is always closed.

2, the electromagnetic valve 104a may be connected only to the spray nozzles 105 near the center, and the electromagnetic valve 104b may be connected to all the spray nozzles.

A configuration may be adopted in which the electromagnetic valve 104 is connected to each spray nozzle 105 so as to correspond to the plurality of spray nozzles 105 on a one-to-one basis. By controlling each solenoid valve 104 independently, it is possible to arbitrarily change not only the size of the width but also the spraying area. For example, it is also possible to spray only the end regions of the transport roller 12 so as to correspond to the widthwise ends of the liner.

In addition, the spray unit 101 sprays to the conveying roller 12, but is not limited to the conveying roller 12, and may spray to other rollers, rolls, or belt-structured machines that come into contact with the liner L. FIG.
It may also be applied to a machine that indirectly contacts the liner, for example via a plurality of rolls.
Alternatively, it may be sprayed directly onto the liner L or hot plate 13 .

(3-3) Details of Control Unit Specifically, the control unit 103 controls the spray unit 101 by sending electrical signals to the electromagnetic valves 104a and 104b.

The control unit 103 sends out a valve opening instruction, which is an electrical signal instructing the solenoid valves 104a and 104b to open. Further, the control unit 103 sends out a valve closing instruction, which is an electrical signal instructing the solenoid valves 104a and 104b to close. By combining the valve open instruction and the valve close instruction, the control unit 103 controls the supply unit to intermittently supply the antifouling agent.

The point of intermittently supplying the antifouling agent will be described later in the description of the operation of the antifouling agent supply device in (3-4).

The control unit 103 controls the spray unit 101 so as to change the area in which the antifouling agent is sprayed onto the conveying roller 12 according to the width of the liner L, which is the length of the liner L in the direction perpendicular to the traveling direction. .

For example, when the maximum width liner L is conveyed, the control unit 103 controls the electromagnetic valves 104a and 104b to open and close. As a result, in the example of FIG. 2, all the spray nozzles 105 can be used to spray over a wide area.

On the other hand, when the standard width liner L is transported, the control unit 103 controls the electromagnetic valve 104a to open and close, and the electromagnetic valve 104b to always close. In the example of FIG. 2, four spray nozzles 105 are used for spraying, and the spraying area can be limited.

(3-4) Description of Operation of Antifouling Agent Supply Device Operation of the antifouling agent supply device 100 according to the first embodiment of the present invention will be described with reference to FIG.

The controller 103 of the antifouling agent supplying device 100 performs initial setting (S10).

In the initial setting, a solenoid valve to be controlled to open and close for intermittently supplying the antifouling agent is determined.
For example, a width detection unit (not shown) of the liner L detects whether the width of the liner L is the maximum width or the standard width. If the width of the liner L is the maximum width, the solenoid valves 104a and 104b are used, and if the width of the liner L is the standard width, the solenoid valve 104a is used.
Instead of the automatic determination by the liner L width detection unit, the operator may determine the electromagnetic valve to be used and give an instruction to the control unit 103 .

In the following description, the operation will be described assuming that the solenoid valve 104a is used as the solenoid valve for opening/closing control. Therefore, since the electromagnetic valve 104b is not used for opening/closing control, the control unit 103 always transmits a valve closing instruction to the electromagnetic valve 104b in the following steps.

Also, in the initial setting, the spraying time t1 and the spraying stop time t2 are set.
The spraying time t1 is the time during which the solenoid valve is opened and the antifouling agent is sprayed. The spraying pause time t2 is the time when the electromagnetic valve is closed and the spraying of the antifouling agent is paused. As will be described later, the spraying time t1 is set to be shorter than the spraying pause time t2.

The control unit 103 transmits a valve opening instruction to the solenoid valve 104a during the spraying time t1 (S11).

While the solenoid valve 104a is open, the antifouling agent is supplied from the chemical pressure tank 102 to each spray nozzle 105. As shown in FIG. Each spray nozzle 105 mixes the antifouling agent with compressed air (not shown) and sprays it onto the conveying roller 12 . The sprayed antifouling agent adheres to the surface of the conveying roller 12 .

The transport roller 12 rotates to transport the liner L, and transfers the antifouling agent to the surface of the liner L while rotating. After that, the liner L conveyed to the hot plate 13 moves on the hot plate 13 to transfer the antifouling agent to the surface of the hot plate 13 and spread it thinly to adhere it.

As a result, the antifouling agent coats the surface of the hot plate 13 to form a film. The coating of the antifouling agent prevents the adhesion of fouling.

After the spraying time t1 has elapsed, the process proceeds to S12.

The control unit 103 transmits an instruction to close the solenoid valve 104a during the spraying pause time t2 (S12).

While the electromagnetic valve 104a is closed, the antifouling agent is not supplied from the chemical pressure tank 102 to each spray nozzle 105, and the antifouling agent is not sprayed.

During S12, the phenomenon that the antifouling agent remaining on the transport roller 12 adheres to the liner L and the antifouling agent remaining on the liner L adheres to and transfers to the hot plate 13 continues.

A part of the antifouling agent adhering to the hot plate 13 is rubbed into the surface of the hot plate 13 .
In addition, part of the antifouling agent adhering to the hot plate 13 moves on the hot plate 13 of the liner L, spreads to other locations on the hot plate 13, and re-adheres.
As a result, the antifouling agent adheres to a wide area of the hot plate 13 .

Here, the anti-fouling agent of the present embodiment can maintain the anti-fouling effect for a relatively long period of time.
Therefore, the antifouling agent attached to the hot plate 13 over a wide area as described above prevents the hot plate 13 from adhering to fouling even during S12 when the antifouling agent is not sprayed from the spray nozzles 105 .

Further, the control unit 103 may instruct the spray unit 101 as a supply unit such that the time during which the antifouling agent is supplied is shorter than the time during which the antifouling agent is not supplied. good.

Specifically, the spraying time t1 may be much shorter than the spraying pause time t2. This is because the antifouling effect lasts for a long time. These times may vary depending on the component amount of the antifouling agent and the amount of application, but for example, the application time t1 may be several seconds and the application pause time t2 may be several minutes.

After the spraying pause time t2 has elapsed, the process proceeds to S13.

It is determined whether a stop instruction has been given to the control unit 103 from the outside (S13).

If there is a stop instruction, the supply of the antifouling agent is terminated, and if there is no stop instruction, the process returns to step 11 and steps 11 and 12 are repeated.
That is, intermittent spraying of the antifouling agent is repeated.

(3-5) Effect When the anti-fouling agent of the present embodiment is intermittently sprayed by the anti-fouling agent supply device of the present embodiment, compared to the case of constantly spraying using the conventional anti-fouling agent , the amount used was reduced to one-half to one-third.

(3-6) Summary With the configuration and operation of the antifouling agent supply device described above, the excellent effect of the antifouling agent of the present embodiment can be utilized.

In other words, by spraying the anti-fouling agent for a short period of time and intermittently spraying it for a long period of time without spraying, the amount of the anti-fouling agent supplied can be adjusted to an appropriate amount, neither too much nor too little, so the anti-fouling effect can be maintained. However, the amount of antifouling agent to be supplied can be reduced. This also minimizes the amount of antifouling agent and reduces costs.

In addition, maintenance and inspection of the antifouling agent supply device, such as replenishment of antifouling agent, and inspection of machines in the papermaking process, such as conveying rollers, are performed during the stoppage time of antifouling agent supply in the antifouling agent supply device. be able to.

(4) Application Examples The antifouling agent and antifouling agent supply device of the present embodiment can be applied as still another embodiment.

<Application to prevent adhesion of dirt on single facer device>
The antifouling agent and antifouling agent supply device of the present embodiment can be applied not only to the double facer device 10 but also to other devices of corrugating machines. For example, it may be used to prevent dirt adhesion during gluing of a single facer device.

<Application to the prevention of dirt adhesion in the papermaking process>
The antifouling agent of this embodiment can also be applied to the papermaking process.
Prevents stains such as paper strength agents added to give strength to paper products, adhesives mixed in paper raw materials, and pitches of synthetic resins from adhering to manufacturing equipment and paper in the papermaking process. be able to.

<Anti-fouling agent containing butyl stearate and non-silicone oil>
In addition, the antifouling agent derived from the present invention and used in the papermaking process may be an antifouling agent containing butyl stearate, water, a non-silicone oil, and a surfactant.

Butyl stearate, which has properties such as transferability, spreadability and lubricity, is compatible not only with esters of ricinoleic acid and glycerin or castor oil, but also with other fats and oils. Especially when used together with a non-silicone oil, it is suitable as an antifouling agent for use in the papermaking process.

The non-silicone oil is not particularly limited as long as it is not silicone oil, and examples thereof include mineral oil, vegetable oil, and synthetic oil.

The antifouling agent and antifouling agent supply device of the present invention have been described as being applicable to the prevention of fouling adhesion in the double facer process of a corrugating machine. , wire, drying roll, reel, coating, calender, etc. in the papermaking process.

REFERENCE SIGNS LIST 10 double facer device 11 gluing unit 12 conveying roller 13 hot plate 14 belt conveyor 100 antifouling agent supply device 101 spray unit 102 chemical pressure tank 103 control unit 104a 104b solenoid valve 105 spray nozzle

Claims (13)

A stain adhesion preventive agent used in the papermaking process,
containing water and a surfactant,
The antifouling agent further contains butyl stearate,
Antifouling agent. The antifouling agent is
Furthermore, containing non-silicone oil,
The antifouling agent according to claim 1. The antifouling agent is
Furthermore, containing a low-melting wax,
The antifouling agent according to claim 1. The antifouling agent is
In addition to the butyl stearate, containing butyl palmitate,
The antifouling agent according to claim 1. The content of the butyl stearate is 0.05% by weight or more and 0.5% by weight or less,
The antifouling agent according to claim 1. A stain adhesion preventive agent used in the papermaking process,
containing water and a surfactant,
The antifouling agent further contains butyl palmitate,
Antifouling agent. The papermaking process is a corrugated cardboard sheet manufacturing process using a corrugating machine,
The antifouling agent according to any one of claims 1 to 6. An antifouling agent supply device for supplying the antifouling agent according to any one of claims 1 to 7,
a supply unit that supplies the antifouling agent to a paper manufacturing apparatus used in the paper manufacturing process or a paper sheet used in the paper manufacturing process;
a control unit that controls the supply unit to intermittently supply the antifouling agent;
Antifouling agent supply device. The control unit controls the supply unit such that the time for supplying the antifouling agent is shorter than the time for not supplying the antifouling agent.
The antifouling agent supply device according to claim 8. The papermaking process is a corrugated cardboard sheet manufacturing process using a corrugating machine,
The paper manufacturing apparatus is a double facer apparatus that applies glue to a single-faced corrugated board sheet or a liner, and laminates the liner to the single-faced corrugated board sheet on a hot plate to manufacture a double-faced corrugated board sheet,
The supply unit is located in a process on the front side of the hot plate of the double facer device, or located in a process before the double facer device,
The antifouling agent supply device according to claim 8. The papermaking process is a corrugated cardboard sheet manufacturing process using a corrugating machine,
The paper manufacturing apparatus is a double facer apparatus that applies glue to a single-faced corrugated board sheet or a liner, and laminates the liner to the single-faced corrugated board sheet on a hot plate to manufacture a double-faced corrugated board sheet,
The supply unit supplies the antifouling agent to the hot plate that heats the single-faced corrugated cardboard sheet and the liner in a state in which they are bonded together.
The antifouling agent supply device according to claim 8. The supply unit is a spray unit provided with a spray nozzle for spraying the antifouling agent,
The antifouling agent supply device according to claim 10 or 11. The control unit controls the spray unit so as to change the area where the antifouling agent is sprayed according to the width of the liner.
The antifouling agent supply device according to claim 12.

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