JP3382352B2 - Method and apparatus for producing matte paper - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing single-glossy paper and an apparatus therefor, and more particularly to a method for producing single-glossy paper using a Yankee dryer and an apparatus therefor.

[0002]

2. Description of the Related Art In recent years, as advanced printing technology has been developed, the demand for single-glossy paper, which is a target of the advanced printing technology, has further increased. The glossy paper includes foil paper having a relatively light basis weight, base paper for decorative boards, medium amount of metal interleaving paper, thin wrapping paper, and heavy-weight bag paper, and these are all printed. It is the glossy side of the single-sided glossy paper, and the appearance of the printing technology differs depending on the glossiness of this glossy surface. How much glossiness has a great influence on the quality of what is printed on a piece of glossy paper. Generally speaking,
It is said that the higher the gloss, the greater the product value. From the above, the glossiness of the glossy surface of single-glossy paper is JISP8.
More than 25% of 142 is commonly employed, and it is even more preferred to have more than 27%.

[0003] Normally, single-glossy paper is produced using a single-glossy paper manufacturing apparatus equipped with a Yankee dryer. The glossiness which is an important characteristic of single-glossy paper is mainly produced by the contact surface with the Yankee dryer. Go in. The paper (wet paper) that has been sent to the Yankee dryer after passing through the press part or the pre-dryer part of the single-glossy paper manufacturing device is strongly pressed against the surface of the Yankee dryer heated by the touch roll to stick to it. It is heated and dried, and the smoothness of the surface of the Yankee dryer is transferred to the paper as it is, so that the gloss property of the single-glossy paper appears.

From the above, the glossiness of single-glossy paper is
(1) To increase the smoothness of the Yankee dryer,
(2) To prevent the surface of the Yankee dryer from getting dirty so that the wet paper strongly sticks to it. (3) When the paper is peeled from the surface after being heated and dried by the dryer, the surface of the paper is peeled off. It can be improved by eliminating so-called picking. Therefore, as a measure for (1), oil baking should be performed regularly when the machine is stopped. As a measure for (2), a release agent such as polybutene should be sprayed on the Yankee dryer to prevent stains. As a countermeasure, it is possible to suppress the humidity of the dryer to prevent picking or to reduce the papermaking speed. However, such measures are not always sufficiently satisfactory for the following reasons.

That is, the factors that hinder the smoothness of the surface of the Yankee dryer are the mechanical abrasion of the surface due to the use of the doctor blade and the chemical dissolution damage due to the additive chemicals contained in the wet paper. It is not possible to prevent it with a certain degree. In addition, since the oil baking process needs to be performed with the Yankee dryer stopped, the operating rate is extremely low, and the oil baking process is effective immediately after the oil baking process, but it has a drawback of lacking sustainability. In addition, the factor that prevents the wet paper from sticking strongly to the surface of the Yankee dryer is the amount of pitch contained in the pulp raw material itself and the stains caused by the above-mentioned added chemicals, and the degree of application of the release agent is not sufficient. Therefore, a technique has been developed, for example, as disclosed in JP-A-5-331793, which attempts to improve the glossiness by press-contacting with a device different from the Yankee dryer.

[0006] Specifically, this technique is, after drying with a Yankee dryer, a piece of glossy paper is placed on a soft calender consisting of one metal roll and one elastic roll having a Shore D hardness of 80 to 96, This is a method for producing a single-sided glossy paper by passing the paper through at least once so that the glossy surface comes into contact with the metal roll and performing surface treatment. However, in addition to the need for an extra mechanical device for the treatment in a separate step, there is a problem that the elastic rolls are heavily worn and the cost is also high. On the other hand, a technique (spraying agent application method) of spraying a release agent such as polybutene or polyethylene wax onto the surface of a Yankee dryer has also been developed, but the dryer surface can be kept clean, but sticking to the dryer surface of the glossy paper Since the strength is weakened, the glossiness is lowered and not always sufficient results have been obtained.

[0007]

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems. That is, the object of the present invention is to produce a flat glossy paper which can easily increase the smoothness of the Yankee dryer, prevent stains, and also prevent picking, and consequently increase the glossiness of the flat glossy paper. To provide a method and a device therefor.

[0008]

The inventors of the present invention, as a result of earnest research on such a problem,
By spraying a very small amount of solid lubricant to the Yankee dryer, the smoothness on the surface can be increased, and by limiting the spray position to a specific range, the spray effect is improved more effectively. The inventors have found that they can be made, and have completed the present invention based on this finding.

That is, according to the present invention, in a method for producing a single glossy paper using a Yankee dryer device consisting of a touch roll, a Yankee dryer and a doctor, a spray is applied between the position where the paper is peeled from the Yankee dryer and the touch roll. By spraying a solid lubricant on the dryer surface by means,
It lies in a method for producing a single-sided glossy paper that smoothes the surface of a dryer.

In a method for producing a single-glossy paper using a Yankee dryer device comprising a touch roll, a Yankee dryer, and a doctor, between the position where the paper is peeled from the Yankee dryer and the touch roll and between the two doctor knives. At the surface of the dryer by spraying means
A solid lubricant is sprinkled onto the surface of the drier to smooth the surface of the drier.

Also, the solid lubricant Yankee Dry
The amount of spraying on the surface of the yarn is 0.3 to 4.2 mg / m ^2.
It exists in the method for producing single-sided glossy paper .

And again, touch roll, Yankee Dora
In Yankee dryer device consisting of ear, doctor
The position where the paper peels off from the Yankee dryer.
Disperse solid lubricant on the surface of the dryer between tyrol
A spraying device is installed to reciprocate in the width direction of the glossy paper.
A moving spraying nozzle and a limiter for detecting the glossy paper width.
The function to smooth the surface of the dryer equipped with a switch
It exists in the Yankee dryer device that it has .

And again, touch roll, Yankee Dora
In Yankee dryer device consisting of ear, doctor
The position where the paper peels off from the Yankee dryer.
The dryer between the tyrol and between the two doctors
-Providing a spraying device for spraying solid lubricant on the surface,
The spray nozzle and the glossy paper that the device reciprocates in the width direction of the glossy paper.
Dryer with limit switch for width detection
-Yankee dryer device with the function of smoothing the surface
There is a place.

[0014]

[Function] By spraying a small amount of the solid lubricant to the Yankee dryer, the solid lubricant is efficiently embedded in the fine irregularities of the surface to smooth the surface, and the surface in which a minute amount of the lubricant is embedded. Since it is constantly replenished on top and kept covered, dirt can be eliminated. Also, by spraying between the doctor knives, the sprayed droplets are not disturbed by the air flow, and efficient spraying can be performed.

[0015]

The present invention will be described below with reference to the accompanying drawings showing examples. FIG. 1 is a view showing a Yankee dryer device with a pre-dryer, which is one of the single-glossy paper manufacturing devices. The Yankee dryer device with a pre-dryer usually comprises a wire part A, a press part B, a pre-dryer part C, a Yankee dryer part D and a reel part E, as shown in the figure. The wire part A is a head box A1 containing a flowable pulp, and a Fourdrinier wire A2 that carries the pulp discharged in a film form from the head box A1 to the press part while dropping moisture from the meshes.
Equipped with.

Long wire A from inside the head box A1
The pulp supplied onto 2 is dehydrated to some extent while being placed on the Fourdrinier wire A2 and moved, and is formed into a thin wet paper web containing a small amount of water. Fourdrinier wire A
After leaving 2, the sheet moves to the first press felt B1 of the next press part B and is fed while being stuck. The press part B is arranged via a first press roll B2 arranged via a first press felt B1, a second press roll B4 arranged via a second press felt B3, and a third press felt B5. A third press roll B6 is provided.

The material of each press felt is made of a material that absorbs moisture well, for example, wool or a blended product with synthetic fiber, and each press roll presses a paper stuck on each press felt, The felt has a function of permeating and absorbing water to remove it. That is, the wet paper containing relatively moisture, which has exited the Fourdrinier wire A2 and is sent to the press part B, is attached to the first press felt B1 and moved, and pressed from both sides between the first press rolls B2. .

Then, similar pressure welding is performed between the second press rolls and between the third press rolls one after another, and excess water is almost eliminated. After passing the last third press roll B6, it is moved to the first paper dryer C1 of the next pre-dryer part C. Pre-dryer part C
Are six paper dryers C from the first to the sixth.
1, C2, C3, C4, C5, C6 are alternately arranged vertically in order, and each paper dryer has a heat source inside and is heated to an appropriate temperature (usually 50 to 60 ° C.). .

The first paper dryer C1 and the third
Paper dryer C3 and fifth paper dryer C5
An upper canvas C7 is arranged so as to come into pressure contact with the upper part of the second paper drier C2, the fourth paper drier C4 and the sixth paper drier C6.
The lower canvas C8 is arranged so as to come into pressure contact from below. The canvas material is made of a relatively thin and strong cloth (for example, cotton or plastic canvas made of plastic), and the canvas is strongly pressed against the dryer with a wet paper sandwiched between the canvas and the heat of the dryer. It evaporates and disperses water contained in paper.

The pre-dryer part C is intended to speed up the papermaking speed by reducing the drying load of the Yankee dryer D1 in the next step. In the so-called preliminary drying before the moisture drying by the Yankee dryer D1 is performed. There is a single glossy paper manufacturing apparatus in which the pre-dryer part is omitted. The paper discharged from the last sixth paper dryer C6 of the pre-dryer part C moves while sticking to the touch felt D2 of the next Yankee dryer part D. The Yankee dryer part D includes a Yankee dryer D1, a touch felt D2, a touch roll D3, a doctor D4, an auxiliary roll D5, and the like. The Yankee dryer D1 has a heat source inside and is heated to an appropriate temperature, but the heating temperature varies slightly depending on the basis weight of the glossy paper and the papermaking speed, and is usually heated to 110 to 120 ° C. at the surface temperature. ing.

After the paper is attached to the touch felt D2,
Immediately, the Yankee dryer D1 and the touch roll D3 are strongly pressed against each other and rotate while sticking to the surface of the Yankee dryer D1. Then, the paper moves with the rotation of the Yankee dryer D1, and the touch roll D3.
At a point moved about 270 degrees from the position of, the reel drum E1 is peeled off from the dryer surface by the winding force of the reel drum E1. Here, the paper surface stuck to the dryer surface is formed into a glossy shape, and the glossiness is improved as the dryer surface is smoother and closer to the mirror surface. Therefore, the solid lubricant is sprayed on the surface of the dryer by using a spraying device described later.

By the way, when the paper is peeled off from the surface of the Yankee dryer, it is not always completely peeled off.
There may be a small amount of residue such as paper dust remaining fixed on the surface of the Yankee dryer, and various components contained in the paper may stick to the surface due to the moist heat effect. The doctor D4 is for physically removing the above-mentioned deposits, and is provided in the range between the position where the paper is peeled from the dryer surface and the touch roll D3, and the tip of the doctor D4 is Press firmly against the dryer surface to remove the deposits.

The doctors are usually several, preferably two to three, and are arranged in parallel at regular intervals, and by continuously scraping them while pressing them against the surface of the dryer, the deposits on the surface can be removed. To be removed more strictly. A spraying device S is disposed between the position where the paper leaves the Yankee dryer D1 and the touch roll D3, and sprays the solid lubricant onto the surface of the dryer. The paper that has left the Yankee dryer D1 is formed into a glossy shape with one side of which is glossy as if the surface of the dryer had been transferred.
It is wound by the reel drum E1 via the auxiliary roll E2.

FIG. 2 is an enlarged view of the Yankee dryer part in FIG. Two doctors D4 are provided side by side in the section (L) between the position where the paper leaves the Yankee dryer and the touch roll, and a spraying device S is arranged between these doctors, and the spraying nozzles are used to dry the dryer. Spray solid lubricant onto the surface of the.

FIG. 3 shows an outline of the spraying device. The spraying device S is attached to an unillustrated outer frame of the Yankee dryer device, another frame, or the like, and mainly includes a spraying nozzle 10, a moving belt 11, a motor M of a drive source thereof, and the like. A moving belt 11 is stretched between two rollers, and the moving belt 11 has a base portion 10 of a spraying nozzle.
B is fixed.

One of the two pulling rollers tensioning the moving belt 11 is rotationally driven by the motor M, while the other pulling roller 12 is pulled outward so as to follow and rotate accordingly. It is provided in the state. The tension of the moving belt 11 can be freely selected by the adjusting screw 13. In the spray nozzle 10, the solid lubricant sent from the chemical liquid tank (not shown) via the chemical liquid pipe 10D is placed on the air sent from the air tank (not shown) via the air pipe 10C, and sprayed in a spray form. It is sprayed from the nozzle tip 10A.

The spray nozzle reciprocates in the width direction of the Yankee dryer and continuously sprays minute droplets of the solid lubricant toward the surface of the Yankee dryer. The air tube, the chemical solution tube, and the like, which are directly extended from the air pipe 10C and the chemical solution pipe 10D, are bundled together and passed through the cable bear 14 which is a flexible case to an air tank, a chemical solution tank, and a control unit (not shown). It is connected. Limit switches 16L and 16R are provided on the left and right sides of the frame body 15 of the spraying device S. These limit switches detect the edge of the glossy paper and secure a spraying movement width corresponding to the width of the glossy paper. can do.

Thus, the spraying device sprays a very small amount of the solid lubricant on the surface of the Yankee dryer. The method of controlling the spraying device is not the essence of the present invention and will not be described here. On the other hand, regarding the suitable droplet size of the solid lubricant to be sprayed, as a result of an experiment from a so-called mist of about 2-3 microns close to a mist to a droplet of about 100 microns, It was found that mist of about 3 μm diffused and did not adhere to the surface of the Yankee dryer, but rather contaminates the surrounding atmosphere.

It has been found that a material having a thickness of about 30 to 50 μm can be applied thinly and uniformly on the surface of the Yankee dryer surface.
For this reason, in the present invention, droplets of about 30 to 50 microns are dispersed. By the way, regarding the spray amount of the solid lubricant, it is necessary to spray it on the surface of the Yankee dryer very little by little, but the spray amount is 0.3 to 4.2 mg / m ^2, which is the Yankee dryer. It acts extremely effectively on the surface and can make the surface smooth to improve the glossiness of the paper surface, and more preferably 1 to 3.2 mg / m ² .

If it is less than 0.3 mg / m ² , the dryer surface becomes dirty and streaks are generated on the glossy paper surface.
If it exceeds / m ² , the surface of the single-glossy paper is peeled off, many streaks are generated on the surface of the single-glossy paper, and the glossiness is lower than that before the application. However, the above-mentioned spraying amount is very small, and the diameter of the droplets of the solid lubricant is about 30 to 50 μm (the particles of the solid lubricant is about 3 to 10 μm) as described above. The trajectory of droplets is easily disturbed.

Because the heated dryer rotates, a main air flow is generated around the dryer in the rotating direction of the dryer, which is a complicated turbulent flow. . The trajectory of the solid lubricant droplets is disturbed by the above-mentioned air flow, etc., but when a spraying device is placed between two doctor knives, the flow is blocked by the doctor knives, so the dryer rotation It was found that the influence of the air flow due to is extremely small, and it can be sprayed accurately and efficiently on the surface of the Yankee dryer.

In particular, in the case of the spraying apparatus of the present invention, there is an advantage that it can be easily dealt with by only moving the spraying nozzle so that it faces the doctor knife. Immediately after the solid lubricant is sprayed on the dryer surface, it is further pressed and rubbed by the doctor knife, so that the solid lubricant can enter the fine irregularities of the fine surface. When the spraying device is installed in front of the first doctor knife, the sprayed solid lubricant is repeatedly subjected to the rubbing action of the two doctor knives, so that it is possible to more reliably enter the fine irregularities on the surface. it can.

As the solid lubricant to be sprayed, molybdenum disulfide, tungsten disulfide, graphite, which are inorganic compounds,
There are barium oxide, zinc oxide, boron nitride, and the like, and organic compounds such as melamine cyanurate and polytetrafluoroethylene. The conditions for the solid lubricant usable in the present invention are at least (1) white color ( It is preferable to satisfy the conditions such as 2) having a lubricating effect, (3) having heat resistance, and (4) having hydrophilicity.

Therefore, as a preferable solid lubricant used in the present invention, that is, a solid lubricant capable of improving the glossiness of the glossy paper, melamine and isocyanuric acid in the same weight are added to the MCA ( Melamine cyanurate)
And PTFC (polytetrafluoroethylene) are selected. The former method for producing MCA (melamine cyanurate) is clear from JP-A-55-31811. That is, (1) a method in which an aqueous solution of melamine and an aqueous solution of cyanuric acid are mixed, and (2) one or both of melamine and cyanuric acid are dispersed in water in a solid phase state to react them with each other. Is possible. The solid lubricant uses water as a carrier, and if a binder is appropriately added, the lubricity is remarkably improved.

FIG. 4A shows a conventional example (release agent coating method).
The state of the Yankee dryer when the release agent (polybutene is used here) is applied to the surface,
It is the figure which showed typically the cross section seen in the micrograph. FIG. 4B is a diagram schematically showing a state of the surface of the Yankee dryer of the present invention when a solid lubricant (here, MCA is used) is sprayed.
In (a), a thin release agent is applied with some unevenness on the surface, whereas in (b), the surface irregularities are completely filled and the solid lubricant is filled and smoothed. I understand. Therefore, from a microscopic viewpoint, the release agent cannot smooth the surface of the Yankee dryer,
It can be seen that the solid lubricant makes it possible and has an excellent smoothing effect on the surface of the Yankee dryer. Next, examples of experiments using a solid lubricant and a peeling agent are shown.

[Experimental Example 1] Solid lubricant (PTFE 50
A mixture of 50% by weight of MCA and 50% by weight of MCA) is sprayed evenly on the surface of the Yankee dryer from the nozzle of the spraying device from between two doctors. ) ”And“ glossiness (GLOSSMT
ER. GM-26D Murakami Color Research Laboratory "was measured. The glossiness was measured by JISP8142. The plain glossy paper has a basis weight of 100 g / m ² , and the surface speed of the Yankee dryer (corresponding to the paper speed) is 200 m / min.
Spray rate 0cc / min, 0.5cc / min, 1cc / min, 2
Six cases of cc / minute, 3 cc / minute, and 4 cc / minute were used. Results are shown in FIG.

[Experimental Example 2] A release agent (polyethyleneimine) was evenly sprayed from between two doctors on the surface of a Yankee dryer from a nozzle of a spraying device. At that time, "sensory evaluation (paper surface "Stroke state)" and "glossiness (GLOSSMTER. GM-26D, manufactured by Murakami Color Research Laboratory Co., Ltd.") were measured.
42. One-sided glossy paper has a basis weight of 100 g / m ^2.
The surface speed of the Yankee dryer (corresponding to the paper speed) is 200 m / min, and the spray rate is 0 cc / min, 0.1 cc / min.
Min, 0.5 cc / min, 1 cc / min, 2 cc / min, 3 cc
/ Minute, 6 cases. Results are shown in FIG.

[Experimental Example 3] A solid lubricant (MCA) was sprayed evenly on the surface of a Yankee dryer from the nozzle of a spraying device from between two doctors. Muscle condition) "and" glossiness (GL
OSSMTER. GM-26D Murakami Color Research Laboratory "was measured. The glossiness was measured according to JIS P8142. The plain glossy paper has a weight of 100 g / m ²
The surface speed of Yankee dryer (corresponding to paper speed) is 20
The application rate was 0 m / min, and the application rate was 2 cc / min. Further, the kind of solid lubricant was changed in the same manner as the above experiment (the solid lubricants were PTFE, boron nitride, and mica, respectively). The results are shown in Fig. 7.

[Experimental Example 4] A stripping agent (polybutene) was sprayed evenly on the surface of a Yankee dryer from the nozzle of a spraying device from between two doctors. Condition) "and" glossiness (GL
OSSMTER. GM-26D Murakami Color Research Laboratory) ”was measured. The glossiness was measured according to JIS P8142. One-sided glossy paper has a basis weight of 100 g / m ^2.
The surface speed of the Yankee dryer (corresponding to the paper speed) was 200 m / min, and the spray rate was 2 cc / min. Further, as in the above experiment, the type of the release agent was changed (the release agent was polyethyleneimine). The results are shown in Fig. 8.

Although the present invention has been described above, it is needless to say that the present invention is not limited to the embodiments and various other modifications can be made without departing from the essence thereof. For example, in the embodiment, two doctors were used, but the number may be more.
Further, as the spraying means, it is possible to sufficiently employ a spraying nozzle having a fixed length corresponding to the width of the single glossy paper, in addition to the type of nozzle that moves in the widthwise direction of the single glossy paper. On the other hand, in the example, the range where the point where the glossy paper is peeled off from the Yankee dryer and the touch roll is about 90 degrees has been described, but the range is not limited to this angle.

[0041]

The surface of the Yankee dryer can be made smooth, and as a result, the glossiness of the single-glossy paper can be improved. Further, the solid lubricant can be efficiently dispersed.

[Brief description of drawings]

FIG. 1 is a schematic view showing an apparatus for producing a single piece glossy paper which is an embodiment of the present invention.

FIG. 2 is a schematic view showing a Yankee dryer device.

FIG. 3 is a schematic view showing a spraying device.

FIG. 4 is an enlarged schematic view of the surface of a Yankee dryer. (A) is a figure which shows the surface state at the time of spraying a release agent. (B) is a figure which shows the surface state at the time of spraying a solid lubricant.

FIG. 5 is a diagram showing the results when the amount of the solid lubricant sprayed in Experimental Example 1 was changed.

FIG. 6 is a diagram showing the results when the amount of the release agent sprayed in Experimental Example 2 was changed.

FIG. 7 is a diagram showing the results when different kinds of solid lubricants are sprayed.

FIG. 8 is a diagram showing the results when spraying is performed by changing the type of release agent.

[Explanation of symbols]

A wire part A1 head box A2 long wire B Press part B1 1st press felt B2 1st press roll B3 2nd press felt B4 2nd press roll B5 Third Press Felt B6 3rd press roll C pre-dryer part C1 first paper dryer C2 second paper dryer C3 Third Paper Dryer C4 Fourth Paper Dryer C5 Fifth Paper Dryer C6 6th paper dryer C7 upper canvas C8 lower canvas D Yankee dryer part D1 Yankee dryer D2 touch felt D3 touch roll D4 doctor knife D5 auxiliary roll E reel part E1 reel drum E2 auxiliary roll K glossy paper M motor S spraying device 10 spray nozzles 10A tip of spray nozzle 10B spray nozzle base 10C air pipe 10D medicated pipe 11 moving belt 12 Pull roller 13 Adjustment screw 14 Cable Bear 15 frame 16L left limit switch 16R Right limit switch

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Kato 1 Oji-machi, Kasugai-shi, Aichi Shin-Oji Paper Co., Ltd. Kasugai Mill (56) References JP-A-59-88992 (JP, A) JP-A-SHO 52-74005 (JP, A) JP-A-62-215090 (JP, A) JP-B-38-12361 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) D21F 5/00 -5/20 D21H 11/00-27/42

Claims (5)

(57) [Claims] 1. A method for producing a glossy paper using a Yankee dryer device comprising a touch roll, a Yankee dryer and a doctor, wherein the dryer is provided by a spraying means between a position where the paper is peeled from the Yankee dryer and the touch roll. A method for producing single-sided glossy paper, which comprises spraying a solid lubricant on the surface and smoothing the surface of the dryer. 2. A method for producing a single-sided glossy paper using a Yankee dryer device comprising a touch roll, a Yankee dryer, and a doctor, and between the position where the paper is peeled from the Yankee dryer and the touch roll and between two doctor knives. At the surface of the dryer , solids are applied by spraying means.
A method for producing a single-sided glossy paper, which comprises spraying a lubricant to smooth the surface of the dryer. 3. The method for producing a single-sided glossy paper according to claim 1, wherein the amount of the solid lubricant applied to the surface of the Yankee dryer is 0.3 to 4.2 mg / m ² . 4. Touch roll, Yankee dryer, Doc
Yankee dryer device
ー Between the position where the paper peels from the dryer and the touch roll
A spraying device for spraying a solid lubricant on the surface of the dryer in between
And the spraying device reciprocates in the width direction of the glossy paper.
A limit switch for detecting the width of the nozzle and the glossy paper
A machine for smoothing the surface of the dryer, which is characterized by having
Yankee dryer device with function. 5. Touch roll, Yankee dryer, Doc
Yankee dryer device
ー Between the position where the paper peels from the dryer and the touch roll
Solid on the dryer surface between and between two doctors
A spraying device for spraying the lubricant is provided, and the spraying device is a glossy paper.
Detects the spray nozzle that reciprocates in the width direction and the glossy paper width
Drive with a limit switch for
Yankee dryer with the function of smoothing the ear surface
-Device.