JP2820902B2 - Corrugator belt and joint part of corrugator belt using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugator belt used for a corrugator machine for producing a corrugated cardboard sheet and a joint portion of the corrugator belt using the same.

[0002]

2. Description of the Related Art As shown in FIG. 1 , a heating part (1) and a cooling part ( FIG. 1) are used to bond a single-faced corrugated cardboard coated with an adhesive and a liner paper by a glue machine to produce a corrugated cardboard sheet . In the double facer section (3) of the corrugator machine consisting of (2), a corrugator belt (4) formed by joining thick woven fabrics endlessly is arranged as a means for conveying a corrugated cardboard sheet.

[0003] Single-sided corrugated paper coated with adhesive (5)
The liner paper (6) is supplied to the double facer section (3) in a state of being pressed by the corrugator belt (4), heated by the hot plate (7), and the corrugator belt (4) and the ballast roll (8). Pressure contact with
It is dried and adhered to form a corrugated cardboard sheet (9) having a predetermined thickness. After passing through the cooling part (2), the corrugated cardboard sheet (9) is conveyed to a cutter and taken out as a product cut into a predetermined size.
The properties required of the corrugator belt (4) include a moderate weight, rigidity and thickness for maintaining the adhesion to the corrugated cardboard sheet (9) and for uniformly transmitting the pressing force transmitted from the ballast roll (8) to the sheet. And durability against heat.

As a corrugator belt (4) which can satisfy these requirements, for example, a multilayer woven cotton belt as exemplified in FIGS. 2 and 3 is frequently used. However, there has been a problem that simply making the cotton belt a multi-layer weave is too hard and generates a large noise.

Conventionally, various proposals for solving this problem have been made as follows. First, JP-A-50-71
No. 965 proposes the one shown in FIG. It has a tensile layer (intermediate layer) (10) that absorbs a tensile force made of a material that is strong and hard to stretch, and has a structure in which one or both sides of the tensile layer (10) are covered by an outer layer (11). Has been proposed. (10a) is a binding yarn. It is described that the outer layer (11) is made of a highly hygroscopic fiber material, for example, a fiber yarn mixed with a synthetic or natural cellulose fiber, particularly polyester. Significantly improved moisture retention and antistatic properties and satisfactory paper and paperboard entrainment are mentioned.

Next, JP-A-61-287607 discloses that
As shown in FIG. 5, a large-diameter monofilament yarn is used for the warp (12), a large-diameter monofilament yarn is used for the surface layer and the middle layer weft (13), and a thick bulky yarn is used for the back layer weft (14). A multi-woven fabric using twisted or aligned yarns of spun yarns has been proposed, and its effects include improvements in durability, dryness, air permeability, and smoothness of a corrugated cardboard sheet.

Japanese Patent Application Laid-Open No. Hei 5-93342 discloses an intermediate ply (FIG. 6) that absorbs a tensile force and is sandwiched between an upper ply (15) and a lower ply (16). 17), and the warp yarns (15a) to (15i)
Runs over at least two wefts (16a) on both the upper and lower sides, and in the upper and lower plies, the warps are formed as a group and are shifted from each other, and all the plies are knotted (17a) to (17d) are intertwined with each other, wherein the wefts are tied in a ply, the effect of which is to achieve an excellent silent running and thus a desired reduction in the noise level at the place of use,
They also say that their life is extended.

[0008] After the corrugator belt is hung on a corrugator machine, the belt is joined endlessly. In order to join the belt endlessly, a joint having metal hooks implanted at both ends is generally used. However, in this state, the metal hooks protrude from the belt surface, causing a mark on the sheet, and a slight step between the belt body and the joint portion causes a difference in height of the sheet, resulting in unevenness during printing. .

For this reason, various proposals for solving the above problems have been made as follows. First of all,
In Japanese Patent No. 11844, as shown in FIG. 7 , weft yarns on both free ends of the belt body (18) are pulled out, the structure is unwound, and the thin layer portions (a) and (b) are respectively laid out. It describes that this thin layer portion is connected and joined by metal hooks (19) and (20), and the joined portion is covered and adhered by a tufted warp (21) remaining by unwinding to form an endless belt.

As a result, since the joint is covered with the tufted warp, the joint does not become thicker than the belt main body, and the metal hook is embedded therein. It is described that there is no mark on the seat, the running of the belt is smooth, and the working efficiency of the corrugator machine is increased.

Next, in Japanese Utility Model Laid-Open No. 60-154643,
FIG.As shown in (A), the joining of the belt body (22)
Both ends (22 ') of the strip without metal-like joints
(22 ") is tapered off and the surface is glued (2").
3) It is stated that it is bonded and endless.
ing. Also, in that publication,FIG.
As shown in (B) and (C), the metal bonding portions are each made of silicon.
Covered with rubber (24) and cloth applied to metal joints
(25) is shown. However, both
The joint part is the same as the belt thickness, and the silicone rubber (2
4) Or the part of the patch (25) is the belt body (22)
It is thicker and its part is protruding.

Further, JP-A-2-242990 discloses that
As shown in FIG. 9 , the ends (26 ') and (26 ") of the woven body (26) of the corrugator belt having a flat weave multilayer structure are formed in a complementary step shape, and the tongue end cut into the woven body It is described to form (27) and (28) and to install a clipper seam (29) between the tongue ends.

Japanese Patent Application Laid-Open No. Hei 4-236736 discloses FIG.
As shown in FIG. 0 , U-shaped clamps (31) and (32) are fixed to each end of the conveyor belt (30), and the clamps are engaged in a hinge shape to form a hinge connection portion (33), thereby connecting the belts. The device is shown as a coupling device in which the clamp is covered with flock material (34).

As a material of the yarn used for the corrugator belt, synthetic fibers are used alone or in combination with other materials instead of cotton conventionally used for the purpose of durability against heat, dimensional stability and the like. It is being used. However, there has been a problem that the use of synthetic fiber yarns significantly charges static electricity. As a method of solving this problem, there is a method of applying an antistatic resin to the surface of the finished product at an appropriate interval. Although this method is simple, it is not sufficient depending on the conditions of use, place of use, etc.
There is also a problem that the effect is not permanent.

As a corrugator belt having a needle structure, for example, Japanese Unexamined Patent Publication No. 61-275450 discloses a needle-shaped belt in which bats (36) and (36) are needled to a base cloth (35) as shown in FIG. It shows a structure in which a bat in which metal fibers are mixed is implanted on the upper and lower surfaces of a base cloth to prevent static electricity. Furthermore, it is conceivable to use a part of the conductive fiber when weaving the corrugator belt. However, this method has a problem that the surface of the conductive fiber has a partly different surface property and the surface property is not uniform.

By the way, at present, the following characteristics are required of the corrugator belt. 1. As general characteristics, (1) durability against heat (2) smoothness for imparting sheet adhesion (3) moderate thickness for uniformly transmitting the load transmitted from the ballast roll on the side not in contact with the sheet to the sheet (4) Hygroscopicity and moisture retention for accelerating drying (5) Running property and dimensional stability for accurately conveying the sheet.

2. In use, the following effects are associated with characteristics (1) noise reduction (2) dirt is difficult to remove and easy to drop (3) can be used for a long time (4) trouble-free joint structure (5) antistatic measures There is.

For this reason, conventionally, it was sufficient to satisfy the above characteristics to some extent, but recently, it has become impossible to meet the requirements of the corrugator belt user unless all of the above characteristics are satisfied. In order to provide the characteristics required for the above-mentioned corrugator belt, the following items were examined as to the quality and performance required for the corrugator belt. As a result, it was found that it was necessary to provide the following quality and performance.

1. Thickness (1) In general, a corrugator machine is used with a belt thickness of 10 mm. (2) Generally, an increase in thickness means an increase in weight and rigidity, which is good for bonding sheets. (3) In order to obtain a thickness, a multilayer weave or a thick yarn is used. (4) For special applications, there are cases where a belt around 8.5 mm is used.・ General product is 1 as satisfying the above (1) to (4)
0 to 11 mm, and 8.5 mm is preferable for special applications.

2. Weight (1) The heavier the better, the same weight as the cotton belt or at least 90% or more is required. (2) A material having a large specific gravity and a material having a high water absorption are more preferable because they increase the weight. -In order to satisfy the above (1) and (2), generally, it is preferably 7.5 kg / m ² or more, and at least 7.0 kg / m ² or more.

3. Hygroscopicity (1) Moisture from the sheet sandwiched between the hot plate and the belt
Since there is no part that diffuses only on the belt side, it is preferable that the belt has hygroscopicity. (2) Threads such as spun yarns having a structure that easily causes a capillary phenomenon, and yarns that are hygroscopic in terms of material, such as cotton and rayon, are preferred. -From the above (1) and (2), it is preferable to use a hygroscopic yarn.

4. Low noise characteristics (1) A smooth surface (such as long crimp weave) is preferable on the back side of the belt where the ballast roll on the side not in contact with the sheet comes into contact so as to reduce the roll vibration caused by the belt. (2) A soft synthetic fiber material is preferable because the belt can be smoothly and softly bent when the belt is bent or passed through a roll or the like. The weave structure on the front and back is preferably smooth long crimp weave. -Considering the above (1) and (2), the specifications and woven structure of the synthetic fiber material are preferably long crimp weave.

5. Rigidity (1) A certain degree of rigidity is indispensable in order to uniformly transmit the force of the ballast roll on the side not in contact with the sheet to the sheet by the vertical and horizontal rigidity of the corrugator belt. (2) Compared with the cotton belt, the synthetic fiber belt is reduced to 50 to 70% due to the influence of the material. But this level requires. -From the above (1) and (2), it is preferable that the width of the cotton belt is 1/2 or more.

6. Surface properties (1) Smooth surface properties are required in consideration of sheet mark prevention and noise prevention.

[7] Antifouling property (1) When a sticking agent adheres, it is considered that cotton fiber is more easily adhered and has lower adhesion to polyester. Therefore,
At least 50% of polyester is required. (2) Weaves with a flat surface so that dirt is difficult to entangle,
For example, long crimp weave is better. -50% polyester considering the above (1) and (2)
As described above, the weave structure is preferably a long crimp weave.

8. Runnability (1) In order to avoid the problem of sheet run-out, the belt run-up on the machine is targeted to be within 5 mm.

9. Dimensional stability (1) Since it comes into contact with a hot plate at a high temperature (180 to 190 ° C), a treatment that does not cause heat shrinkage is required. (2) Weaving so that shrinkage does not occur in the length direction and the width direction. -From the above (1) and (2), it is preferable to use a yarn without heat shrinkage or use a small amount of yarn.

10. Air permeability (1) The air permeability of the existing belt is 10 to 300cc
/ Min. / Cm ² .

(11) Antistatic measures (1) Sheets with insufficient adhesion due to static electricity may adhere to the sheet due to static electricity when the temperature of the hot plate is not completely raised. Action must be taken by weaving conductive yarn or applying conductive resin. -In short, the use of conductive yarn or conductive resin is necessary.

12. Structure of joint part (1) With a synthetic fiber belt, the belt body is softer than a cotton belt. For this reason, the joint portion is not thicker than the main body portion because the thickness of the joint portion is large or local projections easily damage the sheet. (2) Since the belt body is reduced in thickness by a certain amount at a relatively early stage due to a change with time during use, it is necessary to set the thickness of the hook planting portion and the like to allow for this. (3) The back side not in contact with the sheet must have a smooth finish that does not cause ballast roll vibration. (4) It is necessary to have a type in which burrs at the foot end can be obtained so that the hook after planting does not become loose, and the tip of the hook bends around the core wire. (5) On the surface side in contact with the sheet, it is necessary to prepare two types, with a cloth or tapered finish with resin, and to be able to respond to the usage. (A) It is necessary to sew a cloth made of a material with high heat resistance to a position where physical abrasion is unlikely to occur. (B) It is necessary to apply a resin with high heat resistance in a tapered shape. -In order to satisfy the above (1) to (5), it is necessary to make the thickness less than the main body portion.

[0031]

The above-mentioned prior arts have been examined, but it has been found that none of the methods sufficiently satisfy the above-mentioned required quality and performance. Therefore, we examined how to achieve the next required quality and performance. In the examination, the contents which need to be confirmed are tested or woven, and the specifications for the quality and performance described above are established to arrive at the present invention. Regarding how to achieve the quality and performance of the corrugator belt, the items described below were examined and the specifications were established, and this point will be described.

1. Regarding the material of the yarn to be used (1) In view of the low noise characteristics described in the above item 4 and the antifouling property described in the item 7, it is desirable that the content of the polyester and the spun yarn is as large as 50% or more. (2) In view of the weight of the above item 2 and the hygroscopicity of item 3, a material having high hygroscopicity is preferable. Rayon is superior to cotton in moisture absorption. The specific gravity is 1.54 for cotton, 1.38 for polyester, and 1.50 for rayon. Cotton and rayon are almost the same and are larger than polyester. (3) Polyester is the best in terms of dry heat resistance, but rayon is better than cotton at high temperatures. (4) From the above results, it was found that a blend of polyester fiber and rayon fiber was optimal for the warp. (5) The mixing ratio of polyester fiber and rayon fiber was examined. Examining the relationship between the blending ratio and the strength characteristics, the ratio of the polyester fiber is 55%.
(%) When it becomes lower than the vicinity, the intensity suddenly decreases, and 55%.
It increases from around (%) to 65 (%). But 65
(%), It was found that even if the proportion of the polyester fiber was increased, the strength was increased only a little more. (6) In consideration of the rigidity of the item 5, the blend ratio of the polyester fiber and the rayon fiber is 65:35 to 55:
A range of 45 has been found to be appropriate. (7) Among them, it was found that a blend ratio of 65:35 made the most effective use of the characteristics of each of the polyester fiber and the rayon fiber, and was optimal as a corrugator belt.

2. Regarding the texture (1) In view of the low noise characteristics described in the above item 4, the surface property described in item 6, and the antifouling property described in item 7, it was found that the long crimped weave was suitable as the texture. (2) It has been found that it is effective to change the structure between the front side contacting the sheet and the back side not contacting the sheet in order to prevent the sheet from slipping. (3) As a result of an examination based on the above items (1) and (2), the surface side in contact with the sheet is 2 /
It has been found that the 3/1 twill weave is optimally long crimp weave on the back side where the two twill weaves are in contact with the ballast rolls not in contact with the sheet. The front side is 3/1 twill, the back side is 2/2 twill, or the front side is 1/3 twill,
The same effect can be obtained even if the back side is 3/1 twill weave.

3. Regarding the number of layers in the multilayer weaving (1) In order to obtain the thickness described in the above item 1, the weight in the item 2, the weight in the item 5, and the rigidity in the item 5, it is necessary to use a multi-layer having a large number of layers. (2) For this reason, trial weaving and the like were performed to determine whether to use a triple weave, a quadruple weave, or a six weave, and the optimal weave was examined. (3) As a result, judging from the point that the above item 1 is satisfied, the rigidity in the width direction of the belt is improved, and the load on the loom during weaving can be reduced, it is optimal to use a quadruple weave. There was found.

4. About warp density (1) As a quadruple weaving structure, test weaving and the like were performed while changing the warp density, and the appropriate warp density was examined. (2) As a result, the warp density in the case shown in Example 1 described later was 116.2 (lines / 2.54 cm). (3) With respect to Example 1, the surface properties of the above-mentioned item 6 were examined. As a result, it was found that if the warp density was 116.2 (lines / 2.54 cm), the surface properties were sufficient. It has also been found that if the warp density is further increased, there is a problem during weaving. (4) Accordingly, the warp density is 116.2 (number / 2.54
cm) was found to be sufficient.

5. Regarding the dimensional stability (1) Regarding the dimensional stability of the above item 9, since a treatment that does not cause heat shrinkage is necessary, a yarn having a low heat shrinkage is used as the yarn to be used, and the length and width during weaving are used. A weaving method that does not cause shrinkage in the direction was adopted. (3) A multifilament yarn of a polyester fiber having a low heat shrinkage was used as the yarn used for the warp intermediate layer, and strong dimensional stability was obtained. (4) Depending on the use of the corrugator belt, it was also confirmed that the heat-set yarn was used instead of a yarn having a low heat shrinkage rate. Therefore, a low heat shrinkage yarn or a heat set yarn can be used depending on the application. (5) It has also been found that the same effect can be obtained by performing heat setting after belt weaving as necessary.

6. About air permeability (1) As a result of examining the air permeability range of the existing belt,
300 cc / min. / Cm ² .
Therefore, those having an air permeability within this range are preferable. (2) As a result of conducting a trial weaving and the like, it was found that a material having an air permeability sufficiently within this range was obtained.

7. About weight and thickness (1) As for the weight and thickness, based on the above specifications 1 to 5, the examination was conducted, and if necessary, trial weaving was performed.
As for the weight, at least 7.0 kg / m ² or more,
It was found that a thickness of 8 to 11 mm was obtained. The preferred thickness is 10 to 11 mm
It is.

As a result, a corrugator belt of the present invention which satisfies all the characteristics required for the corrugator belt was obtained. If necessary, by applying a synthetic resin after weaving on only one side or both sides of the front side and the back side of the corrugator belt, the characteristics required for the corrugator belt can be improved. As a resin to be applied, for example, an acrylate resin, which is used for resin processing of a dryer canvas usually used in a dry part of a paper machine, is effective. As a method of applying the resin to the back surface (BS side) of the corrugator belt, (a) kissing,
(B) dipping, (c) roller, (d) brushing, (e) spraying, etc. are possible. In addition, the resin to be applied is not limited to the acrylate resin, and it is needless to say that any resin having the same effect can be applied.

Next, the structure of the joint of the corrugator belt will be described. Regarding Japanese Utility Model Publication No. 45-11844 described in the section of the prior art, the tufted warp remaining after unwinding is coated and adhered. There was a problem that the work was troublesome because it was necessary to arrange the parts. Also, Japanese Utility Model Application Laid-Open No. 60-154643 has a problem that the adhesive surface is adhered only with an adhesive, so that if it receives a strong force during use, it is easily peeled off and its life cannot be extended. Next, in Japanese Utility Model Laid-Open No. 2-292990, it is necessary to cut the tongue end into the woven body, and there is a problem that it is difficult to make a cut with accurate dimensions. Further, Japanese Unexamined Patent Publication No.
Since the number is covered with a flock material, a process such as heating after spraying the flock material is required.

For this reason, in the present invention, as the structure of the joint section described in the above item 12, (1) thickness less than or equal to the main body section (2) smooth finish (3) structure that is easy to bend (4) physical abrasion does not occur And other measures are required.

In consideration of the structure of the belt and the required strength, the use of a metal hook in the joint is an absolute condition. In view of this, the structure of the joint is examined.
The structure of the present invention shown below has been reached.

1. First, the shape of the metal hook to be used is as follows: (1) In the case where the tip of the conventionally used metal hook is nearly square, for example, as shown in FIG. 12 (B), the metal hook (37) is planted at the end of the belt. When the metal hook (3
7) is engaged, the core wire (38) is inserted into the common hole, and the belt (39) is made endless. However, the position where the core wire (38) is inserted easily shifts between the metal hooks.
There was a problem in inserting the core wire. As a countermeasure, as shown in FIG. 12 (A), the tip of the metal hook (40) is changed to a shape close to an arc so that the tip of the metal hook (40) follows the shape of the core wire (41), and is implanted at both ends of the belt (42). Metal hook (4
When engaging 0), the core wire (41) is easily inserted and the insertion position is not shifted.

2. As a structure of the joint portion, in order to correspond to the structure (1) and (2) of the joint portion described in the above section 12, the joint portion has a thickness sunk from the main body by a predetermined dimension h as shown in FIG . h is, for example, in the range of 0.5 to 3.0 mm.

3. In order to cope with physical abrasion during use in accordance with the structure (5) of the joint section described in the above item 12, (I) A cloth made of a material having high heat resistance is attached to the joint section. . (II) A resin having high heat resistance is applied to the joint portion in a tapered shape.

Next, countermeasures for preventing static electricity in the corrugator belt will be described. Japanese Unexamined Patent Publication No. 61-275450 described in the section of the prior art cannot be applied to a woven belt because it is a measure for a corrugator belt having a needle structure. In addition, the method of applying the antistatic resin and the method of partially using the conductive fiber are separated from the belt structure such as the material of the material used for the belt, the woven structure, and whether or not to use multiple weaves as described above. It was found that sufficient measures could not be taken.

On the other hand, there is no fundamental solution other than the above as a countermeasure against static electricity. Therefore, regarding the belt structure of the present invention, (1) a method of weaving conductive yarn, and (2) a method of applying a conductive resin. Considering the optimal countermeasures, the following method was implemented.

(1) Method of Weaving Conductive Fibers At predetermined intervals in the running direction of the belt, the warp on the back side not in contact with the sheet is replaced with a yarn obtained by winding metal fibers on a blend yarn of polyester fibers and rayon fibers. Inserted. The reason why the helical winding is used is that when twisted, the metal fiber sinks into the blended yarn of the polyester fiber and the rayon fiber and does not come out to the surface, so that the conductive effect cannot be exhibited. For this reason, in the present invention, the mixed yarn of the polyester fiber and the rayon fiber is used as a core, and the metal fiber is covered in a helical shape and is formed into a helically wound yarn so as to be exposed on the outer surface.
Further, the conductive fibers were inserted only on the back side of the side not in contact with the sheet, and were not exposed on the front side in contact with the sheet. Therefore, the surface property of the surface in contact with the sheet becomes uniform. As the metal fiber, for example, there is "Naslon" which is a stainless steel fiber manufactured by Nippon Seisen Co., Ltd. Note that the conductive fibers are not limited to metal fibers, but may be, for example, carbon fibers. In this case, as described above, it is possible to cover the mixed yarn of the polyester fiber and the rayon fiber with the helical shape by covering the carbon fiber or the like with the helical shape. However, depending on the material of the conductive fiber, it is not necessary to form the helical shape. It is also possible to replace the warp yarn on the back side which is not in contact with the sheet with a yarn obtained by twisting the conductive fiber and the conductive fiber. (2) Method of applying conductive resin Conductive resin is applied at predetermined intervals in the running direction of the belt.

[0049]

According to the present invention, a blended yarn of polyester fiber and rayon fiber is used for the front side in contact with the sheet, the back side not in contact with the sheet and the warp for binding, and the warp for the intermediate layer is used for the warp for the intermediate layer. Polyfilament multifilament yarn, polyester fiber spun yarn is used for weft, quadruple weave long crimp structure, front side in contact with sheet is 2/2 twill, back side not in contact with sheet is 3 A corrugator belt having a 3/1 twill weave or a 3/1 twill weave, a 3/1 twill weave on the front side, a 2/2 twill weave on the back side, or a 1/3 twill weave on the front side. Invention

According to a second aspect of the present invention, there is provided a corrugator belt according to a second aspect, wherein the blend ratio of the polyester fiber and the rayon fiber is 65:35 to 55:45.

The corrugator belt has a thickness of 8 to 11
mm preferably 10 to 11 mm, the weight is at least 7.0 kg / m ² or more, and the air permeability is 10 to 300 cc.
/ Min. / Cm ² corrugator belt as the third invention,

At least a corrugator belt is used in which the blended yarn of polyester fiber and rayon fiber used for the front side, the back side and the binding warp and the spun yarn of the polyester fiber used for the weft are low heat shrinkage yarns. Invention,

Using the above-mentioned corrugator belt, metal hooks are planted at both ends thereof, and metal hooks are sunk below the belt body at the joints of the corrugator belt which are engaged and joined at both ends to form an endless belt. A fifth aspect of the present invention provides a joint portion of a corrugator belt, wherein a heat-resistant cloth is attached to a belt main body on an upper surface of a metal hook implanted portion of the joint portion,

Using the above-mentioned corrugator belt, metal hooks are planted at both ends of the corrugator belt, and the metal hooks are sunk below the belt main body at the joint portion of the corrugator belt which is engaged and joined at both ends to form an endless belt. The joint part of the corrugator belt according to the sixth invention is characterized in that a heat-resistant resin is applied in a tapered shape to the mesh part of the metal hook from the belt body upper part on the metal hook implant part of the joint part. ,

According to a seventh aspect of the present invention, the corrugator belt has a corrugator belt in which a conductive resin is applied at predetermined intervals in a running direction of the belt. Inserted by replacing conductive yarn such as metal fiber, carbon fiber, etc. with a blended yarn of polyester fiber and rayon fiber, or by twisting blended yarn with conductive fiber such as metal fiber, carbon fiber, etc. An eighth aspect of the present invention relates to the corrugator belt described above.

[0056]

Embodiments of the present invention will be described below with reference to the drawings. [Embodiment 1] FIG. 13 is a sectional view in the warp direction of a corrugator belt (43) of Embodiment 1 according to the present invention. The weave is a four-layer weave. The front side warp (44) in contact with the sheet and the back side warp (45) not in contact with the sheet are a blend of tetron (trade name of polyethylene terephthalate fiber; hereinafter, referred to as T) and rayon fiber (hereinafter, referred to as R). Thread [Below (T +
R)] is obtained by twisting eight yarns of the twelfth yarn, and further three yarns. The binding warp (46) is (T
+ R) is obtained by twisting 6 yarns of the 12th yarn and further arranging 2 yarns. The intermediate layer warp (47) is obtained by twisting two 1500-denier T multifilament yarns into two yarns and further aligning the two yarns. The weft (48) is obtained by twisting 32 T-spun yarns. The front side (PS side) in contact with the sheet was a 2/2 twill weave, and the back side (BS side) in contact with a ballast roll not in contact with the sheet was a 3/1 twill weave. Each intermediate layer warp (47) is structured so as to straddle one weft (48).

The (T + R) and T yarns used in this example are yarns having a low heat shrinkage rate, and the shrinkage rate of (T + R) is 18
2.0% at 0 ° C, 3.6% at 200 ° C, and T
Was 2.1% at 180 ° C and 3.2% at 200 ° C. Note that the heat shrinkage is not limited to this value, and it is needless to say that the heat shrinkage is possible within a range in which the corrugator belt of the present invention can be realized. In addition, for the dimensional stability of the belt, the heat-shrinkable yarn is not limited to the low heat shrinkage yarn as the yarn without heat shrinkage. This is also possible. The density of the warp was 116.2 yarns / 2.54 cm, and that of the weft yarn was (6 × 4) yarns / 2.54 cm. As a result, Table 1
As shown in the figure, the thickness of the obtained corrugator belt (43) was 10.47 mm, the weight was 7,873 g / m ² , and the air permeability was 23 cc / min. / Cm ² . The vertical strength is 2148 kg / 3 cm, and the horizontal strength is 192.
It was 1 kg / 3 cm.

[0058]

[Table 1]

According to the present embodiment, regarding the required quality and performance, the thickness is 10.47 mm and the weight is 7873 k.
g / m ² , and air permeability is 23 cc / min. / Cm ² within the range considered. In the present embodiment, the PS side in contact with the sheet is described as a 2/2 twill weave, and the BS side in contact with a ballast roll not in contact with the sheet is described as a 3/1 twill weave. The same effect can be obtained with a 2/2 twill weave. In this embodiment, the case where the yarn used for the dimensional stability of the belt is a low heat shrinkage yarn or a heat set yarn has been described, but for the dimensional stability of the belt, this method is used. A similar effect can be obtained by performing heat setting after belt weaving, if necessary.

Embodiment 2 FIG. 14 is a sectional view in the warp direction of a corrugator belt (49) according to Embodiment 2 of the present invention. The weave is a four-layer weave. In this embodiment, the front side (PS side) in contact with the sheet is a 1/3 twill weave, and the back side (BS side) in contact with a ballast roll not in contact with the sheet is a 3/1 twill weave. The yarn count, total number and density used are the same as the specifications shown in Table 1 of the first embodiment. As a result, Table 1
As a result, a corrugator belt (49) similar to that of Example 1 was obtained.

Comparative Example 1 FIG. 15 is a sectional view of the corrugator belt (50) of Comparative Example 1 in the warp direction. The weave structure is a six-layer weave. The front side warp (51) in contact with the sheet is made by twisting eight yarns of cotton spun yarn and two more yarns. The back side warp (52) which is not in contact with the sheet is a spun yarn of cotton (hereinafter referred to as “C”) in which eight eighth yarns are twisted. The core yarn (53) is obtained by twisting four 250-denier T multifilament yarns, and further twisting three twisted yarns. The binding warp (54) is obtained by twisting five C-spun yarns of eight yarns, twisting two T multifilament yarns of 250 denier, and arranging two twisted yarns. . Weft (55)
Is a twisted yarn obtained by twisting 12 C-spun yarns and a twisted yarn of 10 T-spun yarns. The density was 114.9 yarns / 2.54 cm for the warp and (7 × 6) yarns / 2.54 cm for the weft.

As a result, as shown in Table 2, the thickness of the obtained corrugator belt (50) was 10.33 mm, the weight was 7747 g / m ² , and the air permeability was 10 cc / min. /
cm ² . The vertical strength is 1017kg / 3
cm, the transverse strength was 492 kg / 3 cm.

[0063]

[Table 2]

Next, in order to confirm the quality and performance of the corrugator belt (43) shown in Example 1, the following test was conducted and will be described. In addition, in order to explain the effect of Example 1 of FIG. 13, the corrugator belt (50) shown in Comparative Example 1 of FIG. 15 was similarly tested.

1. Dimensional stability when running a corrugator machine The corrugator belt shown in Example 1 and Comparative Example 1 was set on a test machine, and a running speed of 100 m / min. The test was conducted at a room temperature of 170 ° C. and a tensile tension of the belt of 3 kg / cm. Assuming the operating state of the corrugator machine, the corrugator belt was run in a cycle of about 60 minutes from a state in which the corrugator belt was wet (WET) to a state in which the corrugator belt was dried with the drying cylinder (DRY).
The dimensional behavior of the belt in the running direction (vertical direction) A and the direction perpendicular to the running direction (lateral direction) B at this time were measured, and the dimensional stability was confirmed. The test results are as shown in FIG. 16. In Comparative Example 1, the dimensional behavior in the vertical direction (A) was in the range of about 1 (%) to about 4 (%), and the dimensional behavior in the horizontal direction (B) was about 0 (%) to about -1 (%). In contrast,
In Example 1, the dimensional behavior in the vertical direction (A) is about 2.2.
(%) To 0 (%), the dimensional behavior in the horizontal direction (B) is 0 (%) to about −0.4 (%), and the vertical direction (A) and the horizontal direction (B). It can be seen that each of the dimensional behaviors of (1) and (2) is significantly smaller than that of Comparative Example 1. As a result, it can be seen that the dimensional stability of Example 1 is significantly improved as compared with Comparative Example 1.

2. Coefficient of friction The slip with the sheet and the slip between the drive belt and the drive drum of the corrugator machine are measured. As shown in FIG. 17, a sample (56) of each belt was superimposed on a corrugated cardboard sheet (55), a constant load W = 5 kg was applied, and the sample was pulled by a tensile tester via a roller (57) and started to move. The force F ₁ at the time and the force F ₂ for moving after starting to move were measured. From the respective frictional forces F ₁ and F ₂ and the load (W), the friction coefficients μ ₁ and μ ₂ were calculated by the following equations, respectively. Friction coefficient (mu) = Friction force (F) / Load (W) Thus, at this time mu ₁ is the coefficient of static friction, mu ₂ was dynamic friction coefficient. Table 3 shows the results measured by the above method.

[Table 3] Comparing with Comparative Example 1 and as in Example 1 above, the static friction coefficient mu ₁ is slightly larger toward the Comparative Example 1, the dynamic friction coefficient mu ₂ is seen that the direction of Example 1 is slightly larger. Judging from these results, it can be seen that the friction coefficient of Example 1 and Comparative Example 1 are almost the same. Therefore, it was found that there was no practical problem in Example 1.

3. Bending Softness A certain degree of bending is required for smooth and soft bending when the corrugator machine passes through a roll or the like or when the corrugator belt is bent. As shown in FIG. 18, after the treatment at 120 ° C. for 20 minutes, the sample (58) of 2 cm width × 18 cm length of each belt which was allowed to cool for 5 minutes was cantilevered, and a 50 g weight (59) was placed at the free end. Measure the amount of deflection mm when doing, according to the magnitude of the amount of deflection,
The softness was judged. That is, the smaller the amount of deflection, the higher the rigidity, and the larger the amount of deflection, the higher the flexibility.
The measurement results are as shown in Table 4,

[Table 4] The vertical direction indicates the running direction of the corrugator belt. The horizontal direction indicates the direction perpendicular to the running direction of the corrugator belt. The bending softness in the horizontal direction is almost the same as in Example 1 and Comparative Example 1. It can be seen that the bending resistance in the vertical direction is about 1.8 times greater in Example 1 than in Comparative Example 1.

Therefore, in Example 1, since the bending resistance in the vertical direction is larger than that in Comparative Example 1, it bends smoothly and softly when the corrugator machine passes through a roll or the like or when the corrugator belt bends. You can see that On the other hand, in order to uniformly transmit the force of the ballast roll on the side not in contact with the sheet to the sheet by the rigidity of the corrugator belt (43) in the vertical and horizontal directions, a certain degree of rigidity is required. In Example 1, the horizontal direction is almost the same as the cotton belt of Comparative Example 1, and the vertical direction is about 5
7 (%). However, at this level, it can be used sufficiently and there is no practical problem.

4. Noise Measurement To confirm whether or not a corrugator belt having low noise characteristics was obtained, as shown in FIG. 19, a corrugator belt (60) was hung on a currently operating corrugator machine.
Regarding the noise during the actual operation, the noise was measured by a sound level meter at four locations A, B, C, and D at different usage destinations (four companies). Table 5 shows the measurement results.

[Table 5] As a result, it can be seen that the noise value of Example 1 is lower at the minimum by 0.9 dB and the noise value at the maximum by 8.5 dB than in Comparative Example 1 at all the measurement points. Accordingly, it was found that the corrugator belt of Example 1 had lower noise than the corrugator belt of Comparative Example 1. Next, an embodiment of the joint portion of the corrugator belt of the present invention will be described.

Embodiment 3 FIG. 20 is a sectional view in the warp direction of a belt joint portion (90) of a corrugator belt (61) of Embodiment 3 according to the present invention. Metal hooks (62) and (62) are implanted at both ends of the corrugator belt (61), and the metal hooks (62) and (6)
2) and the core wire (63) is inserted into the common hole to make the belt endless. As shown in FIG. 12A , the structure of the metal hook (62) used in this case was such that the tip (62a) of the metal hook (62) had an arc shape. By using the metal hook (62) having such a structure, when the metal hooks (62) and (62) are engaged with each other, the core wire (63) can be easily inserted and the core wire (63) can be fixed. Hook (62) (62)
A joint portion (90) in which the belt (61) does not loosen easily and the belt (61) is easily bent can be obtained. As shown in FIG. 12A, the joint portion (90) was sunk by a predetermined dimension larger than the thickness of the main body of the belt (61) as shown in FIG . In the present embodiment, h = 1.7 mm.

For this reason, the thickness of the belt surface side (61 ') is smaller than that of the joint portion (90), and the joint portion does not protrude from the belt surface side (61'). The problem does not occur. Further, since the thickness of the belt (61) is reduced by a certain amount at a relatively early stage due to a temporal change during use, this problem can be solved by setting the predetermined dimension h to a dimension that allows for this.

In order to cope with physical abrasion during use, a joint cloth (65) made of a material having high heat resistance, for example, a material such as aromatic polyamide fiber or polyamide fiber is applied to the joint part (90) on the belt surface side (61 '). Then, the sewing machine is stitched at the sewing position (64). The thickness of the cloth (65) shall be such that it does not protrude from the belt surface side (61 ') on the upper surface of the metal hook (62). An example of the aromatic polyamide fiber is Technora (trademark of Teijin Limited). Further, the cloth (65) can be processed with resin to make it more resistant to abrasion.

Fourth Embodiment FIG. 21 is a cross-sectional view in the warp direction of a belt joint (67) of a corrugator belt (66) according to a fourth embodiment of the present invention. The fourth embodiment is different from the third embodiment in that the third embodiment employs a cloth on the upper surface of the metal hook of the joint portion in order to cope with physical abrasion. That is, resin is applied to the upper surface to form a resin portion (68). The resin part (68) is shown in FIG. 21 from the belt front side (69) .
As shown in the figure, the tip of the metal hook is tapered (70a).
Heat-resistant, for example, silicone resin or the like is applied to the vicinity. The resin part (68) is a metal hook tip (70
a) By setting the distance to the vicinity, the flexibility of the joint portion (67) is not deteriorated. As silicone resin to apply,
In this embodiment, a silicone adhesive (manufactured by Toray Dow Coating Silicone Co., Ltd.) was used. The structure other than the above is the same as that of the third embodiment. Next, an embodiment of a countermeasure for preventing static electricity of the corrugator belt of the present invention will be described.

Embodiment 5 FIG. 22 is a sectional view in the warp direction of a corrugator belt (71) of Embodiment 1 according to the present invention. FIG. 23 shows the corrugator belt (71) of Example 5 of FIG.
FIG. FIG. 24 shows a conductive yarn introduction portion (72
It is a figure which shows the insertion interval about the horizontal direction of the belt (71) of a). Back side warp not in contact with sheet (73)
1 repeat, FIG. 22, the next number 7,11,8,12 warp (73) shown in Figure 23, shows an example of inserting a repeat 7,11,8,12 conductive yarns (72) It is a thing. FIG. 24 shows an example of the intervals at which the conductive thread (72) is inserted one repeat. In this example, the insertion interval L ₁ is set to 20 cm, and the conductive yarn insertion portion (72a) is set to have an interval of 20 cm.

In this embodiment, the conductive yarn (72) is arranged only on the back side warp (73) not in contact with the sheet, and the conductive yarn (72) is not exposed on the surface side in contact with the sheet. It is. The specification of the conductive yarn (72) is (T + R)
This is a three-threaded yarn in which one twentieth yarn of Naslon (stainless steel made by Nippon Seisen Co., Ltd.), which is a metal fiber, is wound in a helical shape with seven twelfth yarns of the 12th core as the core.
By adopting such specifications, the metal fibers are covered in a helical shape and exposed on the outer surface to prevent static electricity.

The interval L ₁ for inserting the conductive yarn (72) is set to 20 cm in the present embodiment, but the predetermined interval is set in accordance with the running speed of the belt, the quality of the sheet, and the magnitude of the static electricity generated according to the surrounding environment. Of course, the interval can be set. In the present embodiment, stainless steel fibers have been described as metal fibers, but not limited to stainless steel fibers, a material having good conductivity, and a material having relatively high strength is good, for example, silver, nickel,
Steel, iron or their alloys or their metal compounds,
There are metal oxides and the like.

In order to show the effect of preventing static electricity according to the present embodiment, static electricity was measured as shown in FIG.

As shown in FIG. 25, assuming the operating state of the corrugator machine, the corrugator belt (77) of the first embodiment was inserted into the test machine with and without the conductive yarn of the present embodiment inserted into the test machine. Comparative Example 2 was loaded, and the running speed was 100 m / min. , Room temperature 26 ° C, humidity 92%, belt tension 3kg / cm, drying cylinder temperature 250 ° C, Shisido Electrostatic Co., Ltd.
Static electricity was measured at points (A) and (B) using a static electricity measuring device “STATILON M”. Table 6 shows the measurement results.

[0079]

[Table 6] According to the results, the value of static electricity in Example 5 was significantly reduced as compared with Comparative Example 2, indicating that the effect of the present example was obtained.

[Embodiment 6] In Embodiment 5, a case where a mixed yarn of (T + R) covered with a metal fiber in a helical shape was used as the conductive yarn was described. In the sixth embodiment, a description will be given of a case in which a carbon fiber or a yarn containing carbon fiber (hereinafter referred to as carbon fiber) is formed into a helical wound or twisted with a blended yarn of (T + R) as a conductive yarn. . The insertion intervals and arrangement method of the conductive yarns are the same as in the fifth embodiment. The specification of conductive yarn is (T + R) blended yarn 12th 7
Conductive fiber Mega III containing carbon fine particles in nylon fiber with book as core (conductive conjugate fiber manufactured by Unitika Ltd.) 20
Three yarns each of which is covered in a helical shape with one count are drawn. In this embodiment, an example in which a yarn containing carbon fibers is used has been described. However, it is equally possible to use yarns containing carbon fibers as well as yarns containing only carbon fibers. Further, in the present embodiment, the description has been made in which the conductive yarn is formed by covering the Mega III with a (T + R) blended yarn as a core and forming a helical shape. However, the present invention is not limited to this. It is not necessary to perform the process, and it is also possible to insert a yarn obtained by twisting (T + R) blended yarn with carbon fiber or the like as a conductive yarn by replacing it with a warp on the back side not in contact with the sheet.

Seventh Embodiment FIG. 26 is a view showing a seventh embodiment according to the present invention, in which a conductive resin is provided on a back side of a corrugator belt (78) according to the first embodiment of the present invention at a predetermined distance L.
_1, the L ₂ and L ₃ indicate that it has applied in the longitudinal direction of the belt (78). The portion where the conductive resin is applied is indicated by a conductive resin applied portion (78a). In this embodiment, L ₁ = L ₂ = 8c
m, L ₃ = 45 cm. In this embodiment, the conductive resin to be applied is Electrodag (manufactured by Acheson Japan Co., Ltd.).
109B, composition (weight ratio) graphite 20%, PVC 2
0% and 60% of methyl isobutyl ketone (MIBK) were used, and the mixing ratio (weight ratio) of the electrodug 109B was 1
00, 3 Araldite AW-106, Hard t-HV
3 was used for -953U. The conductive resin of this specification is applied to a corrugator belt (78) to prevent static electricity.

The interval at which the conductive resin is applied is not limited to the present embodiment, but can be set to a predetermined interval according to the magnitude of the generated static electricity according to the running speed of the belt, the quality of the sheet, the surrounding environment, and the like. Of course. In order to show the effect of preventing static electricity according to the present embodiment, a corrugator belt is hung on a corrugator machine that is actually operating, and a conductive resin application section (78a), a conductive resin application section (78a), and a next resin application section de and (78a) middle point of the interval L ₃ shown in FIG. 26 between (79a), is traveling corrugator belt (78), sheet by Shishido electrostatic, Ltd., electrostatic meter "Sutachiron M" And the side not contacting the sheet (back side). Table 7 shows the measurement results.

[0083]

[Table 7] The results show that Example 7 has an antistatic effect as compared to Comparative Example 3 in which no conductive resin was applied.

The method of applying the conductive resin includes the following (a)
Kissing, (b) dipping, (c) roller,
It is possible by (d) brush coating, (e) spraying or the like. or,
The width to be applied is about 1 to 10 mm. In this embodiment, the case where an electroduck manufactured by Acheson Japan Co., Ltd. is used as the conductive resin is shown. However, the conductive resin is not limited to this and may be any resin having the same effect.

It is needless to say that the thickness, density, etc. of the yarn described in each embodiment can be within the necessary range according to the use of the corrugator belt. As a result, the corrugator belt has a thickness of 8 to 11 mm, preferably 10 to 11 mm, and a gas permeability of 10 to 300 cc / min. / Cm ² .

[0086]

According to the present invention, a long crimped weave is used, and the front side in contact with the sheet is a 2/2 twill weave and the back side not in contact with the sheet is a 3/1 twill weave, or the front side is a 3/1 twill weave. Since the back side is a 2/2 twill weave, or the front side is a 1/3 twill weave and the back side is a 3/1 twill weave, it has a smoothness to impart sheet adhesion.

Since the yarn material used on the front side and the back side of the warp is a blended yarn of polyester fiber and rayon fiber, durability against heat, hygroscopicity for promoting drying, moisture retention and dirt hardly adhere. It has effects such as easy dropping.

Since the quadruple weave has an appropriate thickness and rigidity, the load transmitted from the ballast roll can be evenly transmitted to the sheet. Furthermore, it has running stability.

Further, according to the present invention, it is possible to reduce the noise and use the joint for a long time without any problem, and to take a structure of the joint portion and a measure for preventing static electricity. Therefore, in the corrugator belt of the present invention,
A product having quality and performance that satisfies all the characteristics required for a corrugator belt described in "Problems to be Solved by the Invention" has been realized.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a general corrugator machine.

FIG. 2 is an organization diagram of a known corrugator belt.

FIG. 3 is an organization diagram of a known corrugator belt.

FIG. 4 is an organization diagram of a known corrugator belt.

FIG. 5 is an organization diagram of a known corrugator belt.

FIG. 6 is an organization diagram of a known corrugator belt.

FIG. 7 is an explanatory view of a joint portion of a known corrugator belt.

FIG. 8 is an explanatory view of a joint portion of a known corrugated belt.

FIG. 9 is an explanatory view of a joint portion of a known corrugated belt.

FIG. 10 is an explanatory view of a joint portion of a known corrugated belt.

FIG. 11 is an explanatory view of a corrugated belt mixed with known conductive fibers.

FIG. 12 is an explanatory view of a joint portion of the corrugated belt.

FIG. 13 is an organization diagram of a corrugator belt according to the first embodiment of the present invention.

FIG. 14 is an organization diagram of a corrugator belt according to a second embodiment of the present invention.

FIG. 15 is a structural diagram of a corrugator belt according to Comparative Example 1.

FIG. 16 is a diagram showing the results of a running test in which the dimensional behavior of the corrugator belts of Example 1 and Comparative Example 1 was measured.

FIG. 17 is an explanatory diagram of a test device for a coefficient of friction.

FIG. 18 is an explanatory diagram of a bending resistance measuring device.

FIG. 19 is an explanatory diagram of noise measurement.

FIG. 20 is an explanatory diagram of a joint portion of the corrugator belt according to the third embodiment of the present invention.

FIG. 21 is an explanatory diagram of a joint portion of the corrugator belt according to the fourth embodiment of the present invention.

FIG. 22 is a cross-sectional view in the warp direction of the corrugator belt according to the first embodiment of the present invention.

FIG. 23 is a drawing of the corrugated belt according to the embodiment of FIG. 22 when the conductive yarn of the fifth embodiment is inserted, as viewed from the A side.

FIG. 24 is a view showing an insertion interval of a conductive yarn introduction portion.

FIG. 25 is an explanatory diagram of electrostatic measurement.

FIG. 26 is an explanatory diagram of a conductive resin applied state.

[Explanation of symbols]

 43 Corrugator belt 44 Front side warp in contact with sheet 45 Back side warp not in contact with sheet 46 Connection warp 47 Middle layer warp 48 Weft PS Front side in contact with PS sheet BS Back side not in contact with sheet

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Shiro Kawai 5-58 Marunouchi-cho, Omihachiman-shi, Shiga Prefecture (72) Inventor Masafumi Ishihara 95-83, Nakakomori-cho, Omihachiman-shi, Shiga Prefecture (72) Inventor Takeshi Ueyama Shiga Prefecture 2700-4 Shimotoyoura, Azuchi-cho, Gamo-gun (72) Inventor Sadao Tanaka 123, Uchino, Azuchi-cho, Gamo-gun, Shiga Prefecture (56) References JP-A-2-242990 (JP, A) JP-A 5-93342 (JP, A) JP-A-61-287607 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65G 15/34 B31F 1/36

Claims (8)

(57) [Claims] 1. A blended yarn of polyester fiber and rayon fiber for the front side in contact with the sheet, the back side which is not in contact with the sheet and the binding warp, and a multifilament yarn of polyester fiber for the intermediate layer warp; Polyester fiber yarn is used for the weft yarn and has a four-layer weave long crimp structure. The front side that contacts the sheet is 2/2 twill, and the back side that does not contact the sheet is 3/1 twill or the front side. A corrugator belt characterized in that the side is 3/1 twill, the back side is 2/2 twill, or the front side is 1/3 twill, and the back side is 3/1 twill. 2. The corrugator belt according to claim 1, wherein the mixing ratio of the polyester fiber and the rayon fiber of the blend yarn of the polyester fiber and the rayon fiber used for the warp is 65:35 to 55:45. 3. A corrugator belt having a thickness of 8 to 1
1 mm, preferably 10 to 11 mm, weight at least 7.0 kg / m ² or more, and air permeability of 10 to 300 c
c / min. ² / cm ^2.
And 2. The corrugator belt according to 2. 4. A mixed yarn of polyester fiber and rayon fiber used for at least the front side, the back side and the binding warp yarn, and a spun yarn of the polyester fiber used for the weft are low heat shrinkage yarns. Claims 1-3
The described corrugator belt. 5. A corrugator belt according to claim 1, wherein metal hooks are implanted at both ends of the corrugator belt, and the metal hooks are connected at the joints of the corrugator belt to form an endless belt by meshing and joining both ends. A joint part of a corrugator belt, wherein the joint part is submerged from the belt body and implanted, and a heat-resistant cloth is attached to the belt body on an upper surface of the metal hook implant part of the joint part. 6. A corrugator belt according to claim 1, wherein metal hooks are implanted at both ends of the corrugator belt, and both ends are meshed and joined to form an endless belt. Submerged from the belt body and planted, on the top of the metal hook planting part of the joint,
A joint portion of a corrugator belt, wherein a heat-resistant resin is applied in a tapered shape from a top surface of a belt body to a meshing portion of a metal hook. 7. The corrugator belt according to claim 1, wherein a conductive resin is applied at predetermined intervals in a running direction of the corrugator belt. 8. The corrugator belt according to claim 1, wherein the back side warp yarn is formed by winding conductive fibers such as metal fibers and carbon fibers on a blend yarn of polyester fiber and rayon fiber at predetermined intervals in the running direction of the belt. The corrugator belt according to claim 1, wherein the blended yarn and a conductive fiber such as a metal fiber and a carbon fiber are replaced by a twisted yarn and inserted.