JP2001065640A - Marked belt and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record marks at a low cost without taking man-hours and to facilitate the control of the item number or the like of a belt by forming the marks as marks with bar codes (image patterns) recorded therein, in the belt for transmission or conveyance with the marks printed on at least one face. SOLUTION: This power transmission belt comprises an extensive part 3 formed of a fiber material which is a cover canvas 5, a cushion rubber layer 9 with a conductor formed of a cord embedded therein, and a compression part 11 which is an elastic body layer on the lower side. The compression part 11 has a plurality of trapezoidal ribs 12 of approximately triangular cross section extending in a longitudinal direction. A mark material 2 with bar codes 4 recorded is transferred to the back face of such a belt. To form the mark material 2, a printing rubber composition different in color or lightness from a rubber composition 14, is printed as marks 16 and bar codes 4 on a base material 13 impregnated with the rubber composition 14, and a semi-transparent polyethylene film is laminated on the mark material 1, if necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt with a mark and a method for manufacturing the same, and more particularly, to a belt with a mark for mechanically managing the belt product number and the like and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, power transmission belts and transport belts are marked with a mark, but only numbers or symbols are printed on the back of the belt as part numbers. It was necessary to separately copy the part number attached to, or type it into the CPU.

If the above operation is carried out at the time of the inspection, there is a possibility that a trouble such as trouble other than the inspection, an error in copying the product number, an error in driving the CPU, or the like may occur.

[0004] Therefore, in order to eliminate the above-mentioned trouble and mistakes due to improper copying, a method of manufacturing a band case with a label attached with a bar code, passing a belt through the band case, and managing the product number by the bar code is proposed. Was done.

[0005]

However, when a belt is passed through the above-mentioned case, it is necessary to pass one belt at a time through the band case, and the cost of the band case and the man-hour required to pass each belt through the band case are required. Was hanging.

Further, it is necessary to attach a label with a bar code to the band case, and the man-hour and the cost of the band case and the label are separately required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been designed to cope with the situation. It does not require any man-hours, can reduce costs, and has a belt provided with a mark for mechanically managing belt number and the like, and a method of manufacturing the belt. The aim is to provide a method.

[0008]

According to a first aspect of the present invention, there is provided a belt for transmission or conveyance, wherein a mark is printed on at least one surface of the belt, and the mark is a bar code (image pattern). On the marked belt, which is the mark that records

A belt having a mark printed on at least one surface of the belt, and since the mark is a mark on which a bar code is recorded, it is possible to mechanically manage the belt part number and the like, thereby reducing costs and man-hours. Is reduced.

According to a second aspect of the present invention, there is provided a marked belt in which a mark material on which a barcode is recorded is arranged on the back surface of the belt, and at least a translucent polyethylene film is laminated on the mark material.

According to the second aspect of the present invention, by laminating at least a translucent polyethylene film on the mark material, a bar code can be read without difficulty, and the surface on which the mark is printed is always different from the other side. Even when used in contact with an object, the bar code can be read after use of the belt without the mark disappearing.

According to the third aspect of the present invention, the marked belt comprises an adhesive rubber layer having a core buried along the belt longitudinal direction and a compressed rubber layer having a plurality of rib portions extending in the circumferential direction of the belt. The marked belt according to claim 1 or 2, which is a V-ribbed belt.

According to the third aspect of the present invention, since the belt with the mark is a V-ribbed belt, a translucent polyethylene film is formed on the mark material even if the V-ribbed belt is subjected to friction by the back tension roller during running. The mark is not worn out by laminating
You can read the barcode even after using the belt,
Track and manage belt lots.

In the invention according to the fourth aspect, when printing a mark on at least one surface of the transmission or conveyance belt, a film in which a barcode is recorded by screen printing is produced, and the film is transferred. A method for manufacturing a belt with a mark for printing on the back of the belt.

According to the present invention, the film on which the bar code is recorded at the same time as the vulcanization of the belt is transferred at the same time as the vulcanization of the belt and printed on at least one surface of the belt. The transfer of the mark does not have to be performed in a separate step, which is efficient.

According to a fifth aspect of the present invention, there is provided a method for manufacturing a transmission or transport belt, comprising: a mark on which a barcode is printed in advance by screen printing on a mark base; and a base material comprising the mark and a resin film. And forming a mark material by integrating the above, after coating at least a semi-transparent polyethylene film having an end jointed to a cylindrical or cylindrical mold, the base material side of the mark material is in contact with the polyethylene film Laminating, unwrapping the unvulcanized rubber sheet on the mark material, spirally spinning the cord from above the unvulcanized rubber sheet, further unvulcanized rubber on the cord Producing a marked belt including a step of winding a sheet into a belt molded body, and a step of transferring a mark material to the back surface of the belt by vulcanizing the belt molded body. Lies in the way.

According to the fifth aspect of the present invention, a film is formed in which a mark on which a bar code is recorded is produced simultaneously with vulcanization of the belt molded body, and the above film is transferred and printed on the back surface of the belt. Since it is a method of manufacturing a belt, it is not necessary to perform film transfer and belt vulcanization in separate steps, and it is effective to laminate a film of at least translucent polyethylene on a bar-coded mark. Thus, even when the back surface of the belt travels while contacting with a conveyed object or a tension roll, the mark can be read and the part number of the belt can be read even after the use of the belt without abrasion.

In the invention according to claim 6, the marked belt comprises an adhesive rubber layer having a core buried along the belt longitudinal direction and a compressed rubber layer having a plurality of rib portions extending in the circumferential direction of the belt. A method for manufacturing a marked belt that is a V-ribbed belt.

According to the sixth aspect of the present invention, since the belt is a V-ribbed belt, a translucent polyethylene film is laminated on the mark material even if the V-ribbed belt is subjected to friction by the back tension roller during running. By doing so, the bar code can be read even after the use of the belt without abrasion of the mark, and tracking of the belt lot can be managed.

[0020]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a V-ribbed belt provided with a mark on which a barcode is printed according to an embodiment of the present invention. FIG. 2 is a perspective view of a V-ribbed belt according to another embodiment of the present invention. FIG. 3 is a perspective view of a transfer mark material on which a barcode according to the present invention is recorded, and FIG. 4 is a schematic view when the transfer mark material is transferred onto at least one surface of a belt. Further, FIG. 5 is a view showing a state before a transfer mark material is attached on a metal mold in which the respective materials are laminated and vulcanization is started.

FIG. 1 shows an example of a power transmission belt, and an extension 3 made of a fiber material, which is a cover canvas 5, is shown.
And a cushion rubber layer 9 in which a cord 7 made of a cord is embedded, and a compression portion 11 as an elastic layer below the cushion rubber layer 9. The compression section 11 has a plurality of trapezoidal ribs 12 extending in the belt longitudinal direction and having a substantially triangular cross section. And on the back of the belt, mark material 2 with bar code 4 recorded
Has been transcribed.

As shown in FIG. 4, the marking material 2 is formed by printing a rubber composition for printing having a different color or brightness from the rubber composition 14 as a mark 16 and a bar code 4 on a base material 13 impregnated with the rubber composition 14 as shown in FIG. It was done.

The base material 13 is obtained by impregnating and drying a rubber paste made of the rubber composition 14, and is made of paper or nonwoven fabric which is easily impregnated with the rubber paste. The paper used here is a natural fiber as a material, and the non-woven fabric is also made of a natural or synthetic fiber such as cotton, rayon, polyamide and polyester.

The thickness of the substrate 13 is 0.01 to 0.1 mm, preferably 0.02 to 0.03 mm. If the thickness of the base material 13 is less than 0.01 mm, the base material 13 is likely to be damaged, distorted, wrinkled, or the like when the mark 16 is printed. On the other hand, if it exceeds 0.1 mm, the base material 13 that engages with the pulley when the belt is used may peel off from the belt.

The rubber composition constituting the base material 13 is NR (natural rubber), SBR, CR (chloroprene rubber), CSM
(Chlorosulfonated polyethylene rubber), HNBR
(Hydrogenated nitrile rubber) and other additives such as carbon black, reinforcing agents such as carbon black, plasticizers, softeners, accelerators and vulcanizing agents. After impregnating the base material 13 with a rubber paste dissolved in a solvent, the base material 13 is dried to remove the solvent. Of course, rubber compounds without vulcanizing agents can also be used. In this case, the vulcanizing agent contained in the rubber layer of the belt sleeve in contact with the base material 13 affects. However, vulcanizable rubber compounds are preferred.

The rubber of the rubber composition may be NR
(Natural rubber), SBR, CR (chloroprene rubber), C
SM (chlorosulfonated polyethylene rubber), HNB
Latexes such as R (hydrogenated nitrile rubber) and vinyl pyridine-styrene-butadiene terpolymer can also be used.

On the other hand, the mark 16 and the bar code 4
R (natural rubber), SBR, CR (chloroprene rubber),
CSM (chlorosulfonated polyethylene rubber), HN
A rubber compound such as BR (hydrogenated nitrile rubber) is cured by adding a vulcanizable rubber compound such as a pigment, a reinforcing material, a plasticizer, an accelerator, a vulcanizing agent or a vulcanizing agent-free rubber compound such as toluene, methyl ethyl ketone or the like. A printing rubber composition comprising a rubber paste dissolved in a solvent or a printing rubber composition obtained by adding a silicone oil to the rubber paste, which is printed on letters, numbers, symbols, bar codes and the like.

The silicone oil was dissolved in the above solvent 3
The silicone oil solution is added to the rubber paste, and 0.15 to 0.40 parts by weight is added to 100 parts by weight of the rubber. If the addition amount of the silicone oil is less than 0.15 parts by weight, the adhesion of the mark 16 and the bar code 4 generated at the time of winding the mark material 1 cannot be sufficiently prevented, and if it exceeds 0.40 parts by weight. The adhesion of the printing rubber composition to the base material 13 is not sufficient, and the printed marks 16 and the barcode 4 become unclear when the mark material 1 is wound up.

As a method of printing the mark 16 and the bar code 4 on the base material 13 using ink, screen printing or gravure printing can be used. Here, screen printing is a type of stencil printing, and is a method of printing by printing a frame made of synthetic fiber, stainless steel wire, or the like on a frame and extruding ink. In addition, gravure printing is an intaglio made by photoengraving, with fine mesh-like depressions on the plate surface.The ink layer is made thicker and thinner according to its depth, and this is transferred to paper or the like to transfer it to the floor of a photo or painting. Reproduce the key. Suitable for mass printing by rotary printing.

Hereinafter, a method for manufacturing a belt sleeve using the mark material 1 will be described. As shown in FIG. 6, the mark 16 on which the mark material 1 is printed and the barcode 4 are arranged over the entire width so as to face the surface of the cylindrical forming drum 17. Thereafter, one or a plurality of cover canvases 5 rubbed with the vulcanizable rubber composition were wound on the forming drum 17, the cushion rubber 7 was further spirally wound on the same layer 7. A cord 19 made of a rope made of polyester, aramid fiber or the like, and a compressed rubber layer 21 are sequentially laminated. The laminate is vulcanized by being inserted into a jacket, and is released from the forming drum 17 to form a belt sleeve.

The cover canvas 5 is made of natural fibers such as cotton,
Alternatively, it is a spun yarn made of a synthetic fiber such as polyamide or polyester, a mixed spun yarn using both a natural fiber and a synthetic fiber, or a woven fabric using a filament yarn obtained by twisting a large number of filaments of a synthetic fiber. The woven fabric may be a plain weave, a twill weave, or the like, and a wide-angle canvas provided with elasticity in which the crossing angle between the warp and the weft is 90 to 120 ° may be used.

The compressed rubber layer 21 is made of aramid fiber, polyester fiber, nylon fiber, cotton, etc.
10 mm cut fibers of 1 to 15 vol% are mixed and arranged in the width direction of the belt sleeve.

During the vulcanization, the base material 13 of the mark material 1
Since the rubber composition impregnated in the substrate 13 is pressed against the cover canvas 5 at a pressure of 12 kgf / cm ² and heated to 150 to 170 ° C., the rubber composition is vulcanized and integrated with the cover canvas 5. After vulcanization, the substrate 13 is peeled off from the mark material.

The belt sleeve is hung on a driving roll and a driven roll so that the compressed rubber layer 21 is located on the front side, and is run under a predetermined tension. The running speed of the belt sleeve is not particularly limited. Further, the rotated grinding wheel is disposed near the driving side roll or the driven side roll side, and 3 to 100 V-shaped groove portions are once formed on the surface of the belt sleeve while moving so as to contact the running belt sleeve. Polish.

The direction of rotation of the grinding wheel may be the same or opposite to that of the belt sleeve. The rotation speed of this grinding wheel is 400 to 2,400 rpm. The polishing process is described in, for example, JP-A-5-200.
No. 906.

As shown in FIG. 1, the obtained power transmission belt 1 has a stretched layer 3 composed of a cover canvas 5, a cushion rubber 9
And a compression part 11 made up of a plurality of ribs 12. The mark material 1 is adhered and integrated with the cover canvas 5, and the interface between the mark material 1 and the cover canvas 5 and the interface between the base material 13 and the mark 16 have a flat surface with no steps.

As another method of manufacturing a belt sleeve according to the present invention, as shown in FIG.
1 to a plurality of cover canvases 5 rubbed with rubber on the surface of
And a compression rubber layer 21, a core wire 7, a cushion rubber 9, and one or more cover canvases 5 are sequentially laminated thereon. Then, the mark material 1 is arranged over the entire width so that the printed barcode 4 and mark 16 face the surface of the cover canvas 5 in the outermost layer. The laminate is vulcanized by being inserted into a jacket, and is released from the forming drum 17 to form a belt sleeve. After the obtained belt sleeve is inserted into another drum, the drum sleeve is cut into a V shape by a cutter while rotating the drum, and can be finished into individual V belts.

Further, as another method of manufacturing the belt sleeve according to the present invention, as shown in FIG. 6, first, at least a translucent of at least one ultra-high molecular weight polyethylene having an end joined to a smooth cylindrical mold. Then, the mark material 2 is coated on the ultra-high molecular weight polyethylene film 8 so that the mark side of the mark material 2 is the mold side. Next, the cushion rubber layer 7 is wound, and the cord 19 made of a rope is spun spirally.
After that, a vulcanization jacket is inserted on the compressed rubber layer 21. Next, the mold is placed in a vulcanization can, and after vulcanization, the cylindrical vulcanization sleeve is removed from the mold. Next, the vulcanizing sleeve is detached from the driving roll and the driven roll, and the vulcanizing sleeve is hung on another driving roll and the driven roll to travel, cut into a V shape by a cutter, and finished into individual V-belts.

FIG. 2 shows another embodiment of the present invention.
There is a V-ribbed belt 6 shown in FIG. The V-ribbed belt 6
A core wire 7 made of a high-strength, low-elongation cord made of polyester fiber, aramid fiber, or glass fiber is embedded in an adhesive rubber layer 9, and a compressed rubber layer 11 as an elastic layer is provided below the core wire. are doing. The compressed rubber layer 11 is provided with a plurality of ribs 12 having a substantially triangular cross section extending in the longitudinal direction of the belt, and is provided with an extension 3 whose back surface 8 is covered with a film 8 of ultrahigh molecular weight polyethylene.

Ultra high molecular weight polyethylene is defined herein as at least 17500 as measured by the known viscosity method.
In a sense accepted by those skilled in the art as defining a substantially linear polyethylene having an average molecular weight of from about 00 to 2,000,000 and typically not exhibiting appreciable flow under any of the conditions described in ASTM-D1238. Used. These polyethylenes are commonly available in a continuous film having a thickness of 0.005 inches to 0.04 inches as shown in FIG. The melting point of these polyethylenes is about 140 ° C.

The ultrahigh molecular weight polyethylene film 8 is made endless by applying a joint 23 at the end using a method such as welding as shown in FIG.

The ultrahigh molecular weight polyethylene film 8 needs to be transparent enough to allow a mark to be sufficiently distinguished through the film 8, and a transparent film is more preferable than a translucent film.

First, at least one translucent film 8 made of ultra-high molecular weight polyethylene whose ends are melt-joined to a smooth cylindrical mold is covered with at least a semi-transparent film 8. The mark material 2 is coated on the ultra-high molecular weight polyethylene film 8 in such a manner as to be laminated. Next, the cushion rubber layer 7 is wound, the cord 19 made of a rope is spirally spun, and a compression rubber layer 21 is further disposed. Then, a vulcanization jacket is inserted on the compression rubber layer 21. Next, the mold is placed in a vulcanization can, and after vulcanization, the cylindrical vulcanization sleeve is removed from the mold. Next, the vulcanizing sleeve is detached from the driving roll and the driven roll, and the vulcanizing sleeve is run around another driving roll and the driven roll.
Finish with ribbed belt.

The back surface 27 of the V-ribbed belt 6 manufactured by the above-described manufacturing method is covered with at least a translucent film 8 of ultra-high molecular weight polyethylene, and a bar is formed on the cushion rubber layer 7 inside the film 8. Since the mark material 2 on which the code 4 is recorded is imprinted, the bar code 4 can be sufficiently identified through the film 8 from the back surface 27 of the belt. Furthermore, since the bar code 4 does not come into direct contact with an object such as an idler pulley, the bar code 4 does not wear out even after the V-ribbed belt 6 is used.

As a belt capable of transferring the mark material 2 on which the barcode 4 is recorded to the back surface of the belt, there is a cog belt shown in FIG. As a method of manufacturing the cog belt, first, a mold having alternating teeth and grooves is prepared. Furthermore, one to several pieces of canvas and an unvulcanized rubber sheet to be a compressed rubber layer were laminated, and the cogs were formed by placing the cogs in a flat mold in which teeth and grooves were alternately arranged. Form a cog pad. Of course, in the present invention, instead of the mold having the teeth and the grooves alternately,
It is also possible to use a mold equipped with an inner mold having concave portions provided at predetermined intervals along the circumferential direction.

A mold is mounted on a molding machine (not shown),
After the outer mold having alternately toothed and grooved portions on the inner peripheral surface is inserted into the surface of the mold, the compression rubber layer 11, the adhesive rubber layer 31, the core wire 7, the extension rubber layer 29, and the reinforcing cloth 5 of the cog pad are formed.
Furthermore, the belt sleeve can be obtained by a preforming method in which the mark materials 2 are laminated to form a molded body by normal molding, a jacket is inserted into the inner peripheral surface, and vulcanization is performed. A high molecular weight polyethylene sheet can be laminated on the mark material. Vulcanization is carried out in the usual way. In the case of a belt having a series of V portions as shown in FIG. 3, after vulcanization, a cylindrical sleeve is extracted from a mold, the obtained belt sleeve is polished, and cut into a predetermined width to produce a cog belt. Also, in the case of a cog belt in which the V portion is not continuous and has only one in the longitudinal direction, after the belt sleeve is fitted into another drum, the drum is rotated and cut into a V shape by a cutter, and the individual cog belts are cut. Can be finished.

As another method of manufacturing the cog belt,
The mark material 2 is coated on the mold so that the side on which the mark is visible on the surface of the mold is the mold side. Then, the reinforcing cloth 5, the extension rubber layer 29, the adhesive rubber layer 31, the core wire 7, the compression rubber layer 11, and the reinforcing cloth 5 are laminated on each other to form a molded body by reverse molding, and the inner peripheral surface is formed. A belt sleeve can be obtained by a spancog method in which a jacket is fitted and vulcanized after fitting an outer matrix having alternating teeth and grooves. Note that a high molecular weight polyethylene sheet can be coated on the mold before the mark material 2 is coated on the mold. And vulcanization is performed by a usual method. In the case of a belt in which V portions are connected as shown in FIG.
After vulcanization, the cylindrical sleeve is extracted from the mold, the obtained belt sleeve is polished, and cut to a predetermined width to produce a cog belt. Also, in the case of a cog belt in which the V portion is not continuous and has only one in the longitudinal direction,
After the belt sleeve is inserted into another drum, the drum sleeve can be cut into a V-shape by a cutter while rotating the drum, thereby completing individual cog belts.

[0048]

As described above, according to the first aspect of the present invention, the belt has a mark printed on at least one surface of the belt, and the mark is a mark on which a bar code is recorded. Can be managed mechanically, which has the effect of reducing costs and man-hours.

According to the second aspect of the present invention, by laminating at least a translucent polyethylene film on the mark material, a bar code can be read without difficulty, and the surface on which the mark is printed is always different from the other side. There is an effect that the bar code can be read even after the use of the belt without the mark disappearing even when the belt is used in contact with the object.

According to the third aspect of the present invention, since the marked belt is a V-ribbed belt, a translucent polyethylene film is formed on the mark material even if the V-ribbed belt is subjected to friction by the back tension roller during running. The mark is not worn out by laminating
The bar code can be read even after the use of the belt.

According to the present invention, the film on which the barcode is recorded at the same time as the vulcanization of the belt is transferred at the same time as the vulcanization of the belt and printed on at least one surface of the belt. It is not necessary to perform the transfer of the mark and the mark in separate steps, which is effective.

According to the fifth aspect of the present invention, a film in which a mark formed with a bar code is recorded at the same time as vulcanization of the belt molded body is produced, and the film is transferred and printed on the back surface of the belt. Since it is a method of manufacturing a belt, it is not necessary to perform film transfer and belt vulcanization in separate steps, and it is efficient and by laminating at least a translucent polyethylene film on a mark with a bar code Also, even when the rear surface of the belt travels while being in contact with a conveyed object or a tension roll, the mark is not worn away, and the number of the belt can be read even after the belt is used.

According to the sixth aspect of the present invention, since the belt is a V-ribbed belt, a translucent polyethylene film is laminated on the mark material even if the V-ribbed belt is rubbed by the back tension roller during running. By doing so, the bar code can be read even after the use of the belt without abrasion of the mark, and the tracking of the belt lot can be managed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a V-ribbed belt provided with a mark on which a barcode is printed according to an embodiment of the present invention.

FIG. 2 is a perspective view of a V-ribbed belt according to another embodiment of the present invention.

FIG. 3 is a perspective view of a cog belt according to another embodiment of the present invention.

FIG. 4 is a perspective view of a transfer mark material on which a barcode is recorded according to the present invention.

FIG. 5 is a schematic diagram when a transfer mark material is transferred onto at least one surface of a belt.

FIG. 6 is a view showing a state before a transfer mark material is stuck on a mold, each material is laminated thereon, and vulcanization is started.

FIG. 7 is a diagram showing a state before a transfer mark material is pasted on a metal mold after laminating each material and vulcanization is started.

FIG. 8 is a diagram in which an ultra-high molecular weight polyethylene film is finished in an endless shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 V-ribbed belt 2 Mark material 3 Extension part 4 Barcode 5 Cover canvas 6 V-ribbed belt 7 Core wire 8 Film 9 Cushion rubber 11 Compressed rubber layer 12 Rib part 13 Base material 16 Mark 17 Forming drum 19 Core wire 21 Compressed rubber layer 29 Extension Rubber layer 31 Adhesive rubber layer 33 V-shaped groove 35 Top

Claims (6)

[Claims] Claims: 1. A belt for transmitting or conveying, wherein a mark is recorded on at least one surface,
A marked belt wherein the mark is a mark on which a bar code (image pattern) is recorded. 2. The marked belt according to claim 1, wherein a mark material on which a barcode is recorded is disposed on the back surface of the belt, and at least a translucent polyethylene film is laminated on the mark material. 3. The V-ribbed belt according to claim 1, wherein the marked belt is a V-ribbed belt including an adhesive rubber layer having a core buried along the longitudinal direction of the belt and a compressed rubber layer having a plurality of rib portions extending in the circumferential direction of the belt. Or the belt with a mark according to 2. 4. When printing a mark on at least one surface of a power transmission or conveyance belt, a film on which a barcode is recorded by screen printing is prepared, and the film is transferred simultaneously with belt vulcanization to form a belt. Printing on at least one surface of the belt. 5. A method for producing a power transmission or transport belt, wherein a bar code is printed on a base of a mark by at least a printing method selected from at least screen printing or gravure printing, and the mark and the resin. A step of fabricating a mark material by integrating a film base material, and after coating a film of at least translucent polyethylene with an end joined to a cylindrical or cylindrical mold, the base material side of the mark material is polyethylene A step of laminating so as to be in contact with the film, a step of winding an unvulcanized rubber sheet on the mark material, a step of spirally spinning a core wire from above the unvulcanized rubber sheet, and Further, a step of winding an unvulcanized rubber sheet into a belt molded body, and a step of transferring a mark material to the back surface of the belt by vulcanizing the belt molded body. The method of marked belt, which comprises a. 6. The V-ribbed belt according to claim 4, wherein the marked belt is a V-ribbed belt including an adhesive rubber layer having a core buried in the belt longitudinal direction and a compressed rubber layer having a plurality of rib portions extending in the circumferential direction of the belt. Or the manufacturing method of the belt with a mark as described in 5.