KR20190122153A - Multi-functional composite conveyor belt and manufacturing method thereof - Google Patents

Abstract

Provided is a multifunctional composite conveyor belt, which includes: an upper cover preventing cake attachment; a lower cover in which friction with an idler is reduced; a belt fabric provided on an upper portion of the lower cover and applying stiffness; a side cover provided on both side portions of the belt fabric at the upper portion of the lower cover in a longitudinal direction of the conveyor belt; and an abrasion identifying layer provided on an upper portion of the belt fabric and capable of identifying an abrasion degree of the upper cover, wherein the upper cover can be manufactured from a blend-shaped upper cover rubber composite having a main material having natural rubber or composite rubber and poly vinyl chloride (PVC) and a sub material of ethylene-vinyl acetate (EVA).

Description

Multifunctional compound conveyor belt and its manufacturing method {MULTI-FUNCTIONAL COMPOSITE CONVEYOR BELT AND MANUFACTURING METHOD THEREOF}

The present invention relates to a multifunctional composite conveyor belt and a method of manufacturing the same.

In general, the conveyor belt is a device for circulating a belt made of rubber, fabric, wire mesh, or steel plate to carry various materials on the belt and transport them continuously. The side of the belt is in the form of a closed curve, driven by a pulley and rotating the pulley by an electric motor.

In general, large-scale and very long belt conveyors are used in large-scale materials such as fertilizer plants, steel mills, and cement plants. Particularly, in the case of transporting particulate materials, the conveyor belts have particulate materials. Sludge cake is attached and the durability is reduced.

In the conventional conveyor belt, a cleaner device is installed to remove such sludge cake, and the sludge cake on the belt is removed. However, even when the sludge cake is removed using a cleaner device, dust or the like generated at this time is pointed out as a main cause of shortening the life by attaching to the roller.

In addition, the conventional conveyor belt has been pointed out that the power consumption is too much due to the rolling resistance caused by the friction with the driving roller, for example, the idler (rolling resistance), rolling resistance (rolling resistance) It is known to account for more than 60% of the total drive resistance of the conveyor line.

Accordingly, there is a need to develop a multifunctional composite conveyor belt that can prevent surface damage and wear, increase belt life, confirm the timing of replacement of the conveyor belt, and reduce energy consumed to drive the conveyor belt.

The problem to be solved by the present invention is to increase the life of the belt by preventing surface damage and wear, and to check the replacement time of the conveyor belt, and at the same time to reduce the energy consumed to drive the conveyor belt multifunctional composite conveyor belt To provide.

The present invention, in order to solve the above problems, the upper cover is prevented cake adhesion; A lower cover which reduces friction with the driving roller; A belt paper disposed on the lower cover to impart rigidity; Side covers disposed on both sides of the belt paper in an upper direction of the lower cover in a longitudinal direction of a conveyor belt; And a wear checking layer disposed on the belt to check the wear level of the top cover, wherein the top cover is made of natural rubber or synthetic rubber and polyvinyl chloride (PVC). The present invention provides a multifunctional composite conveyor belt, which is manufactured from a blended top cover rubber composition containing a subject and EVA (Ethylene-vinyl acetate) subsidiary.

For example, the synthetic rubber may include at least one of Butadiene Rubber (BR), Styrene Butadiene Rubber (SBR), Solution Styrene Butadiene Rubber (SSBR), and Nitrile-butadiene rubber (NBR).

For example, the top cover may include 75 to 85 parts by weight of a main body mixed with 60 to 80% by weight of acrylonitrile (NBR) and 20 to 40% of polyvinyl chloride (PVC), and 15 to 25 parts by weight of EVA. 15 parts by weight of white carbon, 30 to 50 parts by weight of filler, 3 to 8 parts by weight of oil, 1 to 5 parts by weight of vulcanizing agent, 0.5 to 5 parts by weight of vulcanization accelerator, and vulcanization 3 to 8 parts by weight of the accelerator, and 0.5 to 5 parts by weight of the slip agent can be prepared from a mixture.

For example, the top cover may have a friction coefficient of 0.8 or less (based on ISO 21182).

For example, the lower cover may include a natural rubber (NR), a styrene-butadiene rubber (SBR), a butadiene rubber (BR), a polychloroprene rubber (CR), an ethylene propylene diene terpolymer (EPDM), an ethylene propylene rubber (EPM), and NBR. (nitrile butadiene rubber), brominated poly (isobutylene-co-isoprene) rubber (BIIR), and isoprene rubber (IR) may be prepared from a lower cover composition comprising at least one.

In this case, the lower cover composition may include 51 to 73 parts by weight of NR and 27 to 49 parts by weight of BR.

For example, the wear confirmation layer may be prepared from a wear check layer composition including a colored layer and including 55 to 75 parts by weight of NR, 15 to 35 parts by weight of SBR, and 5 to 10 parts by weight of BR.

For example, the wear confirmation layer may include a fluorescent material, and may be prepared from a wear confirmation layer composition including SBR 50 to 60 parts by weight, NR 30 to 50 parts by weight, and fluorescent material (Fluorescent Material) 5 to 20 parts by weight. .

The present invention also provides a plurality of belt papers arranged in overlap; A lower cover is disposed below the belt paper; Disposing a wear checking layer on the belt paper; A side cover in a length direction of the conveyor belt at both sides of the belt paper and the wear check layer on the lower cover; And disposing an upper cover on the side cover and the wear checking layer.

In this case, the top cover is manufactured from a blended top cover rubber composition containing a natural rubber (natural rubber) or synthetic rubber and PVC (Poly (vinyl chloride)) and a subject containing EVA (Ethylene-vinyl acetate) subsidiary The upper cover may have a friction coefficient of 0.8 or less (based on ISO 21182).

According to one embodiment of the present invention, it is possible to prevent the surface damage and wear to increase the belt life, to confirm the replacement time of the conveyor belt, and to reduce the energy consumed to drive the conveyor belt.

1 shows a multifunctional composite conveyor belt according to an embodiment of the present invention.
Figure 2 shows the cake adhesion experiment of the present invention.
Figure 3 shows the degree of cake adhesion of the conveyor belt according to the embodiment and the comparative example of the present invention.
Figure 4 schematically shows a state in which the lower cover of the multifunctional composite conveyor belt of the present invention in contact with the drive roller.
5 shows an energy saving experiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms, and only the embodiments are provided to make the disclosure of the present invention complete and to those skilled in the art. It is provided to give more complete information.

Where an element is referred to herein as being located above another element 'above' or 'below', this means that the element is located directly above another element 'above' or 'below' or there is no additional element between them. Includes all meanings that may be intervened. In the present specification, the term 'upper' or 'lower' is a relative concept set at an observer's viewpoint, and when the observer's viewpoint is different, 'upper' may mean 'lower', and 'lower' means 'upper'. It may mean.

Like reference numerals in the drawings indicate substantially the same elements as each other. Also, the terms 'comprise' or 'have' are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described, or one or more other features, numbers, steps It is to be understood that the present invention does not exclude, in advance, the possibility of the presence or addition of any operation, component, part, or combination thereof.

Referring to FIG. 1, the conveyor belt 1 includes an upper cover 10, a lower cover 20, a belt paper 50, a side cover 30, and a wear check layer 40.

The upper cover 10 refers to the surface to be transported in contact with the carrier body. The top cover 10 is to reduce the friction to prevent cake adhesion, thereby greatly improving the wear resistance and life of the conveyor belt and to reduce the sludge cake processing cost.

Top cover 10 is made from a top cover composition comprising a polymer and an additive.

The polymer may be a blend including EVA (Ethylene-vinyl acetate) subtitle on the subject including natural rubber or synthetic rubber and polyvinyl chloride (PVC). The synthetic rubber may include any one or more of Butadiene Rubber (BR), Styrene Butadiene Rubber (SBR), Solution Styrene Butadiene Rubber (SSBR), and Nitrile-butadiene rubber (NBR).

For example, the polymer composition may be 50 to 80 parts by weight: 15 to 35 parts by weight: 5 to 25 parts by weight of the synthetic rubber: PVC: EVA.

When the synthetic rubber includes BR (Butadiene Rubber), it is possible to improve the wear resistance, bending resistance, rebound elasticity, cold resistance of the top cover 10. In this case, BR may be prepared by butadiene solution polymerization.

When including SBR (Styrene Butadiene Rubber) as the synthetic rubber, to achieve a uniform quality of the top cover 10, it is possible to improve the heat resistance and wear resistance. At this time, SBR can be produced by the low temperature emulsion polymerization method of Styrene and Butadiene.

When the synthetic rubber includes SSBR (Solution Styrene Butadiene Rubber), it is possible to improve the heat resistance and wear resistance of the top cover (10). In this case, SSBR may be prepared by a solution polymerization method using a Li (lithium) catalyst.

When NBR (Nitrile-butadiene rubber) is included as the synthetic rubber, it is possible to greatly improve the usability with PVC while improving the wear resistance and heat resistance of the top cover 10. At this time, NBR may be prepared by low temperature emulsion polymerization method of acrylonitrile and butadiene.

When the EVA is used as the subsidiary agent, the flexibility, surface gloss, and texture of the top cover 10 may be improved.

For example, it may be mixed with 60 to 80% by weight of NBR and 20 to 40% of polyvinyl chloride (PVC). By adding PVC to the NBR, the slipperiness is improved, surface gloss or texture is improved, and flexibility may be improved than the conventional NBR. Within the above content range, the compatibility of NBR and PVC is excellent, the slipability is greatly improved compared to the case of using only conventional NBR, and the surface gloss or texture is excellent.

Ethylene Vinyl Acetate (EVA) subsidiary may be mixed with the NBR and PVC mixed material to form the polymer. Based on 100 parts by weight of the polymer, 75 to 85 parts by weight of the main ingredient and 15 to 25 parts by weight of the EVA (Ethylene Vinyl Acetate) subsidiary may be mixed. When the EVA is 25 parts by weight or more, a problem may occur in which the mixing with the main material may not occur. When the amount is less than 15 parts by weight, the improvement of the flexibility, surface gloss, ozone resistance, and texture of the top cover 10 may be insufficient. have.

As the additive, white carbon, a filler, a process oil, a vulcanizing agent, a vulcanization accelerator, a vulcanization accelerator and a slip agent are added.

White carbon is used as a rubber reinforcing agent and finely divided silicic anhydride, hydrous calcium silicate and aluminum silicate are used. For example, the amount added may be 15 to 25 parts by weight based on 100 parts by weight of the top cover composition.

Filler (filler) is added for the purpose of reinforcing increase of the top cover composition, for example, may be added to 30 to 50 parts by weight based on 100 parts by weight of the top cover composition.

Process oil is added to the top cover composition to increase the flexibility and processability of the product as well as the top cover composition itself, for example, 3 to 8 based on 100 parts by weight of the top cover composition Parts by weight may be added.

On the other hand, in order to form a crosslinked structure between the rubber molecules, a rubber vulcanizing agent such as sulfur is added to increase the elasticity of the rubber. That is, vulcanization refers to an operation of forming a crosslinked structure between rubber molecules by mixing a vulcanizing agent with raw rubber, and by this operation, rubber elasticity can be increased. For example, 1 to 5 parts by weight of a vulcanizing agent may be added to 100 parts by weight of the top cover composition.

Vulcanization accelerator (vulcanization accelerator) is used in combination with a vulcanizing agent to promote the vulcanization reaction, to increase the vulcanization rate during rubber vulcanization, decrease the vulcanization temperature, shorten the vulcanization time, for example, the phase 0.5 to 5 parts by weight based on 100 parts by weight of the cover composition may be added.

The vulcanization accelerator is a compounding agent used in combination with the vulcanization accelerator to complete its promoting effect. For example, zinc oxide (ZnO) may be used as the vulcanization accelerator. For example, 1 to 8 parts by weight of ZnO may be added based on 100 parts by weight of the top cover composition.

On the other hand, the top cover composition may be added as a slip agent (slip agent) as an additive in order to improve the slip resistance by reducing the frictional resistance of the conveyor belt surface. The slip agent reduces the coefficient of friction of the upper cover 10 to prevent the wear of the conveyor belt due to the jamming of the package between the skirting board and the conveyor belt, and the conveyor belt and the particles on the side of the upper cover 10 in contact with the raw material. It is possible to further reduce the frictional resistance with the raw material and to further improve the effect of preventing the sludge cake from adhering to the surface.

For example, as the slip agent, 9-Octadecenamide (C ₁₇ H ₃₃ CONH ₂ ), 13-Docosenamide (C ₂₁ H ₄₁ CONH ₂ ), Octadecanamide (C ₁₇ H ₃₅ CONH ₂ ), and Docosanamide (C ₂₁ H ₄₃ CONH ₂₎ ) At least one or blends thereof may be used. For example, the slip agent may be used in 0.3 ~ 10 parts by weight based on 100 parts by weight of the merchant cover composition. Considering the polymer composition according to an embodiment of the present invention, when the slip agent content is less than 0.3 parts by weight, the slip improvement effect is insufficient, and as the slip agent content increases, the slip property is improved, but 10 parts by weight. When exceeding, even if the slip agent content is increased, there may be a problem in that durability is reduced while the friction coefficient of the upper cover 10 is not reduced.

In addition, pigments, dispersants, antioxidants may be further added as additives. For example, stearic acid may be used as a dispersant, and 0.1 to 2 parts by weight may be used based on 100 parts by weight of the top cover composition. For example, the pigment may be added 1 to 5 parts by weight based on 100 parts by weight of the top cover composition, and the anti-aging agent may be added to 1 to 3 parts by weight based on 100 parts by weight of the top cover composition.

The top cover 10 has a friction coefficient of 1.0 or less, for example, 0.8 or less, and a tensile strength of 130 kgf / cm 2 or more, for example, 140 kgf / cm 2 or more, and an elongation of 350% or more, for example. 450% or more, abrasion resistance (wear amount) of 150 kPa or less, for example, 120 kPa or less, cake adhesion is prevented on the surface, the wear resistance and life of the conveyor belt is greatly improved, and the sludge cake treatment cost is reduced.

The lower cover 20, referring to Figure 4, refers to the surface in contact with the drive roller 2, for example, the idler in the conveyor belt. The lower cover 20 of the present invention is characterized by reducing the power consumption by more than 20% compared to the conventional conveyor belt by controlling the viscoelastic properties of the rubber composition. That is, the lower cover 20 is continuously resilient to a level of rebound elasticity of 75 (based on KS M 6534) to reduce the contact area with the driving roller by quickly recovering the deformation of the rubber generated in contact with the driving roller. Energy loss due to strain fatigue caused by

The bottom cover rubber composition includes NR (Natural Rubber), SBR (Styrene-Butadiene Rubber), BR (Butadiene Rubber), CR (polychloroprene rubber), EPDM (Ethylene Propylene Diene Terpolymer), EPM (ethylene propylene rubber), NBR (nitrile) butadiene rubber (BIIR), brominated poly (isobutylene-co-isoprene) rubber (BIIR), and IR (Isoprene Rubber) may include at least one or more of, for example, NR 51-73 parts by weight and BR 27-49 It may include a weight part, for example, the BR may include Ultra High-cis Polybutadiene Rubber.

Belt paper 50 is formed in the center of the conveyor belt to improve the durability of the conveyor belt, and includes nylon, polyester, aramid material, steel cord (steel cord) and the like. A plurality of belt sheets 50 may be stacked, for example, 1 to 15 may be stacked. For example, the belt paper 50 may be a rubber layer including nylon, polyester, and aramid material, and a steel cord may be selectively inserted between the rubber layers. For example, when three belts 50 are applied, the upper layer and the lower layer may be formed of NN (Nylon / Nylon) material, and the intermediate layer may have a shape in which a steel cord is inserted. For example, when six belts 50 are applied, the upper two layers and the lower two layers may include NN (Nylon / Nylon) material, and the middle two layers may be inserted with steel cords. have. Such a structure can be applied to balance stiffness and flexibility.

For example, the steel cord may be applied to any one or more of the 3x3, 3x6, 3x7, and 4x6 7x7 7x19 structure, the diameter of the steel cord, the adhesion to the adhesive rubber, the degree of rubber digging between the steel cord, the package The blending ratio with the adjusting rubber can be determined in consideration of the degree of impact absorption. For example, the steel cord may have a diameter of 0.8 mm to 11 mm. Sufficient rigidity can be given without increasing the thickness of the conveyor belt within the numerical range.

 In addition, the thickness of the belt paper 50 is 0.5 mm to 10.0 mm is applied according to the use environment of the conveyor belt, it can satisfy both the flexibility and rigidity of the conveyor belt. On the other hand, when the steel cord material is applied to the belt paper 50, brass plating may be further formed on the surface of copper and zinc to improve adhesion to rubber.

The side cover 30 is disposed on both sides of the belt paper 50 to maintain a balance between the rigidity formed by the belt paper 50 and the flexibility required for the conveyor belt. For example, the width of the pair of side covers 30 may be 0.02 W to 0.5 W, for example, 0.02 W to 0.3 W based on the overall width W of the conveyor belt. Within this range, it is possible to maintain a balance between the rigidity formed by the belt 50 and the flexibility required for the conveyor belt. The material of the side cover 30 may be the same as at least one of the material of the upper cover 10 and the lower cover 20. On the other hand, the term "width" refers to the direction perpendicular to the longitudinal direction of the conveyor belt in the surface on which the moving body is carried.

The side cover 30 is formed from the side cover composition containing SBR 50-70 weight part and NR 30-50 weight part.

The wear check layer 40 is disposed on the belt paper 50 so as to check the wear level of the top cover 10, NR (Natural Rubber), SBR (Styrene-Butadiene Rubber), and BR (Butadiene Rubber). ), Polychloroprene rubber (CR), ethylene propylene diene terpolymer (EPDM), ethylene propylene rubber (EPM), nitrile butadiene rubber (NBR), brominated poly (isobutylene-co-isoprene) rubber (BIIR), and isoprene rubber (IR) At least one of the at least one is formed from the combined wear confirmation layer composition, for example, may be prepared from a wear confirmation layer composition comprising 55 to 75 parts by weight of NR, 15 to 35 parts by weight SBR and 5 to 10 parts by weight of BR. have.

The wear confirmation layer 40 has at least one or more of a tensile strength of 16 MPa or more, an elongation rate of 50% or more, abrasion resistance (wear amount) of 250 kPa or less, a peel strength of 35 N / mm or more, and an upper cover 10 and a side cover ( 30) has an adhesion of 8.0 kN / m or more.

For example, the wear confirmation layer 40 may include a fluorescent material. The wear checking layer composition including the fluorescent material may include 50 to 60 parts by weight of SBR, 30 to 50 parts by weight of NR, and 5 to 20 parts by weight of a fluorescent material. In this case, the wear confirmation layer 40 may have an adhesive strength of at least one of the upper cover 10 and the side cover 30 of 25 to 40 kgf / inch, for example, 30 to 35 kgf / inch. When the adhesive strength is within the numerical range, while the delamination phenomenon is prevented during the manufacturing process of the conveyor belt 1, the phenomenon that the wear checking layer 40 is contracted may be prevented.

For example, the particle size of the fluorescent material may be 0.5 ~ 8μm, it can be expected to improve the physical properties by filling and dispersing within the numerical range, it is possible to supplement the heat resistance characteristics. On the other hand, the wear confirmation layer 40 can improve the chemical resistance by applying a fluorescent material, it is possible to further enhance the visibility due to the high reflectance during the absorption and emission of energy in the short wavelength region of the visible portion in the ultraviolet portion. In particular, by applying a fluorescent material can greatly improve the visibility at night.

Hereinafter, the manufacturing method of the multifunctional compound conveyor belt is demonstrated. Specific materials, shapes, physical properties, etc. of the conveyor belt can be applied to the bar described above.

The manufacturing method of the multifunctional composite conveyor belt is arranged by stacking a plurality of belt paper 50; A lower cover 20 is disposed below the belt paper; Disposing the wear checking layer 40 on the belt paper 50; Disposing side covers (30) in the longitudinal direction of the conveyor belt at both sides of the belt paper (50) and the wear checking layer (40) above the lower cover (20); And disposing an upper cover 10 on the side cover 30 and the wear checking layer 40.

A plurality of belt paper 50 is formed to give rigidity to the conveyor belt, there is no limit to the number as described above, the lamination operation may be carried out in a separate molding machine.

Next, both ends are cut to fit the reference width in order to match the width deviation of the plurality of belts 50 and to match the symmetry of the conveyor belt.

Next, the lower cover 20 manufactured by using the above-described lower cover composition under the plurality of belt papers 50 is disposed under the belt paper 50.

Next, the side cover 30 is disposed at both sides of the lower cover 20 in the longitudinal direction of the conveyor belt, and at this time, a portion of the lower cover 20 protruding from the side cover 30 is cut.

Next, the wear checking layer 40 manufactured by using the wear checking layer composition described above is disposed on the plurality of belt sheets 50. The side cover 30 is formed to be higher than the height of the plurality of belt paper 50 is stacked, the wear checking layer 40 is formed as much as the stepped portion of the plurality of belt paper 50 and the side cover (30). That is, by arranging the wear check layer 40 to make the upper surface of the conveyor belt being manufactured flat, it is possible to improve the smoothness of the upper cover 10 to be formed later.

Next, the upper cover 10 is disposed on the plurality of belt papers 50 and the side cover 30, and a portion of the upper cover 10 protruding from the side cover 30 is cut.

Hereinafter, the performance evaluation of the multifunctional composite conveyor belt manufactured in accordance with an embodiment of the present invention will be described with reference to the following experimental example.

Experimental Example 1 Experiment of Attaching Top Cover Cake

A multifunctional composite conveyor belt (example) and a conventionally used conveyor belt (comparative example) according to one embodiment of the present invention were prepared.

Driving roller 2 according to the embodiment and the comparative example is driven for two hours on two conveyor lines having the same driving conditions such as line length, conveyance amount, driving speed, and the like. The rate at which the cake adheres to the top cover was measured from the amount of cake falling on the cake collecting section 3a at.

1 time(%) Episode 2(%) 3rd time(%) 4 times (%) 5 times (%) Average(%) Example 65 75 70 73 67 70 Comparative example 96 99 98 99 99 98.2

3 (a) and the surface of the top cover according to the embodiment are shown in Figure 3 (b), respectively.

That is, the multifunctional composite conveyor belt manufactured according to an embodiment of the present invention can be confirmed that the degree of attachment of the cave is significantly reduced compared to the conventional conveyor belt, thereby improving wear resistance and increasing belt life.

Experimental Example 2: Energy Reduction Experiment of Lower Cover

A multifunctional composite conveyor belt (example) and a conventionally used conveyor belt (comparative example) according to one embodiment of the present invention were prepared.

As shown in FIG. 5, a conveyor belt according to the embodiment and the comparative example is driven for two hours on two conveyor lines having the same driving conditions such as line length, conveyance amount and driving speed, and a power meter is connected to the conveyor apparatus. Consumption was measured.

1 time (KW) 2 times (KW) 3 times (KW) 4 times (KW) 5 times (KW) Average (KW) Example 45 46 44 39 42 43.2 Comparative example 70 64 60 54 56 60.8

That is, the multifunctional composite conveyor belt manufactured according to an embodiment of the present invention can be seen that the power consumption is reduced by more than 20% compared to the conventional conveyor belt.

As described above, the detailed description of the present invention has been made by the embodiments with reference to the accompanying drawings. However, since the above-described embodiments have only been described by way of example, the present invention is limited to the above embodiments. It should not be understood, the scope of the present invention will be understood by the claims and equivalent concepts described below.

1: conveyor belt
2: drive roller
3: cake
3a: Cake Collection
10: top cover
20: lower cover
30: side cover
40: wear confirmation layer
50: belt paper

Claims (10)

An upper cover to prevent cake from being attached;
A lower cover which reduces friction with the driving roller;
A belt paper disposed on the lower cover to impart rigidity;
Side covers disposed on both sides of the belt paper in an upper direction of the lower cover in a longitudinal direction of a conveyor belt; And
A wear checking layer disposed on the belt paper to check a wear level of the upper cover;
Including,
The top cover is manufactured from a blended top cover rubber composition containing natural rubber or synthetic rubber and PVC (Poly (vinyl chloride)) and a blend of EVA (Ethylene-vinyl acetate) additives. Composite conveyor belt.
The method according to claim 1,
The synthetic rubber comprises at least one of Butadiene Rubber (BR), Styrene Butadiene Rubber (SBR), Solution Styrene Butadiene Rubber (SSBR), and Nitrile-butadiene rubber (NBR).
The method according to claim 1,
The top cover may include 75 to 85 parts by weight of a main body mixed with 60 to 80% by weight of acrylonitrile (NBR) and 20 to 40% of polyvinyl chloride (PVC), and 15 to 25 parts by weight of EVA. 15 parts by weight to 25 parts by weight of white carbon, 30 to 50 parts by weight of filler, 3 to 8 parts by weight of oil, 1 to 5 parts by weight of vulcanizing agent, 0.5 to 5 parts by weight of vulcanization accelerator, vulcanization accelerator 3 A multifunctional composite conveyor belt, prepared from a top cover composition containing ˜8 parts by weight and 0.5 to 5 parts by weight of a slip agent.
The method according to claim 1,
The top cover has a coefficient of friction (based on ISO 21182) 0.8 or less, multifunctional composite conveyor belt.
The method according to claim 1,
The lower cover is NR (Natural Rubber), SBR (Styrene-Butadiene Rubber), BR (Butadiene Rubber), CR (polychloroprene rubber), EPDM (Ethylene Propylene Diene Terpolymer), EPM (ethylene propylene rubber), NBR (nitrile butadiene) A multifunctional composite conveyor belt made from a bottom cover composition comprising at least one of rubber), brominated poly (isobutylene-co-isoprene) rubber (BIIR), and isoprene rubber (IR).
The method according to claim 5,
The lower cover composition is NR 51-73 parts by weight and BR 27-49 parts by weight, multifunctional composite conveyor belt.
The method according to claim 1,
The wear confirmation layer includes a colored layer,
The wear confirmation layer is a multi-functional composite conveyor belt prepared from a wear confirmation layer composition comprising 55 to 75 parts by weight of NR, 15 to 35 parts by weight SBR and 5 to 10 parts by weight of BR.
The method according to claim 1,
The wear confirmation layer comprises a fluorescent material, SBR 50 ~ 60 parts by weight, NR 30 ~ 50 parts by weight, fluorescent material (Fluorescent Material) is made from a wear confirmation layer composition comprising 5 to 20 parts by weight, multifunctional composite conveyor belt .
Placing a plurality of belts overlying;
A lower cover is disposed below the belt paper;
Disposing a wear checking layer on the belt paper;
A side cover in a length direction of the conveyor belt at both sides of the belt paper and the wear check layer on the lower cover; And
Disposing an upper cover on the side cover and the wear checking layer;
Including, multifunctional composite conveyor belt manufacturing method.
The method according to claim 9,
The top cover is manufactured from a blended top cover rubber composition containing a natural rubber or synthetic rubber and PVC (Poly (vinyl chloride)) and a main body containing EVA (Ethylene-vinyl acetate) subsidiary,
The top cover has a coefficient of friction (based on ISO 21182) 0.8 or less, multifunctional composite conveyor belt manufacturing method.

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