JP2003048609A - Conveyer belt - Google Patents

Conveyer belt

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Publication number
JP2003048609A
JP2003048609A JP2001236607A JP2001236607A JP2003048609A JP 2003048609 A JP2003048609 A JP 2003048609A JP 2001236607 A JP2001236607 A JP 2001236607A JP 2001236607 A JP2001236607 A JP 2001236607A JP 2003048609 A JP2003048609 A JP 2003048609A
Authority
JP
Japan
Prior art keywords
rubber
conveyor belt
cover rubber
back cover
running resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001236607A
Other languages
Japanese (ja)
Inventor
Atsushi Azuma
篤 東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bando Chemical Industries Ltd
Original Assignee
Bando Chemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bando Chemical Industries Ltd filed Critical Bando Chemical Industries Ltd
Priority to JP2001236607A priority Critical patent/JP2003048609A/en
Publication of JP2003048609A publication Critical patent/JP2003048609A/en
Pending legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a conveyer belt with low running resistance that runs stably without meandering by solving conventional problems that use of rear cover rubber with a small loss factor leads to low running stability and insufficient reduction of running resistance and that inclusion of reinforcing cloth results in belt warp. SOLUTION: In the conveyer belt provided with cover rubber at both front and rear surfaces of a tensile body, at least a rear cover rubber is made of a rubber composition wherein rubber obtained by blending natural rubber and polybutadiene rubber having a molecular weight distribution of 2.5 or less according to GPC method (Mw/Mn) in a ratio of 80/20 to 30/70 by weight is a base.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、コンベヤベルト、
特に長距離に好適なコンベヤベルトに関する。 【0002】 【従来の技術】近年、コンベヤベルトは、運搬量を上げ
るためと長距離化のために、大型化と強力化が進み、使
用時の消費電力が大きくなってきている。そこで、使用
時の消費電力を小さくするために、走行抵抗が小さいコ
ンベヤベルトが求められている。 【0003】ところで、この走行抵抗には、キャリヤロ
ーラの回転抵抗、プーリの回転抵抗、ベルトの長さに起
因する抵抗、コンベヤベルトの変形や裏カバーゴムがキ
ャリヤローラを乗り越える際の変形が原因のゴム粘弾性
特性から生じるロスなどに起因する抵抗などがある。 【0004】従来、走行抵抗を下げ、使用時の消費電力
を小さくするために、カバーゴムの材料として、反撥弾
性の大きい、すなわち、粘弾性特性のロスファクター
(tanδ)が小さい材料、例えば、天然ゴムやブタジ
エンゴムなどが用いられている(特開平11−1395
23号公報、以下、従来技術1という)。また、裏カバ
ーゴム側の剛性を上げるために、張力体と裏カバーゴム
の中間に補強布を入れることが行われている(以下、従
来技術2という)。 【0005】しかしながら、従来技術1のロスファクタ
ーの小さい単独ゴムをベースとするゴム組成物を裏カバ
ーゴムとするコンベヤベルトでは、走行抵抗の低減が未
だ不十分であり、また、裏カバーゴムの反撥弾性が大き
くなり過ぎ、走行中に蛇行などが発生しやすく、走行安
定性が低下するとの問題点がある。 【0006】また、従来技術2のように、裏カバーゴム
側のみに補強布を入れると、張力体を中心として表カバ
ーゴム側と裏カバーゴム側とで剛性が異なり過ぎるた
め、コンベヤベルトが反るという問題点がある。 【0007】 【発明が解決しようとする課題】そこで本発明は、前記
問題点に鑑み、走行抵抗が低く且つ蛇行のない安定した
走行が可能なコンベヤベルトを供給することを課題とす
る。 【0008】 【課題を解決するための手段】本発明者らは、鋭意研究
した結果、下記の手段により前記課題が解決されること
を見出した。すなわち、本発明は、張力体の表裏両面に
カバーゴムを設けたコンベヤベルトにおいて、少なくと
も裏カバーゴムが、天然ゴムと、GPC法による分子量
分布(Mw/Mn)が2.5以下のポリブタジエンゴム
とを重量比率が80/20〜30/70でブレンドした
ゴムをベースとするゴム組成物からなることを特徴とす
るコンベヤベルトにある。 【0009】斯かる構成のコンベヤベルトでは、裏カバ
ーゴムとして、天然ゴム及び分子量分布の狭いポリブタ
ジエンゴムとのブレンドゴムをベースゴムとするゴム組
成物を用いることにより、ベルトの剛性が高くなり走行
抵抗が低くなる。また、屈曲性にも優れるため、ベルト
の幅方向には変形が容易なコンベヤベルトとなる。さら
に、反撥弾性が大きくなりすぎることがないため、走行
安定性が良好なものとなる。 【0010】 【発明の実施の形態】以下、本発明の実施の形態につい
て説明する。 【0011】本発明に係るコンベヤベルト1は、図1に
断面図を示すように、使用面となる表カバーゴム2と、
その反対面となる裏カバーゴム4と、該表カバーゴム2
および裏カバーゴム4との間に挟まれた張力体3とが層
状に積層されてなる。ここで、裏カバーゴム4とは、コ
ンベヤベルト1において、その使用時にプーリやキャリ
ヤローラなどの駆動装置あるいは支持装置と接する側の
カバーゴムを指すものである。 【0012】裏カバーゴム8は、天然ゴムとポリブタジ
エンゴムとのブレンドゴムをベースとするゴム組成物か
らなる。ここで、天然ゴムとしては、ゴムの木の樹液か
らとった通常の天然ゴムの他、天然ゴムの成分を合成し
たイソプレンを含むゴムを使用することができる。 【0013】裏カバーゴム8を構成するポリブタジエン
は、特定の制御された分子量分布を有し、天然ゴムに対
し特定割合でブレンドして用いることを特徴とする。即
ち、該ポリブタジエンは、その分子量分布(Mw/M
n)が2.5以下のもの、さらには2.0〜2.5のも
のを用いることがより好ましい。尚、本発明でいう分子
量分布(Mw/Mn)とは、ゲルパーミエーションクロ
マトグラフ(GPC)法により、標準状態の下で測定さ
れたものである。そして、天然ゴムに対する該ポリブタ
ジエンゴムのブレンド比(NR/BR)は、80/20
〜30/70となるように配合して用いることが好まし
い。 【0014】このように、分子量分布の狭い、言い換え
ると分子量の比較的揃ったポリブタジエンをブレンドす
ることにより、反撥弾性が高くなると同時に広い温度範
囲で剛性が維持でき、ロスファクター(tanδ)も小
さくすることができる。結果として、コンベヤベルトの
キャリヤローラ等への乗り上げ抵抗を減少することがで
き、しかも蛇行の少ない安定した走行が可能となる。 【0015】一方、表カバーゴム2については、その材
料は特に限定されず、例えば、天然ゴム、BR(ポリブ
タジエンゴム)、SBR(スチレン・ブタジエンゴム)
や、これらの混合物などの、従来からのコンベヤベルト
に使用されている材料を用いることができる。中でも、
粘弾性特性のロスファクターが小さく、摩擦係数の小さ
いものが、走行抵抗が低くなり易いとの観点から好まし
い。また、前記裏カバーゴム4と同じゴム組成物を使用
することにより、裏カバーゴムと同様の剛性等を得るこ
とも可能である。 【0016】また、前記ゴム組成物は、上述したように
天然ゴムとポリブタジエンゴムのブレンドゴムをベース
とし、これに、カーボンブラック、シリカなどの補強
剤、炭酸カルシウム、タルクなどの充填剤、加硫剤、加
硫促進剤、可塑剤、老化防止剤、加工助剤などの通常使
用されている配合剤を適宜混練したものである。 【0017】次に、張力体3は、搬送物や走行抵抗によ
るベルト張力を担うもので、帆布やコードなどを主な構
成要素とするものである。該張力体3は、帆布を使用す
る場合はRFL(レゾルシン・ホルマリン・ラテック
ス)で接着処理をし、コードを使用する場合はコードを
接着処理し、更に該帆布又はコードの両面に接着ゴム6
を介在させ、前記表カバーゴムおよび前記裏カバーゴム
に接着されるものである。 【0018】本発明のように、特に長距離のコンベヤベ
ルトを対象とする場合には、張力体としてスチールコー
ドを用いることが好ましい。スチールコードを埋設する
接着ゴム6は、従来からのコンベヤベルトに使用されて
いる材料を用いることができ、例えば、SBR70重量
部、天然ゴム30重量部、HAFカーボンブラック50
重量部、アロマ系オイル10重量部、ステアリン酸1重
量部、酸化亜鉛5重量部、老化防止剤6C2重量部、ナ
フテン酸コバルト4重量部、硫黄2重量部、加硫促進剤
CZ1重量部との配合物を用いることができる。 【0019】また、本発明に係るコンベヤベルト1は、
従来からのコンベヤベルトの製造方法と同様の製造方法
を用いることによって製造でき、さらに、従来と同様に
して使用することができる。 【0020】 【実施例】以下、本発明に係るコンベヤベルトの実施例
と、比較例とを示すことにより、本発明についてさらに
詳細に説明する。 【0021】表1の配合表に基づき、ベースゴム、カー
ボンブラック、オイル、加硫剤等の配合剤をバンバリー
ミキサーに投入し、練りゴムを得、この練りゴムをカレ
ンダーロールに通し、3mm厚の表裏両用のカバーゴム
用シート、接着ゴムシートを形成した。2本のローラか
らなるベルト成形機のローラ間に、防錆と接着用亜鉛メ
ッキを施したスチールコード(7×7 6.1mmφ)
を12mm間隔で幅方向に並べて供給し、スチールコー
ドの上方に前記接着ゴムシート1枚、表カバーゴム用ゴ
ムシート2枚を、スチールコードの下方に接着ゴム、裏
カバー用ゴムシート2枚を供給し、成形ローラで加圧し
て未加硫のスチールコードコンベヤベルト成形体を形成
した。次いで、上記スチールコードコンベヤベルト成形
体を段プレスに供給し、145℃で45分加圧加熱加硫
し、未加硫部分を順送りして加硫し、幅200mm、厚
さ18.4mm、長さ5mの帯状コンベヤベルト(走行
抵抗評価用の実施例1〜3および比較例1〜3)を作製
した。 【0022】尚、前記実施例および比較例の作製におい
ては、下記の各原材料を用いた。天然ゴム…RSS#3
(タイ産)。BR100…ポリブタジエンゴム、Mw/
Mn=4.7(宇部興産(株)製)。BR360L…ポ
リブタジエンゴム、Mw/Mn=2.4(宇部興産
(株)製)。ナイロン(ポリアミド系合成繊維)短繊維
…1mm長(東レ(株)製)。HAFカーボンブラック
…シースト3(東海カーボン(株)製)。アロマ系オイ
ル…JSR AROMA(JSR(株)製)。ステアリ
ン酸…ステアリン酸(新日本理化(株)製)。酸化亜鉛
…亜鉛華3種(堺化学工業(株)製)。老化防止剤…ア
ンチゲン6C(住友化学工業(株)製)。ミクロクリス
タリンワックス…サンタイト(精工化学(株)製)。硫
黄…粉末硫黄(細井化学工業(株)製)。加硫促進剤…
ノクセラーCZ(大内新興化学工業(株)製)。 【0023】得られた帯状コンベヤベルトの端部を接合
して無端の評価用ベルトとし、図2に示す走行抵抗試験
機に取り付けて走行抵抗を測定した。即ち、ヘッドプー
リAとテールプーリA’間の中央で、ベアリングローラ
B’で連結された一対の負荷ローラB、Bによってベル
トEに5kgの荷重をかけ、その状態でベルトEを10
0m/分の速度で走行させた時、負荷ローラBの反対面
側に設けたスライド台Fに支持されたローラCが受ける
走行抵抗を、スライド台Fに隣接して設置したロードセ
ルD(共和電業(株)製、LM−100KA)によって
測定した。以上のようにして測定した結果を、従来の天
然ゴムのみをベースゴムとするカバー材を有するコンベ
ヤベルト(比較例2)の走行抵抗を100とする指数で
表した。結果を表1下段に示す。 【0024】 【表1】【0025】表1に示したように、裏カバーゴムに分子
量分布が2.5以下であるポリブタジエンゴム(BR3
60L)と天然ゴム(NR)との重量比(NR/BR)
が80/20〜30/70のブレンドゴムをベースとす
るゴム組成物を用いることにより、走行抵抗を10〜2
5%程度、低減させることができ、しかも蛇行量につい
ても10mm以内に納めることができる。 【0026】 【発明の効果】以上のように、本発明に係るコンベヤベ
ルトによれば、分子量分布の狭いポリブタジエンゴムと
天然ゴムとを特定の配合比率でブレンドしたゴムをベー
スゴムとするゴム組成物を用いることにより、走行抵抗
が低く且つ走行安定性が良好なものとなる。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor belt,
Particularly, the present invention relates to a conveyor belt suitable for long distances. 2. Description of the Related Art In recent years, conveyor belts have been increased in size and strength in order to increase the transport amount and extend the distance, and the power consumption during use has been increasing. Therefore, in order to reduce power consumption during use, there is a demand for a conveyor belt having low running resistance. Incidentally, the running resistance is caused by the rotation resistance of the carrier roller, the rotation resistance of the pulley, the resistance caused by the length of the belt, the deformation of the conveyor belt, and the deformation when the back cover rubber gets over the carrier roller. There is a resistance caused by a loss caused by the rubber viscoelastic properties. Conventionally, as a material for the cover rubber, a material having a high rebound resilience, that is, a material having a small loss factor (tan δ) of viscoelastic properties, for example, natural rubber, in order to reduce running resistance and reduce power consumption during use. Rubber and butadiene rubber are used (Japanese Patent Laid-Open No. 11-1395)
No. 23, hereinafter referred to as prior art 1). Further, in order to increase the rigidity of the back cover rubber side, a reinforcing cloth is inserted between the tension member and the back cover rubber (hereinafter, referred to as conventional technology 2). However, in the conveyor belt of the prior art 1 in which the rubber composition based on a single rubber having a small loss factor is used as the back cover rubber, the running resistance is still insufficiently reduced, and the rebound of the back cover rubber is still insufficient. There is a problem in that the elasticity becomes too large, meandering or the like easily occurs during traveling, and traveling stability is reduced. Further, when the reinforcing cloth is inserted only on the back cover rubber side as in the prior art 2, the rigidity of the front cover rubber side and the back cover rubber side with respect to the tension member is too different, so that the conveyor belt is Problem. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a conveyor belt having low running resistance and capable of stable running without meandering. Means for Solving the Problems As a result of intensive studies, the present inventors have found that the above problems can be solved by the following means. That is, the present invention relates to a conveyor belt in which cover rubber is provided on both front and back surfaces of a tension member, wherein at least the back cover rubber is made of natural rubber and polybutadiene rubber having a molecular weight distribution (Mw / Mn) of 2.5 or less by a GPC method. Is a rubber composition based on rubber blended at a weight ratio of 80/20 to 30/70. In the conveyor belt having the above-mentioned structure, the rigidity of the belt is increased by using a rubber composition having a base rubber of a blend rubber of natural rubber and polybutadiene rubber having a narrow molecular weight distribution as the back cover rubber. Becomes lower. Further, since the belt has excellent flexibility, the conveyor belt can be easily deformed in the width direction of the belt. Furthermore, since the rebound resilience does not become too large, the running stability is improved. Embodiments of the present invention will be described below. As shown in the sectional view of FIG. 1, a conveyor belt 1 according to the present invention comprises:
The back cover rubber 4 on the opposite side and the front cover rubber 2
And the tension member 3 sandwiched between the back cover rubber 4 and the tension member 3 are laminated in layers. Here, the back cover rubber 4 refers to a cover rubber on the side of the conveyor belt 1 that comes into contact with a driving device such as a pulley or a carrier roller or a supporting device during use. The back cover rubber 8 is made of a rubber composition based on a blend rubber of natural rubber and polybutadiene rubber. Here, as the natural rubber, besides ordinary natural rubber obtained from the sap of a rubber tree, a rubber containing isoprene obtained by synthesizing a natural rubber component can be used. The polybutadiene constituting the back cover rubber 8 has a specific controlled molecular weight distribution, and is characterized in that it is used by being blended with natural rubber at a specific ratio. That is, the polybutadiene has a molecular weight distribution (Mw / M
More preferably, n) is 2.5 or less, more preferably 2.0 to 2.5. The molecular weight distribution (Mw / Mn) in the present invention is a value measured by a gel permeation chromatograph (GPC) under a standard condition. The blend ratio of the polybutadiene rubber to natural rubber (NR / BR) is 80/20.
It is preferable to use it by blending so as to be 30/70. As described above, by blending polybutadiene having a narrow molecular weight distribution, in other words, a relatively uniform molecular weight, the rebound resilience can be increased, the rigidity can be maintained over a wide temperature range, and the loss factor (tan δ) can be reduced. be able to. As a result, the running resistance of the conveyor belt on the carrier roller or the like can be reduced, and stable running with less meandering can be achieved. On the other hand, the material of the front cover rubber 2 is not particularly limited. For example, natural rubber, BR (polybutadiene rubber), SBR (styrene / butadiene rubber)
Alternatively, materials used in conventional conveyor belts, such as mixtures thereof, can be used. Among them,
A viscoelastic property having a small loss factor and a small friction coefficient is preferable from the viewpoint that running resistance is easily reduced. Also, by using the same rubber composition as the back cover rubber 4, it is possible to obtain the same rigidity as the back cover rubber. Further, the rubber composition is based on a blend rubber of natural rubber and polybutadiene rubber as described above, and a reinforcing agent such as carbon black and silica; a filler such as calcium carbonate and talc; It is obtained by appropriately kneading commonly used compounding agents such as an agent, a vulcanization accelerator, a plasticizer, an antioxidant, and a processing aid. Next, the tension member 3 bears a belt tension due to a conveyed object or running resistance, and mainly includes a canvas, a cord, and the like. The tension member 3 is bonded with RFL (resorcin formalin latex) when using a canvas, and when a cord is used, the cord is bonded with an adhesive rubber.
To be adhered to the front cover rubber and the back cover rubber. As in the present invention, particularly when a long-distance conveyor belt is used, it is preferable to use a steel cord as a tension member. As the adhesive rubber 6 in which the steel cord is embedded, a material used for a conventional conveyor belt can be used. For example, SBR 70 parts by weight, natural rubber 30 parts by weight, HAF carbon black 50
Parts by weight, aroma oil 10 parts by weight, stearic acid 1 part by weight, zinc oxide 5 parts by weight, antioxidant 6C 2 parts by weight, cobalt naphthenate 4 parts by weight, sulfur 2 parts by weight, vulcanization accelerator CZ 1 part by weight Formulations can be used. Also, the conveyor belt 1 according to the present invention comprises:
It can be manufactured by using the same manufacturing method as a conventional method for manufacturing a conveyor belt, and further, can be used in the same manner as in the related art. The present invention will now be described in further detail with reference to examples of conveyor belts according to the present invention and comparative examples. Based on the compounding table in Table 1, compounding agents such as base rubber, carbon black, oil, vulcanizing agent, etc. were charged into a Banbury mixer to obtain a kneaded rubber, and the kneaded rubber was passed through a calender roll to a thickness of 3 mm. A front and back cover rubber sheet and an adhesive rubber sheet were formed. Steel cord (7 × 7 6.1 mmφ) with zinc plating for rust prevention and adhesion between rollers of a belt forming machine consisting of two rollers
Are supplied side by side in the width direction at an interval of 12 mm, and one adhesive rubber sheet and two rubber sheets for front cover rubber are supplied above the steel cord, and adhesive rubber and two rubber sheets for back cover are supplied below the steel cord. Then, pressure was applied by a forming roller to form an unvulcanized steel cord conveyor belt formed body. Next, the above-mentioned steel cord conveyor belt molded product was supplied to a step press, and was heated and vulcanized under pressure at 145 ° C. for 45 minutes, and the unvulcanized portion was vulcanized by being fed in order. The width was 200 mm, the thickness was 18.4 mm, and the length was A belt conveyor belt having a length of 5 m (Examples 1 to 3 for evaluating running resistance and Comparative Examples 1 to 3) was produced. The following raw materials were used in the production of the above Examples and Comparative Examples. Natural rubber ... RSS # 3
(From Thailand). BR100: polybutadiene rubber, Mw /
Mn = 4.7 (manufactured by Ube Industries, Ltd.). BR360L: polybutadiene rubber, Mw / Mn = 2.4 (manufactured by Ube Industries, Ltd.). Nylon (polyamide-based synthetic fiber) short fiber 1 mm long (manufactured by Toray Industries, Inc.). HAF carbon black: Seast 3 (manufactured by Tokai Carbon Co., Ltd.). Aroma oil: JSR AROMA (manufactured by JSR Corporation). Stearic acid: Stearic acid (manufactured by Shin Nippon Rika Co., Ltd.). Zinc oxide: 3 types of zinc white (manufactured by Sakai Chemical Industry Co., Ltd.). Anti-aging agent: Antigen 6C (manufactured by Sumitomo Chemical Co., Ltd.). Microcrystalline wax: Suntight (manufactured by Seiko Chemical Co., Ltd.). Sulfur: powdered sulfur (produced by Hosoi Chemical Industry Co., Ltd.). Vulcanization accelerator ...
Noxeller CZ (Ouchi Shinko Chemical Industry Co., Ltd.). The end portions of the obtained belt-shaped conveyor belts were joined to form an endless evaluation belt, which was attached to a running resistance tester shown in FIG. 2 to measure running resistance. That is, at the center between the head pulley A and the tail pulley A ', a load of 5 kg is applied to the belt E by a pair of load rollers B, B connected by a bearing roller B'.
When the vehicle travels at a speed of 0 m / min, the traveling resistance received by the roller C supported by the slide table F provided on the opposite side of the load roller B is reduced by the load cell D (Kyowaden) installed adjacent to the slide table F. (LM-100KA manufactured by Sangyo Co., Ltd.). The results measured as described above were expressed as an index with the running resistance of a conventional conveyor belt (Comparative Example 2) having a cover material using only natural rubber as a base rubber, as 100. The results are shown in the lower part of Table 1. [Table 1] As shown in Table 1, the back cover rubber has a polybutadiene rubber (BR3) having a molecular weight distribution of 2.5 or less.
60L) and natural rubber (NR) in weight ratio (NR / BR)
By using a rubber composition based on a blend rubber of 80/20 to 30/70, the running resistance can be reduced to 10 to 2
It can be reduced by about 5%, and the meandering amount can be kept within 10 mm. As described above, according to the conveyor belt of the present invention, a rubber composition comprising a rubber obtained by blending polybutadiene rubber having a narrow molecular weight distribution and natural rubber at a specific compounding ratio is used as a base rubber. By using, the running resistance is low and the running stability is good.

【図面の簡単な説明】 【図1】本発明に係るコンベヤベルトの断面図。 【図2】実施例において使用した走行抵抗測定装置の概
念図。 【符号の説明】 1…コンベヤベルト、2…表カバーゴム、3・・・張力
体、4・・・裏カバーゴム、6…接着ゴム
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a conveyor belt according to the present invention. FIG. 2 is a conceptual diagram of a running resistance measuring device used in the embodiment. [Description of Signs] 1 ... Conveyor belt, 2 ... Front cover rubber, 3 ... Tension body, 4 ... Back cover rubber, 6 ... Adhesive rubber

Claims (1)

【特許請求の範囲】 【請求項1】 張力体の表裏両面にカバーゴムを設けた
コンベヤベルトにおいて、少なくとも裏カバーゴムが、
天然ゴムと、GPC法による分子量分布(Mw/Mn)
が2.5以下のポリブタジエンゴムとを重量比率が80
/20〜30/70でブレンドしたゴムをベースとする
ゴム組成物からなることを特徴とするコンベヤベルト。
Claims: 1. A conveyor belt provided with a cover rubber on both sides of a tension member, wherein at least the back cover rubber has:
Natural rubber and molecular weight distribution (Mw / Mn) by GPC method
Is 2.5 or less and a polybutadiene rubber having a weight ratio of 80
A conveyor belt comprising a rubber composition based on rubber blended in a ratio of / 20 to 30/70.
JP2001236607A 2001-08-03 2001-08-03 Conveyer belt Pending JP2003048609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001236607A JP2003048609A (en) 2001-08-03 2001-08-03 Conveyer belt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001236607A JP2003048609A (en) 2001-08-03 2001-08-03 Conveyer belt

Publications (1)

Publication Number Publication Date
JP2003048609A true JP2003048609A (en) 2003-02-21

Family

ID=19067838

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009040815A (en) * 2007-08-07 2009-02-26 Yokohama Rubber Co Ltd:The Coat rubber composition for conveyor belt
JP2009298542A (en) * 2008-06-12 2009-12-24 Bridgestone Corp Rubber composition for conveyor belt
JP2015215308A (en) * 2014-05-13 2015-12-03 横浜ゴム株式会社 Method and apparatus for measuring travel resistance force of conveyer belt
JP2015215307A (en) * 2014-05-13 2015-12-03 横浜ゴム株式会社 Method for measuring travel resistance force of conveyer belt
CN115612186A (en) * 2022-10-19 2023-01-17 吴善聪 Preparation method of coating adhesive material on ultrahigh wear-resistant anti-tearing conveying belt

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009040815A (en) * 2007-08-07 2009-02-26 Yokohama Rubber Co Ltd:The Coat rubber composition for conveyor belt
JP2009298542A (en) * 2008-06-12 2009-12-24 Bridgestone Corp Rubber composition for conveyor belt
JP2015215308A (en) * 2014-05-13 2015-12-03 横浜ゴム株式会社 Method and apparatus for measuring travel resistance force of conveyer belt
JP2015215307A (en) * 2014-05-13 2015-12-03 横浜ゴム株式会社 Method for measuring travel resistance force of conveyer belt
CN115612186A (en) * 2022-10-19 2023-01-17 吴善聪 Preparation method of coating adhesive material on ultrahigh wear-resistant anti-tearing conveying belt

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