JP2011178917A - Rubber composition for heat resistant conveyer belt and heat resistant conveyer belt - Google Patents
Rubber composition for heat resistant conveyer belt and heat resistant conveyer belt Download PDFInfo
- Publication number
- JP2011178917A JP2011178917A JP2010045365A JP2010045365A JP2011178917A JP 2011178917 A JP2011178917 A JP 2011178917A JP 2010045365 A JP2010045365 A JP 2010045365A JP 2010045365 A JP2010045365 A JP 2010045365A JP 2011178917 A JP2011178917 A JP 2011178917A
- Authority
- JP
- Japan
- Prior art keywords
- ethylene
- heat
- rubber composition
- resistant conveyor
- conveyor belt
- 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.)
- Granted
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 62
- 239000005060 rubber Substances 0.000 title claims abstract description 62
- 239000000203 mixture Substances 0.000 title claims abstract description 46
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000005977 Ethylene Substances 0.000 claims abstract description 37
- 239000004711 α-olefin Substances 0.000 claims abstract description 26
- 238000002844 melting Methods 0.000 claims abstract description 24
- 230000008018 melting Effects 0.000 claims abstract description 24
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims abstract description 23
- 229920001577 copolymer Polymers 0.000 claims description 29
- VXNZUUAINFGPBY-UHFFFAOYSA-N ethyl ethylene Natural products CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims description 8
- 230000032683 aging Effects 0.000 abstract description 14
- 239000000126 substance Substances 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000011162 core material Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 244000043261 Hevea brasiliensis Species 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- 239000005062 Polybutadiene Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 4
- 229920001194 natural rubber Polymers 0.000 description 4
- 229920002857 polybutadiene Polymers 0.000 description 4
- 102100028215 BTB/POZ domain-containing protein KCTD7 Human genes 0.000 description 3
- 101001007222 Homo sapiens BTB/POZ domain-containing protein KCTD7 Proteins 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000003712 anti-aging effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 208000023353 progressive myoclonic epilepsy type 3 Diseases 0.000 description 3
- 208000027071 progressive myoclonus epilepsy 3 Diseases 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102100026891 Cystatin-B Human genes 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 241001441571 Hiodontidae Species 0.000 description 1
- 101000912191 Homo sapiens Cystatin-B Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 208000033255 Progressive myoclonic epilepsy type 1 Diseases 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Belt Conveyors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本発明は、耐熱コンベヤベルト用ゴム組成物および耐熱コンベヤベルトに関する。 The present invention relates to a heat-resistant conveyor belt rubber composition and a heat-resistant conveyor belt.
耐熱コンベヤベルト用ゴム組成物として、特許文献１には、「エチレン・１−オクテン共重合体とエチレン・プロピレン共重合体とを含有するゴム組成物」が記載されている（請求項１等を参照）。
このようなゴム組成物を用いた耐熱コンベヤベルトは、エチレン・プロピレン共重合体のみをゴム成分とするゴム組成物を用いた従来の耐熱コンベヤベルトと比べて、耐熱老化性等の諸性能に優れるとされている（段落０００４，００４１，００４２，００４４等を参照）。
As a rubber composition for heat-resistant conveyor belts, Patent Document 1 describes “a rubber composition containing an ethylene / 1-octene copolymer and an ethylene / propylene copolymer” (claim 1 and the like). reference).
The heat-resistant conveyor belt using such a rubber composition is superior in various performances such as heat aging resistance as compared with a conventional heat-resistant conveyor belt using a rubber composition containing only an ethylene / propylene copolymer as a rubber component. (See paragraphs 0004, 0041, 0042, 0044, etc.).
本発明者は、特許文献１に記載されたゴム組成物について検討を行ったところ、耐熱老化性には優れるものの、切断時伸びが劣ることを明らかにした。 The inventor examined the rubber composition described in Patent Document 1 and found that although the heat aging resistance was excellent, the elongation at break was inferior.
そこで、本発明は、優れた耐熱老化性を維持し、切断時伸びも良好な耐熱コンベヤベルト用ゴム組成物を提供することを目的とする。 Accordingly, an object of the present invention is to provide a rubber composition for a heat-resistant conveyor belt that maintains excellent heat aging resistance and has good elongation at break.
本発明者は、上記課題を解決するために鋭意検討した結果、融点が４０℃以下のエチレン・α−オレフィン共重合体を用いることにより、意外にもエチレン・プロピレン共重合体を用いなくても、耐熱コンベヤベルト用ゴム組成物が、優れた耐熱老化性を維持しつつ、切断時伸びに優れることを見出し、本発明を完成させた。
すなわち、本発明は、以下の（１）〜（４）を提供する。
As a result of intensive studies to solve the above problems, the present inventor unexpectedly uses no ethylene / propylene copolymer by using an ethylene / α-olefin copolymer having a melting point of 40 ° C. or lower. The present inventors have found that the rubber composition for heat-resistant conveyor belts is excellent in elongation at cutting while maintaining excellent heat aging resistance, and has completed the present invention.
That is, the present invention provides the following (1) to (4).
（１）融点４０℃以下のエチレン・α−オレフィン共重合体を含有する、耐熱コンベヤベルト用ゴム組成物。 (1) A rubber composition for a heat-resistant conveyor belt, comprising an ethylene / α-olefin copolymer having a melting point of 40 ° C. or lower.
（２）エチレン含有量６０〜８０質量％のエチレン・プロピレン共重合体をさらに含有し、上記エチレン・α−オレフィン共重合体と上記エチレン・プロピレン共重合体との質量比（エチレン・α−オレフィン共重合体／エチレン・プロピレン共重合体）が、１０／９０〜９０／１０である、上記（１）に記載の耐熱コンベヤベルト用ゴム組成物。 (2) An ethylene / propylene copolymer having an ethylene content of 60 to 80% by mass is further contained, and a mass ratio of the ethylene / α-olefin copolymer to the ethylene / propylene copolymer (ethylene / α-olefin). The rubber composition for heat-resistant conveyor belts according to (1) above, wherein the copolymer / ethylene / propylene copolymer is 10/90 to 90/10.
（３）上記エチレン・α−オレフィン共重合体が、融点４０℃以下のエチレン・１−ブテン共重合体である、上記（１）または（２）に記載の耐熱コンベヤベルト用ゴム組成物。 (3) The rubber composition for heat-resistant conveyor belts according to (1) or (2) above, wherein the ethylene / α-olefin copolymer is an ethylene / 1-butene copolymer having a melting point of 40 ° C. or lower.
（４）上記（１）〜（３）のいずれかに記載の耐熱コンベヤベルト用ゴム組成物を用いる耐熱コンベヤベルト。 (4) A heat-resistant conveyor belt using the rubber composition for a heat-resistant conveyor belt according to any one of (1) to (3).
本発明によれば、優れた耐熱老化性を維持し切断時伸びも良好な耐熱コンベヤベルト用ゴム組成物を提供することができる。 According to the present invention, it is possible to provide a rubber composition for a heat-resistant conveyor belt that maintains excellent heat aging resistance and has good elongation at cutting.
本発明の耐熱コンベヤベルト用ゴム組成物（以下、「本発明のゴム組成物」ともいう。）は、融点４０℃以下のエチレン・α−オレフィン共重合体を含有する耐熱コンベヤベルト用ゴム組成物である。以下、本発明のゴム組成物に含有される各成分について説明する。 The rubber composition for heat-resistant conveyor belts of the present invention (hereinafter also referred to as “the rubber composition of the present invention”) comprises an ethylene / α-olefin copolymer having a melting point of 40 ° C. or lower. It is. Hereinafter, each component contained in the rubber composition of the present invention will be described.
＜エチレン・α−オレフィン共重合体＞
本発明のゴム組成物が含有するエチレン・α−オレフィン共重合体は、その融点が４０℃以下であり、３５℃以下であることが好ましい。融点がこの範囲であるエチレン・α−オレフィン共重合体を含有するゴム組成物は、耐熱老化性を維持しつつ、切断時伸びにも優れる。これは、融点が４０℃超であると伸長時の結晶化が速く進行するのに対して、融点が４０℃以下であれば伸長時に結晶化しにくくなるからであると考えられる。
また、上記エチレン・α−オレフィン共重合体の融点は、分子間の凝集エネルギーが小さくなりすぎず、本発明のゴム組成物の常態物性（引張強さ（ＴＢ））が優れるという理由から、２０℃以上であることが好ましく、２５℃以上であることがより好ましい。
<Ethylene / α-olefin copolymer>
The ethylene / α-olefin copolymer contained in the rubber composition of the present invention has a melting point of 40 ° C. or lower and preferably 35 ° C. or lower. A rubber composition containing an ethylene / α-olefin copolymer having a melting point in this range is excellent in elongation at break while maintaining heat aging resistance. This is considered to be because when the melting point is higher than 40 ° C., crystallization at the time of elongation proceeds rapidly, whereas when the melting point is 40 ° C. or less, it is difficult to crystallize at the time of elongation.
The melting point of the ethylene / α-olefin copolymer is 20 because the cohesive energy between molecules does not become too small, and the normal physical properties (tensile strength (TB)) of the rubber composition of the present invention are excellent. Preferably, the temperature is higher than or equal to 25 ° C., more preferably higher than or equal to 25 ° C.
上記エチレン・α−オレフィン共重合体としては、そのエチレン含有量や分子量等を調整することにより融点が４０℃以下になるものであれば、特に限定されず、例えば、共重合体中のα−オレフィンが、１−ブテン、１−ペンテン、１−ヘキセン、１−オクテン等であるものが挙げれ、中でも、共重合体中のα−オレフィンが１−ブテンであるものが好ましい。 The ethylene / α-olefin copolymer is not particularly limited as long as it has a melting point of 40 ° C. or less by adjusting the ethylene content, molecular weight, and the like. For example, α-olefin in the copolymer Examples of the olefin include 1-butene, 1-pentene, 1-hexene, 1-octene and the like, and among them, the α-olefin in the copolymer is preferably 1-butene.
なお、特許文献１の段落００３４に開示されているエチレン・１−オクテン共重合体（商品名「Ｅｎｇａｇｅ ８１８０」）の融点は、４７℃である。 The melting point of the ethylene / 1-octene copolymer (trade name “Engage 8180”) disclosed in paragraph 0034 of Patent Document 1 is 47 ° C.
このような融点が４０℃以下のエチレン・α−オレフィン共重合体の市販品としては、例えば、エチレン・１−ブテン共重合体であるダウケミカル社製の「Ｅｎｇａｇｅ ７４６７」等が挙げられる。 Examples of such commercially available ethylene / α-olefin copolymers having a melting point of 40 ° C. or less include “Engage 7467” manufactured by Dow Chemical Co., which is an ethylene / 1-butene copolymer.
＜エチレン・プロピレン共重合体＞
本発明のゴム組成物は、引張強さをより良好にできるという理由から、さらに、エチレン含有量６０〜８０質量％以上のエチレン・プロピレン共重合体を含有してもよい。
<Ethylene / propylene copolymer>
The rubber composition of the present invention may further contain an ethylene / propylene copolymer having an ethylene content of 60 to 80% by mass or more because the tensile strength can be further improved.
上記エチレン・α−オレフィン共重合体と上記エチレン・プロピレン共重合体との質量比（エチレン・α−オレフィン共重合体／エチレン・プロピレン共重合体）は、引張強さと切断時伸びとのバランスという観点から、１０／９０〜９０／１０であることが好ましく、特に、ゴム組成物が加工性に優れるという理由から、４０／６０〜９０／１０であることがより好ましい。 The mass ratio between the ethylene / α-olefin copolymer and the ethylene / propylene copolymer (ethylene / α-olefin copolymer / ethylene / propylene copolymer) is a balance between tensile strength and elongation at break. From the viewpoint, it is preferably 10/90 to 90/10, and more preferably 40/60 to 90/10, particularly because the rubber composition is excellent in processability.
上記エチレン・プロピレン共重合体におけるエチレン含有量は、加工性の観点から、６０〜７５質量％であることが好ましく、６０〜７０質量％であることがより好ましい。 The ethylene content in the ethylene / propylene copolymer is preferably 60 to 75 mass%, more preferably 60 to 70 mass%, from the viewpoint of processability.
本発明のゴム組成物は、上記各成分のほかに、本発明の目的を損なわない範囲で、一般的に用いられるカーボンブラック、亜鉛華、ステアリン酸、老化防止剤、オイル、可塑剤、架橋剤等の添加剤を含有することができる。これらの添加剤の含有量は、本発明の目的を損なわない範囲で適宜決めることができる。 The rubber composition of the present invention is a carbon black, zinc oxide, stearic acid, anti-aging agent, oil, plasticizer, cross-linking agent that is generally used within the range not impairing the object of the present invention, in addition to the above components. Etc. can be contained. The content of these additives can be appropriately determined within a range that does not impair the object of the present invention.
本発明のゴム組成物の製造は、公知の条件・方法により行うことができる。例えば、本発明のゴム組成物は、上記エチレン・α−オレフィン共重合体、上記エチレン・プロピレン共重合体、および、必要に応じて含有する添加剤を、バンバリーミキサー、ニーダー、ロール等を用いて混合し、製造することができる。 The rubber composition of the present invention can be produced by known conditions and methods. For example, the rubber composition of the present invention uses the above-mentioned ethylene / α-olefin copolymer, the ethylene / propylene copolymer, and, if necessary, an additive containing a Banbury mixer, a kneader, a roll, or the like. Can be mixed and manufactured.
次に、本発明の耐熱コンベヤベルトについて説明する。
本発明の耐熱コンベヤベルトは、本発明のゴム組成物を用いた耐熱コンベヤベルトである。その形状、製造方法等は公知の耐熱コンベヤベルトと同様である。
本発明の耐熱コンベヤベルトの具体的な構成としては、例えば、下記に示すようなものが挙げられる。
Next, the heat resistant conveyor belt of the present invention will be described.
The heat resistant conveyor belt of the present invention is a heat resistant conveyor belt using the rubber composition of the present invention. Its shape, manufacturing method, etc. are the same as those of a known heat-resistant conveyor belt.
Specific examples of the heat resistant conveyor belt according to the present invention include the following.
本発明の耐熱コンベヤベルトの第１の実施形態を図１を用いて説明する。
図１は、本発明の耐熱コンベヤベルトの一実施形態の断面図である。図１に示すように、本発明の耐熱コンベヤベルトの第１の実施形態は、帆布１をコートゴム（接着ゴム）２で被覆して芯材層とし、その外周を上述した本発明のゴム組成物からなるカバーゴム３でカバーした耐熱コンベヤベルト４である。
図１の耐熱コンベヤベルト４は、ナイロン、ビニロン、ポリエステル等の合成繊維の織布よりなる帆布１を芯材とするものであり、帆布１の積層枚数、カバーゴム３の厚さやベルト幅等は使用目的に応じて適宜決定されるが、カバーゴム３の厚さＴ１、Ｔ２は通常の場合、１．５〜２０ｍｍ程度とされる。
A first embodiment of the heat-resistant conveyor belt of the present invention will be described with reference to FIG.
FIG. 1 is a cross-sectional view of an embodiment of the heat-resistant conveyor belt of the present invention. As shown in FIG. 1, in the first embodiment of the heat-resistant conveyor belt of the present invention, the canvas 1 is covered with a coat rubber (adhesive rubber) 2 to form a core material layer, and the outer periphery of the rubber composition of the present invention described above. A heat-resistant conveyor belt 4 covered with a cover rubber 3 made of
The heat-resistant conveyor belt 4 in FIG. 1 has a canvas 1 made of a woven fabric of synthetic fibers such as nylon, vinylon, polyester, etc. as a core material. The number of laminated canvases 1, the thickness of the cover rubber 3, the belt width, etc. Although it is determined appropriately according to the purpose of use, the thicknesses T 1 and T 2 of the cover rubber 3 are usually about 1.5 to 20 mm.
また、コートゴム２は、公知の耐熱コンベヤベルトに用いられているコートゴムを使用でき、例えば、天然ゴム（ＮＲ）、アクリロニトリルブタジエンゴム（ＮＢＲ）、スチレン−ブタジエンゴム（ＳＢＲ）、ブタジエンゴム（ＢＲ）等をゴム成分とするゴム組成物が使用できる。 The coat rubber 2 may be a coat rubber used in a known heat-resistant conveyor belt, such as natural rubber (NR), acrylonitrile butadiene rubber (NBR), styrene-butadiene rubber (SBR), butadiene rubber (BR), etc. A rubber composition containing as a rubber component can be used.
次に、本発明の耐熱コンベヤベルトの第２の実施形態を図２を用いて説明する。
図２は、本発明の耐熱コンベヤベルトの他の一実施形態の断面図である。
図２に示すように、本発明の耐熱コンベヤベルトの第２の実施形態は、スチールコード５をクッションゴム（接着ゴム）６で被覆して芯材層とし、その外周を上述した本発明のゴム組成物からなるカバーゴム７でカバーした耐熱コンベヤベルト８である。
図２の耐熱コンベヤベルト８は、直径０．２〜０．４ｍｍ程度の素線を複数本撚り合わせて直径２．０〜９．５ｍｍ程度のワイヤロープとしたスチールコード５を５０〜２３０本程度並列させて芯材とするものであり、一般に、耐熱コンベヤベルト８の総厚みＴは１０〜５０ｍｍ程度とされる。
また、クッションゴム６は、例えば、公知のスチールコンベヤベルトに用いられている亜鉛メッキスチールコードに接着可能な接着ゴムを使用することができ、具体的には、天然ゴム（ＮＲ）、アクリロニトリルブタジエンゴム（ＮＢＲ）、スチレン−ブタジエンゴム（ＳＢＲ）、ブタジエンゴム（ＢＲ）等をゴム成分とするゴム組成物が使用できる。
Next, 2nd Embodiment of the heat-resistant conveyor belt of this invention is described using FIG.
FIG. 2 is a cross-sectional view of another embodiment of the heat-resistant conveyor belt of the present invention.
As shown in FIG. 2, in the second embodiment of the heat-resistant conveyor belt of the present invention, the steel cord 5 is covered with a cushion rubber (adhesive rubber) 6 to form a core material layer, and the outer periphery of the rubber of the present invention described above. A heat-resistant conveyor belt 8 covered with a cover rubber 7 made of the composition.
The heat-resistant conveyor belt 8 shown in FIG. 2 has about 50 to 230 steel cords 5 in which a plurality of strands having a diameter of about 0.2 to 0.4 mm are twisted to form a wire rope having a diameter of about 2.0 to 9.5 mm. The core material is formed in parallel. Generally, the total thickness T of the heat-resistant conveyor belt 8 is about 10 to 50 mm.
Further, as the cushion rubber 6, for example, an adhesive rubber that can be bonded to a galvanized steel cord used in a known steel conveyor belt can be used. Specifically, natural rubber (NR), acrylonitrile butadiene rubber can be used. A rubber composition containing (NBR), styrene-butadiene rubber (SBR), butadiene rubber (BR) or the like as a rubber component can be used.
このような耐熱コンベヤベルトは、常法に従って、芯材となる帆布やスチールコードを本発明のゴム組成物で成形した未加硫のゴムシート間に介在させ、加熱加圧して加硫することにより容易に製造することができる。なお、加硫条件は、通常１２０〜１８０℃前後、０．１〜４．９ＭＰａ程度で１０〜９０分程度である。 Such a heat-resistant conveyor belt is obtained by interposing a canvas or steel cord as a core material between unvulcanized rubber sheets molded with the rubber composition of the present invention and vulcanizing by heating and pressurizing according to a conventional method. It can be manufactured easily. The vulcanization conditions are usually around 120 to 180 ° C., about 0.1 to 4.9 MPa, and about 10 to 90 minutes.
本発明の耐熱コンベヤベルトは、上述した本発明のゴム組成物を用いているので、耐熱老化性等に優れる。 Since the heat-resistant conveyor belt of the present invention uses the above-described rubber composition of the present invention, the heat-resistant conveyor belt is excellent in heat aging resistance and the like.
以下に実施例を挙げ、本発明のゴム組成物についてさらに説明する。なお、本発明は、これらに限定されるものではない。 The following examples further illustrate the rubber composition of the present invention. Note that the present invention is not limited to these.
（実施例１〜５、比較例１〜９）
下記第１表に示す各成分を、第１表に示す組成（質量部）で、バンバリーミキサーを用いて混合して分散させ、各組成物を得た。
得られた組成物を用いて、下記の試験方法により、未加硫物性、常態物性、老化物性、耐摩耗性、加工性を評価した。結果を第１表に示す。
(Examples 1-5, Comparative Examples 1-9)
Each component shown in Table 1 below was mixed and dispersed using the Banbury mixer at the composition (parts by mass) shown in Table 1 to obtain each composition.
Using the obtained composition, unvulcanized physical properties, normal physical properties, aging physical properties, wear resistance, and workability were evaluated by the following test methods. The results are shown in Table 1.
＜未加硫物性＞
各例に係る未加硫のゴム組成物について、ムーニー粘度、スコーチタイム、Ｔ９５を下記に示す方法で測定した。結果を第１表に示す。
・ムーニー粘度［ＭＬ（１＋４）１００℃］：ＪＩＳ Ｋ６３００−１：２００１に準拠して、Ｌ形ロータを使用し、予熱時間１分、試験温度１００℃の条件で、測定した。
・スコーチタイム［ｍｉｎ］：ＪＩＳ Ｋ６３００−１：２００１に準拠して、温度１２５℃にて粘度が５ムーニー単位上昇する時間を測定した。
・Ｔ９５［ｍｉｎ］：ＪＩＳ Ｋ６３００−２：２００１に準拠して、温度１６０℃にて９５％加硫度に到達する時間を測定し、Ｔ９５とした。
<Unvulcanized physical properties>
About the unvulcanized rubber composition which concerns on each example, Mooney viscosity, scorch time, and T95 were measured by the method shown below. The results are shown in Table 1.
Mooney viscosity [ML (1 + 4) 100 ° C.]: Measured using an L-shaped rotor in accordance with JIS K6300-1: 2001, with a preheating time of 1 minute and a test temperature of 100 ° C.
Scorch time [min]: Based on JIS K6300-1: 2001, the time for the viscosity to rise by 5 Mooney units at a temperature of 125 ° C. was measured.
T95 [min]: Based on JIS K6300-2: 2001, the time required to reach a 95% vulcanization degree at a temperature of 160 ° C. was measured and designated as T95.
＜常態物性＞
各例に係る加硫ゴムについて、硬度（Ｈｓ）、引張強さ（ＴＢ）、切断時伸び（ＥＢ）、引裂強さ（ＴＲ）を下記に示す方法で測定した。結果を第１表に示す。
・硬度（Ｈｓ）：ＪＩＳ Ｋ６２５３：１９９７に準拠して、スプリング式Ａ型硬さ試験機を用いて、２３℃での硬度を測定した。
・引張強さ（ＴＢ）［ＭＰａ］：ＪＩＳ Ｋ６２５１：２００４に準拠して、３号ダンベルにて２ｍｍシートを打抜いてサンプルとし、５００ｍｍ／分の引張速度にて測定した。
・切断時伸び（ＥＢ）［％］：ＪＩＳ Ｋ６２５１：２００４に準拠して、３号ダンベルにて２ｍｍシートを打抜いてサンプルとし、５００ｍｍ／分の引張速度にて測定した。
・引裂強さ（ＴＲ）［Ｎ／ｍｍ］：ＪＩＳ Ｋ６２５２：２００７に準拠し、クレセント形試験片にて測定した。
<Normal physical properties>
About the vulcanized rubber concerning each example, hardness (Hs), tensile strength (TB), elongation at break (EB), and tear strength (TR) were measured by the method shown below. The results are shown in Table 1.
Hardness (Hs): Based on JIS K6253: 1997, the hardness at 23 ° C. was measured using a spring type A hardness tester.
-Tensile strength (TB) [MPa]: Based on JIS K6251: 2004, a 2 mm sheet was punched out with a No. 3 dumbbell to obtain a sample, and the tensile strength was measured at 500 mm / min.
-Elongation at the time of cutting (EB) [%]: Based on JIS K6251: 2004, a 2 mm sheet was punched out with a No. 3 dumbbell to make a sample, and measured at a tensile speed of 500 mm / min.
Tear strength (TR) [N / mm]: Measured with a crescent test piece in accordance with JIS K6252: 2007.
＜老化物性＞
各例に係るゴム組成物について、１８０℃×１６８時間の耐熱老化試験を行った後、硬度（Ｈｓ）、引張強さ（ＴＢ）、切断時伸び（ＥＢ）を測定した。結果を第１表に示す。
また、１８０℃×１６８時間の耐熱老化試験の前後における、硬度変化率（ΔＨｓ）、引張強さ変化率（ΔＴＢ）、切断時伸び変化率（ΔＥＢ）を求めた。結果を第１表に示す。
<Aging physical properties>
The rubber composition according to each example was subjected to a heat aging test at 180 ° C. × 168 hours, and then measured for hardness (Hs), tensile strength (TB), and elongation at break (EB). The results are shown in Table 1.
Also, the rate of change in hardness (ΔHs), the rate of change in tensile strength (ΔTB), and the rate of change in elongation at break (ΔEB) before and after the heat aging test at 180 ° C. × 168 hours were determined. The results are shown in Table 1.
＜耐摩耗性（ＤＩＮ摩耗）＞
各例に係るゴム組成物について、１８０℃×１６８時間の耐熱老化試験前後で、ＪＩＳ Ｋ６２６４：２００５に準拠して、ＤＩＮ摩耗試験機を用いて室温下で摩耗試験を行い、摩耗量［ｍｍ３］を測定した。摩耗量が少ないほど耐摩耗性に優れる。結果を第１表に示す。
<Abrasion resistance (DIN wear)>
The rubber composition according to each example, before and after heat aging test of 180 ° C. × 168 hours, JIS K6264: in compliance with 2005 performs wear test at room temperature using a DIN abrasion tester, the wear amount [mm 3 ] Was measured. The smaller the amount of wear, the better the wear resistance. The results are shown in Table 1.
＜加工性＞
各例に係るゴム組成物について、ロール出し後のシート肌を観察し、シート肌の表面が平滑でつやのあるものを、加工性に優れるものとして「○」と評価し、シートにやや凸凹があるため表面につやがないものを加工性がわずかに劣るものの実施に影響を与えないものとして「△」と評価し、シート全体が波打つ状態で凸凹があるものを加工性に劣るものとして「×」と評価した。結果を第１表に示す。
<Processability>
For the rubber composition according to each example, the sheet skin after roll-out is observed, and the surface of the sheet skin is smooth and shiny, and is evaluated as “◯” as having excellent workability, and the sheet has a slight unevenness. Therefore, if the surface is not glossy, the processability is slightly inferior, but it is evaluated as “△” as not affecting the implementation, and the whole sheet is wavy and has unevenness, “×” It was evaluated. The results are shown in Table 1.
第１表中の各成分は、以下のものを使用した。
・ＥＢＭ１：融点３４℃のエチレン・１−ブテン共重合体、商品名「Ｅｎｇａｇｅ ７４６７」（ダウケミカル社製）
・ＥＢＭ２：融点５０℃のエチレン・１−ブテン共重合体、商品名「Ｅｎｇａｇｅ ７３８０」（ダウケミカル社製）
・ＥＯＭ：融点５５℃のエチレン・１−オクテン共重合体、商品名「Ｅｎｇａｇｅ ８１５０」（ダウケミカル社製）
・ＥＰＭ１：エチレン含有量５１．０質量％のエチレン・プロピレン共重合体、商品名「ＥＰＴ００４５」（三井化学社製）
・ＥＰＭ２：エチレン含有量５４．５質量％のエチレン・プロピレン共重合体、商品名「ＶＩＳＴＡＬＯＮ ５０３」（Ｅｘｘｏｎ Ｍｏｂｉｌ Ｃｈｅｍｉｃａｌ社製）
・ＥＰＭ３：エチレン含有量６５．０質量％のエチレン・プロピレン共重合体、商品名「ＶＩＳＴＡＬＯＮ ７０６」（Ｅｘｘｏｎ Ｍｏｂｉｌ Ｃｈｅｍｉｃａｌ社製）
・カーボンブラック：商品名「ニテロン＃３００」（新日化カーボン社製）
・亜鉛華：商品名「酸化亜鉛３種」（正同化学工業社製）
・ステアリン酸：商品名「ステアリン酸５０Ｓ」（千葉脂肪酸社製）
・老化防止剤１：商品名「ノクラックＭＭＢ」（大内新興化学工業社製）
・老化防止剤２：商品名「ノンフレックスＬＡＳ−Ｐ」（精工化学社製）
・オイル：商品名「ＳＵＮＰＡＲ ２２８０」（日本サン石油社製）
・可塑剤：商品名「ルーカント ＨＣ−３０００Ｘ」（三井化学社製）
・架橋剤１：商品名「パーカドックス１４−４０」（化薬アクゾ社製）
・架橋剤２：商品名「ハイクロスＧＴ」（精工化学社製）
The following were used for each component in Table 1.
EBM1: ethylene / 1-butene copolymer having a melting point of 34 ° C., trade name “Engage 7467” (manufactured by Dow Chemical Company)
EBM2: ethylene / 1-butene copolymer having a melting point of 50 ° C., trade name “Engage 7380” (manufactured by Dow Chemical Company)
EOM: ethylene / 1-octene copolymer having a melting point of 55 ° C., trade name “engage 8150” (manufactured by Dow Chemical)
EPM1: ethylene / propylene copolymer having an ethylene content of 51.0% by mass, trade name “EPT0045” (manufactured by Mitsui Chemicals)
EPM2: ethylene / propylene copolymer having an ethylene content of 54.5% by mass, trade name “VISTALON 503” (manufactured by Exxon Mobile Chemical)
EPM3: ethylene / propylene copolymer having an ethylene content of 65.0% by mass, trade name “VISTALON 706” (manufactured by Exxon Mobile Chemical)
・ Carbon black: Product name “Niteron # 300” (manufactured by Nippon Kayaku Carbon)
・ Zinc flower: Trade name "Zinc oxide 3 types" (manufactured by Shodo Chemical Industry Co., Ltd.)
・ Stearic acid: Trade name “Stearic acid 50S” (Chiba Fatty Acid Co., Ltd.)
Anti-aging agent 1: Trade name “NOCRACK MMB” (manufactured by Ouchi Shinsei Chemical Co., Ltd.)
Anti-aging agent 2: Trade name “Nonflex LAS-P” (manufactured by Seiko Chemical Co., Ltd.)
・ Oil: Trade name “SUNPAR 2280” (manufactured by Nippon Oil Corporation)
・ Plasticizer: Trade name “Lucanto HC-3000X” (Mitsui Chemicals)
・ Crosslinking agent 1: Trade name “Parkadox 14-40” (manufactured by Kayaku Akzo)
・ Crosslinking agent 2: Trade name “Hicross GT” (manufactured by Seiko Chemical Co., Ltd.)
第１表に示す結果から、融点が３４℃であるＥＢＭ１を含有する実施例１〜５は、引張強さ（ＴＢ）および切断時伸び（ＥＢ）がともに良好（ＴＢ≧１４、ＥＢ≧６００）であり、優れた耐熱老化性も有することが分かった。
また、実施例２〜５を見ると、エチレン含有量が６５．０質量％であるＥＰＭ３との併用系にすることで、良好な切断時伸びを維持しつつ、引張強さをより良好にできることが分かった。
さらに、実施例２〜５のような併用系においては、ＥＰＭ３の質量比が相対的に低いほど、加工性が良好になることが分かった。
From the results shown in Table 1, Examples 1 to 5 containing EBM1 having a melting point of 34 ° C. have good tensile strength (TB) and elongation at break (EB) (TB ≧ 14, EB ≧ 600). It was also found that it has excellent heat aging resistance.
In addition, when Examples 2 to 5 are seen, the tensile strength can be improved while maintaining good elongation at break by using a combined system with EPM3 having an ethylene content of 65.0% by mass. I understood.
Furthermore, in the combined system like Examples 2-5, it turned out that workability becomes favorable, so that the mass ratio of EPM3 is relatively low.
これに対して、比較例１〜６では、切断時伸び（ＥＢ）が劣る（ＥＢ＜６００）ことが分かった。
また、比較例７，８では、切断時伸びは比較的良好であるものの、引張強さ（ＴＢ）に劣る（ＴＢ＜１４）ことが分かった。
さらに、比較例９では、引張強さおよび切断時伸びは比較的良好であるものの、加工性に劣ることが分かった。
On the other hand, in Comparative Examples 1-6, it turned out that elongation at the time of cutting (EB) is inferior (EB <600).
In Comparative Examples 7 and 8, it was found that although the elongation at break was relatively good, the tensile strength (TB) was inferior (TB <14).
Further, in Comparative Example 9, it was found that the tensile strength and elongation at break were relatively good, but the workability was poor.
ここで、図２は、実施例１〜５と比較例１〜６とについて、エチレン・α−オレフィン共重合体の融点と切断時伸び（ＥＢ）との関係を示すグラフである。
図２のグラフからは、エチレン・α−オレフィン共重合体の融点が４０℃を超える範囲においては、融点が５５℃から５０℃に下降したとしても、ＥＢの値が上昇するという傾向は見られない。
しかしながら、図２のグラフからは、エチレン・α−オレフィン共重合体の融点を４０℃以下（３４℃）にすると、ＥＢの値が顕著に上昇することが分かる。
Here, FIG. 2 is a graph showing the relationship between the melting point of the ethylene / α-olefin copolymer and the elongation at break (EB) for Examples 1 to 5 and Comparative Examples 1 to 6.
From the graph of FIG. 2, in the range where the melting point of the ethylene / α-olefin copolymer exceeds 40 ° C., even if the melting point decreases from 55 ° C. to 50 ° C., there is a tendency that the value of EB increases. Absent.
However, it can be seen from the graph of FIG. 2 that when the melting point of the ethylene / α-olefin copolymer is 40 ° C. or lower (34 ° C.), the value of EB increases remarkably.
１ 帆布
２ コートゴム
３，７ カバーゴム
４，８ 耐熱コンベヤベルト
５ スチールコード
６ クッションゴム
DESCRIPTION OF SYMBOLS 1 Canvas 2 Coat rubber 3, 7 Cover rubber 4, 8 Heat-resistant conveyor belt 5 Steel cord 6 Cushion rubber
Claims (4)
前記エチレン・α−オレフィン共重合体と前記エチレン・プロピレン共重合体との質量比（エチレン・α−オレフィン共重合体／エチレン・プロピレン共重合体）が、１０／９０〜９０／１０である、請求項１に記載の耐熱コンベヤベルト用ゴム組成物。 It further contains an ethylene / propylene copolymer having an ethylene content of 60 to 80% by mass,
The mass ratio of the ethylene / α-olefin copolymer and the ethylene / propylene copolymer (ethylene / α-olefin copolymer / ethylene / propylene copolymer) is 10/90 to 90/10, The rubber composition for heat-resistant conveyor belts according to claim 1.
The heat-resistant conveyor belt using the rubber composition for heat-resistant conveyor belts in any one of Claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010045365A JP5625391B2 (en) | 2010-03-02 | 2010-03-02 | Rubber composition for heat-resistant conveyor belt and heat-resistant conveyor belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010045365A JP5625391B2 (en) | 2010-03-02 | 2010-03-02 | Rubber composition for heat-resistant conveyor belt and heat-resistant conveyor belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011178917A true JP2011178917A (en) | 2011-09-15 |
| JP5625391B2 JP5625391B2 (en) | 2014-11-19 |
Family
ID=44690774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010045365A Active JP5625391B2 (en) | 2010-03-02 | 2010-03-02 | Rubber composition for heat-resistant conveyor belt and heat-resistant conveyor belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5625391B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014119625A1 (en) * | 2013-01-29 | 2014-08-07 | 横浜ゴム株式会社 | Rubber composition for heat-resistant conveyor belts, and heat-resistant conveyor belt |
| JP2014181265A (en) * | 2013-03-18 | 2014-09-29 | Bridgestone Corp | Rubber composition for conveyor belt, conveyor belt and belt conveyor |
| CN104109423A (en) * | 2013-04-18 | 2014-10-22 | 横滨橡胶株式会社 | Coating rubber composition used for conveyer belt, laminate body, and conveyer belt |
| WO2016013486A1 (en) * | 2014-07-25 | 2016-01-28 | 横浜ゴム株式会社 | Rubber composition for heat-resistant conveyor belts and heat-resistant conveyor belt |
| JPWO2014103619A1 (en) * | 2012-12-26 | 2017-01-12 | 三井化学東セロ株式会社 | Release film and method for producing the same |
| US20170362474A1 (en) * | 2014-12-05 | 2017-12-21 | The Yokohama Rubber Co., Ltd. | Bonding Method and Conveyor Belt |
| KR20210084551A (en) * | 2018-11-28 | 2021-07-07 | 요코하마 고무 가부시키가이샤 | Rubber composition for conveyor belts and conveyor belts |
| CN113174103A (en) * | 2020-01-27 | 2021-07-27 | 横滨橡胶株式会社 | Rubber composition and conveyor belt |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0260950A (en) * | 1988-08-29 | 1990-03-01 | Mitsui Petrochem Ind Ltd | Rubber composition |
| JPH0859924A (en) * | 1994-08-24 | 1996-03-05 | Yokohama Rubber Co Ltd:The | Rubber composition for heat-resistant converter belt |
| JPH10168257A (en) * | 1996-10-09 | 1998-06-23 | Tokai Rubber Ind Ltd | Rubber composition for thermally resistant conveyor belt |
| JPH11246017A (en) * | 1998-03-06 | 1999-09-14 | Bridgestone Corp | Heat-resisting belt |
| JP2005036169A (en) * | 2003-07-17 | 2005-02-10 | Riken Technos Corp | Thermoplastic elastomer composition |
| JP2009030728A (en) * | 2007-07-27 | 2009-02-12 | Bando Chem Ind Ltd | Friction transmission belt and belt transmission device for driving auxiliary machine of automobile using it |
-
2010
- 2010-03-02 JP JP2010045365A patent/JP5625391B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0260950A (en) * | 1988-08-29 | 1990-03-01 | Mitsui Petrochem Ind Ltd | Rubber composition |
| JPH0859924A (en) * | 1994-08-24 | 1996-03-05 | Yokohama Rubber Co Ltd:The | Rubber composition for heat-resistant converter belt |
| JPH10168257A (en) * | 1996-10-09 | 1998-06-23 | Tokai Rubber Ind Ltd | Rubber composition for thermally resistant conveyor belt |
| JPH11246017A (en) * | 1998-03-06 | 1999-09-14 | Bridgestone Corp | Heat-resisting belt |
| JP2005036169A (en) * | 2003-07-17 | 2005-02-10 | Riken Technos Corp | Thermoplastic elastomer composition |
| JP2009030728A (en) * | 2007-07-27 | 2009-02-12 | Bando Chem Ind Ltd | Friction transmission belt and belt transmission device for driving auxiliary machine of automobile using it |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI621515B (en) * | 2012-12-26 | 2018-04-21 | 三井化學東賽璐股份有限公司 | Mold release film and method for manufacturing the same |
| JPWO2014103619A1 (en) * | 2012-12-26 | 2017-01-12 | 三井化学東セロ株式会社 | Release film and method for producing the same |
| WO2014119625A1 (en) * | 2013-01-29 | 2014-08-07 | 横浜ゴム株式会社 | Rubber composition for heat-resistant conveyor belts, and heat-resistant conveyor belt |
| CN104936873A (en) * | 2013-01-29 | 2015-09-23 | 横滨橡胶株式会社 | Rubber composition for heat-resistant conveyor belts, and heat-resistant conveyor belt |
| JP5850183B2 (en) * | 2013-01-29 | 2016-02-03 | 横浜ゴム株式会社 | Rubber composition for heat-resistant conveyor belt and heat-resistant conveyor belt |
| US9359495B2 (en) | 2013-01-29 | 2016-06-07 | The Yokohama Rubber Co., Ltd. | Rubber composition for heat resistant conveyor belts, and heat-resistant conveyor belt |
| JP2014181265A (en) * | 2013-03-18 | 2014-09-29 | Bridgestone Corp | Rubber composition for conveyor belt, conveyor belt and belt conveyor |
| CN104109423A (en) * | 2013-04-18 | 2014-10-22 | 横滨橡胶株式会社 | Coating rubber composition used for conveyer belt, laminate body, and conveyer belt |
| JP2014210640A (en) * | 2013-04-18 | 2014-11-13 | 横浜ゴム株式会社 | Coat rubber composition for conveyor belt, laminate and conveyor belt |
| CN104109423B (en) * | 2013-04-18 | 2017-07-21 | 横滨橡胶株式会社 | Coating rubber composition used for conveyer belt, laminated body and conveyer belt |
| KR20170023132A (en) | 2014-07-25 | 2017-03-02 | 요코하마 고무 가부시키가이샤 | Rubber composition for heat-resistant conveyor belts and heat-resistant conveyor belt |
| CN106574086A (en) * | 2014-07-25 | 2017-04-19 | 横滨橡胶株式会社 | Rubber composition for heat-resistant conveyor belts and heat-resistant conveyor belt |
| JP5854095B1 (en) * | 2014-07-25 | 2016-02-09 | 横浜ゴム株式会社 | Rubber composition for heat-resistant conveyor belt and heat-resistant conveyor belt |
| WO2016013486A1 (en) * | 2014-07-25 | 2016-01-28 | 横浜ゴム株式会社 | Rubber composition for heat-resistant conveyor belts and heat-resistant conveyor belt |
| US10040634B2 (en) * | 2014-07-25 | 2018-08-07 | The Yokohama Rubber Co., Ltd. | Rubber composition for heat-resistant conveyor belts and heat-resistant conveyor belt |
| KR102054244B1 (en) | 2014-07-25 | 2019-12-10 | 요코하마 고무 가부시키가이샤 | Rubber composition for heat-resistant conveyor belts and heat-resistant conveyor belt |
| US20170362474A1 (en) * | 2014-12-05 | 2017-12-21 | The Yokohama Rubber Co., Ltd. | Bonding Method and Conveyor Belt |
| US10501662B2 (en) * | 2014-12-05 | 2019-12-10 | The Yokohama Rubber Co., Ltd. | Bonding method and conveyor belt |
| KR20210084551A (en) * | 2018-11-28 | 2021-07-07 | 요코하마 고무 가부시키가이샤 | Rubber composition for conveyor belts and conveyor belts |
| KR102542335B1 (en) * | 2018-11-28 | 2023-06-14 | 요코하마 고무 가부시키가이샤 | Rubber composition for conveyor belt and conveyor belt |
| CN113174103A (en) * | 2020-01-27 | 2021-07-27 | 横滨橡胶株式会社 | Rubber composition and conveyor belt |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5625391B2 (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5625391B2 (en) | Rubber composition for heat-resistant conveyor belt and heat-resistant conveyor belt | |
| JP5850183B2 (en) | Rubber composition for heat-resistant conveyor belt and heat-resistant conveyor belt | |
| JP5727442B2 (en) | Transmission belt | |
| JP5854095B1 (en) | Rubber composition for heat-resistant conveyor belt and heat-resistant conveyor belt | |
| WO2008056482A1 (en) | Transmission belt and process for producing the same | |
| US10221306B2 (en) | Rubber composition for hose, and hose | |
| JP6583518B1 (en) | Rubber composition for conveyor belt and conveyor belt | |
| JP3951415B2 (en) | Heat resistant belt | |
| JP4698342B2 (en) | Rubber composition and conveyor belt using the rubber composition | |
| KR101820319B1 (en) | Bonding method and conveyor belt | |
| JP4792708B2 (en) | Rubber composition for conveyor belt and conveyor belt | |
| CN115725139B (en) | Rubber composition for conveyor belt and conveyor belt | |
| JP2008223005A (en) | Rubber composition for belt, belt for power transmission, and toothed belt | |
| JP2021127386A (en) | Rubber composition for conveyor belt and conveyor belt | |
| JP2023007099A (en) | Rubber composition for conveyor belts and conveyor belt | |
| CN113174103A (en) | Rubber composition and conveyor belt | |
| JPWO2017145866A1 (en) | Rubber composition for adhesive, rubber bonding method and conveyor belt | |
| JP2009058026A (en) | Driving belt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20130213 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130513 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130618 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130819 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20140430 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20140730 |
|
| A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20140806 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140902 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20140915 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5625391 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |