200829743 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種將線予以夹持在2個朝互為相反之 2之摩㈣間並進行㈣（False Twist)之帶式假撫 衣置的摩擦帶。 【先則技術】 該種摩擦㈣要求者射製造高之線及财磨耗性 為滿足以上2種要求，提案有—種由相對性之低橡勝 f度之表面層、及高橡膠硬度之補強層構成之2層構造的 摩擦帶(參照專利文獻1等）。 、另-方面，為了對皮帶賦予預定之張力，必須埋設線 =作為⑦體’且必須為以覆蓋該線之方式於皮帶本體之皮 :輪侧表面（皮帶背面）設置具機械性強度之織布的構造， 仁在亦滿足由上述線品質所要求之條件的條件下，無法避 免因進行皮帶之硫化（vulcanization)時之橡膠收縮所造成 2翹曲，而有皮帶之與線接觸之面彎曲成凹狀，且在撚線 ¥應力集中在寬度方向端部的問題（參照專利文獻2等）。 口此在專利文獻2中提案有一種構造，其係具有與 線接觸之表面橡膠層、及積層於該表面橡膠層之補強層， 該表面橡膠層之硬度係JIS A等級70至80,在該補強層 里》又有心體索，在該補強層之表面侧配設有第1織布， 且在該補強層與該表面橡膠層之間配設有第2織布，但上 述構造依然無法完全解決上述之彎曲問題。 再者雖亦提案有一種將表面彎曲成凹狀之皮帶之表 319630 5 200829743 面侧的寬度方向兩側之角部研磨加工成圓形的技術手段， 但依然不能根本地解決。 (專利文獻1)曰本特開平1 6439號公報 (專利文獻2)日本特開2〇〇2_13〇33號公報 【發明内容】 (發明所欲解決之課題） 本發明係著眼於存在於上述習知技術之問題點而研創 ，者，其課題係提供-種摩擦帶，該摩擦帶係不會對被假樵 之線的品質造成影響，耐磨耗性佳且可解決因彎曲造成之 應力集中的問題。 (解決課題之手段） 解決前述課題之本發明的第1態樣係一種摩擦帶，係 由具備上層及下層之無端皮帶所構成者，該上層係由與被 假撚之線接觸的橡膠狀彈性體所構成，訂層係由設置在 前述上層之背面的橡膠狀彈性體所構成；在該摩擦帶中， 前述下層之與前述上層為相反側的背面側設有由且有朝 九度方向之伸縮性之構件所構成的芯體，且在該芯體之前 述上層側之前述下層埋設有芯線，前述上層之表面係呈平 坦狀或寬度方向中央部比寬度方向兩端部突出的凸形狀。 A本發月的第2您、樣係於第！態樣記載之摩擦帶中，在 别述上層與下層之間埋設有第2芯體。 、#、楚本發月的第3恶樣係於第2態樣記載之摩擦帶中，前 A第2芯體係由織布所構成。 (發明之效果） 319630 6 200829743 . 根據本發明，藉由在皮帶之背面侧設置由具伸縮性之 ，構件所成的芯體，由於芯體在橡膠硫化後會收縮，因此可 減低表面彎曲成凹狀的翹曲，且表面會呈平坦狀或寬度方 向中央部從寬度方向兩端部突出的凸形狀，而達成 撚時之應力集中的問題的效果。 、 【實施方式】 以下，依據一實施形態詳細說明本發明。 第1圖係顯示本發明一實施形態之摩擦帶的橫剖視構 Γ造。如第1圖⑷、（b)圖所示，摩擦帶1〇心1〇3(以下統稱 為摩擦帶10)係具備：由與線接觸的橡膠狀彈性體所構成 之上層11A、11B(以下統稱為上層11);及由設置在前述上 層之背面側的橡膠狀彈性體所構成之下層12A、12叫以下 統稱為下層12广在下層12之背面侧設置有由編織物構成 ，第1芯體13A、13B(以下統稱為第！芯體13)，而且在 第1芯體13之内侧（上層^侧）的下層12埋設有由線所構 (成之芯線14A、14B(以下統稱為芯線14)，再者，於上層 11與下層12之間設有第2芯體15A、15B(以下統稱為第2 芯體15)。 形成上層11及下層12之橡膠狀彈性體的橡膠基材係 只要為以往使用於摩擦帶者即可。從撚線特性及耐磨耗性 之優點來看，較佳為自乙烯_丙烯-二烯共聚物 (Ethylene-pr0pylene-diene c〇p〇lymer，EpDM)、丁 睛橡膠 (NBR)、氫化丁睛橡膠(H-NBR)、聚氨基甲酸酯 (polyurethane)等選擇之橡膠基材。藉由將已在該等橡膠基 319630 7 200829743 ^適當地調配硫化劑、可塑劑、填充料之橡膠基材 予以硫化@形成具有預定硬度、耐磨耗性等之橡膠狀 彈性體。上層U之橡膠狀彈性體較佳為硬度相對較低心 線特性佳者，而為了具有補強性層之功能，下層12之橡勝 狀彈性體較佳為硬度相對較高者。 夕 1考慮上述特性時，上層u之橡縣彈性體的橡膠硬产 較佳為60至85。’下層12之橡膠狀彈性體的橡膠硬度：200829743 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a belt-type fake dressing in which two wires are held between two mutually opposite ones (four) and (four) (False Twist) Friction belt. [First technique] This kind of friction (4) requires the person to shoot the high line and the fuel wear to meet the above two requirements. The proposal has a surface layer with a relatively low rubberity and a high rubber hardness. A friction belt having a two-layer structure of a layer structure (see Patent Document 1, etc.). On the other hand, in order to impart a predetermined tension to the belt, it is necessary to embed the wire = as the 7 body 'and must be placed on the skin of the belt body in such a manner as to cover the wire: the mechanical strength of the wheel side surface (the back of the belt) Under the condition that the fabric is constructed and the conditions required by the above-mentioned thread quality are satisfied, the warpage caused by the rubber shrinkage during the vulcanization of the belt cannot be avoided, and the surface of the belt is in contact with the line. In the case of a concave shape, the stress is concentrated on the end portion in the width direction (see Patent Document 2, etc.). In the patent document 2, there is proposed a structure having a surface rubber layer in contact with a line and a reinforcing layer laminated on the surface rubber layer, the hardness of the surface rubber layer being JIS A grade 70 to 80, In the reinforcing layer, there is a heart-shaped body, and a first woven fabric is disposed on the surface side of the reinforcing layer, and a second woven fabric is disposed between the reinforcing layer and the surface rubber layer, but the above structure is still incomplete Solve the above bending problem. Furthermore, there is also proposed a type of belt which bends the surface into a concave shape. 319630 5 200829743 The technical method of grinding and processing the corners on both sides in the width direction of the surface side is still not solved fundamentally. [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. In order to solve the problem of technology, we will provide a kind of friction belt, which will not affect the quality of the false twisted wire, and has good wear resistance and can solve the stress concentration caused by bending. The problem. (Means for Solving the Problem) A first aspect of the present invention which solves the above-mentioned problems is a friction belt which is composed of an endless belt having an upper layer and a lower layer, and the upper layer is rubber-elastic which is in contact with a line which is falsely twisted. The body is formed of a rubber-like elastic body provided on the back surface of the upper layer; in the friction belt, the back side of the lower layer opposite to the upper layer is provided with a direction of nine degrees A core body composed of a stretchable member is provided with a core wire embedded in the lower layer on the upper layer side of the core body, and the surface of the upper layer is a flat shape or a convex shape in which a central portion in the width direction protrudes from both end portions in the width direction. The second of the month of this month, the sample is in the first! In the friction belt described in the aspect, a second core body is buried between the upper layer and the lower layer. The #3, the third evil sample of Chuben's hair is in the friction belt described in the second aspect, and the front A second core system is composed of woven fabric. (Effect of the Invention) 319630 6 200829743. According to the present invention, by providing a core body made of a member which is stretchable on the back side of the belt, since the core body shrinks after vulcanization of the rubber, the surface can be reduced to The concave shape is warped, and the surface has a flat shape or a convex shape in which the central portion in the width direction protrudes from both end portions in the width direction, and the effect of stress concentration at the time of squeezing is achieved. [Embodiment] Hereinafter, the present invention will be described in detail based on an embodiment. Fig. 1 is a cross-sectional structural view showing a friction belt according to an embodiment of the present invention. As shown in Fig. 1 (4) and (b), the friction belt 1 〇 1 〇 3 (hereinafter collectively referred to as the friction belt 10) includes the upper layers 11A and 11B (hereinafter referred to as a rubber-like elastic body in contact with the wire) (hereinafter referred to as The lower layers 12A and 12 are collectively referred to as the lower layer 12, and are collectively referred to as the lower layer 12, and are formed of a woven fabric on the back side of the lower layer 12, and the first core is formed of a rubber-like elastic body provided on the back side of the upper layer. The bodies 13A and 13B (hereinafter collectively referred to as the "the core body 13") are embedded in the lower layer 12 on the inner side (upper layer side) of the first core body 13 by the wires (the core wires 14A and 14B (hereinafter collectively referred to as core wires) 14) Further, the second core bodies 15A and 15B (hereinafter collectively referred to as the second core body 15) are provided between the upper layer 11 and the lower layer 12. The rubber substrate of the rubber-like elastomer forming the upper layer 11 and the lower layer 12 is As long as it is used in the friction belt in the past, it is preferably an ethylene-propylene-diene copolymer (Epylene-pr0pylene-diene c〇p〇lymer, EpDM) from the viewpoint of the characteristics of the twist line and the wear resistance. ), a rubber substrate selected from the group consisting of NBR, hydrogenated butadiene rubber (H-NBR), and polyurethane. The rubber substrate which has been appropriately formulated with the vulcanizing agent, the plasticizer, and the filler in the rubber base 319630 7 200829743 is formed into a rubber-like elastomer having a predetermined hardness, wear resistance, etc. The rubber of the upper layer U Preferably, the elastic body has a relatively low hardness, and the rubber layer of the lower layer 12 preferably has a relatively high hardness. The rubber hardening of the elastic rubber of the rubber county of u is preferably 60 to 85. The rubber hardness of the rubbery elastomer of the lower layer 12:
佳為60 i 95。。但上層u《橡膠狀彈性體的硬度亦可比 下層12之橡膠狀彈性體的硬度高。 本實施形態之摩擦帶10係在下層12之下面（背面）側 具備第1芯體13者。該第i芯體13係由屬於具有朝寬度 方向之伸縮性之構件的編織物所構成。在此，所謂具有ς 寬度方向之伸縮性之構件，係指至少具有朝寬度方向夕伸 縮性的構件，當然，亦可具有朝長度方向的伸縮性。此外， 於此所謂具有朝寬度方向之伸縮性的構件，係才旨在伸長之 狀態下具有收縮性者，亦可為具有因熱收縮等所致之收縮 性者。具有朝寬度方向之伸縮性之構件，係可在被覆於製 造用模具時，以伸長之狀態下予以被覆，亦即在保持收縮 性之狀態下予讀覆，當從製造用模具職時收縮成與橡 膠組成物硫化時之橡膠收縮同等或其以上之程度。 由於本實施形態之第丨芯體13係由具有伸縮性之編織 物所構成，因此在製造摩擦帶時可將第丨芯體13在伸長之 狀態下予以被覆於製造用模具。而且，即使上層〗丨及下層 12在硫化時收縮，在將成形體（摩擦帶）從製造用模具脫模 319630 8 200829743 時第1芯體13亦會收縮。M t ^ m 精此，上層11之表面的寬度方 向之中央^係f曲成比寬度方向兩端部突出之凸形狀（第1 圖⑷)，或形成大致平坦狀(第i _。亦即，第】芯體 13係為在脫模時大幅收縮者，其不會使摩擦帶之表面彎曲 ί凹形狀：而是使摩擦帶之表面形成平坦者，或是使摩擦 罗之表面彎曲成凸形妝去 / 「 取办狀者在此，「平坦」係指安裝於皮帶 輪時實質上與平坦同等地私禮七 j予地钐禪作用者，亦包含稍微地形成 為凹形狀者。 構成此種第i芯體13之編織物，係只要具有上述作用 者即可’並無特別限定’但較佳為採用例如使用15丹尼（d， denler)至300丹尼⑷之線的編織物。這是由於使用未達15 丹尼之線時，無法充分發揮Μ體13所產生之效果，使用 比300丹尼粗之線時，與皮帶輪接觸之背面會形成凹凸， ^成，動性降低之故。再者’編織物之編織方式係只要具 有朝見度方向之伸縮性者即可，並無特別限^，但較佳 圓編織、平編織等。 作^ 形態中，第1芯體13雖係作成編織物， 仁弟仏體13係只要為.具有朝寬度方向之伸縮性之構件即 ^例如’可列擧具伸縮性之編織方式的織布或不織布、 ===Γ的線 '由彈性體(-一r)橡膠 構叙缚片或涛片狀成形體、具伸縮性之樹脂成形體等。 尸第1芯體13之材質雖無特別限定，但可列舉例如綿、 尼月I、聚醋、，芳香族㈣胺等，特別以尼龍為佳。 在本實施形態之摩擦帶1()中，下層12之以大致 319630 9 200829743 於弟1芯體13上層側之士 Q w之方式設置的芯線14係對， 預定之張力（腰力）者。亦p 你釘皮f賦予 ^ ^ /N P ’芯線14係對皮帶賦予夹住俨 撚之線時所需之張力者。妒 又Y飯 廿 心線14係使用以往所用者即可， 並無特別限定’但可列舉 醯胺、玻璃繊維等，特m二 聚曰方香族聚 手特別以使用例如#8至#100之粗度者 投置在上層11與下層12之間的第2芯體15係可使 編織物’亦可使用織布，且不-定要設置。然而，從對皮 帶賦予預定之腰力的観點來看，較佳為使用織布。反 不會被切斷，而可進行穩定之假撚，亦使經假撚之線的品 質提升。 〜藉由形成上述構成，摩擦帶1〇係彎曲成上層丨〗之表 :見度方向中央部較寬度方向兩端部突出之凸形狀、亦即 弯曲成太妓狀者（參照第1圖（a))，或形成平坦者（參照第1 圖（b))。藉此，裝設在皮帶式假撚裝置之皮帶輪的摩擦帶 1〇,並非僅在其表面之寬度方向端部與線接觸者，而是在 寬度方向中央部或皮帶表面整體與線接觸者。亦即，藉由 使用摩擦帶10’使線之應力不會集中在寬度方向端部且線 在此，說明摩擦帶10之製造方法。 首先，於金屬製之圓筒狀模具被覆作為第1芯體13 之具伸縮性的構件，並將芯線14捲繞在該構件，並塗布接 著劑。 接著，藉由擠壓機（extruder)將作為下層12之未硫化 的橡膠組成物被覆在設有第1芯體13及芯線14之圓筒狀 319630 10 200829743 模具上。 ♦ ， 然後，在其上進一步覆蓋第2芯體15，並在第2芯體 15上塗布接著劑。接著，藉由掩壓機被覆作為上層U之 未硫化的橡膠組成物，並從其上捲繞包帶狀的薄片。 使上層11與下層12之橡膠組成物硫化/硬化後脫模， 而传同狀構件。 〜藉由研磨機研磨所得之筒狀構件的表面後，以預定之 寬度予以刺切而得所希望之無端皮帶。 f 再者，製造方法並未限定於此，亦可利用衝圧成形等 來形成橡膠管。而且，表面之研磨步驟因應需要進行即可， 亦f對表面賦予凹凸加工或型模樣等。 此外，在上述之方法中，雖塗布接著劑，但亦可採用 使用橡膠基材的橡膠糊。 以下，說明具體之一實施例，但當然本發明並非限定 於此。 f (實施例1) κ''.... ' 於金屬製之圓筒狀模具被覆作為第〗芯體之由線粗度 70丹尼之尼龍所構成之編織物，在該編織物捲繞聚酯之芯 線，並塗布接著劑。藉由擠壓機擠壓將作為下層之由nbr 所構成之橡膠組成物擠壓出並予以被覆至該編織物，並將 由尼龍構成之織布作為第2芯體覆蓋在該橡膠組成物上， 再塗布接著劑。然後，藉由擠壓機擠壓將作為上層之由 H-ISHBR所構成之橡朦組成物擠壓出並予以被覆至該織布 上，再從其上捲繞包帶狀之布。 319630 11 200829743 /將上，結構物在15代下進行加熱典理50分鐘並硫化 _後予以脫模，而得到無端筒狀構件。 以研磨機研磨無端筒狀構件之表面，並以預定之寬度 刺切，而得厚度以麵、寬度8.〇mm、上層之硬度8〇。， 下層之硬度80之實施例i的無端皮帶。 (實施例2) 除了使用由尼龍構成之編織物做為第2芯體，來取代 由尼龍構成之織布以外，以與實施例Ί同樣之方式，而得 〔到實施例2之無端皮帶。 (實施例3) 除了未使用第2芯體以外，以與實施例丨同樣之方式， 而得到實施例3之無端皮帶。 (實施例4) 除了使S NBR作為上層之橡膠組成物，以取代H-Nbr 以外，以與實施例2同樣之方式，而得到上層之硬度8〇。、 、下層之硬度80。的無端皮帶。 (實施例5) 除了在下層使用硫化後之硬度9〇。的橡膠組成物以 外，以與實施例2同樣之方式，而得到上層之硬度8〇。、 下層之硬度90。的無端皮帶。 (比較例1) 除了使用由尼龍構成之實質上無伸縮性之織布做為第 1芯體，來取代由線粗度7〇丹尼之尼龍構成的編織物以 外，以與實施例1同樣之方式·，而得到比較例無端皮 12 319630 200829743 帶。 (比較例2) 除了使用由尼龍構成之實 1芯體，來取代由線粗度7〇 外’以與實施例2同樣之方式 帶。 (比較例3) 質上無伸縮性之織布做為第 丹尼之尼龍構成的編織物以 ，而得到比較例2之無端皮Good for 60 i 95. . However, the hardness of the rubber layer-like elastomer of the upper layer u may be higher than that of the rubber-like elastomer of the lower layer 12. The friction belt 10 of the present embodiment is provided with the first core body 13 on the lower surface (back surface) side of the lower layer 12. The i-th core 13 is composed of a woven fabric belonging to a member having a stretchability in the width direction. Here, the member having the stretchability in the width direction of the crucible means a member having at least an outward stretchability in the width direction, and of course, it may have stretchability in the longitudinal direction. Further, the member having the stretchability in the width direction is intended to have shrinkage in an extended state, and may have shrinkage due to heat shrinkage or the like. The member having the stretchability in the width direction can be covered in an extended state when it is coated on the mold for production, that is, it can be read in a state of maintaining shrinkage, and shrinks from the time of manufacturing the mold. The degree of rubber shrinkage equal to or higher than when the rubber composition is vulcanized. Since the second core body 13 of the present embodiment is composed of a stretchable knitted fabric, the second core body 13 can be coated on the manufacturing mold in an extended state when the friction belt is manufactured. Further, even if the upper layer and the lower layer 12 are shrunk during vulcanization, the first core 13 is also shrunk when the molded body (friction belt) is released from the mold for manufacturing 319630 8 200829743. M t ^ m In this case, the center of the surface of the upper layer 11 in the width direction is curved to have a convex shape that protrudes from both end portions in the width direction (Fig. 1 (4)), or is formed substantially flat (i__. , the first core 13 is a large shrinkage during demolding, which does not bend the surface of the friction belt. The concave shape: the surface of the friction belt is flattened, or the surface of the frictional surface is curved into a convex shape. Shapes to go / "The person who takes care of the matter here, "flat" refers to the person who is essentially the same as the flat when mounted on the pulley, and also includes the person who is slightly concave and concave. The knitted fabric of the i-th core 13 is not particularly limited as long as it has the above-described effects, but it is preferable to use a braid of, for example, a line of 15 denier (d, denler) to 300 denier (4). When the line of less than 15 Danny is used, the effect of the carcass 13 cannot be fully exerted. When the line is thicker than 300 Danny, the back surface of the pulley is in contact with the concave and convex surface, and the dynamic property is lowered. Furthermore, the weaving method of the weaving is as long as it has a direction of visibility. The shrinkage is not particularly limited, but it is preferably a circular weave, a flat weave, etc. In the form of the first core 13, although the first core 13 is made into a knitted fabric, the Tendon carcass 13 is only required to have a width. The direction-stretching member is, for example, a woven or non-woven fabric having a stretchable weave, and a line of ===Γ is composed of an elastomer (-r-ru) rubber or a sheet-like shape. The material of the corpse first core 13 is not particularly limited, and examples thereof include cotton, nicotine I, polyester, and aromatic (tetra)amine. Particularly, nylon is preferred. In the friction belt 1 () of the present embodiment, the core wire 14 provided in the lower layer 12 so as to be substantially 319630 9 200829743 in the upper layer side Q of the first core 13 is paired with a predetermined tension (waist force). Also p, you nailed f to give ^ ^ / NP 'core 14 series to the belt to give the tension required to clamp the line of the 妒. 妒 Y Y rice line 14 series can be used in the past, no special Qualified 'but can be cited as guanamine, glass oxime, etc., special m dimeric 曰 香 香 聚 聚 聚 聚 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别The second core 15 placed between the upper layer 11 and the lower layer 12 allows the woven fabric to be used as a woven fabric, and is not necessarily provided. However, from the point of giving a predetermined waist force to the belt Preferably, the woven fabric is used, and the woven fabric is not cut, but the stable false tweezer is also provided, and the quality of the false twisted thread is improved. 〜 By forming the above structure, the friction belt 1 is bent into the upper layer 丨〗 Table: a convex shape in which the central portion of the visibility direction protrudes from both end portions in the width direction, that is, a curved shape (see Fig. 1(a)), or a flat person (see Fig. 1(b) Thereby, the friction belt 1〇 of the pulley mounted on the belt type false twisting device is not only in contact with the line at the end portion in the width direction of the surface but in the center portion of the width direction or the entire surface of the belt. By. That is, the method of manufacturing the friction belt 10 will be described by using the friction belt 10' so that the stress of the wire is not concentrated at the end portion in the width direction and the line is here. First, a cylindrical mold made of metal is coated as a member having elasticity as the first core 13, and the core wire 14 is wound around the member, and a binder is applied. Next, the unvulcanized rubber composition as the lower layer 12 was coated on a cylindrical 319630 10 200829743 mold provided with the first core 13 and the core 14 by an extruder. ♦ Then, the second core 15 is further covered thereon, and an adhesive is applied to the second core 15. Next, the unvulcanized rubber composition as the upper layer U was coated by a masker, and the strip-shaped sheet was wound thereon. After the rubber composition of the upper layer 11 and the lower layer 12 is vulcanized/hardened, the mold is released, and the same member is passed. The surface of the obtained tubular member is ground by a grinder, and then pierced at a predetermined width to obtain a desired endless belt. f Further, the manufacturing method is not limited thereto, and a rubber tube may be formed by punching or the like. Further, the polishing step of the surface may be carried out as needed, and the surface may be provided with a concavo-convex processing or a pattern. Further, in the above method, a rubber paste using a rubber substrate may be used although an adhesive is applied. Hereinafter, a specific embodiment will be described, but the present invention is of course not limited thereto. f (Example 1) κ''.... 'In a cylindrical mold made of metal, a woven fabric composed of a nylon having a line thickness of 70 denier as a core of the first core was wound on the braid. The core of the polyester is coated with an adhesive. The rubber composition composed of nbr as a lower layer is extruded by an extruder and coated onto the knitted fabric, and a woven fabric made of nylon is covered as a second core body on the rubber composition. The adhesive is applied again. Then, the rubber composition composed of H-ISHBR as the upper layer was extruded by an extruder and coated onto the woven fabric, and the tape-like cloth was wound therefrom. 319630 11 200829743 / Above, the structure was heated for 15 minutes under 15 generations and vulcanized _ and then demolded to obtain an endless cylindrical member. The surface of the endless tubular member was ground by a grinder and pierced with a predetermined width to obtain a thickness of 8. 〇 mm and a hardness of 8 Å in the upper layer. , the endless belt of the embodiment i of the lower layer hardness 80. (Example 2) An endless belt of Example 2 was obtained in the same manner as in Example except that a woven fabric made of nylon was used as the second core body instead of the woven fabric made of nylon. (Example 3) An endless belt of Example 3 was obtained in the same manner as in Example except that the second core body was not used. (Example 4) The hardness of the upper layer was obtained in the same manner as in Example 2 except that S NBR was used as the rubber composition of the upper layer instead of H-Nbr. The hardness of the lower layer is 80. Endless belt. (Example 5) A hardness of 9 Å after vulcanization was used in the lower layer. The hardness of the upper layer was 8 Å in the same manner as in Example 2 except for the rubber composition. The hardness of the lower layer is 90. Endless belt. (Comparative Example 1) The same procedure as in Example 1 was carried out, except that a woven fabric made of nylon and having substantially no stretchability was used as the first core body instead of the woven fabric composed of nylon having a line thickness of 7 〇 Danny. The way to get the comparative example of the endless skin 12 319630 200829743 belt. (Comparative Example 2) A belt was used in the same manner as in Example 2 except that a solid body made of nylon was used instead of the wire thickness of 7 〇. (Comparative Example 3) A woven fabric having no resilience as a woven fabric made of nylon of Danny was obtained as the woven fabric of Comparative Example 2
1芯 外， 帶0 除了使用由尼龍構成之實f上無伸縮性之織布做為第 體，ί取代由線粗度70丹尼之尼龍構成的編織物以 以與實施例3同樣之方式，而得到比較例3之無端皮 (比較例4) 除了使用由尼龍構成之實質上無伸縮性之織布做為第 1芯體，來取代由繼70丹尼之尼龍構成的編織物以 外，以與實施例4同樣之方式，而得到比較例4之無端皮 帶。 (比較例5) 除了使用由尼龍構成之實質上無伸縮性之織布做為第 1芯體，來取代由線粗度70丹尼之尼龍構成的編織物以 外，以與實施例5同樣之方式，而得到比較例5之盔端皮 帶。 (比較例6) 除了未使用芯線以外，以與實施例2同樣之方式，而 得到上層之硬度80。、下層之硬度8〇。之比較例6的無端皮 319630 13 200829743 帶。 (比較例7) —除了使用由尼龍構成之實質上無伸縮性之織布做為， 第1芯體來取代由線粗度70丹尼之尼龍構成的編織物以 外，以與比較例6同樣之方式，而得到比較例7之無端皮 帶。 …、 (試驗例） 針對在各實施例及各比較例製作之無端皮帶各2條， Γ測量表面（與線接觸之面）的彎曲量。彎曲量係藉由表=粗 度计（sufcoderSE_40D(商品名音譯），小阪研究所社製），測 篁見度方向兩端及中央3點之表面位置，並將連結寬度方 向兩端之線、與平行於該線且通過皮帶中央之線的距離作 為彎曲量。再者，將水平之狀態設為〇，將無端皮帶之表 面呈凸形狀的彎曲量設為正値，將無端皮帶之表面呈凸形 狀的彎曲量設為負値。 此外’彎曲量係遍及長度方向分別測定各8點，並取 %其平均値。將結果顯示在表1。 14 319630 200829743 [表1] 第1芯體 第2芯體 彎曲量 MAX(mm) 彎曲量 MIN(mm) ο.〇Π_ 實施例1 編織物 織布 0.035 0.000 0.020 0.000 o.oo^_ 實施例2 編織物 編織物 0.020 0.000 0.013 ___ — 0.020 0.000 ο 011_ 實施例3 編織物 無 0.020 0.000 0.013 0.020 0.000 '^ό^δΤδ^^ 實施例4 編織物 編織物 0.020 0.005 0.020 0.005 0.0Π_- 實施例5 編織物 編織物 0.020 0.000 〇.0〇6__ 0.015 0.000 —>-———--- 〇 〇〇8 比較例1 織布 織布 -0.050 -0.025 V/ · ------ • 0.028 •0.045 -0.015 比較例2 織布 編織物 -0.080 -0.045 -0.067 -0.070 -0.025 «π 〇54 比較例3 織布 無 -0.070 -0.055 ·* V/ . V/ -- -〇.〇64__ -0.070 -0.050 -0.061 比較例4 織布 編織物 -0.105 -0.080 --—h^ • 〇.〇93__ -0.095 -0.075 π 〇86 比較例5 織布 編織物 編織物 -0.085 -0.040 ___ -0.058 --—____-----—' 0.008_一 0.070 0.015 -0.035 ~~oTooo~ 比較例6 編織物 0.015 〇.〇〇〇 -0.086 比較例7 織布 編織物 -0.105 ~~^〇T〇7〇 ~ -0.095 -0.075 由該結果，就將具有伸縮性之編織物作為第i芯體的 貫施例1至3及5的無端皮帶而言，彎曲量最小之部分為 〇,亦即無彎曲，且彎曲量之平均値皆為正値。再者，實施 例4之無端皮帶的彎曲量亦為正値。由上述得知，實=例 1至5之無端皮帶的表面部分皆平坦，或中央部呈2形狀 319630 15 200829743 (太鼓狀）。 相對於此，就將實質上無伸縮性之織布作 # 的比較例！至5的無端皮帶而言，彎曲量之平均値皆^負 値。由上述得知，比較例！至5之無端皮帶的表面部分皆 係在上層之中央部呈凹形狀。 由上述得知，本發明之摩擦帶係減低表 狀之彎曲，使表面呈平坦或呈寬度方向中乂 ：： 兩端部突㈣凸形狀，以解決因彎曲所造成之問題;^ 再者，將實質上無伸縮性之織布作為第j芯體的比較 例7的無端皮帶之彎曲量之平均値為負値，且中央部呈凹 ，狀’相對於此，將具伸縮性之編織物作為第！芯體 較例6的無端皮帶之彎曲量之平均俊為正値， ::狀…由此’雖不論線之有無而可消除彎曲，但由於： 【圖式簡單說明】 “、、泉料所需之張力者。 第1圖係本發明之摩擦帶的橫剖視圖。 【主要元件符號說明】 10， 、10A、 10B 摩擦 帶 11、 .11A、 11B 上層 12、 • 12A、 12B 下層 13、 13A、 13B 第1 芯 14、 14A、 14B 芯線 15、 15A、 15B 第2 芯 319630 16In addition to the one core, the belt 0 is used as the first body except for the non-stretchable woven fabric made of nylon, and the woven fabric composed of the nylon having a line thickness of 70 denier is replaced in the same manner as in the third embodiment. And the endless skin of Comparative Example 3 was obtained (Comparative Example 4), except that a woven fabric substantially non-stretchable composed of nylon was used as the first core body instead of the woven fabric composed of 70 denier nylon. In the same manner as in Example 4, the endless belt of Comparative Example 4 was obtained. (Comparative Example 5) The same procedure as in Example 5 was carried out, except that a woven fabric made of nylon and having substantially no stretchability was used as the first core, and a woven fabric composed of nylon having a line thickness of 70 denier was used. In the manner, the helmet end belt of Comparative Example 5 was obtained. (Comparative Example 6) The hardness of the upper layer was obtained in the same manner as in Example 2 except that the core wire was not used. The hardness of the lower layer is 8〇. The endless skin of Comparative Example 6 was 319630 13 200829743. (Comparative Example 7) - In the same manner as in Comparative Example 6, except that a woven fabric made of nylon which is substantially non-stretchable was used, and the first core was replaced with a knitted fabric composed of nylon having a line thickness of 70 denier. In the same manner, the endless belt of Comparative Example 7 was obtained. (Test Example) The amount of bending of the surface (the surface in contact with the line) was measured for each of the endless belts produced in each of the examples and the comparative examples. The amount of bending is measured by the table = thickness meter (sufcoder SE_40D (trade name), Kosei Research Institute), and the surface positions at both ends of the visibility direction and the center 3 points are measured, and the lines connecting the ends in the width direction are connected. The distance from the line parallel to the line and passing through the center of the belt is taken as the amount of bending. Further, the horizontal state is set to 〇, the amount of bending in which the surface of the endless belt is convex is set to 値, and the amount of bending in which the surface of the endless belt is convex is set to negative 値. In addition, the amount of bending was measured for each 8 points in the longitudinal direction, and the average 値 was taken as %. The results are shown in Table 1. 14 319630 200829743 [Table 1] The first core body 2nd core bending amount MAX (mm) The bending amount MIN (mm) ο. 〇Π _ Example 1 woven fabric woven fabric 0.035 0.000 0.020 0.000 o.oo ^ _ Example 2 Knitted fabric 0.020 0.000 0.013 ___ — 0.020 0.000 ο 011_ Example 3 Knitted fabric without 0.020 0.000 0.013 0.020 0.000 '^ό^δΤδ^^ Example 4 Knitted fabric 0.020 0.005 0.020 0.005 0.0Π_- Example 5 Knitted fabric Knitted fabric 0.020 0.000 〇.0〇6__ 0.015 0.000 —>------ 〇〇〇8 Comparative example 1 woven fabric-0.050 -0.025 V/ · ------ • 0.028 •0.045 - 0.015 Comparative Example 2 Woven fabric-0.080 -0.045 -0.067 -0.070 -0.025 «π 〇54 Comparative example 3 Weaving without -0.070 -0.055 ·* V/ . V/ -- -〇.〇64__ -0.070 -0.050 -0.061 Comparative Example 4 woven fabric -0.15 - 0.080 - -h^ • 〇.〇93__ -0.095 -0.075 π 〇86 Comparative Example 5 woven fabric woven fabric -0.085 -0.040 ___ -0.058 ---____ -----—' 0.008_一0.070 0.015 -0.035 ~~oTooo~ Comparative Example 6 Braid 0.015 〇.〇〇〇-0.086 Comparative Example 7 Weaving Fabric -0.15 ~~^〇T〇7〇~ -0.095 -0.075 From this result, the stretched fabric is used as the ith core of the endless belts of Examples 1 to 3 and 5, the amount of bending The smallest part is 〇, that is, there is no bending, and the average 値 of the amount of bending is positive. Further, the amount of bending of the endless belt of the fourth embodiment was also positive. From the above, it is known that the surface portions of the endless belts of Examples 1 to 5 are all flat, or the central portion has a shape of 2 319630 15 200829743 (too drum). On the other hand, a weaving cloth having substantially no stretchability is a comparative example of #! For endless belts up to 5, the average amount of bending is ^. From the above, the comparison example! The surface portion of the endless belt to 5 is concave in the central portion of the upper layer. From the above, it is known that the friction belt of the present invention reduces the curvature of the surface, so that the surface is flat or in the width direction, the ridge is: the two ends are convex (four) convex shape to solve the problem caused by the bending; The average amount of the bending amount of the endless belt of Comparative Example 7 in which the substantially non-stretchable woven fabric is the j-th core is negative, and the center portion is concave, and the stretch is knitted. As the first! Compared with the endless belt of the example 6, the average amount of the bending force of the core is positive, and the shape is: [this can eliminate the bending regardless of the presence or absence of the line, but because: [Simple description of the drawing] ",, spring material Fig. 1 is a cross-sectional view of the friction belt of the present invention. [Description of main components] 10, 10A, 10B Friction belt 11, .11A, 11B Upper layer 12, • 12A, 12B Lower layer 13, 13A, 13B 1st core 14, 14A, 14B core wire 15, 15A, 15B 2nd core 319630 16