JPH10217347A - Conveyor belt made of resin - Google Patents
Conveyor belt made of resinInfo
- Publication number
- JPH10217347A JPH10217347A JP2464197A JP2464197A JPH10217347A JP H10217347 A JPH10217347 A JP H10217347A JP 2464197 A JP2464197 A JP 2464197A JP 2464197 A JP2464197 A JP 2464197A JP H10217347 A JPH10217347 A JP H10217347A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- conveyor belt
- net
- thermoplastic resin
- resin
- 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
Links
Landscapes
- Belt Conveyors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は樹脂製コンベヤベル
トに関し、特に食品や精密機器ならびに薬品等の搬送用
コンベヤベルトとして用いるのに適した、汚染や異物の
発生しにくいコンベヤベルトに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin-made conveyor belt, and more particularly to a conveyor belt which is suitable for use as a conveyor belt for transporting foods, precision instruments, chemicals, etc., and which is less likely to generate contamination and foreign substances.
【0002】[0002]
【従来の技術】食品や精密機器ならびに薬品等の搬送用
コンベヤベルトとしては、一般的にポリエステル繊維な
どの織布(以下「帆布」という)の片面もしくは両面に
ポリ塩化ビニル、ポリウレタン等の熱可塑性樹脂を接着
剤を介して積層したものが多く用いられている。しか
し、これらのコンベヤベルトは、帆布に吸水性があるの
で、かびや雑菌等が繁殖しやすく、汚れやすい。また、
接着剤を介装しているために、帆布と熱可塑性樹脂が剥
離することがある。さらに、コンベヤベルトが蛇行して
ガイドに当たると、ベルト端部が擦れることにより帆布
がほつれ、ほつれたものが異物として搬送物に混入する
という問題が発生する。2. Description of the Related Art As a conveyor belt for transporting foods, precision instruments and chemicals, generally, a woven fabric such as polyester fiber (hereinafter referred to as "canvas") is coated on one or both sides with a thermoplastic material such as polyvinyl chloride or polyurethane. What laminated | stacked resin via the adhesive agent is used in many cases. However, in these conveyor belts, since the canvas has water absorbency, mold, germs and the like easily propagate and are easily stained. Also,
Because the adhesive is interposed, the canvas and the thermoplastic resin may peel off. Furthermore, when the conveyor belt meanders and hits the guide, the belt ends are rubbed, so that the canvas is frayed, and the frayed material is mixed as foreign matter into the conveyed product.
【0003】そこで、このような問題が発生しないよう
に、帆布のないポリエステル樹脂単層のコンベヤベルト
が提供されているが、この樹脂単層のベルトは走行方向
の張力により伸びやすい。この伸びを抑制するために高
強度の樹脂を用いると柔軟性が低下し、ベルトがプーリ
外径に適応しなくなる。これに対して、ベルトの厚さを
薄くすると強度が低くなり、ベルト寿命が低下するとい
う問題が発生する。[0003] In order to prevent such a problem from occurring, a polyester resin single-layer conveyor belt without canvas is provided, but the resin single-layer belt is easily stretched due to tension in the running direction. If a high-strength resin is used to suppress the elongation, the flexibility is reduced, and the belt does not adapt to the outer diameter of the pulley. On the other hand, when the thickness of the belt is reduced, the strength is reduced and a problem that the life of the belt is shortened occurs.
【0004】さらに、上層と中間層と下層が共に熱可塑
性樹脂からなる3層一体化構造のコンベヤベルトが提供
されているが、ベルトが走行方向に伸び、スリップする
ので運搬効率が低いという欠点がある。この問題を解決
するために弾性率を高くすると、ベルトがプーリ外径に
適応しなくなるという問題が発生する。また、上・下層
の材質と厚さが異なると、いわゆるカーリング(湾曲)
が生じやすくなる。Further, a conveyor belt having a three-layer integrated structure in which both the upper layer, the intermediate layer and the lower layer are made of a thermoplastic resin is provided, but has a drawback that the belt extends in the running direction and slips, resulting in low transport efficiency. is there. If the elastic modulus is increased to solve this problem, there arises a problem that the belt does not adapt to the outer diameter of the pulley. Also, if the material and thickness of the upper and lower layers are different, so-called curling (curving)
Is more likely to occur.
【0005】また、特開昭59−175648号公報に
は、ゴムや樹脂からなる被覆材にポリエステル、ナイロ
ンおよび細い金属線からなるネット状芯材を埋設したベ
ルトが記載されている。これらのベルトは、被覆材を構
成するゴムや樹脂がネット状芯材の網目に浸入してベル
ト本体と芯材を一体化している。JP-A-59-175648 describes a belt in which a net-like core made of polyester, nylon and a thin metal wire is embedded in a covering material made of rubber or resin. In these belts, the rubber or resin constituting the covering material penetrates into the mesh of the net-shaped core material to integrate the belt body and the core material.
【0006】しかし、上記公報に記載されているベルト
を食品や精密機器の搬送用ベルトとして用いた場合、ベ
ルトのカーリング(幅方向の湾曲)が生じやすく、曲げ
剛性により走行が不安定になるという問題がある。However, when the belt described in the above publication is used as a conveyor belt for food or precision equipment, curling (curving in the width direction) of the belt is likely to occur, and running becomes unstable due to bending rigidity. There's a problem.
【0007】[0007]
【発明が解決しようとする課題】このように、プーリに
容易に巻き付くことができる柔軟性を備え、且つ走行中
は伸びにくいという両特性を満足するコンベヤベルトは
提供されていない。As described above, no conveyor belt has been provided which has the flexibility to be easily wound around the pulley and satisfies both the characteristics that it is difficult to stretch during running.
【0008】本発明は従来の技術の有するこのような問
題点に鑑みてなされたものであって、その目的は、ベル
ト剥離やカーリングが発生せず、適度の柔軟性を備え且
つ走行中に伸びにくい構造のコンベヤベルトを提供する
ことにある。また、本発明の目的は、汚染しにくくて異
物の発生しにくい構造のコンベヤベルトを提供すること
にある。The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to prevent the occurrence of belt peeling and curling, to provide a moderate flexibility, and to extend during running. An object of the present invention is to provide a conveyor belt having a difficult structure. Another object of the present invention is to provide a conveyor belt having a structure that is less likely to be contaminated and less likely to generate foreign matter.
【0009】[0009]
【課題を解決するための手段】上記課題を解決するため
に本発明者等は、市場で走行中の伸びによりスリップを
発生しているベルトの調査、分析及び前述の食品や精密
機器ならびに薬品の搬送用として使用されているコンベ
ヤベルトの使用条件の調査および特開平2−28650
4号公報等に開示された技術に基づいてコンベヤベルト
を試作し、その性能を調査した結果、上記課題を解決す
るコンベヤベルトの条件として、上層と下層を同一材質
且つ同一厚みの熱可塑性樹脂で構成し、その中間には、
柔軟性に富み、強度が大きいネット状芯体をその網目を
通して上下の熱可塑性樹脂層が互いに融着一体化するよ
うに配すること、およびベルト全体としての曲げ剛性を
曲率1cm-1において60gf・cm2 /cm以下にす
ればよいことと、ベルト走行方向の1%伸張時の引っ張
り応力がベルト25mm幅当たり5kN/m以上にすれ
ばよいことを見いだした。In order to solve the above-mentioned problems, the present inventors have investigated and analyzed belts that have slipped due to elongation during running on the market, and have conducted research on the aforementioned food, precision equipment and chemicals. Investigation of operating conditions of conveyor belt used for conveyance and Japanese Patent Application Laid-Open No. 2-28650
As a result of investigating the performance of a conveyor belt as a trial based on the technology disclosed in Japanese Patent Publication No. 4 and the like, as a condition of the conveyor belt to solve the above problem, the upper layer and the lower layer are made of a thermoplastic resin having the same material and the same thickness. And in between,
A net-like core body with high flexibility and high strength is arranged so that the upper and lower thermoplastic resin layers are fused and integrated with each other through the mesh, and the bending rigidity of the belt as a whole is 60 gf · at a curvature of 1 cm −1 . cm 2 / cm or less, and that the tensile stress at 1% elongation in the belt running direction should be 5 kN / m or more per 25 mm width of the belt.
【0010】[0010]
【発明の実施の形態】すなわち、本発明は、上下両面の
熱可塑性樹脂層の間に少なくとも1枚のネット状芯体が
配設された樹脂製コンベヤベルトであって、上記上下両
面の熱可塑性樹脂層が同一材質且つ同一厚みであり、上
記上下両面の熱可塑性樹脂層がネット状芯体の網目を通
して一体に連結され、曲率1cm-1におけるベルトの曲
げ剛性が60gf・cm2 /cm以下で且つベルト走行
方向の1%伸張時の引っ張り応力がベルト25mm幅当
たり5kN/m以上であることを特徴とする樹脂製コン
ベヤベルトを第一の発明とし、上記第一の発明におい
て、上下両面の熱可塑性樹脂層が、ポリオレフィン系エ
ラストマーからなることを特徴とする樹脂製コンベヤベ
ルトを第二の発明とし、上記第一または第二の発明にお
いて、ネット状芯体を構成する縦糸及び横糸がポリエス
テルまたはポリアミドを材質とするモノフィラメントま
たは撚糸からなることを特徴とする樹脂製コンベヤベル
トを第三の発明とする。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a resin conveyor belt having at least one net-like core disposed between thermoplastic resin layers on both upper and lower surfaces. The resin layers are of the same material and of the same thickness, and the thermoplastic resin layers on the upper and lower surfaces are integrally connected through the mesh of the net-like core, and the bending rigidity of the belt at a curvature of 1 cm -1 is 60 gf · cm 2 / cm or less. A first aspect of the present invention is a resin conveyor belt characterized in that a tensile stress at 1% elongation in the belt running direction is 5 kN / m or more per 25 mm width of the belt. The second invention is a resin-made conveyor belt characterized in that the plastic resin layer is made of a polyolefin elastomer, and in the first or second invention, the net-shaped core is A resin conveyor belt warp constituting and weft is characterized in that it consists of monofilaments or twisted to a material polyester or polyamide and the third invention.
【0011】上下両面の熱可塑性樹脂層としては、例え
ば、ポリエチレン、ポリプロピレン、ポリ塩化ビニル、
ポリウレタン、ポリエステル、ポリアミド等のエラスト
マーが挙げられる。これらの中でも、搬送物が付着しに
くく、付着しても剥がれやすい点より、ポリエチレンや
ポリプロピレン等のポリオレフィン系のエラストマーが
好ましく用いられる。As the thermoplastic resin layers on the upper and lower surfaces, for example, polyethylene, polypropylene, polyvinyl chloride,
Elastomers such as polyurethane, polyester, and polyamide are exemplified. Among these, a polyolefin-based elastomer such as polyethylene or polypropylene is preferably used from the viewpoint that the conveyed material is difficult to adhere to and is easily peeled off even if adhered.
【0012】また、上面と下面の樹脂層の材質や厚みが
異なるとカーリングが発生したり、融着不良が発生しや
すいため、上面と下面の樹脂層は同一材質でしかも同一
厚みに形成することが特に重要である。If the material and thickness of the upper and lower resin layers are different from each other, curling or poor fusion is likely to occur. Therefore, the upper and lower resin layers must be made of the same material and have the same thickness. Is particularly important.
【0013】柔軟性を付与するために曲率1cm-1にお
けるベルトの曲げ剛性は60gf・cm2 /cm以下と
されるが、そのためには上面と下面の樹脂層の厚さは
0.2〜0.6mmとするのが好ましい。In order to provide flexibility, the belt has a flexural rigidity of 60 gf · cm 2 / cm or less at a curvature of 1 cm −1 . For this purpose, the thickness of the upper and lower resin layers is 0.2 to 0. It is preferably set to 0.6 mm.
【0014】走行中に伸びにくくするためには、ベルト
走行方向の1%伸張時の引っ張り応力はベルト25mm
幅当たり5kN/m以上とするのが好ましい。In order to make the belt hard to stretch during running, the tensile stress at 1% stretching in the belt running direction is 25 mm for the belt.
It is preferred to be 5 kN / m or more per width.
【0015】ネット状芯体を形成する糸としては、ポリ
エステル、ポリアミド、ポリアラミド、金属線等を用い
ることができるが、強度、網状保持性(成形時の取扱易
さ)、軽さ、耐水性(防錆)およびコストの点より、ポ
リエステルまたはポリアミドが好ましく用いられる。糸
の形態としては、モノフィラメントでも撚糸でもよい。
ネット状芯体の網目は、上面と下面の熱可塑性樹脂が溶
融して浸入でき、必要な引っ張り応力が得られれば特に
制約されないが、通常1.0〜3.0mm角の網目のも
のが用いられる。網目の形成は、縦糸と横糸を交互に上
下にして交差させて、織目の粗い織物状にしても、ま
た、縦糸と横糸を交点で融着等により接合してもよい。As the yarn forming the net-shaped core, polyester, polyamide, polyaramid, metal wire, and the like can be used, but strength, net-like holding property (ease of handling during molding), lightness, and water resistance ( From the viewpoints of rust prevention and cost, polyester or polyamide is preferably used. The form of the yarn may be a monofilament or a twisted yarn.
The mesh of the net-shaped core is not particularly limited as long as the thermoplastic resin on the upper surface and the lower surface can be melted and penetrated and a necessary tensile stress is obtained, but a mesh having a square of 1.0 to 3.0 mm is usually used. Can be For forming the mesh, warp yarns and weft yarns may be alternately turned up and down to intersect to form a coarsely woven fabric, or warp yarns and weft yarns may be joined at intersections by fusion or the like.
【0016】上面と下面の熱可塑性樹脂層の間にネット
状芯体を配設するには、2枚の熱可塑性樹脂シートを押
出し、カレンダー等により成形しておき、この2枚の熱
可塑性樹脂シートの間にネット状芯体を挟み込み、ロー
ル等で加熱加圧して熱可塑性樹脂シートを加熱融着させ
ればよい。また、押出機のシリンダ先端に取り付けたク
ロスヘッドにネット状芯体を挿通しながら、その両側を
熱可塑性樹脂で被覆するようにしてもよい。これらの方
法により、ネット状芯体の両側の熱可塑性樹脂はネット
の網目に浸入して一体に融着されるので、剥離すること
がない。また、ゴム製のコンベヤベルトのように芯体入
れ工程や加硫工程を要せず、ネット状芯体を挟み込み、
両側の樹脂を加熱溶融させるだけで簡単に成形できる。
さらに、形成された長尺帯状体の長さ方向両端で接合す
る場合にも、通常のコードや帆布の芯体を用いたコンベ
ヤベルトと同様に扱える。In order to dispose a net-like core between the upper and lower thermoplastic resin layers, two thermoplastic resin sheets are extruded and molded by a calendar or the like, and the two thermoplastic resin sheets are formed. What is necessary is just to sandwich the net-shaped core between the sheets, heat and press with a roll or the like, and heat-bond the thermoplastic resin sheet. Alternatively, both sides of the net-shaped core may be covered with a thermoplastic resin while the net-shaped core is inserted into the crosshead attached to the end of the cylinder of the extruder. According to these methods, the thermoplastic resin on both sides of the net-shaped core body penetrates into the net of the net and is fused integrally, so that it does not peel off. Also, unlike a rubber conveyor belt, it does not require a core insertion step or vulcanization step, sandwiches the net-shaped core,
It can be easily molded simply by heating and melting the resin on both sides.
Further, even when the formed long belt-shaped body is joined at both ends in the length direction, it can be handled in the same manner as a conveyor belt using a normal cord or canvas core.
【0017】[0017]
【実施例】以下に本発明の樹脂製コンベヤベルトの実施
例を具体的な数値を用いて説明するが、本発明は以下の
実施例に限定されるものではない。EXAMPLES Examples of the resin conveyor belt of the present invention will be described below using specific numerical values, but the present invention is not limited to the following examples.
【0018】〔実施例1〕図1に示すように、上層1と
下層2を厚さ370μmのポリオレフィン系エラストマ
ーシート(三井石油化学社製の『ハイゼックス8200
B』と日本合成ゴム社製の『ダイナロン6200P』を
重量比7:3で配合したもの)とし、中間層3をポリエ
ステルモノフィラメントのネット状芯体(NBC工業社
製の『TB20』)とし、温度170℃、加圧力40k
g/cm2 の条件で熱圧着して、図2に示すように、3
層一体化構造の樹脂製コンベヤベルトを得た。Example 1 As shown in FIG. 1, an upper layer 1 and a lower layer 2 were made of a polyolefin elastomer sheet having a thickness of 370 μm (“HIZEX 8200 manufactured by Mitsui Petrochemical Co., Ltd.).
B) and “Dynalon 6200P” manufactured by Nippon Synthetic Rubber Co., Ltd. in a weight ratio of 7: 3), and the intermediate layer 3 is a polyester monofilament net-shaped core (“TB20” manufactured by NBC Industries, Ltd.). 170 ° C, pressure 40k
g / cm 2 and thermocompression bonding, as shown in FIG.
A resin conveyor belt having a layer integrated structure was obtained.
【0019】〔実施例2〕上層1および下層2として、
厚さ500μmのポリオレフィン系エラストマーシート
(モンテル社製の『キャタロイCA−10』)を用いた
以外は、実施例1と同じ条件で3層一体化構造の樹脂製
コンベヤベルトを得た。Example 2 As the upper layer 1 and the lower layer 2,
A resin-made conveyor belt having a three-layer integrated structure was obtained under the same conditions as in Example 1 except that a polyolefin-based elastomer sheet ("Cataalloy CA-10" manufactured by Montell Co.) having a thickness of 500 µm was used.
【0020】〔実施例3〕中間層3にポリアミドモノフ
ィラメントのネット状芯体(NBC工業社製の『『NB
20』)を用いた以外は、実施例1と同じ条件で3層一
体化構造の樹脂製コンベヤベルトを得た。Example 3 A polyamide monofilament net-shaped core ("NB" manufactured by NBC Industries, Ltd.) was used for the intermediate layer 3.
20)), except that a resin conveyor belt having a three-layer integrated structure was obtained under the same conditions as in Example 1.
【0021】〔実施例4〕中間層3にポリアミドモノフ
ィラメントのネット状芯体(NBC工業社製の『『NB
20』)を用いた以外は、実施例2と同じ条件で3層一
体化構造の樹脂製コンベヤベルトを得た。[Embodiment 4] A net-shaped core of polyamide monofilament ("NB" manufactured by NBC
20)), except that a resin conveyor belt having a three-layer integrated structure was obtained under the same conditions as in Example 2.
【0022】〔実施例5〕中間層3にポリエステル撚糸
のネット状芯体(NBC工業社製の『T−180』)を
用いた以外は、実施例1と同じ条件で3層一体化構造の
樹脂製コンベヤベルトを得た。Example 5 A three-layer integrated structure was prepared under the same conditions as in Example 1 except that a net-shaped core of polyester twisted yarn ("T-180" manufactured by NBC Industries) was used for the intermediate layer 3. A resin conveyor belt was obtained.
【0023】また、上記実施例1〜5のコンベヤベルト
と比較するためのコンベヤベルトを作製したので、次に
説明する。 〔比較例1〕厚さ250μmのポリウレタン系エラスト
マーシートの両面に接着剤を塗布して2枚の帆布(ポリ
エステル織布)で挟持し、さらにその片面に厚さ250
μmのポリウレタン系エラストマーシートを重ね合わ
せ、温度150℃、加圧力5kg/cm2 の条件で熱圧
着して4層一体化構造のコンベヤベルトを得た。Further, a conveyor belt for comparison with the conveyor belts of the above-mentioned Examples 1 to 5 was manufactured. [Comparative Example 1] An adhesive was applied to both sides of a polyurethane-based elastomer sheet having a thickness of 250 µm, sandwiched between two canvases (polyester woven cloth), and a sheet having a thickness of 250 was applied to one side.
A polyurethane elastomer sheet having a thickness of μm was overlaid and thermocompressed under the conditions of a temperature of 150 ° C. and a pressure of 5 kg / cm 2 to obtain a four-layer integrated belt.
【0024】〔比較例2〕上層1に厚さ370μmのポ
リオレフィン系エラストマーシート(三井石油化学社製
の『ハイゼックス8200B』と日本合成ゴム社製の
『ダイナロン6200P』を重量比7:3で配合したも
の)、下層2に上層1と同じ材質で厚さ200μmのポ
リオレフィン系エラストマーシートを用い、中間層3を
ポリエステルモノフィラメントのネット状芯体(NBC
工業社製の『TB20』)とし、温度170℃、加圧力
40kg/cm2 の条件で熱圧着して3層一体化構造の
コンベヤベルトを得た。Comparative Example 2 A polyolefin elastomer sheet having a thickness of 370 μm (“HIZEX 8200B” manufactured by Mitsui Petrochemical Co., Ltd. and “Dynalon 6200P” manufactured by Nippon Synthetic Rubber Co., Ltd.) was compounded in the upper layer 1 in a weight ratio of 7: 3. The lower layer 2 is made of the same material as the upper layer 1 and made of a polyolefin elastomer sheet having a thickness of 200 μm, and the intermediate layer 3 is made of a polyester monofilament net-shaped core (NBC).
The product was manufactured as “TB20” manufactured by Kogyo Co., Ltd.) and thermocompression-bonded under the conditions of a temperature of 170 ° C. and a pressure of 40 kg / cm 2 to obtain a conveyor belt having a three-layer integrated structure.
【0025】〔比較例3〕上層1と下層2を厚さ300
μmのポリエステル系エラストマーシート(東洋紡績社
製の『ベルプレンS−9002』)とし、中間層3をポ
リエステルモノフィラメントのネット状芯体(NBC工
業社製の『TB20』)とし、温度230℃、加圧力5
0kg/cm2 の条件で熱圧着して3層一体化構造のコ
ンベヤベルトを得た。Comparative Example 3 The upper layer 1 and the lower layer 2 were
μm polyester elastomer sheet ("Belprene S-9002", manufactured by Toyobo Co., Ltd.), the intermediate layer 3 is a polyester monofilament net-shaped core ("TB20", manufactured by NBC Industries, Ltd.), and the temperature is 230.degree. 5
Thermocompression bonding was performed under the condition of 0 kg / cm 2 to obtain a conveyor belt having a three-layer integrated structure.
【0026】〔比較例4〕厚さ500μmのポリオレフ
ィン系エラストマーシート(三井石油化学社製の『ハイ
ゼックス8200B』と日本合成ゴム社製の『ダイナロ
ン6200P』を重量比7:3で配合したもの)と、ポ
リアミドモノフィラメントのネット(NBC工業社製の
『NB20』)を、温度170℃、加圧力40kg/c
m2 の条件で熱圧着して2層構造のコンベヤベルトを得
た。Comparative Example 4 A polyolefin-based elastomer sheet having a thickness of 500 μm (a mixture of “HIZEX 8200B” manufactured by Mitsui Petrochemical Co., Ltd. and “Dynalon 6200P” manufactured by Nippon Synthetic Rubber Co., Ltd.) at a weight ratio of 7: 3. , A polyamide monofilament net (“NB20” manufactured by NBC Industries, Ltd.) at a temperature of 170 ° C. and a pressure of 40 kg / c.
Thermocompression bonding was performed under the conditions of m 2 to obtain a conveyor belt having a two-layer structure.
【0027】次に、上記のようにして作製した各実施例
および比較例のコンベヤベルトについての特性評価結果
をそれぞれ、表1、表2に示す。Next, Tables 1 and 2 show the characteristic evaluation results of the conveyor belts of the respective examples and comparative examples manufactured as described above.
【0028】なお、特性評価方法は、次に示すとおりで
ある。The characteristic evaluation method is as follows.
【0029】 糸ほつれ・毛羽立ち コンベヤベルト端部に金属板を当てた状態でベルトを3
00時間走行させた後のベルト端部の状態を目視で評価
した結果、「糸ほつれ・毛羽立ちがなかったもの」を
○、「糸ほつれ・毛羽立ちが有ったもの」を×として示
す。[0029] Thread fraying and fluffing. Conveyor Belt 3
As a result of visually evaluating the state of the belt end portion after running for 00 hours, "the case where there was no thread fraying and fuzzing" is shown as "O", and "the case where there is thread fraying and fuzzing" is shown as "x".
【0030】 柔軟性(曲げ剛性) 長さ50mm×幅3mmの試験片を純曲げ試験機により
曲率1cm-1まで曲げ、得られた曲げ変形曲線の傾きを
試験片の幅で割った値(曲げ剛性)により、「曲げ剛性
が60gf・cm2 /cm以下のもの」を○、「曲げ剛
性が60gf・cm2 /cm超のもの」を×として示
す。Flexibility (Bending rigidity) A test piece having a length of 50 mm and a width of 3 mm was bent to a curvature of 1 cm -1 by a pure bending tester, and a value obtained by dividing the slope of the obtained bending deformation curve by the width of the test piece (bending) (Rigidity), “bending rigidity of 60 gf · cm 2 / cm or less” is indicated by “○”, and “bending rigidity of more than 60 gf · cm 2 / cm” is indicated by ×.
【0031】 強度(1%モジュラス) 長さ300mm×幅25mm(標線間200mm)の試
験片を引張試験機により50mm/minの速度で引っ
張り、標線間で1%伸張したときの荷重を1%モジュラ
スとした。「1%モジュラスが5kN/m以上のもの」
を○、「1%モジュラスが5kN/m未満のもの」を×
として示す。Strength (1% Modulus) A test piece of 300 mm length × 25 mm width (200 mm between marked lines) was pulled at a speed of 50 mm / min by a tensile tester, and the load when 1% stretched between marked lines was 1%. % Modulus. "1% modulus is 5kN / m or more"
○, “× 1% modulus less than 5 kN / m” ×
As shown.
【0032】 カーリング コンベヤベルト作製後、ベルト端部の反りの状態によ
り、「ベルト端部の反りが5mm以下のもの」を○、
「ベルト端部の反りが5mm超のもの」をとして示す。After the production of the curling conveyor belt, “Circles with a belt end warpage of 5 mm or less” were evaluated as “Good” according to the state of the belt end warpage.
"A belt having a warpage of the end of more than 5 mm" is indicated as "Belt end".
【0033】[0033]
【表1】 [Table 1]
【0034】[0034]
【表2】 [Table 2]
【0035】表1、表2に明らかなように、本実施例に
係るものは、糸ほつれ・毛羽立ちがなく、柔軟性に優
れ、且つ強度が高く、しかもカーリングが発生しない。
しかし、比較例1のものは、帆布が使用されているの
で、糸ほつれ・毛羽立ちが見られた。また、比較例2の
ものは、上層と下層の厚さが異なるので、カーリングが
発生した。さらに、比較例3のものは、上層と下層がポ
リエステル系エラストマーシートからなるので、曲げ剛
性が高すぎて柔軟性に劣っている。そして、比較例4の
ものは、下層にポリオレフィン系エラストマーシートを
有しないので、強度が低く、また、カーリングが発生し
た。As is clear from Tables 1 and 2, the one according to the present embodiment has no fraying or fluff, has excellent flexibility, high strength, and does not cause curling.
However, in the case of Comparative Example 1, since the canvas was used, yarn fraying and fluffing were observed. In the case of Comparative Example 2, curling occurred because the thickness of the upper layer was different from that of the lower layer. Furthermore, in the case of Comparative Example 3, since the upper layer and the lower layer are made of the polyester elastomer sheet, the bending rigidity is too high and the flexibility is inferior. And the thing of the comparative example 4 does not have a polyolefin-type elastomer sheet in a lower layer, Therefore, intensity | strength is low and curling generate | occur | produced.
【0036】[0036]
【発明の効果】本発明の樹脂製コンベヤベルトは以上説
明したように構成されているので、次のような効果を奏
する。 ベルト剥離やカーリングが発生せず、汚染しにくく
て異物が発生しにくい。 比較的強度が高いので走行中に伸びにくく、スリッ
プすることなく、高効率で物品を搬送できる。 適度の柔軟性を有するので、スムーズにプーリに巻
回することが可能である。The resin conveyor belt of the present invention is constructed as described above, and has the following effects. Does not cause belt peeling or curling, is less likely to be contaminated, and is less likely to generate foreign matter. Since it has relatively high strength, it is difficult to stretch during traveling, and it is possible to transport articles with high efficiency without slipping. Since it has appropriate flexibility, it can be smoothly wound around the pulley.
【図1】本発明の樹脂製コンベヤベルトの分解斜視図で
ある。FIG. 1 is an exploded perspective view of a resin conveyor belt of the present invention.
【図2】本発明の樹脂製コンベヤベルトの断面図であ
る。FIG. 2 is a sectional view of the resin conveyor belt of the present invention.
1…上層(熱可塑性樹脂層) 2…下層(熱可塑性樹脂層) 3…中間層(ネット状芯体) 1: Upper layer (thermoplastic resin layer) 2: Lower layer (thermoplastic resin layer) 3: Middle layer (net-shaped core)
Claims (3)
とも1枚のネット状芯体が配設された樹脂製コンベヤベ
ルトであって、上記上下両面の熱可塑性樹脂層が同一材
質且つ同一厚みであり、上記上下両面の熱可塑性樹脂層
がネット状芯体の網目を通して一体に連結され、曲率1
cm-1におけるベルトの曲げ剛性が60gf・cm2 /
cm以下で且つベルト走行方向の1%伸張時の引っ張り
応力がベルト25mm幅当たり5kN/m以上であるこ
とを特徴とする樹脂製コンベヤベルト。1. A resin conveyor belt in which at least one net-shaped core is disposed between upper and lower thermoplastic resin layers, wherein the upper and lower thermoplastic resin layers have the same material and the same thickness. The thermoplastic resin layers on both the upper and lower surfaces are integrally connected through the mesh of the net-shaped core, and have a curvature of 1
The bending rigidity of the belt at cm -1 is 60 gf · cm 2 /
cm, and a tensile stress at 1% elongation in the belt running direction is 5 kN / m or more per 25 mm width of the belt.
フィン系エラストマーからなることを特徴とする請求項
1記載の樹脂製コンベヤベルト。2. The resin conveyor belt according to claim 1, wherein the upper and lower thermoplastic resin layers are made of a polyolefin elastomer.
ポリエステルまたはポリアミドを材質とするモノフィラ
メントまたは撚糸からなることを特徴とする請求項1ま
たは2記載の樹脂製コンベヤベルト。3. The resin conveyor belt according to claim 1, wherein the warp yarns and the weft yarns constituting the net-shaped core are made of a monofilament or a twisted yarn made of polyester or polyamide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2464197A JPH10217347A (en) | 1997-02-07 | 1997-02-07 | Conveyor belt made of resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2464197A JPH10217347A (en) | 1997-02-07 | 1997-02-07 | Conveyor belt made of resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10217347A true JPH10217347A (en) | 1998-08-18 |
Family
ID=12143770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2464197A Pending JPH10217347A (en) | 1997-02-07 | 1997-02-07 | Conveyor belt made of resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10217347A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009242007A (en) * | 2008-03-28 | 2009-10-22 | Nitta Ind Corp | Flat belt |
JP2012214286A (en) * | 2011-04-01 | 2012-11-08 | Chuko Kasei Kogyo Kk | Food conveying conveyer belt and manufacturing method therefor |
CN113124104A (en) * | 2020-01-15 | 2021-07-16 | 霓达株式会社 | Transmission belt |
-
1997
- 1997-02-07 JP JP2464197A patent/JPH10217347A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009242007A (en) * | 2008-03-28 | 2009-10-22 | Nitta Ind Corp | Flat belt |
JP2012214286A (en) * | 2011-04-01 | 2012-11-08 | Chuko Kasei Kogyo Kk | Food conveying conveyer belt and manufacturing method therefor |
CN113124104A (en) * | 2020-01-15 | 2021-07-16 | 霓达株式会社 | Transmission belt |
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