JP3316230B2 - 樹脂ベルトのエンドレス施工方法 - Google Patents

樹脂ベルトのエンドレス施工方法

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Publication number
JP3316230B2
JP3316230B2 JP17564592A JP17564592A JP3316230B2 JP 3316230 B2 JP3316230 B2 JP 3316230B2 JP 17564592 A JP17564592 A JP 17564592A JP 17564592 A JP17564592 A JP 17564592A JP 3316230 B2 JP3316230 B2 JP 3316230B2
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JP
Japan
Prior art keywords
belt
endless
hot
endless construction
resin belt
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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.)
Expired - Fee Related
Application number
JP17564592A
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English (en)
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JPH0615740A (ja
Inventor
龍 米田
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Bando Chemical Industries Ltd
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Bando Chemical Industries Ltd
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Priority to JP17564592A priority Critical patent/JP3316230B2/ja
Publication of JPH0615740A publication Critical patent/JPH0615740A/ja
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Publication of JP3316230B2 publication Critical patent/JP3316230B2/ja
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1286—Stepped joint cross-sections comprising at least one bevelled joint-segment
    • B29C66/12861—Stepped joint cross-sections comprising at least one bevelled joint-segment comprising at least two bevelled joint-segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/223—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a triangle wave or of a sawtooth wave, e.g. zigzagged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4324—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms for making closed loops, e.g. belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2029/00—Belts or bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Belt Conveyors (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、樹脂ベルトのエンドレ
ス施工方法に関する。
【０００２】
【従来の技術、背景および発明が解決しようとする課
題】樹脂製のベルトのエンドレス施工は、図１に示すよ
うに、熱プレス機の上熱盤１と下熱盤２でベルト３のエ
ンド部を圧着し、プレス温度４２３〜４３３Ｋ、面圧２
９４〜４９０ｋＰａ、プレス時間１０〜３０分、プレス
後の冷却温度３３３Ｋ以下という条件で一般的に行われ
ている。しかし、この上熱盤１と下熱盤２で圧着される
部分の極近傍のベルトに熱の影響で表面の艶や摩擦係数
の変化する、いわゆる「焼境部分」４が、熱プレスした
ベルトの全幅に現れることがある。この部分は、外観的
に問題となるのはもちろん、物品搬送時に汚れが付着し
やすく、その結果、搬送物が引っ掛かるという問題も生
じた。そのため、従来は以下のような方法で焼境部分４
における艶や摩擦係数の変化を抑制する方法が採られて
いた。
【０００３】すなわち、図２(a) に示すように、「上熱
盤１、下熱盤２よりも広い鉄板５（又はアルミ板等）を
該熱盤とベルトとの間に介在させて、焼境部分相当箇所
のベルトに温度勾配をつけて焼境部分の艶の変化を抑制
する方法」、また、図２(b)に示すように、「鉄板５と
ベルト３との間にシリコーン処理離型紙６のようなベル
ト３の表面性状と近似する素材を介装し、焼境部分の艶
の変化を少なくする方法」、さらに、図２(c) に示すよ
うに、「上下の熱盤１、２の端部に冷却水の流通する管
７を配設し、焼境部分の温度上昇を防止し、艶の変化を
抑制する方法」が行われていた。ところが、これら従来
の方法では焼境部分にある程度の温度勾配はつくが、艶
の変化は充分に抑えられない。特に、図２(c) に示すよ
うな冷却水をプレス熱盤内に通す方法では熱盤自体の温
度上昇が抑制されるので、エンドレス化の作業性が低下
するという問題が発生する。
【０００４】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、樹脂
ベルトを熱プレス機でエンドレス施工する際の焼境部分
におけるベルト表面性状の変化が少ない施工方法を提供
することにある。
【０００５】
【課題を解決するための手段】上記目的を達成するため
に本発明の要旨は、樹脂ベルトの両エンドを突き合わせ
てプレス機の上下の熱盤で加熱圧着することによりエン
ドレス施工を行う方法において、樹脂ベルトの両エンド
を突き合わせた後、焼境部分相当箇所の樹脂ベルトにＣ
ａＯ、ＳｉＯ 2 、 ＭｇＯまたはＡｌ 2 Ｏ 3 の微粉末を塗布
し、次いで加熱圧着することを特徴とする樹脂ベルトの
エンドレス施工方法にある。
【０００６】エンドレス施工に当たって樹脂ベルトのエ
ンド部分の成形としては、一般的に行われている、フィ
ンガー方式、ラップ方式、ダブルフィンガー方式等を採
用することができる。フィンガー方式とは、「図３(a)
に示すように、ベルトの両エンド部分を打ち抜いて複数
個の鋭角状突出片８を形成し、これら鋭角状突出片８を
互いに突き合わせる方式」であり、ラップ方式とは、
「図３(b) に示すように、ベルトの両エンド部分を薄肉
９ａ、９ｂとし、両薄肉部分９ａ、９ｂを重ねる方式」
であり、ダブルフィンガー方式とは、「図３(c) に示す
ように、２層のフィンガー方式のものを長手方向に少し
ずらして重ねたもので、各層の鋭角状突出片８の位置を
ずらして突き合わせる方式」である。
【０００７】焼境部分相当箇所に塗布する微粉末として
は、例えば、無機系のＣａＯ、ＳｉＯ2 、ＭｇＯ、Ａｌ
2 Ｏ3 等の微粉末を用いることができるが、これ以外に
も樹脂本来の特性を損なわないものなら、他の無機系微
粉末または有機系微粉末を使用することもできる。そし
て、その塗布方法としては、例えばパフのような道具で
ベルトの全幅に擦り付けるように塗布するか、または、
微粉末をメタノール等の揮発性の液体に分散させておい
てハケ等で塗布する方法を採ることもできる。
【０００８】なお、微粉末の粒径により熱プレス後のベ
ルト表面性状が変化するので、熱プレス条件に合わせて
適宜微粉末の種類・粒径を選択するのが好ましい。
【０００９】焼境部分相当箇所に微粉末を塗布したベル
トの加熱圧着方法としては、上記した公知の方法（図２
(a) 、(b) 、(c))のいずれかを行うことができる。
【００１０】
【作用】加熱圧着前に焼境部分相当箇所に予め微粉末を
塗布しておくことにより、この微粉末が艶消しの役目を
するので、熱プレス後の焼境部分の艶の変化が少なく、
また微粉末が表面の凹凸状態を適正に調整する役目をす
るので、焼境部分が特異な表面状態を呈して摩擦係数が
異常に高くなることはなく、焼境部分とベルト本体部と
の摩擦係数に差は生じない。かくして、表面性状に差が
なくなるので、搬送中の汚れも付着しにくい。
【００１１】
【実施例】以下に本発明の実施例を図面に基づいて説明
する。使用ベルトとしては、図４に示すように、ポリエ
ステル織布１０を心体とするポリウレタン製のベルト１
１（総厚０．５１mm、幅３００mm) のエンド部分をフィ
ンガー状に打ち抜き、両エンド部分を突き合わせて、図
５に示すように焼境が生ずるであろうと思われる部分
（焼境部分相当箇所、斜線部）に約２０mmの範囲に亘っ
てタルク（比表面積１ｍ2/ｇ、平均粒径１０〜１２μｍ
のもの）をパフを用いて塗布し、図２(b) に示す方法に
より、プレス温度４２３Ｋ、面圧４９０ｋＰａ、プレス
時間１５分の条件でプレスを行い、プレス後３２３Ｋま
で冷却し、エンドレスベルトを得た。また、比較のため
に、図２(b) に示すような焼境抑制方法を採ったものに
ついて、タルクを塗布しないことを除く他の条件は上記
本実施例と同じとしてエンドレスベルトを作製した。そ
して、加熱圧着後にエンドレス施工部分を観察すると、
本実施例のベルトの焼境部分相当箇所に艶の変化は殆ど
見られず、本体部分と略同等の外観を呈していた。しか
し、タルクを塗布せずにエンドレス施工を行った比較例
のベルトには、焼境部分に明らかな艶の変化が見られ
た。
【００１２】次に、これらのベルトの汚れの付着しにく
さを評価するために、図６に示す構成のプーリ１２（径
３０mm) 、１３（径３０mm) 、１４（径６５mm) に懸回
して、速度３０ｍ／分で５０万回転させた後の表面の汚
れ度合いを目視評価した。なお、プーリ１５、１６の径
は２５mmである。また、汚れの落ち易さを評価するため
に、ベルト表面に鉛筆の粉（４Ｂ）を付着させた後に、
メタノールを含ませた布で軽く拭き取って、汚れが落ち
るかどうかを目視評価した。これらの目視評価結果と併
せてヘイドン１０型試験機で測定した各ベルトの静摩擦
係数を以下の表１に示す。
【００１３】
【表１】
【００１４】表１に明らかなように、本発明による処理
を施したエンドレスベルトの焼境部分の静摩擦係数は、
ベルト本体のその数値と殆ど差がなく、汚れの付着しに
くさ、汚れの落ち易さもベルト本体と遜色がない。しか
し、従来法で作製したエンドレスベルトは、焼境部分で
表面性状が急激に変化するので、静摩擦係数が高く、汚
れが付着しやすく、しかも汚れが落ちにくい。
【００１５】
【発明の効果】本発明に係る方法でエンドレス化を行っ
たベルトは、加熱圧着時の焼境部分とその他の部分との
外観・摩擦係数に差がなく、焼境部分に汚れが付着しに
くくてしかも汚れが落ちやすい。このように、本発明に
よりベルト全長に亘って一様な表面性状のベルトを提供
することができる。
【図面の簡単な説明】
【図１】ベルトの熱プレス方法を説明する斜視図であ
る。
【図２】図２(a) 〜(C) は従来の焼境抑制方法を採った
熱プレス方法を説明する図である。
【図３】図３(a) 〜(c) はエンドレス施工前のベルトの
エンド部分の加工方法を説明する図で、図３(a) はフィ
ンガー方式、図３(b) はラップ方式、図３(c) はダブル
フィンガー方式をそれぞれ示す斜視図である。
【図４】ベルト走行試験に用いたベルトの断面を示す図
である。
【図５】微粉末を塗布する部分を説明する図である。
【図６】ベルト走行試験方法を説明する図である。
【符号の説明】
１…上熱盤 ２…下熱盤 ３…ベルト ４…焼境部分 ５…鉄板 ６…離型紙 ７…管 ８…鋭角状突出片 ９…薄肉部分 １０…ポリエステル織布 １１…ベルト １２、１３、１４、１５、１６…プーリ

Claims (1)

    (57)【特許請求の範囲】
  1. 【請求項１】 樹脂ベルトの両エンドを突き合わせてプ
    レス機の上下の熱盤で加熱圧着することによりエンドレ
    ス施工を行う方法において、樹脂ベルトの両エンドを突
    き合わせた後、焼境部分相当箇所の樹脂ベルトにＣａ
    Ｏ、ＳｉＯ 2 、ＭｇＯまたはＡｌ 2 Ｏ 3 の微粉末を塗布
    し、次いで加熱圧着することを特徴とする樹脂ベルトの
    エンドレス施工方法。
JP17564592A 1992-07-02 1992-07-02 樹脂ベルトのエンドレス施工方法 Expired - Fee Related JP3316230B2 (ja)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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JPH0615740A JPH0615740A (ja) 1994-01-25
JP3316230B2 true JP3316230B2 (ja) 2002-08-19

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001018293A (ja) * 1999-07-09 2001-01-23 Bridgestone Corp Ｅｖａシートの接合方法
JP5145730B2 (ja) 2006-07-26 2013-02-20 株式会社リコー 定着ベルト基材、及びその製造方法、定着ベルト、定着装置並びに画像形成装置
JP4965213B2 (ja) * 2006-09-29 2012-07-04 ニチアス株式会社 変性ポリ四フッ化エチレン成形体の溶着方法
JP4972434B2 (ja) * 2007-03-13 2012-07-11 ニッタ株式会社 平ベルトの融着用治具および融着プレス装置
WO2014001172A1 (de) * 2012-06-25 2014-01-03 Voith Patent Gmbh Verfahren zur herstellung eines endlosen folienbandes
JP5913707B1 (ja) * 2015-08-31 2016-04-27 株式会社ディムコ スチール被覆の樹脂ベルト

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