JP5282672B2 - 耐熱性樹脂ベルトの製造方法 - Google Patents
耐熱性樹脂ベルトの製造方法 Download PDFInfo
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- JP5282672B2 JP5282672B2 JP2009143295A JP2009143295A JP5282672B2 JP 5282672 B2 JP5282672 B2 JP 5282672B2 JP 2009143295 A JP2009143295 A JP 2009143295A JP 2009143295 A JP2009143295 A JP 2009143295A JP 5282672 B2 JP5282672 B2 JP 5282672B2
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- resistant resin
- adhesive composition
- belt
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
- B29C65/4885—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their composition being non-plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
- B29C65/526—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by printing or by transfer from the surfaces of elements carrying the adhesive, e.g. using brushes, pads, rollers, stencils or silk screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/90—Measuring or controlling the joining process
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/08—Felts
- D21F7/086—Substantially impermeable for transferring fibrous webs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G3/00—Belt fastenings, e.g. for conveyor belts
- F16G3/10—Joining belts by sewing, sticking, vulcanising, or the like; Constructional adaptations of the belt ends for this purpose
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
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- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/40—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/82—Testing the joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/82—Testing the joint
- B29C65/8253—Testing the joint by the use of waves or particle radiation, e.g. visual examination, scanning electron microscopy, or X-rays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fixing For Electrophotography (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Electrophotography Configuration And Component (AREA)
Description
α両端α2の互いに異なる面を、例えば図1(c)にモデル的に示すように
フライス盤のドリル部211と、このフライス盤の加工面に対して耐熱性樹脂シートαを斜めに保持するジグ210とを用いて、切削加工して図1(d)に側面図を示すように形成する。このとき傾斜状薄肉部は、先端部分の厚さを15〜30μmとして、傾斜形状に切削加工されていると、加工時及びその後の取り扱いにおいて、耐熱性樹脂シートの先端に欠けが生じることがなく、そのために、歩留まりよく安定した量産が可能となる。
表1に示す原料、及び、表2に示す配合(重量比)によって計20種類の接着剤組成物(実施例1〜7、比較例1〜13)を得た。2種類の接着剤組成物を混合する際には、自転しながら公転するミキサーを用いて行い、その後、減圧脱法処理をおこなった。
上記の接着剤組成物の23℃での粘度(以下「粘度」とする)は、B型回転粘度計を用いて測定した。
上記それぞれの接着剤組成物の硬化(硬化条件:150度1時間)後の引張試験での切断時伸びをJIS K 6249に準拠して調べた。結果を表3に”伸び率(%)”として示した。
400メッシュカレンダータイプ(メッシュ厚さ44μm)のステンレスメッシュを用い、巾5mm、長さ400mmのパターンで、厚さが10〜12μmとなるように、厚さ125μmのポリイミドフィルム:ユーピレックス125S(宇部興産製)に対してスクリーン印刷をおこなった。このときの印刷の状態を目視(かすれやにじみの発生)及びマイクロメーターによる厚さ(厚さむらの発生)を調べた。このとき、かすれ、にじみがなく、その結果、連続印刷が可能であると判断される場合を充分に良好であるとして「○」、かすれ、にじみが発生し、厚さむらが生じる(マイクロメーターで測定される厚さの分布が20%以下である)場合を不充分であるとして「×」として評価した。
ポリイミド樹脂製シート(ユーピレックス125S(宇部興産社製)、厚さ125μm、大きさ:447mm×400mm)の長辺側の両端の互いに異なる面を端部から5mmの幅で、その端に向かってシートの厚さが徐々に薄くなり、端部厚さが19〜22μmとなるように切削加工を行った。この傾斜面の両方の面に上記で調製した接着剤組成物を、それぞれ接着剤層の厚さが10〜12μmとなるようにスクリーン印刷した後、両傾斜面を重ね合わせ、次いで、この重ね合わせ部を加圧・加熱バーを用いて130℃で3分間加圧・加熱し、その後、無加圧状態で250℃・30分の熱処理を行い、接着剤を完全硬化させた。このベルトを20mm巾に切断し、接合部を含む部分について、JIS K6249に準拠して引張試験を行い、接合部の引張強度を測定した。この強度を接合部を含まない部分での引張強度と比較し、接合部の引張強度が接合部を含まない部分での引張強度に比べ50%未満と低く、または、20〜50倍の光学顕微鏡で破断面を観察したときに、切断時の破断が、接合部が接着剤から剥がれて発生している場合を不充分として「×」とし、それ以外を充分であるとして「○」として評価した。このせん断引張強度は室温と、190℃(画像形成装置の定着ベルトの要求耐熱耐久性を想定)との、2つの温度条件でそれぞれおこなった。
厚さが125μmのポリイミドシート(ユーピレックス125S(宇部興産社製)を448.5mm×400mmの大きさに切出し、このポリイミドシートの長辺側の両端の互いに異なる面を端部から7mmの幅で、その端に向かってシートの厚さが徐々に薄くなり、端部厚さが19〜22μmとなるように切削加工を行った。この傾斜面の両方の面全体に上記で調製した接着剤組成物のうちの実施例1〜7の接着剤組成物を、それぞれ接着剤層の厚さが10〜12μm、切削加工部全体に接着剤が被覆するようにスクリーン印刷した後、次いで、このシートを直径が140.5mmの、表面に多数の吸気孔が設けられたマンドレルコアに吸引させ、吸着させつつ巻き付け、傾斜面同士を重ね合わせる(接合部)。この接合部を130℃、3分間の条件で加圧・加熱し、接着剤を1次硬化させ、次いで、このように接合されたポリイミド製ベルトに外径139.4mmのアルミニウムからなるマンドレルを挿入し、250℃で30分間熱処理して、接着剤組成物を完全硬化させて、本発明にかかる7種類の耐熱性樹脂ベルトを得た。これら耐熱性樹脂ベルトの表層接合部全体と、接合端部から20mmの範囲までを、竹棒(直径0.5〜0.8mm)を束ね箒状に形成してなるブラシを押し付けながら、約50rpmで回転させて、接合部からはみ出した接着剤をかきとった。
Claims (2)
- 耐熱性樹脂シートの一方の端部の一面に該端部の端に向かって該耐熱性樹脂シートの厚さが徐々に薄くなる第1の傾斜状薄肉部と、該耐熱性樹脂シートの他方の端の前記一面とは異なる面に該端部の端に向かって該耐熱性樹脂シートの厚さが徐々に薄くなる第2の傾斜状薄肉部と、を形成する傾斜状薄肉部形成工程、
前記2つの傾斜状薄肉部の傾斜面の少なくとも一方に接着剤組成物をスクリーン印刷法により塗布する接着剤塗布工程、
前記2つの傾斜状薄肉部の傾斜面同士を貼り合わせる貼り合せ工程、及び、
前記接着剤組成物を硬化させる接着剤硬化工程
を順次有する耐熱性樹脂ベルト製造方法において、
前記接着剤組成物として、固形成分中に酸化鉄(III)6.5〜9.9重量%を含有する付加重合型シリコーン系接着剤組成物を用い、
前記付加重合型シリコーン系接着剤組成物の硬化前の23℃での粘度を、50Pa・s以上100Pa・s以下とし、そして、
前記接着剤組成物の硬化後の引張試験での切断時伸びを、250%以上とする
ことを特徴とする耐熱性樹脂ベルトの製造方法。 - 前記耐熱性無端ベルトの外側表面に、導電性シリコーンゴムからなる弾性層、及び、フッ素樹脂からなる離型層を順次形成する、弾性層及び離型層形成工程を有していることを特徴とする請求項1に記載の耐熱性樹脂ベルトの製造方法。
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