JP2005161555A5 - - Google Patents

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Publication number
JP2005161555A5
JP2005161555A5 JP2003400053A JP2003400053A JP2005161555A5 JP 2005161555 A5 JP2005161555 A5 JP 2005161555A5 JP 2003400053 A JP2003400053 A JP 2003400053A JP 2003400053 A JP2003400053 A JP 2003400053A JP 2005161555 A5 JP2005161555 A5 JP 2005161555A5
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JP
Japan
Prior art keywords
resin composition
thermoplastic resin
annular die
belts
belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2003400053A
Other languages
Japanese (ja)
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JP2005161555A (en
JP4266792B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2003400053A priority Critical patent/JP4266792B2/en
Priority claimed from JP2003400053A external-priority patent/JP4266792B2/en
Publication of JP2005161555A publication Critical patent/JP2005161555A/en
Publication of JP2005161555A5 publication Critical patent/JP2005161555A5/ja
Application granted granted Critical
Publication of JP4266792B2 publication Critical patent/JP4266792B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Claims (6)

複数の感光ドラムを具備し、隣り合う感光ドラムの軸間距離がＰｍｍである画像形成装置に用いられる中間転写用もしくは転写材搬送用のベルトの製造方法であって、
（ｉ）押出し機の先端に、スパイラル溝の条数がＮの環状ダイスを具備してなる押出し装置の該環状ダイスから熱可塑性樹脂組成物を押出す工程と、
（ｉｉ）押出された熱可塑性樹脂組成物を内周長がＬｍｍのエンドレスベルトに成形する工程と、を有し、
前記工程（ｉ）において、該熱可塑性樹脂組成物の押出し時の圧力変動幅が６％以下であり、且つ前記Ｎ、Ｌ及びＰが、下記式（１）で示される関係を満たすものであることを特徴とするベルトの製造方法；
Ｌ÷Ｎ≦３Ｐ （１）。 A method of manufacturing a belt for intermediate transfer or transfer material transport used in an image forming apparatus comprising a plurality of photosensitive drums and having an axial distance of Pmm between adjacent photosensitive drums ,
(I) a step of extruding a thermoplastic resin composition from an annular die of an extrusion apparatus comprising an annular die having N spiral grooves at the tip of the extruder ;
(Ii) forming an extruded thermoplastic resin composition into an endless belt having an inner circumferential length of Lmm, and
In the step (i), the pressure fluctuation range at the time of extrusion of the thermoplastic resin composition is 6% or less, and the N, L, and P satisfy the relationship represented by the following formula (1). the method of manufacturing features and to behenate belt that;
L ÷ N ≦ 3P (1) . 前記Ｎ、Ｌ及びＰが下記式で示される関係を満たす請求項１に記載のベルトの製造方法；
Ｌ÷Ｎ≦１．５Ｐ。 The method for producing a belt according to claim 1, wherein the N, L, and P satisfy a relationship represented by the following formula;
L ÷ N ≦ 1.5P. 前記工程（ｉｉ）において、エンドレスベルトの直径を前記環状ダイスの外側ダイリップの内径で除したブロー比が１．３〜３となるように成形する請求項１又は２に記載のベルトの製造方法。 In the step (ii), the manufacturing method of the belts according to claim 1 or 2 blow ratio and the diameter of the endless belt divided by the inner diameter of the outer die lip of the annular die is shaped such that 1.3 to 3 . 前記工程（ｉ）に用いる前記押出し装置が、該押出し機と前記環状ダイスとの間にギアポンプを有し、該ギアポンプは、ギア一回転あたりの熱可塑性樹脂組成物の吐出量が、エンドレスベルト一本の体積の２倍未満である請求項１〜３のいずれかに記載のベルトの製造方法。 The extrusion device used in the step (i) has a gear pump between the extruder and the annular die, and the gear pump discharges the thermoplastic resin composition per one rotation of the gear. belts method according to any one of claims 1 to 3, which is less than twice of the volume. 前記工程（ｉ）が、前記押し出し機のスクリュー先端より下流側かつ、前記環状ダイスへの樹脂流入口より上流側の位置に配設した樹脂圧センサーで測定された樹脂圧が一定になるように、該スクリューの回転数にフィードバック制御する工程を含む請求項１〜４のいずれかに記載のベルトの製造方法。 Wherein step (i) is the extruder downstream and from the screw tip of, so that the resin pressure measured at the resin pressure sensor over which is arranged at the position of the resin inlet of the upstream to the annular die is constant to, belts method according to any one of claims 1 to 4 including the step of feedback controlling the rotational speed of the screw. 前記工程（ｉｉ）が、下記式（４）を満たすスクリューを用いて前記熱可塑性樹脂組成物をインフレーション成形してエンドレスベルトとする工程を含む請求項１〜５のいずれかに記載のベルトの製造方法；
１．０×Ｄ３≦ＣＲ≦３．０×Ｄ３ （４）
上記式（４）中、
Ｄ１＝インフレーション成形機のホッパーに投入するペレットの見かけ比重（ｇ／ｃｍ3）
Ｄ２＝インフレーション成形後のフィルムの比重（ｇ／ｃｍ3）
Ｄ３＝Ｄ２／Ｄ１
ＣＲ＝スクリューの圧縮比。 Wherein step (ii) is, the belts according to any one of claims 1 to 5 including the step of the endless belt by inflation molding the thermoplastic resin composition using a screw satisfying the following formula (4) Production method;
1.0 × D3 ≦ CR ≦ 3.0 × D3 (4)
In the above formula (4) ,
D1 = apparent specific gravity (g / cm 3 ) of pellets put into a hopper of an inflation molding machine
D2 = specific gravity of the film after inflation molding (g / cm 3 )
D3 = D2 / D1
CR = screw compression ratio.
JP2003400053A 2003-11-28 2003-11-28 Belt manufacturing method Expired - Fee Related JP4266792B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003400053A JP4266792B2 (en) 2003-11-28 2003-11-28 Belt manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003400053A JP4266792B2 (en) 2003-11-28 2003-11-28 Belt manufacturing method

Publications (3)

Publication Number Publication Date
JP2005161555A JP2005161555A (en) 2005-06-23
JP2005161555A5 true JP2005161555A5 (en) 2007-01-18
JP4266792B2 JP4266792B2 (en) 2009-05-20

Family

ID=34724422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003400053A Expired - Fee Related JP4266792B2 (en) 2003-11-28 2003-11-28 Belt manufacturing method

Country Status (1)

Country Link
JP (1) JP4266792B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5013766B2 (en) * 2005-07-14 2012-08-29 株式会社ブリヂストン Conductive endless belt and image forming apparatus using the same
JP5105014B1 (en) * 2012-03-23 2012-12-19 富士ゼロックス株式会社 Method for manufacturing tubular body
JP2017080949A (en) * 2015-10-26 2017-05-18 キヤノン株式会社 Annular die and method for manufacturing tube-like object
KR102155189B1 (en) * 2020-03-31 2020-09-14 대림비닐공업 주식회사 Apparatus for manufacturing plastic bags
WO2024075632A1 (en) * 2022-10-06 2024-04-11 株式会社クラレ Device for producing inflation film

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