JP2001062905A5 - - Google Patents

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Publication number
JP2001062905A5
JP2001062905A5 JP1999238701A JP23870199A JP2001062905A5 JP 2001062905 A5 JP2001062905 A5 JP 2001062905A5 JP 1999238701 A JP1999238701 A JP 1999238701A JP 23870199 A JP23870199 A JP 23870199A JP 2001062905 A5 JP2001062905 A5 JP 2001062905A5
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JP
Japan
Prior art keywords
tube
cylindrical film
mold
producing
extruder
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
Application number
JP1999238701A
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Japanese (ja)
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JP2001062905A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP23870199A priority Critical patent/JP2001062905A/en
Priority claimed from JP23870199A external-priority patent/JP2001062905A/en
Publication of JP2001062905A publication Critical patent/JP2001062905A/en
Publication of JP2001062905A5 publication Critical patent/JP2001062905A5/ja
Pending legal-status Critical Current

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Description

【特許請求の範囲】
【請求項1】
予め筒状に成形したチューブを型に被せて加熱することにより、前記チューブを収縮させ、予め決められた周長を有する円筒状フィルムを得る製造方法において、前記型と前記円筒状フィルムとの間に気体を吹き込むことにより前記円筒状フィルムを前記型から外すことを特徴とする円筒状フィルムの製造方法。
【請求項2】
前記型として厚み方向に通気性を有する型を用い、前記型の内側から空気を吹き込むことを特徴とする請求項1に記載の円筒状フィルムの製造方法。
【請求項3】
前記型の端部のみに孔を設けたことを特徴とする請求項2に記載の円筒状フィルムの製造方法。
【請求項4】
前記型の表面にμm 以上の凹凸を有することを特徴とする請求項2または請求項3のいずれかに記載の円筒状フィルムの製造方法。
【請求項5】
前記チューブが、環状ダイスの先端から押出し機の押し出しによって吐出され、前記吐出物を全幅で挟持する挟持部材を通過させて引き取ることにより得られる部材であることを特徴とする請求項2から4のいずれかに記載の円筒状フィルムの製造方法。
【請求項6】
前記チューブが、環状ダイスの先端から押出し機の押し出しによって吐出され、前記吐出物を全幅で挟持する挟持部材を通過させて引き取った後、挟持部材に起因する折り目を除去することにより得られる部材であることを特徴とする請求項2から4のいずれかに記載の円筒状フィルムの製造方法。
【請求項7】
前記チューブが、環状ダイスの先端から押出し機の押し出しによって吐出することで得られた部材であり、かつ、前記環状ダイスのダイギャップより、前記チューブの厚みの方が薄いことを特徴とする請求項2から6のいずれかに記載の円筒状フィルムの製造方法。
【請求項8】
前記チューブが、環状ダイスの先端から押出し機の押し出しによって吐出することで得られた部材であり、かつ、吐出速度よりも前記チューブの引き取り速度が速いことを特徴とする請求項2から7のいずれかに記載の円筒状フィルムの製造方法。
【請求項9】
前記チューブが、環状ダイスの先端から押出し機の押し出しによって吐出することで得られた部材であり、かつ前記環状ダイスのダイス直径に対して、前記チューブの直径が50から400%の範囲にあることを特徴とする請求項2から8のいずれかに記載の円筒状フィルムの製造方法。
【請求項10】
環状ダイスの先端から押出し機の押し出しによって吐出されたチューブ状溶融物に大気圧以上の気体を吹き込むことにより前記チューブ状溶融物を膨張させながら連続的に成形させて、チューブを得ることを特徴とする請求項2から9のいずれかに記載の円筒状フィルムの製造方法。
【請求項11】
前記チューブが、環状ダイスの先端から押出し機の押し出しによって吐出することで得られた部材であり、かつ、前記押出し機が2軸押出し機であることを特徴とする請求項2から10のいずれかに記載の円筒状フィルムの製造方法。
【請求項12】
前記押し出し機によって得られた前記チューブの成形時に、前記チューブが前記部材の長手方向に対して直角方向に断続的に切断して得られることを特徴とする請求項2から11のいずれかに記載の円筒状フィルムの製造方法。
【請求項13】
電子写真装置に用いられる中間転写ベルト又は転写搬送ベルトの製造方法であって、
(i)予め筒状に成形した熱可塑性樹脂を含むチューブを型に被せて加熱することにより、前記チューブを熱収縮させ、円筒状フィルムを形成する工程と、
(ii)前記型と前記円筒状フィルムとの間に気体を吹き込むことにより、前記円筒状フィルムを前記型から外す工程と、を有することを特徴とする中間転写ベルト又は転写搬送ベルトの製造方法。
[Claims]
[Claim 1]
In a manufacturing method for obtaining a cylindrical film having a predetermined peripheral length by shrinking the tube by covering a mold with a tube formed into a tubular shape in advance and heating the mold, between the mold and the cylindrical film. A method for producing a cylindrical film, which comprises removing the cylindrical film from the mold by blowing a gas into the mold.
2.
The method for producing a cylindrical film according to claim 1, wherein a mold having air permeability in the thickness direction is used as the mold, and air is blown from the inside of the mold.
3.
The method for producing a cylindrical film according to claim 2, wherein holes are provided only at the ends of the mold.
4.
The method for producing a cylindrical film according to claim 2, wherein the surface of the mold has irregularities of 3 μm or more.
5.
The tube according to claim 2 to 4, wherein the tube is discharged from the tip of an annular die by extrusion of an extruder, and is a member obtained by passing and taking over a holding member that holds the discharged material in its full width. The method for producing a cylindrical film according to any one.
6.
A member obtained by ejecting the tube from the tip of an annular die by extrusion of an extruder, passing the ejected material through a holding member that holds the discharged material in its full width, and then removing the crease caused by the holding member. The method for producing a cylindrical film according to any one of claims 2 to 4, wherein the film is produced.
7.
The claim is that the tube is a member obtained by ejecting from the tip of an annular die by extrusion of an extruder, and the thickness of the tube is thinner than the die gap of the annular die. The method for producing a cylindrical film according to any one of 2 to 6.
8.
Any of claims 2 to 7, wherein the tube is a member obtained by ejecting the tube from the tip of an annular die by extrusion of an extruder, and the taking-out speed of the tube is faster than the ejection speed. The method for producing a cylindrical film described in Crab.
9.
The tube is a member obtained by ejecting the tube from the tip of the annular die by extrusion of an extruder, and the diameter of the tube is in the range of 50 to 400% with respect to the die diameter of the annular die. The method for producing a cylindrical film according to any one of claims 2 to 8.
10.
A feature is that a tube is obtained by continuously molding the tubular melt while expanding it by blowing a gas having an atmospheric pressure or higher into the tubular melt discharged from the tip of an annular die by extrusion of an extruder. The method for producing a cylindrical film according to any one of claims 2 to 9.
11.
Any of claims 2 to 10, wherein the tube is a member obtained by ejecting from the tip of an annular die by extrusion of an extruder, and the extruder is a twin-screw extruder. The method for producing a cylindrical film according to.
12.
During molding of the tube obtained by the extruder, to any one of claims 2 to 11, wherein the tube is characterized in that it is obtained by intermittently cutting at right angles the direction of the longitudinal direction of the member The method for producing a cylindrical film according to the description.
13.
A method for manufacturing an intermediate transfer belt or a transfer transfer belt used in an electrophotographic apparatus.
(I) A step of forming a cylindrical film by heat-shrinking the tube by covering a mold with a tube containing a thermoplastic resin molded in advance into a tubular shape and heating the tube.
(Ii) A method for manufacturing an intermediate transfer belt or a transfer transfer belt, which comprises a step of removing the cylindrical film from the mold by blowing a gas between the mold and the cylindrical film.

JP23870199A 1999-08-25 1999-08-25 Manufacture of cylindrical film and cylindrical film obtained thereby Pending JP2001062905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23870199A JP2001062905A (en) 1999-08-25 1999-08-25 Manufacture of cylindrical film and cylindrical film obtained thereby

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23870199A JP2001062905A (en) 1999-08-25 1999-08-25 Manufacture of cylindrical film and cylindrical film obtained thereby

Publications (2)

Publication Number Publication Date
JP2001062905A JP2001062905A (en) 2001-03-13
JP2001062905A5 true JP2001062905A5 (en) 2006-07-20

Family

ID=17034015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23870199A Pending JP2001062905A (en) 1999-08-25 1999-08-25 Manufacture of cylindrical film and cylindrical film obtained thereby

Country Status (1)

Country Link
JP (1) JP2001062905A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008168523A (en) * 2007-01-12 2008-07-24 Sekisui Plastics Co Ltd Plug, polypropylene resin foamed sheet manufacturing apparatus, and polypropylene resin foamed sheet manufacturing method
JP4598103B2 (en) * 2008-06-02 2010-12-15 キヤノン化成株式会社 Manufacturing method of blade member of developer amount regulating blade and manufacturing method of developer amount regulating blade
US10698347B2 (en) * 2018-12-04 2020-06-30 Canon Kabushiki Kaisha Electrophotographic belt and image forming apparatus

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