JPH05321189A - Doctor blade - Google Patents

Doctor blade

Info

Publication number
JPH05321189A
JPH05321189A JP15435492A JP15435492A JPH05321189A JP H05321189 A JPH05321189 A JP H05321189A JP 15435492 A JP15435492 A JP 15435492A JP 15435492 A JP15435492 A JP 15435492A JP H05321189 A JPH05321189 A JP H05321189A
Authority
JP
Japan
Prior art keywords
doctor blade
thermoplastic resin
fiber
roll
paper
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
JP15435492A
Other languages
Japanese (ja)
Inventor
Shunichi Hagita
俊一 萩田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seisakusho Kk Dr
Original Assignee
Seisakusho Kk Dr
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seisakusho Kk Dr filed Critical Seisakusho Kk Dr
Priority to JP15435492A priority Critical patent/JPH05321189A/en
Publication of JPH05321189A publication Critical patent/JPH05321189A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide the doctor blade comprising a raw material capable of solving the defects of metal or resin-made doctor blades and used for scratching off paper refuses, etc., from a paper-producing roll. CONSTITUTION:The doctor blade is formed of a thermoplastic fiber composite material containing 30-80wt.% of polyphenylene sulfide and 20-70wt.% of either one of glass fibers, aramide fibers and graphite fibers. The doctor blade has good adhesivity to the surface of the roll of the paper-producing machine and can perform good scratching operations without injuring the surface of the roll.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、抄紙機ロールなどのロ
ール表面に付着した紙かす等を掻き取るために使用する
ドクターブレードに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a doctor blade used for scraping off paper dust or the like adhering to the roll surface of a paper machine roll or the like.

【０００２】[0002]

【従来の技術】抄紙機ロールなどの表面に付着した紙か
す等を掻き取るためのドクター装置は、ドクターブレー
ドの刃先を適切な圧接力で、回転するロール表面に押し
つけ、ロール表面から紙かす等を連続して掻き取るもの
である。このような掻き取り動作中においては、ドクタ
ーブレードがロール表面に対して適切に当たることが必
要である。ドクターブレードの刃当たり状態が悪いと、
ロール表面を傷つけ、あるいはドクターブレードの刃先
が過剰に磨耗し、または、充分に掻き取りができない等
の弊害が発生する。2. Description of the Related Art A doctor device for scraping paper dust or the like adhering to the surface of a paper machine roll is a blade of a doctor blade, which is pressed against a rotating roll surface with an appropriate pressure contact force to remove the paper dust from the roll surface. It is to scrape continuously. During such a scraping operation, it is necessary for the doctor blade to properly hit the roll surface. If the blade contact of the doctor blade is bad,
The roll surface may be damaged, the blade edge of the doctor blade may be excessively worn, or the blade may not be sufficiently scraped off.

【０００３】[0003]

【発明が解決しようとする課題】ドクターブレードとし
ては金属製あるいは樹脂製のものが知られている。金属
製のドクターブレードを使用する場合には、樹脂製のも
のを使用する場合に比べてロール表面を傷つけ易いとい
う問題点がある。これに対して樹脂製のドクターブレー
ドを使用する場合には、ロール表面への刃当たりを均一
にできないという問題点があり、さらには、磨耗量が多
いので寿命が短いという問題点もある。A doctor blade made of metal or resin is known. When using a doctor blade made of metal, there is a problem that the roll surface is more easily damaged than when a doctor blade made of resin is used. On the other hand, when a doctor blade made of resin is used, there is a problem that the blade contact with the roll surface cannot be made uniform, and further, there is a problem that the wear amount is large and the life is short.

【０００４】本発明の課題は、このような従来の金属製
および樹脂製のドクターブレードの持つ欠点を解消する
ことのできるドクターブレードを提案することにある。An object of the present invention is to propose a doctor blade which can eliminate the drawbacks of the conventional doctor blades made of metal and resin.

【０００５】[0005]

【課題を解決するための手段】本発明においては、ドク
ターブレードを、熱可塑性樹脂と、ガラス、アラミドグ
ラファイト繊維等の繊維材料を含む熱可塑性樹脂複合材
から形成するようにしている。In the present invention, the doctor blade is formed of a thermoplastic resin and a thermoplastic resin composite material containing a fiber material such as glass or aramid graphite fiber.

【０００６】通常は、この熱可塑性樹脂複合材には、熱
可塑性樹脂を約３０乃至８０重量パーセント含まれ、繊
維材料が約２０乃至７０重量パーセント含まれる。Typically, the thermoplastic composite will contain about 30 to 80 weight percent thermoplastic and about 20 to 70 weight percent fibrous material.

【０００７】熱可塑性樹脂としては、例えば、ＰＥＥ
Ｋ、ＰＥＳ、ＰＰＳ、ＰＢＴ、ナイロン、ポリカーボネ
ート等を挙げることができる。Examples of the thermoplastic resin include PEE
Examples thereof include K, PES, PPS, PBT, nylon and polycarbonate.

【０００８】熱可塑性複合材としては、熱可塑性樹脂と
繊維材料とを、これらを少なくとも溶融点近傍まで加熱
することによって実質的に一体となる状態に結合するこ
とによって形成されたものが好ましい。The thermoplastic composite material is preferably one formed by bonding the thermoplastic resin and the fiber material to each other by heating them at least near the melting point so that they are substantially integrated.

【０００９】[0009]

【作用】このドクターブレードは、抄紙機ロールなどの
表面への密着性が良いことが確認された。また、抄紙機
ロール表面を傷つけることがなく、良好な掻き取り動作
を行い得ることが確認された。さらには、従来の樹脂製
のドクターブレードに比べて磨耗量も少ないことが確認
された。It has been confirmed that this doctor blade has good adhesion to the surface of a paper machine roll or the like. It was also confirmed that good scraping operation can be performed without damaging the surface of the paper machine roll. Furthermore, it was confirmed that the wear amount was smaller than that of the conventional doctor blade made of resin.

【００１０】また、熱可塑性樹脂と繊維材料とを、それ
らの溶融点近傍まで加熱して結合させた場合には、これ
らの一体性が高まるので、ドクターブレードとして使用
した場合には、磨耗量が少なくなる。さらに、磨耗状態
としては、熱可塑性樹脂と繊維材料との一体性が高いの
で、所謂糸状態に剥がれて磨耗していく。このために、
熱可塑性樹脂と繊維材料とを圧着した素材からなるドク
ターブレードにおける、磨耗によって磨耗粉が発生し、
この磨耗粉がロール表面に付着してそれを傷つけるとい
う弊害は、本発明のドクターブレードを用いれば解消で
きる。Further, when the thermoplastic resin and the fiber material are heated to the vicinity of their melting points to be bonded to each other, their integrity is enhanced, and therefore, when the thermoplastic resin and the fiber material are used as a doctor blade, the wear amount is reduced. Less. Further, as for the worn state, since the thermoplastic resin and the fiber material are highly integrated, they are peeled into a so-called thread state and worn. For this,
In a doctor blade made of a material in which a thermoplastic resin and a fiber material are pressure-bonded, abrasion powder is generated due to abrasion,
The adverse effect that the abrasion powder adheres to the roll surface and damages it can be eliminated by using the doctor blade of the present invention.

【００１１】[0011]

【発明の効果】以上説明したように、本発明のドクター
ブレードを用いることにより、従来の金属製および樹脂
製のドクターブレードの欠点を解消することができ、良
好な掻き取り動作を実現することができる。As described above, by using the doctor blade of the present invention, it is possible to eliminate the drawbacks of the conventional doctor blades made of metal and resin and realize a good scraping operation. it can.

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 熱可塑性樹脂と、ガラス、アラミド、グ
ラファイト繊維等の繊維材料とを含む熱可塑性樹脂複合
材から形成されていることを特徴とするドクターブレー
ド。1. A doctor blade comprising a thermoplastic resin composite material containing a thermoplastic resin and a fiber material such as glass, aramid, or graphite fiber. 【請求項２】 請求項１において、前記熱可塑性樹脂複
合材には、前記熱可塑性樹脂が約３０乃至８０重量パー
セント含まれており、前記繊維材料が約２０乃至７０重
量パーセント含まれていることを特徴とするドクターブ
レード。2. The thermoplastic resin composite according to claim 1, wherein the thermoplastic resin is contained in an amount of about 30 to 80% by weight and the fiber material is included in an amount of about 20 to 70% by weight. Doctor blade characterized by. 【請求項３】 請求項１または２において、前記熱可塑
性樹脂はポリフェニレン・スルフィドであることを特徴
とするドクターブレード。3. The doctor blade according to claim 1, wherein the thermoplastic resin is polyphenylene sulfide. 【請求項４】 請求項１乃至３のうちのいずれかの項に
おいて、前記繊維材料は、ガラス繊維、アラミド繊維お
よびグラファイト繊維のうちのいずれかであることを特
徴とするドクターブレード。4. The doctor blade according to claim 1, wherein the fiber material is any one of glass fiber, aramid fiber and graphite fiber. 【請求項５】 請求項１乃至４のうちのいずれかの項に
おいて、前記熱可塑性複合材は、熱可塑性樹脂と繊維材
料とが、少なくともこれらの溶融点近傍まで加熱するこ
とによって実質的に一体となる状態に結合されたもので
あることを特徴とするドクターブレード。5. The thermoplastic composite material according to any one of claims 1 to 4, wherein the thermoplastic resin and the fiber material are substantially integrated by heating at least near a melting point of these materials. A doctor blade characterized in that it is combined in the following state.
JP15435492A 1992-05-20 1992-05-20 Doctor blade Pending JPH05321189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15435492A JPH05321189A (en) 1992-05-20 1992-05-20 Doctor blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15435492A JPH05321189A (en) 1992-05-20 1992-05-20 Doctor blade

Publications (1)

Publication Number Publication Date
JPH05321189A true JPH05321189A (en) 1993-12-07

Family

ID=15582328

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15435492A Pending JPH05321189A (en) 1992-05-20 1992-05-20 Doctor blade

Country Status (1)

Country Link
JP (1) JPH05321189A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002092340A1 (en) * 2001-05-17 2002-11-21 Lingol Corporation Composite
EP1295988A1 (en) * 2001-09-19 2003-03-26 Ichikawa Co.,Ltd. Doctor Blade
US6643890B2 (en) 2000-12-01 2003-11-11 S. D. Warren Services Company Composite doctor blades
US6758944B2 (en) 1998-09-10 2004-07-06 Metso Paper, Inc. Doctor blade
JP2007131970A (en) * 2005-11-10 2007-05-31 Doctor Manufacturing Co Ltd Method for scraping off foreign matter on soft rubber roll, and doctor blade
US7793398B2 (en) 2002-10-09 2010-09-14 Aerowing Method of removing aircraft mastic

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6758944B2 (en) 1998-09-10 2004-07-06 Metso Paper, Inc. Doctor blade
US6643890B2 (en) 2000-12-01 2003-11-11 S. D. Warren Services Company Composite doctor blades
US6926855B1 (en) 2000-12-01 2005-08-09 S.D. Warren Company Method of making composite doctor blades
WO2002092340A1 (en) * 2001-05-17 2002-11-21 Lingol Corporation Composite
EP1295988A1 (en) * 2001-09-19 2003-03-26 Ichikawa Co.,Ltd. Doctor Blade
US7793398B2 (en) 2002-10-09 2010-09-14 Aerowing Method of removing aircraft mastic
JP2007131970A (en) * 2005-11-10 2007-05-31 Doctor Manufacturing Co Ltd Method for scraping off foreign matter on soft rubber roll, and doctor blade

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