JP2006207094A - Doctor knife - Google Patents

Doctor knife Download PDF

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JP2006207094A
JP2006207094A JP2005023989A JP2005023989A JP2006207094A JP 2006207094 A JP2006207094 A JP 2006207094A JP 2005023989 A JP2005023989 A JP 2005023989A JP 2005023989 A JP2005023989 A JP 2005023989A JP 2006207094 A JP2006207094 A JP 2006207094A
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Prior art keywords
blade
base
reinforcing material
doctor
fibrous
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Shigeru Kaneuchi
成 金内
Hideki Sakonjiyou
秀樹 左近上
Takeshi Tagoorimura
武司 田郡村
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Shikibo Ltd
Starlite Co Ltd
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Shikibo Ltd
Starlite Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a doctor knife that exerts a high-level doctor knife effect presented by deposit/contaminant/foreign matter on a roll surface in use (use especially in a long shape of about 9m) of a long-time continuous operation of a rotary roll in a steelmaking apparatus, coating apparatus, papermaking apparatus, paper processing apparatus, film/sheet production apparatus, marking apparatus, etc., in a severe environment (e.g., high-temperature environment). <P>SOLUTION: The doctor knife has a constitution that the plane of a laminated composite material of a fibrous reinforcing material and a plastic is divided into a blade part having a blade edge part at the edge in length direction and a base part, a collected face of a fibrous reinforcing material in parallel toward the blade edge part in the length direction and a crossing fibrous reinforcing material is arranged at the base part, the fibrous reinforcing material extended to the blade part from the collected face is arranged in parallel toward in the length direction of the blade edge part and the composite material has flexural strength changeable with temperature in the width direction of the base part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description


本発明は、過酷な環境下(例えば、高温環境下)で運転される製鉄装置・塗工装置・製紙装置等の回転ロ−ルに使用されて、ロ−ル表面の付着物・汚染物・異物の除去等に代表されるドクタ−ナイフ効果を高水準で発現するドクタ−ナイフに関する。

The present invention is used for rotating rolls of iron making apparatuses, coating apparatuses, paper making apparatuses and the like that are operated under harsh environments (for example, high temperature environments). The present invention relates to a doctor-knife that exhibits a doctor-knife effect typified by removal of foreign matters at a high level.


工業用装置の回転ロ−ルに用いるドクタ−ナイフは、回転ロ−ルの損傷防止・接触火花による防止等の理由から、プラスチック板が使用される傾向にあって、その長辺端部(一般的には、刃先、刃先部、作業端等と称される)の長手方向を相手ロ−ルに押圧接触させてロ−ル表面の汚染物・異物の除去等を行う。
なお、相手ロ−ルと接触する長辺端部を含む近傍領域は刃の形状に形成されていて、一般的には、刃部、エッジ部若しくは作業部等と称されている。
なお、以下において、「ドクタ−ナイフ」という場合は、特に言及しない限り、プラスチック板のドクタ−ナイフの意味で使用し、相手ロ−ルと接触する長辺端部を「刃先部」と称し、刃先部を含む近傍領域若しくは刃に形成されている領域を「刃部」と称する。

Doctor knives used in industrial equipment rotary rolls tend to use plastic plates for reasons such as prevention of damage to rotary rolls and prevention by contact sparks. In particular, the longitudinal direction of the blade edge, the blade edge portion, the working edge, etc.) is pressed against the counterpart roll to remove contaminants and foreign matters on the roll surface.
In addition, the vicinity area | region including the long side edge part which contacts an other party roll is formed in the shape of a blade, and is generally called a blade part, an edge part, or a working part.
In the following, when referred to as “doctor knife”, unless otherwise specified, it is used in the sense of a doctor knife of a plastic plate, and the long side end portion that comes into contact with the mating roll is referred to as a “blade edge portion”. A nearby region including the blade edge portion or a region formed on the blade is referred to as a “blade portion”.

ドクタ−ナイフは、水蒸気による高温環境下(例えば、約150℃の高温環境下)で長時間運転される回転ロール(例えば、製紙装置の抄紙機用ロ−ルでは、約10mの長さになる)の表面の付着物・汚染物・異物の完全に除去等を行うために、刃先部を相手ロールの長さと同様にして、相手ロールに押圧接触させる。
従って、ドクタ−ナイフが高水準のドクタ−ナイフによる効果(以下において、ドクタ−ナイフ効果と略称する)を保持するには、刃先部が回転ロ−ルに押圧接触してドクタ−ナイフ効果を生じさせる状態を保持する性能(以下において、形態保持性ということがある)と相手ロ−ルからの異物衝突(特に、、高温下での異物衝突)等により刃先部及び刃部に対する変形・たわみ等の発生を招く状況が生じても、直ちに最適な原形態に復帰する性能(以下において、原形態復帰性ということがある)を有することが必要になる。ドクタ−ナイフ効果を与える要素については、剛性・強度・弾性・耐摩耗性・耐熱性等が関与すると推論されてはいるが、従来にあっては、刃先部の特性・能力とそれらの要素との具体的関係について何らの提案もなされていない。
The doctor knife has a length of about 10 m in a rotating roll (for example, a paper machine roll of a papermaking apparatus) that is operated for a long time in a high temperature environment (for example, a high temperature environment of about 150 ° C.) due to water vapor. ), The blade edge is pressed against the mating roll in the same manner as the length of the mating roll.
Therefore, in order for the doctor knife to retain the effect of the doctor knife at a high level (hereinafter referred to as “doctor knife effect”), the blade edge portion is brought into press contact with the rotating roll to produce the doctor knife effect. Deformation / deflection of the blade edge and blade due to the performance of maintaining the condition (hereinafter sometimes referred to as form retention) and foreign object collision from the counterpart roll (especially foreign object collision at high temperature) Even if a situation that causes the occurrence of the above occurs, it is necessary to have a performance of returning to an optimal original form immediately (hereinafter sometimes referred to as original form recoverability). Although it is inferred that the elements that give the doctor-knife effect are involved in rigidity, strength, elasticity, wear resistance, heat resistance, etc., in the past, the characteristics and capabilities of the cutting edge and their factors No proposals have been made regarding the specific relationship.

本出願人は、既に、それらの性能を備え得るドクタ−ナイフとして、平織クロスと一方向ストランドとの交互積層の補強繊維状強化材とエポキシ樹脂との複合体のドクタ−ナイフを提案している(特許文献1を参照)。
しかし、その提案(特許文献1を参照)に係るドクタ−ナイフでも、工業的大規模装置(例えば、製鉄装置・製紙装置等)の過酷な環境で運転される回転ロールに使用して、高水準のドクタ−ナイフ効果を得るには不十分であった。
しかも、ドクタ−ナイフに関する従来の提案の多くは、使用環境の改
善に関するものが殆どで、例えば、ドクタ−ナイフの交換を容易にする治具の提案(特許文献2を参照)、塗工装置の塗布量を一定にドクタ−ナイフと塗布剤溜との相対的な位置関係の提案(特許文献3を参照)、ドクタ−ナイフに孔又はスリットを設けて塗布量調節用の孔またはスリットをドクタ−ナイフに設ける提案(特許文献4を参照)、水性グラビア印刷でのかすれ防止用に複数枚のドクタ−ナイフを配列する提案(特許文献5を参照)、ドクタ−ナイフとロ−ルとの組み合わせに関する提案(特許文献6参照)及びそれに類する内容のものが殆どである。
The present applicant has already proposed a doctor knife of a composite of a reinforcing fibrous reinforcing material and an epoxy resin, which are laminated with plain woven cloth and unidirectional strands, as a doctor knife capable of providing such performance. (See Patent Document 1).
However, even the doctor-knife according to the proposal (see Patent Document 1) is used for a rotating roll that is operated in a harsh environment of an industrial large-scale apparatus (for example, a steelmaking apparatus, a papermaking apparatus, etc.). The doctor-knife effect was insufficient.
Moreover, most of the conventional proposals related to the doctor knife are mostly related to the improvement of the use environment. For example, a proposal of a jig that facilitates replacement of the doctor knife (see Patent Document 2), Proposal of a relative positional relationship between the doctor knife and the coating agent reservoir with a constant coating amount (see Patent Document 3), a hole or slit is provided in the doctor knife, and a hole or slit for adjusting the coating amount is provided to the doctor. Proposal for providing a knife (see Patent Document 4), proposal for arranging multiple doctor knives to prevent blurring in aqueous gravure printing (see Patent Document 5), and a combination of a doctor knife and a roll Most of the proposals (see Patent Document 6) and similar contents.

従って、過酷な環境下(例えば、高温環境下)で使用して、刃先部及び刃部が形態保持性及び原形態復帰性等を備えて、高水準のドクタ−ナイフ効果を発現するドクタ−ナイフが提案されていなかった。 Therefore, when used in a harsh environment (for example, in a high temperature environment), the blade edge portion and the blade portion are provided with a shape retaining property, an original shape returning property, etc., and exhibit a high level doctor-knife effect. Was not proposed.

特許文献1 特開2002−173887号公報
特許文献2 特開2003−80157号公報
特許文献3 特開平11−47655号公報
特許文献4 特開平05−185010号公報
特許文献5 特開2001−287335号公報
特許文献6 特開2004−174367号公報
Patent Document 1 JP 2002-173887 JP Patent Document 2 JP 2003-80157 JP Patent Document 3 JP 11-47655 JP Patent Document 4 JP 05-185010 JP Patent Document 5 JP 2001-287335 JP Patent Document 6 JP 2004-174367 A

そこで、本発明者により実験主体に検討されて、製鉄装置・塗工装置・製紙装置等の過酷な環境下(特に、高温環境下)で運転される回転ロ−ルに使用されて高水準のドクタ−ナイフ効果が得られ、しかも、操作性及び経済性においても優れるドクタ−ナイフが本発明で見出された。
Therefore, the present inventors have examined the main subject of the experiment and used it for a rotating roll operated in a harsh environment (especially in a high temperature environment) such as a steelmaking apparatus, a coating apparatus, and a papermaking apparatus. A doctor-knife effect has been found in the present invention that provides a doctor-knife effect and is excellent in operability and economy.

(イ)本発明は、過酷な環境下(例えば、高温環境下)での回転ロ−ルの長時間の連続運転に使用して高水準のドクタ−ナイフ効果が得られるドクタ−ナイフを提供すること、を目的とする。
(ロ)本発明は、製鉄装置・塗工装置・製紙装置等の回転ロ−ルの長時間の連続運転に使用して高水準のドクタ−ナイフ効果が得られるドクタ−ナイフを提供すること、をも目的とする。
(ハ)本発明は、長尺(例えば、約9m)にしても長時間にわたって高水準のドクタ−ナイフ効果が得られるドクタ−ナイフを提供すること、をも目的とする。
(ニ)本発明は、ドクタ−ナイフの厚みを薄くして相手ロールとの接触(特に、押圧接触)状態の最適化を可能して、それによって、高水準のドクタ−ナイフ効果の発現を容易にするドクタ−ナイフを提供すること、をも目的とする。
(ホ)本発明は、製造費用を低減可能なドクタ−ナイフを提供すること、をも目的とする。
(へ)本発明は、ドクタ−ナイフの支持装置及び操作(例えば、押圧調整、接触角調整等)が容易であるドクタ−ナイフを提供すること、をも目的とする。
(A) The present invention provides a doctor knife that can be used for a long-time continuous operation of a rotating roll in a harsh environment (for example, in a high temperature environment) to obtain a high-level doctor knife effect. The purpose.
(B) The present invention provides a doctor knife that can be used for long-time continuous operation of a rotating roll such as an iron making apparatus, a coating apparatus, or a paper making apparatus to obtain a high-level doctor knife effect; Also aimed at.
(C) Another object of the present invention is to provide a doctor knife capable of obtaining a high level doctor-knife effect over a long period of time even if it is long (for example, about 9 m).
(D) The present invention makes it possible to optimize the contact state (particularly pressing contact) with the mating roll by reducing the thickness of the doctor-knife, thereby facilitating the expression of a high-level doctor-knife effect. It is also an object to provide a doctor-knife.
(E) Another object of the present invention is to provide a doctor knife capable of reducing the manufacturing cost.
(F) Another object of the present invention is to provide a doctor-knife supporting device and a doctor-knife that can be easily operated (for example, pressure adjustment, contact angle adjustment, etc.).

第一の本発明(請求項1に記載の本発明)によるドクタ−ナイフは、繊維状強化材とプラスチックとの薄板状複合体からなるもので、
(1)薄板状複合体の平面が、長手方向端縁の刃先部を含む刃部と基部に区分されて、
(2)基部には、刃先部の長手方向に向かって並列の繊維状強化材と交叉する繊維状強化材との集合面が配置されて、
(3)刃部には、集合面から刃部に延長されている繊維状強化材が、刃先部の長手方向に向かって並列し、
(4)基部の幅方向が、150℃の曲げ強度が20℃の曲げ強度の15%以上で、150℃の曲げ弾性率が20℃の曲げ弾性率の20%以上になる複合体にされていること、を特徴とする。
第二の本発明(請求項2に記載の本発明)によるドクタ−ナイフは、繊維状強化材とプラスチックとの薄板状複合体からなるもので、
(i)薄板状複合体の平面が、長手方向端縁の刃先部を含む刃部及び基部に区分されて、
(ii)基部には、刃先部の長手方向に向かって並列の繊維状強化材と交叉する繊維状強化材との三次元的配置の集合面が配置されて、
(iii)刃部には、基部の三次元的配置の集合面から刃部に延長されている繊維状強化材が刃先部の長手方向に向かって並列し、
(vi)基部の幅方向が、150℃の曲げ強度が20℃の曲げ強度の15%以上で、150℃の曲げ弾性率が20℃の曲げ弾性率の20%以上になる複合体にされていること、を特徴とする。
A doctor-knife according to the first invention (the invention according to claim 1) is composed of a thin plate composite of a fibrous reinforcement and plastic,
(1) The plane of the thin plate composite is divided into a blade part and a base part including the blade edge part of the longitudinal edge,
(2) In the base portion, an aggregate surface of the fibrous reinforcing material intersecting with the parallel fibrous reinforcing material in the longitudinal direction of the blade edge portion is arranged,
(3) In the blade portion, the fibrous reinforcement extending from the gathering surface to the blade portion is arranged in parallel in the longitudinal direction of the blade edge portion,
(4) The width direction of the base is a composite whose bending strength at 150 ° C is 15% or more of bending strength at 20 ° C and bending elastic modulus at 150 ° C is 20% or more of bending elastic modulus at 20 ° C. It is characterized by that.
A doctor knife according to the second invention (the invention according to claim 2) is composed of a thin plate-like composite of a fibrous reinforcing material and plastic,
(I) The plane of the thin plate composite is divided into a blade part and a base part including the blade edge part of the longitudinal edge,
(Ii) In the base portion, a collective surface of a three-dimensional arrangement of the fibrous reinforcing material that intersects with the parallel fibrous reinforcing material in the longitudinal direction of the cutting edge portion is arranged,
(Iii) In the blade portion, fibrous reinforcing materials extending from the gathering surface of the three-dimensional arrangement of the base portion to the blade portion are arranged in parallel in the longitudinal direction of the blade edge portion,
(Vi) The width direction of the base is a composite in which the bending strength at 150 ° C is 15% or more of the bending strength at 20 ° C and the bending elastic modulus at 150 ° C is 20% or more of the bending elastic modulus at 20 ° C. It is characterized by that.


本発明(第一及び第二の本発明)によるドクタ−ナイフによれば、下記(i)〜(viii)に代表される効果が得られる。
(i)過酷な環境下(例えば、高温下)の回転ロ−ルに長時間使用されても、高水準のドクタ−ナイフ効果(例えば、ロ−ル表面の汚染物・付着物・異物の除去である場合には、高水準の除去効率)が享受される。
(ii)製鉄装置及び製紙装置等の過酷な環境下(例えば、高温環境下)で運転される回転ロ−ルに使用して高水準のドクタ−ナイフ効果が持続的に得られる。
(iii)使用目的が相違しても、目的に対応する高水準のドクタ−ナイフ効果(例えば、塗工液塗布用の回転ロ−ルでの気泡滞留防止・塗液固化物の除去・塗布量制御・塗布膜厚の均一化等)が享受される。
(iv)長尺(例えば、約9m程度)にしても高水準のドクタ−ナイフ効果が享受される。
(v)ドクタ−ナイフの刃先部及び刃部を所望の高水準の形態保持性及び原形態復帰性に制御することが可能になる。
(vi)製造費用の低減が可能である。
(vii)軽量化・支持装置の簡略化が容易である。
(viii)ドクタ−ナイフの厚みを薄くして相手ロールとの接触(特に、押圧接触)状態の最適化が可能になる。

According to the doctor knife according to the present invention (first and second present inventions), effects represented by the following (i) to (viii) can be obtained.
(i) Even if it is used for a long time in a harsh environment (for example, at high temperature) for a long time, a high-level doctor knife effect (for example, removal of contaminants, deposits and foreign matters on the surface of the roll) In this case, a high level of removal efficiency is enjoyed.
(Ii) A high level doctor-knife effect can be obtained continuously by using it in a rotating roll operated under severe environments (for example, in a high temperature environment) such as a steelmaking apparatus and a papermaking apparatus.
(iii) Even if the purpose of use is different, a high-level doctor-knife effect corresponding to the purpose (for example, prevention of bubble retention, removal of solidified coating liquid, and coating amount in a rotating roll for coating liquid coating) Control, uniform coating thickness, etc.).
(Iv) Even if it is long (for example, about 9 m), a high level doctor-knife effect can be enjoyed.
(V) It becomes possible to control the blade edge portion and the blade portion of the doctor-knife to a desired high level of shape retention and original shape return.
(Vi) The manufacturing cost can be reduced.
(Vii) It is easy to reduce the weight and simplify the support device.
(Viii) The doctor-knife thickness can be reduced to optimize the state of contact (particularly pressing contact) with the mating roll.


第一の本発明は、前述の発明の構成からなるもので、第二の本発明は、第一の本発明を具体的レベルで把握している。ドクタ−ナイフを図1〜図7に基づいて具体的に説明する。図1〜図7は、本発明の最良の形態の好適な具体例ではあるが、本発明に包含される多くの具体例の一部の例示である。なお、図1〜図7において、同一付与を付したものは、同一若しくは同等のものを示している。

The first aspect of the present invention comprises the above-described configuration, and the second aspect of the present invention grasps the first aspect of the present invention at a specific level. The doctor knife will be specifically described with reference to FIGS. 1-7 are preferred embodiments of the best mode of the present invention, but are examples of some of the many embodiments encompassed by the present invention. In FIG. 1 to FIG. 7, those given the same assignment indicate the same or equivalent ones.

〔本発明のドクタ−ナイフの概要〕:

図1はドクタ−ナイフの一具体例を示す平面図であって、図2はその側面図である。図1において、ドクタ−ナイフ1は、繊維状強化材とプラスチックとの複合体からなる薄板状体2(すなわち、本発明の薄板状複合体)に形成されて、その長方形平面の長辺端縁の刃先部3が相手ロールと接触する。
刃部4は刃先部3を含むその近傍平面領域から形成されて、刃部4と基部5の境界6から刃先部3に向けて厚みが減少する刃の形状になっている(図2を参照)。薄板状体2の平面領域は、基部5が大部分を占めて、刃部4は、刃先部3及び刃部4への形態保持性及び原形態復帰性の付与が容易な薄板状体2の平面領域全体の0.5〜25%(好ましくは、3〜25%)を占める範囲である。
刃部4が0.5%未満であると、相手ロールの運転に対する応答性が低下してドクタ−ナイフ効果が低下する傾向があって、刃部4が25%を超えると、基部5の物性による刃先部3及び刃部4の形態保持性及び原形態復帰性の制御が困難になる傾向が生じる。
[Outline of Doctor Knife of the Present Invention]:

FIG. 1 is a plan view showing a specific example of a doctor knife, and FIG. 2 is a side view thereof. In FIG. 1, a doctor knife 1 is formed in a thin plate-like body 2 (that is, a thin plate-like composite of the present invention) made of a composite of a fibrous reinforcing material and a plastic, and has a long side edge of the rectangular plane. The blade edge part 3 comes into contact with the mating roll.
The blade portion 4 is formed from a plane region in the vicinity including the blade edge portion 3, and has a blade shape whose thickness decreases from the boundary 6 between the blade portion 4 and the base portion 5 toward the blade edge portion 3 (see FIG. 2). ). The planar area of the thin plate-like body 2 is mostly the base portion 5, and the blade portion 4 is the shape of the thin plate-like body 2 that is easy to impart shape retention and original shape return to the blade edge portion 3 and the blade portion 4. It is the range which occupies 0.5-25% (preferably 3-25%) of the whole plane area | region.
If the blade part 4 is less than 0.5%, the response to the operation of the counterpart roll tends to be reduced and the doctor-knife effect tends to be reduced. If the blade part 4 exceeds 25%, the blade edge due to the physical properties of the base part 5 There is a tendency that it becomes difficult to control the shape retainability and the original shape returnability of the portion 3 and the blade portion 4.

なお、ドクタ−ナイフ1は、長方形平面が代表的な形状ではあるが、幅方向、長手方向及び厚み方向により特定可能な形状であれば、使用目的に対応して所望の形状にすることが可能である。 The doctor-knife 1 has a rectangular plane as a typical shape, but can be formed into a desired shape according to the purpose of use as long as the shape can be specified by the width direction, the longitudinal direction, and the thickness direction. It is.

また、ドクタ−ナイフ1は、基部5の厚みを従来のプラスチック板のドクタ−ナイフよりも相当に薄くしても、ドクタ−ナイフとしての物理的及び機械的な特性が保持可能で、しかも、基部5を薄くすることによって相手ロールに対する刃先部3の接触機能の向上及び接触の最適化が可能になって、刃先部3及び刃部4の形態保持性及び原形態復帰性が向上して高水準になる。
基部5は、その厚みを、例えば、2mm以下、好ましくは、1.4mm以下、特に好ましくは、1.2mm以下に形成可能であって、厚みの下限は、例えば、約0.2mm程度まで可能である。ドクタ−ナイフ1は、本発明に適する状態に修正する等した繊維状強化材の集合体を予め用意して、それに熱硬化性樹脂を含浸するプリプレグを加熱により成形して、ドクタ−ナイフの製造を簡単・容易に行うことができる。
The doctor knife 1 can maintain the physical and mechanical characteristics as a doctor knife even if the thickness of the base 5 is considerably thinner than that of a conventional plastic plate doctor knife. By making 5 thinner, it becomes possible to improve the contact function of the blade edge part 3 with the counterpart roll and to optimize the contact, and to improve the shape retainability and the original shape returnability of the blade edge part 3 and the blade part 4 to a high level. become.
The base 5 can be formed with a thickness of, for example, 2 mm or less, preferably 1.4 mm or less, particularly preferably 1.2 mm or less, and the lower limit of the thickness can be, for example, about 0.2 mm. It is. The doctor knife 1 is prepared in advance by preparing an aggregate of fibrous reinforcing materials modified to a state suitable for the present invention, and by molding a prepreg impregnated with a thermosetting resin by heating. Can be done easily and easily.

〔基部の繊維状強化材の配置〕:

図3は、薄板状体2の平面全体の繊維状強化材の配置・配列の一具体例を示す説明図であって、図4〜図6は、基部5の長手方向断面の繊維状強化材の配置のいくつかの具体例を示す説明図である。図3〜図6に基いて、基部5における繊維状強化材の配置を説明する。
図3において、基部5には、刃先部3の長手方向に向かって繊維状強化材30、…30が幅方向(図1を参照)に密に略等間隔も並列して、基部5の長手方向(図1を参照)に並列する繊維状強化材31、…31との交叉により織物状の集合面32にして配置される。
織物状の集合面32は、基部5の複合体物性を本発明で定義する範囲に制御可能であれば、刃先部3及び刃部4に高水準の形態保持性及び原形態復帰性への付与が可能であるので、繊維状強化材30、…30、31、…31の種類・形態・交叉条件等において任意である。
ただし、基部5の集合面32が、三次元化されて三次元化集合面にされている場合には、基部5の複合体物性を本発明で定義する範囲に制御が容易で、本発明の効果の最大に享受が容易になるのが実験的に本発明で見出されている。三次元化集合面は、集合面の三次元化が可能であれば任意の手段によることが可能で、例えば、繊維状強化材の束の交叉による三次元化、直径の大きい繊維状強化材の交叉による三次元化、交叉面の複数化による三次元化若しくは繊維状強化材の立体的交叉による三次元化等からなる。
繊維状強化材の束の交叉による三次元化は、例えば、刃先部3の長手方向に向かって幅方向(図1を参照)に並列する繊維状強化材30、…30を束にして繊維状強化材31、…31と交叉する。図4は、繊維状強化材束40…40が交叉する集合面32を基部5の長手方向から視た状態を示す説明図で、図5は、繊維状強化材束40…40の構成を模式的に示す説明図である。直径の大きい繊維状強化材の交叉による三次元化は、例えば、繊維状強化材束40…40に代えて繊維状強化材の直径の拡大化による。交叉面の複数化による三次元化は、例えば、繊維状強化材30、…30、31、…31の交叉面の複数を繊維状強化材31a,…31aで連結したものである。図6は、繊維状強化材30、…30、31、…31の交叉面を繊維状強化材31a,…31aで連結する集合面32を基部5の長手方向から視た状態示す説明図である。また、立体的交叉による三次元化としては、例えば、既存の立体織物の構造の立体的交叉を利用する場合等がある。
[Disposition of base fibrous reinforcement]:

FIG. 3 is an explanatory view showing a specific example of the arrangement / arrangement of the fibrous reinforcements in the entire plane of the thin plate-like body 2, and FIGS. 4 to 6 show the fibrous reinforcements in the longitudinal section of the base portion 5. It is explanatory drawing which shows some specific examples of arrangement | positioning. The arrangement of the fibrous reinforcing material in the base 5 will be described with reference to FIGS.
In FIG. 3, the base 5 has fibrous reinforcements 30,... 30 arranged in parallel in the width direction (see FIG. 1) at substantially equal intervals in the longitudinal direction of the cutting edge 3. It is arranged as a woven aggregated surface 32 by crossing with the fibrous reinforcing materials 31 arranged in parallel in the direction (see FIG. 1).
If the composite surface 32 of the woven fabric is controllable within the range defined by the present invention, the composite properties of the base 5 are imparted to the blade edge portion 3 and the blade portion 4 with a high level of shape retention and original shape reversion. Therefore, the type, form, crossover condition, etc. of the fibrous reinforcing materials 30,.
However, when the assembly surface 32 of the base portion 5 is three-dimensionally converted into a three-dimensional assembly surface, the composite physical properties of the base portion 5 can be easily controlled within the range defined by the present invention, and It has been experimentally found in the present invention that the maximum effect can be easily enjoyed. The three-dimensional aggregate surface can be formed by any means as long as the aggregate surface can be three-dimensional, for example, three-dimensional by crossing a bundle of fibrous reinforcements, It consists of three-dimensionalization by crossing, three-dimensionalization by multiple crossing surfaces, or three-dimensionalization by three-dimensional crossover of fibrous reinforcement.
Three-dimensionalization by crossing a bundle of fibrous reinforcements is, for example, a bundle of fibrous reinforcements 30,... 30 arranged in parallel in the width direction (see FIG. 1) toward the longitudinal direction of the blade edge 3. Crosses with reinforcements 31, ... 31. FIG. 4 is an explanatory view showing a state in which the aggregate surface 32 where the fibrous reinforcing material bundles 40... 40 intersect is viewed from the longitudinal direction of the base 5. FIG. 5 schematically shows the configuration of the fibrous reinforcing material bundles 40. FIG. The three-dimensionalization by crossing the fibrous reinforcement having a large diameter is, for example, by expanding the diameter of the fibrous reinforcement instead of the fibrous reinforcement bundle 40. The three-dimensionalization by making the crossing surfaces plural is, for example, a method in which a plurality of crossing surfaces of the fibrous reinforcing materials 30, ... 30, 31, ... 31 are connected by the fibrous reinforcing materials 31a, ... 31a. FIG. 6 is an explanatory diagram showing a state in which the aggregated surface 32 connecting the crossing surfaces of the fibrous reinforcing materials 30, ..., 31, 31, ... 31 with the fibrous reinforcing materials 31a, ... 31a is viewed from the longitudinal direction of the base 5. . Further, as the three-dimensionalization by the three-dimensional crossover, for example, there is a case of using the three-dimensional crossover of the structure of the existing three-dimensional fabric.

集合面32は、繊維状強化材30、…30/繊維状強化材31、…31の比率(例えば、重量比率)を例えば、2〜15倍にして、繊維状強化材30、…30と繊維状強化材31、…31の交叉による織物状の集合面32にされている。基部5の集合面32が、例えば、図3〜図6に図示の例示と同様若しくは近似である場合には、基部5の幅方向の複合体物性を本発明の定義の範囲にすることが容易になって、刃先部3及び刃部4の形態保持性及び原形態復帰性等が著しく高水準で本発明による効果を最大に享受するのが容易になる。 The aggregate surface 32 is formed by increasing the ratio (for example, weight ratio) of the fibrous reinforcement 30, ... 30 / fibrous reinforcement 31, ... 31 to, for example, 2 to 15 times so that the fibrous reinforcement 30, 30 and fiber Are formed into a fabric-like gathering surface 32 by crossing the shape reinforcing materials 31. When the aggregate surface 32 of the base 5 is, for example, similar to or similar to the examples illustrated in FIGS. 3 to 6, the composite physical properties in the width direction of the base 5 can be easily within the definition of the present invention. Thus, it is easy to enjoy the effects of the present invention to the maximum with remarkably high levels of form retainability, original shape returnability, and the like of the blade edge part 3 and the blade part 4.

〔刃部の繊維状強化材の配置〕:
基部5の集合面32から刃部4に延長されている繊維状強化材30、…30が刃部4に直線状に延長されて密に略等間隔に並列する(図3を参照)。刃部4は、刃先部3の長手方向に向かう方向(すなわち、相手ロールの回転方向)の繊維状強化材30、…30を配列されて、基部5の制御された複合体物性の影響を直接的に受けて、高水準の形態保持性及び原形態復帰性の保持が可能にされている。
[Arrangement of fibrous reinforcing material of blade part]:
The fibrous reinforcements 30,... 30 extended from the gathering surface 32 of the base 5 to the blade 4 are linearly extended to the blade 4 and closely aligned at substantially equal intervals (see FIG. 3). The blade portion 4 is arranged with fibrous reinforcements 30 in the direction toward the longitudinal direction of the blade edge portion 3 (that is, the rotation direction of the mating roll), and directly influences the controlled composite physical properties of the base portion 5 Therefore, it is possible to maintain a high level of form retainability and original form reversion.

〈基部の曲げ強度及び曲げ弾性〉:
ドクタ−ナイフ1の薄板状体2は、基部5の幅方向が、150℃の曲げ強度が20℃の曲げ強度の15%以上で、150℃の曲げ弾性率が20℃の曲げ弾性率の20%以上になる複合体にされている。この本発明の複合体構造に関する条件は、本発明での実験による検討から見出されている(後記の表1を参照)。
本発明での実験的検討において、基部5の幅方向の曲げ強度及び曲げ弾性率が20℃〜150℃での低下率が上述の範囲である場合には、刃先部3及び刃部4の形態保持性及び原形態復帰性等が高水準に保持されて、本発明による効果が享受されることが見出されている。
<Bend strength and flexural elasticity of the base>:
The thin plate-like body 2 of the doctor-knife 1 has a base 5 having a width direction of 150 ° C. with a bending strength of 150 ° C. being 15% or more of a bending strength of 20 ° C., a bending elastic modulus at 150 ° C. It is made into the composite which becomes more than%. The conditions relating to the composite structure of the present invention have been found from examinations by experiments in the present invention (see Table 1 below).
In the experimental examination in the present invention, when the bending strength and the bending elastic modulus in the width direction of the base portion 5 are within the above-mentioned range, the shape of the blade edge portion 3 and the blade portion 4 It has been found that the retainability, the original shape reversion property, etc. are maintained at a high level, and the effects of the present invention are enjoyed.

なお、基部5の幅方向において、150℃の曲げ強度が20℃の曲げ強度の25%以上で、150℃の曲げ弾性率が20℃の曲げ弾性率の50%以上であれば、ドクタ−ナイフ1について本発明の効果の享受が容易になる。
また、基部5の幅方向において、150℃の曲げ強度が20℃の曲げ強度の約80%で、150℃の曲げ弾性率が20℃の曲げ弾性率の90%であることが可能であるが、経済性の確保が著しく困難になる。
また、基部5が、幅方向の曲げ強度(20℃)が長手方向の曲げ強度(20℃)の3倍以上(好ましくは、5倍以上)である場合には、ドクタ−ナイフ1について本発明の効果の享受が容易になる。ただし、その上限は工業的経済性・複合体製造装置等からの制約から、例えば、15倍程度である。
If the bending strength at 150 ° C is 25% or more of the bending strength at 20 ° C and the bending elastic modulus at 150 ° C is 50% or more of the bending elastic modulus at 20 ° C in the width direction of the base 5, the doctor knife 1 makes it easy to enjoy the effects of the present invention.
Also, in the width direction of the base 5, the bending strength at 150 ° C. can be about 80% of the bending strength at 20 ° C., and the bending elastic modulus at 150 ° C. can be 90% of the bending elastic modulus at 20 ° C. Securing economic efficiency becomes extremely difficult.
In the case where the base portion 5 has a bending strength (20 ° C.) in the width direction of 3 times or more (preferably 5 times or more) of the bending strength (20 ° C.) in the longitudinal direction, the doctor knife 1 according to the present invention. The enjoyment of the effect becomes easy. However, the upper limit is, for example, about 15 times due to restrictions from industrial economy and composite production equipment.

表1は、本発明で得られた実験結果の一例であって、本発明の試験用ドクタ−ナイフとして、基部5の幅方向にカーボン繊維の束を並列し、基部5の長手方向にガラス繊維を並列し、カーボン繊維とガラス繊維との重量比率を90(カーボン繊維)対10(ガラス繊維)にした平織状の織物状集合面を基部5に配置し、織物状集合面のカーボン繊維を刃部4に延長して図3に示す配置の繊維状強化材を作成し、それをエポキシ樹脂に含浸・一体化したプリプレグを加熱・成形した。 Table 1 is an example of the experimental results obtained in the present invention. As a test doctor-knife of the present invention, a bundle of carbon fibers is juxtaposed in the width direction of the base 5, and the glass fibers are aligned in the longitudinal direction of the base 5. Are placed in the base 5 with a plain weave woven aggregate surface with a weight ratio of carbon fiber to glass fiber of 90 (carbon fiber) to 10 (glass fiber), and the carbon fiber of the woven aggregate surface is bladed A fibrous reinforcing material having an arrangement shown in FIG. 3 was prepared by extending to the portion 4, and a prepreg impregnated and integrated with an epoxy resin was heated and molded.

比較用ドクタ−ナイフとして、カーボン繊維/ガラス繊維の交織織物とエポキシ樹脂の複合体からなるドクタ−ナイフを製作して対比した。なお、表1の曲げ強度及び曲げ弾性率は、JISK6911により測定している。また、本発明の曲げ強度及び曲げ弾性率の評価もJISK6911による。 As a comparative doctor knife, a doctor knife composed of a composite of carbon fiber / glass fiber woven fabric and epoxy resin was manufactured and compared. The bending strength and flexural modulus in Table 1 are measured according to JISK6911. The evaluation of the bending strength and bending elastic modulus of the present invention is also in accordance with JISK6911.

図6は、基部5からの矩形状試験片(JISK6911に定める試験片)の切り出しを示す説明図であって、矩形状試験片60は、幅方向の曲げ強度及び曲げ弾性率を測定するための切り出し配置を示している。
表1の実験によれば、プラスチックとして同じエポキシ樹脂を使用する複合体であって、比較用ドクタ−ナイフは、カーボン繊維/ガラス繊維の交織織物(すなわち、強度が著しく大きい織物)の積層を使用したが、150℃の高温での基部の幅方向の曲げ強度及び曲げ弾性率の低下が著しく、刃部4の幅方向の曲げ強度及び曲げ弾性率も著しく低下し、刃先部3の形態保持性及び原形態復帰性も低下した。
これに対して、本発明の試験用ドクタ−ナイフは、基部5の幅方向の物性が比較用ドクタ−ナイフと同様になって、しかも、150℃の高温での基部の幅方向の曲げ強度及び曲げ弾性率の低下を大幅に抑制可能になって(表1を参照)、高温下で運転する回転ロールに使用して高水準のドクタ−ナイフ効果(特に、ロ−ル表面の付着物・汚染物・異物の完璧に近い除去)が発現して持続することが大型装置を使用する実験で見出された。
FIG. 6 is an explanatory view showing the cutting of a rectangular test piece (test piece defined in JIS K6911) from the base 5, and the rectangular test piece 60 is used for measuring the bending strength and bending elastic modulus in the width direction. The cutout arrangement is shown.
According to the experiments in Table 1, a composite using the same epoxy resin as the plastic, the comparative doctor-knife uses a laminate of carbon fiber / glass fiber interwoven fabrics (ie, fabrics with significant strength) However, the bending strength and bending elastic modulus in the width direction of the base portion at a high temperature of 150 ° C. are remarkably reduced, and the bending strength and bending elastic modulus in the width direction of the blade portion 4 are also remarkably reduced. And the original form reversion was also reduced.
In contrast, the test doctor-knife of the present invention has the same physical properties in the width direction of the base 5 as the comparative doctor-knife, and the bending strength in the width direction of the base at a high temperature of 150 ° C. The decrease in flexural modulus can be greatly suppressed (see Table 1), and it is used for rotating rolls that operate at high temperatures. A high level of doctor-knife effect (especially deposits and contamination on the roll surface) It was found in an experiment using a large-sized apparatus that the near-perfect removal of objects and foreign substances) was developed and sustained.

〔繊維状強化材〕:
繊維状強化材は、プラスチック複合体用の線状の強化材であって、プラスチックとの複合化によって、基部5に本発明に定義する曲げ強度及び曲げ弾性を与えるものである。繊維状強化材は、例えば、無機質または有機質の、繊維、糸若しくはそれらの組合せ等であって、任意の断面形状であり得る。なお、「フィラメント」の用語が使用されているが、「繊維」と同義語であるので、本明細書では、「繊維」の用語を「フィラメント」を含む語義で使用している。無機質の繊維状強化材は、例えば、カーボン質、グラファイト質、ガラス質、金属質(アルミ合金等)、シリカ質、アルミナ質等の繊維状強化材である。有機質の繊維状強化材は、例えば、ナイロン、ビニロン、ポリエステル等の繊維状強化材である。
[Fibrous reinforcement]:
The fibrous reinforcing material is a linear reinforcing material for a plastic composite, and imparts bending strength and bending elasticity as defined in the present invention to the base 5 by being combined with plastic. The fibrous reinforcing material is, for example, an inorganic or organic fiber, yarn, or a combination thereof, and may have any cross-sectional shape. In addition, although the term “filament” is used, it is synonymous with “fiber”. Therefore, in this specification, the term “fiber” is used in the meaning including “filament”. The inorganic fibrous reinforcement is, for example, a fibrous reinforcement such as carbon, graphite, glass, metal (aluminum alloy, etc.), siliceous, and alumina. The organic fibrous reinforcement is, for example, a fibrous reinforcement such as nylon, vinylon, or polyester.

〔ドクタ−ナイフ複合体用のプラスチック〕:

プラスチックは、繊維状強化材との複合化によって、基部5に本発明に定義する曲げ強度及び曲げ弾性を与えるものが使用可能で、例えば、フェノ−ル樹脂、エポキシ樹脂、ポリイミド樹脂、ポリアミドイミド樹脂、ポリアミド樹脂若しくはポリフェニレンサルファイド樹脂等である。エポキシ樹脂及びフェノ−ル樹脂の使用によって、本発明の効果が大きくなる。ドクタ−ナイフの成形に際しての複合化は、公知の技術であってもよく、本発明のために新たに創作した技術であってもよい。

ドクタ−ナイフの成形に際しては、必要に応じて、例えば、安定剤(例えば、酸化防止剤、光安定剤等)、着色剤、滑剤、滞電防止剤、難燃剤、充填剤、抗菌剤及び防かび剤等の一種若しくは複数種の必要量を混入することが可能である。
[Plastic for doctor-knife composite]:

Plastics that can be used to impart bending strength and flexural elasticity as defined in the present invention to the base 5 by being combined with a fibrous reinforcing material can be used. For example, phenol resin, epoxy resin, polyimide resin, polyamideimide resin A polyamide resin or a polyphenylene sulfide resin. The effect of the present invention is enhanced by the use of epoxy resin and phenol resin. The compounding in forming the doctor-knife may be a known technique or a technique newly created for the present invention.

When forming a doctor knife, for example, stabilizers (for example, antioxidants, light stabilizers, etc.), coloring agents, lubricants, antistatic agents, flame retardants, fillers, antibacterial agents, and antibacterial agents are used. It is possible to mix one or a plurality of necessary amounts of fungi and the like.

〈ドクタ−ナイフの使用の態様〉:

本発明のドクタ−ナイフは、軽量で厚みが薄く、かつ、物理的及び機械的な特性が大きいので、長尺にすることが可能で、支持装置の構造を簡単化することができる。支持装置及びその支持部は、公知の固着手段によることが可能である。
本発明のドクタ−ナイフは、塗工装置の回転ロールに使用すれば、塗工液の精密な流出量の精密な制御が可能である。

なお、本発明のドクタ−ナイフを装備する回転ロ−ルについて、特に制約がなく、各種産業の各種装置の回転ロ−ルへの装備が可能であって、例えば、印刷装置、各種塗工装置、製紙装置、紙加工装置、フイルム・シ−ト製造装置、フイルム・シ−ト加工装置若しくはマ−キング装置等がある。
<Mode of use of doctor knife>:

The doctor knife of the present invention is light and thin, and has large physical and mechanical characteristics. Therefore, the doctor knife can be made long and the structure of the support device can be simplified. The supporting device and its supporting part can be formed by a known fixing means.
If the doctor knife of this invention is used for the rotating roll of a coating apparatus, the precise control of the precise outflow amount of a coating liquid is possible.

The rotary roll equipped with the doctor knife of the present invention is not particularly limited, and can be mounted on the rotary roll of various apparatuses in various industries. For example, a printing apparatus, various coating apparatuses , Paper manufacturing apparatus, paper processing apparatus, film sheet manufacturing apparatus, film sheet processing apparatus or marking apparatus.

〈本発明の他の具体例〉:

なお、本発明には、実施のための最良の手段として、他の多様な具体例が含まれる。以下にその一部の具体例を例示する。
(1)薄板状体2は、相手ロ−ルの使用目的若しくは必要に応じて、基部5その他に溝若しくは孔等を設けることが可能である。
(2)薄板状体2は、繊維状強化材を立体織物等からなる繊維状強化材を複合強化材として配置することが可能である。
(3)基部の幅方向には、繊維状強化材束に代えて太い繊維状強化材を並列して長手方向の繊維状強化材と交叉する集合面にしてもよい。
(4)ドクタ−ナイフは、支持装置用の固着手段を設けてもよい。
<Other embodiments of the present invention>

The present invention includes various other specific examples as the best means for implementation. Some specific examples are illustrated below.
(1) The thin plate-like body 2 can be provided with a groove or a hole or the like in the base 5 or the like according to the purpose of use of the counterpart roll or as required.
(2) In the thin plate-like body 2, it is possible to arrange a fibrous reinforcing material made of a three-dimensional fabric or the like as a composite reinforcing material.
(3) In the width direction of the base portion, a thick fibrous reinforcing material may be arranged in parallel instead of the fibrous reinforcing material bundle, and may be an aggregate surface intersecting with the longitudinal fibrous reinforcing material.
(4) The doctor knife may be provided with a fixing means for the support device.


本発明のドクタ−ナイフは、各種産業装置の過酷な環境下(特に、高温環境下)の回転ロ−ルに使用して、使用目的に対応する高水準のドクタ−ナイフ効果が得られる。

The doctor knife of the present invention can be used for rotating rolls under harsh environments (particularly in high temperature environments) of various industrial devices to obtain a high level doctor knife effect corresponding to the purpose of use.

ドクタ−ナイフの一具体例の平面図である。It is a top view of one specific example of a doctor knife. ドクタ−ナイフの一具体例の側面図である。It is a side view of one specific example of a doctor knife. 薄板状体の平面全体の繊維状強化材の配置・配列の一具体例を示す説明図である。It is explanatory drawing which shows a specific example of arrangement | positioning / arrangement | sequence of the fibrous reinforcement material of the whole plane of a thin-plate body. 繊維状強化材束が交叉する集合面を基部の長手方向から視た状態示す説明図である。It is explanatory drawing which shows the state which looked at the aggregate surface where a fibrous reinforcement bundle crosses from the longitudinal direction of the base. 繊維状強化材束の構成を模式的に示す説明図である。It is explanatory drawing which shows typically the structure of a fibrous reinforcement bundle. 繊維状強化材の交叉面を繊維状強化材で連結する集合面を基部の長手方向から視た状態示す説明図である。It is explanatory drawing which shows the state which looked at the aggregate surface which connects the crossing surface of a fibrous reinforcement with a fibrous reinforcement from the longitudinal direction of the base. 矩形状試験片を基部から切り出す説明図である。It is explanatory drawing which cuts out a rectangular-shaped test piece from a base.

符号の説明Explanation of symbols


1 ドクタ−ナイフ

2 薄板

3 刃先部

4 刃部

5 基部

30 繊維状強化材

31 繊維状強化材

32 集合面
40 繊維状強化材束
41 連結用の繊維状強化材
70 矩形状試験片

1 Doctor knife

2 Thin plate

3 Cutting edge

4 blade

5 base

30 Fibrous reinforcement

31 Fibrous reinforcement

32 Meeting surface
40 Fibrous reinforcement bundle
41 Fibrous reinforcement for connection
70 Rectangular specimen

Claims (4)

繊維状強化材とプラスチックとの薄板状複合体からなるドクタ−ナイフであって、
(1)薄板状複合体の平面が、長手方向端縁の刃先部を含む刃部と基部に区分されて、
(2)基部には、刃先部の長手方向に向かって並列の繊維状強化材と交叉する繊維状強化材との集合面が配置されて、
(3)刃部には、集合面から刃部に延長されている繊維状強化材が、刃先部の長手方向に向かって並列し、
(4)基部の幅方向が、150℃の曲げ強度が20℃の曲げ強度の15%以上で、150℃の曲げ弾性率が20℃の曲げ弾性率の20%以上になる複合体にされていること、を特徴とするドクタ−ナイフ。
A doctor-knife comprising a thin plate composite of fibrous reinforcement and plastic,
(1) The plane of the thin plate composite is divided into a blade part and a base part including the blade edge part of the longitudinal edge,
(2) In the base portion, an aggregate surface of the fibrous reinforcing material intersecting with the parallel fibrous reinforcing material in the longitudinal direction of the blade edge portion is arranged,
(3) In the blade portion, the fibrous reinforcement extending from the gathering surface to the blade portion is arranged in parallel in the longitudinal direction of the blade edge portion,
(4) The width direction of the base is a composite whose bending strength at 150 ° C is 15% or more of bending strength at 20 ° C and bending elastic modulus at 150 ° C is 20% or more of bending elastic modulus at 20 ° C. A doctor knife, characterized in that
繊維状強化材とプラスチックとの薄板状複合体からなるドクタ−ナイフであって、
(i)薄板状複合体の平面が、長手方向端縁の刃先部を含む刃部及び基部に区分されて、
(ii)基部には、刃先部の長手方向に向かって並列の繊維状強化材が他の繊維状強化材との交叉による三次元化集合面が配置されて、
(iii)刃部には、基部の三次元化集合面から刃部に延長されている繊維状強化材が刃先部の長手方向に向かって並列し、
(vi)基部の幅方向が、150℃の曲げ強度が20℃の曲げ強度の15%以上で、150℃の曲げ弾性率が20℃の曲げ弾性率の20%以上になる複合体にされていること、を特徴とするドクタ−ナイフ。
A doctor-knife comprising a thin plate composite of fibrous reinforcement and plastic,
(I) The plane of the thin plate composite is divided into a blade part and a base part including the blade edge part of the longitudinal edge,
(Ii) In the base, a three-dimensional assembly surface is arranged by crossing the fibrous reinforcing material in parallel with the other fibrous reinforcing material in the longitudinal direction of the cutting edge portion,
(Iii) In the blade portion, fibrous reinforcing materials extending from the three-dimensional gathering surface of the base portion to the blade portion are arranged in parallel in the longitudinal direction of the blade edge portion,
(Vi) The width direction of the base is a composite in which the bending strength at 150 ° C is 15% or more of the bending strength at 20 ° C and the bending elastic modulus at 150 ° C is 20% or more of the bending elastic modulus at 20 ° C. A doctor knife, characterized in that
下記(1)〜(9)の特徴の一つ若しく複数を備えること、を特徴とする請求項1若しくは請求項2に記載のドクタ−ナイフ。
(1)前記繊維状強化材が、無機質または有機質の、繊維、糸若しくはそれらの組み合わせからなる。
(2)前記基部は、20℃の幅方向の曲げ強度が、20℃の長手方向の曲げ強度の3倍以上からなる。
(3)前記集合面が、平織若しくは平織の変化組織からなる。
(4)前記基部の平均厚みが、2mm以下からなる。
(5)前記刃部は、刃先部の長手方向端縁から薄板状複合体の平面の0.5〜25%を占める。
(6)前記刃先部の長手方向に向かって刃部に並列する繊維状強化材が、基部から刃部に直線状に延長されている。
(7)前記三次元化集合面が、繊維状強化材の束の交叉による三次元化、直径の大きい繊維状強化材の交叉による三次元化、交叉面の複数化による三次元化若しくは繊維状強化材の立体的交叉による三次元化からなる。
(8)前記プラスチックが、フエノール樹脂、エポキシ樹脂、ポリイミド樹脂、ポリアミドイミド樹脂、ポリアミド樹脂若しくはポリフェニレンサルファイド樹脂からなる。
(9)前記ドクタ−ナイフが、製鉄装置、印刷装置、塗工装置、製紙装置、紙加工装置、フイルム・シ−ト製造装置若しくはマ−キング装置のロールに使用されるドクタ−ナイフからなる。
3. The doctor knife according to claim 1 or 2, comprising one or more of the following features (1) to (9).
(1) The fibrous reinforcing material is made of inorganic or organic fibers, yarns, or a combination thereof.
(2) The base portion has a bending strength in the width direction at 20 ° C. that is at least three times the bending strength in the longitudinal direction at 20 ° C.
(3) The aggregate surface is made of plain weave or plain weave change structure.
(4) The base has an average thickness of 2 mm or less.
(5) The blade portion occupies 0.5 to 25% of the plane of the thin plate composite from the longitudinal edge of the blade edge portion.
(6) A fibrous reinforcing material that is parallel to the blade portion in the longitudinal direction of the blade edge portion is linearly extended from the base portion to the blade portion.
(7) The three-dimensional aggregate surface is three-dimensional by crossing a bundle of fibrous reinforcements, three-dimensional by crossing large-diameter fibrous reinforcements, three-dimensional or fibrous by multiple crossing surfaces It consists of three-dimensionalization by three-dimensional crossover of reinforcing materials.
(8) The plastic is made of phenol resin, epoxy resin, polyimide resin, polyamideimide resin, polyamide resin, or polyphenylene sulfide resin.
(9) The doctor knife is a doctor knife used for a roll of an iron making device, a printing device, a coating device, a paper making device, a paper processing device, a film sheet manufacturing device, or a marking device.
下記(i)〜(v)の特徴の一つ若しく複数を備えること、を特徴とする請求項1〜3のいずれかに記載のドクタ−ナイフ。
(i)前記基部が、平均厚みが平均1.4mm以下からなる。
(ii)前記無機質の繊維状強化材は、カーボン質、グラファイト質、ガラス質、金属質、シリカ質若しくはアルミナ質からなる。
(iii)前記有機質の繊維状強化材は、ナイロン、ビニロン若しくはポリエステルからなる。
(iv)前記基部は、幅方向の曲げ強度が、長手方向の曲げ強度の3倍以上である複合体からなる。
(v)前記刃部は、ドクタ−ナイフの薄板平面の0.5〜25%を占める。
The doctor knife according to any one of claims 1 to 3, comprising one or more of the following features (i) to (v):
(I) The base has an average thickness of 1.4 mm or less.
(Ii) The inorganic fibrous reinforcing material is made of carbon, graphite, glass, metal, silica or alumina.
(Iii) The organic fibrous reinforcing material is made of nylon, vinylon or polyester.
(Iv) The base portion is made of a composite having a bending strength in the width direction that is at least three times the bending strength in the longitudinal direction.
(V) The said blade part occupies 0.5 to 25% of the thin plate plane of a doctor knife.
JP2005023989A 2005-01-31 2005-01-31 Doctor knife Pending JP2006207094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

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Publication Number Publication Date
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Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8237162B2 (en) 2008-11-05 2012-08-07 Sony Corporation Thin film transistor substrate and display device
JP2015531030A (en) * 2012-07-23 2015-10-29 カダント インコーポレイテッド Doctor blade with combined carbon / glass yarn
CN108138444A (en) * 2015-08-13 2018-06-08 卡丹特公司 The flat elements for including three-dimensional Composite reinforcing structure body as doctor blade or top plate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8237162B2 (en) 2008-11-05 2012-08-07 Sony Corporation Thin film transistor substrate and display device
US8426862B2 (en) 2008-11-05 2013-04-23 Sony Corporation Thin film transistor substrate and display device
JP2015531030A (en) * 2012-07-23 2015-10-29 カダント インコーポレイテッド Doctor blade with combined carbon / glass yarn
CN108138444A (en) * 2015-08-13 2018-06-08 卡丹特公司 The flat elements for including three-dimensional Composite reinforcing structure body as doctor blade or top plate
JP2018523025A (en) * 2015-08-13 2018-08-16 カダント インコーポレイテッド A flat element for use as a doctor blade or top plate containing a three-dimensional composite reinforced structure

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