JPH0378146B2 - - Google Patents
Info
- Publication number
- JPH0378146B2 JPH0378146B2 JP59215320A JP21532084A JPH0378146B2 JP H0378146 B2 JPH0378146 B2 JP H0378146B2 JP 59215320 A JP59215320 A JP 59215320A JP 21532084 A JP21532084 A JP 21532084A JP H0378146 B2 JPH0378146 B2 JP H0378146B2
- Authority
- JP
- Japan
- Prior art keywords
- paper web
- coating
- air knife
- applicator
- coating material
- 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.)
- Expired - Lifetime
Links
- 238000000576 coating method Methods 0.000 claims description 74
- 239000011248 coating agent Substances 0.000 claims description 71
- 239000000123 paper Substances 0.000 claims description 53
- 239000000463 material Substances 0.000 claims description 38
- 239000000126 substance Substances 0.000 claims description 10
- 239000011111 cardboard Substances 0.000 claims description 2
- 239000011087 paperboard Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000007754 air knife coating Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
- D21H25/16—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with a blast of vapour or gas, e.g. air knife
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/06—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with a blast of gas or vapour
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
- D21H5/006—Controlling or regulating
- D21H5/0062—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper
- D21H5/007—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper with a blast of gas or vapour, e.g. air knife
Landscapes
- Coating Apparatus (AREA)
- Paper (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、特許請求の範囲第１項の前文に定義
された種類のエア・ナイフ塗工機に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air knife coating machine of the type defined in the preamble of claim 1.
従来の技術
周知のエア・ナイフ塗工機においては、塗工物
質が、エア・ナイフ装置からなり離れた位置で、
移動中の紙匹上に先ず塗布される。このため、紙
匹上の塗工物質には、それがエア・ナイフによつ
て処理される前に変化を受けるだけの時間があ
る。従つて、塗工物質の液体成分の一部分は通
常、紙匹内に浸透し、その別の部分は蒸発する。
これが塗工物質の粘度と乾燥固形分とを増大さ
せ、それによつてエア・ナイフの有効性が低下す
る。このため、エア・ナイフ塗工機は従前、約
300ないし400ｍ／minの比較的低い紙匹速度で用
いられ、塗工物質の乾燥固形分は通常40％未満と
いう比較的少ないものであつた。さらにまた、紙
匹上に塗布される大量の余剰塗工物質に結び付く
塗工物質の高い含水率のため、エア・ナイフの使
用により、しばしば発泡の問題がひき起こされ
た。BACKGROUND OF THE INVENTION In known air knife coating machines, the coating material is applied at a distance from the air knife device.
It is first applied onto a moving paper web. Thus, the coating material on the paper web has time to undergo changes before it is processed by the air knife. Thus, a portion of the liquid component of the coating material typically penetrates into the paper web, while another portion evaporates.
This increases the viscosity and dry solids content of the coating material, thereby reducing the effectiveness of the air knife. For this reason, air knife coating machines used to have approx.
Relatively low web speeds of 300 to 400 m/min were used and the dry solids content of the coating material was relatively low, typically less than 40%. Furthermore, the use of air knives often caused foaming problems due to the high moisture content of the coating material which resulted in large amounts of excess coating material being applied onto the paper web.
発明が解決しようとする問題点
本発明の目的は、高い紙匹速度においても、ま
た塗工物質の乾燥固形分が高い場合にも、効果的
に作動するエア・ナイフ塗工機を作り出すことに
ある。本発明の独特の特徴を特許請求の範囲第１
項に述べてある。このようにして作られた塗工機
によつて本発明の目的が達成される。PROBLEM SOLVED BY THE INVENTION It is an object of the present invention to create an air knife coater that operates effectively even at high web speeds and when the dry solids content of the coating material is high. be. The unique features of the invention are set forth in the first claim.
It is mentioned in section. The object of the present invention is achieved by the coating machine thus constructed.
問題点を解決するための手段
本発明の好適な実施例においては、エア・ナイ
フと塗工物質塗布帯域の後部との間の距離にほぼ
等しい紙匹の縦方向での距離にわたつて塗工物質
が塗布される。これが通常、最良の塗工結果を与
える。塗工物質塗布ダクトの断面が紙匹に向かう
方向に連続的に縮小するということもまた好都合
である。これにより、塗工物質の流れが塗布器内
で加速し、それによつて、不純物がたまる可能性
のある低い流速を有する場所が除去される。SUMMARY OF THE INVENTION In a preferred embodiment of the invention, the coating is applied over a distance in the longitudinal direction of the paper web approximately equal to the distance between the air knife and the rear of the coating material application zone. A substance is applied. This usually gives the best coating results. It is also advantageous that the cross-section of the coating material application duct continuously reduces in the direction towards the paper web. This accelerates the flow of the coating material within the applicator, thereby eliminating locations with low flow rates where impurities can accumulate.
この塗布器は通常20ないし50％の塗工物質の余
剰量を紙匹上に塗布し、この余剰量がエア・ナイ
フ装置によつて取り除かれる。所望の塗布量が10
ｇ／cm2の場合、この塗布器は約12ないし15ｇ／cm2
を紙匹上に塗布する。しかし、塗工物質の実質的
な余剰が与えられないように塗工物質の供給が調
整されても、このエア・ナイフは、余剰の塗工物
質を吹き飛ばさない場合にも、尚且つ塗工の品質
に有利な影響を及ぼす。このような次第なので、
塗布器の機能が、塗布される塗工物質の余剰量が
零に近付き得るように、調整可能であることが重
要である。 This applicator typically applies a 20 to 50% surplus of coating material onto the paper web, and this surplus is removed by an air knife device. Desired application amount is 10
g/cm 2 , this applicator approx. 12 to 15 g/cm 2
Apply on the paper. However, even if the supply of coating material is adjusted so that there is no substantial surplus of coating material, this air knife will not blow away the excess coating material and Affects quality favorably. Because of this,
It is important that the function of the applicator is adjustable so that the excess amount of coating substance applied can approach zero.
移動する紙匹は塗工物質塗布器を通り、それに
より塗工物質が紙匹上に塗り広げられる。そこか
ら紙匹が塗布帯域に入る塗布器の側を塗布器の前
側と呼び、そこから紙匹が塗布器を離れる側を後
側と呼ぶ。本発明の好適な実施例には、塗布器の
後側の、塗布器と紙匹との間に調整可能なスロツ
トまたはギヤツプがある。このスロツトの高さを
変えることにより、紙匹上に塗り広げられる塗工
物質の量が調整される。本発明による塗工機にお
いては、別の種類の塗布器、例えばたわみ性の塗
工ブレードまたは塗工バーを塗布帯域の後縁で紙
匹に押し付けるようにした塗布器を用いることも
できる。また種々の押出し塗布器を用いてもよ
い。塗布器の前縁に塗工物質のオーバフロー用の
スロツトまたはギヤツプを配設することが有利で
あることが立証されている。これによつて、塗布
器内にたまつた不純物がオーバーフロー・スロツ
トを経て流出できるという利点が得られる。紙匹
塗工工程にこの種のオーバフロー塗布器を用いる
ことはそれ自体周知されている。 The moving paper web passes through a coating material applicator, which spreads the coating material onto the paper web. The side of the applicator from which the paper web enters the application zone is called the front side of the applicator, and the side from which the paper web leaves the applicator is called the rear side. A preferred embodiment of the invention includes an adjustable slot or gap on the rear side of the applicator and between the applicator and the paper web. By varying the height of this slot, the amount of coating material spread onto the paper web is adjusted. In the coating machine according to the invention, it is also possible to use other types of applicators, for example applicators in which a flexible coating blade or coating bar is pressed against the paper web at the trailing edge of the coating zone. Also, various extrusion applicators may be used. It has proven advantageous to arrange a slot or gap for the overflow of the coating material at the leading edge of the applicator. This has the advantage that impurities that have accumulated in the applicator can flow out via the overflow slot. The use of overflow applicators of this type in paper web coating processes is known per se.
本発明による塗工機は、紙匹が、塗工されずに
残される側で、支持ドラムにより、塗工物質塗布
器とエア・ナイフとの位置で支えられれば、最良
の状態で作動する。紙匹の両面塗工のため、支え
を全く使用せず、その代り本発明による装置を紙
匹の両側に用いることも可能である。それには、
なるべくなら、塗工物質塗布器とエア・ナイフと
を紙匹の反対側に対称に配設することが望まし
い。支持ドラムを用いる場合、その最も有利な直
径は通常、最小400mm、最大1300mmである。最も
有利な紙匹の速度は、400ｍ／minより高く、な
るべくなら、約600ｍ／minであることが望まし
い。但し、本発明によれば、かなり小さい紙匹速
度においても有利な結果が得られる。 The coating machine according to the invention works best if the paper web, on the side left uncoated, is supported by a support drum at the location of the coating material applicator and air knife. Because of the double-sided coating of the paper web, it is also possible not to use any supports at all, but instead to use the device according to the invention on both sides of the paper web. For that,
Preferably, the coating material applicator and air knife are arranged symmetrically on opposite sides of the paper web. If a support drum is used, its most advantageous diameter is typically a minimum of 400 mm and a maximum of 1300 mm. The most advantageous paper web speed is higher than 400 m/min, preferably around 600 m/min. However, according to the invention, advantageous results are obtained even at fairly low web speeds.
実施例および作用
ここで添付図面につき例示として本発明と説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS AND OPERATIONS The present invention will now be described by way of example in the accompanying drawings.
第１図において、数字１は移動する紙または厚
紙の紙匹を示す。紙匹１は回転する支持ドラム２
によつて支えられるが、その直径は例えば0.5ｍ
でよい。塗工物質は、同時に塗布器３の傾倒軸と
しても作用する導管４を経て塗工物質がポンプで
送り込まれる塗布器３によつて紙匹上に塗り広げ
られる。塗布器の傾倒運動は、１組または数組の
パワ・シリンダ５によつて達成される。調整可能
な支え６によつて塗布器の正確な作動位置が定め
られる。パワ・シリンダ５は支え６に向かつて塗
布器３を押し付ける。この塗布器は、連続的に加
速する塗工物質の流れを得るため、紙匹１に向か
う方向に連続的にせばまる供給ダクトを有する。 In FIG. 1, the number 1 indicates a moving web of paper or cardboard. Paper web 1 is a rotating support drum 2
The diameter is, for example, 0.5m.
That's fine. The coating substance is spread onto the paper web by means of an applicator 3 into which the coating substance is pumped via a conduit 4 which also serves as a tilting axis for the applicator 3. The tilting movement of the applicator is achieved by one or several sets of power cylinders 5. An adjustable support 6 determines the exact working position of the applicator. The power cylinder 5 presses the applicator 3 against the support 6. This applicator has a feed duct that narrows continuously in the direction towards the paper web 1 in order to obtain a continuously accelerating flow of coating substance.
塗布器の後縁には、紙匹１と接触はしないがそ
れ自体と紙匹１との間に狭いギヤツプ８を残すブ
レード７がある。塗布器から供給される塗工物質
９は紙匹に吸収され、エア・ナイフ装置１０のノ
ズルの位置まで紙匹と共に移動し、そこで塗工物
質の余剰分は紙匹から吹き飛ばされる。塗布器３
の後縁とエア・ナイフ装置１０のノズルとの間の
距離ａは、紙匹１が通常この距離を５ｍsec未満、
なるべくなら３ｍsec未満、の間に移動する程度
に狭くなつている。さらに、塗布器の前縁と後縁
との間の距離は、全塗工工程の時間、即ち紙匹上
の点が塗布器の前縁１２からエア・ナイフ１０ま
で移動するに要するが15mecより少ない、なるべ
くなら９ｍsecより少ない程度に狭くなつている。
高い紙匹速度の場合には、紙匹が距離ａを0.3ｍ
secで移動でき、全塗工工程の時間もそれに応じ
て0.6ないし0.9ｍsecとすることができる。塗工物
質の粘度は、ブレード７によりまたは他の何等か
らの類似構成要素によつて塗布物質層に生ずる強
いせん断応力のために低減される。この塗工層の
状態は、塗工層がエア・ナイフ１０の影響を受け
る前には左程変化せず、それによつてエア・ナイ
フの機能の効果を向上される。 At the trailing edge of the applicator there is a blade 7 which does not come into contact with the paper web 1 but leaves a narrow gap 8 between itself and the paper web 1. The coating material 9 supplied from the applicator is absorbed by the paper web and travels with the paper web to the position of the nozzle of the air knife device 10, where the excess coating material is blown off the paper web. Applicator 3
The distance a between the trailing edge and the nozzle of the air knife device 10 is such that the paper web 1 normally covers this distance by less than 5 msec;
It should be narrow enough to move within a period of preferably less than 3 msec. Furthermore, the distance between the leading and trailing edges of the applicator is less than 15 mec, which is the time required for the entire coating process, i.e., for a point on the paper web to move from the leading edge 12 of the applicator to the air knife 10. It is narrowed to less than 9 msec if possible.
In the case of high paper web speed, the paper web reduces distance a by 0.3 m.
sec, and the time for the entire coating process can be adjusted accordingly to 0.6 to 0.9 msec. The viscosity of the coating material is reduced due to the strong shear stress created in the coating material layer by the blade 7 or by any other similar component. The condition of this coating layer does not change significantly before the coating layer is affected by the air knife 10, thereby improving the effectiveness of the air knife function.
塗布器３の前縁には、紙匹１から可成の距離に
位置する調整可能な縁部材１１があり、それによ
つて前記部材自体と紙匹との間に可成広いギヤツ
プ１２が形成される。このギヤツプを経て塗工物
質が塗布器から連続的に流れる。このオーバフロ
ーは、塗布器内の圧力を低く保つことにより、比
較的少ないレベルに調整される。ギヤツプ１２を
経て流出する塗工物質は集収タンク１３内に集め
られ、そこから出口管１４を経て塗工物質の流れ
の系統内に吸い戻される。収集タンク１３の壁は
二重で、その間の空間に冷却水が導かれる。水冷
却によりタンク１３の内面が低温を保つて水がそ
の上に凝縮し、従つて塗工物質はこの面上にそれ
程容易には粘着しない。集収タンク１３の内部で
は、出口管１４内の吸引によつて、圧力が大気圧
よりやや低いレベルに保たれる。これにより、周
囲への塗工物質の拡散が低減される。ブレード７
の外側には、タンク１３の壁の水冷却がそれを清
浄に保つたと同様にして塗工物質によるブレード
７の汚損を低減させる水冷カバー１５がある。 At the front edge of the applicator 3 there is an adjustable edge member 11 located at a considerable distance from the paper web 1, whereby a fairly wide gap 12 is formed between said member itself and the paper web. Ru. The coating material flows continuously from the applicator through this gap. This overflow is regulated to a relatively small level by keeping the pressure in the applicator low. The coating material flowing out through the gap 12 is collected in a collecting tank 13 and from there is sucked back into the coating material flow system via an outlet pipe 14. The collection tank 13 has double walls, and the cooling water is guided into the space between them. Water cooling keeps the inner surface of tank 13 cool so that water condenses thereon so that the coating material does not stick as easily to this surface. Inside the collection tank 13, the pressure is kept at a level slightly below atmospheric pressure by suction in the outlet pipe 14. This reduces the diffusion of the coating substance into the surroundings. blade 7
On the outside is a water-cooled cover 15 which reduces fouling of the blade 7 by coating substances in the same way that water cooling of the walls of the tank 13 keeps it clean.
塗布器が紙匹１に塗布する塗工物質の量は、正
常の条件下では、所望の最終的な塗工量よりも多
い。余剰量は通常約20ないし50％であるが、塗工
物質の実質的な余剰量を与えないように塗工物質
の塗付を行うことも可能である。これは、塗工ブ
レード７を適当な力で紙匹１に向かつて押し付け
ることによつて行われる。 The amount of coating material that the applicator applies to the paper web 1 is, under normal conditions, greater than the desired final coating amount. Although the surplus amount is usually about 20 to 50%, it is possible to apply the coating material so as not to provide a substantial surplus amount of the coating material. This is done by pressing the coating blade 7 towards the paper web 1 with an appropriate force.
本発明はここに示した実施例に限定されるもの
ではなく、その幾つかの修正が添付クレイムの範
囲内において可能である。 The invention is not limited to the embodiments shown here, but several modifications thereof are possible within the scope of the appended claims.
図面は、本発明による塗工機の実施例の断面図
である。
１：紙匹、２：支持ドラム、３：塗布器、４：
導管、５：パワ・シリンダ、６：支え、７：ブレ
ード、８：ギヤツプ、９：塗工物質、１０：エ
ア・ナイフ装置、１１……縁部材、１２：前縁、
１３：収集タンク、１４：出口管、１５：水冷カ
バー、ａ：距離。
The drawing is a sectional view of an embodiment of a coating machine according to the invention. 1: paper web, 2: support drum, 3: applicator, 4:
conduit, 5: power cylinder, 6: support, 7: blade, 8: gap, 9: coating material, 10: air knife device, 11... edge member, 12: leading edge,
13: collection tank, 14: outlet pipe, 15: water cooling cover, a: distance.
Claims (1)
て紙匹上に塗工物質を塗布するために動する紙匹
の移動方向で前記エア・ナイフ装置より前に配設
された塗布帯域とを組み合わせて具備し、正常な
塗工速度で動く際の前記紙匹が塗布帯域を離れて
最大５ｍsec、なるべくなら最大３ｍsec、の時間
内にエア・ナイフ装置に到達するように前記塗布
帯域が前記エア・ナイフ装置に近接して置かれ、
正常な塗工速度で動く際の前記紙匹が塗布帯域に
入つて最大15ｍsec、なるべくなら最大９ｍsec、
の時間内にエア・ナイフ装置に到達するように前
記塗布帯域が動く紙匹の縦方向内で限定されるよ
うにした移動する紙または厚紙の紙匹の少なく共
一面で塗工する装置。 ２ 特許請求の範囲第１項に記載の装置におい
て、紙匹の縦方向における塗布帯域の延長部がほ
ぼ塗布帯域の後端からエア・ナイフ装置までの距
離と同じ長さであるようにした装置。 ３ 特許請求の範囲第１項または第２項に記載の
装置において、前記塗工物質塗布器が、紙匹に向
かう方向に連続的に狭くなる塗工物質供給ダクト
を具えるようにした装置。 ４ 特許請求の範囲第１項または第２項に記載の
装置において、前記塗布器が通常20ないし50％の
塗工物質の余剰量を紙匹上に塗布し、この余剰量
がエア・ナイフ装置によつて取り除かれるように
した装置。 ５ 特許請求の範囲第４項に記載の装置が、塗工
物質の前記余剰量を零に近い値にまで低減させる
装置を包含するようにした装置。 ６ 特許請求の範囲第１項または第２項に記載の
装置が、前記塗布帯域の後縁における塗布器と紙
匹との間のギヤツプと、前記ギヤツプを調整し且
つそれによつて紙匹上に塗布される塗工物質の量
に影響を与える装置とを具備するようにした装
置。 ７ 特許請求の範囲第１項または第２項に記載の
装置が、前記塗布帯域に紙匹が入る位置で、塗布
器と紙匹との間にオーバフロー・ギヤツプを包含
するようにした装置。 ８ 特許請求の範囲第１項または第２項に記載の
移動する紙匹を両面塗工する装置が紙匹の反対側
に対称に配設された２組の前記塗工物質塗布器と
エア・ナイフ装置とを具備するようにした装置。 ９ 特許請求の範囲第１項または第２項に記載の
装置において、紙匹が、エア・ナイフ装置の位置
におけると同様に塗工帯域内で支持ドラムによつ
て支えられるようにした装置。 １０ 特許請求の範囲第１項または第２項に記載
の装置において、紙匹の移動速度が400ｍ／min
よりも大、なるべくなら約600ｍ／minであるよ
うにした装置。Claims: 1. An air knife device and an air knife device disposed in front of the air knife device in the direction of movement of the paper web which is moved to apply a coating substance onto the paper web by a coating substance applicator. the paper web, when moving at a normal coating speed, leaves the coating zone and reaches the air knife device within a maximum of 5 msec, preferably a maximum of 3 msec. the application zone is located in close proximity to the air knife device;
When moving at normal coating speed, the paper web enters the coating zone for a maximum of 15 msec, preferably a maximum of 9 msec,
Apparatus for coating at least one side of a moving web of paper or cardboard, such that the coating zone is confined within the longitudinal direction of the moving web so that it reaches the air knife apparatus within a time of . 2. The apparatus according to claim 1, wherein the extension of the coating zone in the longitudinal direction of the paper web is approximately the same length as the distance from the rear end of the coating zone to the air knife device. . 3. The apparatus according to claim 1 or 2, wherein the coating material applicator comprises a coating material supply duct that becomes continuously narrower in the direction toward the paper web. 4. Apparatus according to claim 1 or 2, in which the applicator applies a surplus amount of coating material, typically 20 to 50%, onto the paper web, and this surplus amount is transferred to the air knife device. A device that is made to be removed by. 5. An apparatus according to claim 4, comprising a device for reducing the surplus amount of coating material to a value close to zero. 6. A device according to claim 1 or 2 for adjusting the gap between the applicator and the paper web at the trailing edge of the coating zone and for adjusting the gap and thereby adjusting the gap on the paper web. and a device for influencing the amount of coating material applied. 7. Apparatus according to claim 1 or 2, including an overflow gap between the applicator and the paper web at a position where the paper web enters the application zone. 8. The device for coating both sides of a moving paper web according to claim 1 or 2 comprises two sets of coating substance applicators and an air-coating device arranged symmetrically on opposite sides of the paper web. A device comprising a knife device. 9. Apparatus as claimed in claim 1 or 2, in which the paper web is supported by a support drum in the coating zone as in the position of the air knife device. 10 In the device according to claim 1 or 2, the moving speed of the paper web is 400 m/min.
The device should be larger than the above, preferably about 600m/min.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI833765 | 1983-10-17 | ||
| FI833765A FI68536C (en) | 1983-10-17 | 1983-10-17 | LUFTKNIVSBESTRYKARE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60102973A JPS60102973A (en) | 1985-06-07 |
| JPH0378146B2 true JPH0378146B2 (en) | 1991-12-12 |
Family
ID=8517923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59215320A Granted JPS60102973A (en) | 1983-10-17 | 1984-10-16 | Coating equipment |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS60102973A (en) |
| CA (1) | CA1230965A (en) |
| DE (1) | DE3438041C2 (en) |
| FI (1) | FI68536C (en) |
| FR (1) | FR2553305B1 (en) |
| IT (1) | IT1176969B (en) |
| NO (1) | NO844132L (en) |
| SE (1) | SE8405099L (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3526178C1 (en) * | 1985-07-23 | 1986-08-14 | Langguth GmbH & Co, 4400 Münster | Gluing process for containers in labeling machines using e.g. of hot melt adhesives |
| DE3745173C2 (en) * | 1986-07-25 | 2000-03-02 | Valmet Corp | Short burst paper coating |
| DE3735889C2 (en) * | 1986-10-25 | 1994-02-03 | Voith Gmbh J M | Coating device |
| JPH0392799U (en) * | 1990-01-11 | 1991-09-20 | ||
| EP0477965A3 (en) * | 1990-09-28 | 1992-05-27 | National Starch And Chemical Investment Holding Corporation | Hot-melt applicator |
| FI97817C (en) * | 1993-10-27 | 1997-02-25 | Valmet Paper Machinery Inc | Method and apparatus for coating a moving web |
| DE19643742A1 (en) * | 1996-10-23 | 1998-04-30 | Vits Maschinenbau Gmbh | Method and device for coating a paper web |
| DE10245074A1 (en) * | 2002-09-27 | 2004-04-01 | Voith Paper Patent Gmbh | Doctor unit wipes off or equalises coating dye applied on running paper or board and features counter pressure unit, which exerts pressure on doctor element at height of pressure gap |
| JPWO2007032060A1 (en) * | 2005-09-13 | 2009-03-19 | サンスター技研株式会社 | High viscosity material applicator |
| DE102012001328A1 (en) * | 2012-01-25 | 2013-07-25 | Olbrich Gmbh | Coating device for flexible webs, has air knife on one side of transport path opposite to application roller and is arranged, such that air flows out of air knife, where flexible web is pressed in direction of application roller |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE255662C (en) * | ||||
| FR1300729A (en) * | 1960-11-04 | 1962-08-10 | Du Pont | A method and apparatus comprising an air knife for coating a web of material with a layer of liquid |
| DE1577722A1 (en) * | 1963-12-06 | 1970-01-29 | Agfa Gevaert Ag | Method and device for coating running films, tapes or the like. With viscous solutions |
| US3676178A (en) * | 1969-04-25 | 1972-07-11 | Agfa Gevaert Ag | Process and apparatus for coating web supports |
-
1983
- 1983-10-17 FI FI833765A patent/FI68536C/en not_active IP Right Cessation
-
1984
- 1984-10-11 SE SE8405099A patent/SE8405099L/en not_active Application Discontinuation
- 1984-10-15 FR FR8415762A patent/FR2553305B1/en not_active Expired
- 1984-10-16 IT IT23156/84A patent/IT1176969B/en active
- 1984-10-16 NO NO844132A patent/NO844132L/en unknown
- 1984-10-16 CA CA000465551A patent/CA1230965A/en not_active Expired
- 1984-10-16 JP JP59215320A patent/JPS60102973A/en active Granted
- 1984-10-17 DE DE3438041A patent/DE3438041C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FI68536C (en) | 1985-10-10 |
| IT8423156A0 (en) | 1984-10-16 |
| JPS60102973A (en) | 1985-06-07 |
| NO844132L (en) | 1985-04-18 |
| IT1176969B (en) | 1987-08-26 |
| FI833765A0 (en) | 1983-10-17 |
| FR2553305A1 (en) | 1985-04-19 |
| DE3438041A1 (en) | 1985-04-25 |
| SE8405099L (en) | 1985-04-18 |
| FI833765A7 (en) | 1985-04-18 |
| DE3438041C2 (en) | 1995-11-23 |
| FR2553305B1 (en) | 1987-08-14 |
| SE8405099D0 (en) | 1984-10-11 |
| CA1230965A (en) | 1988-01-05 |
| FI68536B (en) | 1985-06-28 |
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