FR2642332A1 - Coating machine - Google Patents

Coating machine Download PDF

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Publication number
FR2642332A1
FR2642332A1 FR8901116A FR8901116A FR2642332A1 FR 2642332 A1 FR2642332 A1 FR 2642332A1 FR 8901116 A FR8901116 A FR 8901116A FR 8901116 A FR8901116 A FR 8901116A FR 2642332 A1 FR2642332 A1 FR 2642332A1
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FR
France
Prior art keywords
doctor blade
substrate
support
coating
adjusting
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.)
Withdrawn
Application number
FR8901116A
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French (fr)
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR8901116A priority Critical patent/FR2642332A1/en
Publication of FR2642332A1 publication Critical patent/FR2642332A1/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02Apparatus 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
    • B05C11/04Apparatus 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 blades

Abstract

The essential characteristic of the machine resides in the presence, beneath the doctor (scaper) blade 3, of a groove 2 made in the support 1 of the substrate 4, thus allowing the easy passage of the couplings (connectors) 7. A height-adjustable roller 6 enables the angle alpha to be adjusted and therefore the thickness of the coating 5 deposited on the substrate with uniformity of the weighting over the entire width.

Description

Machine à enduire
La présente invention concerne une machine à enduire, destinée à déposer en continu une couche mince d'un enduit liquide ou pâteux sur un substrat souple ou semi-rigide en défilement sur un support, du type comportant, au-dessus dudit support, une racle s 'étendant essentiellement transversalement à la direction du défilement, et associée à des premiers moyens de réglage de l'espacement entre son arête inférieure et ledit substrat, laquelle'machine comporte en outre des moyens d'alimentation propres à déposer l'enduit sur ledit substratr en arrière de la racle.
Coating machine
The present invention relates to a coating machine, intended for continuously depositing a thin layer of a liquid or pasty coating on a flexible or semi-rigid substrate running on a support, of the type comprising, above said support, a doctor blade extending essentially transversely to the direction of travel, and associated with first means for adjusting the spacing between its lower edge and said substrate, which machine further comprises supply means suitable for depositing the coating on said substrate behind the doctor blade.

Le substrat souple peut etre une bande de largeur variable, pouvant même se réduire à un ruban, en un matériau mince quelconque, tel que tissu, papier, métal, matière plastique ou autre, et -ltenduit liquide ou pâteux peut être constitué d'une colle, mastic, vernis, ou tout autre produit qu'il est approprié de déposer sur le substrat. The flexible substrate may be a strip of variable width, which can even be reduced to a ribbon, of any thin material, such as fabric, paper, metal, plastic or other material, and the liquid or pasty coating may consist of a glue, putty, varnish, or any other product that it is appropriate to deposit on the substrate.

Dans les machines à grande production, on fait en sorte que le défilement soit continu, et c'est pourquoi on constitue de grandes bobines comportant plusieurs longueurs de substrat raccordées les unes aux autres. In large production machines, it is made so that the running is continuous, and that is why large coils are formed comprising several lengths of substrate connected to each other.

Il en résulte une surépaisseur au niveau des raccords, et de fréquents accrochages de ces raccords sur l'arête inférieure de la racle, allant Jusqu'à provoquer un arret du défilement du substrat, par blocage du moteur d'entrainement, et quelquefois meme la rupture du substrat. Cela interrompt la production et nécessite l'intervention d'un opérateur pour dégager le raccord ou le réparer et permettre que le defilement du substrat se poursuive. This results in an excess thickness at the level of the fittings, and frequent hooking of these fittings on the lower edge of the doctor blade, going so far as to cause the running of the substrate to stop, by blocking the drive motor, and sometimes even the rupture of the substrate. This interrupts production and requires the intervention of an operator to clear the connection or repair it and allow the running of the substrate to continue.

Il s'agit là, évidemment, de facteurs défavorables quant au rendement de la production. These are, of course, unfavorable factors in terms of production efficiency.

Le but de la présente invention est de remédier à ces inconvénients, et d'éviter ce risque d'accrochage des raccords sur la racle, ainsi que le risque de rupture du substrat. The object of the present invention is to remedy these drawbacks, and to avoid this risk of the fittings hooking onto the doctor blade, as well as the risk of the substrate breaking.

Un autre but de l'invention est également de rendre plus régulière la pose de l'enduit, de permettre de mieux régler l'épaisseur déposée sur le substrat, et de permettre, en cas de besoin, de déposer de très faibles épaisseurs d'enduit pour obtenir de très faibles grammages. Another object of the invention is also to make the installation of the coating more regular, to allow better adjustment of the thickness deposited on the substrate, and to allow, if necessary, to deposit very small thicknesses of coated to obtain very low grammages.

Ces buts sont atteints, dans une machine du type défini au début, par un perfectionnement caractérisé d'une part en ce que ledit support comporte une rainure s'étendant sous ladite racle et sur toute sa longueur, cette rainure étant légèrement plus large que l'épaisseur de la racle, et d'autre part en ce que lesdits moyens de réglage sont agencés pour permettre à ladite arête inférieure de la racle d'arriver à un niveau inférieur à celui de la surface supérieure dudit support. These aims are achieved, in a machine of the type defined at the start, by an improvement characterized on the one hand in that said support comprises a groove extending under said doctor blade and over its entire length, this groove being slightly wider than the 'thickness of the doctor blade, and secondly in that said adjusting means are arranged to allow said lower edge of the doctor blade to reach a level lower than that of the upper surface of said support.

Ainsi, le passage des raccords sera facilité, puisqu'ils trouveront toujours, dans la rainure, l'espace nécessaire pour passer, et ceci avec un accrochage sur l'arête inférieure de la racle beaucoup moins important qu'auparavant, et en tout cas sans aucun risque de rupture du substrat. Thus, the passage of the fittings will be facilitated, since they will always find, in the groove, the space necessary to pass, and this with a hooking on the lower edge of the doctor blade much less important than before, and in any case without any risk of breaking the substrate.

Par ailleurs, l'arête inférieure de la racle pouvant pénétrer dans a rainure, on conçoit qu'elle pourra être en contact avec le substrat, contrairement à ce qui était le cas avec les machines connues, ce qui permettra de déposer sur le substrat des couches d'enduit beaucoup plus minces qu'auparavant, d'ou une économie de matière. Furthermore, the lower edge of the doctor blade being able to penetrate into a groove, it is understandable that it may be in contact with the substrate, unlike what was the case with known machines, which will make it possible to deposit on the substrate plaster layers much thinner than before, saving material.

D'autre part, en réglant la profondeur d'engagement de la partie inférieure de la racle dans la rainure, on réglera la pression exercée par l'arête inférieure de cette racle sur le substrat, et donc l'épaisseur de l'enduit, et ceci très facilement. On the other hand, by adjusting the depth of engagement of the lower part of the doctor blade in the groove, the pressure exerted by the lower edge of this doctor blade will be adjusted on the substrate, and therefore the thickness of the coating, and this very easily.

Dans le même but, la machine pourra d'ailleurs comporter des seconds moyens de réglage de l'angle d'entrez et/ou de sortie, entre la surface du substrat et le plan de la racle, ces moyens pouvant comprendre, en amont et/ou en aval de la racle, un rouleau tenseur du substrat, associé à des moyens de réglage de sa hauteur. For the same purpose, the machine may also include second means for adjusting the angle of entry and / or exit, between the surface of the substrate and the plane of the doctor blade, these means possibly comprising, upstream and / or downstream of the doctor blade, a tensor roller of the substrate, associated with means for adjusting its height.

En rendant plus aigu l'angle entre le plan de la racle et la surface du substrat à sa sortie de la rainure, par exemple, on pourra facilement réduire l'épaisseur de l'enduit Jusqu'à des valeurs de grammage extrêmement faibles. By making the angle between the doctor blade plane and the surface of the substrate at its exit from the groove more acute, for example, the thickness of the coating can easily be reduced to extremely low grammage values.

Sur la figure tunique du dessin annexé, on a représenté schématiquement et partiellement une machine conforme à l'invention, vue de profil. In the tunic figure of the appended drawing, there is shown schematically and partially a machine according to the invention, seen in profile.

Sur cette figure, la référence 1 désigne le support, réalisé sous la forme d'une surface plane, mais qui pourrait également être cylindrique. La rainure est référencée 2, et la racle 3. Le substrat 4 défilant dans le sens des fleches, des moyens d'alimentation appropriés délivrent de la colle ou tout autre enduit 5 sur le substrat, en amont de la racle 3. La hauteur de celle-ci est réglable par tous moyens appropriés, vis micrométriques, cales ou analogues. In this figure, the reference 1 designates the support, produced in the form of a flat surface, but which could also be cylindrical. The groove is referenced 2, and the doctor blade 3. The substrate 4 moving in the direction of the arrows, suitable supply means deliver glue or any other coating 5 on the substrate, upstream of the doctor blade 3. The height of it is adjustable by any appropriate means, micrometric screws, wedges or the like.

En aval de la racle est disposé un rouleau tenseur de hauteur également réglable 6. Un raccord du substrat a été représente en 7. On voit qu'il pourra passer facilement sous la racle, grâce à l'espace ménagé par la rainure 2. En réglant l'angle de sortie a, par modification de la hauteur du rouleau 6, on pourra facilement régler l'épaisseur de l'enduit sur le substrat. Downstream of the doctor blade is arranged a tension roller also adjustable in height 6. A connection of the substrate has been shown at 7. It can be seen that it can easily pass under the doctor blade, thanks to the space provided by the groove 2. In adjusting the outlet angle a, by changing the height of the roller 6, the thickness of the coating on the substrate can easily be adjusted.

Il va de soi qu'avec une telle machine on peut réaliser également des grammages importants, en relevant la racle 3 pour que son arête inférieure vienne se positionner au-dessus de la surface supérieure du support 1. It goes without saying that with such a machine it is also possible to produce large grammages, by raising the doctor blade 3 so that its lower edge comes to be positioned above the upper surface of the support 1.

L'invention permet dans tous les cas d'éviter les pertes de matière et les pertes de temps. Le fait d'éviter tous les incidents de fonctionnement des machines connues permet un gain de temps supérieur à 30 % à production égale.  The invention makes it possible in all cases to avoid loss of material and loss of time. The fact of avoiding all operating incidents of known machines allows a saving of time greater than 30% for equal production.

Claims (3)

REVENDICATIONS 1. Machine à enduire, destinée à déposer en continu une couche mince d'un enduit liquide ou pâteux sur un substrat souple ou semi-rigide en défilement sur un support, du type comportant, au-dessus dudit support, une racle s'étendant essentiellement transversalement à la direction du défilement, et associée à des premiers moyens de réglage de l'espacement entre son arête inférieure et ledit substrat, laquelle machine comporte en outre des moyens d'alimentation propres à déposer l'enduit sur ledit substrat, en arrière de la racle, caractérisée d'une part en ce que ledit support comporte une rainure s'étendant sous ladite racle et sur toute sa longueur, cette rainure etant légèrement plus large que l'épaisseur de la racle, et d'autre part en ce que lesdits moyens de réglage sont agencés pour permettre à ladite arête inférieure de la racle d'arriver à un niveau inférieur à celui de la surface supérieure dudit support. 1. Coating machine, intended for continuously depositing a thin layer of a liquid or pasty coating on a flexible or semi-rigid substrate running on a support, of the type comprising, above said support, a doctor blade extending essentially transverse to the direction of travel, and associated with first means for adjusting the spacing between its lower edge and said substrate, which machine further comprises supply means suitable for depositing the coating on said substrate, behind of the doctor blade, characterized on the one hand in that said support comprises a groove extending under said doctor blade and over its entire length, this groove being slightly wider than the thickness of the doctor blade, and on the other hand in that that said adjustment means are arranged to allow said lower edge of the doctor blade to reach a level lower than that of the upper surface of said support. 2. Machine selon la revendication 1, caractérisée en ce qu'elle comporte des seconds moyens de reglage de l'angle d'entrée et/ou de sortie,-entre la surface du substrat et le plan de la racle. 2. Machine according to claim 1, characterized in that it comprises second means for adjusting the angle of entry and / or exit, -between the surface of the substrate and the plane of the doctor blade. 3. Machine selon la revendication 2, caractérisée en ce que lesdits seconds moyens de réglage comprennent, en amont et/ou en aval de la racle, un rouleau tenseur du substrat, associé à des moyens de réglage de sa hauteur, permettant un grammage léger avec régularité sur toute la laize.  3. Machine according to claim 2, characterized in that said second adjustment means comprise, upstream and / or downstream of the doctor blade, a tensioning roller of the substrate, associated with means of adjusting its height, allowing a light grammage with regularity over the whole width.
FR8901116A 1989-01-30 1989-01-30 Coating machine Withdrawn FR2642332A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8901116A FR2642332A1 (en) 1989-01-30 1989-01-30 Coating machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8901116A FR2642332A1 (en) 1989-01-30 1989-01-30 Coating machine

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FR2642332A1 true FR2642332A1 (en) 1990-08-03

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FR8901116A Withdrawn FR2642332A1 (en) 1989-01-30 1989-01-30 Coating machine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1015008A3 (en) * 2001-05-17 2004-08-03 Bayer Ag Base plate a gap for uniform coating to carpet.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2360353A1 (en) * 1976-08-05 1978-03-03 Bachofen & Meier Maschf COATING AND DOSING DEVICE, IN PARTICULAR FOR THE DISTRIBUTION OF A FLUID AGENT ON A BAND OF PRIMING MATERIAL, PAPER, CARDBOARD, PLASTIC MATERIAL, METAL OR TEXTILE
DE3438652A1 (en) * 1983-10-22 1985-05-09 Konishiroku Photo Industry Co., Ltd., Tokio/Tokyo Coating method and device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2360353A1 (en) * 1976-08-05 1978-03-03 Bachofen & Meier Maschf COATING AND DOSING DEVICE, IN PARTICULAR FOR THE DISTRIBUTION OF A FLUID AGENT ON A BAND OF PRIMING MATERIAL, PAPER, CARDBOARD, PLASTIC MATERIAL, METAL OR TEXTILE
DE3438652A1 (en) * 1983-10-22 1985-05-09 Konishiroku Photo Industry Co., Ltd., Tokio/Tokyo Coating method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1015008A3 (en) * 2001-05-17 2004-08-03 Bayer Ag Base plate a gap for uniform coating to carpet.
US6908641B2 (en) * 2001-05-17 2005-06-21 Bayer Materialscience Llc Gapped bedplate for uniform carpet back coating

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