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EP0373276A1 - Process and apparatus for continuously spraying adjuvants on porous webs during their movement - Google Patents

Process and apparatus for continuously spraying adjuvants on porous webs during their movement Download PDF

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Publication number
EP0373276A1
EP0373276A1 EP19880450039 EP88450039A EP0373276A1 EP 0373276 A1 EP0373276 A1 EP 0373276A1 EP 19880450039 EP19880450039 EP 19880450039 EP 88450039 A EP88450039 A EP 88450039A EP 0373276 A1 EP0373276 A1 EP 0373276A1
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EP
European Patent Office
Prior art keywords
spraying
strip
paper
adjuvants
conduits
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Withdrawn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
EP19880450039
Other languages
German (de)
French (fr)
Inventor
Alain Colas
Maurice Nicollet
Dominique Jouanlau
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.)
OGILVIE AQUITAINE S.A.
Original Assignee
OGILVIE AQUITAINE SA
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 OGILVIE AQUITAINE SA filed Critical OGILVIE AQUITAINE SA
Publication of EP0373276A1 publication Critical patent/EP0373276A1/en
Withdrawn legal-status Critical Current

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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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/50—Spraying or projecting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/24—Addition to the formed paper during paper manufacture
    • D21H23/26—Addition to the formed paper during paper manufacture by selecting point of addition or moisture content of the paper
    • D21H23/28—Addition before the dryer section, e.g. at the wet end or press section

Definitions

  • the present invention relates to a method and device in accordance with said method, for continuous spraying of additives on permeable products in strips during their movement such as paper, fabric, etc.
  • This type of device has various drawbacks, in particular at the level of the position of the single ramp with respect to the sheet of paper and of its variable dryness according to the kinds of paper produced, said ramp being fixed or movable longitudinally does not allow optimization of the retention and distribution of starch granules in the thickness of the sheet, this being due to the fact of the constant spacing of the nozzles of the ramp relative to the sheet of paper being formed whatever the different kinds of paper produced which have different aptitudes for the internal migration of the granules depending mainly on the thickness and the dryness of the sheet perpendicular to said ramp, it is practically impossible to saturate the thickness of said sheet because either the starch granules preferentially concentrate in the surface area called the felt side, or penetrate unevenly into the paper thickness according to preferred areas, or said starch granules are entrained towards the lower face called the canvas face and a large part of which is discharged into the drainage water, on the other hand it does not make it possible to remedy the defects borders, in the case where it
  • the object of the method and device which is the subject of the invention is to overcome the drawbacks described above.
  • the process and device which is the subject of the invention are characterized in that the process consists in spraying the starch milk continuously and in successive layers at different stages of dryness of the sheet of paper in formation so as to saturate it with granules.
  • thickness of the sheet by means of the device which comprises spray booms maintained in position in the transverse direction of the table for forming the sheet of paper each by means of a pivoting support frame, adjustable in height and movable along the training table, each spraying boom being constituted by two conduits supplied in series or parallel under pressure with starch milk homogenized in a capacity, said conduits being provided with spray nozzles distributed at given intervals according to geometric arrangements, such as staggered, so that the surface of the paper receives an equal amount of starch granules for are scrolled, at each end and near the edges of the achievable sheets of paper, each duct is provided with an independent adjustable spray nozzle integral with a secondary duct so as to diffuse an additional quantity of starch granules at said borders of sheets of paper
  • a continuous spraying device comprises a support frame 1 pivoting relative to the upright 2 disposed on one side of the mat 3 for forming the sheet of paper, said upright 2 being movable in the longitudinal direction of said carpet 3 and said framework 1 is adjustable in height so as to adjust, according to the specific dryness and penetration conditions of the starch granules, the positioning of the ramp 13 both in the longitudinal direction of the carpet and vertically the spacing of the nozzles spraying 4 relative to the sheet of paper being formed, said nozzles being distributed according to a given interval on the two conduits 5 constituting the ramp 13 for supplying starch milk under pressure, adjusted, regulated and filtered in a known manner by means at least one pump 14, said starch milk being homogenized beforehand in a capacity 6 provided with an agitator 7.
  • the spray nozzles 4 on the two conduits 5 constituting a ramp 13 are distributed in a geometric arrangement such as in staggered rows and this so as to perfect the distribution of the starch granules on the sheet of paper during the projection of the fog of starch milk.
  • each spray nozzle 4 is provided with a stop valve 8 allowing, depending on their height adjustment with respect to said sheet of paper, their use or not.
  • each end of the conduits 5 and near said edges 9 an adjustable and independent nozzle 10 provided with a shut-off valve 10a is attached, said nozzles 10 are integral with a fixed or movable conduit 11 connected to each conduit 5, the orientation of each nozzle 10 and conduit 11 is such that it makes it possible to direct the spraying along the width of the sheet of paper .
  • conduits 5 can be supplied under pressure with starch milk in series or in parallel.
  • the frameworks 1 at the opposite end of the uprights 2 are each immobilized at the height chosen on an upright 12 by any suitable known means, the same is true when one of the ramps is not used and when it is arranged parallel to the sheet forming mat, it is immobilized on an upright 16.
  • a spraying device may include a series of booms 13 supported by a common frame 15 having the same characteristics as the frame 1 in particular adjustable in height for the distribution of the spray, pivoting to release the carpet 3 when not in use or for changing said mat 3 and movable in the longitudinal direction of the mat 3.
  • the ramps 13 are distributed along the drip table and this so as to saturate the sheet in thickness by successive layers of starch granules as and as it changes in dryness, the ramps 13 are arranged on demand according to a regular or irregular spacing therebetween.

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Abstract

The invention relates to a process and device in accordance with the said process for continuous spraying of adjuvants such as starch milk onto permeable products in strip form such as paper while they travel past, consisting in spraying the adjuvants at various stages of dryness of the strip being formed by means of one or more spraying racks (13) each supported by a support framework (1) pivoting relative to an upright (2) placed on one side of the forming belt (3), each rack (13) consisting of two conduits (5) for delivering adjuvants under pressure, each provided with spraying nozzles (4) distributed in geometrical arrangements so that the surface of the strip product receives an equal quantity of adjuvants, near the edges (9) of the strip products, each conduit (5) is provided with a swivelling spraying nozzle (10) integrally attached to a stationary or movable conduit (11) so as to spray an additional quantity of adjuvants in the region of the said edges (9) so as to alleviate edge faults. <IMAGE>

Description

La présente invention concerne un procédé et dispositif conforme audit procédé, de pulvérisation continue d'adjuvants sur des produits perméables en bandes lors de leur défilement tels que papier, tissu, etc.The present invention relates to a method and device in accordance with said method, for continuous spraying of additives on permeable products in strips during their movement such as paper, fabric, etc.

Dans l'industrie papetière par exemple on connaît pour le renforcement et l'adaptation de certaines propriétés du papier pour des utilisations spécifiques, de procéder à l'adjonction d'adjuvants divers d'origine minérale, végétale ou synthétique, ces adjonctions d'adjuvants sont réalisées de différentes manières, notamment en masse par introduction de l'adjuvant dans la pate à papier avant la fabrication de la feuille, en surface par étalement de l'adjuvant sur la feuille séche lors de son passage entre deux rouleaux presseurs ou par couchage consistant à étaler sur la surface de la feuille séche une solution contenant l'adjuvant, on connaît aussi l'application en surface par pulvérisation de l'adjuvant tel que lait d'amidon décrit dans le brevet FR 1 407 510 au moyen d'une rampe unique placée transversalement au sens de déplacement du papier sur laquelle sont disposés à intervalles donnés des pulvérisateurs destinés à projeter sous forme de brouillard le lait d'amidon contenu dans une capacité équipée d'un agitateur permettant l'homogénéisation de l'amidon et de l'eau, ledit lait au moyen d'une pompe et tuyauterie dotée de filtres est dirigé sous pression vers les pulvérisateurs, ladite pression étant contrôlée au moyen de manomètres et des vannes permettant de régler à volonté le débit.In the paper industry, for example, for the reinforcement and adaptation of certain properties of paper for specific uses, it is known to add various additives of mineral, vegetable or synthetic origin, these additions of additives are produced in various ways, in particular by mass by introducing the adjuvant into the paper pulp before the sheet is made, on the surface by spreading the adjuvant on the dry sheet during its passage between two pressure rollers or by coating consisting in spreading on the surface of the dry sheet a solution containing the adjuvant, application of the adjuvant such as starch milk described in patent FR 1 407 510 is also known on the surface by spraying single ramp placed transversely to the direction of movement of the paper on which sprayers intended to spray in the form of mist are placed at given intervals e starch milk contained in a capacity equipped with a stirrer allowing the homogenization of starch and water, said milk by means of a pump and piping provided with filters is directed under pressure to the sprayers, said pressure being controlled by means of pressure gauges and valves allowing the flow rate to be adjusted as desired.

Ce genre de dispositif présente différents inconvénients notamment au niveau de la position de la rampe unique par rapport à la feuille de papier et de sa siccité variable selon les sortes de papier fabriqué, ladite rampe étant fixe ou mobile longitudinalement ne permet pas une optimisation de la rétention et de la répartition des granules d'amidon dans l'épaisseur de la feuille, ceci étant dû au fait de l'écartement constant des buses de la rampe par rapport à la feuille de papier en formation quelque soit les différentes sortes de papier fabriqué qui présentent des aptitudes différentes à la migration interne des granules dépendant principalement de l'épaisseur et de la siccité de la feuille à l'aplomb de ladite rampe, il est pratiquement impossible de saturer dans l'épaisseur ladite feuille car soit les granules d'amidon se concentrent préféren­tiellement dans la zone de surface appelée face feutre, ou pénétrent de façon inégale dans l'épaisseur du papier selon des zones préférentielles, ou lesdites granules d'amidon sont entraînées vers la face inférieure appelée face toile et dont une grande partie est évacuée dans les eaux d'égouttage, d'autre part il ne permet pas de remédier aux défauts de bordures, dans le cas où il n'est pas nécessaire de pulvériser de l'amidon, la rampe en poste fixe provoque avec le phénomène de condensation la constitution de gouttes retombant sur la feuille de papier en formation engendrant des défauts dans l'épair de la feuille no­tamment appelé "un clair" d'où des faiblesses dans la feuille et de ce fait des points de rupture préférentiels, compte tenu de la position fixe de la rampe cette dernière ne contribue pas à l'optimisation des temps d'arrêts pour le changement de la toile de formation par exemple.This type of device has various drawbacks, in particular at the level of the position of the single ramp with respect to the sheet of paper and of its variable dryness according to the kinds of paper produced, said ramp being fixed or movable longitudinally does not allow optimization of the retention and distribution of starch granules in the thickness of the sheet, this being due to the fact of the constant spacing of the nozzles of the ramp relative to the sheet of paper being formed whatever the different kinds of paper produced which have different aptitudes for the internal migration of the granules depending mainly on the thickness and the dryness of the sheet perpendicular to said ramp, it is practically impossible to saturate the thickness of said sheet because either the starch granules preferentially concentrate in the surface area called the felt side, or penetrate unevenly into the paper thickness according to preferred areas, or said starch granules are entrained towards the lower face called the canvas face and a large part of which is discharged into the drainage water, on the other hand it does not make it possible to remedy the defects borders, in the case where it is not necessary to spray starch, the stationary boom causes with the phenomenon of condensation the formation of drops falling on the sheet of paper in formation generating defects in the air of the sheet in particular called "a clear" hence weaknesses in the sheet and therefore preferential breaking points, taking into account the fixed position of the ramp, the latter does not contribute to optimizing downtime for changing the training fabric, for example.

Le procédé et dispositif objet de l'invention ont pour but de pallier aux incon­vénients précédemment exposés.The object of the method and device which is the subject of the invention is to overcome the drawbacks described above.

Le procédé et dispositif objet de l'invention sont caractérisés en ce que le procédé consiste à pulvériser en continu et par couches successives à différents stades de siccité de la feuille de papier en formation le lait d'ami­don de manière à saturer en granules l'épaisseur de la feuille au moyen du dispositif qui comporte des rampes de pulvérisation maintenues en position selon le sens transversal de la table de formation de la feuille de papier chacune au moyen d'une ossature support pivotante, réglable en hauteur et mobile le long de la table de formation, chaque rampe de pulvérisation étant constituée par deux conduits alimentés en série ou parallèle sous pression en lait d'amidon homogénéisé dans une capacité, lesdits conduits étant pourvus de buses de pulvérisation réparties à intervalles donnés selon des arrangements géométriques, tel qu'en quinconce, de sorte à ce que la surface du papier recoive une quantité égale de granules d'amidon durant sont défilement, à chaque extrémité et à proximité des bordures des feuilles de papier réalisables, chaque conduit est doté d'une buse de pulvérisation indépendante orientable solidaire d'un conduit secondaire de sorte à diffuser une quantité supplémentaire de granules d'amidon au niveau desdites bordures de feuilles de papier.The process and device which is the subject of the invention are characterized in that the process consists in spraying the starch milk continuously and in successive layers at different stages of dryness of the sheet of paper in formation so as to saturate it with granules. thickness of the sheet by means of the device which comprises spray booms maintained in position in the transverse direction of the table for forming the sheet of paper each by means of a pivoting support frame, adjustable in height and movable along the training table, each spraying boom being constituted by two conduits supplied in series or parallel under pressure with starch milk homogenized in a capacity, said conduits being provided with spray nozzles distributed at given intervals according to geometric arrangements, such as staggered, so that the surface of the paper receives an equal amount of starch granules for are scrolled, at each end and near the edges of the achievable sheets of paper, each duct is provided with an independent adjustable spray nozzle integral with a secondary duct so as to diffuse an additional quantity of starch granules at said borders of sheets of paper.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description qui va suivre faite en regard des dessins joints donnés à titre d'exemple non limitatif, où :

  • - la figure 1 est une vue en élévation d'une rampe de pulvérisation
  • - la figure 2, une vue en plan d'une rampe de pulvérisation,
  • - la figure 3, une vue en plan d'une variante de réalisation d'une rampe.
  • - la figure 4, une série de rampes réparties au niveau de la station d'égouttage progressif.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given with regard to the accompanying drawings given by way of nonlimiting example, where:
  • - Figure 1 is an elevational view of a spray boom
  • FIG. 2, a plan view of a spray boom,
  • - Figure 3, a plan view of an alternative embodiment of a ramp.
  • - Figure 4, a series of ramps distributed at the progressive drainage station.

Tel que représenté figures 1 et 2, un dispositif de pulvérisation en continu comporte une ossature support 1 pivotante par rapport au montant 2 disposé d'un côté du tapis 3 de formation de la feuille de papier, ledit montant 2 étant mobile selon le sens longitudinal dudit tapis 3 et ladite ossature 1 est réglable en hauteur de sorte à ajuster selon les conditions de siccité et de pénétration spécifiques des granules d'amidon le positionnement de la rampe 13 tant dans le sens longitudinal du tapis que verticalement l'écartement des buses de pulvérisation 4 par rapport à la feuille de papier en formation, lesdites buses étant réparties selon un intervalle donné sur les deux conduits 5 cons­tituant la rampe 13 d'amenée sous pression du lait d'amidon, réglé, régulé et filtré de manière connue au moyen d'au moins une pompe 14, ledit lait d'amidon étant au préalable homogénéisé dans une capacité 6 dotée d'un agitateur 7.As shown in Figures 1 and 2, a continuous spraying device comprises a support frame 1 pivoting relative to the upright 2 disposed on one side of the mat 3 for forming the sheet of paper, said upright 2 being movable in the longitudinal direction of said carpet 3 and said framework 1 is adjustable in height so as to adjust, according to the specific dryness and penetration conditions of the starch granules, the positioning of the ramp 13 both in the longitudinal direction of the carpet and vertically the spacing of the nozzles spraying 4 relative to the sheet of paper being formed, said nozzles being distributed according to a given interval on the two conduits 5 constituting the ramp 13 for supplying starch milk under pressure, adjusted, regulated and filtered in a known manner by means at least one pump 14, said starch milk being homogenized beforehand in a capacity 6 provided with an agitator 7.

Les buses de pulvérisation 4 sur les deux conduits 5 constituant une rampe 13 sont réparties selon un arrangement géométrique tel qu'en quinconce et ce de manière à parfaire la répartition des granules d'amidon sur la feuille de papier lors de la projection du brouillard de lait d'amidon.The spray nozzles 4 on the two conduits 5 constituting a ramp 13 are distributed in a geometric arrangement such as in staggered rows and this so as to perfect the distribution of the starch granules on the sheet of paper during the projection of the fog of starch milk.

De sorte à adapter le dispositif de pulvérisation à toutes sortes de qualité de papier recherchée, chaque buse de pulvérisation 4 est dotée une vanne d'arrêt 8 permettant selon leur réglage en hauteur par rapport à la dite feuille de papier leur utilisation ou non.So as to adapt the spraying device to all kinds of desired quality of paper, each spray nozzle 4 is provided with a stop valve 8 allowing, depending on their height adjustment with respect to said sheet of paper, their use or not.

Afin de procéder à la répartition des granules d'amidon en bordure 9 de la feuille de papier, en chaque extrémité des conduits 5 et à proximité desdites bordures 9 une buse 10 orientable et indépendante dotée d'une vanne d'arrêt 10a est rapportée, lesdites buses 10 sont solidaires d'un conduit 11 fixe ou mobile raccordé à chaque conduit 5, l'orientation dechaque buse 10 et conduit 11 est telle qu'elle permet de diriger selon la largeur de la feuille de papier la pulvérisation.In order to distribute the starch granules at the edge 9 of the paper sheet, at each end of the conduits 5 and near said edges 9 an adjustable and independent nozzle 10 provided with a shut-off valve 10a is attached, said nozzles 10 are integral with a fixed or movable conduit 11 connected to each conduit 5, the orientation of each nozzle 10 and conduit 11 is such that it makes it possible to direct the spraying along the width of the sheet of paper .

Il va de soi que les conduits 5 peuvent être alimentés sous pression en lait d'amidon en série ou en parallèle.It goes without saying that the conduits 5 can be supplied under pressure with starch milk in series or in parallel.

Lorsque le dispositif de pulvérisation est placé selon le sens transversal du tapis 3 de formation de la feuille de papier, les ossatures 1 en l'extrémité opposée des montants 2 sont immobilisées chacune à la hauteur choisie sur un montant 12 par tous moyens appropriés connus, il en est de même lorsqu'une des rampes n'est pas utilisée et qu'elle est disposée parallèlement au tapis de formation de la feuille de papier, elle est immobilisée sur un montant 16.When the spraying device is placed in the transverse direction of the mat 3 for forming the sheet of paper, the frameworks 1 at the opposite end of the uprights 2 are each immobilized at the height chosen on an upright 12 by any suitable known means, the same is true when one of the ramps is not used and when it is arranged parallel to the sheet forming mat, it is immobilized on an upright 16.

Selon la variante représentée figure 3, un dispositif de pulvérisation peut comporter une série de rampes 13 supportées par une ossature commune 15 présentant les mêmes caractéristiques que l'ossature 1 notamment réglable en hauteur pour la répartition de la pulvérisation, pivotante pour dégager le tapis 3 lors de la non utilisation ou pour le changement dudit tapis 3 et mobile selon le sens longitudinal du tapis 3.According to the variant shown in Figure 3, a spraying device may include a series of booms 13 supported by a common frame 15 having the same characteristics as the frame 1 in particular adjustable in height for the distribution of the spray, pivoting to release the carpet 3 when not in use or for changing said mat 3 and movable in the longitudinal direction of the mat 3.

Suivant les variétés de papier à obtenir et tel que représenté figure 4, les rampes 13 sont réparties le long de la table d'égouttage et ce de manière à saturer la feuille dans l'épaisseur par couches successives de granules d'amidon au fur et à mesure de sa modification de siccité, les rampes 13 étant disposées à la demande selon un écartement régulier ou irrégulier entre elles.According to the varieties of paper to be obtained and as represented in FIG. 4, the ramps 13 are distributed along the drip table and this so as to saturate the sheet in thickness by successive layers of starch granules as and as it changes in dryness, the ramps 13 are arranged on demand according to a regular or irregular spacing therebetween.

Claims (8)

1°) Procédé de pulvérisation continue d'adjuvants tel que lait d'amidon sur des produits perméables en bande, tels que papier et tissu, lors de leur défilement caractérisé en ce qu'il consiste à pulvériser de manière continue à différents stades de siccité de la bande en formation le lait d'amidon au moyen de rampes de pulvérisation de manière à saturer en granules l'épaisseur de la bande par couches successives au niveau de la station d'égouttage.1) continuous spraying process of additives such as starch milk on permeable products in a strip, such as paper and fabric, during their scrolling characterized in that it consists in spraying continuously at different stages of dryness of the strip forming the starch milk by means of spraying booms so as to saturate the thickness of the strip in granules in successive layers at the level of the draining station. 2°) Dispositif de pulvérisation continue d'adjuvants tel que lait d'amidon sur des produits perméables en bande, papier ou tissu, lors de leur défilement caractérisé en ce qu'il comporte des rampes de pulvérisation (13) réparties le long de la table d'égouttage, chaque rampe étant constituée par deux conduits (5) dotés de buses de pulvérisation (4, 10), chaque rampe (13) étant maintenue au moyen d'une ossature support (1) pivotante par rapport à un montant (2) placé sur un côté du tapis (3) de formation support de produit, ladite ossature (1) étant réglable en hauteur par rapport audit tapis (3) et mobile selon le sens longitudinal dudit tapis (3), les buses (4) étant réparties sur les conduits (5) selon un intervalle et arrangement géométrique donné et les buses (10) placées aux extrémités de chaque conduit (5) à proximité des bordures (9) des produits en bande.2) device for continuous spraying of additives such as starch milk onto permeable products in a strip, paper or fabric, when they are scrolled, characterized in that it comprises spray bars (13) distributed along the drip table, each boom being formed by two conduits (5) provided with spray nozzles (4, 10), each boom (13) being held by means of a support frame (1) pivotable relative to an upright ( 2) placed on one side of the product support formation mat (3), said frame (1) being adjustable in height with respect to said mat (3) and movable in the longitudinal direction of said mat (3), the nozzles (4) being distributed over the conduits (5) according to a given interval and geometrical arrangement and the nozzles (10) placed at the ends of each conduit (5) near the edges (9) of the strip products. 3°) Dispositif de pulvérisation selon la revendication 2 caractérisé en ce que les buses de pulvérisation (4) sont réparties sur les conduits (5) selon un arran­gement géométrique tel qu'en quinconce.3 °) spraying device according to claim 2 characterized in that the spray nozzles (4) are distributed over the conduits (5) in a geometric arrangement such as staggered. 4°) Dispositif de pulvérisation selon la revendication 2 caractérisé en ce que les buses (10) aux extrémités des conduits (5) à proximité des bordures (9) des produits en bande, sont orientables et indépendantes (10) et dotées d'une vanne d'arrêt (10a).4 °) spraying device according to claim 2 characterized in that the nozzles (10) at the ends of the conduits (5) near the edges (9) of the strip products, are orientable and independent (10) and provided with a stop valve (10a). 5°) Dispositif de pulvérisation selon la revendication 4 caractérisé en ce que les buses (10) orientables sont solidaires d'un conduit (11) fixe ou mobile raccordé à chacun des conduits (5).5 °) spraying device according to claim 4 characterized in that the nozzles (10) orientable are integral with a conduit (11) fixed or movable connected to each of the conduits (5). 6°) Dispositif de pulvérisation selon la revendication 2 caractérisé en ce que lors du positionnement des rampes de pulvérisation (13) selon le sens transversal du tapis (3) l'extrémité de l'ossature (1) de chacune desdites rampes est maintenue et immobilisée à la hauteur choisie sur un montant (12) placé de l'autre côté du tapis (3), lors de la non utilisation d'une rampe (13), l'ossature est placée parallèlement au tapis (3), son extrémité opposée au montant (2) reposant sur un montant (16).6 °) spraying device according to claim 2 characterized in that during the positioning of the spraying booms (13) in the transverse direction of the belt (3) the end of the framework (1) of each of said booms is maintained and immobilized at the chosen height on an upright (12) placed from the 'other side of the carpet (3), when not using a ramp (13), the frame is placed parallel to the carpet (3), its end opposite the upright (2) resting on an upright (16). 7°) Dispositif de pulvérisation selon la revendication 2 caractérisé en ce qu'une ou plusieurs séries de rampes (13) sont supportées par une ossature commune (15) pivotante, réglable en hauteur et mobile selon le sens longitudinal du tapis (3), présentant les mêmes caractéristiques que l'ossature (1).7 °) spraying device according to claim 2 characterized in that one or more series of booms (13) are supported by a common frame (15) pivoting, adjustable in height and movable in the longitudinal direction of the belt (3), having the same characteristics as the framework (1). 8°) Dispositif de pulvérisation selon la revendication 2 caractérisé en ce que les rampes (13) sont réparties à la demande le long de la table d'égouttage de manière à optimiser la saturation dans l'épaisseur de la feuille par couches successives de produit au fur et à mesure de la modification de sa siccité et des conditions de pénétration spécifiques des granules d'amidon dans ladite épaisseur de ladite feuille de papier, lesdites rampes (13) étant disposées à la demande selon un écartement régulier ou irrégulier.8 °) spraying device according to claim 2 characterized in that the ramps (13) are distributed on demand along the drip table so as to optimize the saturation in the thickness of the sheet by successive layers of product as the dryness changes and the specific penetration conditions of the starch granules in said thickness of said sheet of paper, said ramps (13) being arranged on demand at a regular or irregular spacing.
EP19880450039 1987-11-04 1988-12-15 Process and apparatus for continuously spraying adjuvants on porous webs during their movement Withdrawn EP0373276A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8715465A FR2622479B1 (en) 1987-11-04 1987-11-04 PROCESS AND DEVICE FOR CONTINUOUSLY SPRAYING ADJUVANTS ON PERMEABLE BAND PRODUCTS DURING THEIR SCROLLING

Publications (1)

Publication Number Publication Date
EP0373276A1 true EP0373276A1 (en) 1990-06-20

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Application Number Title Priority Date Filing Date
EP19880450039 Withdrawn EP0373276A1 (en) 1987-11-04 1988-12-15 Process and apparatus for continuously spraying adjuvants on porous webs during their movement

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EP (1) EP0373276A1 (en)
FR (1) FR2622479B1 (en)

Cited By (7)

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EP0725855B1 (en) * 1993-10-28 1997-09-17 Kobs Kroyer, Ingelise Modified latex
EP0881330A3 (en) * 1997-05-27 1999-10-13 Voith Sulzer Papiermaschinen Gesellschaft mbH Process and apparatus for applying a fluid or pasty material onto a moving web
DE19945580A1 (en) * 1999-09-23 2001-04-05 Stora Enso Publication Paper A Coated, optically lightened printing paper and process for its production
WO2002099191A1 (en) * 2001-06-06 2002-12-12 Kemira Chemicals Oy Method for manufacturing a multilayered pulp product comprising a charge between layers
WO2003012201A1 (en) * 2001-08-03 2003-02-13 Corenso United Oy Ltd Method and apparatus for the dosage of binding agent
WO2004096566A1 (en) 2003-04-30 2004-11-11 Basf Aktiengesellschaft Method for improving printability on paper or paper products with the aid of ink-jet printing method
CN112501945A (en) * 2020-11-03 2021-03-16 汇胜集团股份有限公司 A spray starch mobile device for production of paper tube body paper

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725855B1 (en) * 1993-10-28 1997-09-17 Kobs Kroyer, Ingelise Modified latex
EP0881330A3 (en) * 1997-05-27 1999-10-13 Voith Sulzer Papiermaschinen Gesellschaft mbH Process and apparatus for applying a fluid or pasty material onto a moving web
US6410100B1 (en) * 1997-05-27 2002-06-25 Voith Sulzer Papiermaschinen Gmbh Method of applying a coating medium on a traveling fiber material web
US6494954B1 (en) 1997-05-27 2002-12-17 Voith Sulzer Papiermaschinen Gmbh Method and apparatus for directly or indirectly applying a liquid or pasty application medium to one or both sides of a continuous surface
DE19945580A1 (en) * 1999-09-23 2001-04-05 Stora Enso Publication Paper A Coated, optically lightened printing paper and process for its production
DE19945580B4 (en) * 1999-09-23 2004-03-04 Stora Enso Publication Paper Gmbh & Co. Kg Coated, optically lightened printing paper and process for its production
DE19945580C5 (en) * 1999-09-23 2007-03-15 Stora Enso Publication Paper Gmbh & Co. Kg Coated, optically brightened printing paper and process for its production
WO2002099191A1 (en) * 2001-06-06 2002-12-12 Kemira Chemicals Oy Method for manufacturing a multilayered pulp product comprising a charge between layers
WO2003012201A1 (en) * 2001-08-03 2003-02-13 Corenso United Oy Ltd Method and apparatus for the dosage of binding agent
WO2004096566A1 (en) 2003-04-30 2004-11-11 Basf Aktiengesellschaft Method for improving printability on paper or paper products with the aid of ink-jet printing method
CN112501945A (en) * 2020-11-03 2021-03-16 汇胜集团股份有限公司 A spray starch mobile device for production of paper tube body paper

Also Published As

Publication number Publication date
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FR2622479B1 (en) 1990-07-13

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