FR2583377A1 - Metering device for discontinuous distribution of powder - Google Patents

Metering device for discontinuous distribution of powder Download PDF

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Publication number
FR2583377A1
FR2583377A1 FR8509085A FR8509085A FR2583377A1 FR 2583377 A1 FR2583377 A1 FR 2583377A1 FR 8509085 A FR8509085 A FR 8509085A FR 8509085 A FR8509085 A FR 8509085A FR 2583377 A1 FR2583377 A1 FR 2583377A1
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France
Prior art keywords
powder
drum
grooves
powder distributor
discontinuous
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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.)
Granted
Application number
FR8509085A
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French (fr)
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FR2583377B1 (en
Inventor
Jean-Paul Piron
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Colgate Palmolive Co
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Colgate Palmolive Co
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Publication date
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Priority to FR8509085A priority Critical patent/FR2583377B1/en
Publication of FR2583377A1 publication Critical patent/FR2583377A1/en
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Publication of FR2583377B1 publication Critical patent/FR2583377B1/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/00987—Apparatus or processes for manufacturing non-adhesive dressings or bandages
    • A61F13/00991—Apparatus or processes for manufacturing non-adhesive dressings or bandages for treating webs, e.g. for moisturising, coating, impregnating or applying powder
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
    • A61F13/15658—Forming continuous, e.g. composite, fibrous webs, e.g. involving the application of pulverulent material on parts thereof
    • 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
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/04—Apparatus specially adapted for applying particulate materials to surfaces the particulate material being projected, poured or allowed to flow onto the surface of the work
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
    • G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
    • G01F11/14—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates
    • G01F11/18—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates for fluent solid material

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Manufacturing & Machinery (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

The device comprises a rotary metering drum 1 and a powder-feed hopper 2, the metering drum being equipped on its surface with continuous grooves 5, 5', 5" and being driven by means permitting its step-by-step rotation, particularly by means of a motor and brake coupling assembly. Dispensing of powder into continuously passing articles.

Description

La presente invention a pour objet un doseur repartiteur discontinu de poudre, c'est-à-dire un dispositif permettant de distribuer des doses predeterminees de poudre sur des surfaces limitees en défilement continu. The present invention relates to a discontinuous distributor of powder, that is to say a device for dispensing predetermined doses of powder on limited surfaces in continuous movement.

De tels appareils sont utilises dans de nombreuses industries, notamment dans le secteur des produits d'hyglène, par exemple pour dispenser de la poudre absorbante a l'interieur des couches pour bebe. Selon l'état de la technique la plus proche connue de la Demanderesse, on utilise des tambours doseurs contenant des alveoles prevus pour recevoir la quantité de poudre que l'on désire distribuer sur des supports ou dans des articles se déplaçant par exemple sur un ruban transporteur en continu.Les principaux désavantages de ce système viennent du fait que les alvéoles ne déversent pas la poudre avec une répartition suffisamment régulière, ni dans des quantités précises, et cela d'autant plus que l'on constate une usure relativement rapide de la surface du tambour doseur en rotation continue et devant être en contact étroit avec les fentes de distribution et d'alimentation, ce qui se traduit nécessairement par une modification du volume utile des alvéoles et, en conséquence, des doses de poudre distribuées. D'autre part, il n'est pas non plus possible de changer cette dose, à moins de changer la taille des alvéoles et donc le tambour. Such devices are used in many industries, especially in the area of hyglene products, for example to dispense absorbent powder inside baby diapers. According to the closest state of the art known to the Applicant, metering drums containing cells are used to receive the quantity of powder which it is desired to distribute on supports or in articles moving for example on a tape The main disadvantages of this system come from the fact that the cells do not spill the powder with a sufficiently regular distribution, nor in precise quantities, and this all the more since we notice a relatively rapid wear of the surface of the dosing drum in continuous rotation and having to be in close contact with the distribution and supply slots, which necessarily results in a modification of the useful volume of the cells and, consequently, of the doses of powder dispensed. On the other hand, it is also not possible to change this dose, unless you change the size of the cells and therefore the drum.

On a maintenant trouvé un dispositif permettant d'éviter ces inconvénients, notamment gracie à l'abandon du système à alvéoles discrets. We have now found a device which makes it possible to avoid these drawbacks, in particular thanks to the abandonment of the discrete cell system.

L'invention a pour objet un doseur répartiteur discontinu de poudre, comprenant un tambour doseur rotatif et une trémie d'alimentation, et il est caractérisé en ce que le tambour doseur rotatif est muni, sur sa surface, de rainures continues et qu'il est entraîné par des moyens permettant sa rotation pas à pas.  The subject of the invention is a discontinuous powder distributor, comprising a rotary dosing drum and a feed hopper, and it is characterized in that the rotary dosing drum is provided, on its surface, with continuous grooves and that it is driven by means allowing its rotation step by step.

Selon une caractéristique importante, les moyens d'entraînement en rotation pas à pas du tambour sont cons titués par un ensemble moteur et embrayage-frein. Cet embrayage-frein est du type à action très rapide et permet d'interrompre la rotation du tambour par intermittence, pratiquement instantanément et de manière précise, le moteur restant en fonctionnement. Il est prëfërablement commandé par un système électronique. According to an important characteristic, the means for driving the drum step by step are constituted by a motor and clutch-brake assembly. This clutch-brake is of the very fast acting type and makes it possible to interrupt the rotation of the drum intermittently, almost instantaneously and precisely, the engine remaining in operation. It is preferably controlled by an electronic system.

De tels embrayages-freins sont connus, par exemple, sous la dénomination indexeur-positionneur programmable et comprennent généralement une unité mécanique à commande électropneumatique reliée à un arbre d'entraînement, et une unité de contrôle électronique commandant l'unité mécanique tout en contrôlant la position de l'arbre. L'indexeur-positionneur pilote la position de l'arbre selon les séquences nécessaires à la bonne marche de la machine (départ, stop, synchronisation, et rotation pas à pas). Such brake clutches are known, for example, under the designation programmable indexer-positioner and generally comprise a mechanical unit with electropneumatic control connected to a drive shaft, and an electronic control unit controlling the mechanical unit while controlling the tree position. The indexer-positioner controls the position of the shaft according to the sequences necessary for the smooth running of the machine (start, stop, synchronization, and rotation step by step).

La rotation pas à pas s'effectue de la manière suivante.The rotation step by step is carried out as follows.

Au début d'une période tl (6 à 15 millisecondes), un si gnal de départ est fourni par l'unité de contrôle, ce qui a pour conséquence de mettre la chambre de freinage de l'unité mécanique à l'atmosphère. Au même moment, le vide est établi dans la chambre d'embrayage. Le couple de friction s'accroît de 0 à 100% en moins de 1 milliseconde et l'arbre - et sa charge utile - sont accélérés jusqu'à atteindre la vitesse du disque moteur pendant une période t ide l'ordre de 25 ms). Durant la période t3 (choisie) l'unité mécanique transmet la puissance motrice à l'arbre.At the start of a period tl (6 to 15 milliseconds), a starting signal is supplied by the control unit, which has the effect of bringing the brake chamber of the mechanical unit to the atmosphere. At the same time, a vacuum is established in the clutch chamber. The friction torque increases from 0 to 100% in less than 1 millisecond and the shaft - and its payload - are accelerated until reaching the speed of the motor disc for a period of about 25 ms) . During the period t3 (chosen) the mechanical unit transmits the driving power to the shaft.

Au début de la période t4 (6 à 15 ms), un signal électronique fourni par un générateur d'impulsions, ou par l'unité de contrôle elle-même en cas de comptage interne, le disque d'embrayage est libéré du disque moteur et le disque de freinage est accouplé au disque de friction solidaire du carter. Le couple de freinage passe de 0 à 100% en moins de-l milliseconde et la décélération s'opère pendant une période t5 (env. 25 ms) jusqu'à ce que l'arbre soit arrêté. Au début de la période t61 l'arbre est maintenu en position arrêtée et à la fin de t6 (choisie) le cycle peut recommencer.At the start of period t4 (6 to 15 ms), an electronic signal supplied by a pulse generator, or by the control unit itself in the event of internal counting, the clutch disc is released from the engine disc and the brake disc is coupled to the friction disc integral with the casing. The braking torque goes from 0 to 100% in less than 1 millisecond and deceleration takes place for a period t5 (approx. 25 ms) until the shaft is stopped. At the start of period t61 the tree is kept in the stopped position and at the end of t6 (selected) the cycle can start again.

Le moteur d'entraînement est à vitesse variable, par exemple à courant continu asservi à la vitesse de la ligne de production sur laquelle le tambour doseur est installé. The drive motor is variable speed, for example direct current controlled by the speed of the production line on which the metering drum is installed.

Le tambour doseur est un cylindre muni de rainures continues recueillant et entraînant la poudre de la trémie, puis la déversant dans les articles en défilement sous le tambour. La rotation intermittente du tambour améliore le remplissage des rainures. De plus, elle autorise un montage mécanique sans pièce d'usure. La répartition de la poudre est ajustée par la forme et la disposition des rainures sur le tambour. The dosing drum is a cylinder provided with continuous grooves collecting and entraining the powder from the hopper, then pouring it into the articles running under the drum. The intermittent rotation of the drum improves the filling of the grooves. In addition, it allows mechanical assembly without wearing parts. The distribution of the powder is adjusted by the shape and the arrangement of the grooves on the drum.

Selon une variante, les rainures (par exemple cannelures ou gravures) sont disposées dans une direction axiale du tambour et, de préférence, elles sont complétées par des rainures circonférentielles, mais d'autres dispositions sont possibles selon la répartition de poudre désirée, sans sortir du cadre de l'invention. De même la largeur et la profondeur des rainures dépendent de la quantité de poudre que l'on désire déverser et de sa granulométrie. According to a variant, the grooves (for example grooves or etchings) are arranged in an axial direction of the drum and, preferably, they are supplemented by circumferential grooves, but other arrangements are possible according to the desired distribution of powder, without leaving of the scope of the invention. Likewise, the width and the depth of the grooves depend on the quantity of powder which it is desired to pour and on its granulometry.

Selon une autre variante, le dispositif de l'invention peut être complété par un système de dépoussiérage par aspiration disposé, par exemple sous le rapport dans le cas ou ce dernier, ainsi que le dispositif transporteur sont perméables à l'air. Le dispositif transporteur peut être constitué par un ruban transporteur ou bien un rouleau perforé, ou encore une combinaison de ces deux systèmes. According to another variant, the device of the invention can be completed by a vacuum dedusting system arranged, for example in the report in the case where the latter, as well as the conveyor device are permeable to air. The conveyor device can be constituted by a conveyor tape or else a perforated roller, or even a combination of these two systems.

D'autres caractéristiques et avantages de l'invention appa raieront à la lecture de la description suivante 'un exemple de réalisation, faite avec référence aux dessins annexés sur lesquels
-# la fig. l est une vue de face d'une partie du dispositif selon l'invention, comprenant un tambour doseur et une trémie, ainsi qu'un ruban transporteur;
- la fig. 2 est une vue de coté en coupe 2-2 de la fig. 1;
- la fig. 3 est une vue de face du doseur répartiteur discontinu de poudre selon l'invention et d'un ruban transporteur; et
- la fig. 4 est une vue en perspective d'un support avec les dépôts de poudre obtenus avec le dispositif selon l'invention.Other characteristics and advantages of the invention will appear on reading the following description of an exemplary embodiment, made with reference to the accompanying drawings in which
- # fig. l is a front view of a part of the device according to the invention, comprising a dosing drum and a hopper, as well as a conveyor belt;
- fig. 2 is a side view in section 2-2 of FIG. 1;
- fig. 3 is a front view of the discontinuous powder distributor dispenser according to the invention and of a conveyor belt; and
- fig. 4 is a perspective view of a support with the powder deposits obtained with the device according to the invention.

Sur la fig. 1 est représenté un tambour doseur 1 rotatif recevant la poudre contenue dans une trémie 2 afin de la déposer et répartir, de manière discontinue, sur des surfaces déterminées d'un support 3 disposé sur un ruban transporteur 4. Le support 3 consiste, par exemple, en une matière (pâte de bois défibrée, ouate de cellulose, tissu non tissé, ...) pour couches , sur lequel on désire déposer des doses volumétriques précises de poudre absorbante réparties sur des surfaces déterminées 8 (fig.4).  In fig. 1 shows a rotary dosing drum 1 receiving the powder contained in a hopper 2 in order to deposit it and distribute it, discontinuously, on determined surfaces of a support 3 arranged on a conveyor belt 4. The support 3 consists, for example , in a material (defibred wood pulp, cellulose wadding, non-woven fabric, etc.) for diapers, on which it is desired to deposit precise volumetric doses of absorbent powder distributed over specific surfaces 8 (fig. 4).

Le tambour doseur 1 est un cylindre (100 mm de diamètre) monté de façon à ce que sa rotation entraîne la poudre hors de la trémie 2, et dont la partie utile (en contact avec la poudre) comporte des rainures continues gravées. Ces rainures gravées sont sous forme de cannelures 5, 5', 5", de 1,2 mm de profondeur et de 2 mm de largeur, disposées axialement (5, 5"), ou circonférentiellement (5') sur le tambour 1. Les dimensions des cannelures peuvent être différentes selon la quantité ou la répartition de poudre que l'on désire déposer : selon un mode de réalisation, on a représenté sur la fig. 1 quelques cannelures axiales 5",de longueur inférieure à la longueur utile du tambour 1. La pièce 9 sur la fig. 2 est montée avec jeu. A l'arrêt elle assure l'étanchéité inférieure de la trémie 2 et, en fonctionnement, elle ne s'use que très peu car les grains de poudre ne sont pas écrasés.  The dosing drum 1 is a cylinder (100 mm in diameter) mounted so that its rotation drives the powder out of the hopper 2, and the useful part of which (in contact with the powder) has engraved continuous grooves. These engraved grooves are in the form of grooves 5, 5 ', 5 ", 1.2 mm deep and 2 mm wide, arranged axially (5, 5"), or circumferentially (5') on the drum 1. The dimensions of the grooves may be different depending on the quantity or the distribution of powder that it is desired to deposit: according to one embodiment, there is shown in FIG. 1 some axial splines 5 ", of length less than the useful length of the drum 1. The part 9 in FIG. 2 is mounted with play. When stopped, it ensures the lower sealing of the hopper 2 and, in operation, it only wears very little because the powder grains are not crushed.

Sur la fig. 3 est représenté l'ensemble de l'installation, notamment les moyens d'entraînement du tambour doseur 1 constitués par un embrayage-frein 6 mû par un moteur 7 à courant continu et à vitesse variable. L'embrayage-frein 6 est d'un type à action très rapide (par exemple "SRA 23" de la firme Danfoss ayant un temps de réponse en accouplement et freinage de 9 ms et un temps d'accélération et de décélération maximal de 25 ms), et il est relié à une unité de commande électronique (par exemple du type "SRB" de la même firme) contrôlant de manière précise le positionnement de l'arbre d'entraînement du tambour 1 selon la position du support 3 défilant avec le ruban transporteur 4. In fig. 3 shows the entire installation, in particular the drive means of the metering drum 1 constituted by a clutch-brake 6 driven by a motor 7 with direct current and variable speed. The clutch-brake 6 is of a very fast acting type (for example "SRA 23" from the firm Danfoss having a coupling and braking response time of 9 ms and a maximum acceleration and deceleration time of 25 ms), and it is connected to an electronic control unit (for example of the "SRB" type from the same company) precisely controlling the positioning of the drive shaft of the drum 1 according to the position of the support 3 scrolling with the conveyor belt 4.

Le fonctionnement du dispositif est le suivant. Le tambour doseur 1 est entraîné en rotation par le moteur 7, par l'intermédiaire de l'embrayage-frein 6 commandé électroniquement de manière à interrompre la rotation du tambour 1 de façon intermittente, le moteur restant en fonctionnement. La quantité de poudre absorbante est donc déposée sur le support 3 entre deux interruptions de la rotation, et elle est proportionnelle à la vitesse de rotation du tambour doseur 1. Le système de commande électronique de l'embrayage-frein 6 synchronise le fonctionnement du tambour doseur 1 avec la vitesse de défilement du ruban transporteur 4. Il permet de déposer la poudre à l'emplacement souhaité des couches servant de support 3 et d'ajuster la longueur du dépôt de poudre 8 (fig. 4) pour chaque couche, c'est-à-dire le poids de poudre par surface de dépôt choisie. A titre d'exemple, le tambour tournant à 40 t/mn avec des périodes de rotation de 2/3 de 0,2 s et des périodes d'arrêt de 1/3 de 0,2 s, on réalise le dépôt de 300 doses de poudre/mn, la longueur de chaque dépôt étant de 2/3 de la longueur totale d'un article.  The operation of the device is as follows. The metering drum 1 is driven in rotation by the motor 7, by means of the clutch-brake 6 electronically controlled so as to interrupt the rotation of the drum 1 intermittently, the engine remaining in operation. The quantity of absorbent powder is therefore deposited on the support 3 between two interruptions of the rotation, and it is proportional to the speed of rotation of the metering drum 1. The electronic control system of the brake-clutch 6 synchronizes the operation of the drum dispenser 1 with the speed of travel of the conveyor belt 4. It makes it possible to deposit the powder at the desired location of the layers serving as support 3 and to adjust the length of the powder deposit 8 (fig. 4) for each layer, c that is to say the weight of powder per chosen deposition surface. For example, the drum rotating at 40 rpm with rotation periods of 2/3 of 0.2 s and stop periods of 1/3 of 0.2 s, the deposit of 300 doses of powder / min, the length of each deposit being 2/3 of the total length of an article.

Le tambour doseur discontinu de poudre selon l'invention permet d'ajuster de manière précise la surface de dépôt de la poudre et la quantité de poudre distribuée. The discontinuous powder metering drum according to the invention makes it possible to precisely adjust the surface area for depositing the powder and the quantity of powder dispensed.

On peut ainsi réaliser des dosages volumétriques avec des cadences pouvant dépasser 300 par minute . De plus, les temps d'arrêt du tambour doseur permettent d'une part un bon remplissage des cannelures, même à cadence élevée, donc une répartition régulière sur la surface de dépôt et, d'autre part, un montage mécanique sans pièces d'usure. It is thus possible to carry out volumetric dosages with rates which can exceed 300 per minute. In addition, the downtimes of the metering drum allow on the one hand a good filling of the grooves, even at high speed, therefore a regular distribution on the deposit surface and, on the other hand, a mechanical assembly without parts wear.

Claims (6)

- REVENDICATIONS- CLAIMS 1 - Doseur répartiteur discontinu de poudre, comprenant un tambour doseur (1) rotatif et une trémie (2) d'alimentation, caractérisé en ce que le tambour doseur (1) rotatif est muni, sur sa surface, de rainures (5, 5', 5") continues, et qu'il est entraîne par des moyens permettant sa rotation pas à pas. 1 - Discontinuous powder distributor, comprising a rotary dosing drum (1) and a feed hopper (2), characterized in that the rotary dosing drum (1) is provided, on its surface, with grooves (5, 5 ', 5 ") continuous, and that it is driven by means allowing its rotation step by step. 2 - Doseur répartiteur discontinu de poudre selon la revendication 1, caractérisé en ce que les moyens d'entraînement en rotation pas à pas du tambour (1) sont constitués par un ensemble moteur (7) et embrayage-f#rein (6). 2 - Discontinuous powder distributor distributor according to claim 1, characterized in that the drive means in step-by-step rotation of the drum (1) are constituted by a motor assembly (7) and clutch-f # kidney (6). 3 - Doseur répartiteur discontinu de poudre selon la revendication 2, caractérisé en ce que l'embrayagefrein est commandé par un système électronique. 3 - Discontinuous powder distributor metering device according to claim 2, characterized in that the brake clutch is controlled by an electronic system. 4 - Doseur répartiteur discontinu de poudre selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les rainures (5, 5") sont disposées dans une direction axiale du tambour (1).  4 - Discontinuous powder distributor dispenser according to any one of claims 1 to 3, characterized in that the grooves (5, 5 ") are arranged in an axial direction of the drum (1). 5 - Doseur répartiteur discontinu de poudre selon la revendication 4, caractérisé en ce que les rainures axiales (5, 5") sont complétées par des rainures circonférentielles (5'). 5 - Discontinuous powder distributor dispenser according to claim 4, characterized in that the axial grooves (5, 5 ") are supplemented by circumferential grooves (5 '). 6 - Doseur répartiteur discontinu de poudre selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comprend un système de dépoussiérage par aspiration disposé sous le dispositif transportant le support, ceux-ci étant perméables à l'air.  6 - Discontinuous powder distributor dispenser according to any one of claims 1 to 5, characterized in that it comprises a vacuum dedusting system disposed under the device transporting the support, these being permeable to air.
FR8509085A 1985-06-14 1985-06-14 DISCONTINUOUS DISPENSER OF POWDER Expired FR2583377B1 (en)

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FR2583377B1 FR2583377B1 (en) 1987-12-24

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US6250513B1 (en) * 1998-08-10 2001-06-26 Weitmann & Konrad Gmbh & Co. Kg Device for metering a powder
EP1621167A2 (en) 2004-07-28 2006-02-01 The Procter and Gamble Company Process for producing sandwich structures with particulate material pattern
DE202007019026U1 (en) 2007-01-09 2010-03-11 Bach, Horst Storage container with integrated portioning device
US7744713B2 (en) 2004-07-28 2010-06-29 The Procter & Gamble Company Process for producing absorbent core structures
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