FR2703925A1 - Filter element, process for its manufacture, its application to a bottle end-piece, and process for the manufacture of a bottle end-piece - Google Patents

Filter element, process for its manufacture, its application to a bottle end-piece, and process for the manufacture of a bottle end-piece Download PDF

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Publication number
FR2703925A1
FR2703925A1 FR9304536A FR9304536A FR2703925A1 FR 2703925 A1 FR2703925 A1 FR 2703925A1 FR 9304536 A FR9304536 A FR 9304536A FR 9304536 A FR9304536 A FR 9304536A FR 2703925 A1 FR2703925 A1 FR 2703925A1
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France
Prior art keywords
filter element
periphery
piece
membranes
nozzle
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Granted
Application number
FR9304536A
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French (fr)
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FR2703925B1 (en
Inventor
Gregoire Jean-Francois
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Kerplas SNC
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Kerplas SNC
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Priority to FR9304536A priority Critical patent/FR2703925B1/en
Publication of FR2703925A1 publication Critical patent/FR2703925A1/en
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Publication of FR2703925B1 publication Critical patent/FR2703925B1/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/081—Manufacturing thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7441—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc for making welds and cuts of other than simple rectilinear form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5342—Joining single elements to open ends of tubular or hollow articles or to the ends of bars a substantially flat extra element being placed between and clamped by the joined single elements and the end of said tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0063—Cutting longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B29L2009/001—Layered products the layers being loose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2022/00—Hollow articles
    • B29L2022/005—Hollow articles having dividing walls, e.g. additional elements placed between object parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/14—Filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/755—Membranes, diaphragms

Abstract

This filter element consists of a stack of microporous membranes made of plastic (16) which are welded together at their periphery. It can be incorporated into a bottle end-piece by clamping its periphery between two end-piece components (18, 19) welded together around and at a distance from the clamping region.

Description

La présente invention est relative aux embouts de flacon incorporant un élément filtrant. The present invention relates to vial tips incorporating a filter element.

I1 a déjà été proposé de découper un disque de matière microporeuse et de l'incorporer dans un embout de flacon. Cependant, certaines applications nécessitent l'utilisation de plusieurs disques superposés, et la technique classique ne permet pas leur incorporation commode dans un embout. I1 has already been proposed to cut a disc of microporous material and incorporate it into a bottle tip. However, some applications require the use of several superimposed discs, and the conventional technique does not allow their convenient incorporation into a nozzle.

L'invention a pour but de permettre la réalisation à bas prix d'embouts de flacon incorporant plusieurs disques filtrants superposés. The object of the invention is to enable low-cost bottle caps incorporating several superimposed filter discs to be produced.

A cet effet, l'invention a pour premier objet un élément filtrant pour embout de flacon, constitué d'un empilage de membranes microporeuses en matière plastique soudées entre elles à leur périphérie. To this end, the invention firstly has a filter element for a bottle tip, consisting of a stack of microporous plastic membranes welded together at their periphery.

Suivant d'autres caractéristiques
- au moins certaines membranes sont revêtues d'un produit actif;
- toutes les membranes sont identiques;
- les membranes sont en matière thermoplastique, notamment en polyamide.According to other characteristics
- at least some membranes are coated with an active product;
- all the membranes are identical;
- the membranes are made of thermoplastic material, in particular polyamide.

L'invention a également pour objet un procédé particulièrement commode et économique de fabrication d'un tel élément filtrant. Suivant ce procédé, on empile une série de bandes de matière plastique au droit d'une enclume, et on pince la série de bandes entre cette enclume et une sonotrode à ultra-sons, de façon à réaliser en une seule opération le soudage des bandes suivant une ligne fermée et le découpage d'un élément filtrant ayant la forme de cette ligne. The invention also relates to a particularly convenient and economical method of manufacturing such a filter element. According to this method, a series of strips of plastic material are stacked in line with an anvil, and the series of strips is clamped between this anvil and an ultrasonic horn, so as to weld the strips in a single operation along a closed line and the cutting of a filter element having the shape of this line.

L'invention a encore pour objet un embout de flacon comprenant un élément filtrant tel que défini cidessus, incorporé dans l'embout.  The invention also relates to a bottle tip comprising a filter element as defined above, incorporated in the tip.

Suivant un mode de réalisation de cette embout, la périphérie de l'élément filtrant est pincée entre deux pièces de l'embout, ces pièces étant soudées l'une à l'autre autour et à distance de cette périphérie. According to one embodiment of this nozzle, the periphery of the filter element is pinched between two parts of the nozzle, these parts being welded to one another around and at a distance from this periphery.

L'invention a pour autre objet un procédé de fabrication d'un embout de flacon qui convient particulièrement bien pour l'incorporation d'un élément filtrant tel que défini plus haut. Suivant ce procédé
- on pose la périphérie de l'élément filtrant sur une surface annulaire d'appui de forme correspondante prévue sur une première pièce de l'embout, cette surface étant entourée d'une surface de soudage;
- on dispose par-dessus l'élément filtrant une seconde pièce de 1 embout, en forme de coupelle inversée, dont la périphérie vient s'appliquer sur ladite surface de soudage, un espace libre subsistant entre cette deuxième pièce et l'élément filtrant; et
- on soude, notamment par ultra-sons, la périphérie de la seconde pièce sur la surface de soudage, jusqu a pincement de la périphérie de l'élément filtrant sur ladite surface d'appui.Another subject of the invention is a method for manufacturing a bottle tip which is particularly suitable for incorporating a filter element as defined above. According to this process
- The periphery of the filter element is placed on an annular bearing surface of corresponding shape provided on a first piece of the nozzle, this surface being surrounded by a welding surface;
- There is above the filter element a second piece of 1 tip, in the form of an inverted cup, the periphery of which is applied to said welding surface, a free space remaining between this second piece and the filter element; and
- The periphery of the second part is welded, in particular by ultrasound, to the welding surface, until the periphery of the filter element is pinched on said bearing surface.

Un exemple de réalisation de l'invention va maintenant être décrit en regard des dessins annexés, sur lesquels
- les Figures 1 à 4 illustrent schématiquement quatre étapes successives de la fabrication d'un élément filtrant suivant l'invention;
- la Figure 5 représente l'élément filtrant ainsi obtenu;
- la Figure 6 représente en coupe diamétrale la zone périphérique de cet élément filtrant;
- la Figure 7 est une demi-vue éclatée en coupe diamétrale des trois pièces destinées à former un embout filtrant conforme à l'invention; et
- les Figures 8 à 10 sont des demi-vues en coupe diamétrale illustrant trois étapes successives de la fabrication de cet embout.An exemplary embodiment of the invention will now be described with reference to the accompanying drawings, in which
- Figures 1 to 4 schematically illustrate four successive stages in the manufacture of a filter element according to the invention;
- Figure 5 shows the filter element thus obtained;
- Figure 6 shows in diametral section the peripheral area of this filter element;
- Figure 7 is an exploded half-view in diametral section of the three parts intended to form a filter nozzle according to the invention; and
- Figures 8 to 10 are half-views in diametral section illustrating three successive stages of the manufacture of this nozzle.

Pour réaliser des éléments filtrants tel que celui représenté aux Figures 5 et 6, on part (Figure 1) d'une feuille 1 d'une matière plastique appropriée, qui se présente sous la forme d'un rouleau 2 porté par un noyau 3. La matière plastique est microporeuse, notamment en polyamide, d'une épaisseur typiquement comprise entre 0,1 et 0,2 mm, avec des pores ayant typiquement un diamètre de l'ordre de 0,4 à 0,5 pm. Cette matière plastique est revêtue d'un produit actif approprié pour l'utilisation envisagée, par exemple capable d'absorber un agent conservateur mélangé à un produit de traitement ophtalmologique. To produce filter elements such as that shown in Figures 5 and 6, we start (Figure 1) from a sheet 1 of a suitable plastic, which is in the form of a roll 2 carried by a core 3. The plastic material is microporous, in particular made of polyamide, with a thickness typically between 0.1 and 0.2 mm, with pores typically having a diameter of the order of 0.4 to 0.5 μm. This plastic material is coated with an active product suitable for the intended use, for example capable of absorbing a preservative mixed with an ophthalmological treatment product.

La feuille 1 est déroulée suivant une direction D et est découpée en bandes 4 ayant toutes la même largeur, par un ensemble de disques de coupe parallèles 5 portés par un arbre rotatif commun 6. Si nécessaire, on peut prévoir un arbre auxiliaire parallèle à l'arbre 6 et disposé légèrement en aval de ce dernier, cet arbre auxiliaire portant autant de disques 7 contrerotatifs de contre-coupe. Le nombre de bandes 4 est égal au nombre de membranes individuelles destinées à former chaque élément filtrant. Ce nombre est typiquement compris entre 5 et 15. The sheet 1 is unwound in a direction D and is cut into strips 4 all having the same width, by a set of parallel cutting discs 5 carried by a common rotary shaft 6. If necessary, an auxiliary shaft parallel to the 'shaft 6 and disposed slightly downstream of the latter, this auxiliary shaft carrying as many counter-rotating counter-cutting discs 7. The number of bands 4 is equal to the number of individual membranes intended to form each filter element. This number is typically between 5 and 15.

Grâce à des jeux de galets de guidage tels que les galets 8 de la Figure 1, les bandes 4 sont amenés à la disposition superposée représentée à droite de la
Figure 2, pour former un empilage de bandes 8.Thanks to sets of guide rollers such as the rollers 8 of FIG. 1, the strips 4 are brought to the superimposed arrangement represented on the right of the
Figure 2, to form a stack of strips 8.

Puis (Figure 3), l'empilage 8 passe juste audessus de l'arête supérieure 9, de forme circulaire, d'une enclume 10 de forme annulaire, fixée sur un socle rigide 11. L'arête 9 est formée par l'intersection de deux surfaces coniques divergentes vers le bas, à savoir une surface intérieure 12 légèrement divergente et une surface extérieure 13 nettement plus divergente. Then (Figure 3), the stack 8 passes just above the upper edge 9, of circular shape, of an anvil 10 of annular shape, fixed on a rigid base 11. The edge 9 is formed by the intersection two conical surfaces diverging downward, namely an inner surface 12 slightly divergent and an outer surface 13 significantly more divergent.

Puis un poinçon ou sonotrode cylindrique 14, coaxial à l'enclume 10 et animé d'un petit mouvement vertical à fréquence ultrasonore, symbolisé par la flèche f de la Figure 4, est descendu vers l'enclume et pince une zone circulaire de l'empilage 8 sur l'arête 9. Ceci a pour effet simultané d'une part de souder ensemble toutes les bandes 4 le long de l'arête 9, et d'autre part de découper empilage suivant cette ligne circulaire. Then a cylindrical punch or horn 14, coaxial with the anvil 10 and animated by a small vertical movement at ultrasonic frequency, symbolized by the arrow f in FIG. 4, is lowered towards the anvil and clamps a circular zone of the stacking 8 on the edge 9. This has the simultaneous effect on the one hand of welding together all the strips 4 along the edge 9, and on the other hand of cutting stacking along this circular line.

Grâce à la dépouille vers le bas de la surface intérieure 12, le "gâteau" ou élément filtrant ainsi formé tombe librement dans l'enclume, suivant la flèche F de la
Figure 4. Les gâteaux peuvent ensuite être évacués par un dispositif transportelr non représenté.By virtue of the downward draft of the interior surface 12, the “cake” or filter element thus formed falls freely in the anvil, according to the arrow F of the
Figure 4. The cakes can then be removed by a transport device not shown.

On obtient ainsi un élément filtrant 15 tel que représenté sur les Figures 5 et 6, facilement manipulable par une ventouse. Cet élément 15 est constitué d'un empilage de membranes élémentaires circulaires 16 soudées ensemble à leur périphérie, suivant une soudure circulaire 17. Comme représenté, on constate que l'élément 15 est, en pratique, légèrement bombé dans sa partie courante, notamment vers le bas. Cette asymétrie peut être mise à profit pour prévoir d'un côté ou de l'autre de l'élément 15 une ou plusieurs membranes différentes des autres, auquel cas ce ou ces membranes proviennent d'une bobine différente du rouleau 2. This gives a filter element 15 as shown in Figures 5 and 6, easily manipulated by a suction cup. This element 15 consists of a stack of circular elementary membranes 16 welded together at their periphery, in a circular weld 17. As shown, it can be seen that the element 15 is, in practice, slightly curved in its main part, in particular towards the bottom. This asymmetry can be taken advantage of to provide on one side or the other of the element 15 one or more membranes different from the others, in which case this or these membranes come from a different coil of the roller 2.

Bien entendu, plusieurs éléments 15 peuvent être formés simultanément dans la largeur de l'empilage 8, au moyen d'autant de dispositifs du type enclume 10sonotrode 14. Of course, several elements 15 can be formed simultaneously in the width of the stack 8, by means of as many devices of the anvil type 10 as isotrode 14.

On peut utiliser l'élément filtrant 15 pour constituer un embout de flacon à élément filtrant incorporé de la manière illustrée aux Figures 7 à 10. The filter element 15 can be used to form a vial tip with a filter element incorporated as illustrated in FIGS. 7 to 10.

L'embout comprend deux pièces en matière plastique, à savoir une pièce inférieure 18 et une pièce supérieure 19. The endpiece comprises two plastic parts, namely a lower part 18 and an upper part 19.

La pièce 18 comporte à son extrémité supérieure une surface annulaire d'appui 20 horizontale, sensiblement de même diamètre extérieur que l'élément 15, bordée par une surface cylindrique descendante 21 d'oû part vers l'extérieur une surface annulaire de soudage 22 également horizontale. Un conduit central 23 ouvert vers le bas et vers le haut part du bord intérieur de la surface 20. The part 18 has at its upper end a horizontal annular bearing surface 20, substantially of the same outside diameter as the element 15, bordered by a descending cylindrical surface 21 from where outwards an annular welding surface 22 also horizontal. A central duct 23 open downwards and upwards leaves from the inner edge of the surface 20.

La pièce 19 a une forme de coupelle inversée, avec une jupe périphérique 24 de même diamètre extérieur que la surface 22, prolongée vers le haut par un conduit de sortie 25 qui se termine par un trou de déversement goutte à goutte 26 de diamètre approprié. La jupe 24 se termine vers le bas par un biseau 27. The piece 19 has an inverted cup shape, with a peripheral skirt 24 of the same outside diameter as the surface 22, extended upwards by an outlet duct 25 which ends in a drip hole 26 of suitable diameter. The skirt 24 ends down at the bottom with a bevel 27.

Pour réaliser l'embout, on pose la périphérie 17 de l'élément filtrant 15 sur la surface 20 (Figure 8). To make the nozzle, the periphery 17 of the filter element 15 is placed on the surface 20 (Figure 8).

Puis (Figure 9), on pose la jupe 24 sur la surface 22, ce qui laisse subsister un jeu vertical i au-dessus de la périphérie de l'élément 15.Then (FIG. 9), the skirt 24 is placed on the surface 22, which leaves a vertical clearance i above the periphery of the element 15.

Enfin, on soude par ultrasons le bord de la jupe 24 sur la surface 22. Ceci fait fondre le biseau 27 jusqu'à ce que la périphérie de l'élément 15 soit pincée, sur une hauteur suffisante pour garantir l'étanchéité, entre le fond horizontal 28 de la coupelle 19 et la surface d'appui 20. Finally, the edge of the skirt 24 is ultrasonically welded to the surface 22. This melts the bevel 27 until the periphery of the element 15 is pinched, over a height sufficient to guarantee sealing, between the horizontal bottom 28 of the cup 19 and the bearing surface 20.

On obtient ainsi des embouts 29 à élément filtrant incorporé pouvant être produits en grand nombre de façon très économique et assurant une étanchéité fiable. Nozzles 29 are thus obtained with incorporated filter element which can be produced in large numbers very economically and ensuring reliable sealing.

De tels embouts peuvent être en particulier utilisés sur des flacons contenant un produit mélangé à un agent conservateur. Cet agent est alors absorbé par le produit actif revêtant les membranes 16.  Such tips can be used in particular on bottles containing a product mixed with a preservative. This agent is then absorbed by the active product coating the membranes 16.

Claims (8)

REVENDICATIONS 1 - Elément filtrant (15) pour embout de flacon (29), constitué d'un empilage de membranes microporeuses en matière plastique (16) soudées entre elles à leur périphérie (17). 1 - Filter element (15) for vial tip (29), consisting of a stack of microporous plastic membranes (16) welded together at their periphery (17). 2 - Elément filtrant suivant la revendication 1, caractérisé en ce qu'au moins certaines membranes (16) sont revêtues d'un produit actif. 2 - Filter element according to claim 1, characterized in that at least some membranes (16) are coated with an active product. 3 - Elément filtrant suivant la revendication 1 ou 2, caractérisé en ce que toutes les membranes (16) sont identiques. 3 - Filter element according to claim 1 or 2, characterized in that all the membranes (16) are identical. 4 - Elément filtrant suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que les membranes (16) sont en matière thermoplastique, notamment en polyamide. 4 - Filter element according to any one of claims 1 to 3, characterized in that the membranes (16) are made of thermoplastic material, in particular polyamide. 5 - Procédé de fabrication d'un élément filtrant suivant l'une quelconque des revendications 1 à 4, caractérisé en qu'on empile une série de bandes de matière plastique (4) au droit d'une enclume (10), et on pince la série de bandes entre cette enclume et une sonotrode à ultra-sons (14), de façon à réaliser en une seule opération le soudage des bandes suivant une ligne fermée et le découpage d'un élément filtrant (15) ayant la forme de cette ligne. 5 - A method of manufacturing a filter element according to any one of claims 1 to 4, characterized in that a series of strips of plastic material (4) are stacked in line with an anvil (10), and pinched the series of bands between this anvil and an ultrasonic sonotrode (14), so as to carry out in a single operation the welding of the bands along a closed line and the cutting of a filter element (15) having the form of this line. 6 - Embout de flacon (29) comprenant un élément filtrant (15) suivant l'une quelconque des revendications 1 à 4, incorporé dans l'embout. 6 - Bottle tip (29) comprising a filter element (15) according to any one of claims 1 to 4, incorporated in the tip. 7 - Embout suivant la revendication 6, caractérisé en ce que la périphérie (17) de l'élément filtrant (15) est pincée entre deux pièces (18, 19) de l'embout, ces pièces étant soudées l'une à l'autre autour et à distance de cette périphérie. 7 - A nozzle according to claim 6, characterized in that the periphery (17) of the filter element (15) is clamped between two parts (18, 19) of the nozzle, these parts being welded one to the other around and at a distance from this periphery. 8 - Procédé de fabrication d'un embout de flacon (29) à élément filtrant (15) incorporé, caractérisé en ce que  8 - Method for manufacturing a bottle end piece (29) with incorporated filter element (15), characterized in that - on pose la périphérie de l'élément filtrant (15) sur une surface annulaire d'appui (20) de forme correspondante prévue sur une première pièce (18) de l'embout, cette surface étant entourée d'une surface de soudage (22); - the periphery of the filter element (15) is placed on an annular bearing surface (20) of corresponding shape provided on a first part (18) of the nozzle, this surface being surrounded by a welding surface ( 22); - on dispose par-dessus l'élément filtrant (15) une seconde pièce (19) de l'embout, en forme de coupelle inversée, dont la périphérie (27) vient s'appliquer sur ladite surface de soudage (22), un espace libre (j) subsistant entre cette deuxième pièce et l'élément filtrant; et - a second piece (19) of the end piece, in the form of an inverted cup, is placed over the filter element (15), the periphery (27) of which is applied to said welding surface (22), a free space (j) remaining between this second part and the filter element; and - on soude, notamment par ultra-sons, la périphérie de la seconde pièce (19) sur la surface de soudage (22), jusqu'à pincement de la périphérie (17) de l'élément filtrant (15) sur ladite surface d'appui (20).  - the periphery of the second part (19) is welded, in particular by ultrasound, to the welding surface (22), until the periphery (17) of the filter element (15) is pinched onto said surface d 'support (20).
FR9304536A 1993-04-16 1993-04-16 Filter element, its manufacturing method, its application to a bottle tip, and method of manufacturing a bottle tip. Expired - Fee Related FR2703925B1 (en)

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FR9304536A FR2703925B1 (en) 1993-04-16 1993-04-16 Filter element, its manufacturing method, its application to a bottle tip, and method of manufacturing a bottle tip.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307426A (en) * 1995-11-23 1997-05-28 Scapa Group Plc Filter sleeve
WO2002005934A2 (en) * 2000-05-31 2002-01-24 Pall Corporation Membrane packets, methods for making membrane packets, and membrane packet assemblies
EP2508247A1 (en) * 2011-04-07 2012-10-10 New Century Membrane Technology Co., Ltd. Method and apparatus for making a filtering unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129663A1 (en) * 1983-04-30 1985-01-02 Gkss-Forschungszentrum Geesthacht Gmbh Membrane pad
US4935142A (en) * 1989-06-23 1990-06-19 Memtek Corporation Apparatus for retaining variable number of sheet membrane elements and a method for the use thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129663A1 (en) * 1983-04-30 1985-01-02 Gkss-Forschungszentrum Geesthacht Gmbh Membrane pad
US4935142A (en) * 1989-06-23 1990-06-19 Memtek Corporation Apparatus for retaining variable number of sheet membrane elements and a method for the use thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307426A (en) * 1995-11-23 1997-05-28 Scapa Group Plc Filter sleeve
WO2002005934A2 (en) * 2000-05-31 2002-01-24 Pall Corporation Membrane packets, methods for making membrane packets, and membrane packet assemblies
WO2002005934A3 (en) * 2000-05-31 2002-06-20 Pall Corp Membrane packets, methods for making membrane packets, and membrane packet assemblies
EP2508247A1 (en) * 2011-04-07 2012-10-10 New Century Membrane Technology Co., Ltd. Method and apparatus for making a filtering unit

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