EP0718191B1 - Packaging machine for ready-to-use doses of animal semen and filled package obtained from this machine - Google Patents

Packaging machine for ready-to-use doses of animal semen and filled package obtained from this machine Download PDF

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Publication number
EP0718191B1
EP0718191B1 EP95402902A EP95402902A EP0718191B1 EP 0718191 B1 EP0718191 B1 EP 0718191B1 EP 95402902 A EP95402902 A EP 95402902A EP 95402902 A EP95402902 A EP 95402902A EP 0718191 B1 EP0718191 B1 EP 0718191B1
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EP
European Patent Office
Prior art keywords
dose
semen
machine
filling
inverted
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EP95402902A
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German (de)
French (fr)
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EP0718191A1 (en
Inventor
Robert Cassou
Maurice Cassou
Bertrand Cassou
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Instruments de Medecine Veterinaire SA IMV
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Instruments de Medecine Veterinaire SA IMV
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61DVETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D19/00Instruments or methods for reproduction or fertilisation
    • A61D19/02Instruments or methods for reproduction or fertilisation for artificial insemination
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61DVETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D19/00Instruments or methods for reproduction or fertilisation
    • A61D19/02Instruments or methods for reproduction or fertilisation for artificial insemination
    • A61D19/022Containers for animal semen, e.g. pouches or vials ; Methods or apparatus for treating or handling animal semen containers, e.g. filling or closing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • A61J1/10Bag-type containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/003Filling medical containers such as ampoules, vials, syringes or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/045Methods of, or means for, filling the material into the containers or receptacles for filling flexible containers having a filling and dispensing spout, e.g. containers of the "bag-in-box"-type

Definitions

  • the invention relates to an improvement in the preparation of ready-to-use doses, of animal semen intended for insemination, artificial, and more precisely a machine according to the preamble of claim 1 intended for the manufacture of such doses as well as doses according to the preamble of claim 6 produced by this improved machine.
  • a machine and such doses are described in FR-A-2,667,843 and EP-A-480,798 respectively.
  • Doses produced in strips are known in particular comprising sachets made from two sheets of flexible thermoplastic material fixed to each other by weld beads each delimiting a pocket in an approximately rectangular path, one of the short sides of which is interrupted, the weld bead determining towards the outside of the pocket starting from the interruption on this small side, a filling duct extended by a centering flare widening in the direction opposite to the bottom of the rectangular pocket; the two sheets of thermoplastic material are pierced, on the outside of each trace formed by the weld bead, with holes for the tape drive fingers along the manufacturing machine, and in particular in the filling station for the pockets; these holes are themselves surrounded by a weld bead of the two sheets, locally increasing the rigidity of the strip and reducing the tendency for the latter to deform in this zone during filling.
  • the bags are filled with seed sequentially in conjunction with a stepwise movement of the strip in the filling station, by means of a tubular needle connected to a seed reserve, successively introduced into the bags during a phase immobility of the sachets in this station; for this purpose, the needle is driven in a longitudinal translational movement bringing its free end into the filling duct, then remains stationary for the time of filling, and then is driven in a longitudinal translational movement in the opposite direction to the previous one to remove it from the conduit; in the next station, the machine for manufacturing the doses welds together the two sheets of thermoplastic material so as to connect the opposite walls of the centering flare, and thus constitutes a weld bead closing the line of the pocket and thus sealing of the pocket.
  • the sachets are then separated from each other by extending the separation incisions in order to form ready-to-use doses.
  • the probe can be adapted to the dose in a very short time which considerably limits the risks of contamination of the semen by germs. contained in ambient air, and insemination can start immediately after; the actual insemination is also simple and rapid, and, the dose being maintained higher than the tip of the probe, emptying is natural by the combined action of atmospheric pressure, of the animal's genital tract, and of the intrinsic shape of the pocket, flat without reserved volume and without the need to replace a volume of seed with the same volume of air as the flow proceeds.
  • the object of the invention is to remedy this drawback and consequently to create a ready-to-use dose of animal semen which avoids the use of a tool for opening it.
  • the problems posed to create such a dose being more difficult to solve than suggests a superficial examination, the invention relates more particularly to the improvements made to a machine for manufacturing semen doses, and the doses produced by means of this machine. .
  • the invention therefore consists of a machine for manufacturing ready-to-use doses of animal semen, supplied with empty sachets each comprising a filling duct extended upwards by a flaring, machine of the type comprising a filling station equipped with '' a tubular needle connected to a seed reserve and which is driven in a longitudinal translational movement bringing its free end into the filling duct, then immobilized for filling with seed, and driven in a longitudinal translational movement in the opposite direction to the previous one to remove it from the conduit, machine characterized in that the free end of the tubular needle is the free end of a nozzle mounted to slide inside a cleanliness ring, so that when raising the nozzle after filling the bag, after the free end of the latter has reached that of the ring, no seed residue remains externally to the nozzle to soil the following sachet before welding, and in that it has inverted U-shaped welding members to seal the dose by creating a weld bead of the same shape extending up the contour of the flare ,
  • the internal faces of the sachet are kept dry above the level of the flow conduit and the weld produced is in an inverted U, at the time of the manual opening of the dose, the tearing of the two sheets constituting the sachet is most likely to occur in two different directions always transverse to the flare.
  • the invention also relates to a dose of animal semen produced by such a machine, of the type in which the semen is contained in a sachet consisting of two sheets of thermoplastic material welded by a weld bead delimiting a pocket to which is connected a conduit for filling extended by a flaring, dose of seed characterized in that it comprises a sealing weld bead in the form of an inverted U whose branches join the part of the weld bead delimiting the widening in its widest part, an incision approximately perpendicular to the branches of inverted U, and dry internal walls at least between these branches of inverted U.
  • the opening of this dose therefore does not require any instrument, and is faster than the opening of known doses; moreover, this property is obtained without creating in the sachet a zone of fragility so great that it notably increases the risks of involuntary opening of the dose.
  • the problem of allowing a simple opening of a sachet without the aid of a more or less contaminated instrument is generally solved by creating either a line of perforations extending between the two areas to be separated, or a tear primer from an edge of the bag, for example in the form of a slit extending in the direction in which the tearing is desired, or a V incision whose tip is directed in this direction.
  • the two thermoplastic sheets 1 are pierced with four circular holes 7 on the outside of the approximately rectangular layout of the weld; two of these holes are above the short side of the rectangle interrupted by the filling duct, on either side of the centering flare, and the other two below the short side constituting the bottom of the pocket , with the same spacing (of the order of four to five centimeters); these holes 7 are each surrounded by a weld bead.
  • An incision 8 extends perpendicular to the large median of the rectangle, above the upper level of the flare 5; in this way, a tear in this direction perpendicular to the large median reaches the weld bead fixing the sheets 1 to each other, in the region of the sealing bead 6 and not in that of the centering flare 5 , which avoids too extensive damage to the latter; in order to benefit from a good "grip" facilitating the guidance of the tear in the right direction, it is better to start by tearing the bag towards the nearest edge; the length of the incision 8 is of the order of two centimeters, so that this first phase of tearing of the sheets of thermoplastic material can be accomplished by the user simply by inserting one of his fingers into the incision and pulling on the wall thereof; an incision that is too short to allow the user's finger to be inserted would make tearing difficult due to the relatively high mechanical resistance of the thermoplastic material, the choice of which is motivated by the robustness as well as by the seal against external aggressions ( humidity, gas, virus)
  • the sealing weld bead 6 is produced as in FIG. 1 in the form of an inverted U, the free ends of the parallel branches of which are in continuous connection with the ends of the weld bead determining the flaring 5 who are the most excluded.
  • the tendency to tear in two different directions can be further increased by making the bags using two sheets of slightly different thicknesses, or even by orienting the slit in a direction slightly inclined relative to the perpendicular to the branches of the U, but at an angle of less than ten degrees, otherwise we would find the drawbacks associated with a returned V-shaped weld bead.
  • the incision device shown in FIG. 2 comprises an interchangeable blade 11 in the shape of a rectangular trapezoid, the cutting edge of which is the side inclined with respect to the bases and of which an opposite part is placed at the bottom of a housing extending over the entire length of a support plate 12 of generally parallelepiped shape; this housing has a width barely greater than that of the blade, but a substantially greater depth; a counterplate 13 also of generally parallelepipedal shape is itself disposed in the housing over the blade so that the latter is pinched between the plate 12 and the counter plate 13.
  • the blade is fixed by means of screw 14 whose head is supported on or in a housing of the counterplate, and the rod passes through slots provided in the blade in a known manner (it can be for example a blade conventional adaptable to knives known in the art as Stanley knives), and is screwed into tapped holes in the plate.
  • This blade support is mounted on the manufacturing machine, by means of an axis 15 (in one or two parts) passing through it, carried in a bearing of a base 16, so that the blade 11 is movable with its support and its base 16 in a plane approximately perpendicular to the longitudinal axis of the dose and intersecting the plane of the sachet above the widest part of the flare 5; its inclination of a few degrees maximum is preferably modifiable by pivoting the base 16.
  • the heating jaws can be of a thermoregulated type coming into pressure on the film, known per se, insofar as they are adapted to produce an inverted U weld bead; for this purpose their facing zones intended to come to press the thermoplastic sheets have themselves an inverted U shape.
  • the filling cleanliness device shown in FIG. 3 and fitted to the filling station comprises a tubular needle 21 connected to a seed reserve (not shown), having a nozzle 22 a few centimeters long adapted to penetrate the filling duct 4 of the dose, and a portion 23 of seed delivery of larger diameter connected to the nozzle by a shoulder or preferably a frustoconical reduction 24.
  • the tubular needle 21 is carried by the manufacturing machine via '' a shouldered needle holder 25 having a portion 26 of large diameter pierced with a diametral hole through which the portion 23 of seed feed, this feed portion 23 being fixed thereto by means of a screw 27 extending axially in this part of large diameter, and a part 28 of smaller diameter fixed in the machine and having a lateral groove (not visible in the figure) extending in the same direction as the longitudinal axis of the needle.
  • the cleaning device is a removable and disposable ring 29 made of synthetic material, for example that known commercially under the name DELRIN, held on a support (not shown) consisting of two cheeks arranged face to face and between which a corridor is determined.
  • this ring 29 comprises, on the side of the free end of the nozzle, a region 30 of smaller diameter adapted to be inserted between the two sheets of thermoplastic material, and, on the opposite, a fixing flange 31 by which it is kept in its support; the hole in the ring 29 has, at the top of the collar, a small support chamfer which can serve as a stop for the frustoconical reduction 24 of the needle 21.
  • the tubular needle 21 For filling the sachet, the tubular needle 21 is lowered along of its longitudinal axis and introduced between the two sheets 1 in the flare 5 then in the conduit 4, and the descent continues until its frustoconical reduction 24 abuts against the chamfer of the flange 31 of the ring 29, of which the region 30 of smaller diameter is inserted between the two sheets; then the filling is carried out; when the level of seed reaches the desired level, the tubular needle 21 is actuated in longitudinal translation upward, with, almost invariably at least one drop of seed at the free end of its nozzle 22 and around it; when the free end of the nozzle 22 reaches that of the ring 29, either the residual seed drop is detached from the nozzle 22 by the free end of the region 30 of small diameter of the ring, or the continued translation of the nozzle upwards retracts the drop inside the ring; if the quantity of residual seed is relatively large, a part is detached and falls back into the pocket and / or is deposited in the filling duct, and
  • the operations can be continued (inverted U-seal and incision of the bag which has just been filled) and another bag can be filled, the needle filling being lowered through the ring without its outer wall being soiled by semen, and thus the faces of the sheets constituting the sachet remain free from any staining of semen.
  • the removable and disposable cleanliness ring makes it possible to dry the two walls of the sheets constituting the sachet and ensures perfect welding of the U produced, during filling.
  • the two branches of the U being perfectly welded, the self-detaching is carried out in ideal conditions and the rupture of the first sheet is always lower than that of the sheet below, while if we welded on humidified sheets , these two sheets would tear in parallel and the introduction of the insemination probe would become problematic from now on.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Reproductive Health (AREA)
  • Hematology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Bag Frames (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Package Closures (AREA)

Description

L'invention concerne un perfectionnement dans la confection de doses prêtes à l'emploi, de semence animale destinées à l'insémination, artificielle, et plus précisement une machine selon le préambule de la revendication 1 destinée à la fabrication de telles doses ainsi que des doses selon le préambule de la revendication 6 réalisées par cette machine perfectionnée. Une telle machine et de telles doses sont décrites dans FR-A-2 667 843 et EP-A-480 798 respectivement.The invention relates to an improvement in the preparation of ready-to-use doses, of animal semen intended for insemination, artificial, and more precisely a machine according to the preamble of claim 1 intended for the manufacture of such doses as well as doses according to the preamble of claim 6 produced by this improved machine. Such a machine and such doses are described in FR-A-2,667,843 and EP-A-480,798 respectively.

L'insémination artificielle, notamment dans le domaine agricole, au moyen de doses de semence prêtes à l'emploi auxquelles on adapte une sonde sur le lieu de l'insémination, est devenue courante.Artificial insemination, in particular in the agricultural field, by means of ready-to-use semen doses to which a probe is adapted at the place of insemination, has become common.

On connaît notamment des doses réalisées en bandes comportant des sachets constitués à partir de deux feuilles de matière thermoplastigue souple fixées l'une à l'autre par des cordons de soudure délimitant chacun une poche suivant un tracé approximativement rectangulaire dont l'un des petits côtés est interrompu, le cordon de soudure déterminant vers l'extérieur de la poche en partant de l'interruption de ce petit côté, un conduit de remplissage prolongé par un évasement de centrage s'élargissant en direction opposée au fond de la poche rectangulaire ; les deux feuilles de matière thermoplastique sont percées, à l'extérieur de chaque tracé formé par le cordon de soudure, de trous pour des doigts d'entraînement de la bande le long de la machine de fabrication, et notamment dans la station de remplissage des poches ; ces trous sont eux-mêmes entourés d'un cordon de soudure des deux feuilles, augmentant localement la rigidité de la bande et réduisant la tendance à la déformation de celle-ci dans cette zone lors du remplissage. Comme ce remplissage est effectué alors que les sachets sont encore en bande, il est important de faciliter les possibilités de déformation de la poche lors de cette opération, et à cette fin, une incision de grande longueur appelée à délimiter ultérieurement chaque sachet est réalisée dans la bande transversalement à celle-ci entre les poches successives. Les poches sont remplies de semence séquentiellement en conjonction avec un mouvement de défilement pas à pas de la bande dans la station de remplissage, au moyen d'une aiguille tubulaire reliée à une réserve de semence, introduite successivement dans les poches lors d'une phase d'immobilité des sachets dans cette station ; à cet effet, l'aiguille est animée d'un mouvement de translation longitudinale amenant son extrémité libre dans le conduit de remplissage, puis reste immobile le temps du remplissage, et ensuite est animée d'un mouvement de translation longitudinale en sens inverse du précédent pour la retirer du conduit ; dans la station suivante, la machine de fabrication des doses soude l'une à l'autre les deux feuilles de matière thermoplastique de manière à relier les parois opposées de l'évasement de centrage, et constitue ainsi un cordon de soudure de fermeture du tracé de la poche et ainsi de scellement de la poche.Doses produced in strips are known in particular comprising sachets made from two sheets of flexible thermoplastic material fixed to each other by weld beads each delimiting a pocket in an approximately rectangular path, one of the short sides of which is interrupted, the weld bead determining towards the outside of the pocket starting from the interruption on this small side, a filling duct extended by a centering flare widening in the direction opposite to the bottom of the rectangular pocket; the two sheets of thermoplastic material are pierced, on the outside of each trace formed by the weld bead, with holes for the tape drive fingers along the manufacturing machine, and in particular in the filling station for the pockets; these holes are themselves surrounded by a weld bead of the two sheets, locally increasing the rigidity of the strip and reducing the tendency for the latter to deform in this zone during filling. As this filling is carried out while the sachets are still in a strip, it is important to facilitate the possibilities of deformation of the bag during this operation, and to To this end, a very long incision called on to delimit each sachet subsequently is made in the strip transverse to the latter between the successive pockets. The bags are filled with seed sequentially in conjunction with a stepwise movement of the strip in the filling station, by means of a tubular needle connected to a seed reserve, successively introduced into the bags during a phase immobility of the sachets in this station; for this purpose, the needle is driven in a longitudinal translational movement bringing its free end into the filling duct, then remains stationary for the time of filling, and then is driven in a longitudinal translational movement in the opposite direction to the previous one to remove it from the conduit; in the next station, the machine for manufacturing the doses welds together the two sheets of thermoplastic material so as to connect the opposite walls of the centering flare, and thus constitutes a weld bead closing the line of the pocket and thus sealing of the pocket.

Les sachets sont ensuite séparés les uns des autres en prolongeant les incisions de séparation en vue de constituer des doses prêtes à l'utilisation.The sachets are then separated from each other by extending the separation incisions in order to form ready-to-use doses.

Au moment où les doses doivent être utilisées, il suffit, au moyen d'une paire de ciseaux, d'un stylet ou d'un autre outil de coupe, d'effectuer une découpe traversant la partie supérieure de l'évasement de centrage transversalement, par exemple une découpe en V ou même rectiligne, et, d'introduire l'extrémité libre du tube de la sonde dans le conduit de la dose à travers l'évasement qui a ainsi été dégagé.When the doses are to be used, it suffices, using a pair of scissors, a stylus or other cutting tool, to make a cut through the upper part of the centering flare transversely , for example a V-shaped or even straight cut, and, to introduce the free end of the probe tube into the dose conduit through the flare which has thus been released.

Les opérations à effectuer sont donc simples et rapides, la sonde peut être adaptée à la dose en un temps très court ce qui limite considérablement les risques de contamination de la semence par les germes contenus dans l'air ambiant, et l'insémination peut commencer immédiatement après ; l'insémination proprement dite est également simple et rapide, et, la dose étant maintenue plus haut que l'embout de la sonde, le vidage est naturel par l'action combinée de la pression atmosphérique, du tractus génital de l'animal, et de la forme intrinsèque de la poche, plate sans volume réservé et sans nécessité de remplacement d'un volume de semence par le même volume d'air au fur et à mesure de l'écoulement.The operations to be carried out are therefore simple and rapid, the probe can be adapted to the dose in a very short time which considerably limits the risks of contamination of the semen by germs. contained in ambient air, and insemination can start immediately after; the actual insemination is also simple and rapid, and, the dose being maintained higher than the tip of the probe, emptying is natural by the combined action of atmospheric pressure, of the animal's genital tract, and of the intrinsic shape of the pocket, flat without reserved volume and without the need to replace a volume of seed with the same volume of air as the flow proceeds.

Il apparaît cependant une réserve de la part de certains utilisateurs, tenant au fait qu'il est nécessaire de disposer d'un outil de coupe sur le lieu d'insémination, et que cet outil doit être maintenu stérile pendant la durée de l'insémination de plusieurs voire d'un grand nombre d'animaux, ce qui est impossible.It appears however a reservation on the part of certain users, due to the fact that it is necessary to have a cutting tool at the place of insemination, and that this tool must be kept sterile during the duration of the insemination several or even a large number of animals, which is impossible.

L'invention a pour but de remédier à cet inconvénient et en conséquence de créer une dose prête à l'emploi, de semence animale, qui évite l'utilisation d'un outil pour procéder à son ouverture. Les problèmes posés pour créer une telle dose étant plus ardus à résoudre que ne le laisse supposer un examen superficiel, l'invention concerne plus particulièrement les perfectionnements apportés à une machine de fabrication de doses de semence, et les doses fabriquées au moyen de cette machine.The object of the invention is to remedy this drawback and consequently to create a ready-to-use dose of animal semen which avoids the use of a tool for opening it. The problems posed to create such a dose being more difficult to solve than suggests a superficial examination, the invention relates more particularly to the improvements made to a machine for manufacturing semen doses, and the doses produced by means of this machine. .

L'invention consiste donc en une machine de fabrication de doses prêtes à l'emploi, de semence animale, alimentée en sachets vides comportant chacun un conduit de remplissage prolongé vers le haut par un évasement, machine du type comportant une station de remplissage équipée d'une aiguille tubulaire reliée à une réserve de semence et qui est animée d'un mouvement de translation longitudinale amenant son extrémité libre dans le conduit de remplissage, puis immobilisée pendant le remplissage en semence, et animée d'un mouvement de translation longitudinale en sens inverse du précédent pour la retirer du conduit, machine caractérisée en ce que l'extrémité libre de l'aiguille tubulaire est l'extrémité libre d'une buse montée coulissante à l'intérieur d'une bague de propreté, de telle sorte que lors de la remontée de la buse après remplissage du sachet, après que l'extrémité libre de celle-ci ait atteint celle de la bague, aucun résidu de semence ne subsiste extérieurement à la buse pour venir souiller avant soudure le sachet suivant, et en ce qu'elle comporte des organes de soudage en U retourné pour sceller la dose en créant un cordon de soudure de même forme prolongeant vers le haut le contour de l'évasement, et un dispositif d'incision comportant une lame mobile dans un plan approximativement perpendiculaire à l'axe longitudinal de la dose, lequel plan coupe les branches du U tracé par le cordon de soudure de scellement de la dose.The invention therefore consists of a machine for manufacturing ready-to-use doses of animal semen, supplied with empty sachets each comprising a filling duct extended upwards by a flaring, machine of the type comprising a filling station equipped with '' a tubular needle connected to a seed reserve and which is driven in a longitudinal translational movement bringing its free end into the filling duct, then immobilized for filling with seed, and driven in a longitudinal translational movement in the opposite direction to the previous one to remove it from the conduit, machine characterized in that the free end of the tubular needle is the free end of a nozzle mounted to slide inside a cleanliness ring, so that when raising the nozzle after filling the bag, after the free end of the latter has reached that of the ring, no seed residue remains externally to the nozzle to soil the following sachet before welding, and in that it has inverted U-shaped welding members to seal the dose by creating a weld bead of the same shape extending up the contour of the flare , and an incision device comprising a blade movable in a plane approximately perpendicular to the longitudinal axis of the dose, which plane cuts the branches of the U traced by the weld bead for sealing the dose .

Comme, grâce à ces caractéristiques, les faces internes du sachet sont conservées sèches au-dessus du niveau du conduit d'écoulement et la soudure réalisée est en U retourné, au moment de l'ouverture manuelle de la dose, le déchirement des deux feuilles constituant le sachet a les plus grandes chances de se produire dans deux directions différentes toujours transversales à l'évasement.As, thanks to these characteristics, the internal faces of the sachet are kept dry above the level of the flow conduit and the weld produced is in an inverted U, at the time of the manual opening of the dose, the tearing of the two sheets constituting the sachet is most likely to occur in two different directions always transverse to the flare.

L'invention concerne également une dose de semence animale fabriquée par une telle machine, du type dans lequel la semence est contenue dans un sachet constitué de deux feuilles de matière thermoplastique soudées par un cordon de soudure délimitant une poche à laquelle est raccordé un conduit de remplissage prolongé par un évasement, dose de semence caractérisée en ce qu'elle comporte un cordon de soudure de scellement en forme de U retourné dont les branches rejoignent la partie du cordon de soudure délimitant l'évasement dans sa partie la plus large, une incision approximativement perpendiculaire aux branches de U retourné, et des parois internes sèches au moins entre ces branches de U retourné.The invention also relates to a dose of animal semen produced by such a machine, of the type in which the semen is contained in a sachet consisting of two sheets of thermoplastic material welded by a weld bead delimiting a pocket to which is connected a conduit for filling extended by a flaring, dose of seed characterized in that it comprises a sealing weld bead in the form of an inverted U whose branches join the part of the weld bead delimiting the widening in its widest part, an incision approximately perpendicular to the branches of inverted U, and dry internal walls at least between these branches of inverted U.

L'ouverture de cette dose ne nécessite donc aucun instrument, et est plus rapide que l'ouverture des doses connues ; de plus, cette propriété est obtenue sans créer dans le sachet une zone de fragilité tellement grande qu'elle augmente notablement les risques d'ouverture involontaire de la dose.The opening of this dose therefore does not require any instrument, and is faster than the opening of known doses; moreover, this property is obtained without creating in the sachet a zone of fragility so great that it notably increases the risks of involuntary opening of the dose.

D'autres caractéristiques et avantages de l'invention ressortiront de la description qui va suivre d'une forme de réalisation de l'invention donnée à titre d'exemple non limitatif et représentée sur les dessins ci-joints dans lesquels

  • la figure 1 est une vue de face d'une dose de semence animale prête à l'emploi, selon l'invention,
  • la figure 2 est une vue montrant en perspective un dispositif d'incision équipant une machine de fabrication de doses prêtes à l'emploi, selon l'invention,
  • la figure 3 est une vue montrant en perspective une partie d'un dispositif de propreté de remplissage équipant également la machine de fabrication de doses selon l'invention, et
  • la figure 4 est une coupe schématique à plus grande échelle d'un détail de la figure 3 selon la ligne IV-IV de cette figure.
Other characteristics and advantages of the invention will emerge from the description which follows of an embodiment of the invention given by way of nonlimiting example and represented in the attached drawings in which
  • FIG. 1 is a front view of a dose of ready-to-use animal semen according to the invention,
  • FIG. 2 is a view showing in perspective an incision device equipping a machine for manufacturing ready-to-use doses, according to the invention,
  • FIG. 3 is a view showing in perspective part of a filling cleanliness device also fitted to the machine for manufacturing doses according to the invention, and
  • Figure 4 is a schematic section on a larger scale of a detail of Figure 3 along line IV-IV of this figure.

Le problème consistant à permettre une ouverture simple d'un sachet sans l'aide d'un instrument plus ou moins contaminé, est généralement résolu en créant soit une ligne de perforations s'étendant entre les deux zones à séparer, soit une amorce de déchirure partant d'un bord du sachet, par exemple sous la forme d'une fente s'étendant dans la direction dans laquelle le déchirement est souhaité, ou d'une incision en V dont la pointe est dirigée dans cette direction.The problem of allowing a simple opening of a sachet without the aid of a more or less contaminated instrument, is generally solved by creating either a line of perforations extending between the two areas to be separated, or a tear primer from an edge of the bag, for example in the form of a slit extending in the direction in which the tearing is desired, or a V incision whose tip is directed in this direction.

Dans le cas présent, la création d'une ligne de perforations, qui devrait traverser la partie supérieure de la poche, est naturellement inappropriée, car le sachet perdrait son étanchéité. Par ailleurs, la présence d'une amorce de déchirure partant d'un bord du sachet fragiliserait considérablement celui-ci, car un effort de traction s'exerçant d'un côté (ou des efforts de traction s'exerçant des deux côtés) de l'amorce de déchirure, même relativement faible(s) mènerai(en)t tout d'abord à un allongement de la déchirure, et la répétition d'un tel effort l'étendrait petit à petit jusqu'à la zone de soudure de scellement de la dose, et ensuite au-delà de cette soudure, à travers l'évasement, ce qui conduirait à terme à l'ouverture indésirable de la dose.In the present case, the creation of a line of perforations, which should cross the upper part of the pocket, is naturally inappropriate, since the sachet would lose its seal. Furthermore, the presence of a tear primer leaving from an edge of the sachet would considerably weaken the latter, since a tensile force exerted on one side (or tensile forces exerted on two sides) of the initiation of tearing, even relatively small (s) will lead (t) in the first place to an elongation of the tear, and the repetition of such an effort would gradually extend it up to the welding zone of sealing the dose, and then beyond this weld, through the flare, which would ultimately lead to the undesirable opening of the dose.

Aussi, il a été trouvé que si la solution de créer une zone de moindre résistance semblait intéressante, cette zone de moindre résistance, telle qu'une fente, ne doit pas atteindre le bord du sachet ni d'ailleurs la soudure de scellement, pour éviter les conséquences fâcheuses des inévitables imprécisions de fabrication. C'est pourquoi la création d'une simple incision n'atteignant pas les bords de la dose et pratiquée à l'extérieur du cordon de soudure délimitant la poche a été estimée souhaitable. Naturellement, la direction dans laquelle s'étend cette incision est celle dans laquelle le déchirement est souhaité. Une dose comportant une telle incision est représentée sur la figure 1.Also, it has been found that if the solution of creating a zone of less resistance seems advantageous, this zone of less resistance, such as a slit, must not reach the edge of the bag nor, moreover, the sealing weld, avoid the unfortunate consequences of the inevitable manufacturing inaccuracies. This is why the creation of a simple incision not reaching the edges of the dose and made outside the weld bead delimiting the pocket was considered desirable. Naturally, the direction in which this incision extends is that in which the tearing is desired. A dose with such an incision is shown in Figure 1.

Sur cette figure, on voit une dose résultant du découpage d'une bande réalisée à partir de deux feuilles de matière(s) thermoplastique(s) (les feuilles peuvent être composites), les morceaux de feuilles 1 entrant dans la constitution de la dose et qui seront appelés « feuilles » dans la suite par mesure de simplification, étant fixés face contre face par un cordon de soudure 2 délimitant une poche 3 suivant un tracé qui est à vide approximativement rectangulaire ; le petit côté opposé au fond du sachet est interrompu dans sa partie centrale, et le cordon de soudure 2 détermine dans cette zone, vers l'extérieur de la poche en partant de l'interruption, un conduit de remplissage 4 à bords parallèles à la grande médiane du rectangle constituant l'axe longitudinal de symétrie de la poche, puis un évasement 5 s'élargissant en V en direction opposée au fond de la poche ; la dose étant remplie de liquide, les côtés du rectangle sont déformés, donnant à celui-ci une forme « en coussinet » ; un cordon de soudure 6 de scellement de la dose relie les bords opposés de l'évasement 5, à l'extrémité la plus large de celui-ci. Les deux feuilles thermoplastiques 1 sont percées de quatre trous circulaires 7 à l'extérieur du tracé approximativement rectangulaire de la soudure ; deux de ces trous sont au-dessus du petit côté du rectangle interrompu par le conduit de remplissage, de part et d'autre de l'évasement 5 de centrage, et les deux autres au-dessous du petit côté constituant le fond de la poche, avec le même écartement (de l'ordre de quatre à cinq centimètres) ; ces trous 7 sont entourés chacun d'un cordon de soudure.In this figure, we can see a dose resulting from the cutting of a strip made from two sheets of thermoplastic material (s) (the sheets can be composite), the pieces of sheets 1 entering into the composition of the dose. and who will be called “Sheets” in the following for simplification purposes, being fixed face to face by a weld bead 2 delimiting a pocket 3 along a path which is empty, approximately rectangular; the short side opposite the bottom of the sachet is interrupted in its central part, and the weld bead 2 determines in this zone, towards the outside of the pocket starting from the interruption, a filling duct 4 with edges parallel to the large median of the rectangle constituting the longitudinal axis of symmetry of the pocket, then a widening 5 widening in V in the direction opposite to the bottom of the pocket; the dose being filled with liquid, the sides of the rectangle are deformed, giving it a "cushion"shape; a weld bead 6 for sealing the dose connects the opposite edges of the flare 5, at the widest end of the latter. The two thermoplastic sheets 1 are pierced with four circular holes 7 on the outside of the approximately rectangular layout of the weld; two of these holes are above the short side of the rectangle interrupted by the filling duct, on either side of the centering flare, and the other two below the short side constituting the bottom of the pocket , with the same spacing (of the order of four to five centimeters); these holes 7 are each surrounded by a weld bead.

Une incision 8 s'étend perpendiculairement à la grande médiane du rectangle, au-dessus du niveau supérieur de l'évasement 5 ; de la sorte, un déchirement dans cette direction perpendiculaire à la grande médiane atteint le cordon de soudure fixant les feuilles 1 l'une à l'autre, dans la région du cordon 6 de scellement et non dans celle de l'évasement de centrage 5, ce qui évite un endommagement trop étendu de ce dernier ; afin de bénéficier d'une bonne « prise » facilitant le guidage du déchirement dans la bonne direction, il est préférable de commencer par déchirer le sachet en direction du bord le plus proche ; la longueur de l'incision 8 est de l'ordre de deux centimètres, de telle sorte que cette première phase de déchirement des feuilles de matière thermoplastique puisse être accomplie par l'utilisateur simplement en introduisant l'un de ses doigts dans l'incision et en tirant sur la paroi de celle-ci ; une incision trop courte pour permettre l'introduction du doigt de l'utilisateur rendrait le déchirement difficile par suite de la résistance mécanique relativement importante de la matière thermoplastique, dont le choix est motivé par la robustesse ainsi que par l'étanchéité aux agressions extérieures (humidité, gaz, virus) désirées pour les doses.An incision 8 extends perpendicular to the large median of the rectangle, above the upper level of the flare 5; in this way, a tear in this direction perpendicular to the large median reaches the weld bead fixing the sheets 1 to each other, in the region of the sealing bead 6 and not in that of the centering flare 5 , which avoids too extensive damage to the latter; in order to benefit from a good "grip" facilitating the guidance of the tear in the right direction, it is better to start by tearing the bag towards the nearest edge; the length of the incision 8 is of the order of two centimeters, so that this first phase of tearing of the sheets of thermoplastic material can be accomplished by the user simply by inserting one of his fingers into the incision and pulling on the wall thereof; an incision that is too short to allow the user's finger to be inserted would make tearing difficult due to the relatively high mechanical resistance of the thermoplastic material, the choice of which is motivated by the robustness as well as by the seal against external aggressions ( humidity, gas, virus) desired for doses.

Cependant, dans ces conditions, si la déchirure aboutit bien au cordon de soudure de scellement 6, la direction dans laquelle s'étend ce cordon de soudure influe largement sur la poursuite de l'opération ; plus précisément, le déchirement se poursuit généralement le long du cordon de soudure, à moins que celui-ci s'étende comme sur la figure 1 pratiquement perpendiculairement à la direction du déchirement (donc parallèlement à l'axe longitudinal de la dose) ; on peut noter que même si la déchirure a traversé le cordon de soudure 6 dans la direction correcte, un tel guidage peut être provoqué par la paroi du cordon de soudure qui est à l'intérieur de l'évasement, et ainsi, les soudures en V retourné, ou rectilignes à la partie supérieure de l'évasement, ou courbes, sont complètement à proscrire.However, under these conditions, if the tear ends well at the sealing weld bead 6, the direction in which this weld bead extends largely influences the continuation of the operation; more precisely, the tearing generally continues along the weld bead, unless the latter extends as in FIG. 1 practically perpendicular to the direction of the tear (therefore parallel to the longitudinal axis of the dose); it can be noted that even if the tear has passed through the weld bead 6 in the correct direction, such guidance can be caused by the wall of the weld bead which is inside the flare, and thus, the welds in V turned, or straight at the top of the flare, or curved, are completely prohibited.

Aussi, selon l'invention, le cordon de soudure de scellement 6 est réalisé comme sur la figure 1 en forme de U retourné dont les extrémités libres des branches parallèles sont en connexion sans discontinuité avec les extrémités du cordon de soudure déterminant l'évasement 5 qui sont les plus écartées.Also, according to the invention, the sealing weld bead 6 is produced as in FIG. 1 in the form of an inverted U, the free ends of the parallel branches of which are in continuous connection with the ends of the weld bead determining the flaring 5 who are the most excluded.

De la sorte, après avoir franchi le cordon de soudure 6, le déchirement se poursuit dans une direction aléatoire généralement différente de celle dans laquelle s'étend le cordon de soudure, et la traversée de l'espace entre les branches parallèles du U retourné est statistiquement assurée.In this way, after having crossed the weld bead 6, the tearing continues in a random direction generally different from that in which the weld bead extends, and the crossing of the space between the parallel branches of the inverted U is statistically assured.

Cependant, dans ces conditions, la séparation des deux feuilles disposées l'une contre l'autre, dans la zone s'étendant entre les branches parallèles du U, pour introduire entre elles le tube de la sonde, reste difficile. En effet, aux différentes sources de forces d'attraction entre les deux feuilles (moléculaire, électrostatique, etc.) liées à la structure lisse de leur surface et à la nature du matériau qui les constitue, vient s'ajouter pratiquement toujours la force d'adhésion due à la présence d'un film mince de semence dans la zone inférieure du sachet.However, under these conditions, the separation of the two sheets placed one against the other, in the zone extending between the parallel branches of the U, to introduce the probe tube between them, remains difficult. In fact, to the different sources of attraction forces between the two sheets (molecular, electrostatic, etc.) linked to the smooth structure of their surface and the nature of the material which constitutes them, there is almost always added the force of adhesion due to the presence of a thin film of seed in the lower zone of the sachet.

Pour cette raison et aussi parce que la soudure doit être faite sur des parois sèches pour parvenir à une qualité aussi parfaite que possible du cordon de soudure et ainsi de l'auto-détachable, il est donc nécessaire de parvenir à empêcher toute présence de semence (ou d'un autre liquide) en aussi faible quantité soit-elle, entre les branches du U retourné, voire à l'intérieur de l'évasement 5, et à l'extérieur du sachet.For this reason and also because the soldering must be done on dry walls to achieve as perfect a quality as possible of the weld bead and thus of the self-detaching, it is therefore necessary to succeed in preventing any presence of seed (or another liquid) in as small a quantity as it is, between the branches of the inverted U, or even inside the flare 5, and outside the sachet.

Or, l'expérience montre que dans les conditions normales de stockage et de manipulation des doses de semence, la présence d'un film de semence dans la région en question est due dans la plupart des cas au fait que de la semence restant à l'extrémité de l'aiguille tubulaire de remplissage et autour de cette extrémité après l'interruption de l'alimentation de l'aiguille en semence pour emplir une poche, est déposée, involontairement pendant le défilement des feuilles par contact de l'aiguille avec celles-ci ; de plus, les souillures qui surviennent à l'extérieur du cordon de soudure polluent et contaminent les machines, le système d'entraînement peut se bloquer, et des troubles de défilement des sachets peuvent apparaître à cause de ces souillures, car le dilueur mélangé à la semence comporte notamment du sucre ; enfin, ces souillures polluent et contaminent également le contenu du sachet lors de l'ouverture de celui-ci.However, experience shows that under normal conditions of storage and handling of semen doses, the presence of a seed film in the region in question is due in most cases to the fact that the semen remaining at the the end of the tubular filling needle and around this end after the interruption of the feeding of the needle in semen to fill a pocket, is deposited, involuntarily during the scrolling of the sheets by contact of the needle with those -this ; Moreover, the soiling which occurs outside the weld bead pollutes and contaminates the machines, the drive system can become blocked, and problems with the movement of the sachets can appear because of this soiling, since the diluent mixed with the semen includes in particular sugar ; finally, these soils pollute and also contaminate the contents of the sachet when it is opened.

Des essais effectués en prenant les précautions nécessaires pour que l'intérieur de l'évasement 5 et du U retourné du cordon de soudure de scellement 6, et l'extérieur des sachets, restent parfaitement secs, montrent que les feuilles 1 se séparent alors d'autant plus facilement que le déchirement se poursuit au-delà de la soudure dans des directions différentes ; cet effet surprenant est attribué au fait que l'inhomogénéïté de la matière à la transition entre cordon de soudure et zone intérieure de la poche mentionnée plus haut est suffisamment grande pour que les directions aléatoires de la poursuite du déchirement des deux feuilles soient différentes, tandis que précédemment cette inhomogénéïté étant compensée par le fait que les deux feuilles étaient « collées », elles se comportaient comme une feuille unique et ainsi se déchiraient dans la même direction. La tendance au déchirement dans deux directions différentes peut être encore accrue en réalisant les sachets au moyen de deux feuilles d'épaisseurs légèrement différentes, ou même en orientant la fente dans une direction un peu inclinée par rapport à la perpendiculaire aux branches du U, mais d'un angle inférieur à une dizaine de degrés, faute de quoi on retrouverait les inconvénients liés à un cordon de soudure de scellement en V retourné.Tests carried out while taking the necessary precautions so that the inside of the flare 5 and of the U turned over from the sealing weld bead 6, and the outside of the sachets, remain perfectly dry, show that the sheets 1 then separate from each other. 'all the more easily as the tearing continues beyond the weld in different directions; this surprising effect is attributed to the fact that the inhomogeneity of the material at the transition between the weld bead and the interior zone of the pocket mentioned above is large enough for the random directions of the further tearing of the two sheets to be different, while that previously this inhomogeneity being compensated for by the fact that the two sheets were "glued", they behaved like a single sheet and thus tore in the same direction. The tendency to tear in two different directions can be further increased by making the bags using two sheets of slightly different thicknesses, or even by orienting the slit in a direction slightly inclined relative to the perpendicular to the branches of the U, but at an angle of less than ten degrees, otherwise we would find the drawbacks associated with a returned V-shaped weld bead.

En conclusion, une ouverture aisée de la dose, sans l'aide d'instrument, nécessite

  • une incision s'étendant dans une direction appropriée,
  • un cordon de soudure s'étendant également dans une direction appropriée, approximativement perpendiculaire à celle de l'incision dans le prolongement de celle-ci,
  • des faces internes des feuilles parfaitement sèches dans la zone de déchirement.
In conclusion, an easy opening of the dose, without the aid of an instrument, requires
  • an incision extending in an appropriate direction,
  • a weld bead also extending in a suitable direction, approximately perpendicular to that of the incision in the extension thereof,
  • inner sides of perfectly dry leaves in the tear zone.

A cet effet, la machine de fabrication des doses est munie, en bref,

  • d'une lame montée sur un support de lame, pour effectuer l'incision,
  • de deux mâchoires chauffantes présentant un profil en U retourné pour effectuer le cordon de soudure de scellement après remplissage de la poche,
  • d'une aiguille tubulaire de remplissage munie d'un organe de propreté évitant le dépôt de goutte(s) contre la face interne des feuilles au-dessus du conduit de remplissage.
For this purpose, the machine for manufacturing the doses is provided, in short,
  • a blade mounted on a blade support, to make the incision,
  • two heating jaws with an inverted U-shaped profile to make the sealing weld bead after filling the pocket,
  • a tubular filling needle provided with a cleansing device preventing the deposition of drop (s) against the internal face of the sheets above the filling duct.

Le dispositif d'incision représenté sur la figure 2 comporte une lame 11 interchangeable en forme de trapèze rectangle dont le tranchant est le côté incliné par rapport aux bases et dont une partie à l'opposé est placée au fond d'un logement s'étendant sur toute la longueur d'une plaque support 12 de forme générale parallélépipédique ; ce logement présente une largeur à peine supérieure à celle de la lame, mais une profondeur sensiblement supérieure ; une contreplaque 13 également de forme générale parallélépipédique est elle-même disposée dans le logement par-dessus la lame de telle sorte que celle-ci soit pincée entre la plaque 12 et la contre-plaque 13. La fixation de la lame est réalisée par des vis 14 dont la tête prend appui sur ou dans un logement de la contre-plaque, et la tige traverse des lumières prévues dans la lame de manière connue (il peut s'agir par exemple d'une lame conventionnelle adaptable aux couteaux connus dans la technique sous le nom de couteaux Stanley), et se visse dans des trous taraudés de la plaque. Ce support de lame est monté sur la machine de fabrication, au moyen d'un axe 15 (en une ou deux parties) le traversant, porté dans un palier d'une base 16, de telle sorte que la lame 11 soit mobile avec son support et sa base 16 dans un plan approximativement perpendiculaire à l'axe longitudinal de la dose et coupant le plan du sachet au-dessus de la partie la plus large de l'évasement 5 ; son inclinaison de quelques degrés au maximum est de préférence modifiable par pivotement de la base 16.The incision device shown in FIG. 2 comprises an interchangeable blade 11 in the shape of a rectangular trapezoid, the cutting edge of which is the side inclined with respect to the bases and of which an opposite part is placed at the bottom of a housing extending over the entire length of a support plate 12 of generally parallelepiped shape; this housing has a width barely greater than that of the blade, but a substantially greater depth; a counterplate 13 also of generally parallelepipedal shape is itself disposed in the housing over the blade so that the latter is pinched between the plate 12 and the counter plate 13. The blade is fixed by means of screw 14 whose head is supported on or in a housing of the counterplate, and the rod passes through slots provided in the blade in a known manner (it can be for example a blade conventional adaptable to knives known in the art as Stanley knives), and is screwed into tapped holes in the plate. This blade support is mounted on the manufacturing machine, by means of an axis 15 (in one or two parts) passing through it, carried in a bearing of a base 16, so that the blade 11 is movable with its support and its base 16 in a plane approximately perpendicular to the longitudinal axis of the dose and intersecting the plane of the sachet above the widest part of the flare 5; its inclination of a few degrees maximum is preferably modifiable by pivoting the base 16.

Les mâchoires chauffantes peuvent être d'un type thermorégulé venant en pression sur le film, connu en soi, dans la mesure où elles sont adaptées à réaliser un cordon de soudure en U retourné ; à cet effet leurs zones en regard destinées à venir presser les feuilles thermoplastiques ont elles-mêmes une forme en U retourné.The heating jaws can be of a thermoregulated type coming into pressure on the film, known per se, insofar as they are adapted to produce an inverted U weld bead; for this purpose their facing zones intended to come to press the thermoplastic sheets have themselves an inverted U shape.

Le dispositif de propreté de remplissage représenté sur la figure 3 et équipant la station de remplissage comporte une aiguille tubulaire 21 reliée à une réserve de semence (non représentée), présentant une buse 22 de quelques centimètres de long adaptée à pénétrer dans le conduit de remplissage 4 de la dose, et une partie 23 d'amenée de semence de plus grand diamètre raccordée à la buse par un épaulement ou de préférence une réduction tronconique 24. L'aiguille tubulaire 21 est portée par la machine de fabrication par l'intermédiaire d'un porte-aiguille épaulé 25 présentant une partie 26 de grand diamètre percée d'un trou diamétral que traverse la partie 23 d'amenée de semence, cette partie d'amenée 23 y étant fixée au moyen d'une vis 27 s'étendant axialement dans cette partie de grand diamètre, et une partie 28 de plus petit diamètre fixée dans la machine et présentant une rainure latérale (non visible sur la figure) s'étendant dans la même direction que l'axe longitudinal de l'aiguille. L'organe de propreté est une bague 29 amovible et jetable en matière synthétique, par exemple celle connue commercialement sous le nom de DELRIN, maintenue sur un support (non représenté) constitué de deux joues disposées face à face et entre lesquelles est déterminé un couloir dans et le long duquel défile la région supérieure de la bande de sachets comportant le conduit de remplissage et l'évasement, bague dans laquelle l'aiguille 21 est montée coulissante (ajustée avec un léger jeu) ; cette bague 29 comporte, du côté de l'extrémité libre de la buse, une région 30 de plus petit diamètre adaptée à être insérée entre les deux feuilles en matière thermoplastique, et, à l'opposé, une collerette de fixation 31 par laquelle elle est maintenue dans son support ; le trou de la bague 29 comporte, en haut de la collerette, un petit chanfrein d'appui pouvant servir de butée à la réduction tronconique 24 de l'aiguille 21. Pour le remplissage du sachet, l'aiguille tubulaire 21 est descendue le long de son axe longitudinal et introduite entre les deux feuilles 1 dans l'évasement 5 puis dans le conduit 4, et la descente se poursuit jusqu'à ce que sa réduction tronconique 24 bute contre le chanfrein de la collerette 31 de la bague 29, dont la région 30 de plus petit diamètre est insérée entre les deux feuilles ; puis le remplissage est effectué ; lorsque le niveau de semence atteint le niveau désiré, l'aiguille tubulaire 21 est actionnée en translation longitudinale vers le haut, avec, presque immanquablement au moins une goutte de semence à l'extrémité libre de sa buse 22 et autour de celle-ci ; lorsque l'extrémité libre de la buse 22 atteint celle de la bague 29, soit la goutte résiduelle de semence est détachée de la buse 22 par l'extrémité libre de la région 30 de petit diamètre de la bague, soit la poursuite de la translation de la buse vers le haut escamote la goutte à l'intérieur de la bague ; si la quantité de semence résiduelle est relativement importante, une partie est détachée et retombe dans la poche et/ou se dépose dans le conduit de remplissage, et une partie est escamotée dans la bague, mais l'évasement et la zone de la soudure de scellement restent secs, et lors de l'écrasement de la partie supérieure de la dose au moment de la soudure, aucun film de liquide ne s'étendra jusque là et a fortiori au-delà. Lorsque la base de la buse a atteint un niveau supérieur à la base de la bague, les opérations peuvent être poursuivies (scellement en U retourné et incision du sachet qui vient d'être rempli) et un autre sachet peut être rempli, l'aiguille de remplissage étant redescendue au travers de la bague sans que sa paroi extérieure soit souillée par de la semence, et ainsi les faces des feuilles constituant le sachet restent indemnes de toute souillure de semence.The filling cleanliness device shown in FIG. 3 and fitted to the filling station comprises a tubular needle 21 connected to a seed reserve (not shown), having a nozzle 22 a few centimeters long adapted to penetrate the filling duct 4 of the dose, and a portion 23 of seed delivery of larger diameter connected to the nozzle by a shoulder or preferably a frustoconical reduction 24. The tubular needle 21 is carried by the manufacturing machine via '' a shouldered needle holder 25 having a portion 26 of large diameter pierced with a diametral hole through which the portion 23 of seed feed, this feed portion 23 being fixed thereto by means of a screw 27 extending axially in this part of large diameter, and a part 28 of smaller diameter fixed in the machine and having a lateral groove (not visible in the figure) extending in the same direction as the longitudinal axis of the needle. The cleaning device is a removable and disposable ring 29 made of synthetic material, for example that known commercially under the name DELRIN, held on a support (not shown) consisting of two cheeks arranged face to face and between which a corridor is determined. in and along which runs the upper region of the strip of bags comprising the filling duct and the flare, ring in which the needle 21 is slidably mounted (adjusted with a slight play); this ring 29 comprises, on the side of the free end of the nozzle, a region 30 of smaller diameter adapted to be inserted between the two sheets of thermoplastic material, and, on the opposite, a fixing flange 31 by which it is kept in its support; the hole in the ring 29 has, at the top of the collar, a small support chamfer which can serve as a stop for the frustoconical reduction 24 of the needle 21. For filling the sachet, the tubular needle 21 is lowered along of its longitudinal axis and introduced between the two sheets 1 in the flare 5 then in the conduit 4, and the descent continues until its frustoconical reduction 24 abuts against the chamfer of the flange 31 of the ring 29, of which the region 30 of smaller diameter is inserted between the two sheets; then the filling is carried out; when the level of seed reaches the desired level, the tubular needle 21 is actuated in longitudinal translation upward, with, almost invariably at least one drop of seed at the free end of its nozzle 22 and around it; when the free end of the nozzle 22 reaches that of the ring 29, either the residual seed drop is detached from the nozzle 22 by the free end of the region 30 of small diameter of the ring, or the continued translation of the nozzle upwards retracts the drop inside the ring; if the quantity of residual seed is relatively large, a part is detached and falls back into the pocket and / or is deposited in the filling duct, and a part is retracted in the ring, but the flaring and the weld area of sealing remain dry, and when the upper part of the dose is crushed at the time of welding, no film of liquid will extend until there and a fortiori beyond. When the base of the nozzle has reached a level higher than the base of the ring, the operations can be continued (inverted U-seal and incision of the bag which has just been filled) and another bag can be filled, the needle filling being lowered through the ring without its outer wall being soiled by semen, and thus the faces of the sheets constituting the sachet remain free from any staining of semen.

En conclusion, la bague de propreté amovible et jetable permet d'assécher les deux parois des feuilles constituant le sachet et assure une parfaite soudure du U réalisé, pendant le remplissage. Les deux branches du U étant parfaitement soudées, l'auto-détachable est réalisé dans des conditions idéales et la rupture de la première feuille est toujours plus bas que celle de la feuille du dessous, tandis que si l'on soudait sur des feuilles humidifiées, ces deux feuilles se déchireraient parallèlement et l'introduction de la sonde d'insémination devriendrait désormais problématique.In conclusion, the removable and disposable cleanliness ring makes it possible to dry the two walls of the sheets constituting the sachet and ensures perfect welding of the U produced, during filling. The two branches of the U being perfectly welded, the self-detaching is carried out in ideal conditions and the rupture of the first sheet is always lower than that of the sheet below, while if we welded on humidified sheets , these two sheets would tear in parallel and the introduction of the insemination probe would become problematic from now on.

Bien entendu, l'invention n'est pas limitée aux formes de réalisation ci-dessus décrites et représentées, et on pourra en prévoir d'autres formes sans sortir de son cadre, tel que définit dans les revendications.Of course, the invention is not limited to the embodiments described above and shown, and we can provide other forms without departing from its scope, as defined in the claims.

Claims (9)

  1. A machine for the production of ready-to-use doses of animal semen, supplied with empty sachets each comprising a filling conduit (4) which is prolonged upwardly by an enlargement (5), the machine being of the type comprising a filling station provided with a tubular needle (21) connected to a store of semen and which is displaced with a longitudinal translatory movement for moving its free end into the filling conduit and then immobilised during the semen filling operation and displaced with a longitudinal translatory movement in the reverse direction to the previous movement to withdraw it from the conduit, the machine being characterised in that the free end of the tubular needle is the free end of a nozzle (22) mounted slidably in the interior of a cleanliness ring (29) in such a way that in the return upward movement of the nozzle after filling of the sachet after the free end thereof has reached that of the ring no residue of semen remains externally to the nozzle to taint the following sachet prior to welding, and that it comprises welding members in the form of an inverted U for sealing the dose by creating a weld line (6) of the same shape which prolongs the contour of the enlargement in an upward direction, and a cutting device comprising a blade (11) movable in a plane approximately perpendicular to the longitudinal axis of the dose, which plane intersects the arms of the U which is defined by the weld line for sealing the dose.
  2. A machine according to claim 1 characterised in that, at the side of the free end of the nozzle (22), the ring (29) comprises a region (30) of small diameter and, opposite thereto, a collar (31) for bearing on a support.
  3. A machine according to claim 2 characterised in that the tubular needle (21) comprises a semen feed part (23) of larger diameter than the nozzle (22) and connected thereto by a frustoconical reduction (24) and the ring (29) internally comprises a bevel in the upper part of the collar (31).
  4. A machine according to claim 1 characterised in that the cutting device comprises a blade support comprising a plate (12) and a co-operating plate (13), between which the blade (11) is inserted.
  5. A machine according to claim 1 characterised in that the cutting device comprises a blade support mounted on a base (16) which can be modified in respect of inclination.
  6. A dose of animal semen produced by the machine according to one of claims 1 to 5 of the type in which the semen is contained in a sachet formed by two sheets (1) of thermoplastic material which are welded by a weld line (2) defining a pocket (3), to which there is connected a filling conduit (4) which is prolonged by an enlargement (5), the dose of semen being characterised in that it comprises a sealing weld line (6) in the shape of an inverted U, the arms of which join the part of the weld line (2) delimiting the enlargement (5) in its widest part, a cut (8) approximately perpendicular to the arms of the inverted U, and internal walls which are dry at least between said arms of the inverted U.
  7. A dose of animal semen according to claim 6 characterised in that the prolongation of the cut (8) intersects the arms of the inverted U above the level of the part of greatest width of the enlargement (5).
  8. A dose of animal semen according to claim 6 characterised in that the ends of the cut (8) are at a spacing from the edge of the dose and the sealing weld (6).
  9. A dose of animal semen according to claim 6 characterised in that the sheets (1) of thermoplastic material are of different thicknesses.
EP95402902A 1994-12-23 1995-12-21 Packaging machine for ready-to-use doses of animal semen and filled package obtained from this machine Expired - Lifetime EP0718191B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9415621A FR2728456B1 (en) 1994-12-23 1994-12-23 MACHINE FOR MANUFACTURING READY-TO-USE DOSES, ANIMAL SEED AND DOSE OF SEED MADE BY THIS MACHINE
FR9415621 1994-12-23

Publications (2)

Publication Number Publication Date
EP0718191A1 EP0718191A1 (en) 1996-06-26
EP0718191B1 true EP0718191B1 (en) 1997-07-09

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EP95402902A Expired - Lifetime EP0718191B1 (en) 1994-12-23 1995-12-21 Packaging machine for ready-to-use doses of animal semen and filled package obtained from this machine

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US (3) US5735401A (en)
EP (1) EP0718191B1 (en)
KR (1) KR100212640B1 (en)
CN (1) CN1067955C (en)
CA (1) CA2165381C (en)
DE (1) DE69500419T2 (en)
DK (1) DK0718191T3 (en)
ES (1) ES2106625T3 (en)
FR (1) FR2728456B1 (en)

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Also Published As

Publication number Publication date
CN1067955C (en) 2001-07-04
US6044618A (en) 2000-04-04
CA2165381C (en) 2000-07-11
US6079184A (en) 2000-06-27
US5735401A (en) 1998-04-07
DK0718191T3 (en) 1998-02-09
ES2106625T3 (en) 1997-11-01
DE69500419T2 (en) 1998-02-26
CA2165381A1 (en) 1996-06-24
FR2728456B1 (en) 1997-03-21
FR2728456A1 (en) 1996-06-28
KR960020952A (en) 1996-07-18
KR100212640B1 (en) 1999-08-02
EP0718191A1 (en) 1996-06-26
DE69500419D1 (en) 1997-08-14
CN1130585A (en) 1996-09-11

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