EP1677660B1 - Sac filtrant et procede de production correspondant - Google Patents

Sac filtrant et procede de production correspondant Download PDF

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Publication number
EP1677660B1
EP1677660B1 EP04817144A EP04817144A EP1677660B1 EP 1677660 B1 EP1677660 B1 EP 1677660B1 EP 04817144 A EP04817144 A EP 04817144A EP 04817144 A EP04817144 A EP 04817144A EP 1677660 B1 EP1677660 B1 EP 1677660B1
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EP
European Patent Office
Prior art keywords
bag
filter bag
filter
closed
bag according
Prior art date
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Active
Application number
EP04817144A
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German (de)
English (en)
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EP1677660A1 (fr
Inventor
Jan Eurofilters N.V. SCHULTINK
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Eurofilters NV
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Eurofilters NV
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Publication date
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Publication of EP1677660A1 publication Critical patent/EP1677660A1/fr
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Publication of EP1677660B1 publication Critical patent/EP1677660B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0016—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom made from already formed bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2241/00—Making bags or boxes intended for a specific use
    • B31B2241/008—Making suction cleaner bags
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/02—Vacuum cleaner bags
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1067—Continuous longitudinal slitting
    • Y10T156/1069—Bonding face to face of laminae cut from single sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • Y10T156/1079—Joining of cut laminae end-to-end
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1712—Indefinite or running length work
    • Y10T156/1739—Webs of different width, longitudinally aligned

Definitions

  • the invention relates to a filter bag for a vacuum cleaner with a tubular bag and a closed free end portion and an opposite, at least partially closed area and a holding plate, wherein the partially closed area is folded forming a bottom.
  • Filter bags for vacuum cleaners which have a tubular bag and in addition to a closed free end region a folded bottom, a so-called.
  • Block bottom are known in the art.
  • dust bag from a paper material, which can be processed on conventional tubular bag systems made.
  • a corresponding holding plate is usually attached to the bottom of the block, which has an opening through which the cleaning air is performed.
  • the task of the block bottom is to stabilize the filter bag and to form a three-dimensional bag.
  • the block bottom also facilitates the installation of the bag in the vacuum cleaner.
  • the DE 100 64 608 A1 describes a solution as a holding plate can be attached to such a bag. Thereafter, a tubular arrangement of the vacuum cleaner bag is first made to form a longitudinal edge fold. This tubular arrangement is then separated so that a second end region is formed. The opposite free ends of such a hose-like arrangement are closed and a holding plate, after forming a corresponding opening, associated with an end region. According to the teaching of DE 100 64 608 A1 Subsequently, a special fold is made in the region of the vacuum cleaner bag between the area provided with the holding plate and the free end. Due to the special design of transverse folds a stabilization of the limp bag should be achieved.
  • a filter bag made of a nonwoven material which has at least one end portion which is similar in construction to that of a block bottom, made of paper material, comparable.
  • Another object of the invention is to provide a method for producing such a filter bag.
  • the vacuum cleaner bag which consists of a nonwoven composite material, has an at least partially closed end opposite the free closed end, wherein this is folded forming a bottom.
  • the folding according to the present invention is designed so that at least partially superimposed layers of the bag material are present in the ground and these are at least partially interconnected.
  • the decisive advantage of the solution according to the invention can be seen in the fact that stabilization is achieved by the central weld and the at least partial joining of the layers folded over one another of the floor is sufficient, even to provide a pliable material, a vacuum cleaner bag that can be provided at any point with a holding plate and thereby can be easily installed in a vacuum cleaner.
  • the holding plate can be freely selected in relation to their design.
  • the central weld is guided over the entire width of the soil.
  • an increased stability of the bottom formed by the folding is achieved.
  • the joining of the superimposed layers, which have been formed by the folding, is preferably carried out by welding or gluing. This gluing or welding can be linear. As a result, a directed reinforcement of the soil can be realized.
  • the vacuum cleaner bag according to the invention it is also advantageous if over the long sides, ie over those surfaces of the vacuum cleaner bag between the closed free end and the at least partially closed end with the inventively designed bottom are introduced into the thus spanned side surfaces Vorbrüche, so that a convolution becomes possible.
  • the breakouts can be designed so that they, for example, from the respective corners of the bottom, if this is square, for example, quadrangular shaped, go out and are led to the opposite free end.
  • a further advance is introduced into the bag material. This facilitates the introduction of gussets and increases the surface area of the vacuum cleaner bag.
  • the vacuum cleaner bag can serve for further stabilization of the bag material.
  • material densifications are understood, which are preferably formed linear.
  • the pre-fractures can be introduced by means of a suitable molding tool and / or by welding.
  • the filter bag according to the invention also has a pre-break which is guided parallel to the central weld seam. This serves to fold over the bottom in the direction of the longitudinal side of the filter bag. It is therefore sufficient if such a pre-break exists.
  • the distance of the pre-breakage is selected so that, starting from the central weld, it corresponds to the width of the floor.
  • the bottom has an angular, particularly preferably a rectangular shape.
  • the projections are made starting from the respective short sides of the rectangle to the free closed end. Another pre-break is led from the central weld to the free end. Such an embodiment has proven to be particularly preferred.
  • the holding plate With respect to the holding plate, according to the present invention, it is possible to connect them either to the block bottom, as known from paper filter bags, or to mount the holding plate on the free side surfaces of the vacuum cleaner bag. Preferred here is the embodiment in which the holding plate on the bottom of the bag, this at least partially overlapping, is attached. Characterized in that according to the present invention, the bag is stabilized by the formation of the soil, and the holding plate can be mounted inside lying in the bag. This can e.g. be realized by the holding plate is simultaneously introduced and connected with the provided for bottoming punch.
  • a further advantage is that by the stabilization of the soil as such one-piece holding plates can be used. These can also be provided with a closure mechanism.
  • the holding plate is constructed as known per se from the prior art and has at least one passage opening, which serves to supply the air to be cleaned.
  • the retaining plate may further comprise an element, e.g. B. have a slider or a flap to close the opening.
  • the holding plate can be connected to the bottom of the bag with all common techniques of the prior art. For this purpose, e.g. sticking or welding in question.
  • the holding plate is arranged on the side surfaces of the vacuum cleaner bag. It is preferred in this case if the holding plate is mounted in the vicinity of the soil, since thereby through the ground freely clamped interior can be exploited in the bag for the introduction of a filler neck and an advantageous air flow.
  • the holding plates can, as in and of themselves known from the prior art, consist of plastic or cardboard.
  • the bag material is formed from a multilayer nonwoven composite material, as for example in the WO 01/03802 A1 is described.
  • the disclosure of this document is therefore expressly incorporated by reference.
  • the invention also includes all other nonwoven materials heretofore known in the art for filter bags.
  • the invention further relates to a method for producing a filter bag as described above.
  • a tubular bag is produced with the at least partially closed end region.
  • this tubular bag with the at least partially closed end region can be carried out cyclically.
  • the tubular bag is made by the formation of the tubular material by bonding z.
  • the joining of the edges of the layers and the closing of the open end can take place cyclically. As well a continuous bonding of the edges of the layers is possible.
  • the bonding both in the formation of the tube as well as the connection of the open end can be done by ultrasonic welding. Also a thermal welding is possible.
  • the welding is carried out so that the weld is guided over the two superimposed webs.
  • the formation of the Vorbrüche during the process step a) is performed.
  • the pre-fractures are thus introduced into the filter bag by means of suitable molding tools or by additional welding seams.
  • the invention also encompasses those embodiments in which the introduction of the preliminary fractions is carried out in a method step which is present before or after method step a).
  • the variant described above is preferred in which the pre-fractures are already introduced during process step a).
  • the formation of the soil is carried out according to the present Invention in that a stamp is introduced from the open side into the bag produced according to method step a). As a result, the closed end automatically folds up in the area of the floor. To stabilize the soil formed thereby, it is then essential that the superimposed layers formed by the folding be at least partially connected. This is preferably carried out so that the superimposed layers are glued or welded. This achieves additional stabilization of the soil.
  • all known from the prior art methods can be applied. In this case, a gluing or welding should be mentioned. Also, a clamping of the individual layers is feasible. If the bonding of the layers is carried out by means of welding or gluing, it is furthermore preferred if this takes place in a linear manner.
  • the stamp intended for bottoming is used as an anvil.
  • the anvil can also serve as a sound reflector for a sonotrode in ultrasonic welding.
  • the anvil can also serve as a support element for the formation of Vorbrüchen. Furthermore, it can also be used as a support element when punching the filling opening. A reverse procedure is possible. So also the punch can be used as a sonotrode.
  • the inventive method thus a folding of the soil is achieved, which leads to a stabilization of the limp material in the soil area leads.
  • the method according to the invention also opens up the possibility of arranging the retaining plate lying on the floor inside.
  • the holding plate is introduced in one operation with the stamp and welded / glued to the bag material.
  • a corresponding opening is introduced into the bottom area.
  • the introduction of this opening can be done either in the not yet formed to the tube web or during the process step a).
  • the introduction of the filling opening can also be carried out in method step b) or even in the not yet formed to the tube web so before step a).
  • FIG. 1 shows the filter bag 1 according to the invention schematically in the state as it results after formation of the tubular bag and closing the free end portion (step a)).
  • the filter bag 1 consists of a composite nonwoven material, as in the WO 01/03802 A1 is described.
  • the filter bag has pre-breaks 3, 4, and 5 that result in the wrinkling depicted.
  • pre-breaking is meant a material compression. This can, for. B. by pressure or pressure and temperature.
  • pre-breaks 3, 4 and 5 creates a folded, tubular filter bag, which is closed at its closed end 2 by a weld 6.
  • the central weld 6 is in the embodiment according to FIG. 1 introduced by thermal welding.
  • the welding has been carried out so that the two superimposed layers of the filter material have been joined together by the weld.
  • the filter bag after Fig. 1 additionally has a pre-break 7. This serves to fold over the soil.
  • FIG. 2 shows the filter bag 1 in a preferred embodiment.
  • the filter bag 1 after the FIG. 2 has a rectangular bottom 9 with two short transverse sides 10 and two longitudinal sides 11.
  • the breakouts with 3, 4 and 5 are called.
  • Vorbrüche 3, 4 and 5 is the Contour of the filter bag 1 determined.
  • Essential to the filter bag according to the invention is now the folding, ie the design of the bottom 9.
  • the bottom 9 now has on its short transverse sides 10 on a folding.
  • the fold is created by superimposing the filter material, as shown in FIG. 1 has been shown.
  • the geometry of the folding is determined by the pre-breaks 3, 4 and 5.
  • a triangular gusset is thus covered under the clamped bottom 9.
  • the formed triangular gusset 8 is in the Fig. 2 represented by dashed lines.
  • the outer edge side leg 12 of the triangle is connected according to the invention with the transverse side 10 of the bottom 9.
  • the transverse side 10 of the bottom 9 is glued to the leg 12 with each other.
  • any other embodiment is contemplated employing other interconnection technologies known in the art.
  • Such a connection can also take place, for example, by means of ultrasonic welding or by clamping.
  • a pre-break 7 is still available. This serves to fold over the bottom in the direction of the longitudinal side of the bag 1.
  • the distance of the pre-break 7 of the central weld 6 therefore corresponds to the width of the bottom 9, so that a complete folding of the bottom 9 is possible.
  • the filter bag 1 is also closed at its free end 13 by a further weld 15.
  • stabilization of the bottom 9 is produced by the folding and the connection of the layers as well as the central weld seam 6 as described above.
  • the big advantage of the invention Filter bag can be seen in the fact that the bottom 9 has enough stability without an additional support plate.
  • the floor still has a through opening 16. This passage opening 16 can then be provided with a holding plate (not shown), so that then the filter bag can be hung in a corresponding holder in the vacuum cleaner.
  • FIG. 3 now shows another way how the folding of the bottom 9 can be made.
  • a central weld 6 is present.
  • a gusset 19 and 20 is formed, which, as shown in the figure, can be folded in two different directions.
  • stabilization of the bottom 9 is achieved by this embodiment.
  • the filter bag after the FIG. 3 has again breaks 3, 4, with which the contour of the filter bag is determined.
  • FIG. 4 shows now using the FIGS. 4a to 4c the sequence of the manufacturing method according to the invention.
  • Fig. 4a schematically shows how a layer of the filter material folded and connected at its edges 22 and 23.
  • the contour of the corresponding filter bag is defined by an unillustrated molding tool.
  • the filter bag is thereby introduced in the first process step, ie in the formation of the tube, the corresponding projections 3, 4 and 5 in the filter bag material.
  • the bonding of the filter material at the edges 22 and 23 takes place cyclically, ie at the in Fig. 4a the position indicated by the term "stop" is used for the welding.
  • the tube thus formed is then continued up to the point marked "Stop 2". At this point, now the closing of the bag. This is preferably carried out by ultrasonic welding.
  • Fig. 4a schematically shows how a layer of the filter material folded and connected at its edges 22 and 23.
  • the contour of the corresponding filter bag is defined by an unillustrated molding tool.
  • the filter bag is thereby introduced in the first process step, ie in the formation of the tube, the corresponding projection
  • the inventive method preferably operates so that the closing of the tube and formation of the central weld 6, the filter bag previously prepared in the operation at its opposite free end 13 is closed. According to the present method, therefore, closing and separating the filter bag takes place in one operation. This can be done with a split welding tool.
  • Fig. 4b shows the process step of the method according to the invention in which the folding of the soil is performed.
  • the folding of the bottom is subsequently carried out after closing the filter bag with the weld 6 at its end 2.
  • Fig. 4a shows the process step of the method according to the invention in which the folding of the soil is performed.
  • the folding of the bottom is subsequently carried out after closing the filter bag with the weld 6 at its end 2.
  • a punch 24 is then inserted from the still open side into the filter bag and guided against the closed end 2.
  • the folding of the base 9 according to the invention is now achieved by specifying the contours 3, 4 and 5. This fold will be while the punch is in its lower position is ( FIG. 4b ) stabilized by connecting the now superimposed layers.
  • the filter bag is further provided to introduce corresponding openings in the filter bag.
  • the opening is preferably introduced into the filter bag material during method step a) or b).
  • the attachment of the holding plate can be z. B. simultaneously with the bottoming or the holding plate is attached later.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Materials (AREA)
  • Making Paper Articles (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Mushroom Cultivation (AREA)
  • Packages (AREA)

Claims (28)

  1. Sac filtrant (1) pour aspirateur comprenant un sac tubulaire (1) en un matériau de sac comportant un matériau composite non-tissé, avec une zone d'extrémité libre fermée (13) et une zone opposée au moins partiellement fermée (2) ainsi qu'une plaque de retenue, dans lequel les arêtes du sac tubulaire sont reliées l'une à l'autre au moins en partie par un cordon de soudure (6) pour former la zone partiellement fermée (2) et dans lequel un fond est formé par réalisation par secteurs de couches de matériau de sac superposées qui sont reliées entre elles au moins en partie.
  2. Sac filtrant selon la revendication 1, caractérisé en ce que le cordon de soudure (6) dans le fond (9) court sur toute la largeur du fond.
  3. Sac filtrant selon la revendication 1 ou 2, caractérisé en ce que les couches superposées formées par secteurs dans le fond (9) par pliage sont reliées par collage et/ou soudage.
  4. Sac filtrant selon la revendication 3, caractérisé en ce qu'il y a un collage et/ou soudage linéaire(s).
  5. Sac filtrant selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le fond (9) est de forme polygonale.
  6. Sac filtrant selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le fond (9) présente une forme rectangulaire.
  7. Sac filtrant selon l'une quelconque des revendications 1 à 6, caractérisé en ce que, en partant du fond (9) vers l'extrémité libre fermée (13), au moins un pli (3, 4, 5) est réalisé dans le matériau de sac.
  8. Sac filtrant selon l'une quelconque des revendications 5 à 7, caractérisé en ce que, en partant des coins respectifs du fond (9) vers l'extrémité libre fermée (13) dans le matériau de sac, des plis (3, 4) sont réalisés dans le matériau de sac.
  9. Sac filtrant selon l'une quelconque des revendications 1 à 8, caractérisé en ce que, en partant du cordon de soudure (6) dans le fond (9), au moins un pli (5) est réalisé dans le matériau de sac jusqu'à l'extrémité libre fermée (13).
  10. Sac filtrant selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'un pli (7) est réalisé dans le matériau de sac parallèlement au cordon de soudure (6) dans le fond (9).
  11. Sac filtrant selon la revendication 10, caractérisé en ce que le pli (7) est réalisé dans le matériau de sac à une distance du cordon de soudure (6) qui correspond sensiblement à la largeur du fond (9).
  12. Sac filtrant selon l'une quelconque des revendications 1 à 11, caractérisé en ce que la plaque de retenue est agencée avec au moins une ouverture de passage (16) sur le fond (9), en le recouvrant au moins en partie.
  13. Sac filtrant selon la revendication 12, caractérisé en ce que la plaque de retenue couvre l'ensemble du fond (9).
  14. Sac filtrant selon l'une quelconque des revendications 1 à 13, caractérisé en ce qu'une plaque de retenue est agencée avec au moins une ouverture de passage sur la surface formée entre l'extrémité libre (13) et l'extrémité partiellement fermée (2) du sac.
  15. Sac filtrant selon la revendication 14, caractérisé en ce que la plaque de retenue est agencée au niveau du fond (9).
  16. Sac filtrant selon l'une quelconque des revendications 1 à 15, caractérisé en ce que la plaque de retenue est reliée au sac filtrant par collage et/ou soudage.
  17. Sac filtrant selon l'une quelconque des revendications 1 à 16, caractérisé en ce que la plaque de retenue est constituée de plastique.
  18. Sac filtrant selon l'une quelconque des revendications 1 à 16, caractérisé en ce que la plaque de retenue est constituée de carton.
  19. Procédé de production d'un sac filtrant selon l'une quelconque des revendications 1 à 18, caractérisé par les étapes de procédé suivantes consistant à :
    a) fabriquer un sac tubulaire et le fermer d'un côté pour former la zone au moins partiellement fermée,
    b) introduire un poinçon du côté ouvert du sac vers l'extrémité fermée du sac de sorte à former un fond par pliage,
    c) relier les couches superposées formées par pliage dans le fond.
  20. Procédé selon la revendication 19, caractérisé en ce que la production du sac tubulaire (étape de procédé a)) se fait de manière cadencée, dans lequel un tuyau est fabriqué en un matériau filtrant et l'extrémité ouverte est fermée.
  21. Procédé selon la revendication 19 ou 20, caractérisé en ce que lors de la fermeture de l'extrémité ouverte (étape de procédé a)), le sac fabriqué auparavant est fermé en même temps à son extrémité libre.
  22. Procédé selon la revendication 21, caractérisé en ce qu'en plus les sacs sont séparés pendant la même opération.
  23. Procédé selon la revendication 22, caractérisé en ce que la séparation se déroule de manière mécanique.
  24. Procédé selon l'une quelconque des revendications 19 à 23, caractérisé en ce que des plis sont réalisés pendant l'étape de procédé a).
  25. Procédé selon la revendication 24, caractérisé en ce que les plis sont réalisés par un outil de formage adapté et/ou par soudage.
  26. Procédé selon l'une quelconque des revendications 19 à 25, caractérisé en ce que le poinçon est utilisé comme réflecteur acoustique pour une sonotrode.
  27. Procédé selon l'une quelconque des revendications 19 à 25, caractérisé en ce que le poinçon est utilisé comme sonotrode pour un réflecteur acoustique.
  28. Procédé selon l'une quelconque des revendications 19 à 27, caractérisé en ce qu'une ouverture est réalisée pendant l'étape de procédé a) ou dans le matériau filtrant formant la bande.
EP04817144A 2003-10-17 2004-10-15 Sac filtrant et procede de production correspondant Active EP1677660B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10348375A DE10348375B4 (de) 2003-10-17 2003-10-17 Filterbeutel und Verfahren zu dessen Herstellung
PCT/EP2004/011648 WO2005034708A1 (fr) 2003-10-17 2004-10-15 Sac filtrant et procede de production correspondant

Publications (2)

Publication Number Publication Date
EP1677660A1 EP1677660A1 (fr) 2006-07-12
EP1677660B1 true EP1677660B1 (fr) 2009-12-16

Family

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EP04817144A Active EP1677660B1 (fr) 2003-10-17 2004-10-15 Sac filtrant et procede de production correspondant

Country Status (9)

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US (1) US8002862B2 (fr)
EP (1) EP1677660B1 (fr)
CN (1) CN1867286B (fr)
AT (1) ATE451862T1 (fr)
AU (1) AU2004280091B2 (fr)
DE (2) DE10348375B4 (fr)
ES (1) ES2338123T3 (fr)
NO (1) NO337579B1 (fr)
WO (1) WO2005034708A1 (fr)

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Also Published As

Publication number Publication date
US8002862B2 (en) 2011-08-23
ATE451862T1 (de) 2010-01-15
CN1867286B (zh) 2010-06-30
CN1867286A (zh) 2006-11-22
DE502004010530D1 (de) 2010-01-28
NO20062164L (no) 2006-07-11
AU2004280091A1 (en) 2005-04-21
DE10348375A1 (de) 2005-05-19
ES2338123T3 (es) 2010-05-04
DE10348375B4 (de) 2006-05-04
US20070175190A1 (en) 2007-08-02
NO337579B1 (no) 2016-05-09
AU2004280091B2 (en) 2010-12-02
WO2005034708A1 (fr) 2005-04-21
EP1677660A1 (fr) 2006-07-12

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