WO2003103798A1 - Verfahren zur herstellung eines rohrfilters durch wickeln sowie rohrfilter - Google Patents
Verfahren zur herstellung eines rohrfilters durch wickeln sowie rohrfilter Download PDFInfo
- Publication number
- WO2003103798A1 WO2003103798A1 PCT/EP2003/001984 EP0301984W WO03103798A1 WO 2003103798 A1 WO2003103798 A1 WO 2003103798A1 EP 0301984 W EP0301984 W EP 0301984W WO 03103798 A1 WO03103798 A1 WO 03103798A1
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- WO
- WIPO (PCT)
- Prior art keywords
- filter
- material web
- winding
- profile cross
- section
- Prior art date
Links
- 238000004804 winding Methods 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 87
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000003466 welding Methods 0.000 claims abstract description 27
- 238000002604 ultrasonography Methods 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 239000012815 thermoplastic material Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 16
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000007596 consolidation process Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
- B01D29/216—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets with wound sheets
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
- B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/10—Filter screens essentially made of metal
- B01D39/12—Filter screens essentially made of metal of wire gauze; of knitted wire; of expanded metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1692—Other shaped material, e.g. perforated or porous sheets
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- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
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- B01D63/061—Manufacturing thereof
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- B01D63/062—Tubular membrane modules with membranes on a surface of a support tube
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- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
- B29C53/607—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels having driving means for advancing the wound articles, e.g. belts, rolls
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- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4329—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms the joint lines being transversal but non-orthogonal with respect to the axis of said tubular articles, i.e. being oblique
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/49—Internally supporting the, e.g. tubular, article during joining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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- B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0654—Support layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0672—The layers being joined by welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0681—The layers being joined by gluing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/069—Special geometry of layers
- B01D2239/0695—Wound layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2265/04—Permanent measures for connecting different parts of the filter, e.g. welding, glueing or moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2275/206—Special forms, e.g. adapted to a certain housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/14—Filters
Definitions
- the invention initially relates to a method for producing a tubular filter by winding a continuously supplied material web made of porous, air-permeable filter material, the edge of the winding of the material web newly generated in the winding process overlapping the outer edge of the last winding created, and the windings permanently connected to one another in the overlap area become.
- the invention further relates to a tubular filter which e.g. can be produced by the method according to the invention.
- filters with filter elements in the form of bag filters which are made of a fabric, e.g. a needle felt or from natural, but also synthetic fibers such as Polyester fiber are made.
- these filter elements are arranged in the space containing the dust-containing gas, the gas flowing through them from the outside inwards, and the dust particles accumulate on the circumference of the filter elements.
- the interior of the filter elements is connected to a clean gas space, which is operated at a lower pressure than the dust gas space, and from which the cleaned gas finally leaves the dust filter.
- the bag filters used in such systems often consist of flaccid, easily deformable materials that have no self-supporting properties.
- support baskets consisting of a metal mesh are drawn into the bag filters. The only task of such support baskets is to prevent the filter elements from collapsing even when the differential pressure between the dust gas and clean gas sides prevails during operation.
- Filter elements are e.g. described in DE 44 40 279 AI. They are made of coiled
- the invention is based on the object of creating a method with which tubular filters wound from material webs can be produced with high rigidity, in a few manufacturing steps and with low quality fluctuations.
- tubular filters of high rigidity can be produced from wound material webs, only a few, possibly even temporally coinciding, manufacturing steps being required to carry out the method, and the method can also be carried out with slight quality fluctuations. It is not necessary to use additional materials such as adhesives.
- the method according to the invention is also particularly suitable for those material webs which are composed of at least two layers of a microporous filter layer and a membrane layer. Such material webs are only of limited suitability for gluing, and such material webs are also not suitable for other joining techniques, such as welding with hot air. Rather, before welding the material webs with hot air, it would first be necessary to first remove one area of the two layers of the material web, namely the microporous membrane layer. This would also be associated with increased production costs and also increased quality risks during production.
- a microporous film made of PTFE (polytetrafluoroethylene) is preferably used as the membrane layer.
- Another embodiment of the method is characterized by the use of a microporous filter layer made of a thermoplastic.
- a microporous filter layer made of a thermoplastic.
- Such plastics have been found to be particularly suitable for welding by ultrasound, the initially microporous structure of the filter layer during the
- a local consolidation of the material web is achieved by this conversion into a homogeneous material structure.
- This consolidation supports that consolidation, as it is already achieved according to the invention in that the two edges of the material web in their overlap regions by acting exclusively on these edges
- a particularly rigid profile cross section along the edges of the material web is achieved by deforming these edges either to a concave or to a convex profile cross section.
- the material web is fed in an oblique orientation to a fixed cylindrical winding mandrel, and that the deformation forces are introduced into the two edges involved via a profile ring rotatably mounted in the winding mandrel.
- Profile ring further winding mandrel has a thread-shaped recessed profile, so that the profiles whose dimensions are lower than the outer diameter of the Winding mandrel, but a continuous removal of the resulting tube is possible.
- the invention is further based on the object of creating a tubular filter of high rigidity which can be produced in a few production steps and with low quality fluctuations.
- Both edges of the material web preferably have a concave or a convex profile cross section.
- the base layer of the material web has a homogeneous material structure in the overlap region, while the base layer has a microporous filter structure over its remaining surface.
- FIG. 1 shows a sectional view of the basic structure of a dust filter in which the tubular filter according to the invention can be used;
- FIG. 2 shows a perspective illustration of the schematic sequence of a winding process in which an inclined material web is wound into a cylindrical filter tube and is welded by ultrasound during winding;
- FIG. 3 shows an enlarged sectional view of the overlap area between two turns of the material web processing to the filter tube;
- FIG. 4 shows another embodiment of the overlap area compared to FIG. 3;
- FIGS. 3 and 4 are yet another embodiment of the overlap area, parts of the winding mandrel and parts of the ultrasound welding device being additionally shown;
- FIG. 5b shows the objects according to FIG. 5a, but during or shortly after the completion of the ultrasonic welding
- Fig. 6 in a greatly shortened representation in a half section the two ends of the filter tube and their connection on the one hand with the open head, and on the other hand with the closed end of the tubular filter, and
- FIG. 7 shows a variant of FIG. 6.
- Fig. 1 shows an industrially used dust filter an overall view.
- the dust filter consists of a vertically aligned, preferably cylindrical filter housing 1, which is divided by a horizontally located partition 2 into a dust gas space 3 below and a clean gas space 4 above.
- Partition plate 2 is designed similar to a tube plate and has a plurality of openings for elongated filter elements inserted therein.
- the filter elements shown are filter tubes 5, which are closed at their lower end at 5a and are open at their upper end.
- the filter tubes 5 are suspended from above in the openings of the partition 2, wherein they are on the top of the
- the effective filter surface is formed by the outer surface of the preferably cylindrical filter tubes 5.
- several filter tubes 5 can be arranged to each other so that they form a group or a filter bundle.
- the dust-containing gas enters the filter via a channel in the filter housing.
- a strong air jet is emitted into the filter tubes 5 from above, so that they are cleaned of the dust or the dust-containing product filtered out on their outer surfaces.
- the tubular filter 5 is produced in an endless winding process, the technical details of which are explained below with reference to FIGS. 2, 3, 4, 5a and 5b. The tube thus produced is then cut to length and closed at one end.
- a fixed, cylindrical winding mandrel 10 is used, the diameter of which corresponds approximately to the inside diameter of the tubular filter 5 produced thereon.
- the filter material in the form of a material web 11 is fed to the winding mandrel 10 by means of a feed device, not shown.
- the material web 11 reaches the lateral surface of the winding mandrel 10 obliquely to the longitudinal axis of the winding mandrel 10.
- This oblique impact continuously creates new turns 12, of which a total of seven turns are shown in FIG. 2.
- a drive belt 13 wrapping around the wound product simultaneously causes a rotation of the product formed, as well as a propulsion of the product formed on the fixed winding mandrel 10 according to the driving arrow 14. In this way, continuous production of tube filters 5 of any length is possible.
- the drive by the drive belt 13 is so matched to the feed angle of the material web 11 on the winding mandrel 10 that adjacent turns 12 of the material web overlap along their edges in overlap regions 15. Accordingly, adjacent turns 12 of the material web are made exclusively in this narrow overlap area 15.
- FIGS 3 and 4 show in two different embodiments and in
- Cross-section considers the overlap area 15 between two adjacent turns 12 of the wound material web.
- both edges 16a, 16b involved are not designed flat in the overlap region 15, like the rest of the material web 11, but are deformed in the form of profile cross sections 17a, 17b.
- the two profile cross sections 17a, 17b lie flush or flat against one another, so that there is a relatively large contact area between the profile cross sections. In the area of these contact areas, the profile cross sections 17a, 17b are connected to one another by ultrasonic welding.
- the ultrasound preferably strikes the two turns 12 involved and to be connected to each other exactly where the still unwound material web 11 has just run onto the outer surface of the winding mandrel 10.
- the first contact of the new material web 1 1 running onto the winding mandrel with the already wound previous turn is therefore immediately followed by ultrasound welding of the overlapping edges.
- the profile cross sections 17a, 17b are also generated in the overlap region when they emerge and thus during the first contact of the new material web 11 with the winding mandrel 10.
- the winding mandrel 10 as will be explained in more detail below, is provided with suitable deformation structures which cover the material web 11 deform in the edge area that comes into contact with the edge area of the last turn.
- Profiled sections 17a, 17b of material webs are characterized in that they extend radially inwards or outwards from the normal plane of the material web 11.
- the actual overlap regions 15 can be flat, as shown in FIG. 3, or have a concave or convex bend in cross section, as shown in FIG. 4. In both cases, however, both profile cross sections 17a, 17b are flush with one another directly, and are welded to one another in this position.
- FIGS. 5a and 5b show in a greatly enlarged illustration the connection of the profile cross sections 17a, 17b in the overlap area.
- the deformation forces acting on the winding mandrel 10 are primarily radial and, according to FIGS. 5a and 5b, lead to a radial widening of the two profile cross sections 17a, 17b involved, their mutual contact not being lost.
- the time of this deformation is precisely when the new material web is on the fixed winding mandrel 10 and, with its inner edge, on whose free running profile ring 21 meets.
- the result is the mutually corresponding deformation of the edges, which can be clearly seen in FIGS. 5a and 5b, the profile cross sections 17a, 17b produced in this way lying radially offset from the respective other regions of the windings or material webs.
- Fiq. 5a shows the state immediately after the newly introduced section of the material web hits the already wound material web.
- Fiq. 5b shows, immediately after that, the ultrasonic welding by means of the welding device 20. This creates a connection between the overlapping profile cross sections 17a, 17b without any welding additives,
- Adhesives or other additives are required. It is to be avoided that the radial pressure of the drive belt 13 deforms or affects the already shaped profile cross sections 17a, 17b again. To avoid this, the position of the drive belt 13 can be chosen so that there is a free space between the individual wraps, so that the freshly profiled overlaps are not smoothed out again after the winding process.
- the material web 11 is constructed in two layers with a base layer 25 with a highly porous structure. As a result of this porosity, the base layer 25 is the primary and thus decisive layer for the filter process. On the base layer 25 there is a much thinner membrane layer 26 for the purpose of surface filtration.
- the base layer 25 consists of a thermoplastic
- the membrane layer 26 made of PTFE (polytetrafluoroethylene).
- Ultrasound welding transforms the originally microporous filter structure of the base layer 25 into a largely homogeneous material structure 27.
- the homogenization of the filter material made of thermoplastic material leads to local solidification and in this way supports the shape-related increase in stiffness in the overlap areas of the tubular filter that has already been explained above.
- the membrane layer 26 made of PTFE film in no way hinders or limits the process of ultrasonic welding. It is therefore not necessary, in particular, to connect the adjacent turns
- Fig. 6 shows a greatly shortened representation of the tubular filter 5 in its entirety and after its completion, i.e. including a closure 5a which closes the filter at its lower end and a filter head 28 with which the tubular filter can be suspended in a corresponding opening in the separating base 2.
- the plug 29 projects with a cylindrical projection 30 from below into the filter tube.
- the cylindrical projection 30 lies over the length L1 on the inner wall of the filter tube, and is welded to the filter tube in the region of this length section, again by the ultrasound welding already described.
- the material for the stopper it is therefore important to ensure that it can be welded to the material of the material web. Materials with comparable temperature resistance as the actual filter tube are advantageous.
- jaws that can be adjusted inwards grip around the length section L1 and in this way provide the necessary fixation and pressure.
- the filter head 28 is also connected to the filter tube 5 which has already been wound and then cut to the desired length and is finally welded to it by ultrasound.
- the welding takes place over a longitudinal section L2, which is formed by a cylindrical extension 31 at one end of the filter head.
- Flanges 32, 33 at the other end of the filter head 28 give it the required hold in the separating base 2 of the dust filter.
- the plug 29 is a hollow body with an opening facing outwards.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Filtering Materials (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0305040-8A BR0305040A (pt) | 2002-06-11 | 2003-02-27 | Processo para a produção de um filtro tubular por meio de enrolamento e um filtro tubular |
AU2003229550A AU2003229550A1 (en) | 2002-06-11 | 2003-02-27 | Method for producing a tubular filter by winding, and tubular filter |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10225909.7 | 2002-06-11 | ||
DE10225909A DE10225909B4 (de) | 2002-06-11 | 2002-06-11 | Verfahren zur Herstellung eines Rohrfilters durch Wickeln sowie Rohrfilter |
EP03000997.1 | 2003-01-17 | ||
EP03000997A EP1371405B1 (de) | 2002-06-11 | 2003-01-17 | Verfahren zur Herstellung eines Rohrfilters durch Wickeln sowie Rohrfilter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003103798A1 true WO2003103798A1 (de) | 2003-12-18 |
Family
ID=29737591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/001984 WO2003103798A1 (de) | 2002-06-11 | 2003-02-27 | Verfahren zur herstellung eines rohrfilters durch wickeln sowie rohrfilter |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003229550A1 (de) |
BR (1) | BR0305040A (de) |
WO (1) | WO2003103798A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006074383A3 (en) * | 2005-01-07 | 2007-02-08 | Mecs Inc | Fiber collecting media strip for a mist eliminator |
US7416576B2 (en) | 2006-01-27 | 2008-08-26 | Mecs, Inc. | Fiber bed assembly and fiber bed therefor |
CN100428983C (zh) * | 2006-03-27 | 2008-10-29 | 黄黎耀 | 管式过滤器膜管的制造方法和装置 |
JP2019202264A (ja) * | 2018-05-23 | 2019-11-28 | アクセプタンスジャパン株式会社 | スクリーン製造用金型 |
Citations (8)
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GB968831A (de) * | 1900-01-01 | |||
US3715036A (en) * | 1971-07-15 | 1973-02-06 | E Hamer | Tubular osmotic membrane |
US4101423A (en) * | 1975-04-04 | 1978-07-18 | Millipore Corporation | Tubular filtration element and method of making it |
JPS5539279A (en) * | 1978-09-14 | 1980-03-19 | Yuasa Battery Co Ltd | Filter element |
EP0046352A1 (de) * | 1980-08-18 | 1982-02-24 | Johnson, Frances Hedrick | Taschenfilter, die Luftdiffusionsröhren umfassen, mit schneckenförmiger Konstruktion |
JPH05263415A (ja) * | 1992-01-17 | 1993-10-12 | Seiji Nagayoshi | 暗渠排水管 |
DE19543954A1 (de) * | 1995-11-25 | 1997-05-28 | Sartorius Gmbh | Druckstabile, poröse polymere Rohrmembran für Rohrmodule und Verfahren zu ihrer Herstellung |
US6077376A (en) * | 1996-10-25 | 2000-06-20 | Membrane Products Kiryat Weizman Ltd. | Process for producing a tubular membrane assembly |
-
2003
- 2003-02-27 WO PCT/EP2003/001984 patent/WO2003103798A1/de not_active Application Discontinuation
- 2003-02-27 BR BR0305040-8A patent/BR0305040A/pt not_active Application Discontinuation
- 2003-02-27 AU AU2003229550A patent/AU2003229550A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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GB968831A (de) * | 1900-01-01 | |||
US3715036A (en) * | 1971-07-15 | 1973-02-06 | E Hamer | Tubular osmotic membrane |
US4101423A (en) * | 1975-04-04 | 1978-07-18 | Millipore Corporation | Tubular filtration element and method of making it |
JPS5539279A (en) * | 1978-09-14 | 1980-03-19 | Yuasa Battery Co Ltd | Filter element |
EP0046352A1 (de) * | 1980-08-18 | 1982-02-24 | Johnson, Frances Hedrick | Taschenfilter, die Luftdiffusionsröhren umfassen, mit schneckenförmiger Konstruktion |
JPH05263415A (ja) * | 1992-01-17 | 1993-10-12 | Seiji Nagayoshi | 暗渠排水管 |
DE19543954A1 (de) * | 1995-11-25 | 1997-05-28 | Sartorius Gmbh | Druckstabile, poröse polymere Rohrmembran für Rohrmodule und Verfahren zu ihrer Herstellung |
US6077376A (en) * | 1996-10-25 | 2000-06-20 | Membrane Products Kiryat Weizman Ltd. | Process for producing a tubular membrane assembly |
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Title |
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PATENT ABSTRACTS OF JAPAN vol. 004, no. 073 (C - 012) 28 May 1980 (1980-05-28) * |
PATENT ABSTRACTS OF JAPAN vol. 018, no. 027 (M - 1543) 17 January 1994 (1994-01-17) * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006074383A3 (en) * | 2005-01-07 | 2007-02-08 | Mecs Inc | Fiber collecting media strip for a mist eliminator |
US7387656B2 (en) | 2005-01-07 | 2008-06-17 | Mecs, Inc. | Fiber collecting media strip for a mist eliminator |
US7758665B2 (en) | 2005-01-07 | 2010-07-20 | Mecs, Inc. | Fiber collecting media strip for a mist eliminator |
AP2371A (en) * | 2005-01-07 | 2012-03-02 | Mecs Inc | Fiber collecting media strip for a mist eliminator. |
US7416576B2 (en) | 2006-01-27 | 2008-08-26 | Mecs, Inc. | Fiber bed assembly and fiber bed therefor |
CN100428983C (zh) * | 2006-03-27 | 2008-10-29 | 黄黎耀 | 管式过滤器膜管的制造方法和装置 |
JP2019202264A (ja) * | 2018-05-23 | 2019-11-28 | アクセプタンスジャパン株式会社 | スクリーン製造用金型 |
JP7137823B2 (ja) | 2018-05-23 | 2022-09-15 | アクセプタンスジャパン株式会社 | スクリーン製造用金型 |
Also Published As
Publication number | Publication date |
---|---|
BR0305040A (pt) | 2004-11-09 |
AU2003229550A1 (en) | 2003-12-22 |
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