DE2529515C3 - Poröses Rohr aus Faservliesmaterial - Google Patents
Poröses Rohr aus FaservliesmaterialInfo
- Publication number
- DE2529515C3 DE2529515C3 DE2529515A DE2529515A DE2529515C3 DE 2529515 C3 DE2529515 C3 DE 2529515C3 DE 2529515 A DE2529515 A DE 2529515A DE 2529515 A DE2529515 A DE 2529515A DE 2529515 C3 DE2529515 C3 DE 2529515C3
- Authority
- DE
- Germany
- Prior art keywords
- tear
- pipe
- porous tube
- tube
- open
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 title claims description 5
- 239000012528 membrane Substances 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 238000005374 membrane filtration Methods 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000059549 Borneo rubber Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
- B01D69/107—Organic support material
- B01D69/1071—Woven, non-woven or net mesh
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
- B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
- B29C65/7888—Means for handling of moving sheets or webs
- B29C65/7894—Means for handling of moving sheets or webs of continuously moving sheets or webs
-
- 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
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
- B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
- B29C66/712—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 the composition of one of the parts to be joined being different from the composition of the other part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/729—Textile or other fibrous material made from plastics
- B29C66/7294—Non woven mats, e.g. felt
-
- 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
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
- B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
- B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
- B29K2001/08—Cellulose derivatives
- B29K2001/12—Cellulose acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2313/00—Use of textile products or fabrics as reinforcement
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Die Erfindung betrifft ein poröses Rohr aus Faservliesmaterial, dessen Innenseite mit einer Membran
zur Membranfiltration vrrsehen oder für deren Anbringung vorgesehen ist.
Rohre dieser Art mit innenseitig aufgebrachter
Membran sind während Filtrationsvorgängen in Stützrohren angeordnet, die azm ho! ,n Druck standhalten,
unter dem die zu reiivgende Flüssigkeit in das Rohrinnere eingeleitet wird. Die.· / hohe Innendruck
preßt das Rohr an die Innenwandung des Stützrohres an
und bereichsweise auch in Öffnungen im Stülzrohr hinein, die zur Ableitung des Permeats vorgesehen sind.
Dadurch ergibt sich ein starkes Haften des Rohres im Stützrohr, so daß es schwierig ist. für einen Membranwechsel
das Rohr aus dem .Stützrohr /u entfernen. In
der Praxis erfolgt ein derartiges Entfernen in einem zeitraubenden Vorgang durch Gewaltanwendung unJ
unter Zerstörung des Rohres.
Der Erfindung liegt die Aufgabe zugrunde, ein Rohr der eingangs genannten Art zu schaffen, das bei
einfacher Ausbildung schnell und leicht a«js dem Stützrohr entfernt werden kann, wenn seine Membran
verbraucht ist. Hierzu ist das Rohr nach der Erfindung dadurch gekennzeichnet, daß
a) das poröse Rohr mit einem Aufreißglied versehen ist. das einen hakenförmigen Teil zum Aufreißen
des Rohres aufweist, der über einen Faden mit einem Zugring verbunden ist oder
b) als Aufreißglied eine Längsschweißnaht vorgesehen ist. die durch Ultraschallschweißen bei
einander überlappenden oder aneinanderstoßenden Randzonen gebildet ist. Bei dem porösen Rohr
nach a) kann das Aufreißglied zwischen zwei benachbarten Lagen des Faservliesmaterials des
Rohres eingebettet sein.
Mit Hilfe eines derartigen Aufreißgliedes kann das Rohr schnell und leicht von einem Ende her zum
anderen Ende hin aufgerissen und anschließend mühelös aus seinem Stützrohr herausgezogen werden. Dies gilt
sowohl für die Ausgestaltung nach a), bei der der hakenförmige Teil durch das Faservliesmaterial auftren
■>"
nend hindurch bewegt wird, als auch für die besonders herstellungsgünstige Ausgestaltung nach b), bei der die
durch Ultraschallschweißen gebildete Längsschweißnaht einen sehr schmal ausführbaren und präzise
begrenzten Streifenbereich hoher Verfestigung bildet, der in einer Schälbewegung als Ganges ausreißbar ist.
Aus der CH-PS 5 00 744 ist zwar als Träger für eine Membran zur Membranfiltration bereits ein biegsamer
Schlauch aus einem porösen Faservliesband uekannt, dessen Ränder zur Bildung einer längsverlaufenden
Schlauchnaht aneinanderstoßend oder sich gegenseitig überlappend miteinander verschweißt sein können. Die
Längsschweißnaht dient jedoch nur der Randverbindung und ist nicht durch Ultraschallschweißen gebildet.
Ein Aufreißglied ist bei einem biegsamen Schlauch als Träger für die Membran weder erforderlich noch
sinnvoll, da es wegen der Nachgiebigkeit der Schlauchnaht aus dieser auch nicht separat ausreißbar is'
Bei einem porösen Rohr der eingangs genannten Art, das durch schraubenlinienförmiges Aufwickeln eines
Faservliesbandes und Verschweißen aneinanderstoßender oder einander überlappender Randbereiche gebildet
ist, ist es weiterhin bekannt, die schraubenlinienförmige Schweißnaht durch Ultraschallschweißen zu
erzeugen. Auch hier bildet die Schweißnaht jedoch lediglich eine Verbindungsnaht und wegen des schraubenlinienförmigen
Verlaufes der Schweißnaht in der Rohrwandung ist sie auch als Aufreißglied nicht
verwendbar, da nur ein für ein Aufreißen nicht ausreichender Bruchteil einer längs des Rohres
gerichteten Zugkraft als Aufreißkraft in die Schweißnaht eintragbar ist.
Nachstehend werden mehrere Ausführungsbeispiele in Verbindung mit der Zeichnung näher erläutert. In der
Zeichnung zeigt
F i g. 1 einen schematischen Längsschnitt durch eine
erste Ausführung eines Rohres nach der Erfindung.
F ι g. I einen Längsschnitt durch eine zweite Rohrausführung,
Fig. 3 einen schematischen Querschnitt durch eine
drille Rohrausfuhrung.
Fig. 4 eine perspektivische Ansicht eines Rohres nach F ι g. 3.
F ι g. 5 eine Vorrichtung /ur Herstellung eines erfindungsgemaß<-n Rohres.
F ig. 6 und 7 Lm/elheilen betreffend die Herstellung
von Längsschweißnähten.
F ι g. I zeigt ein poröses Rohr 1 aus einem Faservlies
aus Polyesterfasern, an dessen Innenseite erne ZeIIuIosea/eiai-Membran
2 befestigt ist. Diese Anordnung ist in einem Siiii/rohr 3 aus thermoplastischem Material
mn Öffnungen 4 untergebracht, durch die das Permeal.
ddS durch die Membran hindurchgegangen ist abgeführt
wird.
Das Rohr 1 ist mn einem Aufreißglied 5 verschen, das
bei der Ausführung nach Fig. 1 einen hakenförmigen
Teil 6 /um Aufreißen des Rohres 1 aufweist, der über
einen F aden 7 mit einem Zugring 8 verbunden ist.
Bei der Ausfuhrung nach F ι g. 2 besteht das Rohr I
aus /wci Faservliesschichien la und \h. /. B. aus
Polyestcrfascrpapier, zwischen denen das AufrciBglied
S gemäß F i g, I eingebettet ist.
F i g, 3 zeigt eine Ausführung mit einem Faservlies aus
Polyester, bei der das Aufreißglied 5 aus einer durch Ultraschallschweißen gebildeten Längsschweißnaht des
Rohres 1 besteht. Dieses Aufreißglied 5 kann sowohl bei einem Rohr aus einschichtigem Faservlies als auch bei
einem solchen mit zwei Schichten 1 α und 1 b vorgesehen
sein. Fig.4 zeigt das Rohr 1 nach Fig.3 in
perspektivischer Ansicht.
Fig.5 veranschaulicht eine Vorrichtung beim Herstellen
eines Rohres 1 mit einer LängsschweiUnaht durch Ultraschallschweißen. Diese, nicht Gegenstand
der Erfindung bildende Vorrichtung umfaßt eine Vorratsrolle 15 für eine Faservliesbahn 18, die über eine
Abstützung 16 mit Klemmstücken 17 zu einem stationären hohlen zylindrischen Dorn 19 gefördert und
an dieser, von Führungsorganen 9 angedrückt wird. Über dem Dorn 19 ist ein Ultraschallschweißorgan 10,
10a, IQb vorgesehen, rn.it dem die das Aufreißglied 5
bildende Längsschweißnaht bei überlappenden (Fig.6)
oder voreinanderstoßenden (Fig.7) Randzonen 5a, 56
der Faservliesbahn 18 v/ährend deren Förderung über den Dorn 19 erzeugt wird.
Zur Förderung des Rohres 1 sind Förderorgane 11, z. B. Gummibänder, vorgesehen. Zur Membranbildung
kann ein eine flüssige Membranmasse, z. B. Zelluloseazetat, enthaltender Behälter 12 vorgesehen sein, dessen
Auslaßleitung 13 in das Rohr 1 einmündet Um die richtige Dicke der Rohrmembran zu erhalten, ist ein
torpedoförmiger Körper 14 im Inneren des Rohres 1 gehalten.
Hierzu 2 Blatt Zeichnungen
Claims (2)
- Patentansprüche:L Poröses Rohr aus Faservliesmaterial, dessen Innenseite mit einer Membran zur Membranfiltration versehen oder für deren Anbringung vorgesehen ist, dadurch gekennzeichnet, daßa) das poröse Rohr (1) mit einem Aufreißglied (5) versehen ist, das einen hakenförmigen Teil (6) zum Aufreißen des Rohres (1) aufweist, der über einen Faden (7) mit einem Zugring (8) verbunden ist, oderb) als Aufreißglied eine Längsschweißnaht vorgesehen ist, die durch Ultraschallschweißen bei einander überlappenden oder aneinanderstoßenden Randzonen (5a, Sb)gebildet ist.
- 2. Poröses Rohr nach Anspruch 1, dadurch gekennzeichnet, daß bei dem porösen Rohr nach a) das Aufreißglied (5) zwischen zwei benachbarten Lagen (la, ί/jjdes Faservüesmaterialsdes Rohres (1) eingebettet isLίο
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7409029.A NL162845C (nl) | 1974-07-03 | 1974-07-03 | Werkwijze voor het vervaardigen van een inwendig van een membraan voorziene filtratiemembraan- vezelvliesbuis. |
NL7412910.A NL165385C (nl) | 1974-09-30 | 1974-09-30 | Dunwandige vezelvliesbuis. |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2529515A1 DE2529515A1 (de) | 1976-01-22 |
DE2529515B2 DE2529515B2 (de) | 1980-06-19 |
DE2529515C3 true DE2529515C3 (de) | 1981-02-19 |
Family
ID=26645011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2529515A Expired DE2529515C3 (de) | 1974-07-03 | 1975-07-02 | Poröses Rohr aus Faservliesmaterial |
Country Status (16)
Country | Link |
---|---|
US (1) | US4022249A (de) |
JP (1) | JPS5850762B2 (de) |
AU (1) | AU505033B2 (de) |
BE (1) | BE830945A (de) |
BR (1) | BR7504209A (de) |
CA (1) | CA1057207A (de) |
DE (1) | DE2529515C3 (de) |
EG (1) | EG11972A (de) |
ES (1) | ES439070A1 (de) |
FR (1) | FR2276860A1 (de) |
GB (2) | GB1519992A (de) |
IN (1) | IN144602B (de) |
IT (1) | IT1040791B (de) |
MX (1) | MX3054E (de) |
OA (1) | OA05047A (de) |
SE (2) | SE403710B (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS549168A (en) * | 1977-06-23 | 1979-01-23 | Daicel Chem Ind Ltd | Method of producing sleeve with filter membrane |
US4274244A (en) * | 1979-05-18 | 1981-06-23 | General Electric Company | Method and apparatus for sealing polyester film in mine bolt capsule |
JPS5897959A (ja) * | 1981-12-07 | 1983-06-10 | Canon Inc | 変倍像形成装置 |
NL8105621A (nl) * | 1981-12-14 | 1983-07-01 | Wafilin Bv | Vezelvliesbuis, alsmede werkwijze en inrichting voor zijn vervaardiging. |
GB2128709A (en) * | 1982-10-16 | 1984-05-02 | C J Cawte | Drainage pipes |
JPS60127075A (ja) * | 1983-11-18 | 1985-07-06 | Kawasaki Heavy Ind Ltd | 内燃機関の排気弁 |
JPS60182865A (ja) * | 1984-02-29 | 1985-09-18 | Sanyo Electric Co Ltd | フアクシミリ装置 |
US4837161A (en) * | 1985-03-04 | 1989-06-06 | The Dow Chemical Company | Method for reagent addition to a flowing liquid carrier stream |
US4715217A (en) * | 1985-06-06 | 1987-12-29 | The Dow Chemical Company | Determining organic compounds using a membrane |
JPS63129780A (ja) * | 1986-11-20 | 1988-06-02 | Canon Inc | 画像通信装置 |
EP0478497B1 (de) * | 1990-09-19 | 1994-03-30 | Sulzer Chemtech AG | Statischer Mischer mit rohrartigem Gehäuse |
NL9300072A (nl) * | 1993-01-14 | 1994-08-01 | Stork Friesland Bv | Samengestelde buis voor membraanfiltratie. |
GB9410429D0 (en) * | 1994-05-25 | 1994-07-13 | Pci Membrane Systems Ltd | Filtration |
US20060180733A1 (en) * | 2005-01-28 | 2006-08-17 | Van De Camp Johannes W | Transparent construction form |
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 |
GB2449846A (en) * | 2007-05-29 | 2008-12-10 | Psi Global Ltd | A coalescing filter |
ITTO20120337A1 (it) * | 2012-04-17 | 2013-10-18 | Sidel Spa Con Socio Unico | Metodo e unita' per formare spezzoni tubolari di materiale in forma di nastro, in particolare in una etichettatrice |
NL2021992B1 (en) * | 2018-07-06 | 2020-01-16 | Berghof Membrane Tech Gmbh | Method and tubular membrane for performing a forward osmosis processing |
WO2020009584A1 (en) * | 2018-07-06 | 2020-01-09 | Berghof Membrane Technology GmbH | Method and tubular membrane for performing a forward osmosis processing |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677165A (en) * | 1950-10-27 | 1954-05-04 | Sonoco Products Co | Concrete form and method of molding concrete columns therewith |
US2968124A (en) * | 1957-05-10 | 1961-01-17 | Milo G Coplen | Plant container |
US3312250A (en) * | 1963-06-06 | 1967-04-04 | Minnesota Mining & Mfg | Insulating sleeves |
US3457170A (en) * | 1966-04-14 | 1969-07-22 | Havens Intern | Solvent separation process and apparatus |
DE1192394B (de) * | 1968-02-07 | 1965-05-06 | Fmc Corp | Vorrichtung zur Herstellung von armierten Kunststoffrohren |
GB1325673A (en) * | 1969-07-16 | 1973-08-08 | Atomic Energy Authority Uk | Reverse osmosis membrane assemblies |
US3642564A (en) * | 1970-03-06 | 1972-02-15 | Allegheny Ludlum Steel | Strippable protective film |
-
1975
- 1975-06-30 US US05/591,702 patent/US4022249A/en not_active Expired - Lifetime
- 1975-07-01 SE SE7507551A patent/SE403710B/xx unknown
- 1975-07-01 FR FR7520588A patent/FR2276860A1/fr active Granted
- 1975-07-01 IT IT50312/75A patent/IT1040791B/it active
- 1975-07-02 GB GB396/78A patent/GB1519992A/en not_active Expired
- 1975-07-02 ES ES439070A patent/ES439070A1/es not_active Expired
- 1975-07-02 DE DE2529515A patent/DE2529515C3/de not_active Expired
- 1975-07-02 GB GB27860/75A patent/GB1519991A/en not_active Expired
- 1975-07-02 EG EG383/75A patent/EG11972A/xx active
- 1975-07-02 AU AU82663/75A patent/AU505033B2/en not_active Expired
- 1975-07-03 MX MX100179U patent/MX3054E/es unknown
- 1975-07-03 CA CA230,650A patent/CA1057207A/en not_active Expired
- 1975-07-03 JP JP50081476A patent/JPS5850762B2/ja not_active Expired
- 1975-07-03 BR BR5388/75D patent/BR7504209A/pt unknown
- 1975-07-03 BE BE157928A patent/BE830945A/xx not_active IP Right Cessation
- 1975-07-03 OA OA55547A patent/OA05047A/xx unknown
- 1975-09-17 IN IN1779/CAL/1975A patent/IN144602B/en unknown
-
1978
- 1978-05-11 SE SE7805442A patent/SE424961B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
EG11972A (en) | 1978-09-30 |
ES439070A1 (es) | 1977-08-16 |
DE2529515A1 (de) | 1976-01-22 |
JPS5850762B2 (ja) | 1983-11-12 |
US4022249A (en) | 1977-05-10 |
FR2276860A1 (fr) | 1976-01-30 |
GB1519991A (en) | 1978-08-02 |
SE7507551L (sv) | 1976-01-05 |
AU8266375A (en) | 1977-01-06 |
IT1040791B (it) | 1979-12-20 |
SE403710B (sv) | 1978-09-04 |
JPS5133777A (de) | 1976-03-23 |
CA1057207A (en) | 1979-06-26 |
OA05047A (fr) | 1980-12-31 |
AU505033B2 (en) | 1979-11-08 |
BE830945A (nl) | 1976-01-05 |
MX3054E (es) | 1980-03-06 |
FR2276860B1 (de) | 1980-08-08 |
IN144602B (de) | 1978-05-20 |
BR7504209A (pt) | 1976-07-06 |
SE424961B (sv) | 1982-08-23 |
DE2529515B2 (de) | 1980-06-19 |
GB1519992A (en) | 1978-08-02 |
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