NO134513B - - Google Patents
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- Publication number
- NO134513B NO134513B NO2868/68A NO286868A NO134513B NO 134513 B NO134513 B NO 134513B NO 2868/68 A NO2868/68 A NO 2868/68A NO 286868 A NO286868 A NO 286868A NO 134513 B NO134513 B NO 134513B
- Authority
- NO
- Norway
- Prior art keywords
- profile
- groove
- winding
- cooled
- bead
- Prior art date
Links
- 238000004804 winding Methods 0.000 claims description 16
- 239000011324 bead Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 9
- 238000003825 pressing Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 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
- 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
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0244—Cooling
-
- 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
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
-
- 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
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
-
- 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
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/567—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
- B29C65/568—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined using a swaging operation, i.e. totally deforming the edge or the rim of a first part to be joined to clamp a second part 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
-
- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1242—Tongue and groove joints comprising interlocking undercuts
- B29C66/12421—Teardrop-like, waterdrop-like or mushroom-like interlocking undercuts
-
- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1242—Tongue and groove joints comprising interlocking undercuts
- B29C66/12423—Dovetailed interlocking undercuts
-
- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
- B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
-
- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
- B29C66/12461—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being rounded, i.e. U-shaped or C-shaped
-
- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
- B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
-
- 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
- B29C66/41—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
-
- 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
- B29C66/73—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
-
- 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
- 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
- B29C66/834—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
- B29C66/83411—Roller, cylinder or drum types
- B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H81/00—Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
- B65H81/06—Covering or wrapping elongated cores
- B65H81/08—Covering or wrapping elongated cores by feeding material obliquely to the axis of the core
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
-
- 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
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
- B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces 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
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B29C65/4895—Solvent bonding, i.e. the surfaces of the parts to be joined being treated with solvents, swelling or softening agents, without 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
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/58—Snap connection
-
- 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
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- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49863—Assembling or joining with prestressing of part
- Y10T29/4987—Elastic joining of parts
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49863—Assembling or joining with prestressing of part
- Y10T29/49876—Assembling or joining with prestressing of part by snap fit
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53657—Means to assemble or disassemble to apply or remove a resilient article [e.g., tube, sleeve, etc.]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
Oppfinnelsen vedrører en fremgangsmåte til fremstilling av et viklingsrør av termoplastisk kunststoff, ved hvilken et profilbånd av termoplastisk kunststoff, hvis ene båndkant har et steg og hvis andre båndkant har en vulst som er anordnet i et spor, vikles opp skruelinjeformet om en av-støtning, hvorved steget til den forangående vinding kontinuerlig innføres i sporet til det tilførte profilbånd. The invention relates to a method for the production of a winding tube of thermoplastic plastic, in which a profile band of thermoplastic plastic, one band edge of which has a step and the other band edge of which has a bead which is arranged in a groove, is wound up helically around a stop, whereby the step of the preceding winding is continuously introduced into the groove of the added profile band.
Det er tidligere kjent en fremgangsmåte til fremstilling av et viklingsrør av et profilbånd, hvis ene side har en nøkkelhullformet spordel og ved hvis andre side det er utformet en stegdel som svarer til denne spordel. Forbindelsen mellom spor og steg oppnås ved inntrykning av stegdelen i den elastisk utvidede spordel som etter opphevningen av utvidelsen lukker seg rundt steget. Den således oppnådde elastiske fastholding kan forbedres ved hjelp av et klebestoffmellomsjikt mellom stegoverflate og sporoverflate. There is previously known a method for producing a winding tube from a profile band, one side of which has a keyhole-shaped track part and on the other side of which a stepped part is formed which corresponds to this track part. The connection between track and step is achieved by pressing the step part into the elastically expanded track part, which closes around the step after the expansion is lifted. The elastic retention thus achieved can be improved by means of an adhesive intermediate layer between the step surface and the track surface.
Videre er det kjent til forbindelse av profilbånd Furthermore, it is known to connect profile bands
på en båndkant å anordne flere steg med komplimentaere utspar-inger i vulsten på den andre båndkant og derved å øke den oppnådde elastiske fastholding. Videre er det også kjent å utfor-me steget som horisontalt, med en hake ved den fremre ende ut-styrt forlengelse av et profilbånd som blir innskjøvet i et likeledes horisontalt utformet spor under elastisk deformering av dette spor. on one band edge to arrange several steps with complementary recesses in the bead on the other band edge and thereby increase the achieved elastic retention. Furthermore, it is also known to design the step as a horizontal, with a hook at the front end equipped extension of a profile band which is pushed into a similarly horizontally designed groove during elastic deformation of this groove.
Fremstillingen av viklingsrør ved elastiske forbind-elser mellom spor og steg har den ulempe at det bare kan velges meget bestemte profilformer ved hvilke en elastisk innpressing akkurat enda er mulig. Den elastiske forbindelsestype har videre' den ulempe at de således fremstilte rør ikke er torsjons-stive. For å oppnå en god avtetning av forbindelsesstedet er det ubetinget nødvendig å innføre tetningsmidler mellom spor og steg, f. eks. i form av et bindemiddel. The production of coil tubes by elastic connections between slots and steps has the disadvantage that only very specific profile shapes can be selected in which an elastic pressing is still possible. The elastic connection type also has the disadvantage that the pipes produced in this way are not torsionally rigid. In order to achieve a good sealing of the connection point, it is absolutely necessary to introduce sealants between the track and the step, e.g. in the form of a binder.
Til slutt er det dessuten kjent å fremstille rør av polyetylenbånd ved vikling, hvorved båndene presses mot hverandre i det termoplastiske område og således sammensveises til et rør. Fremstillingen av slike rør er komplisert, og stivhe-ten til rør fremstilt på denne måten er i mange tilfeller util-strekkelig. Finally, it is also known to produce pipes from polyethylene tapes by winding, whereby the tapes are pressed against each other in the thermoplastic area and thus welded together to form a pipe. The production of such pipes is complicated, and the stiffness of pipes produced in this way is in many cases insufficient.
Den oppgave som ligger til grunn for oppfinnelsen er å tilveiebringe en fremgangsmåte til fremstilling av vik-lingsrør med hvilken det på enkel måte kan oppnås en meget fast og tett rørkonstruksjon. The task that forms the basis of the invention is to provide a method for the production of winding pipes with which a very firm and tight pipe construction can be achieved in a simple way.
Dette blir ifølge oppfinnelsen oppnådd ved en fremgangsmåte av den innledningsvis nevnte type ved at det tilførte profilbånd oppmykes til en tilstand i det øvre termoelastiske område og etter innføringen av steget i sporet kjøles ved hjelp av det allerede avkjølte steg og fortrinnsvis også ekstra trykkluft. According to the invention, this is achieved by a method of the type mentioned at the outset in that the supplied profile band is softened to a state in the upper thermoelastic area and, after the introduction of the step in the groove, is cooled with the aid of the already cooled step and preferably also additional compressed air.
Da mykningen av profilbåndet ligger i det øvre termoelastiske område, må ved anvendelsen av prefabrikerte profilbånd båndet oppvarmes tilsvarende. Blir profilbåndet tilført mens det kommer direkte fra ekstruderen, må det nødvendigvis sørges for en tilsvarende avkjøling. Avkjølingen av den fremstilte forbindelse kan skje utenfra, hensiktsmessig imidlertid innenfra, idet ifølge et videre trekk ved oppfinnelsen steget før innføringen i sporet avkjøles til romtemperatur. As the softening of the profile tape is in the upper thermoelastic area, when using prefabricated profile tapes, the tape must be heated accordingly. If the profile strip is supplied while it is coming directly from the extruder, a corresponding cooling must necessarily be ensured. The cooling of the manufactured compound can take place from the outside, however suitably from the inside, as according to a further feature of the invention the step before introduction into the groove is cooled to room temperature.
Det ifølge fremgangsmåten i samsvar med oppfinnelsen fremstilte rør har på grunn av krympningsfestingen av spor og steg en fast og tett struktur, danner i sitt indre en glatt strømningskanal og er vidtgående fri for viklingsspenninger. The tube produced according to the method in accordance with the invention has, due to the shrink fit of grooves and steps, a firm and dense structure, forms a smooth flow channel in its interior and is largely free of winding stresses.
Det fra ekstruderen kommende profilbånd blir av-kjølt så langt, eller hvis det prefabrikeres oppvarmet så langt i en oppvarmingskanal til det har nådd en i det øvre termoelastiske område liggende oppmykningstilstand. Ved hjelp av en føringsinnretning blir det på en profilside utformede spor, som hensiktsmessig er svalehaleformet, utvidet. Umiddel-bart deretter blir profilbåndet påført på avstøtningen, f. eks. en roterende trommel, hvorved det utvidede spor til den ene profilkant anordnes rundt steget til den andre profilkant. Fastpressingsvalser trykker båndet mot overflaten til den først sylindriske trommel, hvorved det samtidig foretas en kjøling utenfra ved hjelp av trykkluft. Kjølingen skjer hensiktsmessig slik at steget til det påførte profilbånd er avkjølt til romtemperatur før forbindelsen, mens vulsten holdes på en tempera-tur som svarer til det øvre termoelastiske område. Trykkluft-kjølingen akselererer avkjølingen til forbindelsen mellom spor og steg, slik at det oppnås en fast krympeforbindelse. Da ved avkjølingen hele røret krymper noe, utformes hensiktsmessig den til den sylindriske trommeldel tilsluttede trommeldel kon-isk avsmalnende, slik at det ferdige rør automatisk løper av trommelen.. Isteden for utvidelsen av sporet kan eventuelt også steget ved sammenpressing deformeres elastisk slik at det etter innføringen i sporet igjen inntar sin opprinnelige form og ligger an mot sporets indre vegger, som ved krympingen slutter seg fast rundt dette. Isteden for et spor og et steg på hver side av profilbåndet kan det i en vulst være anordnet flere ved siden.av hverandre liggende spor og på den andre profil-båndside tilsvarende mange og tilpassede stegdeler, hvorved det oppnås en bedre sammenfesting av røret. Rørstrukturen kan dessuten forbedres ved at det på den foran omtalte måte forbin-des flere over hverandre anordnede rørvegglag med hverandre. Forbindelsesvulsten som omgir røret skruélinjeformet øker samtidig rørets stivhet. The profile strip coming from the extruder is cooled to the point, or if it is pre-fabricated, heated to the point in a heating channel until it has reached a state of softening lying in the upper thermoelastic area. With the aid of a guide device, grooves formed on a profile side, which are suitably dovetail-shaped, are widened. Immediately afterwards, the profile tape is applied to the buffer, e.g. a rotating drum, whereby the extended groove of one profile edge is arranged around the step of the other profile edge. Pressing rollers press the strip against the surface of the first cylindrical drum, whereby at the same time cooling is carried out from the outside using compressed air. The cooling takes place appropriately so that the step to the applied profile tape is cooled to room temperature before the connection, while the bead is kept at a temperature that corresponds to the upper thermoelastic area. The compressed air cooling accelerates the cooling of the connection between track and step, so that a firm crimp connection is achieved. As the entire pipe shrinks somewhat during cooling, the drum part connected to the cylindrical drum part is designed to taper conically, so that the finished pipe automatically runs off the drum. Instead of expanding the groove, the step can possibly also be elastically deformed by compression so that after the introduction into the groove again assumes its original shape and rests against the inner walls of the groove, which, during shrinkage, adhere firmly around this. Instead of a groove and a step on each side of the profile strip, a bead can have several adjacent grooves and on the other side of the profile strip a corresponding number of adapted step parts, whereby a better connection of the pipe is achieved. The pipe structure can also be improved by connecting several pipe wall layers arranged one above the other in the manner mentioned above. The connection bead that surrounds the tube in a helical shape simultaneously increases the tube's stiffness.
Oppfinnelsen skal i det følgende nærmere forklares ved hjelp av utførelseseksempler som er fremstilt på tegningene, som viser: fig. 1 et skjematisk riss av trommelen med fastpressingsvalser og- av kjølingsinnretningen, sett i aksial ret-ning, In the following, the invention will be explained in more detail with the help of exemplary embodiments which are shown in the drawings, which show: fig. 1 a schematic view of the drum with pressing rollers and of the cooling device, seen in axial direction,
fig. 2 et skjematisk riss av en del av innretningen, delvis i snitt med et allerede ferdig fremstilt rørstykke, fig. 2 a schematic drawing of a part of the device, partly in section with an already finished piece of pipe,
sett i perspektiv, put into perspective,
fig. 3-6 det profilerte bånd' i de forskjellige trinn under viklingsprosessen, sett i snitt, fig. 3-6 the profiled band' in the various stages during the winding process, seen in section,
fig. 7 et ferdig rør, sett fra siden, fig. 7 a finished pipe, seen from the side,
fig. 8 et profil av båndet, hvor det over hele bred-den avvekslende er tilformet steg og spor, fig. 8 a profile of the belt, where steps and grooves are formed over the entire width of the alternating,
fig. 9 den samme profil som på fig. 8, termoelastisk deformert, kort før viklingsprosessen, fig. 9 the same profile as in fig. 8, thermoelastically deformed, shortly before the winding process,
fig. 10 et utsnitt av veggen til et ferdig viklings-rør, fig. 10 a section of the wall of a completed winding tube,
fig. 11 et tverrsnitt gjennom et profilert profilbånd. fig. 11 a cross-section through a profiled profile band.
I det følgende blir de enkelte figurer forklart. På fig. 1 blir trommelen betegnet med 1, fastpressingsrullene med 2, kjøleinnretningen med 3 og det profilerte bånd med 4. In the following, the individual figures are explained. In fig. 1, the drum is denoted by 1, the pressing rollers by 2, the cooling device by 3 and the profiled belt by 4.
På fig. 2 ser man profilbåndet 4 med steg 5 og vulst 6 i snitt, ovenfor hvilket fastpressingsrullen 2 er anordnet med utskjæringer 7 over vulsten 6. De stiplede linjer viser tydelig hvordan steg og spor føres sammen, etter at på forhånd sporet ved hjelp av en dor 8 og en føringsinnretning 9 er blitt utvidet. Fig. 3 viser et lengdesnitt gjennom en del av veggen til viklingsrøret med to forbindelsessteder med steg 5 og vulst 6. In fig. 2 the profile band 4 with step 5 and bead 6 can be seen in section, above which the pressing roller 2 is arranged with cutouts 7 above the bead 6. The dashed lines clearly show how the step and groove are brought together, after the groove has been previously made using a mandrel 8 and a guide device 9 has been extended. Fig. 3 shows a longitudinal section through part of the wall of the winding pipe with two connection points with step 5 and bead 6.
På fig. 4 er det vist et lengdesnitt gjennom en del av rørveggen i den tilstand hvor steget til det profilerte bånd etter å ha forlatt en klebedyse i det termoelastiske område blir elastisk deformert, og fig. 5 viser hvordan sporet i vulsten (til høyre på tegningen) i det termoelastiske område elastisk blir utvidet ved hjelp av doren 8 på føringsinnretnin-gen 9> Fig. 6 viser et lengdesnitt gjennom en del av veggen til viklingsrøret. De tykke linjer betegner de steder hvor det for avtetting av et rør ved viklingsprosessen blir innført klebemidler eller oppløsningsmidler. In fig. 4 shows a longitudinal section through a part of the pipe wall in the state where the step of the profiled band after leaving an adhesive nozzle in the thermoelastic area is elastically deformed, and fig. 5 shows how the groove in the bead (to the right of the drawing) in the thermoelastic area is elastically expanded by means of the mandrel 8 on the guide device 9> Fig. 6 shows a longitudinal section through part of the wall of the winding tube. The thick lines denote the places where adhesives or solvents are introduced to seal a pipe during the winding process.
Fig. 8 og 10 viser profilbånd med hvis hjelp det er mulig å vikle rør med forskjellige veggtykkelser. Herved be-nyttes det samme sammenhakningsprinsipp som ved profilbåndet som er vist på fig. 3- Således blir også stegene til profilene elastisk deformert kort før viklingsprosessen, som vist på fig. 9, analogt til fig. 4. Fig. 8 and 10 show profile bands with the help of which it is possible to wind pipes with different wall thicknesses. Hereby, the same hooking principle is used as with the profile band shown in fig. 3- Thus, the steps of the profiles are also elastically deformed shortly before the winding process, as shown in fig. 9, analogous to fig. 4.
Ved hjelp av flere viklingslag og anvendelsen av profilene på fig. 8 og 10 kan det herved fremstilles rør med forskjellige veggtykkelser, slik som fig. 11 viser. By means of several layers of winding and the application of the profiles of fig. 8 and 10, pipes with different wall thicknesses can be produced, such as fig. 11 shows.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED0054252 | 1967-10-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
NO134513B true NO134513B (en) | 1976-07-19 |
NO134513C NO134513C (en) | 1976-10-27 |
Family
ID=7055610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO2868/68A NO134513C (en) | 1967-10-02 | 1968-07-19 |
Country Status (15)
Country | Link |
---|---|
US (1) | US3606670A (en) |
JP (1) | JPS5223651B1 (en) |
AT (1) | AT303372B (en) |
BE (1) | BE721267A (en) |
BG (1) | BG16429A3 (en) |
CH (1) | CH473670A (en) |
DK (1) | DK135616B (en) |
FR (1) | FR1580024A (en) |
GB (1) | GB1231660A (en) |
NL (1) | NL149423B (en) |
NO (1) | NO134513C (en) |
RO (1) | RO64580A (en) |
SE (1) | SE339562B (en) |
SU (1) | SU513606A3 (en) |
YU (2) | YU32069B (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2221727C3 (en) * | 1972-05-04 | 1978-08-24 | Dynamit Nobel Ag, 5210 Troisdorf | Device for calibrating a winding tube made of thermoplastic material |
US4063988A (en) * | 1976-05-12 | 1977-12-20 | Automation Industries, Inc. | Machine and method for forming continuous tubing |
EP0023242B1 (en) * | 1977-10-18 | 1983-09-07 | Rib Loc Hong Kong Limited | Profiled strips and method of forming tubular articles with these strips |
US4209043A (en) * | 1977-10-18 | 1980-06-24 | Rib Loc (Hong Kong) Ltd. | Plastic tubular objects |
US4178673A (en) * | 1978-07-14 | 1979-12-18 | Rockford Machine Tool Co. | Pipe snapper machine and method |
US4224965A (en) * | 1979-02-02 | 1980-09-30 | Omni Plastic Products, Inc. | Interlocking strip |
US4362187A (en) * | 1980-08-05 | 1982-12-07 | Manville Service Corporation | Spirally-formed thermoplastic tube |
US4594765A (en) * | 1984-11-16 | 1986-06-17 | Kinnear Joseph W | Strand covering devices and methods |
US4733629A (en) * | 1984-12-28 | 1988-03-29 | United Mcgill Corporation | Plastic lockseam tubing and method for making |
US4753256A (en) * | 1985-11-18 | 1988-06-28 | Alopex Industries, Inc. | Pool cleaner hose |
US4714508A (en) * | 1986-03-25 | 1987-12-22 | Alopex Industries, Inc. | Fixture and method for making spiral wound hose |
CN1046994C (en) * | 1994-08-25 | 1999-12-01 | 积水化学工业株式会社 | Method of lining pipe and apparatus therefor |
GB9606319D0 (en) * | 1996-03-26 | 1996-05-29 | Raychem Sa Nv | Strip for winding around and gripping an elongate object |
WO1998032997A1 (en) | 1997-01-22 | 1998-07-30 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Lining device for inside of free section duct |
US20020175432A1 (en) * | 2001-05-22 | 2002-11-28 | Peabody Mining Services Pty Limited | Method of and apparatus for forming a plastic lined tunnel |
JP2008520916A (en) * | 2004-11-24 | 2008-06-19 | チェン、イチン | Tube with spirally wound molded material |
WO2017116322A1 (en) | 2015-12-28 | 2017-07-06 | Mir Arastirma Ve Gelistirme A.S. | System and method for forming continuous profiled tubes |
-
1968
- 1968-06-28 DK DK319768AA patent/DK135616B/en not_active IP Right Cessation
- 1968-07-04 SE SE09230/68A patent/SE339562B/xx unknown
- 1968-07-12 CH CH1040168A patent/CH473670A/en not_active IP Right Cessation
- 1968-07-15 AT AT679868A patent/AT303372B/en not_active IP Right Cessation
- 1968-07-19 NL NL686810291A patent/NL149423B/en not_active IP Right Cessation
- 1968-07-19 NO NO2868/68A patent/NO134513C/no unknown
- 1968-07-20 BG BG010360A patent/BG16429A3/en unknown
- 1968-07-30 RO RO6867442A patent/RO64580A/en unknown
- 1968-07-31 JP JP43054243A patent/JPS5223651B1/ja active Pending
- 1968-09-18 FR FR1580024D patent/FR1580024A/fr not_active Expired
- 1968-09-23 BE BE721267D patent/BE721267A/xx unknown
- 1968-09-25 YU YU2238/68A patent/YU32069B/en unknown
- 1968-10-01 GB GB1231660D patent/GB1231660A/en not_active Expired
- 1968-10-01 SU SU1276666A patent/SU513606A3/en active
- 1968-10-02 US US764427A patent/US3606670A/en not_active Expired - Lifetime
-
1970
- 1970-08-25 YU YU2139/70A patent/YU33564B/en unknown
Also Published As
Publication number | Publication date |
---|---|
YU223868A (en) | 1973-02-28 |
RO64580A (en) | 1981-04-26 |
DE1704593A1 (en) | 1972-01-13 |
NO134513C (en) | 1976-10-27 |
BG16429A3 (en) | 1972-11-20 |
GB1231660A (en) | 1971-05-12 |
AT303372B (en) | 1972-11-27 |
BE721267A (en) | 1969-03-24 |
JPS5223651B1 (en) | 1977-06-25 |
NL149423B (en) | 1976-05-17 |
SU513606A3 (en) | 1976-05-05 |
YU213970A (en) | 1976-12-31 |
YU32069B (en) | 1974-02-28 |
FR1580024A (en) | 1969-08-29 |
SE339562B (en) | 1971-10-11 |
DE1704593B2 (en) | 1975-11-27 |
NL6810291A (en) | 1969-04-08 |
CH473670A (en) | 1969-06-15 |
DK135616C (en) | 1977-11-07 |
YU33564B (en) | 1977-08-31 |
DK135616B (en) | 1977-05-31 |
US3606670A (en) | 1971-09-21 |
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