NO134513B - - Google Patents

Download PDF

Info

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
Application number
NO2868/68A
Other languages
Norwegian (no)
Other versions
NO134513C (en
Inventor
M Wienand
K Jensen
F-W Alfter
F Primessing
Original Assignee
Dynamit Nobel Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel Ag filed Critical Dynamit Nobel Ag
Publication of NO134513B publication Critical patent/NO134513B/no
Publication of NO134513C publication Critical patent/NO134513C/no

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/02Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024Thermal pre-treatments
    • B29C66/0244Cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56Winding and joining, e.g. winding spirally
    • B29C53/58Winding and joining, e.g. winding spirally helically
    • B29C53/78Winding and joining, e.g. winding spirally helically using profiled sheets or strips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/567Joining 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
    • B29C65/568Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/02Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024Thermal pre-treatments
    • B29C66/0242Heating, or preheating, e.g. drying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124Tongue and groove joints
    • B29C66/1242Tongue and groove joints comprising interlocking undercuts
    • B29C66/12421Teardrop-like, waterdrop-like or mushroom-like interlocking undercuts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124Tongue and groove joints
    • B29C66/1242Tongue and groove joints comprising interlocking undercuts
    • B29C66/12423Dovetailed interlocking undercuts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124Tongue and groove joints
    • B29C66/1244Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124Tongue and groove joints
    • B29C66/1246Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12461Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being rounded, i.e. U-shaped or C-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124Tongue and groove joints
    • B29C66/1246Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/432Joining 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
    • B29C66/4322Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/432Joining 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
    • B29C66/4329Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/49Internally supporting the, e.g. tubular, article during joining
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/73General 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
    • B29C66/739General 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
    • B29C66/7392General 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
    • B29C66/73921General 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General 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
    • B29C66/814General 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
    • B29C66/8141General 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
    • B29C66/81411General 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
    • B29C66/81421General 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
    • B29C66/81423General 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General 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
    • B29C66/8341Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411Roller, cylinder or drum types
    • B29C66/83413Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H81/00Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
    • B65H81/06Covering or wrapping elongated cores
    • B65H81/08Covering or wrapping elongated cores by feeding material obliquely to the axis of the core
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/16Rigid pipes wound from sheets or strips, with or without reinforcement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10Joining 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
    • B29C65/103Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4895Solvent bonding, i.e. the surfaces of the parts to be joined being treated with solvents, swelling or softening agents, without adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58Snap connection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/71General 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
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49863Assembling or joining with prestressing of part
    • Y10T29/4987Elastic joining of parts
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49863Assembling or joining with prestressing of part
    • Y10T29/49876Assembling or joining with prestressing of part by snap fit
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53657Means to assemble or disassemble to apply or remove a resilient article [e.g., tube, sleeve, etc.]

Landscapes

  • 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)

1. 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 et i en vulst anordnet spor, vikles skruelinjeformet om en avstøtning, hvorved steget, til den forangående vinding kontinuerlig innføres i sporet til det tilførte profilbånd, karakterisert 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 ekstra ved hjelp av trykkluft.1. Method for the production of a winding tube of thermoplastic plastic, in which a profile strip of thermoplastic plastic, one strip edge of which has a step and the other strip edge has a groove arranged in a bead, is wound helically around a push-off, whereby the step, to the preceding winding is continuously introduced into the slot of the supplied profile strip, characterized in that the supplied profile strip is softened to a state in the upper thermoelastic area and after the introduction of the step in the slot is cooled by means of the already cooled step, and preferably additionally by means of compressed air. 2. Fremgangsmåte ifølge krav 1,karakterisert ved at steget avkjøles til romtemperatur før inn-føringen i sporet.2. Method according to claim 1, characterized in that the step is cooled to room temperature before introduction into the groove.
NO2868/68A 1967-10-02 1968-07-19 NO134513C (en)

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)

* Cited by examiner, † Cited by third party
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

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

Similar Documents

Publication Publication Date Title
NO134513B (en)
US3477891A (en) Method of making continuous corrugated plastic pipe
US4406326A (en) Plastic well screen and method of forming same
RU2039866C1 (en) Stable-shape rod for louvres and method for manufacturing such rod
RU2070303C1 (en) Method and device for lining pipe line or passage
US2225026A (en) Method of making a tube of cellulose material
JPS6456531A (en) Method and device for manufacturing pipe liner
US2140213A (en) Method and apparatus for making thermoplastic tubing
CN203892741U (en) Enhanced type plastic steel winding tubular product
EP0052017A1 (en) Channelled plastic pipe with channel ends closed and method of producing the same
FR2111818B1 (en)
US2825673A (en) Thermal insulating covering for a pipe
DE1504870A1 (en) Fiber-reinforced plastic objects as well as method and device for producing these objects
JPS6035254B2 (en) Shape forming method
US3717916A (en) Apparatus for forming spiral wound pipes
NO168754B (en) DEVICE FOR PREPARING BEETS, CONTAINERS AND SIMILAR CYLINDRICAL PARTS.
US775541A (en) Pipe-covering and process of making same.
US3098664A (en) Plastic pipe
US4731138A (en) Apparatus for producing double-walled corrugated pipes
JP2004516203A (en) Multi-chamber tube
US3558391A (en) High temperature duct insulator and method of making same
US3198683A (en) Apparatus for sealing and folding flanged edges of containers
CN209991020U (en) Special-shaped strip and winding type inner rib corrugated pipe and special device for producing same
ITMI992685A1 (en) PROCEDURE FOR THE CREATION OF A DISTRIBUTED TUBE DEVICE TO REALIZE A DISTRIBUTED TUBE AND TUBE
US1735684A (en) Method of making air-cell pipe covering