FR2299959B1 - - Google Patents

Info

Publication number
FR2299959B1
FR2299959B1 FR7503888A FR7503888A FR2299959B1 FR 2299959 B1 FR2299959 B1 FR 2299959B1 FR 7503888 A FR7503888 A FR 7503888A FR 7503888 A FR7503888 A FR 7503888A FR 2299959 B1 FR2299959 B1 FR 2299959B1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7503888A
Other languages
French (fr)
Other versions
FR2299959A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Frankische Isolierrohr and Metallwaren Werke Gehrueder Kirchner
Original Assignee
Frankische Isolierrohr and Metallwaren Werke Gehrueder Kirchner
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
Priority to DE2403618A priority Critical patent/DE2403618C3/de
Priority claimed from DE2403618A external-priority patent/DE2403618C3/de
Application filed by Frankische Isolierrohr and Metallwaren Werke Gehrueder Kirchner filed Critical Frankische Isolierrohr and Metallwaren Werke Gehrueder Kirchner
Priority to FR7503888A priority patent/FR2299959A1/fr
Priority to GB5822/75A priority patent/GB1494684A/en
Priority claimed from US05/561,322 external-priority patent/US3994646A/en
Publication of FR2299959A1 publication Critical patent/FR2299959A1/fr
Application granted granted Critical
Publication of FR2299959B1 publication Critical patent/FR2299959B1/fr
Granted legal-status Critical Current

Links

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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0015—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
FR7503888A 1974-01-25 1975-02-07 Dispositif pour la fabrication d'un tuyau synthetique a double paroi Granted FR2299959A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2403618A DE2403618C3 (de) 1974-01-25 1974-01-25 Vorrichtung zum Herstellen eines doppelwandigen Kunststoffrohres
FR7503888A FR2299959A1 (fr) 1974-01-25 1975-02-07 Dispositif pour la fabrication d'un tuyau synthetique a double paroi
GB5822/75A GB1494684A (en) 1974-01-25 1975-02-11 Apparatus for the production of a double-walled plastics pipe or conduit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2403618A DE2403618C3 (de) 1974-01-25 1974-01-25 Vorrichtung zum Herstellen eines doppelwandigen Kunststoffrohres
FR7503888A FR2299959A1 (fr) 1974-01-25 1975-02-07 Dispositif pour la fabrication d'un tuyau synthetique a double paroi
US05/561,322 US3994646A (en) 1974-01-25 1975-03-24 Apparatus for producing double-walled tubes of plastic material

Publications (2)

Publication Number Publication Date
FR2299959A1 FR2299959A1 (fr) 1976-09-03
FR2299959B1 true FR2299959B1 (enExample) 1978-12-08

Family

ID=27185740

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7503888A Granted FR2299959A1 (fr) 1974-01-25 1975-02-07 Dispositif pour la fabrication d'un tuyau synthetique a double paroi

Country Status (1)

Country Link
FR (1) FR2299959A1 (enExample)

Also Published As

Publication number Publication date
FR2299959A1 (fr) 1976-09-03

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Legal Events

Date Code Title Description
ST Notification of lapse