FR2146256A1 - Plastic profiles - formed by continuous extrusion and cross-linking of thermoplastics - Google Patents

Plastic profiles - formed by continuous extrusion and cross-linking of thermoplastics

Info

Publication number
FR2146256A1
FR2146256A1 FR7225158A FR7225158A FR2146256A1 FR 2146256 A1 FR2146256 A1 FR 2146256A1 FR 7225158 A FR7225158 A FR 7225158A FR 7225158 A FR7225158 A FR 7225158A FR 2146256 A1 FR2146256 A1 FR 2146256A1
Authority
FR
France
Prior art keywords
cross
linking
heated
die
pref
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7225158A
Other languages
French (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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Publication of FR2146256A1 publication Critical patent/FR2146256A1/en
Withdrawn legal-status Critical Current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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—Heating
    • 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
    • B29C48/06—Rod-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
    • 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
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2301/00—Use of unspecified macromolecular compounds as reinforcement
    • B29K2301/10—Thermosetting resins

Abstract

Continuously extruded profiles, tubes or sheets of cross-linked thermoplastic material are formed under heat and pressure by mixing the thermoplastic material in granular or powder form with a cross-linking agent, heating the mixture to a temp. just below the cross-linking temp., splitting the material into a number of partial streams and reducing the cross section so as to apply pressure, the heat necessary for cross-linking being applied just prior to the passage of the material into the die head. Cross-linked or vulcanised profiles are formed in a single stage without using supplementary vulcanising apparatus. Pref. the apparatus has stream dividing ribs which can be heated and lead through a narrowing section to a heated head in the form of a mandrel leading to a heated die. One or more extruders may supply the die and may be connected to it obliquely or transversely. The parts of the appts. making contact with the synthetic material are pref. coated with a low friction material.
FR7225158A 1971-07-16 1972-07-11 Plastic profiles - formed by continuous extrusion and cross-linking of thermoplastics Withdrawn FR2146256A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2135549A DE2135549A1 (en) 1971-07-16 1971-07-16 PLASTIC EXTRUSION PRESSES

Publications (1)

Publication Number Publication Date
FR2146256A1 true FR2146256A1 (en) 1973-03-02

Family

ID=5813863

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7225158A Withdrawn FR2146256A1 (en) 1971-07-16 1972-07-11 Plastic profiles - formed by continuous extrusion and cross-linking of thermoplastics

Country Status (4)

Country Link
BE (1) BE786162A (en)
DE (1) DE2135549A1 (en)
FR (1) FR2146256A1 (en)
IT (1) IT962840B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355646A1 (en) * 1976-06-26 1978-01-20 Kabel Metallwerke Ghh Cable sheathing insulation foamed and crosslinked during extrusion - to obtain low density and concentric sheathing by viscosity control
EP0489534A1 (en) * 1990-11-27 1992-06-10 MITSUI TOATSU CHEMICALS, Inc. Extrusion method and extruder for obtaining phenolic resin pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355646A1 (en) * 1976-06-26 1978-01-20 Kabel Metallwerke Ghh Cable sheathing insulation foamed and crosslinked during extrusion - to obtain low density and concentric sheathing by viscosity control
EP0489534A1 (en) * 1990-11-27 1992-06-10 MITSUI TOATSU CHEMICALS, Inc. Extrusion method and extruder for obtaining phenolic resin pipe
US5204039A (en) * 1990-11-27 1993-04-20 Mitsui Toatsu Chemicals, Inc. Extrusion method and extruder used for obtaining phenolic resin pipe

Also Published As

Publication number Publication date
DE2135549A1 (en) 1973-01-25
BE786162A (en) 1972-11-03
IT962840B (en) 1973-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse