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FR2358972A1 - Extruded thermoplastic profiles - comprising thin, hard PVC sheath simultaneously extruded with a foamed PVC core - Google Patents

Extruded thermoplastic profiles - comprising thin, hard PVC sheath simultaneously extruded with a foamed PVC core

Info

Publication number
FR2358972A1
FR2358972A1 FR7722584A FR7722584A FR2358972A1 FR 2358972 A1 FR2358972 A1 FR 2358972A1 FR 7722584 A FR7722584 A FR 7722584A FR 7722584 A FR7722584 A FR 7722584A FR 2358972 A1 FR2358972 A1 FR 2358972A1
Authority
FR
France
Prior art keywords
extruded
core
foamed
sheath
die
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.)
Granted
Application number
FR7722584A
Other languages
French (fr)
Other versions
FR2358972B3 (en
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.)
PROGRESS PLASTICS Ltd
Original Assignee
PROGRESS PLASTICS Ltd
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 PROGRESS PLASTICS Ltd filed Critical PROGRESS PLASTICS Ltd
Publication of FR2358972A1 publication Critical patent/FR2358972A1/en
Application granted granted Critical
Publication of FR2358972B3 publication Critical patent/FR2358972B3/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • B29C48/09—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
    • B29C48/16—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
    • B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the 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
    • B29C48/25—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
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • 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
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

Extruded profile comprises a foamed thermoplastic core surrounded by a thermoplastic coating or sheath with a prescribed cross-section. During simultaneous extrusion, the core expands outwards and presses against the sheath, which resists the pressure. The sheath is pref. thin, and consists of hard PVC, whereas the core pref. consists of foamed PVC. Pref. the fluid sheath material is fed through the axial channel of an extruded head and then via a ring channel or a gap with the desired shape of the profile. The ring channel or gap is formed by an insert in a multipart die. The die has a side inlet channel for fluid, foamed core material, which flows via a channel shaped like an inverted "U" to an axial hole in the die; and the two materials are extruded from the die orifice. Used for the mfr. of inexpensive extrudates, for doors, window frames, panels, pillars, decoration, accessories etc.
FR7722584A 1976-07-23 1977-07-22 Extruded thermoplastic profiles - comprising thin, hard PVC sheath simultaneously extruded with a foamed PVC core Granted FR2358972A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA257655 1976-07-23

Publications (2)

Publication Number Publication Date
FR2358972A1 true FR2358972A1 (en) 1978-02-17
FR2358972B3 FR2358972B3 (en) 1980-07-11

Family

ID=4106491

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7722584A Granted FR2358972A1 (en) 1976-07-23 1977-07-22 Extruded thermoplastic profiles - comprising thin, hard PVC sheath simultaneously extruded with a foamed PVC core

Country Status (2)

Country Link
DE (1) DE2732866A1 (en)
FR (1) FR2358972A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT378413B (en) * 1982-10-04 1985-08-12 Hirsch Elisabeth EXTRUDED HOLLOW BODY PROFILE MADE OF PLASTIC
EP0722385A1 (en) * 1993-09-01 1996-07-24 Marley Mouldings Inc. Profiles, die and method for producing same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221624A (en) * 1978-04-03 1980-09-09 Eslinger Haynes L Method of manufacturing a foamed core thermoplastic sheet
FR2455972A1 (en) * 1979-05-10 1980-12-05 Sogecan Ste Gle Canalisations PROCESS AND APPARATUS FOR THE EXTRUSION OF PLASTIC TUBES WITH COMPOSITE WALLS
IT1126452B (en) * 1979-11-30 1986-05-21 Mario Calcagni EXTRUSION HEAD FOR PROFILES FOR FIXTURES AND SIMILAR, AS WELL AS PROFILE OBTAINED
IT1135542B (en) * 1981-02-19 1986-08-27 Mario Calcagni EXTRUSION HEAD FOR PROFILES FOR ROLLER SHUTTERS, FIXTURES AND SIMILAR, AS WELL AS PROFILE OBTAINED
US4518557A (en) * 1981-05-18 1985-05-21 James River-Norwalk, Inc. Process for skin foam

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT378413B (en) * 1982-10-04 1985-08-12 Hirsch Elisabeth EXTRUDED HOLLOW BODY PROFILE MADE OF PLASTIC
EP0722385A1 (en) * 1993-09-01 1996-07-24 Marley Mouldings Inc. Profiles, die and method for producing same
EP0722385A4 (en) * 1993-09-01 1996-12-27 Marley Mouldings Inc Profiles, die and method for producing same
US5795641A (en) * 1993-09-01 1998-08-18 Marley Mouldings Inc. Method and die for forming triple extruded profiles
US5965075A (en) * 1993-09-01 1999-10-12 Marley Mouldings Inc. Triple extruded frame profiles and method of producing same

Also Published As

Publication number Publication date
FR2358972B3 (en) 1980-07-11
DE2732866A1 (en) 1978-01-26

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse