FR2332121A1 - Die for extruding coaxial layers of varying thickness - esp. for mfg. shrink fit sheaths partially lined with adhesive - Google Patents

Die for extruding coaxial layers of varying thickness - esp. for mfg. shrink fit sheaths partially lined with adhesive

Info

Publication number
FR2332121A1
FR2332121A1 FR7634609A FR7634609A FR2332121A1 FR 2332121 A1 FR2332121 A1 FR 2332121A1 FR 7634609 A FR7634609 A FR 7634609A FR 7634609 A FR7634609 A FR 7634609A FR 2332121 A1 FR2332121 A1 FR 2332121A1
Authority
FR
France
Prior art keywords
die
extrudates
external
mandrel
adhesive
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
FR7634609A
Other languages
French (fr)
Other versions
FR2332121B3 (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.)
Commscope Connectivity Denmark AS
Original Assignee
Raychem AS
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 Raychem AS filed Critical Raychem AS
Publication of FR2332121A1 publication Critical patent/FR2332121A1/en
Application granted granted Critical
Publication of FR2332121B3 publication Critical patent/FR2332121B3/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
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • 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
    • B29C48/16—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
    • B29C48/03—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

Landscapes

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

Abstract

The extrusion die is for producing coaxial extrudates where >=1 of the extruded layers can be interrupted or varied in thickness as periodically. The die incorporates a hollow mandrel with a radial melt entry channel (through one of the mandrel supports) and an annular outlet adjacent to the annular outlet for the external extrudate. A mushroom-headed valve controls the release and flow rate of material from within the hollow mandrel. The complete mandrel can be shifted relative to the external die to adjust the wall thickness of the external extrudate. Suitable for preparing tubular parisons of varying wall thickness for blow moulding purposes. Also suitable for producing extrudates or parisons internally coated at intervals with a complementary melt of similar or different m.pt. e.g. to provide an internal band of melt adhesive or to produce asymmetric heat shrink behaviour from oriented composite sheaths. Refers to use for extrudates to be crosslinked by subsequent irradiation.
FR7634609A 1975-11-18 1976-11-17 Die for extruding coaxial layers of varying thickness - esp. for mfg. shrink fit sheaths partially lined with adhesive Granted FR2332121A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4744575 1975-11-18

Publications (2)

Publication Number Publication Date
FR2332121A1 true FR2332121A1 (en) 1977-06-17
FR2332121B3 FR2332121B3 (en) 1979-07-27

Family

ID=10444996

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7634609A Granted FR2332121A1 (en) 1975-11-18 1976-11-17 Die for extruding coaxial layers of varying thickness - esp. for mfg. shrink fit sheaths partially lined with adhesive

Country Status (3)

Country Link
BE (1) BE848511A (en)
DE (1) DE2652342A1 (en)
FR (1) FR2332121A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0230055A2 (en) * 1986-01-15 1987-07-29 Manfred Arno Alfred Lupke Extrusion die for manufacturing two-ply plastic tubing
FR2626811A1 (en) * 1988-02-04 1989-08-11 Bertho Patrick Device allowing variation in the masses of extruded articles
EP0430596A1 (en) * 1989-11-28 1991-06-05 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Parison head for use in a multi-layer blow moulding machine
EP0468261A2 (en) * 1990-07-24 1992-01-29 Bridgestone/Firestone, Inc. Coextrusion apparatus and method for varying the inner profile of a tubular extrudate
EP0468268A2 (en) * 1990-07-24 1992-01-29 Bridgestone/Firestone, Inc. Coextrusion apparatus for varying the inner and/or outer profile of a tubular extrudate
CN115023338A (en) * 2020-03-19 2022-09-06 日立安斯泰莫株式会社 Pipe intermediate and pipe manufacturing method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH640457A5 (en) * 1979-05-28 1984-01-13 Schiesser Ag METHOD AND DEVICE FOR FORMING THE INNER WALL PARTS OF VEHICLE TIRES.
DE3907866A1 (en) * 1989-03-10 1990-09-13 Troester Maschf Paul Die for extruding rubber mixtures and/or plastics and method of fitting this die into an extrusion apparatus
DE102006057189A1 (en) * 2006-12-05 2008-06-19 Nehrig, Jürgen Annular nozzle extruding tubular preform for manufacture of hollow plastic objects by e.g. blow-molding, includes mandrel and outer body in relative rotation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0230055A2 (en) * 1986-01-15 1987-07-29 Manfred Arno Alfred Lupke Extrusion die for manufacturing two-ply plastic tubing
EP0230055A3 (en) * 1986-01-15 1988-11-23 Manfred Arno Alfred Lupke Extrusion die for manufacturing two-ply plastic tubing
FR2626811A1 (en) * 1988-02-04 1989-08-11 Bertho Patrick Device allowing variation in the masses of extruded articles
EP0430596A1 (en) * 1989-11-28 1991-06-05 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Parison head for use in a multi-layer blow moulding machine
EP0468261A2 (en) * 1990-07-24 1992-01-29 Bridgestone/Firestone, Inc. Coextrusion apparatus and method for varying the inner profile of a tubular extrudate
EP0468268A2 (en) * 1990-07-24 1992-01-29 Bridgestone/Firestone, Inc. Coextrusion apparatus for varying the inner and/or outer profile of a tubular extrudate
EP0468268A3 (en) * 1990-07-24 1992-04-29 Bridgestone/Firestone, Inc. Coextrusion apparatus for varying the inner and/or outer profile of a tubular extrudate
EP0468261A3 (en) * 1990-07-24 1992-04-29 Bridgestone/Firestone, Inc. Coextrusion apparatus and method for varying the inner profile of a tubular extrudate
CN115023338A (en) * 2020-03-19 2022-09-06 日立安斯泰莫株式会社 Pipe intermediate and pipe manufacturing method
CN115023338B (en) * 2020-03-19 2024-03-08 日立安斯泰莫株式会社 Pipe intermediate and method for manufacturing pipe

Also Published As

Publication number Publication date
FR2332121B3 (en) 1979-07-27
DE2652342A1 (en) 1977-05-26
BE848511A (en) 1977-05-18

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Legal Events

Date Code Title Description
ST Notification of lapse