FR2151741A5 - Parison extrusion head - incorporating a tubular mandrel with adjustment to vary the die orifice dimensions - Google Patents

Parison extrusion head - incorporating a tubular mandrel with adjustment to vary the die orifice dimensions

Info

Publication number
FR2151741A5
FR2151741A5 FR7132785A FR7132785A FR2151741A5 FR 2151741 A5 FR2151741 A5 FR 2151741A5 FR 7132785 A FR7132785 A FR 7132785A FR 7132785 A FR7132785 A FR 7132785A FR 2151741 A5 FR2151741 A5 FR 2151741A5
Authority
FR
France
Prior art keywords
tube
pref
vary
head
extrusion
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.)
Expired
Application number
FR7132785A
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.)
SANC RUDOLF
Original Assignee
SANC RUDOLF
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 SANC RUDOLF filed Critical SANC RUDOLF
Priority to FR7132785A priority Critical patent/FR2151741A5/en
Application granted granted Critical
Publication of FR2151741A5 publication Critical patent/FR2151741A5/en
Expired 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
    • B29C48/335—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
    • B29C48/03—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
    • B29C48/25—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
    • B29C48/03—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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

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

Abstract

An extrusion head having an axial passage which links an outlet nozzle with an oblique passage supplying extrusion feedstock from a heated reservoir and which incorporates a tube which can be adjusted axially to vary the clearance between the tube and the die. Pref. the internal tube is aligned by a sleeve mounted in the passage. Pref. a system of lock nuts can adjust the possible forward travel of the tube, and can also be temporarily released to allow the melt back pressure to lift the tube and purge any blockage of the die outlet. Pref. the melt chamber is connected to two extrusion heads. Pref. the internal tube and associated locking nuts and spacers are drilled to allow inflation of extruded tubular parisons. The head is readily adaptable to producing parisons of various wall thicknesses or extruded at various rates for a given melt pressure for making various sizes of containers without complete changes of extruder head. Purging is possible without disturbing the setting to which the internal tube is returned for further running.
FR7132785A 1971-09-10 1971-09-10 Parison extrusion head - incorporating a tubular mandrel with adjustment to vary the die orifice dimensions Expired FR2151741A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7132785A FR2151741A5 (en) 1971-09-10 1971-09-10 Parison extrusion head - incorporating a tubular mandrel with adjustment to vary the die orifice dimensions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7132785A FR2151741A5 (en) 1971-09-10 1971-09-10 Parison extrusion head - incorporating a tubular mandrel with adjustment to vary the die orifice dimensions

Publications (1)

Publication Number Publication Date
FR2151741A5 true FR2151741A5 (en) 1973-04-20

Family

ID=9082793

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7132785A Expired FR2151741A5 (en) 1971-09-10 1971-09-10 Parison extrusion head - incorporating a tubular mandrel with adjustment to vary the die orifice dimensions

Country Status (1)

Country Link
FR (1) FR2151741A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396286A2 (en) * 1989-05-01 1990-11-07 Hoover Universal Inc Dual parison extrusion head for multi-layer blow moulding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396286A2 (en) * 1989-05-01 1990-11-07 Hoover Universal Inc Dual parison extrusion head for multi-layer blow moulding
EP0396286A3 (en) * 1989-05-01 1991-05-08 Hoover Universal Inc Dual parison extrusion head for multi-layer blow moulding

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Legal Events

Date Code Title Description
ST Notification of lapse