ZA728754B - Improvements in or relating to the extrusion of plastics pipes - Google Patents

Improvements in or relating to the extrusion of plastics pipes

Info

Publication number
ZA728754B
ZA728754B ZA728754A ZA728754A ZA728754B ZA 728754 B ZA728754 B ZA 728754B ZA 728754 A ZA728754 A ZA 728754A ZA 728754 A ZA728754 A ZA 728754A ZA 728754 B ZA728754 B ZA 728754B
Authority
ZA
South Africa
Prior art keywords
extrusion
relating
plastics pipes
plastics
pipes
Prior art date
Application number
ZA728754A
Other languages
English (en)
Inventor
J Cavey
Original Assignee
Hepworth 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 Hepworth Plastics Ltd filed Critical Hepworth Plastics Ltd
Publication of ZA728754B publication Critical patent/ZA728754B/xx

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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92152—Thickness
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92428—Calibration, after-treatment, or cooling 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92933—Conveying, transporting or storage of 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
    • B29C48/09—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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
ZA728754A 1972-11-18 1972-12-12 Improvements in or relating to the extrusion of plastics pipes ZA728754B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5342772 1972-11-18

Publications (1)

Publication Number Publication Date
ZA728754B true ZA728754B (en) 1973-08-29

Family

ID=10467771

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA728754A ZA728754B (en) 1972-11-18 1972-12-12 Improvements in or relating to the extrusion of plastics pipes

Country Status (7)

Country Link
JP (1) JPS4981464A (xx)
AU (1) AU5003272A (xx)
DE (1) DE2313950A1 (xx)
FR (1) FR2207016A1 (xx)
IT (1) IT973002B (xx)
NL (1) NL7301660A (xx)
ZA (1) ZA728754B (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55216B2 (xx) * 1975-03-13 1980-01-07
JPS5242556A (en) * 1975-09-30 1977-04-02 Kubota Ltd Method of automatically controlling tube thickness in extrusion molding of tube
DE3906363C1 (xx) * 1989-03-01 1990-11-08 Inoex Gmbh Innovationen Und Ausruestungen Fuer Die Extrusionstechnik, 4970 Bad Oeynhausen, De
EP0425944B1 (de) * 1989-10-31 1994-01-05 INOEX GmbH Extrudieranlage für Kunststoffrohre
DE102006045101A1 (de) * 2006-09-21 2008-04-03 Sobotta, Andreas, Dipl.-Ing. Verfahren zur Bestimmung einer Ortskoordinate eines Punkts an einem aus einem Extrusionswerkzeug dringenden Strang, sowie eines Qualitätsmerkmals eines Extrusionswerkzeugs, einer Extrusionsvorrichtung oder eines Materials zur Herstellung eines Profils
CN109016461A (zh) * 2018-05-29 2018-12-18 湖南联塑科技实业有限公司 一种新型的ppr管材外径变化在线自动检测监控报警系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1251014B (xx) * 1967-09-28
DE971619C (de) * 1953-05-05 1959-02-26 Troester Maschf Paul Einrichtung zur Kontrolle der Wandungen bei der Fertigung von Schlaeuchen und Rohren mittels radioaktiver Strahler
DE1157682B (de) * 1953-12-04 1963-11-21 Elektro Schmitz O H G Regelvorrichtung fuer Kabelumspritzmaschinen
GB1370946A (en) * 1971-05-14 1974-10-16 Wavin Plastics Ltd Extrusion of thermoplastics materials

Also Published As

Publication number Publication date
IT973002B (it) 1974-06-10
JPS4981464A (xx) 1974-08-06
DE2313950A1 (de) 1974-06-06
NL7301660A (xx) 1974-05-21
AU5003272A (en) 1974-06-13
FR2207016B1 (xx) 1975-10-31
FR2207016A1 (en) 1974-06-14

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