IT1400516B1 - Metodo e dispositivo per controllare lo spessore di film in estrusori in bolla - Google Patents

Metodo e dispositivo per controllare lo spessore di film in estrusori in bolla

Info

Publication number
IT1400516B1
IT1400516B1 ITPI2010A000077A ITPI20100077A IT1400516B1 IT 1400516 B1 IT1400516 B1 IT 1400516B1 IT PI2010A000077 A ITPI2010A000077 A IT PI2010A000077A IT PI20100077 A ITPI20100077 A IT PI20100077A IT 1400516 B1 IT1400516 B1 IT 1400516B1
Authority
IT
Italy
Prior art keywords
extruders
bubble
film
thickness
control
Prior art date
Application number
ITPI2010A000077A
Other languages
English (en)
Inventor
Marco Ponsiani
Original Assignee
Im Plast S R L
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 Im Plast S R L filed Critical Im Plast S R L
Priority to ITPI2010A000077A priority Critical patent/IT1400516B1/it
Publication of ITPI20100077A1 publication Critical patent/ITPI20100077A1/it
Application granted granted Critical
Publication of IT1400516B1 publication Critical patent/IT1400516B1/it

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
    • B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
    • B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
    • B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit 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
    • B29C48/03—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
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/08—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means
    • G01B7/087—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means for measuring of objects while moving

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
ITPI2010A000077A 2010-06-22 2010-06-22 Metodo e dispositivo per controllare lo spessore di film in estrusori in bolla IT1400516B1 (it)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITPI2010A000077A IT1400516B1 (it) 2010-06-22 2010-06-22 Metodo e dispositivo per controllare lo spessore di film in estrusori in bolla

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPI2010A000077A IT1400516B1 (it) 2010-06-22 2010-06-22 Metodo e dispositivo per controllare lo spessore di film in estrusori in bolla

Publications (2)

Publication Number Publication Date
ITPI20100077A1 ITPI20100077A1 (it) 2011-12-23
IT1400516B1 true IT1400516B1 (it) 2013-06-11

Family

ID=43428077

Family Applications (1)

Application Number Title Priority Date Filing Date
ITPI2010A000077A IT1400516B1 (it) 2010-06-22 2010-06-22 Metodo e dispositivo per controllare lo spessore di film in estrusori in bolla

Country Status (1)

Country Link
IT (1) IT1400516B1 (it)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474160A (en) * 1965-04-27 1969-10-21 Industrial Nucleonics Corp Method and apparatus for controlling blown film extruder
DE2816583A1 (de) * 1978-04-17 1979-10-18 Windmoeller & Hoelscher Verfahren und vorrichtung zur optimierung der ausstossleistung einer blasfolienextruderanlage mittels eines prozessrechners
DE2950003C2 (de) * 1979-12-12 1983-08-11 Windmöller & Hölscher, 4540 Lengerich Verfahren zur Regelung der Foliendicke an einer Blasfolien-Extruderanlage
DE4218993C1 (en) * 1992-06-10 1993-07-01 Reifenhaeuser Gmbh & Co Maschinenfabrik, 5210 Troisdorf, De Fault-free blown film tubing prodn. - using machine with extruding nozzle and air cooling system fitted with circumferential gauges connected to computer to correct deviations

Also Published As

Publication number Publication date
ITPI20100077A1 (it) 2011-12-23

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