GB1482307A - Method of and apparatus for producing pigmented thermoplastic film - Google Patents

Method of and apparatus for producing pigmented thermoplastic film

Info

Publication number
GB1482307A
GB1482307A GB1969/75A GB196975A GB1482307A GB 1482307 A GB1482307 A GB 1482307A GB 1969/75 A GB1969/75 A GB 1969/75A GB 196975 A GB196975 A GB 196975A GB 1482307 A GB1482307 A GB 1482307A
Authority
GB
United Kingdom
Prior art keywords
control
measured
extruded
pigmented thermoplastic
thermoplastic film
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
GB1969/75A
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.)
ExxonMobil Oil Corp
Original Assignee
Mobil Oil Corp
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 Mobil Oil Corp filed Critical Mobil Oil Corp
Publication of GB1482307A publication Critical patent/GB1482307A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
    • G01B15/02—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/16—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being a moving sheet or film
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D5/00—Control of dimensions of material
    • G05D5/02—Control of dimensions of material of thickness, e.g. of rolled material
    • G05D5/03—Control of dimensions of material of thickness, e.g. of rolled material characterised by the use of electric means
    • 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
    • B29C2948/9218—Weight
    • 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
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

1482307 Controlling pigmentation of extruded thermoplastics film MOBIL OIL CORP 16 Jan 1975 [21 Feb 1974] 01969/75 Heading B5A [Also in Division G3] A pigmented thermoplastic material is extruded in the form of a hollow tube from an annular die 61, which may or may not rotate, its apparent thickness is measured by a radiation gauge 68, e.g. a backscatter gauge, and its weight per unit area is measured, a comparison of the two measurements being used to control the amount of pigment added to the material in extruder 60. The control is effected automatically, although reference is made to manual control. Weighing may be effected continuously by a roller scale (as shown) or after cutting off areas of material (Fig. 4, not shown). Preferred thermoplastic materials and pigments are given.
GB1969/75A 1974-02-21 1975-01-16 Method of and apparatus for producing pigmented thermoplastic film Expired GB1482307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44444474A 1974-02-21 1974-02-21

Publications (1)

Publication Number Publication Date
GB1482307A true GB1482307A (en) 1977-08-10

Family

ID=23764910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1969/75A Expired GB1482307A (en) 1974-02-21 1975-01-16 Method of and apparatus for producing pigmented thermoplastic film

Country Status (9)

Country Link
JP (1) JPS5420983B2 (en)
BE (1) BE825000A (en)
CA (1) CA1048126A (en)
DE (1) DE2503172C2 (en)
ES (1) ES433942A1 (en)
FR (1) FR2261857B1 (en)
GB (1) GB1482307A (en)
IT (1) IT1031429B (en)
NL (1) NL179947C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1801536A1 (en) * 2005-12-23 2007-06-27 Uponor Innovation Ab Method of manufacturing a pipe and a pipe
US10618212B2 (en) 2014-10-06 2020-04-14 Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik Coextrusion apparatus, single-layer extrusion apparatus and retrofit kit as well as a method for measuring a layer thickness, for producing a plastic film, and for retrofitting an extrusion apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311345C2 (en) * 1983-03-21 1986-02-20 RSM Regel-, Steuer- und Messtechnik GmbH, 4000 Düsseldorf Process for keeping the wall thickness constant when extruding (manufacturing) elongated objects from thermoplastics, such as foils, pipes, hoses, cable sheathing, plates and profiles and measuring and regulating devices for extruders, extrusion presses or the like for elongated objects
JP6424649B2 (en) * 2015-01-28 2018-11-21 東洋紡株式会社 Gas barrier molded body

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726922A (en) * 1952-10-06 1955-12-13 Us Rubber Co Control system
US2988641A (en) * 1957-01-28 1961-06-13 Dunlop Rubber Co Production of sheet materials

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1801536A1 (en) * 2005-12-23 2007-06-27 Uponor Innovation Ab Method of manufacturing a pipe and a pipe
WO2007071828A1 (en) * 2005-12-23 2007-06-28 Uponor Innovation Ab Method of manufacturing a pipe and a pipe
US10618212B2 (en) 2014-10-06 2020-04-14 Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik Coextrusion apparatus, single-layer extrusion apparatus and retrofit kit as well as a method for measuring a layer thickness, for producing a plastic film, and for retrofitting an extrusion apparatus

Also Published As

Publication number Publication date
BE825000A (en) 1975-07-30
FR2261857A1 (en) 1975-09-19
DE2503172A1 (en) 1975-08-28
NL179947C (en) 1986-12-01
CA1048126A (en) 1979-02-06
JPS5420983B2 (en) 1979-07-26
JPS50115271A (en) 1975-09-09
NL179947B (en) 1986-07-01
DE2503172C2 (en) 1984-07-19
FR2261857B1 (en) 1979-09-28
NL7502044A (en) 1975-08-25
IT1031429B (en) 1979-04-30
ES433942A1 (en) 1976-11-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940116