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GB1219946A - Extrusion process and apparatus - Google Patents

Extrusion process and apparatus

Info

Publication number
GB1219946A
GB1219946A GB38926/68A GB3892668A GB1219946A GB 1219946 A GB1219946 A GB 1219946A GB 38926/68 A GB38926/68 A GB 38926/68A GB 3892668 A GB3892668 A GB 3892668A GB 1219946 A GB1219946 A GB 1219946A
Authority
GB
United Kingdom
Prior art keywords
screw
duct
polymers
polymer
injection
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
GB38926/68A
Inventor
Peter John Barker
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB38926/68A priority Critical patent/GB1219946A/en
Priority to NL6912294A priority patent/NL6912294A/xx
Publication of GB1219946A publication Critical patent/GB1219946A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/201—Pre-melted polymers
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/29—Feeding the extrusion material to the extruder in liquid form
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/74—Bypassing means, i.e. part of the molten material being diverted into downstream stages of the extruder
    • B29C48/745—Bypassing means, i.e. part of the molten material being diverted into downstream stages of the extruder for plasticising or homogenising devices
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1,219,946. Extruding thermoplastic polymers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 15 July, 1969 [14 Aug., 1968], No. 38926/68. Heading B5A [Also in Division B1] In the screw extrusion of thermoplastic polymeric materials, an intimate mixture of an additive and a first polymer is injected as a melt into a molten stream of a second polymer, the injection taking place between two conveying zones of the screw extrusion apparatus. As shown, a duct 10 connects zones 2 and 6 separated by a cylindrical collar 4, and injection is by means of a screw 11 in a direction substantially counter to the flow through duct 10 to promote mixing. A further collar 3 and duct 9 are provided, as well as vents 7, 8, to which vacuum may be applied. In a modification, the apparatus may comprise at least two separate screw extruders one feeding directly into the feed point of the other via a duct and the injection being into this duct. Further, screw 11 may be replaced by a ram. The first and second polymers may be different, particularly when the first polymer is itself the additive, e.g. as an impact modifier, but are preferably similar or the same. Specific polymers mentioned are polyethylene, polypropylene, poly-4-methyl pentene-1, polystyrene, PVC, polyvinylidene chloride, polymethyl methacrylate, polyamides and polyoxymethylenes. Additives mentioned are pigments, fillers, e.g. glass fibres or mica, stabilizers, lubricants, cross-linked polymers and dyestuffs. In a first example, polymerized methyl methacrylate is delivered to the extruder of Fig. 1 from a twin screw extruder and a melt compounded mixture of 50 parts by weight of barium sulphate pigment and 50 parts by weight of polymethyl methacrylate is injected by screw 11, the resultant mix being extruded to give an opal sheet. In a second example, using the same materials, the screw extruder is fitted with a mixing head as described in Specification 843,849 (see Division B1) and reference is also made to the use of a mixing head as described in Specification 787,764 (see Division B1).
GB38926/68A 1968-08-14 1968-08-14 Extrusion process and apparatus Expired GB1219946A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB38926/68A GB1219946A (en) 1968-08-14 1968-08-14 Extrusion process and apparatus
NL6912294A NL6912294A (en) 1968-08-14 1969-08-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38926/68A GB1219946A (en) 1968-08-14 1968-08-14 Extrusion process and apparatus

Publications (1)

Publication Number Publication Date
GB1219946A true GB1219946A (en) 1971-01-20

Family

ID=10406526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38926/68A Expired GB1219946A (en) 1968-08-14 1968-08-14 Extrusion process and apparatus

Country Status (2)

Country Link
GB (1) GB1219946A (en)
NL (1) NL6912294A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006209A (en) * 1975-02-10 1977-02-01 Egan Machinery Company Method for additive feeding
US4616989A (en) * 1977-02-17 1986-10-14 Dynamit Nobel Aktiengesellschaft Apparatus for the incorporation of glass fibers into thermoplastic synthetic resins
DE4016784A1 (en) * 1990-05-25 1991-11-28 Werner & Pfleiderer EXTRUDER FOR PROCESSING PLASTIC BY FEEDING AT LEAST ONE STRING OF FIBER
WO1997015433A1 (en) * 1995-10-21 1997-05-01 Gefinex-Jackon Gmbh Extruder for plastics
DE19638243A1 (en) * 1996-09-16 1998-03-19 Kannegiesser Kmh Kunststofftec Process for producing a plastic, in particular with additives, and extruder for carrying out the process
WO2001003907A1 (en) * 1999-07-12 2001-01-18 Helmut Bacher Device and method for incorporating sensitive additives into thermoplastic synthetic material
EP1563983A1 (en) * 2004-02-13 2005-08-17 Maillefer S.A. Method and apparatus for altering the flow characteristics of a melt in an extrusion die
EP2058356A1 (en) * 2007-11-06 2009-05-13 Total Petrochemicals Research Feluy Additivising carbon black to polymer powder
EP2067795A1 (en) * 2007-12-04 2009-06-10 Formosa Plastics Corporation A method for producing a functional vinyl halide polymer
EP2325265A1 (en) * 2004-08-17 2011-05-25 Flint Group Incorporated Twin-Screw Extruder
WO2013013916A1 (en) * 2011-07-27 2013-01-31 Starlinger & Co Gesellschaft M.B.H. Device for degassing thermoplastic extrudate
WO2019003210A1 (en) * 2017-06-30 2019-01-03 Cryovac, Inc. Process for preparing single phase vinylidene chloride-based additive blends
CN112080067A (en) * 2020-08-26 2020-12-15 广东工业大学 High-filling filler modified polyolefin composite material and preparation method and application thereof

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006209A (en) * 1975-02-10 1977-02-01 Egan Machinery Company Method for additive feeding
US4616989A (en) * 1977-02-17 1986-10-14 Dynamit Nobel Aktiengesellschaft Apparatus for the incorporation of glass fibers into thermoplastic synthetic resins
DE4016784A1 (en) * 1990-05-25 1991-11-28 Werner & Pfleiderer EXTRUDER FOR PROCESSING PLASTIC BY FEEDING AT LEAST ONE STRING OF FIBER
WO1997015433A1 (en) * 1995-10-21 1997-05-01 Gefinex-Jackon Gmbh Extruder for plastics
DE19638243A1 (en) * 1996-09-16 1998-03-19 Kannegiesser Kmh Kunststofftec Process for producing a plastic, in particular with additives, and extruder for carrying out the process
WO2001003907A1 (en) * 1999-07-12 2001-01-18 Helmut Bacher Device and method for incorporating sensitive additives into thermoplastic synthetic material
EP1563983A1 (en) * 2004-02-13 2005-08-17 Maillefer S.A. Method and apparatus for altering the flow characteristics of a melt in an extrusion die
EP2325265A1 (en) * 2004-08-17 2011-05-25 Flint Group Incorporated Twin-Screw Extruder
WO2009059967A2 (en) * 2007-11-06 2009-05-14 Total Petrochemicals Research Feluy Additivising carbon black to polymer powder
WO2009059967A3 (en) * 2007-11-06 2009-11-05 Total Petrochemicals Research Feluy Additivising carbon black to polymer powder
EP2058356A1 (en) * 2007-11-06 2009-05-13 Total Petrochemicals Research Feluy Additivising carbon black to polymer powder
US8399543B2 (en) 2007-11-06 2013-03-19 Total Petrochemicals Research Feluy Additivising carbon black to polymer powder
EP2067795A1 (en) * 2007-12-04 2009-06-10 Formosa Plastics Corporation A method for producing a functional vinyl halide polymer
WO2013013916A1 (en) * 2011-07-27 2013-01-31 Starlinger & Co Gesellschaft M.B.H. Device for degassing thermoplastic extrudate
WO2019003210A1 (en) * 2017-06-30 2019-01-03 Cryovac, Inc. Process for preparing single phase vinylidene chloride-based additive blends
US11168185B2 (en) 2017-06-30 2021-11-09 Cryovac, Llc Process for preparing single phase vinylidene chloride-based additive blends
AU2018292795B2 (en) * 2017-06-30 2023-08-03 Cryovac, Llc Process for preparing single phase vinylidene chloride-based additive blends
CN112080067A (en) * 2020-08-26 2020-12-15 广东工业大学 High-filling filler modified polyolefin composite material and preparation method and application thereof

Also Published As

Publication number Publication date
NL6912294A (en) 1970-02-17

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