CA2142944A1 - Method for the production of expandable plastics granulate - Google Patents

Method for the production of expandable plastics granulate

Info

Publication number
CA2142944A1
CA2142944A1 CA002142944A CA2142944A CA2142944A1 CA 2142944 A1 CA2142944 A1 CA 2142944A1 CA 002142944 A CA002142944 A CA 002142944A CA 2142944 A CA2142944 A CA 2142944A CA 2142944 A1 CA2142944 A1 CA 2142944A1
Authority
CA
Canada
Prior art keywords
melt
blowing agent
production
mixture
impregnated
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.)
Granted
Application number
CA002142944A
Other languages
French (fr)
Other versions
CA2142944C (en
Inventor
Andreas Walder
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.)
Sulzer Chemtech AG
Original Assignee
Sulzer Chemtech AG
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 Sulzer Chemtech AG filed Critical Sulzer Chemtech AG
Publication of CA2142944A1 publication Critical patent/CA2142944A1/en
Application granted granted Critical
Publication of CA2142944C publication Critical patent/CA2142944C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3461—Making or treating expandable particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/14—Making preforms characterised by structure or composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
    • B29C48/37—Gear pumps
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/048—Expandable particles, beads or granules

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geometry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

In a method for the production of expandable plastics granulate (C) a plastics melt (A') is impregnated by a fluid blowing agent (B), the blowing agent being at an elevated pressure within a predetermined pressure range only partly soluble in the melt. The method comprises the following steps: 1. dispersion of the blowing agent in the melt, 2. retaining of the mixture within a predetermined pressure range for a predetermined retention time, 3. cooling of the melt impregnated by the blowing agent to a temperature which is several °C above the solidification temperature of the melt, and 4.
granulating the cooled mixture. According to the invention the mixture is acted upon by static mixing elements and by this mixing is avoided segregation.
CA002142944A 1994-02-21 1995-02-20 Method for the production of expandable plastics granulate Expired - Lifetime CA2142944C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94810098A EP0668139B1 (en) 1994-02-21 1994-02-21 Process for preparing expandable plastic granules
EP94810098.7 1994-02-21

Publications (2)

Publication Number Publication Date
CA2142944A1 true CA2142944A1 (en) 1995-08-22
CA2142944C CA2142944C (en) 2001-10-09

Family

ID=8218208

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002142944A Expired - Lifetime CA2142944C (en) 1994-02-21 1995-02-20 Method for the production of expandable plastics granulate

Country Status (6)

Country Link
EP (1) EP0668139B1 (en)
JP (1) JP3561022B2 (en)
KR (1) KR100372080B1 (en)
CA (1) CA2142944C (en)
DE (1) DE59409714D1 (en)
ES (1) ES2157245T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2008784A1 (en) 2007-06-25 2008-12-31 Gala Industries, Inc. Method and apparatus for producing polymer pellets containing volatiles and/or volatile generating material
US7771635B2 (en) 2006-04-20 2010-08-10 Gala Industries, Inc. Melt cooler and valving system for an underwater pelletizing process
US7776244B2 (en) 2002-06-14 2010-08-17 Basf Aktiengesellschaft Method for producing expandable polystyrene
CN113001814A (en) * 2021-03-23 2021-06-22 耿文龙 Reclaimed plastic particle granulator

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19547398A1 (en) * 1995-12-19 1997-06-26 Huels Chemische Werke Ag Process for the production of foamable plastic granules
DE19637063A1 (en) * 1996-09-12 1998-03-19 Werner & Pfleiderer Extruder for the production of plastic granules
IT1291706B1 (en) * 1997-05-09 1999-01-21 L M P Impianti S R L POLYESTER PRODUCTION PROCESS, IN PARTICULAR PET, EXPANDED.
DE10358804A1 (en) 2003-12-12 2005-07-14 Basf Ag Expandable styrene polymer granules with bimodal or multimodal molecular weight distribution
DE10358805A1 (en) 2003-12-12 2005-07-14 Basf Ag Particle foam moldings made of expandable, impact-modified, thermoplastic polymer granules
RU2295439C2 (en) 2005-02-21 2007-03-20 Общество с ограниченной ответственностью "ПРОМПЛАСТ 14" Method of production of the granules of the foaming styrene polymeric compound
PL1702738T3 (en) 2005-03-17 2013-09-30 Sulzer Chemtech Ag Procedure and plant for continuous manufacturing of expandable plastic granulates
ES2403187T3 (en) * 2005-03-17 2013-05-16 Sulzer Chemtech Ag Procedure and installation for the continuous manufacture of plastic granules that can be expanded
JP5165991B2 (en) 2006-11-23 2013-03-21 スルザー ケムテック アクチェンゲゼルシャフト Method and plant for producing polymer particles
ITMI20071003A1 (en) 2007-05-18 2008-11-19 Polimeri Europa Spa COMPOSITE BASED ON VINYLAROMATIC POLYMERS WITH IMPROVED PROPERTIES OF THERMAL INSULATION AND PROCEDURE FOR THEIR PREPARATION
ITMI20071005A1 (en) 2007-05-18 2008-11-19 Polimeri Europa Spa PROCEDURE FOR THE PREPARATION OF EXPANDABLE THERMOPLASTIC POLYMER GRANULES AND ITS PRODUCT
AT14242U1 (en) * 2007-06-25 2015-06-15 Gala Inc Process and apparatus for the preparation of polymer pellets with volatiles and / or such producing materials
AT505735A1 (en) 2007-09-14 2009-03-15 Sunpor Kunststoff Gmbh METHOD FOR THE PRODUCTION OF EXPANDABLE STYROLOPLYMERISES
DE102007050681A1 (en) * 2007-10-22 2009-04-23 Coperion Werner & Pfleiderer Gmbh & Co. Kg Method and device for producing a polymer granulate
RU2573472C2 (en) 2010-01-28 2016-01-20 Зульцер Хемтех Аг Unit for continuous production of foamed granulated plastic and method of its production
AT510311B1 (en) 2010-08-27 2013-02-15 Sunpor Kunststoff Gmbh FLAME-PROTECTED, HEAT-DAMPING POLYMERISATES AND METHOD FOR THE PRODUCTION THEREOF
AT510312B1 (en) 2010-08-27 2013-02-15 Sunpor Kunststoff Gmbh POLYMER FOAM BODIES OR PARTICULATE EXPANDABLE POLYMERISATE PARTICLES AND METHOD FOR THE PRODUCTION THEREOF
JP6105596B2 (en) 2011-09-27 2017-03-29 ダウ グローバル テクノロジーズ エルエルシー Melt devolatilization extrusion method
ITMI20120571A1 (en) 2012-04-06 2013-10-07 Versalis Spa "PROCEDURE FOR THE ADDITION AND TRANSPORT OF LABEL ADDITIVES IN CURRENT MATERIALS"
EP2918388A1 (en) * 2014-03-10 2015-09-16 Sulzer Chemtech AG A process to recycle expandable plastic materials and an expandable or expanded plastic material obtainable thereby
US10414895B2 (en) 2017-10-18 2019-09-17 Baker Hughes, a GE compan, LLC Color development of carbon black in expanded polystyrene
US10544277B2 (en) 2017-10-18 2020-01-28 Baker Hughes, A Ge Company, Llc Process for making gray expanded polystyrene

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA741721A (en) * 1966-08-30 H. Collins Frederick Pelletizing process and apparatus
GB1062307A (en) * 1965-03-17 1967-03-22 Shell Int Research Improvements in and relating to the manufacture of particulate expandable polymers and to the manufacture of expanded polymers therefrom
US3817669A (en) * 1971-08-19 1974-06-18 Dow Chemical Co Apparatus for the preparation of plastic foam
DE2739998C3 (en) * 1977-09-06 1980-04-10 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Extrusion device for the production of foamed plastic
JPS6052926B2 (en) * 1981-05-18 1985-11-22 積水化成品工業株式会社 Thermoplastic resin foam manufacturing method and device
US4436679A (en) * 1981-11-09 1984-03-13 Maryland Cup Corporation Method and apparatus for generating foamed thermoplastic materials
IT1163386B (en) * 1983-05-19 1987-04-08 Montedison Spa PROCEDURE FOR THE PRODUCTION OF EXPANDABLE GRANULES OF THERMOPLASTIC POLYMERS AND RELATED EQUIPMENT
US5000891A (en) * 1986-09-29 1991-03-19 Green James R Expandable polystyrene pellets
EP0445847A3 (en) * 1987-04-15 1992-01-15 The Dow Chemical Company Preparation of polymer foam and product

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7776244B2 (en) 2002-06-14 2010-08-17 Basf Aktiengesellschaft Method for producing expandable polystyrene
US7771635B2 (en) 2006-04-20 2010-08-10 Gala Industries, Inc. Melt cooler and valving system for an underwater pelletizing process
AU2007240855B2 (en) * 2006-04-20 2013-02-21 Gala Industries, Inc. Melt cooler and valving system for an underwater pelletizing process
USRE45113E1 (en) 2006-04-20 2014-09-09 Gala Industries, Inc. Melt cooler and valving system for an underwater pelletizing process
EP2008784A1 (en) 2007-06-25 2008-12-31 Gala Industries, Inc. Method and apparatus for producing polymer pellets containing volatiles and/or volatile generating material
CN113001814A (en) * 2021-03-23 2021-06-22 耿文龙 Reclaimed plastic particle granulator

Also Published As

Publication number Publication date
ES2157245T3 (en) 2001-08-16
JP3561022B2 (en) 2004-09-02
JPH07258454A (en) 1995-10-09
EP0668139B1 (en) 2001-04-04
KR100372080B1 (en) 2003-03-19
DE59409714D1 (en) 2001-05-10
EP0668139A1 (en) 1995-08-23
KR950031426A (en) 1995-12-18
CA2142944C (en) 2001-10-09

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Legal Events

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EEER Examination request
MKEX Expiry

Effective date: 20150220