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1. WO2000040645 - METHOD OF PRODUCING CHARGEABLE PLASTIC FOAM

Publication Number WO/2000/040645
Publication Date 13.07.2000
International Application No. PCT/EP1999/010156
International Filing Date 21.12.1999
Chapter 2 Demand Filed 19.07.2000
IPC
B29C 44/56 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming
34Component parts, details or accessories; Auxiliary operations
56After-treatment of articles, e.g. for altering the shape
C08J 9/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
04using blowing gases generated by a previously added blowing agent
C08J 9/38 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
36After-treatment
38Destruction of cell membranes
CPC
B29C 44/5627
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming ; ; Producing porous or cellular expanded plastics articles
34Auxiliary operations
56After-treatment of articles, e.g. for altering the shape
5627by mechanical deformation, e.g. crushing, embossing, stretching
C08J 2201/024
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2201Foams characterised by the foaming process
02characterised by mechanical pre- or post-treatments
024Preparation or use of a blowing agent concentrate, i.e. masterbatch in a foamable composition
C08J 9/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
04using blowing gases generated by a previously added blowing agent
C08J 9/38
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
36After-treatment
38Destruction of cell membranes
Applicants
  • COGNIS DEUTSCHLAND GMBH [DE/DE]; Henkelstrasse 67 D-40589 Düsseldorf, DE (AllExceptUS)
  • BARTNICK, Bernhard [DE/DE]; DE (UsOnly)
  • KRAMPITZ, Dieter [DE/DE]; DE (UsOnly)
Inventors
  • BARTNICK, Bernhard; DE
  • KRAMPITZ, Dieter; DE
Priority Data
199 00 489.708.01.1999DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR HERSTELLUNG BELADBARER KUNSTSTOFFSCHÄUME
(EN) METHOD OF PRODUCING CHARGEABLE PLASTIC FOAM
(FR) PROCEDE POUR PRODUIRE DES MOUSSES SYNTHETIQUES POUVANT ETRE CHARGEES
Abstract
(DE)
Die Erfindung betrifft ein Verfahren zur Herstellung beladbarer Kunststoffschäume, wobei man zu wenigstens einem thermoplastischen Basispolymeren ein chemisches Treibmittel gibt, die Masse schmilzt, vor und/oder nach dem Schmelzen mischt, und die Mischung unter Bildung eines schüttfähigen, porösen Trägermaterials abkühlt, mit der Maßgabe, daß man in einem Extruder oder mehrwelligen Kneter-Extruder arbeitet und wenigstens zeitweise ein inertes Gas in die Schmelze von Basispolymer und chemischem Treibmittel einleitet und wobei man den extrudierten Strang einer Verpressung und/oder Überstreckung unterwirft.
(EN)
The invention relates to a method of producing chargeable plastic foams. According to the inventive method, a chemical expanding agent is added to at least one thermoplastic base polymer. The mass is molten, mixed before and/or after melting, and the mixture is cooled, whereby a bulky, porous carrier material is formed, with the proviso that an extruder or multi-screw kneader-extruder is used and that at least intermittently an inert gas is fed to the melt consisting of the base polymer and the chemical expanding agent and that the extruded strand is subjected to compression and/or overstretching.
(FR)
L'invention concerne un procédé permettant de produire des mousses synthétiques pouvant être chargées, selon lequel on ajoute un agent porogène chimique à au moins un polymère thermoplastique de base. La matière est fondue, mélangée avant et/ou après la fusion et le mélange obtenu est refroidi de manière à former un matériau support poreux en vrac, sous réserve d'utiliser une extrudeuse ou une malaxeuse-extrudeuse à arbres multiples et d'injecter au moins par moments un gaz inerte dans la matière fondue de polymère de base et d'agent porogène chimique. Le jonc extrudé est soumis à une compression et/ou à un surétirage.
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