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1. WO2020094992 - METHOD FOR PROCESSING NATURAL RUBBER

Publication Number WO/2020/094992
Publication Date 14.05.2020
International Application No. PCT/FR2019/052646
International Filing Date 07.11.2019
IPC
B29B 7/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
B29B 7/60 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
30continuous, with mechanical mixing or kneading devices
58Component parts, details or accessories; Auxiliary operations
60for feeding, e.g. end guides for the incoming material
B29B 7/72 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
30continuous, with mechanical mixing or kneading devices
58Component parts, details or accessories; Auxiliary operations
72Measuring, controlling or regulating
B29B 7/74 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
74using other mixers or combinations of dissimilar mixers
B29B 7/94 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
80Component parts, details or accessories; Auxiliary operations
88Adding charges
94Liquid charges
C08C 3/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
3Treatment of coagulated rubber
CPC
B29B 7/007
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
002Methods
007for continuous mixing
B29B 7/42
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
30continuous, with mechanical mixing or kneading devices
34with movable mixing or kneading devices
38rotary
40with single shaft
42with screw or helix
B29B 7/603
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
30continuous, with mechanical mixing or kneading devices
58Component parts, details or accessories; Auxiliary operations
60for feeding, e.g. end guides for the incoming material
603in measured doses, e.g. proportioning of several materials
B29B 7/726
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
30continuous, with mechanical mixing or kneading devices
58Component parts, details or accessories; Auxiliary operations
72Measuring, controlling or regulating
726Measuring properties of mixture, e.g. temperature or density
B29B 7/7495
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
74using other mixers or combinations of ; mixers, e.g. of; dissimilar mixers ; ; Plant
7476Systems, i.e. flow charts or diagrams; Plants
7495for mixing rubber
B29B 7/826
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
80Component parts, details or accessories; Auxiliary operations
82Heating or cooling
826Apparatus therefor
Applicants
  • COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN [FR]/[FR]
Inventors
  • DUSSILLOLS, Jérôme
Agents
  • GANDON-PAIN, Sylvie
Priority Data
FR186035309.11.2018FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR PROCESSING NATURAL RUBBER
(FR) PROCEDE DE TRAITEMENT D'UN CAOUTCHOUC NATUREL
Abstract
(EN)
Disclosed is a method for processing natural rubber in order to stabilise the natural rubber. According to the method, the natural rubber is introduced in the form of a wet coagulum into a worm gear machine, the worm gear machine being an extruder that comprises a sheath and that is equipped with an injection device that comprises one or more orifices opening in the sheath, referred to as injection points, and a hole die at the end of the screw, then a viscosity stabiliser is injected into the natural rubber via the injection device, the natural rubber is then compressed in the sheath at a temperature ranging from 130°C to 210°C, then subjected to adiabatic flash expansion at a differential pressure greater than or equal to 40 bars.
(FR)
Procédé de traitement d'un caoutchouc naturel pour stabiliser le caoutchouc naturel. Selon le procédé, le caoutchouc naturel est introduit sous la forme d'un coagulum humide dans une machine à vis sans fin, la machine à vis sans fin étant une extrudeuse qui comprend un fourreau et qui est équipée d'un dispositif d'injection qui comprend un ou plusieurs orifices débouchant dans le fourreau, dits points d'injection, et d'une filière à trous en bout de vis, puis un stabilisant de viscosité est injecté dans le caoutchouc naturel par l'intermédiaire du dispositif d'injection, le caoutchouc naturel est ensuite comprimé dans le fourreau à une température allant de 130°C à 210°C, puis soumis à une détente éclair adiabatique à une pression différentielle supérieure ou égale à 40 bars.
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