CA1079921A - System for mixing pulverulent rubber with liquids and solids - Google Patents
System for mixing pulverulent rubber with liquids and solidsInfo
- Publication number
- CA1079921A CA1079921A CA256,126A CA256126A CA1079921A CA 1079921 A CA1079921 A CA 1079921A CA 256126 A CA256126 A CA 256126A CA 1079921 A CA1079921 A CA 1079921A
- Authority
- CA
- Canada
- Prior art keywords
- rubber
- additives
- solid
- mixture
- minutes
- 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
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
- C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
-
- 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
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
-
- 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
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
-
- 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
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- 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
- B29K2105/25—Solid
- B29K2105/251—Particles, powder or granules
-
- 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
- C08J2321/00—Characterised by the use of unspecified rubbers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Abstract of the Disclosure A process for the production of a flowable mixture of rubbers and solid and liquid additives, wherein firstly particu-late rubber is mixed turbulently at temperatures of from 20 to 120°C with the solid additives for 0.5 to 2 minutes and subjec-ted to pulverisation, then the liquid additives are introduced in a period of from 0.1 to 3 minutes into the swirling mixture of rubber and solid additives and subsequently the components are mixed turbulently for up to a further 2 minutes.
Description
-: 10799~1 ,`-, The invention relates to the production o~ a flowable homogeneous mixture suitable for further processing of a rubber in powder or granular form, optionally a thermo-plastic in powder or granular form and solid and liquid additives, The invention also relates to an apparatus for carrying out the process.
Processes for theproduction of powder mixtures are known but hitherto the production of ~lowable storage-stable rubber mixtures on a large scale by technically simple means has not been successful, The object of the invention is a process for the production of a flowable mixture of rubbers and solid and liquid additives whrein firstly particulate rubber intensively mixed with the solid additives under turbulence at tempera-.:
- 15 tures of 20 to 120C for 0.5 to 2 minute8 and subjected to ~ pulverisation (the additives accumulating on the surface of - the rubber particles), whereafter the liquid additives are in-~,. troduced over a period of from 0.1 to 3 minutes into the tur-bulent mixture of rubber and 801id additives (the pulveri~a-, . , ,, 20 tion being 8ubstantially terminated) and subsequently the mix-,.. .
ture i8 mixed under turbulent conditions for a further period of up to 2 minutes.
The term "particulate rubbers" as used herein i9 intended to mean elastomers, which are present with particle diameters of from l micron to lO mm, preferably O.l to 6 mm and in particular 0.5 to 2.5 mm. Materials which are particularly suitable are natural rubber and synthetic rubbers such as polybutadiene, polyisoprene, butadiene-styrene-copolymers, butadiene/alkylacrylate copolymers, butadiene/acrylonitrile copolymers (nitrile rubber), Le A 16 685 - 1 -D~
10~9921 :
:
:
polychloroprene and ethylene propylene diene rubbers (EPDM-rubbers; the diene is generally not conjugated).
Also suitable (and included in the term rubber) are mixtures of elastomers and thermoplasts with a predomin-antly rubber character (in particular vulcanisable mixtures of this type), e.g. mixtures of polyvinylchloride and butadiene/acrylonitrile copolymers.
Solid additives include all solids which are custom-arily added to rubbers for processing. (The quantities specified below are parts by weight per 100 parts by weight rubber). Examples include carbon black (2 - 200), light filling materials such as ehalk, silicates (5 - ~000), vulcanising agents and vulcanising auxiliaries (sulphur, zinc, oxide, accelerators) anti-ageing agents, anti-ozone agents, resins, processing auxiliaries.
- Liquid additives include in particular plasticiser oils and extending oils (5-170) and resins (5-20), e.g.
~ phenol resins which are mostly used dissolved in oil.
; The first stage of the process can be carried out at 20 - 120C. However temperatures of approximately 30 to 40C are preferred. This also applies to the second stage.
In the final stage, temperatures of 30 - 50C are preferably used. Turbulent mixing means that the solid substances are mixed dry, being kept in motion mechanically, so that they swirl up.
The mixtures obtained are flowable powders capable of storage having particle sizes of from 1 micron to 10 mm, preferably 0.1 to 6 mm, in particular 0.5 to 2.5 mm. They generally contain all the necessary components for the rubber processing and thus can be further processed immediately.
Le A 16 685 - 2 -The liquid additives can be added within from 0.1 to 3 minutes continuously or with one or more interruption-~. Continuous addition is recommended i~or small quantities; interrupted addition for large ~uantities. It is important that the liquid additives - 5 should be injected into the rotating material i~unnel.
According to the invention, there is also provided an appa-ratus for the production of a flowable homogeneous mixture i~rom particulate rubber and solid and liquid additives, comprising a vessel having cylindrical side walls and a convex bottom and sealable by means of a lid, a rotatable drive shaft extending -~ substantially along the axis of the vessel having mounted thereona bottom scraper having a profile corresponding to the bottom of the vessel, on which drive sha~t is mounted at least one impact cutter and an impeller suction cutter and a guide plate mounted on the lid of the vessel 30 as to extend into the mixture in the vessel when in use.
Encrustations on the container inner wall and on the mixing - tool are avoided if during the mixing and pulverisation the fil-ling material is maintained at the specii~ied temperature. This can be achieved by adjusting the rotational ~peed of the mixing - tool.
Also of importance for encrustations at the container inner wall is the temperature of the layer of the material ad~acent the wall 80 that heating or cooling the outer walls oi~ the vessel can be desirable.
In the accompanying drawings:
Figure 1 shows particulate rubber (starting material) enlarged.
Figure 2 ~hows rubber ai~ter the addition oi~ solid additive (enlarged).
Figure 3 showQ rubber after the addition of qolid additive plu~
liquid additive (enlarged).
Figure 4 shows an embodiment of the apparatus ~or Le A 16 685 _ 3 O
10799Zl .
~ carrying out the process according to the '~' invention.
Figure 5 and 6 show an embodiment of the apparatus with the material flow indicated.
Figure 1 shows that the rubber particles 1 are still . relatively large and no additive has accumulated at their " ~i ~ surface.
,:~
- Figure 2 shows that the rubber particles 1 have been pulverised by the internal and external forces occurring during mixing and solid additives have accumulated at their .
surface.
~ Figure 3 shows that the rubber particles 1 have sub-; stantially maintained their size but are more rounded in shape and the accumulations have grown larger.
The apparatus shown in Figure 4 consists of a cylin-drical vessel 2 having a lid 3. The bottom 3 of the vessel
Processes for theproduction of powder mixtures are known but hitherto the production of ~lowable storage-stable rubber mixtures on a large scale by technically simple means has not been successful, The object of the invention is a process for the production of a flowable mixture of rubbers and solid and liquid additives whrein firstly particulate rubber intensively mixed with the solid additives under turbulence at tempera-.:
- 15 tures of 20 to 120C for 0.5 to 2 minute8 and subjected to ~ pulverisation (the additives accumulating on the surface of - the rubber particles), whereafter the liquid additives are in-~,. troduced over a period of from 0.1 to 3 minutes into the tur-bulent mixture of rubber and 801id additives (the pulveri~a-, . , ,, 20 tion being 8ubstantially terminated) and subsequently the mix-,.. .
ture i8 mixed under turbulent conditions for a further period of up to 2 minutes.
The term "particulate rubbers" as used herein i9 intended to mean elastomers, which are present with particle diameters of from l micron to lO mm, preferably O.l to 6 mm and in particular 0.5 to 2.5 mm. Materials which are particularly suitable are natural rubber and synthetic rubbers such as polybutadiene, polyisoprene, butadiene-styrene-copolymers, butadiene/alkylacrylate copolymers, butadiene/acrylonitrile copolymers (nitrile rubber), Le A 16 685 - 1 -D~
10~9921 :
:
:
polychloroprene and ethylene propylene diene rubbers (EPDM-rubbers; the diene is generally not conjugated).
Also suitable (and included in the term rubber) are mixtures of elastomers and thermoplasts with a predomin-antly rubber character (in particular vulcanisable mixtures of this type), e.g. mixtures of polyvinylchloride and butadiene/acrylonitrile copolymers.
Solid additives include all solids which are custom-arily added to rubbers for processing. (The quantities specified below are parts by weight per 100 parts by weight rubber). Examples include carbon black (2 - 200), light filling materials such as ehalk, silicates (5 - ~000), vulcanising agents and vulcanising auxiliaries (sulphur, zinc, oxide, accelerators) anti-ageing agents, anti-ozone agents, resins, processing auxiliaries.
- Liquid additives include in particular plasticiser oils and extending oils (5-170) and resins (5-20), e.g.
~ phenol resins which are mostly used dissolved in oil.
; The first stage of the process can be carried out at 20 - 120C. However temperatures of approximately 30 to 40C are preferred. This also applies to the second stage.
In the final stage, temperatures of 30 - 50C are preferably used. Turbulent mixing means that the solid substances are mixed dry, being kept in motion mechanically, so that they swirl up.
The mixtures obtained are flowable powders capable of storage having particle sizes of from 1 micron to 10 mm, preferably 0.1 to 6 mm, in particular 0.5 to 2.5 mm. They generally contain all the necessary components for the rubber processing and thus can be further processed immediately.
Le A 16 685 - 2 -The liquid additives can be added within from 0.1 to 3 minutes continuously or with one or more interruption-~. Continuous addition is recommended i~or small quantities; interrupted addition for large ~uantities. It is important that the liquid additives - 5 should be injected into the rotating material i~unnel.
According to the invention, there is also provided an appa-ratus for the production of a flowable homogeneous mixture i~rom particulate rubber and solid and liquid additives, comprising a vessel having cylindrical side walls and a convex bottom and sealable by means of a lid, a rotatable drive shaft extending -~ substantially along the axis of the vessel having mounted thereona bottom scraper having a profile corresponding to the bottom of the vessel, on which drive sha~t is mounted at least one impact cutter and an impeller suction cutter and a guide plate mounted on the lid of the vessel 30 as to extend into the mixture in the vessel when in use.
Encrustations on the container inner wall and on the mixing - tool are avoided if during the mixing and pulverisation the fil-ling material is maintained at the specii~ied temperature. This can be achieved by adjusting the rotational ~peed of the mixing - tool.
Also of importance for encrustations at the container inner wall is the temperature of the layer of the material ad~acent the wall 80 that heating or cooling the outer walls oi~ the vessel can be desirable.
In the accompanying drawings:
Figure 1 shows particulate rubber (starting material) enlarged.
Figure 2 ~hows rubber ai~ter the addition oi~ solid additive (enlarged).
Figure 3 showQ rubber after the addition of qolid additive plu~
liquid additive (enlarged).
Figure 4 shows an embodiment of the apparatus ~or Le A 16 685 _ 3 O
10799Zl .
~ carrying out the process according to the '~' invention.
Figure 5 and 6 show an embodiment of the apparatus with the material flow indicated.
Figure 1 shows that the rubber particles 1 are still . relatively large and no additive has accumulated at their " ~i ~ surface.
,:~
- Figure 2 shows that the rubber particles 1 have been pulverised by the internal and external forces occurring during mixing and solid additives have accumulated at their .
surface.
~ Figure 3 shows that the rubber particles 1 have sub-; stantially maintained their size but are more rounded in shape and the accumulations have grown larger.
The apparatus shown in Figure 4 consists of a cylin-drical vessel 2 having a lid 3. The bottom 3 of the vessel
2 has a curved shape. In the centre of the container 2 a . .
floor scraper 4 is provided which is mounted on a rotatably supported drive shaft 5. On the drive shaft 5 continuing upwards above the floor scraper 4 there i9 arranged at least one impact cutter 6, which effects the pulverisation Or the rubber particles and the solid additives. Above the impact cutter 6 on the same shaft 5 there is mounted an impeller ~uction cutter 7. The impeller suction cutter 7 ; 25 is an inward inclined ring which is connected to the drive axis by cross-pieces. The impeller suction cutter 7 guides the material swirling in the container inwards and at the same time sucks in air so that it provides for the vertical movement of the filling material. The cutter 7 - 30 and the floor-scraper simultaneously induce a horizontal movement. Altogether, the particles thus move on helical Le A 16 685 _ 4 _ 10799Z~
'`' paths through the container, The path of the particles is also influenced by the guide plate 8 fitted to the contain-er lid 3, of which the angle of pitch and depth of descent are adjustable. The drive is provided by an electric motor 9 of which therotational speed is controllable.
, V-belts 10 are the power transmission element. An outlet pipe 11 is located in the lower region of the container 2 through which the finished mixture is removed from the con-, tainer 2 by pneumatic means 12.
Examples.
General procedure ~,...
An apparatus according to Figure 4 is used with a volume of 100 1. 10 kg of particulate rubber is introduced into the apparatus together with solid additives. After closing the lid, the floor-clearer/cutter combination i~
set in rotation and brought as quickly as possible to 1500 rpm. After 2 minutes the liquid additives are added within a period of from 0.1 to 1 minute (depending on , quantity) and after a further 2 minutes the finished mixture is removed.
ExamDle 1 : A mixture for the roduction of rubber sectione Rubber: Butadiene/Acrylonitrile-Copolymer particle diameter 5 mm10 kg Solid additives:
Carbon black (Sterling 142) 6 kg Anti-ageing agent 0.2 kg ZnO 0.5 kg Accelerator 0.15 kg Sulphur 0.24 kg CaO 1 kg Liquid additives:
Le A 16 685 _ 5 _ 10799~1 ., ~.
., .
Oil(Plasticator 88) 3 kg . . .
- Resin (Koresin) 0,3 kg A rubber mixture is obtained with a mean particle size .;
of approximately 2.0 mm. The mixture is flowable (bulk .. ..
weight 0.5 g/cm~) and storage stable. Mixing temperature 37C; wall temperature of mixer 50C.
.-Exam~le 2: A mixture for a~eing-resistant sections Rubber: Polychloroprene Particle size 8 mm 10 kg Solid additives Carbon black (Sterling 50-1) 4 kg MgO 0.4 kg Anti-ozone agent 0.4 kg ;; 15 ZnO 0.5 kg Accelerator o.6 kg . Stearic acid 0.1 kg Liquid additives:
Oils (rape oil, plasticiser) 2.5 kg The mixture has a mean particle size of 2.5 mm; it is flowablg (bulk weight 0.51 g/cm3) and storage stable.
Mixing temperature 45C; wall temperature of mixer 50C.
Exam~le 3: A mixture for oft rubber prlntin Rubber: miYture of:
PVC (70~ by weight) and Butadiene/
Acrylonitrile Copolymer (30% by weight) particle size 6 mm10 kg - Solid additives:
ZnO 0.5 kg Stearic acid 0.1 kg TiO2 0.5 kg Le A 16 685 - 6 -10799Z ~
.~, Silica filling material 1.5 kg sulphur dye 0.24 kg Accelerator 0.18 kg :,:
Liquid additives:
Oils 20.5 kg r~ The mixture has a mean particle size of 2.8 mm it is flowable (bulk weight 0.55 g/cm3), storage stable; mixing temperature 43C; wall temperature of mixer 60C.
'~ 10 Le A 16 685 - 7 -
floor scraper 4 is provided which is mounted on a rotatably supported drive shaft 5. On the drive shaft 5 continuing upwards above the floor scraper 4 there i9 arranged at least one impact cutter 6, which effects the pulverisation Or the rubber particles and the solid additives. Above the impact cutter 6 on the same shaft 5 there is mounted an impeller ~uction cutter 7. The impeller suction cutter 7 ; 25 is an inward inclined ring which is connected to the drive axis by cross-pieces. The impeller suction cutter 7 guides the material swirling in the container inwards and at the same time sucks in air so that it provides for the vertical movement of the filling material. The cutter 7 - 30 and the floor-scraper simultaneously induce a horizontal movement. Altogether, the particles thus move on helical Le A 16 685 _ 4 _ 10799Z~
'`' paths through the container, The path of the particles is also influenced by the guide plate 8 fitted to the contain-er lid 3, of which the angle of pitch and depth of descent are adjustable. The drive is provided by an electric motor 9 of which therotational speed is controllable.
, V-belts 10 are the power transmission element. An outlet pipe 11 is located in the lower region of the container 2 through which the finished mixture is removed from the con-, tainer 2 by pneumatic means 12.
Examples.
General procedure ~,...
An apparatus according to Figure 4 is used with a volume of 100 1. 10 kg of particulate rubber is introduced into the apparatus together with solid additives. After closing the lid, the floor-clearer/cutter combination i~
set in rotation and brought as quickly as possible to 1500 rpm. After 2 minutes the liquid additives are added within a period of from 0.1 to 1 minute (depending on , quantity) and after a further 2 minutes the finished mixture is removed.
ExamDle 1 : A mixture for the roduction of rubber sectione Rubber: Butadiene/Acrylonitrile-Copolymer particle diameter 5 mm10 kg Solid additives:
Carbon black (Sterling 142) 6 kg Anti-ageing agent 0.2 kg ZnO 0.5 kg Accelerator 0.15 kg Sulphur 0.24 kg CaO 1 kg Liquid additives:
Le A 16 685 _ 5 _ 10799~1 ., ~.
., .
Oil(Plasticator 88) 3 kg . . .
- Resin (Koresin) 0,3 kg A rubber mixture is obtained with a mean particle size .;
of approximately 2.0 mm. The mixture is flowable (bulk .. ..
weight 0.5 g/cm~) and storage stable. Mixing temperature 37C; wall temperature of mixer 50C.
.-Exam~le 2: A mixture for a~eing-resistant sections Rubber: Polychloroprene Particle size 8 mm 10 kg Solid additives Carbon black (Sterling 50-1) 4 kg MgO 0.4 kg Anti-ozone agent 0.4 kg ;; 15 ZnO 0.5 kg Accelerator o.6 kg . Stearic acid 0.1 kg Liquid additives:
Oils (rape oil, plasticiser) 2.5 kg The mixture has a mean particle size of 2.5 mm; it is flowablg (bulk weight 0.51 g/cm3) and storage stable.
Mixing temperature 45C; wall temperature of mixer 50C.
Exam~le 3: A mixture for oft rubber prlntin Rubber: miYture of:
PVC (70~ by weight) and Butadiene/
Acrylonitrile Copolymer (30% by weight) particle size 6 mm10 kg - Solid additives:
ZnO 0.5 kg Stearic acid 0.1 kg TiO2 0.5 kg Le A 16 685 - 6 -10799Z ~
.~, Silica filling material 1.5 kg sulphur dye 0.24 kg Accelerator 0.18 kg :,:
Liquid additives:
Oils 20.5 kg r~ The mixture has a mean particle size of 2.8 mm it is flowable (bulk weight 0.55 g/cm3), storage stable; mixing temperature 43C; wall temperature of mixer 60C.
'~ 10 Le A 16 685 - 7 -
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A process for the production of a flowable mixture of particulate rubber and solid and liquid additives, wherein the particulate rubber is first mixed turbulently at temperatures of from 20 to 120°C with the solid additives for 0.5 to 2 minutes whilst undergoing pulverisation, whereafter the liquid additives are introduced over a period of from 0.1 to 3 minutes into the swirling mixture of rubber and solid additives and subsequently the components are mixed turbulently for up to a further 2 minutes.
2. A process as claimed in claim 1, wherein during mixing the mixture is cooled or heated from outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752529673 DE2529673A1 (en) | 1975-07-03 | 1975-07-03 | Flowable mixts. prodn. - from particulate rubber, solid and liq. additives, by short term intensive mixing at elevated temp. in two stages |
| DE19762619605 DE2619605A1 (en) | 1976-05-04 | 1976-05-04 | Flowable mixts. prodn. - from particulate rubber, solid and liq. additives, by short term intensive mixing at elevated temp. in two stages |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1079921A true CA1079921A (en) | 1980-06-24 |
Family
ID=25769106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA256,126A Expired CA1079921A (en) | 1975-07-03 | 1976-06-30 | System for mixing pulverulent rubber with liquids and solids |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS529049A (en) |
| AU (1) | AU508463B2 (en) |
| BR (1) | BR7604365A (en) |
| CA (1) | CA1079921A (en) |
| FR (1) | FR2316064A1 (en) |
| GB (2) | GB1551382A (en) |
| NL (1) | NL7607343A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2648301C2 (en) * | 1976-10-26 | 1983-01-13 | Bayer Ag, 5090 Leverkusen | Process for the production of powdered rubber powder |
| NL8200674A (en) * | 1981-02-26 | 1982-09-16 | Barcellini Lauro | MIXING AND STIRRING EQUIPMENT INTENDED FOR THE CONSTRUCTION SITE, IN PARTICULAR FOR CEMENT, SPECIES, MORTAR AND INERT MATERIAL. |
| GB2139516B (en) * | 1983-04-07 | 1986-07-16 | Thorn Emi Domestic Appliances | An apparatus for use in preparation of foodstuffs |
| GB2192559B (en) * | 1986-06-10 | 1990-12-12 | Cabot Corp | Apparatus and process for mixing and agitating carbon black |
| US4687794A (en) * | 1986-08-01 | 1987-08-18 | The Kendall Company | Novel system for preparing rubber compositions employing a cavity transfer mixer |
| JP2571581B2 (en) * | 1987-10-01 | 1997-01-16 | 山下ゴム株式会社 | Rubber kneaded dough manufacturing method |
| DE4004510A1 (en) * | 1990-02-14 | 1991-08-22 | Hoechst Ag | METHOD FOR PRODUCING PHOTOPOLYMER PLATES |
| DE4004512A1 (en) * | 1990-02-14 | 1991-08-22 | Hoechst Ag | METHOD FOR PRODUCING PHOTOPOLYMER PLATES |
| US5891955A (en) * | 1991-04-16 | 1999-04-06 | Ibf Integrated Business And Finance S.A. | Process for transforming a starting material containing at least two different thermoplastic materials into a new homogenous thermoplastic material |
| IT1245070B (en) * | 1991-04-16 | 1994-09-13 | Mariani Cinzia Licia D I | PROCEDURE AND DEVICE FOR THE HOMOGENIZATION OF WASTE OF PLASTIC MATERIAL OF A DIFFERENT NATURE FOR THE PURPOSE OF A REUSE OF THE SAME SIZES |
| US6686410B1 (en) * | 1998-11-03 | 2004-02-03 | Uniroyal Chemical Company, Inc. | Blending of polymeric materials and fillers |
| US7153895B2 (en) | 2001-09-12 | 2006-12-26 | Uniroyal Chemical Company, Inc. | Blending of rubber compounds, fillers and plasticizers |
| JP5905112B2 (en) | 2011-10-24 | 2016-04-20 | ブリヂストン アメリカズ タイヤ オペレイションズ エルエルシー | Silica-filled rubber composition and method for producing the same |
| JP2015042700A (en) * | 2013-08-26 | 2015-03-05 | 住友化学株式会社 | Rubber antioxidant agent |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT256450B (en) * | 1962-06-27 | 1967-08-25 | Huels Chemische Werke Ag | Device for agglomerating powdery thermoplastic plastics |
| DE1779961A1 (en) * | 1966-04-29 | 1972-10-26 | Papenmeier Guenther | High-speed mixer |
| DE1604353A1 (en) * | 1966-04-29 | 1970-09-10 | Draiswerke Gmbh | Machine for processing plastics |
| US3554274A (en) * | 1968-01-03 | 1971-01-12 | Friedrich W Herfeld | Heating and cooling mixer for preparing plastic material |
| DE1778436C3 (en) * | 1968-04-29 | 1974-08-01 | Papenmeier Geb. Mellies, Luise, 4930 Detmold | Process and device for the continuous processing of powdery to granular thermoplastics |
| DE2424249A1 (en) * | 1974-05-18 | 1975-11-27 | Bayer Ag | PROCESS FOR THE PRODUCTION OF POWDERED RUBBER-FILLER BATCHES |
-
1976
- 1976-06-29 AU AU15385/76A patent/AU508463B2/en not_active Expired
- 1976-06-30 CA CA256,126A patent/CA1079921A/en not_active Expired
- 1976-07-01 JP JP7712776A patent/JPS529049A/en active Pending
- 1976-07-02 NL NL7607343A patent/NL7607343A/en not_active Application Discontinuation
- 1976-07-02 FR FR7620343A patent/FR2316064A1/en active Granted
- 1976-07-02 GB GB2764376A patent/GB1551382A/en not_active Expired
- 1976-07-02 GB GB2066177A patent/GB1551383A/en not_active Expired
- 1976-07-02 BR BR7604365A patent/BR7604365A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1551382A (en) | 1979-08-30 |
| AU508463B2 (en) | 1980-03-20 |
| AU1538576A (en) | 1978-01-05 |
| GB1551383A (en) | 1979-08-30 |
| FR2316064B1 (en) | 1982-03-19 |
| JPS529049A (en) | 1977-01-24 |
| BR7604365A (en) | 1977-07-26 |
| NL7607343A (en) | 1977-01-05 |
| FR2316064A1 (en) | 1977-01-28 |
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