EP4178777A1 - Procédé de production d'un mélange de caoutchouc et utilisation d'un dispositif convenant à la mise en ?uvre de ce procédé - Google Patents

Procédé de production d'un mélange de caoutchouc et utilisation d'un dispositif convenant à la mise en ?uvre de ce procédé

Info

Publication number
EP4178777A1
EP4178777A1 EP21732307.0A EP21732307A EP4178777A1 EP 4178777 A1 EP4178777 A1 EP 4178777A1 EP 21732307 A EP21732307 A EP 21732307A EP 4178777 A1 EP4178777 A1 EP 4178777A1
Authority
EP
European Patent Office
Prior art keywords
mixer
range
mixing
rotor
chamber
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.)
Pending
Application number
EP21732307.0A
Other languages
German (de)
English (en)
Inventor
Christopher Wortmann
Monir Sharifi
Andreas Kuellig
Tim RENNMANN
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.)
Continental Reifen Deutschland GmbH
Original Assignee
Continental Reifen Deutschland GmbH
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 Continental Reifen Deutschland GmbH filed Critical Continental Reifen Deutschland GmbH
Publication of EP4178777A1 publication Critical patent/EP4178777A1/fr
Pending 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
    • 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
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
    • B29B7/186—Rotors therefor
    • 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
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
    • B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
    • 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
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7466—Combinations of similar mixers
    • 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
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • 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
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type

Definitions

  • the invention relates to a method for producing a rubber compound and the use of a device suitable for carrying out the method for producing a rubber compound.
  • Rubber mixture components with each other always involves the conflict of objectives between producing the rubber mixture as quickly as possible and achieving the highest possible quality of the same.
  • various parameters play a role during production and have a major impact on the final product, which can be a pneumatic vehicle tire, for example.
  • One of the most important parameters here is the dispersion of the fillers in the rubber compound and the homogeneity of the distribution of the individual components in the rubber compound.
  • EP 2736690 B1 discloses "Method for the preparation of a starting mixture, during which the following steps are successively carried out: A - in an internal mixer type mixing device (100) of the type containing a mixing container (116), in the rotors (112, 113) that are set in rotation and have radial projections that form an air gap (e) between them and with the container, a rubber matrix, reinforcing fillers and, if necessary, other components are introduced, with the exception of the cross-linking system, B - the mixing of the components in the container is carried out until a homogeneous mixture is obtained, ensuring that the temperature of the mixture remains lower than or equal to 170°C Colour" (see claim 1 ).
  • EP 0618055 B1 describes a process for processing rubber base mixtures containing non-reactive additives into ready-made rubber mixtures using a ram kneader, with a previously prepared, finished base mixture being fed to the ram kneader for plasticizing and, after plasticizing, the batch being fed directly to a ram-less kneader in order to Ready-to-mix by adding reactive additives at a reduced temperature compared to the stamp kneader.
  • tandem mixers which are generally already known in the prior art:
  • DE4309451 A1 relates to a process for the production of rubber mixtures in which, in a first stage, a basic mixture is produced batchwise in a stamp kneader from rubber and non-reactive additives and the basic mixture is also batchwise added in a second stage without intermediate storage, with the addition of reactive additives in a stampless kneader reduced temperature is fully mixed.
  • tandem mixers have significantly reduced the manufacturing time of a batch of rubber compound.
  • the second mixer having a mixing chamber and at least one mixing rotor in the mixing chamber of the second mixer, wherein i. the mixing chamber of the second mixer is delimited by a chamber housing, a second filling opening and a second ejection opening, ii. the mixing chamber of the second mixer has a second chamber volume, wherein the volume ratio of the chamber volume of the mixing chamber of the second mixer to the chamber volume of the mixing chamber of the first mixer is in the range from 15:1 to 1:1, and iii. the at least one mixing rotor of the second mixer
  • the increase in vane field velocities can be qualitative, ie proportional to the shear rates, or quantitative, ie proportional to the area on which the shear rates are generated. The latter is quantified below using the formula for the vane field speed.
  • Simply increasing the shear rate or the sole increase in the area on which the shear rates are formed leads to better dispersion of the fillers and/or greater homogeneity of the components of the rubber mixture in the corresponding mixing chamber, which here preferably and advantageously is the first mixing chamber a device according to the invention.
  • both the shear rate and the area over which the shear rates are generated are increased at the same time, the dispersion of the fillers and/or the homogeneity of the components in the rubber compound increases disproportionately in the corresponding mixing chamber, which here is advantageously the first mixing chamber of a device according to the invention.
  • mixing chamber of the first mixer and “first mixing chamber” are used synonymously.
  • mixing chamber of the second mixer and “second mixing chamber” are used synonymously.
  • mixing rotors and “mixing rotors” are used synonymously
  • each mixing chamber comprises at least two mixing rotors as described above, preferably exactly two mixing rotors as described above.
  • the ratio of the blade field speeds acting on the rubber mixture during step A) in the mixing chamber of the first mixer to the blade field speeds acting on the rubber mixture during step C) in the mixing chamber of the second mixer is in the range from 1,000,000:1 to 1.01:1, preferably in the range from 100,000:1 to 5:1, particularly preferably in the range from 10,000:1 to 10:1, very particularly preferably in the range of 500 :1 to 100:1.
  • An advantage of the aspect of the present invention described above is that said flomogeneity and/or said dispersion of the fillers in the rubber compound is further improved by the relatively high blade field speeds described above in the first mixing chamber compared to the blade field speeds in the second mixing chamber .
  • the vane field speeds acting on the rubber mixture during step A) in the mixing chamber of the first mixer is in the range from 10 m/s to 300 m/s, preferably in the range from 20 m/s to 200 m/s, particularly preferably in the range of 30 m/s to 150 m/s, very particularly preferably in the range from 40 m/s to 100 m/s, and/or
  • the blade field velocities acting on the rubber mixture during step C) in the mixing chamber of the second mixer is in the range from 1 m/s to 80 m/s, preferably in the range from 3 m/s to 50 m/s, particularly preferably in the range of 3 m/s to 40 m/s, very particularly preferably in the range from 5 m/s to 30 m/s.
  • the shear rates i.e. how qualitatively high the forces are at the maximum radius of the rotor blade, are preferably calculated in the context of the present invention according to the following formula 1:
  • the quantity of the forces results from the area of a rotor blade of a rotor on which the maximum radius of the rotor described above in formula 1 located.
  • this area corresponds to the outer wall surface of the rotor blade closest to the chamber housing:
  • L maximum circumferential length of the outer wall surface on which the maximum radius of the same rotor lies [m]
  • h distance between the inner wall of the chamber housing and the outer wall of the rotor core of the same rotor [mm].
  • a rotor In the context of the present invention, a rotor consists of a rotor core and one or more rotor blades.
  • the radius of the rotor extends perpendicularly from the axis of rotation of the rotor to the outermost point of the rotor blade, ie in the radial direction of the axis of rotation of the rotor.
  • the maximum radius of the rotor is the distance at which the distance between said axis of rotation of the rotor and said radially outermost point of the blade of the same rotor, i.e. the blade tip, is greatest.
  • the circumferential length of an outer surface of a rotor extends circumferentially on the outer wall surface, the maximum circumferential length of the outer surface of the rotor being the circumferential length forming the longest circumferential extension on said outer surface. In the case of a rectangular outer wall surface of a rotor blade, this often corresponds to the diagonal between two opposite corners of the outer wall surface.
  • a method as described above or as described above as preferred is particularly preferred, wherein - the vane field velocities acting on the rubber mixture during step A) in the mixing chamber of the first mixer is in the range from 20 m/s to 300 m/s and
  • the blade field velocities acting on the rubber mixture during step C) in the mixing chamber of the second mixer is in the range from 1 m/s to 80 m/s.
  • the blade field velocities acting on the rubber mixture during step A) in the mixing chamber of the first mixer is in the range from 20 m/s to 200 m/s and
  • the vane field velocities acting on the rubber mixture during step C) in the mixing chamber of the second mixer is in the range from 3 m/s to 50 m/s.
  • - the blade field velocities acting on the rubber mixture during step A) in the mixing chamber of the first mixer is in the range from 30 m/s to 150 m/s and - the blade field velocities acting on the rubber mixture during step C) in the mixing chamber of the second mixer is in the range from 3 m/s to 30 m/s.
  • the vane field velocities acting on the rubber mixture during step A) in the mixing chamber of the first mixer is in the range from 30 m/s to 100 m/s and
  • the vane field velocities acting on the rubber mixture during step C) in the mixing chamber of the second mixer is in the range from 5 m/s to 30 m/s.
  • the second mixer has a feed unit for feeding rubber mixture components into the lower chamber housing, preferably a feed unit for feeding vulcanizing agents to the mixing chamber of the second mixer, wherein between steps A) and C ) or during step A) and/or C) vulcanizing means are transferred to the mixing chamber of the second mixer, so that an unvulcanized finished rubber mixture is produced in step C).
  • An advantage of the aspect of the present invention described above is that when curatives are added to the second mixing chamber, a ready-mixed rubber is prepared directly.
  • a ready-mixed rubber is prepared directly.
  • the second mixer having a mixing chamber and at least one mixing rotor in the mixing chamber of the second mixer, iv. the mixing chamber of the second mixer is delimited by a chamber housing, a second filling opening and a second ejection opening, v. the mixing chamber of the second mixer has a second chamber volume, the volume ratio of the chamber volume of the mixing chamber of the second mixer to the chamber volume of the mixing chamber of the first mixer being in the range from 5:1 to 1.1:1, and vi. the at least one mixing rotor of the second mixer has a mixing rotor core and at least two second rotor blades,
  • the second mixer has a feed unit for feeding vulcanizing agents to the mixing chamber of the second mixer, wherein between steps A) and C) or during step A) or C) vulcanizing agents are transferred to the mixing chamber of the second mixer, so that an unvulcanized rubber ready-mix in step C) arises,
  • the silica content of the rubber compound is in the range of 40 phr to 200 phr and less than 0.1 phr carbon black is present in the rubber compound
  • the rubber mixture comprises at least one rubber selected from the group consisting of NR, IR, SBR, SSBR and BR.
  • the invention also relates to the use of a device for producing a rubber mixture, the device being suitable for carrying out a method as described above or as described above as being preferred and comprising the following components:
  • a first mixer comprising a mixing chamber with at least one first mixing rotor, the mixing chamber of the first mixer
  • each of the at least one first mixing rotors having a mixer rotor core and at least two first rotor blades, the ratio of the total volume of all first rotor blades of all first mixing rotors to the mixing volume of the mixing chamber of the first mixer represents a first volume ratio, and
  • a second mixer comprising a mixing chamber with at least one second mixing rotor, the mixing chamber of the second mixer
  • the at least one second mixing rotor having a mixer rotor core and at least two second rotor blades, the ratio of the total volume of all second rotor blades of all second mixing rotors to the mixing volume of the mixing chamber of the second mixer represents second volume ratio, wherein the ratio of the second chamber volume of the mixing chamber of the second mixer to the first chamber volume of the mixing chamber of the first mixer im
  • the ratio of said first volume ratio to said second volume ratio is in the range from 50: 1 to 1:10, preferably in the range from 20: 1 to 1:1, preferably in the range from 15:1 to 1.1:1, particularly preferably in the range from 10:1 to 2:1.
  • the ratio of said first volume ratio to said second volume ratio improves the dispersion of the fillers and/or the distribution of the components in the rubber compound.
  • vane velocities can be increased qualitatively or quantitatively.
  • the quantity of the blade field velocities depends on the size of said area of the outer wall of a rotor blade as shown above in formula 2 and the quality of the blade field velocities depends, among other things, on the maximum radius of the rotor on said surface of the outer wall as above in formula 1 depends on the two parameters described above, i.e. both the size of the surface of the outer wall and the maximum radius of the rotor and thus the distance between the outer wall of the rotor blade and the inner wall of the respective chamber housing are geometric factors of the arrangement of the mixing rotors to the respective chamber housing of the mixing chamber , in which said mixing rotors are located.
  • first volume ratio for the first mixing chamber within the scope of the present invention and in the second volume ratio for the second mixing chamber within the scope of the present invention.
  • first volume ratio described above as well as the second volume ratio described above the volume of all rotor blades in relation to the mixing volume of the corresponding mixing chamber in which the corresponding rotor blades are located. The larger the volume of a rotor blade compared to the corresponding mixing chamber,
  • the above-mentioned ratio of the first volume ratio to the second volume ratio can increase that of a device according to the invention, in particular a tandem mixer, since a larger quantity of rubber mixture per mixing cycle based on the overall device according to the invention can be achieved .
  • the mixing volume of a mixing chamber is the chamber volume of the corresponding mixing chamber minus the volume occupied by all rotor cores in the corresponding mixing chamber.
  • the mixing volume of a mixing chamber thus corresponds to the volume in which a rubber mixture is located or can be moved in the corresponding mixing chamber.
  • the rubber compound comprises silica
  • the silica content of the rubber compound is preferably in the range from 1 phr to 200 phr and/or less than 0.1 phr carbon black in the rubber compound present, more preferably the silica content is in the range from 40 phr to 190 phr, most preferably the silica content is in the range from 60 phr to 180 phr, especially most preferably the silica content is in the range from 90 phr to 170 phr.
  • An advantage of the aspect of the present invention described above is that particularly for silica compounds, particularly large increases in the dispersion of the silica and the distribution of the remaining components in the rubber compound can be achieved. This applies all the more to silica mixtures with the preferred silica proportions described above.
  • the rubber mixture comprising one or more silanes
  • the silane fraction of the rubber mixture preferably being in the range from 0.01 phr to 50 phr, the silane fraction being particularly preferred in the range from 0.1 phr to 40 phr
  • the silane content is very particularly preferably in the range from 1 phr to 30 phr, in particular the silane content is very particularly preferably in the range from 3 phr to 20 phr.
  • An advantage of the aspect of the present invention described above is that, particularly for silica compounds, particularly large increases in the distribution of the silane in the rubber compound can be achieved. This applies all the more to silica mixtures with the preferred silane proportions described above.
  • the rubber mixture comprising at least one rubber selected from the group consisting of IIR, EPDM, NR, IR, SBR, SSBR and BR.
  • the volume ratio of the second chamber volume of the mixing chamber of the second mixer to the first chamber volume of the mixing chamber of the first mixer being in the range from 14:1 to 1.1:1, preferably in the range is from 10:1 to 1.5:1, particularly preferably in the range from 5:1 to 2:1.
  • An advantage of the aspect of the present invention described above is that in connection with the above-described ratio of said first volume ratio to said second volume ratio, greater vane field velocities arise in the first mixing chamber compared to the second mixing chamber and thus not only the advantages described above with regard to homogeneity and the dispersion can be improved, but also larger amounts of rubber mixtures per cycle can be achieved in a device according to the invention.
  • the ratio of said first volume ratio to said second volume ratio being in the range from 5:1 to 1:10, preferably in the range from 1:1 to 1:10, particularly preferred is in the range of 1:1.01 to 1:10.
  • An advantage of the aspect of the present invention described above is that even larger quantities of rubber mixtures per cycle can be achieved in a device according to the invention compared to the volume ratio as previously described.
  • a better temperature control can be achieved in the second mixing chamber, whereby an even better said homogeneity in the rubber mixture could be achieved.
  • each first rotor blade of all mixing rotors in the first mixer having a first aspect ratio, with the first aspect ratio being formed from the height of one of the first rotor blades, preferably each first rotor blade, to the effective Diameter of said one first rotor blade, preferably the corresponding first rotor blade of all first rotor blades, is in the range of 50:1 to 1:10, preferably in the range of 20:1 to 1.01:1, particularly preferably in the range of 15:1 to 1.1:1, most preferably in the range of 10:1 to 2:1, most preferably in the range of 8:1 to 5:1, with preferably the minimum distance between the blade tip of a first blade, preferably each first rotor blade, to the inner wall of the first mixer is in the range from 0.4 to 2.0 cm, preferably in the range from 0.6 cm to 1.5 cm, more preferably in the range of 0.7 to 0.9 cm.
  • An advantage of the aspect of the present invention described above is that better dispersion of the fillers in the rubber mixture resulting from the first mixing chamber is achieved by the above ratios.
  • the height of a rotor blade extends along the radial direction of the rotor of said rotor blade and is the distance from the outer wall of the rotor core to the rotor blade tip or the outer wall of said rotor blade, the height of a rotor blade preferably being the maximum radius of a rotor as defined in Formula 1 above.
  • VFiugei volume of the rotor blade or blades under consideration, whereby the volume of a cuboid rotor blade is calculated from the product of the mutually orthogonal side edge lengths according to mathematical geometry theory and the volume of a truncated pyramid-shaped rotor blade from the height of the rotor blade, the base area and the outer wall of the rotor blade according to mathematical geometry theory is calculated. Other volumes of three-dimensional rotor blades are calculated according to their geometric shape according to mathematical geometry theory.
  • the base area of a given rotor blade of a rotor is the interface between the rotor core of the same rotor and the given rotor blade of the one rotor.
  • every second rotor blade of all mixing rotors in the second mixer having a second aspect ratio, with the second aspect ratio formed from the height of one of the second rotor blades, preferably every second rotor blade, to the effective Diameter of said one second rotor blade, preferably the corresponding second rotor blade of all second rotor blades, is in the range of 50:1 to 1:10, preferably in the range of 20:1 to 1:10, particularly preferably in the range of 5:1 to 1 :10, very particularly preferably in the range from 2:1 to 1:5, in particular very particularly preferably in the range from 1:1 to 1:2.
  • an advantage of the aspect of the present invention described above is that better homogeneity of the rubber mixture resulting from the second mixing chamber is achieved by the above ratios.
  • the ratio of the first aspect ratio to the second aspect ratio being in the range from 100:1 to 1:10, preferably in the range from 50:1 to 1.01:1, particularly preferably in the range from 20:1 to 1.1:1, very particularly preferably in the range from 20:1 to 2:1, in particular very particularly preferably in the range from 10:1 to 5:1.
  • An advantage of the aspect of the present invention described above is that in the range from 100:1 to 1:10 sufficiently high vane field speeds can be achieved with the greatest possible said homogeneity and the greatest possible efficiency as described above in a device according to the invention.
  • ratios of the first aspect ratio to the second aspect ratio in the range from 100:1 to 1.01:1, particularly preferably from 100:1 to 1.1:1, very particularly preferably from 100:1 to 2:1. in particular very particularly preferably from 100:1 to 5:1.
  • the ratio of the minimum distance between the or all rotor blade tips of a first rotor blade and the inner wall of the chamber housing of the first mixer to the minimum distance between the or all rotor blade tips of a second rotor blade and the inner wall of the chamber housing of the second mixer in the range from 10:1 to 1:50, preferably in the range from 5:1 to 1:20, particularly preferably in the range from 1:1 to 1:8, very particularly preferably in the range of 1 :1.1 to 1:2, with preference being given
  • the minimum distance between the or all rotor blade tips of a second rotor blade and the inner wall of the chamber housing of the second mixer is from 0.8 to 5.0 cm, preferably in the range from 1.0 to 5 cm, particularly preferably in the range from 1.0 to 2.0 cm, very particularly preferably in the range from 1.2 to 2.0 cm, and/or
  • the minimum distance between the rotor blade tips of a second rotor blade, preferably every second rotor blade, to the outer wall of the mixing rotor core of the other mixing rotor of the second mixer is in the range of 1.0 to 5.0 cm, preferably in the range of 1.5 to 5, 0 cm, particularly preferably in the range from 1.5 to 3.0 cm, very particularly preferably in the range from 2.0 to 3.0 cm.
  • An advantage of the above aspect of the present invention is that the vane velocities in the first mixing chamber are increased even further compared to the vane velocities in the second mixing chamber. As already described above, this increases said dispersion and/or said flomogeneity even further compared to the preferred uses of the present invention described above.
  • the minimum distance between the or all rotor blade tips of a rotor blade of a rotor and the inner wall of the chamber housing in which said rotor is arranged with said one or all rotor blade tips is the smallest distance that said rotor can rotate in one revolution about its axis of rotation to said chamber housing.
  • first and second mixers each having two mixing rotors, the ratio
  • the minimum distance between the rotor blade tip of a first rotor blade, preferably each first rotor blade, to the outer wall of the mixing rotor core of the other mixing rotor of the first mixer is in the range of 0.6 to 2.0 cm, preferably in the range of 0.8 cm to 1 5 cm, particularly preferably in the range from 1.0 to 1.5 cm, very particularly preferably in the range from 1.2 to 1.5 cm, and/or
  • the minimum distance between the rotor blade tips of a second rotor blade, preferably every second rotor blade, to the outer wall of the mixing rotor core of the other mixing rotor of the second mixer is in the range of 1.0 to 5.0 cm, preferably in the range of 1.5 to 5, 0 cm, particularly preferably in the range from 1.5 to 3.0 cm, very particularly preferably in the range from 2.0 to 3.0 cm.
  • the minimum distance between a rotor blade tip in a mixing chamber and the outer wall of the mixing rotor core of the other mixing rotor of the same mixing chamber is the smallest distance that said rotor blade tip has in one revolution about the axis of rotation of the rotor to the outer wall of the mixing rotor core of the other mixing rotor .
  • An advantage of the aspect of the present invention described above is that the vane velocities in the first mixing chamber are increased even further compared to the vane velocities in the second mixing chamber, since now above also the vane velocities acting between the various rotors of a mixing chamber, in addition to the Vane field velocities between the individual rotors and the inner wall of the chamber housing of the corresponding mixer were taken into account. This increases said dispersion and/or said homogeneity even further compared to the uses of the present invention described above as preferred or described as particularly preferred.
  • Preferred is a use as described above or as described above as being preferred, wherein all mixing rotors of the first mixer are intermeshing rotors and/or all mixing rotors of the second mixer are intermeshing rotors.
  • An advantage of the aspect of the present invention described above is that even higher blade field speeds can be achieved in the first mixer described above, while in the second mixer an even better distribution of the components in the rubber mixture and thus even greater homogeneity as described above can be achieved
  • the first mixer having a ram and/or the second mixer having no ram and/or the first mixer being a top mixer and the second mixer being a bottom mixer of a tandem mixer.
  • an advantage of the aspect of the present invention described above is that the device according to the invention is a tandem mixer and thus a significant reduction in the amount per cycle is achieved, in which particularly large increases in said homogeneity and/or said dispersion are achieved within the scope of the present invention will.
  • the device for performing a method according to a of the preceding claims and comprises the following components:
  • a first mixer comprising a mixing chamber with at least one first mixing rotor, the mixing chamber of the first mixer
  • each of the at least one first mixing rotors having a mixer rotor core and at least two first rotor blades, the ratio of the total volume of all first rotor blades of all first mixing rotors to the mixing volume of the mixing chamber of the first mixer represents a first volume ratio, and
  • a second mixer comprising a mixing chamber with at least one second mixing rotor, the mixing chamber of the second mixer
  • the at least one second mixing rotor having a mixer rotor core and at least two second rotor blades, the ratio of the total volume of all second rotor blades of all second mixing rotors to the mixing volume of the mixing chamber of the second mixer second volume ratio, wherein the volume ratio of the second chamber volume of the mixing chamber of the second mixer to the first chamber volume of the mixing chamber of the first mixer is in the range of 5:1 to 1.1:1, characterized in that the ratio of said first volume ratio to said second volume ratio is in the range of 10:1 to 2:1, where each first rotor blade of all mixing rotors in the first mixer having a first aspect ratio, the first aspect ratio being the height of one of the first rotor blades to the effective diameter of said one first rotor blade being in the range of 10:1 to 2:1, every other rotor blade all mixing rotors in the second mixer have a second aspect ratio, the second aspect ratio
  • the ratio of the first aspect ratio to the second aspect ratio is in the range from 20:1 to 1.01:1,
  • the first and second mixers each have two mixing rotors, the ratio of the minimum distance between the rotor blade tip of a first rotor blade of a mixing rotor of the first mixer and the outer wall of the mixing rotor core of the other mixing rotor of the first mixer to the minimum distance between the rotor blade tip of a second rotor blade being one mixing rotor of the second mixer and the outer wall of the mixing rotor core of the other mixing rotor of the second mixer in the range from 20:1 to 1.1:1,
  • the first rotor blades are intermeshing rotors and the second rotor blades of the two sub-mixer rotors are intermeshing rotors
  • the first mixer has a plunger and the second mixer has no plunger
  • the first mixer is a top mixer and the second mixer is a bottom mixer of a tandem mixer.
  • the present invention is described below with reference to further aspects.
  • the advantageous embodiments of a use according to the invention and a method according to the invention described above also apply to all aspects of a device described below and the advantageous aspects of devices according to the invention discussed below apply accordingly to all embodiments of a use according to the invention and a method according to the invention, with both the term "upper mixer” including the term "first mixer” and the term “sub-mixer” is synonymous with the term "second mixer”.
  • a device for preparing a rubber compound comprising
  • top mixer with at least two top mixer rotors, the top mixer being delimited by a top chamber housing, a first filling opening and a first ejection opening, the top mixer rotors having a top mixer rotor core and at least two first rotor blades, the ratio of the total volume of all the first rotor blades to the effective volume of the Upper chamber housing represents a first volume ratio, and
  • the ratio of the total volume of all the second rotor blades to the effective volume of the Lower chamber housing represents a second volume ratio, characterized in that the ratio of said first volume ratio to said second volume ratio is in the range of 50:1 to 1:10, preferably in the range of 20:1 to 1:1, preferably in the range of 15 :1 to 1.1:1, more preferably in the range 10:1 to 2:1.
  • the ratio of the second chamber volume of the mixing chamber of the second mixer to the first chamber volume of the mixing chamber of the first mixer is in the range from 15:1 to 1:1, preferably in the range from 14:1 to 1.1: 1 is particularly preferably in the range from 10:1 to 1.5:1, very particularly preferably in the range from 5:1 to 2:1.
  • a first aspect ratio formed from the height of one of the first rotor blades to the effective diameter of said one first rotor blade is in the range from 50:1 to 1:10, preferably in the range from 20:1 to 1.01:1, particularly preferably in the range from 15:1 to 1.1:1, very particularly preferably in the range from 10:1 to 2:1, particularly very particularly preferably in the range from 8:1 to 5:1, and/or a second aspect ratio formed from the height of one of the second rotor blades to the effective diameter of said one second rotor blade is in the range from 50:1 to 1:10, preferably in the range from 20:1 to 1:10, particularly preferably im Range from 5:1 to 1:10, very particularly preferably in the range from 2:1 to 1:5, particularly very particularly preferably in the range from 1:1 to 1:2.
  • the ratio of the first aspect ratio to the second aspect ratio is in the range of 100:1 to 1:10, preferably in the range of 50:1 to 1.01:1, particularly preferably in the range of 20:1 to 1.1:1, very particularly preferably in the range from 20:1 to 2:1, in particular very particularly preferably in the range from 10:1 to 5:1.
  • the ratio of the minimum distance between the blade tip of a first blade and the inner wall of the upper chamber housing to the minimum distance between the blade tip of a second blade and the inner wall of the lower chamber housing in the range from 10:1 to 1:50, preferably in the range from 5:1 to 1:20, particularly preferably in the range from 1:1 to 1:8, very particularly preferably in the range from 1:1.1 to 1:2
  • the ratio of the minimum distance between the rotor blade tip of a first rotor blade and the outer wall of the upper mixer rotor core to the minimum distance between the rotor blade tip of a second rotor blade and the outer wall of the lower mixer rotor core is in the range from 50:1 to 1, 01:1, preferably in the range from 20:1 to 1.1:1, particularly preferably in the range from 20:1 to 2:1, very particularly preferably in the range from 10:1 to 5:1.
  • the device has a feed unit for feeding rubber mixture components into the lower chamber housing, preferably a feed unit for feeding vulcanizing agents into the lower chamber housing.
  • the upper mixer has a plunger and/or the lower mixer has no plunger and/or
  • the first mixer is a top mixer and the second mixer is a bottom mixer of a tandem mixer.
  • a method for producing unvulcanized vehicle tire components and/or a vehicle tire comprising the following steps: i. Manufacturing or providing rubber compound ingredients, ii. Mixing the rubber mixture components prepared and/or provided in step A) in the top mixer of a device according to one of the preceding aspects to a rubber base compound, iii. Mixing the rubber base mixture produced in step B) with vulcanizing agents and optionally others
  • Process for preparing a rubber compound comprising the following steps:
  • the second mixer having a mixing chamber and has at least one mixing rotor (1) in the mixing chamber of the second mixer, i. the mixing chamber of the second mixer is delimited by a chamber housing, a second filling opening and a second ejection opening, ii. the mixing chamber of the second mixer has a second chamber volume, wherein the volume ratio of the chamber volume of the mixing chamber of the second mixer to the chamber volume of the mixing chamber of the first mixer is in the range from 15:1 to 1:1, and iii. the at least one mixing rotor (1) of the second mixer has a mixing rotor core (2) and at least two second rotor blades (3a, 3b),
  • the ratio of the blade field velocities acting on the rubber composition during step A) in the mixing chamber of the first mixer to the blade field velocities acting on the rubber composition during step C) in the mixing chamber of the second mixer is in the range from 1,000,000:1 to 1.01:1 , preferably in the range from 100,000:1 to 5:1, particularly preferably in the range from 10,000:1 to 10:1, very particularly preferably in the range from 500:1 to 100, and/or
  • the vane field speeds acting on the rubber mixture during step A) in the mixing chamber of the first mixer is in the range from 10 m/s to 300 m/s, preferably in the range from 20 m/s to 200 m/s, particularly preferably in the range of 30 m/s to 150 m/s, very particularly preferably in the range from 40 m/s to 100 m/s, and or
  • vane field speeds in the mixing chamber of the second mixer is in the range from 1 m/s to 80 m/s, preferably in the range from 3 m/s to 50 m/s, particularly preferably in the range from 3 m/s to 30 m/s, very particularly preferably in the range from 5 m/s to 30 m/s.
  • the second mixer has a feed unit for feeding rubber compound ingredients into the sub-chamber housing, preferably a feed unit for feeding vulcanizing agents into the mixing chamber of the second mixer, wherein between steps A) and C) or during the Step A) and/or C) vulcanizing agents are transferred to the mixing chamber of the second mixer, so that an unvulcanized finished rubber mixture is produced in step C).
  • a device for producing a rubber compound which comprises the following components:
  • a first mixer comprising a mixing chamber with at least one first mixing rotor (1), the mixing chamber of the first mixer
  • each of the at least one first mixing rotors (1) having a mixer rotor core (2) and at least two first rotor blades (3a, 3b), the ratio of the total volume of all the first rotor blades (3a, 3b) of all first mixing rotors (1) to the mixing volume of the mixing chamber of the first mixer (1) represents a first volume ratio, a second mixer comprising a mixing chamber with at least one second mixing rotor (1), the mixing chamber of the second mixer - has a second chamber volume and
  • the at least one second mixing rotor (1) having a mixer rotor core (2) and at least two second rotor blades (3a, 3b), the ratio of the total volume of all the second rotor blades ( 3a, 3b) of all second mixing rotors (1) to the mixing volume of the mixing chamber of the second mixer represents a second volume ratio, the ratio of the second chamber volume of the mixing chamber of the second mixer to the first chamber volume of the mixing chamber of the first mixer being in the range from 15:1 to 1 :1, characterized in that the ratio of said first volume ratio to said second volume ratio is in the range of 50:1 to 1:10, preferably in the range of 20:1 to 1:1, preferably in the range of 15:1 to 1.1:1, more preferably in the range of 10:1 to 2:1.
  • the rubber compound comprises silica
  • the silica content of the rubber compound is preferably in the range from 1 phr to 200 phr and/or less than 0.1 phr carbon black in the Rubber mixture are present, the silica content is particularly preferably in the range from 40 phr to 190 phr, the silica content is very particularly preferably in the range from 60 phr to 180 phr, in particular the silica content is very particularly preferably in the range of 90 phr up to 170 phr.
  • the rubber compound comprises one or more silanes
  • the silane content of the rubber compound is preferably in the range from 0.01 phr to 50 phr, in particular the silane content is preferably in the range from 0.1 phr to 40 phr, the silane content is very particularly preferably in the range from 1 phr to 30 phr, In particular, the silane content is very particularly preferred in the range from 3 phr to 20 phr.
  • the rubber compound comprises at least one rubber selected from the group consisting of IIR, EPDM, NR, IR, SBR, SSBR and BR.
  • the volume ratio of the second chamber volume of the mixing chamber of the second mixer to the first chamber volume of the mixing chamber of the first mixer is in the range of 14:1 to 1.1:1, preferably in the range of 10:1 to 1.5:1, more preferably in the range of 5:1 to 2:1.
  • ratio of said first volume ratio to said second volume ratio is in the range of 5:1 to 1:10, preferably in the range of 1:1 to 1:10, more preferably in the range of 1 :1.01 to 1:10.
  • At least one first rotor blade (3a, 3b) or each first rotor blade (3a, 3b) of all mixing rotors (1) in the first mixer has a first aspect ratio, the first aspect ratio being formed from the Height of one of the first rotor blades (3a, 3b) to the effective diameter of said one first rotor blade (3a, 3b) is in the range of 50:1 to 1:10, preferably in the range of 20:1 to 1.01:1, particularly preferably in the range from 15:1 to 1.1:1, very particularly preferably in the range from 10:1 to 2:1, particularly very particularly preferably in the range from 8:1 to 5:1, and/or at least one second Rotor blades (3a, 3b) or every second rotor blade (3a, 3b) of all mixing rotors (1) in the second mixer has a second aspect ratio, the second aspect ratio being formed from the height of one of the second rotor blades (3a, 3b) to the effective Diameter of said
  • the ratio of the first aspect ratio to the second aspect ratio is in the range from 100:1 to 1:10, preferably in the range from 50:1 to 1.01:1, more preferably in the range from 20:1 to 1.1:1, very particularly preferably in the range from 20:1 to 2:1, in particular very particularly preferably in the range from 10: 1 to 5: 1.
  • the ratio of the minimum distance between the rotor blade tip (4) of a first rotor blade (3a, 3b) and the inner wall of the chamber housing of the first mixer to the minimum distance between the rotor blade tip (4) of a second rotor blade (3a, 3b) and the inner wall of the Chamber housing of the second mixer in the range from 10:1 to 1:50, preferably in the range from 5:1 to 1:20, particularly preferably in the range from 1:1 to 1:8, very particularly preferably in the range of 1:1, 1 to 1:2.
  • the first and second mixer each have two mixing rotors (1), the ratio of the minimum distance between the rotor blade tip (4) of a first rotor blade (3a, 3b) of a mixing rotor (1) of the first mixer and the outer wall (10) of the mixing rotor core (2) of the other mixing rotor (1) of the first mixer to the minimum distance between the rotor blade tip (4) of a second rotor blade (3a, 3b) of a mixing rotor (1) of the second mixer and the Outer wall (10) of the mixing rotor core (2) of the other mixing rotor (1) of the second mixer in the range of 50:1 to 1.01:1, preferably in the range of 20:1 to 1.1:1, particularly preferably in the range of 20:1 to 2:1, very particularly preferably in the range from 10:1 to 5:1. 25.
  • all mixing rotors (1) of the first mixer are intermeshing rotors and/or all
  • FIG. 1 A perspective view of a rotor of a device according to the invention, two sections A-A and B-B being drawn in in FIG. 1;
  • Figure 2 A cross-sectional view along section A-A of the device according to the invention shown in Figure 1;
  • Figure 3 A cross-sectional view along section B-B of the device according to the invention shown in Figure 1.
  • FIG. 1 shows a rotor as shown roughly in FIG. 3 of document DE 4129108 A1.
  • the various aspects of the present invention are to be described in more detail by way of example on the basis of the rotor 1 shown schematically in FIG.
  • the rotor 1 shown schematically in FIG. 1 has an axis 12, an axis of rotation 13, a mixer rotor core 2 with an outer surface 10 and two rotor blades 3a, 3b.
  • the rotor blade 3a tapering in the radial direction 15 has a clear rotor blade tip 4 and a weld seam 14 .
  • the truncated pyramid-like rotor blade 3b has an outer wall 6 with a Outer surface, a base surface 8 and a plurality of side walls 7, the base surface 8 of the rotor blade 3b of the rotor 1 being the surface which bears against the rotor core 2 of the rotor 1.
  • the outer surface of the outer wall of the rotor blade in the case of semi-circular or similarly shaped rotor blades corresponds exactly to the area which adjoins the line lying on said outer surface which has the smallest distance to the inner wall of the chamber housing and only one to 0, 5 mm greater distance to the inner wall of the chamber housing than said line.
  • FIG. 2 shows a diagrammatically illustrated cross-sectional view along section A-A of the device according to the invention shown in FIG.
  • the rotor 1 shown in FIG. 2 has an axis of rotation 13, a mixer rotor core 2 with an outer surface 10 and a radius 11 and two rotor blades 3a, 3b.
  • the pointed rotor blade 3a has a clear rotor blade tip 4 and a weld seam 14 and a height 5 .
  • the truncated pyramid-like rotor blade 3b has an outer wall 6 with an outer surface, a base 8 and a plurality of side walls 7 and a height 5, the base 8 of the rotor blade 3b of the rotor 1 being the surface which bears against the rotor core 2 of the rotor 1.
  • the maximum radius 9 of the rotor 2 extends in the radial direction 15 from the axis of rotation to the rotor blade tip 4 of the rotor blade 3a and in the radial direction 15 from the axis of rotation to the outer surface 10 of the rotor blade 3b.
  • FIG. 3 shows a diagrammatically illustrated cross-sectional view along section BB of the device according to the invention shown in FIG.
  • the rotor 1 shown in FIG. 2 has an axis of rotation 13, a mixer rotor core 2 with an outer surface 10 and with a radius 11 and the rotor blades 3b.
  • the truncated pyramid-like rotor blade 3b has an outer wall 6 with an outer surface, a base 8 and a plurality of side walls 7 and a height 5, the base 8 of the rotor blade 3b of the rotor 1 being the surface which bears against the rotor core 2 of the rotor 1.
  • the maximum radius 9 of the rotor 2 extends in the radial direction 15 from the axis of rotation to the outer surface 10 of the rotor blade 3b.

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)

Abstract

Dispositif de production d'un mélange de caoutchouc et/ou de composants de pneumatique de véhicule non vulcanisé et/ou d'un pneumatique de véhicule, comprenant un premier mélangeur comprenant une chambre de mélange présentant au moins un premier rotor de mélange et présentant un premier rapport de volume, et un second mélangeur comprenant une chambre de mélange présentant au moins un second rotor de mélange et présentant un second rapport de volume, le rapport dudit premier rapport de volume audit second rapport de volume étant compris entre 50:1 et 1:10. Sont également divulgués, l'utilisation du dispositif et un procédé de production de composants de pneumatique de véhicule non vulcanisé et/ou d'un pneumatique de véhicule.
EP21732307.0A 2020-07-09 2021-06-15 Procédé de production d'un mélange de caoutchouc et utilisation d'un dispositif convenant à la mise en ?uvre de ce procédé Pending EP4178777A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20184888.4A EP3936296A1 (fr) 2020-07-09 2020-07-09 Procédé de fabrication d'un mélange de caoutchouc, et utilisation d'un dispositif apte à la mise en oeuvre dudit procédé
PCT/EP2021/066027 WO2022008176A1 (fr) 2020-07-09 2021-06-15 Procédé de production d'un mélange de caoutchouc et utilisation d'un dispositif convenant à la mise en œuvre de ce procédé

Publications (1)

Publication Number Publication Date
EP4178777A1 true EP4178777A1 (fr) 2023-05-17

Family

ID=71574973

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20184888.4A Pending EP3936296A1 (fr) 2020-07-09 2020-07-09 Procédé de fabrication d'un mélange de caoutchouc, et utilisation d'un dispositif apte à la mise en oeuvre dudit procédé
EP21732307.0A Pending EP4178777A1 (fr) 2020-07-09 2021-06-15 Procédé de production d'un mélange de caoutchouc et utilisation d'un dispositif convenant à la mise en ?uvre de ce procédé

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20184888.4A Pending EP3936296A1 (fr) 2020-07-09 2020-07-09 Procédé de fabrication d'un mélange de caoutchouc, et utilisation d'un dispositif apte à la mise en oeuvre dudit procédé

Country Status (4)

Country Link
US (1) US20230302685A1 (fr)
EP (2) EP3936296A1 (fr)
CN (1) CN115768611A (fr)
WO (1) WO2022008176A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129108A1 (de) 1991-09-02 1993-03-04 Continental Ag Vorrichtung zum herstellen von kautschukmischungen
DE4309451A1 (de) 1993-03-24 1994-09-29 Continental Ag Verfahren zur Herstellung von Kautschukmischungen
DE4310356A1 (de) 1993-03-30 1994-10-06 Continental Ag Vorrichtung zum Verarbeiten von nicht reaktive Zusatzstoffe enthaltende Kautschukmischungen zu Kautschukfertigmischungen
DE10061473A1 (de) * 2000-12-08 2002-07-18 Continental Ag Verfahren zur Herstellung einer kieselsäurehaltigen Kautschukgrundmischung
EP1382425B1 (fr) * 2002-07-12 2006-08-23 Continental Aktiengesellschaft Procédé de réalisation de mélanges de caoutchoucs
FR2978370B1 (fr) 2011-07-29 2013-08-16 Michelin Soc Tech Procede de fabrication d'une composition de caoutchouc a haute temperature
CN207630307U (zh) * 2017-12-15 2018-07-20 四川安费尔高分子材料科技有限公司 一种高效率密炼机
CN209699635U (zh) * 2018-09-16 2019-11-29 南京亚通橡塑有限公司 一种密炼机
DE102018222073A1 (de) * 2018-12-18 2020-06-18 Continental Reifen Deutschland Gmbh Vorrichtung zum Herstellen einer Kautschukmischung durch Mischen von Kautschukmischungsbestandteilen und Verwendung einer Extraktionseinheit sowie Verfahren zum Herstellen einer Kautschukmischung aus Kautschukmischungsbestandteilen

Also Published As

Publication number Publication date
EP3936296A1 (fr) 2022-01-12
US20230302685A1 (en) 2023-09-28
CN115768611A (zh) 2023-03-07
WO2022008176A1 (fr) 2022-01-13

Similar Documents

Publication Publication Date Title
EP0490056B1 (fr) Procédé et dispositif pour la fabrication continue et directe d'un mélange à base de caoutchouc et d'un mélange fini de caoutchouc pour pneumatiques de véhicules, pour courroies de transmission, pour bandes de transport ainsi que pour des articles techniques en caoutchouc dans un seule installation de mélange
DE2133320C3 (de) Verfahren zum Herstellen eines Formkörpers mit mindestens einem durchgehenden Hohlraum aus einem mit Flüssigkeit abbindenden pulverförmigen und einem festigen Bestandteil
EP3386702B1 (fr) Dispositif pour la fabrication d'un mélange fini de caoutchouc contenant au moins un additif réactif
EP1649995B1 (fr) Mélangeur interne pour pétrir des matières plastiques
EP3473395B1 (fr) Arbre de vis sans fin asymétrique, à trois ailettes, pour une machine de mélange et de malaxage
DE2925250A1 (de) Misch- und knetmaschine
DE2608775C2 (de) Verfahren zur kontinuierlichen Herstellung einer Formmassenmischung und Vorrichtung zur Durchführung des Verfahrens
EP0616877B1 (fr) Procédé pour la fabrication de mélange de caoutchouc
EP0424490B1 (fr) Procede et dispositif pour produire une poudre de charge propulsive tribasique
EP1397239B1 (fr) Procedes de fabrication d'un element structural
DE102015120585B4 (de) Anlage zur kontinuierlichen Aufbereitung von Gummimassen mit Fasspresse
DE102019219372A1 (de) Verfahren zur Devulkanisation einer vulkanisierten Kautschukmischung, Vorrichtung zur Durchführung des Verfahrens und die Verwendung der Vorrichtung zur Devulkanisation einer vulkanisierten Kautschukmischung
WO2022008176A1 (fr) Procédé de production d'un mélange de caoutchouc et utilisation d'un dispositif convenant à la mise en œuvre de ce procédé
EP1213110B1 (fr) Procédé pour la préparation d'une composition de caoutchouc contenant de la silice
DE60004977T2 (de) Verfahren zur herstellung einer mit silica verstärkten kautschukzusammensetzung
EP1743905B1 (fr) Procédé et appareil pour la préparation de nitrate de cellulose stabilisé
DE102015120583A1 (de) RingExtruder zur kontinuierlichen Aufbereitung von Gummimassen mit Co-Extruder
DE102020209824A1 (de) Verfahren zum Herstellen von Kautschukmischungen in einer mindestens zwei Mischkammern umfassenden Mischvorrichtung, Vorrichtung zur Durchführung des Verfahrens sowie eine Verwendung der Vorrichtung
DE102022210592A1 (de) Anlage zur Herstellung eines extrudierten Silikon-Halbzeuges, Verwendung eines gleichlaufenden Doppelschneckenextruders sowie Verfahren zur Herstellung eines Silikon-Roh-Extrudates
DE102020202100A1 (de) Vorrichtung zum Mischen von Kautschukmischungen, Verfahren zur Herstellung einer Kautschukmischung und entsprechende Verwendungen der Vorrichtung
EP0023715A1 (fr) Procédé pour préparer des articles en caoutchouc
EP3782787B1 (fr) Procédé et dispositif de fabrication d'un mélange de caoutchouc, ainsi que l'utilisation associée de la radiation thermique pour chauffer les ingrédients d'un mélange de caoutchouc
DE4012294C1 (fr)
DE102018220593A1 (de) Vorrichtung zum Mischen von Kautschukmischungen, Verfahren zum Herstellen von Fahrzeugluftreifen sowie die Verwendung der Vorrichtung
DE60027166T2 (de) Verfahren zur Regelung des Produktionsablaufs in einem Mischgerät

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230209

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CONTINENTAL REIFEN DEUTSCHLAND GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20240404