CN105666718A

CN105666718A - Method and device for producing tires

Info

Publication number: CN105666718A
Application number: CN201610077755.0A
Authority: CN
Inventors: S·泰斯逖; A·伯特姆雷; A·隆格尼
Original assignee: Pirelli Pneumatici SpA
Current assignee: Pirelli and C SpA; Pirelli Tyre SpA
Priority date: 2008-12-23
Filing date: 2008-12-23
Publication date: 2016-06-15

Abstract

The invention discloses a mixing device (100) suitable for processing high-quality and high-productivity elastomer adhesive materials for tires. According to the mixing device, at least one batch mixing device (101) is combined with at least one multi-shaft continuous mixing device (106) with a plurality of shafts; for example, the multi-shaft continuous mixing device may be an annular extruder with a plurality of co-rotating screws which are arranged to form a ring; and during operation, a first elastomer adhesive material (104) is discharged from the at least one batch mixing device (101), and processed by the at least one multi-shaft continuous mixing device (106) to obtain a second elastomer adhesive material (108).

Description

The method and apparatus producing tire

The application be based on application number be 200880132649.1, the applying date is December in 2008 23 days, denomination of invention is the divisional application of Chinese patent application of " method and apparatus producing tire ".

Technical field

The present invention relates to the method and apparatus producing tire. The present invention also relates to the method and apparatus producing elastomer glue stock.

More specifically, the present invention relates to the method and apparatus producing tire, the at least one elastomer glue stock wherein used in manufacturing one or more structural tyre element, is at least one mixing step by carrying out at least one batch melting device and at least one mixing step production carried out in multiaxis continuous mixing device.

Background technology

Generally, the production of the elastomer glue stock used in Tire production, carried out by batch melting device in batches, for instance, banbury, as having two counter-rotating rotorsMixing roll, wherein said counter-rotating rotors plays strong mixing effect to pulverize described elastomeric polymer, and other component that will be typically found in elastomer glue stock, for instance reinforcer, lubricating auxiliary agent, vulcanizing agent and other additive introduce and be sufficiently dispersed in wherein.

Using batch melting device production elastomer glue stock to demonstrate many shortcomings, particularly poor heat dissipation and therefore not enough temperature control, mainly due to the inappropriate ratio between material volume and mixing roll surface area. In order to improve the dispersibility in elastomeric polymer, generally by described different component, particularly described reinforcer, distribute in batches and be incorporated in described elastomeric polymer in passing through cooling and storing step multiple mixing action separately. Generally, temperature sensitive component, for instance cross-linking agent and accelerator, adds only in during final mixing step, add after described elastomer glue stock is cool below predetermined temperature (being usually less than 110 DEG C), to avoid too early crosslinking (" incipient scorch " phenomenon).

Therefore, use batch melting device production elastomer glue stock, although remaining most widely used production method in tire industry, but consuming time and power consumption, and it cannot be guaranteed that efficiently control the performance of the elastomer glue stock obtained, particularly in reinforcer dispersing uniformity in described elastomeric polymer. The addition of independent component, add time and the change of the fluctuation of the time of discharge, raw-material initial temperature and described material internal shearing force of mixing period from mixing roll, the change between resulting in batch.

In order to overcome the limitation of batch process disclosed above, rubber industry has been done many trials and has been built the production method based on extruding technology, is similar to those employing in thermoplastic, polymeric materials is processed usual.

Such as, US Patent No. 4,897,236 discloses the method and apparatus producing rubber composition continuously, wherein by the charging in double screw extruder of the component of described mixture, mastication homogenizing. Obtained mixture is divided into the first and second parts. Discharging Part I, simultaneously recirculation Part II is for further homogenizing mixing with the fresh batch of material of the component waiting to be fed in described extruder. The part of described recirculation is recycled to the annular compartment of described extruder exterior thereto cooling and returns, and described annular compartment has and the outflow communicated inside described extruder and flow channel.

US Patent No. 5,626,420 discloses continuous mixing method and apparatus, and wherein foundation elasticity body and other component are continuously metered and are incorporated into the mixing room formed by stator and the rotor that rotates wherein, it is preferable that single screw extrusion machine. The component introduced is advanced along propelling and mixing region in mixing room. In order to improve dispersibility and the homogeneity of described rubber components, the filling ratio of described mixing room at least some of mixing district lower than 1. In order to suitably described component particularly described rubber base material is incorporated into described mixing room, employ the means of forced feed, for instance displacement pump (such as gear pump).

U.S. Patent application US2004/0094862 discloses the multiple screw extruder with at least two axle, for the elastomer that mixing and/or molding and filler are staggered, particularly staggered with at least softening agent and/or additive rubber. Described extruder includes following composition in succession along Transmission direction: feed zone, and described elastomer and softening agent and/or additive metering enter wherein; Having the mastication/plasticizing zone of at least one kneading member, described elastomer and softening agent and/or additive are transferred to the mixture wherein becoming flowable, cohesion; There is the dispersion area of at least one extra kneading member, wherein the filler in described elastomer crushed and distribution; And there is the kneading member of comb and there is the extruder of inner walls, and between the inner walls of the comb of described kneading member and described extruder, wherein there is the gap with gap width Z is described kneading member diameter D about 1/100 to about 1/10. In one embodiment, described multiple screw extruder is ring extruder.

PCT Patent application number WO03/009989 discloses the method and apparatus being produced elastic composition by least one extruder continuously, and wherein accessory constituent uses with the form of subdivided product. Described product includes at least one in described accessory constituent and is dispersed in thermoplastic binding agent and is transported to proportioning device accurately to measure and to be fed continuously in described extruder by pneumatic conveying line.

Summary of the invention

Applicant have noted that the quality of the elastomer glue stock for tire by using batch melting device to prepare is likely to unsatisfactory: particularly, be likely to be obtained the mechanical performance change between different batches, and the dispersibility of reinforcer be sometimes likely to poor.

Usually, in order to improve the dispersibility of described reinforcer, the number of mixing step can be increased. But, increase the number of mixing step in batch melting device, it is possible to create many shortcomings, for instance, the infringement to elastomeric polymer, worsens the mechanical performance of described elastomer glue stock, the crosslinking (" incipient scorch " phenomenon) too early of described elastomer glue stock.

On the other hand, it has proved that use continuous mixing device to replace batch melting device can obtain high-quality elastomer glue stock. But, by one of aspect of continuous mixing device production elastomer glue stock most critical, for instance, double screw extruder, is the feed system of all components entrance continuous mixing device of described elastomer glue stock. It is true that (such as, pelletize, granulation, segmentation etc.) described component must be processed and accurately measures to be fed in described continuous mixing device. Due to these reasons, it should provide complicated feed system, its increase causing total production and processing time and the increase of the volume of equipment requirements related to: which results in being significantly increased of total production cost.

Applicant have discovered that, in the compounding devices reducing complexity, by using at least one mixing step production elastomer glue stock that there is at least one mixing step carried out at least one batch melting device and carry out at least one continuous mixing device, it is possible to obtain high-quality elastomer glue stock.

In particular, it was found that obtained elastomer glue stock shows the dispersibility that reinforcer significantly improves, and the mechanical performance improved (static and dynamically both). The elastomer glue stock obtained described in also demonstrating has important repeatability in the result that mechanical properties obtains.

But, occur in that another problem: batch melting device and continuous mixing device are very different machines in maximum output. Although batch melting device can produce elastomer glue stock being not less than 1000-2000kg/hour preferably more volume of production (having many batches), but general continuous mixer such as double screw extruder is little to reach the volume of production of such production elastomer glue stock. Being different from thermoplasticity sizing material, elastomer glue stock does not have fusing point, is thermal sensitivity and the generation due to incipient scorch phenomenon and/or thermal response, is prone to when using high screw speed, and/or high-rate of shear, and/or high-energy to improve volume of production degrade. This is owing to passing through the heat that in space limited between described screw rod and screw channel wall, kneading effect produces, and the pressure produced in twin screw mouth die exit, particularly when using fixing die head. These defects occur significantly, even for there is medium-viscosity (such as, from at least 50-60 Mooney viscosity ML (1+4), at 100 DEG C) elastomer glue stock, namely they be applicable to essentially all of at the normally used elastomer glue stock of tire art.

This limits consumingly and produces the accessible volume of production of elastomer glue stock by common continuous mixer. For example, it has been found that there is the double screw extruder that screw diameter is 40mm generally can reach the volume of production of the viscous elastomer sizing material lower than 40-50kg/hour, namely at least below by 50 times of the available general volume of production of batch melting device. The increasing not cause of double screw extruder size is markedly improved in the volume of production obtained: such as, have been found that the screw diameter extremely about 90mm increasing double screw extruder, the volume of production causing viscoelasticity sizing material is approximately 200-250kg/hour, namely at least low 5-10 times than by the available general volume of production of batch melting device. In this, also allow for the relevant increase of the length increasing generally adjoint described double screw extruder of screw diameter, and the increase of the complexity of described machine and cost, especially because the power for rotating the screw rod used in heavy-duty machines required.

Thus the applicant has understood, in order to provide the compounding devices being suitable for processing the viscoelastic body sizing material with high-quality and high-throughput, to comply with the requirement of general tyre production device, the combination of the multiaxis continuous mixing device that at least one batch melting device and at least one have many axles (such as, have 12 and substantially arrange the ring extruder of rotating Vortex screw rods forming a circle) should be provided.

Having been found that many axles allow the volume of production of continuous mixing device is brought up to the value that can match with the volume of production of batch melting device, without by screw speed, and/or shear rate, and/or screw diameter increases to the value that can cause described sizing material incipient scorch. Additionally, it turned out at the preparation of batch melting device and the superior quality of the sizing material of processing in multiaxis continuous mixing device subsequently. Even if it addition, have the machine of low screw diameter, it is also possible to obtain the volume of production wanted, the length of so described multiaxis continuous mixing device can also keep of a sufficiently low, is have benefited from the processing that many parallel kneading screws carry out. Except the length that described multiaxis continuous mixing device reduces, the compounding devices comprising at least one batch melting device and at least one multiaxis continuous mixing device need not be used for the complicated feed system of continuous mixing device charging, so can advantageously comprise total size of compounding devices. This is very big advantage, when described compounding devices is whole tyre production device a part of, here further for providing much equipment and space to compounding relevant equipment, it is for example adapted for preparing half-finished equipment, manufacture the machine of unvulcanized tire (greentyre), vulcanizing press, tire quality control area etc.

Purpose for present specification and following claims, described term " batch melting device " refers to a kind of mixing device, enter the component of described elastomer glue stock therein be periodically according to predetermined amount (in batches) charging and mixing predetermined time to obtain described elastomer glue stock. When described mixing step terminates, the elastomer glue stock obtained is discharged completely from described mixing device.

Purpose for present specification and following claims, described term " continuous mixing device " refers to a kind of mixing device, entering the processed material to obtain elastomer glue stock therein is charging continuously (except the stopping making mixing device possible owing to maintaining or change elastomer precursor gum material formula), and described elastomer glue stock is discharged from the form of continuous logistics, contrary with the periodicity charging/discharge of described batch melting device.

According to first aspect, the present invention relates to the method manufacturing tire, including:

-at least one crosslinkable elastomer glue stock is provided;

-manufacturing multiple structural details of described tire, at least one structural detail in wherein said multiple structural details comprises the crosslinkable elastomer glue stock of described at least one;

-use described multiple structural details to manufacture unvulcanized tire;

-mold and cross-link to obtain finished tire to described unvulcanized tire;

The offer of wherein said at least one crosslinkable elastomer glue stock includes:

-at least one elastomeric polymer and at least one reinforcer are fed in the mixing facilities including at least one batch melting device;

-in described mixing facilities, by mixing for described at least one reinforcer and be distributed in described at least one elastomeric polymer, to obtain the first elastomer glue stock;

-described first elastomer glue stock is discharged from described mixing facilities;

-described first elastomer glue stock is fed at least one multiaxis continuous mixing device, described multiaxis continuous mixing device includes at least six rotary screw;

-by least one multiaxis continuous mixing device described in the described first mixing entrance of elastomer glue stock, to obtain the second elastomer glue stock.

According to another aspect, the present invention relates to the device manufacturing tire, including:

-it is suitable for producing the kneading device of at least one crosslinkable elastomer glue stock;

-at least one be adapted for use with multiple structural detail manufacture unvulcanized tire production machine;

-at least one equipment being suitable for preparing at least one structural detail of the plurality of structural detail, at least one wherein said structural detail comprises the crosslinkable elastomer glue stock of described at least one;

-at least one be suitable for molding and cross-link described unvulcanized glue of taking turns to obtain the vulcanizing press of finished tire;

Wherein said kneading device includes:

-including the mixing facilities of at least one batch melting device, described mixing facilities is suitable for producing the first elastomer glue stock;

-at least one multiaxis continuous mixing device, described multiaxis continuous mixing device comprises at least six rotary screw, and described multiaxis continuous mixing device is suitable for receiving described first elastomer glue stock and producing the second elastomer glue stock.

According to further aspect, the present invention relates to the method producing elastomer glue stock, including:

According to further aspect, the present invention relates to the device producing elastomer glue stock, including:

-at least one includes the mixing facilities of at least one batch melting device, described mixing facilities is suitable for producing the first elastomer glue stock;

Applicant have discovered that, relative to described first elastomer glue stock, described second elastomer glue stock discharged from described multiaxis continuous mixing device demonstrates the dispersibility significantly improved of described at least one reinforcer, and suitable or even more excellent mechanical performance (static and dynamically both).

The present invention, in above-mentioned at least one, it is possible to demonstrate the characteristic of one or more preferred following discloses.

According to yet other embodiments, the method for described production elastomer glue stock can be located continuously or discontinuously carry out.

When described method carries out continuously, directly described first elastomer glue stock is fed at least one multiaxis continuous mixing device part described and does not store.

When described method carries out discontinuously, after storage, described first elastomer glue stock is fed at least one multiaxis continuous mixing device described.

According to yet other embodiments, described batch melting device is selected from banbury, mill. Particularly preferably banbury.

Generally, described batch melting device includes that a pair mutually tangential each other or the rotor of IPN operating.

Generally, described batch melting device includes the mixing room of the rotor that inner containment rotates for a pair in the opposite direction, with the mixing described component being introduced into described mixing room from its top.

For this purpose, described batch melting device is generally equipped with the pneumatically or hydraulically machine barrel being positioned at part on described mixing room and the piston that can move up to open described mixing room, thus allowing to introduce described component by special load hopper, and move downward and produce pressure to by rotor machining and the material that is located thereon.

Described elastomer glue stock is discharged when mixing loop ends by the hydraulic system permission of the bottom being positioned at described mixing room by opening suitable outlet.

Object lesson according to the banbury that the present invention can advantageously use, is in trade nameOrUnder known those, depend on that rotor is tangentially operating or IPN each other. Particularly preferablyMixing roll.

The object lesson of the mill that can advantageously use according to the present invention is: mill blender, Z-blade mixer. Particularly preferably mill blender.

According to a preferred embodiment, mixing at least one batch melting device described can carry out under about 20rpm to about 60rpm in rotor speed, it is preferred to about 30rpm to about 50rpm.

According to further preferred embodiment, mixing at least one batch melting device described, the fill factor number of the total free volume being occupied described mixing room by mixing material (fill factor be) of described mixing room can be used not higher than about 80%, it is preferable that carry out for about 55% to about 70% time. If selecting too high fill factor, lacking free volume and prevent the movement of material and intersect blended, becoming problem so that mixing fully. Similarly, iff have selected very little fill factor, it is difficult to guarantee with high shear force mixing fully, and the homogenizing fully of the material in described mixing room.

According to a preferred embodiment, at least one multiaxis continuous mixing device described comprises at least six rotating Vortex screw rod. Described screw rod preferred disposition is to form a circle. More preferably at least one multiaxis continuous mixing device described comprises at least ten two rotary screws, more preferably rotating Vortex screw rods.

Described rotary screw can comprise height-shearing mixing elements, for instance kneader or have the screw flight of the low depth of thread. Described screw shaft is preferably parallel.

Preferably, described screw rod is engagement at least partly. It is highly preferred that described screw rod substantially completely engages. It is highly preferred that described screw rod is self-cleaning.

Preferred screw diameter scope is from least 30mm, more preferably from least 60mm.

Preferably, described multiaxis continuous mixing extruder is ring extruder, including:

-inner core (or mandrel);

-define the shell of annular compartment with described inner core;

-at least six is more preferably at 12 screw rods being rotatably mounted in described annular compartment.

In preferred embodiments, described ring extruder includes the air vent provided at described shell, to allow the removing of volatile material. Vacuum can be advantageously applied for described air vent, to promote the extraction of volatile material further.

The test (particularly when vacuum is applied to the air vent provided in the enclosure) carried out on ring extruder as disclosed above, it is advantageous to show that the elastomer glue stock discharged in the outlet of described ring extruder is formed as substantially zero tendency for bubbling. According to the applicant, this is the swept volume of the increase due to ring extruder offer, and it can effectively remove (by described air vent) air due to the exchange surface of described inner core and the increase of described shell offer or other is trapped in by the volatile matter in mixing elastomer glue stock.

According to a preferred embodiment, described mixing at least one multiaxis continuous mixing device described, it is possible to carry out under about 10rpm to about 600rpm in screw rod velocity of rotation, it is preferred to about 40rpm to about 400rpm.

It should be noted that, described screw rod velocity of rotation allows to obtain described composition particularly described reinforcer extraordinary dispersibility in described second elastomer glue stock, and if avoiding described second elastomer glue stock to use the too high contingent too early crosslinking of screw rod velocity of rotation (" incipient scorch " phenomenon).

Advantageously, described second elastomer glue stock from described multiaxis continuous mixing device, can be discharged with the average productive capacity of at least 500kg/h, it is preferable that at least 800kg/h. So, can reach and the total growth adapted with plant-scale tire production containing the kneading device including the mixing facilities that at least one batch melting device is combined with one or two multiaxis continuous mixing device.

In preferred embodiments, described first elastomer glue stock is fed to cooling before at least one multiaxis continuous mixing device described. Preferably, it is possible to described first elastomer glue stock is cooled to the temperature from about 15 DEG C to about 40 DEG C, more preferably from about 20 DEG C to about 25 DEG C.

Described compounding devices can include at least one conveying extruder.

According to a preferred embodiment, it was fed into before described first elastomer glue stock is fed at least one multiaxis continuous mixing device described at least one conveying extruder described.

According to a preferred embodiment, at least one conveying extruder described comprises:

-include at least one charging aperture and the shell of a discharge gate;

-at least one is installed in rotation on the delivery element in described shell.

For the purposes of the present invention, described term " delivery element " means substantially not have mixing effect and simply carries this elastomer glue stock element by extruder length. Such as, typical delivery element is selected from mainly promoting the element moved axially the such as helical type screw rod of material.

Exemplarily can carry out the conveying at least one conveying extruder described in delivery element speed from about 10rpm to about 60rpm, it is preferable that from about 20rpm to about 35rpm.

Can allow to control described first elastomer glue stock charging rate to described multiaxis continuous mixing device to the charging at least one conveying extruder described.

At least one conveying extruder described can be single helical type screw extruder, or has the unloading type extruder of two counter-rotating helical type screw rods.

According to further embodiment, described mixing facilities includes at least one banbury and at least one mill, and described mill is preferably placed at the downstream of described at least one banbury.

According to further embodiment, described second elastomer glue stock discharged from least one multiaxis continuous mixing device described, it is possible to be fed at least one further batch melting device. At least one further batch melting device described can be selected from disclosed above those.

According to further embodiment, at least one multiaxis continuous mixing device described can be placed on the upstream of the equipment of the structural detail preparing at least one unvulcanized tire, and described second elastomer glue stock is carried out, by described second elastomer glue stock discharged in described multiaxis continuous mixing device or use, the further sizing material that further mixing step obtains prepare by using by the structural detail of this unvulcanized tire.

The equipment being used for preparing the structural detail of described unvulcanized tire can be selected from commonly known in the art those, for instance, roll device and/or extruder device.

According to further embodiment, at least one multiaxis continuous mixing device described can directly equipped with roller die head or extrusion dies. Particularly when the latter, the outlet at least one multiaxis continuous mixing device described can directly obtain unvulcanized structural tyre element.

Described unvulcanized structural tyre element it may be that such as, the one in the different elastic construction elements of tire, for instance: bead-core, sidewall, crown, inner liner, end liner (underliner), wearing layer. According to methods known in the art, use suitable manufacture device to assemble described structural detail subsequently, obtain finished tire.

By using described second elastomer glue stock discharged by described multiaxis continuous mixing device, or the available another kind of structural detail of further sizing material that use obtains by described second elastomer glue stock carries out further mixing step is the ribbon element extended continuously. Formed during unvulcanized tire, it is possible to described continuous print ribbon element is laid on the support member in multiple winding (such as shaping reel), with formed multiple each other side by side and/or the continuous print coil that arranges of overlaying relation. In this way, the equivalent of many structural details of tire, obtain typically via semi-finished product, it is possible to formed by described screw winding. Such as, equivalent bead-core, sidewall, crown, inner liner, end liner (underliner), wearing layer can be obtained by the screw winding of continuous print ribbon element.

Described continuous print ribbon element can have flat shape of cross section as, rectangle, ellipse, crystalline lens or taper. The cross sectional dimensions of described continuous print ribbon element can be markedly inferior to the cross sectional dimensions of the described equivalent structural detail obtained by screw winding.

Directly in the outlet of described multiaxis continuous mixing device, described continuous print ribbon element can be obtained by suitable extrusion dies.

According to a preferred embodiment, all components of described crosslinkable elastomer glue stock is all fed at least one mixing facilities described.

Especially, except described at least one elastomeric polymer and described at least one reinforcer, in following components, at least one can join in described elastomer glue stock:

-vulcanizing agent, for instance sulfur, or the molecule containing sulfur (sulfur donor), or its mixture;

-activator, for instance zinc compound, particularly ZnO, ZnCO₃, containing the zinc salt from the saturated of 8 to 18 carbon atoms or unsaturated fatty acid, for instance zinc stearate, it is formed by ZnO and fatty acid in position preferably in described elastomer glue stock, and also has BiO, PbO, Pb₃O₄、PbO₂, or its mixture;

-accelerator, for instance dithiocar-bamate, guanidine, thiourea, thiazole, sulfenamide, thiuram, amine, xanthates, or its mixture;

The additive that-the application-specific be inclined to based on described compositions is selected, for instance antioxidant, antiaging agent, plasticizer (such as plasticising oil), binding agent, antiozonant, modified resin, or its mixture.

The above-mentioned component listed is used merely to illustrate in elastomer glue stock, and particularly some examples of normally used component most typically in Tire production elastomer glue stock, it should not be taken as the restriction of the scope of the invention.

When all components of described elastomer glue stock is all fed to batch melting device, for instance banbury asTime in mixing roll, can be mixing preferably at least two different step carries out, first step is unproductive step, wherein by these components except crosslinking can be promoted (such as, sulfur and accelerator) outer all components is all fed in described batch melting device, second step is productivity step, wherein by the described elastomer glue stock obtained from described first step and can promote crosslinking component be fed in described batch melting device.Again the elastomer glue stock (i.e. above-mentioned the first elastomer glue stock mentioned) so obtained is fed in multiaxis continuous mixing device to obtain the second elastomer glue stock subsequently.

Or, by described elastomer glue stock except can promote crosslinking component except all components, be fed in batch melting device, for instance banbury asMixing roll, to obtain the first elastomer glue stock, is fed in multiaxis continuous mixing device, to obtain the second elastomer glue stock subsequently. By the second elastomer glue stock so obtained and can promote crosslinking component, be fed to the further batch melting device being placed in described multiaxis continuous mixing device downstream subsequently, for instance banbury asIn mixing roll.

Or, by described elastomer glue stock except can promote crosslinking component except all components, be fed to batch melting device, for instance banbury asMixing roll, to obtain the first elastomer glue stock. By the first elastomer glue stock so obtained and the component that crosslinking can be promoted, it is fed in multiaxis continuous mixing device subsequently, to obtain the second elastomer glue stock.

When using mill as batch melting device, it is preferable that all components of described elastomer glue stock is all fed to described mill to obtain the first elastomer glue stock, is fed in multiaxis continuous mixing device subsequently, to obtain the second elastomer glue stock.

Method of compounding according to aspects of the present invention and device can be used to produce the usual reinforcer elastomer glue stock used in Tire production of the elastomeric polymer comprising any kind and any kind.

Preferably, described elastomeric polymer can be selected from, for instance, diene elastomeric polymer and monoolefine elastomeric polymer, or its mixture.

Diene elastomeric polymer can be selected from, for instance, glass transition temperature (Tg) is generally below 20 DEG C preferably in from the elastomer polymer with unsaturated chain of about 0 DEG C to about-110 DEG C or copolymer. these polymer or copolymer can be natural origin or can by optionally blended with at least one comonomer selected from monovinylarene and/or the polar comonomers polymerisation in solution of one or more conjugated dienes, emulsion is polymerized or gas-phase polymerization obtains. preferably, obtained polymer or copolymer contain the described at least one comonomer selected from monovinylarene and/or polar comonomers, and its amount is less than 60wt%. the example of diene elastomeric polymer is: cis-1, 4-polyisoprene is (natural or synthesis, preferred natural rubber), 3, 4-polyisoprene, poly-1, 3-butadiene (particularly high-vinyl poly-1, 3-butadiene, have 1, the content of 2-polymerized unit is from about 15wt% to about 85wt%), polychlorobutadiene, isoprene/the isobutylene copolymers of optional halo, 1, 3-butadiene/acrylonitrile copolymer, 1, 3-butadiene/styrene copolymers, 1, 3-butadiene/isoprene copolymer, isoprene/styrol copolymer, isoprene/1, 3-Butadiene/Styrene terpolymer, or its mixture.

As for monoolefine elastomeric polymer, they can be selected from, for instance, ethylene and at least one alpha-olefin with 3 to 12 carbon atoms, and optionally with the copolymer of the diene with 4 to 12 carbon atoms; Polyisobutylene; The copolymer of isobutene. and at least one diene. It particularly preferably is: ethylene/propene copolymer (EPR); Ethylene/propylene/diene terpolymers (EPDM);Polyisobutylene; Butyl rubber; Halogenated butyl rubber; Or its mixture.

Preferred described at least one reinforcer can be selected from, for instance: white carbon black, silicon dioxide, aluminium oxide, aluminosilicate, calcium carbonate, Kaolin, or its mixture.

When there is the silica containing reinforcer of bag, described elastomer glue stock can be advantageously introduced into the coupling agent that can interact and be connected to described elastomer polymer during vulcanizing with silicon dioxide. Coupling agent particularly preferably is double; two (3-triethoxysilylpropyl)-tetrasulfide or double; two (3-triethoxysilylpropyl)-disulphide. Described coupling agent can so use or use to promote that they are incorporated in described elastomer glue stock as suitable mixture with inert filler (such as white carbon black).

Embodiment of the present invention include:

1. the method manufacturing tire, including:

-at least one crosslinkable elastomer glue stock is provided;

-use the plurality of structural detail to manufacture unvulcanized tire;

-mold and cross-link to obtain finished tire to described unvulcanized tire;

-described first elastomer glue stock is fed at least one multiaxis continuous mixing device, at least one multiaxis continuous mixing device described includes at least six rotary screw;

2. the method according to embodiment 1, at least one batch melting device wherein said is selected from banbury or mill.

3. the method according to embodiment 1 or 2, wherein mixing at least one batch melting device described is carry out under about 20rpm to about 60rpm in rotor speed.

4. the method according to embodiment 3, wherein mixing at least one batch melting device described is carry out under about 30rpm to about 50rpm in rotor speed.

5. the method according to aforementioned any one embodiment, wherein mixing at least one batch melting device described is to carry out not higher than about 80% in the fill factor using mixing room.

6. the method according to embodiment 5, wherein mixing at least one batch melting device described is to carry out from about 55% to about 70% in the fill factor using mixing room.

7. the method according to aforementioned any one embodiment, at least one multiaxis continuous mixing device wherein said contains at least six rotating Vortex screw rod.

8. the method according to aforementioned any one embodiment, at least one multiaxis continuous mixing device wherein said contains at least ten two rotary screws.

9. the method according to aforementioned any one embodiment, wherein said rotary screw has the diameter of at least 30mm.

10. the method according to embodiment 9, wherein said rotary screw has the diameter of at least 60mm.

11. the method according to aforementioned any one embodiment, at least one multiaxis continuous mixing device wherein said is ring extruder.

12. the method according to embodiment 11, wherein said ring extruder includes:

-inner core;

-define the shell of annular compartment with described inner core;

-at least six is rotatably mounted to the screw rod in described annular compartment.

13. the method according to embodiment 11 or 12, wherein said ring extruder includes the air vent at least provided at described shell.

14. the method according to embodiment 13, further include in described ring extruder during mixing described first elastomer glue stock, apply vacuum at least one air vent described.

15. the method according to aforementioned any one embodiment, wherein mixing at least one multiaxis continuous mixing device described and about carries out between 600rpm at about 10rpm in screw rod velocity of rotation.

16. the method according to embodiment 15, wherein mixing at least one multiaxis continuous mixing device described and about carries out between 400rpm at about 40rpm in screw rod velocity of rotation.

17. the method according to aforementioned any one embodiment, wherein before described first elastomer glue stock is fed at least one multiaxis continuous mixing device described, it is fed at least one conveying extruder.

18. the method according to aforementioned any one embodiment, the offer of wherein said at least one crosslinkable elastomer glue stock includes being fed at least one further batch melting device described second elastomer glue stock.

19. the method according to aforementioned any one embodiment, farther include the average productive capacity with at least 500kg/h and described second elastomer glue stock is discharged from described multiaxis continuous mixing device.

20. manufacture the device of tire, including:

-it is suitable for producing the compounding devices of at least one crosslinkable elastomer glue stock;

-at least one device being suitable for preparing at least one structural detail in the plurality of structural detail, at least one structural detail wherein said comprises the crosslinkable elastomer glue stock of described at least one;

-at least one be suitable for molding and cross-link described unvulcanized tire to obtain the vulcanizing press of finished tire;

Wherein said compounding devices includes:

-mixing facilities containing at least one batch melting device, described mixing facilities is suitable for producing the first elastomer glue stock;

21. the device according to embodiment 20, at least one batch melting device wherein said is selected from banbury or mill.

22. the device according to any one of embodiment 20 or 21, at least one multiaxis continuous mixing device wherein said contains at least six rotating Vortex screw rod.

23. the device according to any one of embodiment 20 to 22, at least one multiaxis continuous mixing device wherein said contains at least ten two rotary screws.

24. the device according to any one of embodiment 20 to 23, wherein said rotary screw has the diameter of at least 30mm.

25. the device according to embodiment 24, wherein said rotary screw has the diameter of at least 60mm.

26. the device according to any one of embodiment 20 to 25, at least one multiaxis continuous mixing device wherein said is ring extruder.

27. according to the device described in embodiment 26, wherein said ring extruder includes:

-inner core;

-define the shell of annular compartment with described inner core;

28. the device according to embodiment 26 or 27, wherein said ring extruder includes the air vent at least provided at described shell.

29. the device according to any one of embodiment 20 to 28, wherein said at least six screw rod is engagement at least partly.

30. the device according to any one of embodiment 20 to 29, wherein said mixing facilities includes at least one mill.

31. the device according to any one of embodiment 20 to 29, wherein said mixing facilities includes at least one banbury and at least one mill, and described mill is placed on the downstream of described at least one banbury.

32. the device according to any one of embodiment 20 to 31, further contained at least one the conveying extruder between described mixing facilities and at least one multiaxis continuous mixing device described.

33. the device according to embodiment 32, at least one conveying extruder wherein said includes:

-include at least one charging aperture and the shell of a discharge gate;

34. the device according to any one of embodiment 20 to 33, wherein providing further batch melting device in the downstream of described multiaxis continuous mixing equipment, described further batch melting device is suitable for carrying out mixing further to described second elastomer glue stock.

35. the device according to any one of embodiment 20 to 34, the outlet of at least one wherein said multiaxis continuous mixing device is equipped with roller die head or fixing die head.

36. the device according to any one of embodiment 20 to 34, the outlet of at least one wherein said multiaxis continuous mixing device is uncovered head.

37. the device according to any one of embodiment 20 to 36, wherein said compounding devices comprises at least two multiaxis continuous mixing devices.

38. the method producing elastomer glue stock, including:

-at least one mixing facilities described, by mixing for described at least one reinforcer and be distributed in described at least one elastomeric polymer, to obtain the first elastomer glue stock;

39. the method producing elastomer glue stock according to embodiment 38, wherein said method located continuously or discontinuously carries out.

40. the method producing elastomer glue stock according to any one of embodiment 38 or 39, at least one multiaxis continuous mixing device wherein said comprises at least six rotating Vortex screw rod.

41. the method producing elastomer glue stock according to any one of embodiment 30 to 40, at least one multiaxis continuous mixing device wherein said comprises at least ten two rotary screws.

42. the method producing elastomer glue stock according to any one of embodiment 38 to 41, at least one multiaxis continuous mixing device wherein said is ring extruder.

43. the method producing elastomer glue stock according to embodiment 42, wherein said ring extruder includes:

-inner core;

-define the shell of annular compartment with described inner core;

44. the method producing elastomer glue stock according to embodiment 42 or 43, wherein said ring extruder includes the air vent at least provided at described shell.

45. the method producing elastomer glue stock according to embodiment 44, further include in described ring extruder during mixing described first elastomer glue stock, apply vacuum at least one air vent described.

46. the method producing elastomer glue stock according to any one of embodiment 38 to 45, wherein mixing at least one multiaxis continuous mixing device described and about carries out between 600rpm at about 10rpm in screw rod velocity of rotation.

47. the method producing elastomer glue stock according to embodiment 46, wherein mixing at least one multiaxis continuous mixing device described and about carries out between 400rpm at about 40rpm in screw rod velocity of rotation.

48. the method producing elastomer glue stock according to any one of embodiment 38 to 47, before wherein described first elastomer glue stock is fed at least one multiaxis continuous mixing device described, it is fed at least one conveying extruder.

49. the method producing elastomer glue stock according to embodiment 48, the conveying at least one conveying extruder described of wherein said first elastomer glue stock carries out from about 10rpm to about 60rpm in delivery element speed.

50. the method producing elastomer glue stock according to embodiment 49, the conveying at least one conveying extruder described of wherein said first elastomer glue stock carries out from about 20rpm to about 35rpm in delivery element speed.

51. the method producing elastomer glue stock according to any one of embodiment 38 to 50, wherein said method includes, and before being fed at least one multiaxis continuous mixing device described, cools down described first elastomer glue stock.

52. the method producing elastomer glue stock according to embodiment 51, wherein described first elastomer glue stock is cooled to the temperature from about 15 DEG C to about 40 DEG C.

53. the method producing elastomer glue stock according to embodiment 52, wherein described first elastomer glue stock is cooled to the temperature from about 20 DEG C to about 25 DEG C.

54. produce the device of elastomer glue stock, including:

-at least one contains the mixing facilities of at least one batch melting device, described mixing facilities is suitable for producing the first elastomer glue stock;

55. the device producing elastomer glue stock according to embodiment 54, at least one batch melting device wherein said is selected from banbury or mill.

56. the device producing elastomer glue stock according to embodiment 54 or 55, at least one multiaxis continuous mixing device wherein said comprises at least six rotating Vortex screw rod.

57. the device producing elastomer glue stock according to any one of embodiment 54 to 56, at least one multiaxis continuous mixing device wherein said comprises at least ten two rotary screws.

58. the device producing elastomer glue stock according to any one of embodiment 54 to 57, wherein said rotary screw has the diameter of at least 30mm.

59. the device producing elastomer glue stock according to embodiment 58, wherein said rotary screw has the diameter of at least 60mm.

60. the device producing elastomer glue stock according to any one of embodiment 54 to 59, at least one multiaxis continuous mixing device wherein said is ring extruder.

61. the device producing elastomer glue stock according to embodiment 60, wherein said ring extruder includes:

-inner core;

-define the shell of annular compartment with described inner core;

62. the device producing elastomer glue stock according to embodiment 60 or 61, wherein said ring extruder includes the air vent at least provided at described shell.

63. the device producing elastomer glue stock according to any one of embodiment 54 to 62, wherein said at least six screw rod is engagement at least partly.

64. the device producing elastomer glue stock according to any one of embodiment 54 to 63, wherein said mixing facilities includes at least one mill.

65. the device producing elastomer glue stock according to any one of embodiment 54 to 63, wherein said mixing facilities includes at least one banbury and at least one mill, and described mill is placed on the downstream of described at least one banbury.

66. the device producing elastomer glue stock according to any one of embodiment 54 to 65, between described mixing facilities and at least one multiaxis continuous mixing device described, comprise at least one conveying extruder further.

67. the device producing elastomer glue stock according to embodiment 66, at least one conveying extruder wherein said includes:

-include at least one charging aperture and the shell of a discharge gate;

-at least one is rotatably mounted to the delivery element in described shell.

68. the device producing elastomer glue stock according to any one of embodiment 54 to 67, wherein provide further batch melting device in the downstream of described multiaxis continuous mixing device, described further batch melting device is suitable for carrying out mixing further to described second elastomer glue stock.

69. the device producing elastomer glue stock according to any one of embodiment 54 to 68, the outlet of at least one multiaxis continuous mixing device wherein said is equipped with roller die head or fixing die head.

70. the device producing elastomer glue stock according to any one of embodiment 54 to 68, the outlet of at least one multiaxis continuous mixing device wherein said is uncovered head.

71. the device producing elastomer glue stock according to any one of embodiment 54 to 70, wherein said compounding devices comprises at least two multiaxis continuous mixing devices.

Accompanying drawing explanation

With reference now to accompanying drawing, by the further illustrated in greater detail present invention of illustrative embodiment, wherein:

Fig. 1 is showing the volume of production T (measuring with kg/h) that can the be obtained curve chart relative to screw diameter D (measuring with mm) by the typical viscoelasticity sizing material of the outlet at different types of multiaxis continuous mixing device;

Fig. 2 diagram shows the cross section according to ring extruder spendable in the compounding devices of one embodiment of the invention;

Fig. 3-6 shows the schematic diagram of the device producing elastomer glue stock in accordance with an exemplary embodiment of the invention.

Detailed description of the invention

As noted above, applicant have discovered that, in the compounding devices reducing complexity, by to have at least one mixing step carried out at least one batch melting device and at least one mixing step production elastomer glue stock carried out at least one continuous mixing device, it is possible to obtain high-quality elastomer glue stock.

In particular, it was found that the elastomer glue stock thus obtained shows the dispersibility significantly improved of reinforcer, and the mechanical performance improved (static and dynamically both).The elastomer glue stock obtained described in also demonstrate that has important repeatability in the result that mechanical properties obtains. Remainder in present specification reports the example of these the significant results about the elastomer glue stock then ground by batch melting device fabrication with ring extruder roller again. Using the other example that batch melting device obtains with the twin-screw extrusion different elastomer glue stock of machining can find in the previous patent application that on November 13rd, 2007 submits to same applicant, its application number is WO2007EP009798.

With reference to Fig. 1, for display when processing elastomeric material by the available volume of production T (measuring with kg/h) of typical viscoelasticity sizing material of the outlet at the different types of multiaxis continuous mixing device curve chart relative to the screw diameter used in this type of multiaxis continuous mixing device.

Especially, the curve chart of Fig. 1 shows that volume of production is relative to double screw extruder (TSE, solid line), there are 12 ring extruder (RE12 of screw rods arranged along annular, chain-dotted line), there are 24 ring extruder (RE24 of screw rods arranged along annular, dotted line), there are the relation curves of screw diameter of the ring extruder (RE36, dotted line) of 36 screw rods arranged along annular.

Described curve chart is that the applicant's part is obtained by simulating by matching experimental data and part. Especially, the trend relevant from TSE is that applicant uses different double screw extruder (namely having the multiaxis continuous mixing device of two homodromy parallel screw rods) processing to comprise the white carbon black rubber size as reinforcer, namely the typical mixture used in tire industry, a group obtained experiment volume of production data. Following general matching formula is used for TSE data described in matching and tends to, and it can be write:

T = T_{0} {(\frac{D}{D_{0}})}^{α}

Wherein D₀、T₀It is fitting parameter with α. Especially, T₀Corresponding at screw diameter D₀Under available volume of production. The rubber size of the described test obtained with TSE is about 2 and fitting experimental data by use parameter alpha. Can be even lower for this type of value of other elastomer glue stock.

On the other hand, the trend for different ring extruder is the result that applicant is simulated. Especially, at each certain screw diameter D of ring extruder RE12, RE24 and RE36₀Under available volume of production T₀It is by simulating calculating, then applying above-mentioned matching formula (α=2) and draw respective curve, show in the graph of figure 1.

As seen in FIG, the accessible volume of production of double screw extruder increases non-relative to the change of screw diameter normally low. Can obtain lower than 500kg/h when screw diameter is 133mm, it seems close to the upper limit of this type of continuous mixing device: in fact, high screw diameter value is corresponding to the high level of whole mixing device various aspects, so that the double screw extruder with higher screw diameter has under significantly high cost and needs to require that in compounding devices big space is just feasible.

The low growth that volume of production tends in the processing of elastomeric material of twin screw continuous mixing device depends primarily on and " leniently " must process described elastomeric material (namely with relatively low screw rod rotary speed, and/or with relatively low shear rate, and/or with relatively low energy etc.) the fact that, this is to be maintained in screw channel by the low temperature of mixing sizing material, to prevent the early stage incipient scorch of described sizing material.

Because it is (or bigger for about 1000kg/h that the typical batch melting device used in the compounding devices of industrial tire Workplace has minimum production, large-scale sizing material is produced), what the volume of production result (solid line) of the double screw extruder shown in FIG highlighted batch melting device and double screw extruder combines the problem of being likely to occur.In order to keep the production of the two type machine to synchronize, described batch melting device with relatively low volume of production running, or should should use the big double screw extruder of high quantity for each batch melting device. In the previous case, it is possible to obtain the unacceptable productivity of total compounding devices (unless imagination " Ecological niche (niche) " sizing material produces). In the latter case, it is possible to obtain the disadvantageous increase of total size of described compounding devices, this type of scheme non-serviceable limit for joining kneading device in location and size is reached.

Additionally, in preferred embodiments it appeared that further disadvantage, the whole compounding devices wherein comprising at least one batch melting device and at least one continuous mixing device operates continuously, namely (extruder is such as carried by use equipment, and/or with transporting equipment) directly the described sizing material that described batch melting device is discharged is transported to described continuous mixing device, this sizing material discharge from described batch melting device after then without the storage of this sizing material. Be connected to the continuous mixing device of the high quantity of each batch melting device be likely to seriously make the layout complexity of whole compounding devices to this type of in theory favourable and effective scheme be likely to actually infeasible degree. In this case, described kneading device only can carry out discontinuous running, be attended by other by be exclusively used in pile up discharge from described batch melting device and etc. the shortcoming of space loss that causes of the possible large-area generation of sizing material of stand-by described continuous mixing device fabrication, be attended by other about controlling the environmental condition in this type of region problem to prevent the quality impairment of the sizing material of described storage.

Therefore, the curve chart of Fig. 1 in fact show to produce the elastomer glue stock with high-quality and high-throughput, match with plant-scale tire production, comprise at least one batch melting device and the compounding devices of the continuous mixing device with only two axles does not represent favourable (and feasible in certain situation) scheme.

In FIG, different results can be obtained when the volume of production considering ring extruder tends to. As can be seen, by having the ring extruder that 12 diameters are about the screw rod of 50-60mm, being available for manufacturing the volume of production (referring to chain-dotted line) of the typical elastomer glue stock at least 500kg/h of tire, the machine of the suitable compact namely not needing long screw channel length can obtain. The curve chart of Fig. 1 shows that the ring extruder of the screw rod with higher amount has better result (referring to dotted line and dotted line in obtainable volume of production, relate separately to 24 and 36 screw rods), thus, there is the screw rod that diameter is about 30-40mm and can obtain the volume of production of 500kg/h. Considered as entirety by the trend that will show in Fig. 1, can reason out comprise six screw rods ring extruder (volume of production tend to be not explicitly shown in Fig. 1, but it is about near in the middle of between described double screw extruder and the solid line of the described ring extruder with 12 screw rods) possibility can obtain the volume of production of about 500kg/h by the screw rod that use diameter is about 80mm, still in the acceptable value of the cost of feasibility, compactedness and machine.

Therefore which show and use batch melting device and the compounding devices that the multiaxis continuous mixing device (using in pairs possibly for each batch melting device) with at least six rotary screw combines can be synchronize and balance the highoutput of production of the high-quality elastomer sizing material for tire, match with plant-scale tire production.

In this type of multiaxis continuous mixing device, it is preferred that embodiment represents with ring extruder, it can give advantage extra in (particularly length, under identical diameter) and exhaust capacity in machine compactedness.

According to the sectional view of display in Fig. 2, usually, ring extruder (200) including:

-inner core, or mandrel (201);

-define the shell (202) of annular compartment (203) with described inner core;

-multiple screw rods (204) being rotatably mounted to form a circle on described annular compartment (203) each axle interior.

As in figure 2 it is shown, the plurality of screw rod is homodromal and (preferably entirely) intermeshes at least in part. In operation, described screw rod (204) mixing described elastomer glue stock (205) tempestuously in described annular compartment (203), and described elastomer glue stock transfers to another at the mesh regional of high quantity from a screw channel, exchange with the heat increased with described case surface. In preferred embodiments, described ring extruder uses automatically cleaning screw rod.

Advantageously, ring extruder also typically comprises the air vent (not showing in fig. 2) being provided in described shell, to allow the releasing of volatile material. Advantageously described gas outlet can be applied vacuum to promote the extraction of volatile material further.

Can apply to the exemplary of the ring extruder of the object of the invention, ExtricomGmbH. sold. U.S. Patent number 5836682 and U.S. Patent application 2007/0121421, be hereby fully incorporated for reference herein, is the exemplary file about ring extruder.

Hereinafter, the embodiment of many compounding devices comprising at least one batch melting device and at least one multiaxis continuous mixing device will be described. For illustrate simple for the purpose of, ring extruder will act as the exemplary continuous mixing device with many axles.

With reference to Fig. 3, the compounding devices (100) for producing elastomer glue stock of the present invention includes being fed to banbury therein (101) (such as containing described elastomeric polymer (102) and described reinforcer (103)Mixing roll) mixing facilities (101a).

Preferably, it is possible to all of remaining ingredient (such as vulcanizing agent, activator, accelerator or other additive being optionally present) of described elastomer glue stock is fed in this banbury (101).

Or, mixing in described banbury (101) can a point at least two step carry out.

Carry out mixing after, by feed hopper (105), the first elastomer glue stock (104) obtained is fed in described ring extruder (106).

Described mixing extruder (106) in Fig. 3 only show a feed hopper (105). But, particularly when all components (such as vulcanizing agent, activator, accelerator or other additive being optionally present) being not described elastomer glue stock is all fed to described banbury (101), it is possible to there is more than one feed hopper (not representing in figure 3) along described ring extruder (106). And, ring extruder (106) can equip the feed pump (not representing in figure 3) of GRAVITY CONTROL, and it is advantageous for for introducing annexing ingredient such as plasticising oil in ring extruder (106).

Mixing in ring extruder (106) has produced the second elastomer glue stock. Carry out described mixing after, second elastomer glue stock (108) is discharged from mixing extruder (106), such as with the form of continuous print band or sheet, pumped by roller die head (107), such as by gear pump (not showing in figure 3), passed through chiller (109) cooling subsequently, it is preferable that to room temperature.Described roller die head (107) can also be replaced with fixing die head (not showing in figure 3).

Or, described second elastomer glue stock (108) can with carefully

The form dividing product obtains, and by being pumped by extruder die head (not representing in figure 3), described extruder die head is equipped with the foraminous die plate equipped with blade. To cool down with the fractionized described product obtained subsequently, it is preferable that to room temperature, for instance cool down (not representing in figure 3) by being transmitted to chiller.

As another replacement scheme, uncovered head (openhead) (not showing in figure 3) can be passed through described second elastomer glue stock (108) is discharged.

As further replacement scheme, described second elastomer glue stock (108) can directly obtain for half-finished form that unvulcanized tire assembles. For this purpose, it is possible to use have predetermined opening shape and the extrusion dies (not showing in figure 3) equipped with blade. Such as, with the obtainable structural detail of this type of mode can be following those: bead-core, sidewall, crown, inner liner, end liner (underliner), wearing layer. The continuous band-shaped element for the structural detail by multiple winding unvulcanized tires of formation at support member (such as manufacturing reel) can also be produced by this type of method.

Fig. 4 shows the further embodiment of the device (200) for producing the elastomer glue stock according to the present invention: employ the accompanying drawing labelling identical with disclosed counter element in figure 3.

Embodiment according to Fig. 4, is fed in further banbury (201) (such as by described second elastomer glue stock (108)Mixing roll). When all components being not described elastomer glue stock is all fed in banbury (101), the charging to described further banbury (201) is probably useful especially. In this case it is possible, for example, to described vulcanizing agent and/or activator and/or accelerator are fed to described further banbury (201).

Specific embodiment according to Fig. 4, is passed through cooling device (109) cooling, it is preferable that to room temperature before described second elastomer glue stock (108) is fed to described further banbury (201).

Or, it is possible to described second elastomer glue stock (108) is fed directly into described further banbury (201) (not representing in the diagram) and does not cool down.

Or, described second elastomer glue stock (108) can obtain with the form of subdivided product as disclosed above, and is fed to subsequently in described further banbury (201) (not representing in the diagram).

Fig. 5 shows the further embodiment of the device (300) for producing the elastomer glue stock according to the present invention: employ the accompanying drawing labelling identical with disclosed same element in figure 3.

In the specific embodiment of Fig. 5, illustrate the mixing facilities (101a) including banbury (101) and conveying extruder (301).

According to described embodiment, described first elastomer glue stock (104) is fed to conveying extruder (301) (such as single helical type screw extruder) by feed hopper (302).

Carry the charging of extruder (301) can allow to control described first elastomer glue stock (104) to the charging rate of ring extruder (106) to one.

Particular according to Fig. 5, is directly fed to described first elastomer glue stock (104) in this conveying extruder (301).

Additionally, particular according to Fig. 5, directly described first elastomer glue stock (104) is fed to this ring extruder (106) from described conveying extruder (301), by feed hopper (105), such as with the form of continuous band, such as carried out charging by gear pump (not representing in Figure 5) by pumping by roller die head (303).

In the embodiment not shown in Figure 5, first by described first elastomer glue stock (104), in the outlet from conveying extruder (301), cooled down by chiller before being fed to ring extruder (106), it is preferable that to room temperature. In order to improve the viscosity of described first elastomer glue stock before being fed into described ring extruder (106), thus described first elastomer glue stock allowing access into described ring extruder (106) is better mixing, described cooling is probably useful.

Or, described first elastomer glue stock (104), in the outlet from conveying extruder (301), after being cooled down by chiller, before being fed to ring extruder (106), it is possible to reduce with the form of subdivided product with cutter sweep (being such as equipped with the grinding machine of moving blade). Preferably, in this case, dispenser (such as volume or weightless feeder) (not showing in Figure 5) can be relied on to control to the charging of ring extruder (106).

Or, replacing described roller die head (303), described conveying extruder (301) can be equipped with:

-offer is furnished with the extruder die head of the foraminous die plate of blade, to obtain the first elastomer glue stock of subdivided product form, is then fed into described mixing extruder (106) (not showing in Figure 5); Or

-uncovered head (openhead), to allow described first elastomer glue stock to flow directly into described ring extruder (106) (not showing in Figure 5).

Or, described conveying extruder (301) can replace with mill (not showing in Figure 5).

Or, it is possible to mill is placed between described banbury (101) and described conveying extruder (301) (not showing in Figure 5).

As the replacement scheme being further not explicitly shown in Fig. 5, it is possible to use further banbury (such as by with the similar mode of display in Fig. 4 in the downstream of ring extruder (501)Mixing roll), collect described second elastomer glue stock left from ring extruder (106).

Fig. 6 shows a part for the further embodiment of the device (600) for producing the elastomer glue stock according to the present invention: same accompanying drawing labelling has the implication identical with disclosed in prior figures 3-5.

Particular according to Fig. 6, after being cooled down by chiller (109), through feed hopper (602), described second elastomer glue stock (108) is fed in extruder (601) (such as cold feed single screw extrusion machine) be used for manufacturing semi-finished product. In the embodiment not shown in figure 6, directly described second elastomer glue stock is fed to the feed hopper (602) of hot feed single screw extrusion machine, not cooled.

By pumping by extrusion dies (not showing in figure 6), will described second elastomer glue stock from the extruder (601) form with sheet or with discharge (603) in half-finished form useful Tire production (As mentioned above those).

Or, pump by roller die head (not showing in figure 6), by described second elastomer glue stock (108) form with sheet or discharge (603) with half-finished form that Tire production is useful from described extruder (601).

Generally, subsequently the sheet of described acquisition or semi-finished product (603) cooling are processed, typically by water and/or forced ventilation. Then generally described so processed or semi-finished product (603) are arranged on workbench or spool and wait further processing.

Or, can obtain, from described extruder (601), the ribbon element (not showing in figure 6) that continuous print extends, it without storing directly use in Tire production, can operate according to disclosed above like that.

Embodiment 1-2

The preparation of elastomer glue stock

Table 1 gives the exemplary preparation of the applicant elastomer glue stock formula (consumption of each component provides with phr).

Table 1

Mixing material	Phr
		NR	70
BR	30
		N326	55
Zinc oxide	5.0
		Stearic acid	2.0
Antioxidant	2.0
		Resorcinol	1.0
HMMM	2.0
		Sulfur	5.5
PVI	0.1
		DCBS	1.0

NR: natural rubber (STR20TaiteckRubber);

BR: polybutadiene (EuropreneBR40PolimeriEuropa);

N326: white carbon black;

Antioxidant: phenyl-pphenylenediamine (6-PPD-AkzoNobel);

HMMM: HMMM;

PVI (delayed-action activator): N-cyclohexylthiophthalimide (PVIFlexys);

DCBS (accelerator): benzothiazole-2-dicyclohexyl sulfenamide (DZ/EGCLanxess)。

It is made by two kinds of elastomer glue stocks the test on laboratory scale machine with above-mentioned formula.

Embodiment 1 (contrast)

?Mixing roll uses two steps are conventional mixing prepares this elastomer glue stock.

First step

The all components except sulfur, delayed-action activator (PVI), HMMM (HMMM) and accelerator (DCBS) listed in table 1 is existedIn mixing roll (model F270) mixing together, under the following conditions operation:

-charging: 225kg;

-temperature: 30 DEG C;

-mixing time: 200 seconds;

-fill factor: 73%;

-rotor speed: 40rpm;

-drop temperature: 155 DEG C.

Second step

The elastomer glue stock obtained by first step is cooled to room temperature (23 DEG C), and is fed into disclosed above same subsequentlyIn mixing roll, carry out further mixing under the following conditions:

-charging: 200kg;

-temperature: 30 DEG C;

-mixing time: 130 seconds;

-fill factor: 65%;

-rotor speed: 40rpm;

-drop temperature: 105 DEG C.

Subsequently the elastomer glue stock obtained is cooled to room temperature (23 DEG C).

Embodiment 2 (invention)

Described elastomer glue stock is to use the device according to Fig. 5 to produce.

For this purpose, directly by that obtain according to embodiment 1 and fromThis elastomer glue stock of mixing roll discharging is fed to single screw extrusion machine (not cooled), operates under following processing conditions:

-charging rate: 5500kg/h;

-screw speed: 25rpm;

-Temperature Distribution: 25 DEG C;

-when extruder discharging measure elastomer glue stock temperature: 105 DEG C.

Elastomer glue stock from conveying extruder discharging is cooled to room temperature (23 DEG C), and is fed into the ring extruder Extricom with 30mm nominal screw diameter subsequentlyIn 3XP, operate under following working condition:

-charging rate: 165kg/h;

-screw speed: 105rpm;

-torque: 90%;

-temperature distribution: 32-35-54-24-42-31-21 DEG C;

-extruder discharging measure elastomer glue stock temperature: 120 DEG C;

-in the melt pressure of die head: 24bar.

Subsequently the elastomer glue stock discharged from ring extruder is cooled to room temperature (23 DEG C).

For embodiment 1 and 2, the elastomer glue stock that test obtains is to evaluate following performance: Mooney viscosity (ML1+4), mechanical performance (static and dynamically both), and filler dispersibility: the result obtained provides in table 2.

Mooney viscosity

The Mooney viscosity (ML1+4) that non-crosslinked sizing material is at 100 DEG C is measured according to standard ISO289-1:1994.

Mechanical performance

Determine above-mentioned at 170 DEG C of modulus (100% modulus) of sample of elastomer glue stock vulcanizing 10 minutes, fracture strength and elongation at break according to standard ISO37:2005.

The IRHD hardness (at 23 DEG C) of the above-mentioned sample at 170 DEG C of sulfurations elastomer glue stock of 10 minutes is measured according to standard ISO48:1994.

Instron dynamic device traction-compact model is used to determine dynamic mechanical properties according to following method. Cylinder (length=25mm by the elastomer glue stock (vulcanizing 10 minutes at 170 DEG C) of crosslinking; Diameter=12mm) test sheet, the longitudinal deformation of compression-prestrain maximum relative to initial length 7.5% and be maintained at predetermined temperature (23 DEG C and 70 DEG C) within the whole persistent period of test, stands the dynamic sinusoidal tension force having use 10Hz frequency relative to the amplitude of length ± 3.5% under prestrain. The described dynamic mechanical properties dynamic modulus of elasticity (E') and tangent δ (fissipation factor) value represent. Described tangent delta value is as the viscous modulus (ratio calculation of E ") and elastic modelling quantity (E').

Filler dispersibility

Filler dispersibility is measured according to standard ISO11345:2006.

For this purpose, use the test sheet with following size 4mm × 4mm of cross-linked elastomer sizing material (vulcanizing 10 minutes at 170 DEG C), by using dispersion screening washer (DisperGrader) the model 1000NT (TECHPROCorp.) with 100 × amplification to evaluate filler dispersibility (X value) and filler distribution (Y value). This model has several rank that can be used for and comparing. Selecting the rank for these tests is RCB rank. This rank is typically used in the test filling the elastomer glue stock strengthening white carbon black.

Ten reference pictures are used to measure filler dispersibility (X value). Use these reference pictures to obtain an algorithm, be then applied to the sample of the unknown. Then DisperGrader analyzes unknown sample and automatically to sample distribution dispersion value (X value) of described the unknown. Higher dispersion value (X value) represents good dispersibility.

Y value is not based on and the visual comparison of picture standard, and is based on actual size and the number of big agglomerate. High assessed value means at the agglomerate that test zone does not have average diameter to be higher than 23 μm.

Table 2

(*): contrast.

In above-mentioned table 2, the data of report show that the cross-linked elastomer sizing material (embodiment 2) obtained according to the present invention has the viscosity of improvement, fracture strength and elongation at break. Remaining static and dynamic mechanical properties, with respect to the elastomer glue stock (embodiment 1) that prior art obtains, is not substantially affected by the further mixing impact that ring extruder carries out.

Additionally, in above-mentioned table 2, the data of report show that the cross-linked elastomer sizing material (embodiment 2) obtained according to the present invention has significantly improved carbon black dispersion, with respect to the cross-linked elastomer composition (embodiment 1) that prior art obtains.

Claims

1. the method manufacturing tire, including:

-at least one crosslinkable elastomer glue stock is provided;

-use the plurality of structural detail to manufacture unvulcanized tire;

-mold and cross-link to obtain finished tire to described unvulcanized tire;

-described first elastomer glue stock is fed at least one multiaxis continuous mixing device, at least one multiaxis continuous mixing device described is ring extruder, described ring extruder includes: inner core, with the shell that described inner core defines annular compartment, it is rotatably mounted to the rotary screw in described annular compartment with at least six, wherein said rotary screw has the diameter of at least 30mm, and wherein said ring extruder includes at least one air vent provided in the housing;

-by least one multiaxis continuous mixing device described in the described first mixing entrance of elastomer glue stock, to obtain the second elastomer glue stock,

The method further includes in described ring extruder during mixing described first elastomer glue stock, applies vacuum at least one air vent described.

2. method according to claim 1, at least one batch melting device wherein said is selected from banbury or mill.

3. method according to claim 1 and 2, wherein mixing at least one batch melting device described is carry out under about 20rpm to about 60rpm in rotor speed.

4. method according to claim 3, wherein mixing at least one batch melting device described is carry out under about 30rpm to about 50rpm in rotor speed.

5., according to method in any one of the preceding claims wherein, wherein mixing at least one batch melting device described is to carry out not higher than about 80% in the fill factor using mixing room.

6. method according to claim 5, wherein mixing at least one batch melting device described is to carry out from about 55% to about 70% in the fill factor using mixing room.

7., according to method in any one of the preceding claims wherein, at least one multiaxis continuous mixing device wherein said contains at least six rotating Vortex screw rod.

8., according to method in any one of the preceding claims wherein, at least one multiaxis continuous mixing device wherein said contains at least ten two rotary screws.

9. method according to claim 1, wherein said rotary screw has the diameter of at least 60mm.

10., according to method in any one of the preceding claims wherein, wherein mixing at least one multiaxis continuous mixing device described and about carries out between 600rpm at about 10rpm in screw rod velocity of rotation.

11. method according to claim 10, wherein mixing at least one multiaxis continuous mixing device described and about carries out between 400rpm at about 40rpm in screw rod velocity of rotation.

12. according to method in any one of the preceding claims wherein, wherein before described first elastomer glue stock is fed at least one multiaxis continuous mixing device described, be fed at least one conveying extruder.

13. according to method in any one of the preceding claims wherein, the offer of wherein said at least one crosslinkable elastomer glue stock includes being fed at least one further batch melting device described second elastomer glue stock.

14. according to method in any one of the preceding claims wherein, farther include the average productive capacity with at least 500kg/h and described second elastomer glue stock discharged from described multiaxis continuous mixing device.

15. manufacture the device of tire, including:

Wherein said compounding devices includes:

-at least one multiaxis continuous mixing device, described multiaxis continuous mixing device is ring extruder, described ring extruder includes: inner core, with the shell that described inner core defines annular compartment, it is rotatably mounted to the rotary screw in described annular compartment with at least six, described rotary screw has the diameter of at least 30mm, wherein said ring extruder includes at least one air vent of providing in the housing and for applying the device of vacuum to described air vent, described multiaxis continuous mixing device is suitable for receiving described first elastomer glue stock and producing the second elastomer glue stock.

16. device according to claim 15, at least one batch melting device wherein said is selected from banbury or mill.

17. according to the device described in any one of claim 15 or 16, at least one multiaxis continuous mixing device wherein said contains at least six rotating Vortex screw rod.

18. the device according to any one of claim 15-17, at least one multiaxis continuous mixing device wherein said contains at least ten two rotary screws.

19. device according to claim 15, wherein said rotary screw has the diameter of at least 60mm.

20. the device according to any one of claim 15-19, wherein said at least six screw rod is engagement at least partly.

21. the device according to any one of claim 15-20, wherein said mixing facilities includes at least one mill.

22. the device according to any one of claim 15-20, wherein said mixing facilities includes at least one banbury and at least one mill, and described mill is placed on the downstream of described at least one banbury.

23. the device according to any one of claim 15-22, further contained at least one the conveying extruder between described mixing facilities and at least one multiaxis continuous mixing device described.

24. device according to claim 23, at least one conveying extruder wherein said includes:

-include at least one charging aperture and the shell of a discharge gate;

-at least one is rotatably mounted to the delivery element in described shell.

25. the device according to any one of claim 15-24, wherein provide further batch melting device in the downstream of described multiaxis continuous mixing equipment, described further batch melting device is suitable for carrying out mixing further to described second elastomer glue stock.

26. the device according to any one of claim 15-25, the outlet of at least one multiaxis continuous mixing device wherein said is equipped with roller die head or fixing die head.

27. the device according to any one of claim 15-25, the outlet of at least one multiaxis continuous mixing device wherein said is uncovered head.

28. the device according to any one of claim 15-27, wherein said compounding devices comprises at least two multiaxis continuous mixing devices.