DE102022108758A1 - Single-screw extruder, processing plant and process for processing rubber material - Google Patents

Abstract

Single-screw extruder (102) for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues, with a cylinder housing (118) and a rotationally driven extruder screw (120) arranged therein, the single-screw extruder (102) having a feed zone (122) for receiving supplied rubber material, a compression zone (124) downstream of the feed zone (122) for compressing the rubber material and a homogenization zone (126) downstream of the compression zone (124) for homogenizing and / or plasticizing the rubber material, the extruder screw (120) in the feed zone (122) has a larger diameter than in the homogenization zone (126) and tapers conically in the compression zone (124) in the conveying direction of the extruder screw (120), processing system (100) for processing rubber material, comprising a single-screw extruder (102) and a separately driven feed roller (104) for feeding the rubber material to the feed zone (122) of the single-screw extruder (102), and a method (200) for processing rubber material, comprising the steps: feeding (S1) of the rubber material, in particular by means of a feed roller (104 ), to a feed zone (122) of a single-screw extruder (102); compressing (S2) the rubber material in a conical compression zone (124) of the single screw extruder (102); and homogenizing and/or plasticizing (S3) the rubber material in a homogenization zone (126) of the single-screw extruder (102).

Description

The invention relates to a single-screw extruder for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues. The invention also relates to a processing system and a method for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues.

During extrusion, especially in the production of treads for tires, rubber residues, so-called rework or scrap material, are produced, which from an economic point of view should be returned to the production process. There are basically three possible processing options. For example, the rework material can be collected and proportionately remixed in the mixing room together with fresh material in the internal mixer. Alternatively, the rubber residue can also be formed into a strip in conventional rolling mills. Depending on the quantity and dimensions, the shaping must be repeated until the resulting strip, also called mixture fur, meets the requirements. Roller machines are also known that have modified pairs of rollers for picking up and homogenizing the rework material before it is then transferred to a gear pump with a subsequent strainer. For example, the reveals DE 196 39 735 A1 an extruder for plasticizing and extruding a rubber mixture supplied in the form of at least one cold material strip, which, in the manner of a gear pump, has two meshing gears arranged in a housing, at least one inlet channel on the inlet side for the material strip and an outlet in the lateral surface of the housing, wherein the direction of rotation of the gears is such that the strip of material is conveyed between a gear and the housing to the outlet.

However, the known methods are very cost-intensive, economically disadvantageous and do not enable sufficient occupational safety. When returning via the mixing room, all rubber residues must first be transported to the mixing room. Furthermore, the internal mixer capacities in the mixing room are used to process rubber residues instead of producing new material. In addition, the economic efficiency of an internal mixer is significantly lower due to higher energy costs. This can have a direct impact on material costs. In rolling mills, the rework material must undergo two or more passes through the rolling mill for processing. The rework material must be manually fed into the rolling mill again and again until the required quality is achieved. This is very time and personnel intensive. In addition, the risk of accidents increases with each additional rolling mill. Purchase prices and the required footprint also increase noticeably. Mixing in additives also requires an additional and special technique, e.g. stock blender. The mixing quality can suffer greatly. When using a roller machine, the modified rolling mill poses an increased potential for danger. In addition, several operators are required for stationary operation, which increases costs.

The invention is based on the object of structurally and/or functionally improving a single-screw extruder mentioned above. In addition, the invention is based on the object of structurally and/or functionally improving a processing system mentioned above. Furthermore, the invention is based on the object of functionally improving a method mentioned at the outset. It is therefore an object of the present invention to provide a single-screw extruder or a processing system which reduces or eliminates the problems identified in connection with the prior art. In particular, the aim is to enable gentle and continuous homogenization of rubber residues and a simple and efficient return of the material to the production process.

The task is solved with a single-screw extruder with the features of claim 1. The task is also solved with a processing plant with the features of claim 8. Furthermore, the task is solved with a method with the features of claim 17. Advantageous embodiments and/or further developments are the subject of the subclaims, the description and/or the accompanying figures. In particular, the independent claims of one claim category can also be developed analogously to the dependent claims of another claim category.

One aspect relates to a single-screw extruder for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues. The single-screw extruder can be a conical single-screw extruder or can be designed in such a way. The rubber material can be prepared using the single-screw extruder. The rubber material can be rework or rework material. The single-screw extruder can be designed to melt and/or plasticize the rubber material fed to it. As an alternative to a single-screw extruder, a multi-screw extruder, for example a twin-screw extruder, can also be provided. Such a multi-screw extruder can essentially be designed like the single-screw extruder.

The single-screw extruder can have a cylinder housing. The single-screw extruder can have an extruder screw. The extruder screw can be or will be rotationally driven. The extruder screw can be arranged and/or mounted in the cylinder housing. The single-screw extruder may have an extruder opening, such as a feed opening or feed opening, for feeding the rubber material and/or additives. The single screw extruder may have a hopper, such as feed hopper or feed hopper, for feeding the rubber material and/or additives. The single-screw extruder may have a feed hopper device. The feed hopper device can have or define the hopper and/or the extruder opening. The single-screw extruder and/or the extruder screw can/can have a feed zone for receiving and/or feeding in rubber material supplied. The extruder opening and/or the hopper and/or the feed hopper device can/can be arranged in the feed zone. The single-screw extruder and/or the extruder screw may have a compression zone for compressing the rubber material. The compression zone can be downstream of the catchment zone. Densification may be compression of the rubber material. The compression zone can be a conical compression zone, for example tapering in the conveying direction and/or tapering or conical in the conveying direction. The single-screw extruder and/or the extruder screw can have a homogenization zone for, for example, continuous homogenization and/or plasticization of the rubber material. The homogenization zone can be downstream of the compression zone. The single-screw extruder and/or the extruder screw can/can have a discharge zone. The homogenization zone can be the discharge zone. The extruder screw can be designed to be segmented. The extruder screw can have a feed segment and/or a compression segment, in particular downstream of the feed segment, and/or a homogenization segment, in particular downstream of the compression segment. The feed segment of the extruder screw can be arranged in the feed zone. The compression segment of the extruder screw can be arranged in the compression zone. The homogenization segment of the extruder screw can be arranged in the homogenization zone. The extruder screw can have a discharge segment. The homogenization segment can be the discharge segment. The single-screw extruder can have an outlet opening, in particular arranged after the discharge zone or homogenization zone. The melted rubber material can be discharged from the interior of the single-screw extruder through the outlet opening.

The extruder screw can have a larger diameter in the feed zone than in the homogenization zone. The feed segment of the extruder screw can have a larger diameter than the homogenization segment of the extruder screw. The extruder screw can taper conically in the compression zone, especially in the conveying direction of the extruder screw. The compression segment of the extruder screw can taper conically, particularly in the conveying direction of the extruder screw. The extruder screw can be made in one piece, i.e. from one part or piece. Alternatively, the extruder screw can be designed in several parts. The extruder screw can have at least one screw flight. The extruder screw can have at least one screw web. The extruder screw can have several screw elements. The screw elements can be attached to the extruder screw or to a mandrel of the extruder screw. The screw elements can be conveying elements, mixing elements, shearing elements and/or damming elements. The extruder screw can be designed as a conveyor screw. The extruder screw can have a greater flight depth and/or flight pitch and/or flight width in the feed zone and/or in the feed segment than in the homogenization zone and/or in the homogenization segment. The extruder screw can have a constant diameter in the feed zone and/or in the feed segment. The extruder screw can have a constant diameter in the homogenization zone and/or in the homogenization segment.

The extruder screw can have one or more mixing elements and/or shearing elements and/or damming elements in the homogenization zone and/or in the homogenization segment. Several pins can be provided in the homogenization zone. The pins can be essentially cylindrical, for example circular cylindrical. The pins can be designed to be stationary and/or fixed to the housing. The pins can be firmly connected, for example screwed, to the cylinder housing of the single-screw extruder. The pins can extend, for example in the radial direction, towards the extruder screw. The pins can be arranged, for example evenly, distributed over the circumference of the extruder screw. The pins can be arranged in one or more rows of pins. The rows of pins can be arranged in several planes, for example cross-sectional planes, which follow one another in the conveying direction of the extruder screw. The levels can be at the same distance from one another in the conveying direction or in be arranged at different distances. The screw web of the extruder screw can have openings for the pins to pass through. The single-screw extruder can be designed, at least in sections, as a pin extruder.

A further aspect relates to a processing plant for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues. The processing plant can be a rubber processing plant.

The processing system includes at least one single-screw extruder. The single-screw extruder can be designed as described above and/or below.

The processing system also includes a feed roll for feeding the rubber material, in particular to the feed zone of the single-screw extruder. The feed roller can be driven separately, for example by means of a separate rotary drive, such as a motor or electric motor. The feed roller can be arranged in the feed opening of the single-screw extruder. The feed roller can be arranged in a feed hopper device. The processing system can have a control device. The speed of the feed roller can be or can be adjusted, for example by means of the control device, depending on a feed quantity and/or feed situation. The feed roller can be a feeder or part of a feeder arrangement.

The processing system can have a metering and/or feeding device for metered and/or continuous feeding of an additive. The metering and/or feeding device can be designed to feed the additive gravimetrically or volumetrically metered and/or continuously to the single-screw extruder. The dosing and/or feeding device can have a gravimetric or volumetric dosing scale. The dosing scale can be a belt scale. The dosing scale can be operated gravimetrically or volumetrically. The metering and/or feeding device and/or the metering scale can be designed to record, in particular precisely, the material flow, the volume and/or the weight of at least part of the additive. The metering and/or feeding device can be designed as a side metering device. The metering and/or feeding device can be designed to feed the additive via the extruder opening, for example feed opening, of the single-screw extruder, for example via the feed funnel device. The additive can be, for example, an additive, filler or additive.

The processing system can have a gear pump. The gear pump can be downstream of the single-screw extruder. The gear pump can be arranged at the outlet opening of the single-screw extruder. The gear pump can be designed to build up pressure for filtering the rubber melt. For example, the gear pump can be designed to build up pressures of several hundred bars.

The processing system can have a filter element. The filter element can be a strainer. The filter element can be designed as a perforated plate or sieve or sieve element. The filter element can be arranged downstream of the single-screw extruder and/or the gear pump. The filter element can be arranged at the outlet opening of the single-screw extruder. The filter element can be arranged at an outlet opening of the gear pump. The filter element can be designed to filter the rubber melt. The gear pump can be designed to press and/or convey the rubber melt through the filter element.

The processing system can have a mold. The molding tool can be a shaping tool. The molding tool can be a spray head, for example a hose spray head. The molding tool can be a slot head or tube slot head. The molding tool can be a nozzle, for example a slot die, such as a wide slot die. The molding tool can be arranged downstream of the single-screw extruder and/or the gear pump and/or the filter element. The molding tool can be arranged at the outlet opening of the single-screw extruder. The mold can be arranged at an outlet opening of the gear pump. The molding tool can be arranged at an outlet opening or outlet surface of the filter element. The molding tool can be designed to shape the rubber melt, for example into a material strip, material tube or fur, such as mixture fur and/or feeding fur. In particular, the molding tool can be designed to form a mixture sheet that can be picked up by an extruder.

The processing system can have a cooling device. The cooling device can be designed to cool the formed rubber melt. The cooling device can be arranged downstream of the mold. The cooling device can be arranged at an outlet opening of the mold.

Another aspect relates to the use of the single-screw extruder described above and/or below for the preparation of, in particular unvulcanized rubber material, such as rubber recycling material and/or rubber residues.

A further aspect relates to the use of the processing system described above and/or below for the processing of, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues.

Another aspect relates to a method for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues.

The method may include the step of: feeding the rubber material, for example by means of a feed roll, to a feed zone of a single-screw extruder. The single-screw extruder can be designed as described above and/or below.

The method may include the step of: compressing the rubber material in a conical compression zone of the single screw extruder. Air and/or gases can be discharged, for example via the extruder opening. The compression can be a densification of the rubber material.

The method may include the step of: homogenizing and/or plasticizing the rubber material in a homogenization zone of the single-screw extruder. The homogenization and/or plasticization can take place continuously.

An additive can be supplied to the rubber material, for example by means of a metering and/or feeding device. At least part of the additive can be weighed and/or dosed before feeding, in particular gravimetrically or volumetrically. The additive can be mixed with the rubber material or with the melted rubber material.

The rubber melt produced in the homogenization zone can be fed to a gear pump, in particular to build up pressure. The rubber melt produced in the homogenization zone can be pressurized, for example by means of the gear pump. The rubber melt can be fed to a filter element, in particular by means of the gear pump. The rubber melt can be pressed and/or conveyed through the filter element, in particular by means of the gear pump. The rubber melt can be filtered, in particular using the filter element. The rubber melt can be shaped, in particular by means of a molding tool, into a material strip, material tube or fur, such as mixed fur and/or feeding fur. The rubber melt can be formed after filtering. The molded rubber melt can be cooled, in particular by means of a cooling device.

In summary and in other words, the invention results in, among other things, a conical single-screw extruder for the processing of rework, such as rubber residues. The extruder concept can provide that the processing of rework material, such as rubber residues, is only carried out using a conical single-screw extruder. The single screw extruder can have a feed roll. The feed roller can be or will be driven separately. The speed of the feed roller can be adjusted depending on the feeding situation. The rework material can be fed to the extruder via a feeder. The single-screw extruder can have a comparatively large feed area that can accommodate the rework material safely and without material jamming. The single-screw extruder can have a larger screw conveyor diameter and/or deep-cut conveyor screw in sections, particularly in the feed area, which can enable the rework material to be safely picked up and/or transported away. The screw conveyor can be segmented into the areas of intake, compression and homogenization. In addition, additives can be added to the system using a side feeder, for example a gravimetric one. The dosage can be done via the extruder opening, e.g. B. funnel. With the help of a gravimetric dosing device, the additives can be added directly to the feeding hopper, where they can be captured by the rubber and dispersively mixed in the extruder. The single-screw extruder and/or the extruder screw may/can have a conical region. The material can be compressed in the conical area. Air and other gases can escape towards the funnel. The rubber mixture can be homogenized in the subsequent cylindrical part of the single-screw extruder and/or the extruder screw. To ensure rapid and gentle homogenization, pins can be used, such as those used in pin extruders. In addition, mixing, shearing and/or accumulation elements can be implemented on the screw conveyor, which can support homogenization. By changing the geometric features, a local change in homogenization can be adjusted, in particular without affecting the areas of indentation and compression. In order to relieve the pressure build-up on the extruder and/or to keep the extrusion temperature low, the single-screw extruder can be equipped with a gear pump must be connected downstream. The required pressure build-up for subsequent filtering or straining can be taken over by the gear pump and can therefore be decoupled from the extruder. The gear pump can therefore take over the pressure build-up. The extruder can only take care of the homogenization. Filtering or straining can ensure that the rubber mixture is free of impurities, foreign bodies and the like. After filtering or straining, a molding tool, such as a tube slot head, can be provided to generate a mixture sheet that can be processed by an extruder. The molding tool or the hose slot can allow the formation of feeding skins that can be picked up by a conventional extruder.

With the invention, returned materials can be processed easily and efficiently in the tire industry. Unvulcanized rubber mixtures can be processed particularly gently and continuously in order to return this material to the production process in a simple and cost-effective manner. Recycling raw material costs can be reduced. A detour via the mixing room is no longer necessary. A rolling mill or pair of rollers before or during the further process is not required. The operation can be carried out by one operator. The rework material can be continuously homogenized and formed into a lining fur. Blending of rework and fresh material, with appropriate proportioning of rework and feeding strips, can be made possible. The extruder opening is sufficiently large so that larger quantities of rubber can be absorbed at the same time. A local change in homogenization can be set without affecting the areas of indentation and compression.

• 1 eine perspektivische Ansicht einer Aufbereitungsanlage;
• 2 eine Seitenansicht der Aufbereitungsanlage gemäß 1;
• 3 eine Schnittansicht der Aufbereitungsanlage gemäß 1; und
• 4 ein Verfahren zur Aufbereitung von Kautschukmaterial.

Exemplary embodiments of the invention are described in more detail below with reference to figures, showing schematically and by way of example:

• 1 a perspective view of a processing plant;
• 2 a side view of the processing plant according to 1 ;
• 3 a sectional view of the processing plant according to 1 ; and
• 4 a process for the preparation of rubber material.

1 until 3 show various views of a processing plant 100 for the processing of, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues. The processing system 100 includes a single-screw extruder 102, a feed roll 104, a gear pump 106, a filter element 108 and a mold 110.

The feed roller 104 is arranged in a feed opening 112 of a feed funnel device 114 with a filling funnel 116. The feed roller 104 is driven separately, so that the speed of the feed roller 104 can be adjusted by means of a control device depending on a feed quantity and/or feed situation. The feed roller 104 is designed to feed the rubber material to the feed zone of the single-screw extruder 102.

The processing system 100 can have a dosing and/or feeding device (in 1 until 3 not shown) for the metered and/or continuous supply of an additive, in particular gravimetrically or volumetrically. The metering and/or feeding device can be designed to feed the additive via the feed opening 112 of the single-screw extruder 102, in particular via the feed funnel device 114.

The single-screw extruder 102 is designed to process the rubber material and has a cylinder housing 118 and a rotationally driven extruder screw 120 arranged therein. The single-screw extruder 102 further has a feed zone 122 for receiving supplied rubber material, a compression zone 124 downstream of the feed zone 122 for compressing the rubber material and a homogenization zone 126 downstream of the compression zone 124 for, in particular continuously, homogenizing and / or plasticizing the rubber material. The compression zone 124 is designed as a conical compression zone 124 that tapers in the conveying direction. The extruder screw 120 is designed as a conveyor screw and has a larger diameter in the feed zone 122 than in the homogenization zone 126 and tapers conically in the compression zone 126 in the conveying direction of the extruder screw. Furthermore, the extruder screw 120 has a greater flight depth and greater flight pitch in the feed zone 122 than in the homogenization zone 126. In the feed zone 122 and in the homogenization zone 126, the extruder screw 120 each has a constant diameter. In the homogenization zone 126, the extruder screw 120 may have one or more mixing elements and/or shearing elements and/or damming elements.

As in 3 can be seen, in the homogenization zone 126 there are additionally several pins arranged in a respective row of pins 128 130 provided, which extend towards the extruder screw 120. The rows of pins 128 are arranged in several planes, in particular cross-sectional planes, which follow one another in the conveying direction of the extruder screw 120. The screw web of the extruder screw 120 can have openings for the pins 130 to pass through.

The gear pump 106 of the processing system 100 is arranged downstream of the single-screw extruder 102 and at the outlet opening of the single-screw extruder 102. The gear pump 106 is designed so that it can build up pressure to filter the rubber melt. The filter element 108 of the processing system 100 is arranged downstream of the gear pump 106 and at the outlet opening of the gear pump 106. The filter element 108 is designed to filter the rubber melt so that the rubber melt is free of impurities, foreign bodies and the like. For example, the filter element 108 can be designed as a perforated plate or sieve element. The filter element 108 can also be referred to as a strainer.

The mold 110 of the processing system 100 is arranged downstream of the filter element 108 and at an outlet opening or outlet surface of the filter element 108. The molding tool 110 is designed to shape the rubber melt, in particular into a material strip, material tube or fur, such as mixture fur and/or feeding fur. For example, the mold 110 may be a die head, such as a tube die head, slot head or tube slot head.

4 shows schematically a method 200 for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residue.

In a step S1, the rubber material is fed, in particular by means of a feed roller 104, to a feed zone 122 of a single-screw extruder 102. In addition, an additive can be supplied to the rubber material, in particular by means of a metering and/or feeding device. The additive can be fed into the feed zone 122 of the single-screw extruder 102.

In a step S2, the rubber material is compressed in a conical compression zone 124 of the single-screw extruder 102. This also allows gases or air to escape.

In a step S3, the rubber material is homogenized and/or plasticized in a homogenization zone 126 of the single-screw extruder 102. The rubber melt produced in the homogenization zone 126 is then fed to a gear pump 106 in a step S4 to build up pressure. The rubber melt is then filtered in a step S5, in particular by means of a filter element 108. The rubber melt is pressed through the filter element 108 by means of the gear pump 106.

In a step S6, the filtered rubber melt is formed, in particular by means of a mold 110, into a material strip, material tube or fur, such as mixture fur and/or feeding fur. The formed rubber melt can then be cooled, for example by means of a cooling device.

Furthermore, additional information is given in particular 1 until 3 and the associated description.

“May” refers in particular to optional features of the invention. Accordingly, there are also further developments and/or exemplary embodiments of the invention which additionally or alternatively have the respective feature or features.

If necessary, isolated features can also be selected from the combinations of features disclosed here and used in combination with other features to delimit the subject matter of the claim, eliminating any structural and/or functional connection that may exist between the features. The order and/or number of steps in the process can be varied.

Reference symbol list

100

Processing plant

102

Single screw extruder

104

feed roller

106

Gear pump

108

Filter element

110

molding tool

112

feed opening

114

Feed hopper device

116

Filling funnel

118

Cylinder housing

120

extruder screw

122

catchment zone

124

Compression zone

126

Homogenization zone

128

row of pins

130

pencils

200

Process for preparing rubber material

S1

Step for feeding the rubber material

S2

Step to compress the rubber material

S3

Step for homogenizing and/or plasticizing the rubber material

S4

Step of feeding the rubber melt to the gear pump

S5

Step for filtering the rubber melt

S6

Step for molding the rubber melt

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19639735 A1 [0002]

Claims (21)

Single-screw extruder (102) for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues, with a cylinder housing (118) and a rotationally driven extruder screw (120) arranged therein, the single-screw extruder (102) having a feed zone (122) for receiving supplied rubber material, a compression zone (124) downstream of the feed zone (122) for compressing the rubber material and a homogenization zone (126) downstream of the compression zone (124) for homogenizing and / or plasticizing the rubber material, the extruder screw (120) in the feed zone (122) has a larger diameter than in the homogenization zone (126) and tapers conically in the compression zone (124) in the conveying direction of the extruder screw (120). Single screw extruder (102). Claim 1 , characterized in that the extruder screw (120) has a greater flight depth and/or flight pitch and/or flight width in the feed zone (122) than in the homogenization zone (126). Single-screw extruder (102) according to at least one of the preceding claims, characterized in that the extruder screw (120) is designed as a conveyor screw. Single-screw extruder (102) according to at least one of the preceding claims, characterized in that the extruder screw (120) has a constant diameter in the feed zone (122) and/or has a constant diameter in the homogenization zone (126). Single-screw extruder (102) according to at least one of the preceding claims, characterized in that the extruder screw (120) in the homogenization zone (126) has one or more mixing elements and/or shearing elements and/or damming elements. Single-screw extruder (102) according to at least one of the preceding claims, characterized in that in the homogenization zone (126) there are several pins (130) arranged in a respective row of pins (128) which extend towards the extruder screw (120). Single screw extruder (102). Claim 6 , characterized in that the rows of pins (128) are arranged in several planes, in particular cross-sectional planes, which follow one another in the conveying direction of the extruder screw (120), and/or that the screw web of the extruder screw (120) has openings for the pins (130) to pass through. Processing system (100) for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues, comprising: - a single-screw extruder (102) according to at least one of the preceding claims; and - A separately driven feed roller (104) for feeding the rubber material to the feed zone (122) of the single-screw extruder (102). Processing plant (100). Claim 8 , characterized in that the feed roller (104) is arranged in a feed opening (112), in particular in a feed funnel device (114). Processing plant (100). Claim 8 or 9 , characterized in that the speed of the feed roller (104), in particular by means of a control device, can be adjusted depending on a feed quantity and/or feed situation. Processing system (100) according to at least one of the preceding Claims 8 until 10 , characterized in that the processing system (100) has a metering and/or feeding device for metered and/or continuous feeding of an additive, in particular gravimetrically or volumetrically. Processing plant (100). Claim 11 , characterized in that the metering and/or feeding device is designed to feed the additive via the feed opening (112) of the single-screw extruder (102), in particular via the feed funnel device (114). Processing system (100) according to at least one of the preceding Claims 8 until 12 , characterized in that the processing system (100) has a gear pump (104) which is arranged downstream of the single-screw extruder (102), the gear pump (104) being designed to build up pressure for filtering the rubber melt. Processing system (100) according to at least one of the preceding Claims 8 until 13 , characterized in that the processing system (100) has a filter element (108) which is arranged downstream of the single-screw extruder (102), in particular the gear pump (106), the filter element (108) being designed to filter the rubber melt. Processing system (100) according to at least one of the preceding Claims 8 until 14 , characterized in that the processing system (100) has a mold (110), in particular a spray head, such as a hose spray head, slot head or hose-slit head, which is connected to the single-screw extruder (102), in particular the gear pump (106) or the filter element (108). , is downstream, wherein the molding tool (110) is designed for shaping the rubber melt, in particular into a material strip, material tube or fur, such as mixture fur and / or feeding fur. Use of a single-screw extruder (102) according to at least one of the preceding Claims 1 until 7 or a processing plant (100) according to at least one of the preceding Claims 8 until 15 for the processing of, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues. Method (200) for processing, in particular unvulcanized, rubber material, such as rubber recycling material and/or rubber residues, comprising the steps: - feeding (S1) of the rubber material, in particular by means of a feed roller (104), to a feed zone (122) of a single-screw extruder (102), in particular a single-screw extruder (102) according to at least one of the preceding Claims 1 until 7 ; - Compressing (S2) the rubber material in a conical compression zone (124) of the single-screw extruder (102); and - homogenizing and/or plasticizing (S3) the rubber material in a homogenization zone (126) of the single-screw extruder (102). Procedure (200) according to Claim 17 , characterized in that an additive is supplied to the rubber material, in particular by means of a metering and/or feeding device. Procedure (200) according to Claim 17 or 18 , characterized in that the rubber melt produced in the homogenization zone is fed to a gear pump (106) to build up pressure (S4). Method (200) according to at least one of the preceding Claims 17 until 19 , characterized in that the rubber melt is filtered (S5), in particular by means of a filter element (108). Method (200) according to at least one of the preceding Claims 17 until 20 , characterized in that the rubber melt is shaped (S6), in particular by means of a molding tool (110), into a material strip, material tube or fur, such as mixture fur and/or feeding fur.

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