Abstract: The invention relates to a granulator having a cutting device which is driven by a drive device and to which a material strand can be supplied, for example by means of a conveying device. The drive device is accommodated in a granulator housing. The cutting device and optionally also the conveying device are arranged in a separate module housing, which is connected in a detachable manner to the granulator housing and can be removed from same. The cutting device and/or the conveying device are connected to the respective drive device via detachable couplings. The cutting device and optionally also the conveying device can be removed from the granulator housing as a unit together with the module housing.

Abstract: A rheometer or viscometer has a first measuring part and a second measuring part, between which a sample space for receiving a material sample is formed. By means of a drive device, at least the second measuring part can be rotated and/or can be oscillated, it being possible for the drive movement of the drive device to be transferred to the second measuring device via a transmission element. The drive device is arranged on the side of the first measuring part that is facing away from the second measuring part and the transmission element penetrates through the first measuring part, particularly at a through-bore.

Abstract: The invention relates to an extruder which has an extruder housing. The housing has at least two housing parts and is provided with a delivery channel in order to extrude a medium, at least one screw conveyor being located in said channel. The extruder housing is releasably retained on a frame by means of a first retaining device and a shaft section of the screw conveyor is releasably connected to a drive device. According to the invention the housing parts are fixed relative to one another by means of a second retaining device and the extruder housing is connected to the frame and secured against displacement in the longitudinal direction of the extruder housing by means of a third retaining device. When the first and third retaining device) are released, the housing parts can be removed as a unit from the frame.

Abstract: The invention relates to an extruder which has an extruder housing, in which a delivery channel for a medium to be extruded is formed. At least one screw conveyor is located in the delivery channel and a cooling device is provided for the extruder housing, said device having at least one cooling line in or on the extruder housing, through which line a cooling fluid flows. An electronic device for controlling and/or regulating the operating states of the extruder is accommodated in an electronics housing which can be cooled according to the invention by means of the cooling device for the extruder housing.

Abstract: The invention relates to a granulator having a cutting device which is driven by a drive device and to which a material strand can be supplied, for example by means of a conveying device. The drive device is accommodated in a granulator housing. The cutting device and optionally also the conveying device are arranged in a separate module housing, which is connected in a detachable manner to the granulator housing and can be removed from same. The cutting device and/or the conveying device are connected to the respective drive device via detachable couplings. The cutting device and optionally also the conveying device can be removed from the granulator housing as a unit together with the module housing.

Abstract: A rheometer has a measuring chamber which is delimited by a measuring chamber wall in which at least one measuring component is disposed for acceptance of a sample. The measuring chamber can have a gas flowing through it whose temperature is controlled in a desired fashion by a first temperature control device. A second temperature control device is also disposed in the measuring chamber wall by means of which the wall of the measuring chamber can be temperature controlled to a desired temperature. To temperature control the sample, the gas flow in the measuring chamber can be switched off or at least highly reduced prior to measurement of the reological characteristic quantities and further temperature control of the measuring chamber is effected by means of the temperature control of the measuring chamber wall.

Abstract: A rheometer has a measuring shaft which is borne for rotation about and/or axial displacement along its longitudinal axis and has a detection device for determination of the normal force and/or the torque which acts on the measuring shaft during a measurement. The detection device thereby has a first holding member which is connected to the measuring shaft and a second holding member which is mounted to a stationary frame, wherein the second holding member is connected to the first holding member by means of resilient connecting members and at least one strain gage is introduced onto at least one of the connecting members to measure the deformation of the connecting member.

Abstract: A test body clamping device in a rheometer comprises two clamping jaws between which a test body can be clamped, and an operating device for moving the clamping jaws towards and away from each other. The invention provides that each clamping jaw is pivotably disposed about an axis, wherein the axes extend parallel to each other and parallel to a clamping surface of the respective clamping jaw. The clamping jaws moreover have an associated common drive part for exerting a drive force onto both clamping jaws, which produces a synchronized pivoting motion of both clamping jaws, wherein the clamping jaws are subjected, in their clamped position, to the action of a common clamping force element, in particular a clamping spring.

Abstract: A rheometer has a measuring chamber which is delimited by a measuring chamber wall in which at least one measuring component is disposed for acceptance of a sample. The measuring chamber can have a gas flowing through it whose temperature is controlled in a desired fashion by a first temperature control device. A second temperature control device is also disposed in the measuring chamber wall by means of which the wall of the measuring chamber can be temperature controlled to a desired temperature. To temperature control the sample, the gas flow in the measuring chamber can be switched off or at least highly reduced prior to measurement of the reological characteristic quantities and further temperature control of the measuring chamber is effected by means of the temperature control of the measuring chamber wall.

Abstract: A rheometer has a measuring shaft which is borne for rotation about and/or axial displacement along its longitudinal axis and has a detection device for determination of the normal force and/or the torque which acts on the measuring shaft during a measurement. The detection device thereby has a first holding member which is connected to the measuring shaft and a second holding member which is mounted to a stationary frame, wherein the second holding member is connected to the first holding member by means of resilient connecting members and at least one strain gage is introduced onto at least one of the connecting members to measure the deformation of the connecting member.

Abstract: A rheometer has an upper measuring part and a lower measuring part, between which a measuring chamber is formed for receiving a sample of a substance to be examined, wherein the two measuring parts can be moved relative to each other and, in particular, can be rotated or pivoted. Moreover, a heating device is provided for heating at least the lower measuring part and therefore the sample. The lower measuring part comprises a support part carrying the sample which can be heated through application of an electrical voltage. The support part is preferably made from glass which is itself electrically conducting and/or which can be provided with an electrically conducting medium.

Abstract: A rheometer, in particular, a rotational or extensional rheometer, comprises a lower measuring part and an upper measuring part, between which a sample space is formed for receiving a material sample, and which can be moved relative to each other. The sample space is surrounded at a distance by a cover which forms an inner closed measuring chamber, wherein a temperature sensor for detecting the temperature within the measuring chamber and a temperature control device for the measuring chamber are provided. A further sensor device serves to detect the air moisture and/or the pressure within the measuring chamber, wherein a gas and/or liquid can be supplied to the measuring chamber and can be discharged therefrom via a discharge line.

Abstract: A rheometer has a rotor comprising a shaft which is seated with play in a recess of a bearing block and is supported contact-free in a radial and/or axial direction by an external air cushion which acts in a bearing section. To provide for simple and inexpensive production of an air bearing having a high loading capacity, the wall of the recess in the bearing section is continuous without bore-holes, and consists of air-permeable material. The bearing air loads the side of the wall facing away from the shaft and penetrates through the wall.

Abstract: A rheometer has an upper measuring part and a lower measuring part, between which a measuring chamber is formed for receiving a sample of a substance to be examined, wherein the two measuring parts can be moved relative to each other and, in particular, can be rotated or pivoted. Moreover, a heating device is provided for heating at least the lower measuring part and therefore the sample. The lower measuring part comprises a support part carrying the sample which can be heated through application of an electrical voltage. The support part is preferably made from glass which is itself electrically conducting and/or which can be provided with an electrically conducting medium.

Abstract: A rheometer has an upper measuring part and a lower measuring part, between which a measuring chamber is formed for receiving a sample of a substance to be examined. The two measuring parts can be moved relative to each other and, in particular, be turned or pivoted, wherein the upper measuring part and/or the lower measuring part consist at least partially of ceramic material.

Abstract: A rheometer has a rotor comprising a shaft which is seated with play in a recess of a bearing block and is supported contact-free in a radial and/or axial direction by an external air cushion which acts in a bearing section. To provide for simple and inexpensive production of an air bearing having a high loading capacity, the wall of the recess in the bearing section is continuous without bore-holes, and consists of air-permeable material. The bearing air loads the side of the wall facing away from the shaft and penetrates through the wall.

Abstract: A rotational rheometer has a cylindrical outer housing into which a measuring container can be inserted substantially coaxially thereby forming a radial annular space. The measuring container has a measuring chamber for receiving a sample material. A fluid may flow through the annular space to bring the outside of the measuring container and thereby the sample material to a desired temperature. The fluid is a gas and a circulating device is provided within the outer housing for circulating the gas.