A multi-shaft preparation unit for plastic melts, having an extruder housing with an enclosed treatment chamber in its interior, and at least one rotor body shaft mounted rotatably in the treatment chamber and a sealing and guiding body with multiple recesses, in each of which a satellite screw is mounted. The multi-shaft preparation unit has a drive unit in which a gearing unit is arranged outside the extruder housing between a drive motor and the treatment chamber and is connected to the drive shaft sections of the rotor body shaft and of the satellite screws which lead out of the treatment chamber of the extruder housing. A separating device for decoupling a flow of fluid and/or heat emanating from the treatment chamber is provided between the extruder housing and the gearing unit, through which the drive shaft ends of the rotor body shaft and of the satellite screws pass.

A sizer for cooling an extrudate, which includes a clad core and a housing. The clad core includes an extrusion channel which accommodates the extrudate, and a core vacuum port in fluid communication with the extrusion channel. The housing includes a cooling channel and a housing vacuum channel. The cooling channel does not exist in the clad core and is adapted to circulate a coolant through the housing.

An extruder system and a method for extruding cord reinforced extrudate, in particular for tire components, are provided. The extruder system includes an extruder head with flow channels for receiving an extrusion material from an extruder, a die for receiving the extrusion material from the flow channels, and a cord guide for guiding cords side-by-side in a cord plane into the die. The extruder head is provided with an insertion slot that extends in an insertion direction parallel to the cord plane through the extruder head. The flow channels debouch into the insertion slot at a flow area. The insertion slot is arranged for receiving the die and the cord guide in the insertion direction into a die position downstream of the flow area and a cord guide position upstream of the flow area, respectively, with respect to the insertion direction.

A sealing device for sealing the intermediate space between a housing and a shaft rotatably mounted in the housing, having a first plate-shaped body with a front face, a rear face, and a first opening, which extends from the front face to the rear face and is suitable for feeding through the shaft, and having a cooling line, which runs in the body and is suitable for conducting a cooling medium. The first body is suitable for being tightly secured to the housing such that the shaft rotatably mounted in the housing is guided through the first opening. The first opening is suitable for introducing sealant such that the sealant seals an intermediate space between the shaft and the first body. The cooling line is guided around the first opening between a cooling line inlet and a cooling line outlet for the cooling medium such that heat produced from rotating the shaft can be dissipated by the cooling medium in a spatially homogenous manner.

The invention relates to an extruder system and a method for extruding cord reinforced extrudate, in particular for tire components, wherein the extruder system comprises an extruder head with flow channels for receiving an extrusion material from an extruder, a die for receiving said extrusion material from the flow channels and a cord guide for guiding cords side-by-side in a cord plane into the die, wherein the extruder head is provided with an insertion slot that extends in an insertion direction parallel to the cord plane through the extruder head, wherein the flow channels debouch into the insertion slot at a flow area, wherein the insertion slot is arranged for receiving the die and the cord guide in the insertion direction into a die position downstream of the flow area and a cord guide position upstream of the flow area, respectively, with respect to the insertion direction.

A sizer for cooling an extrudate, which includes a core and a housing. The core includes an extrusion channel which accommodates the extrudate, a core cooling channel, and a core vacuum channel in fluid communication with the extrusion channel. The housing includes a housing cooling channel and a housing vacuum channel. The core cooling channel is in fluid communication with the housing cooling channel, and the core vacuum channel is in fluid communication with the housing vacuum channel.

An article comprising: a carrier (12), activatable material (14) disposed on the carrier, one or more carrier extensions (16) extending from the carrier; wherein the article is adapted to provide sealing, baffling, or reinforcement within a structure's cavity.

An ultrasonic device comprising a chamber (10) provided with an inlet bore (11), which receives a melted pressurized polymer, an outlet bore (12) and a sonotrode housing bore (13) through which a distal portion (21) of an ultrasonic head (20) is inserted into the chamber, wherein the distal portion is separated from the rest of the ultrasonic head by a first nodal plane (PN1) wherein there is a first surface (S1) in contact with a complementary surface of a ring seal (30) that closes the chamber, and wherein the ultrasonic head includes a second nodal plane (PN2) away from and parallel to the first nodal plane (PN1) coinciding with or adjacent to a second surface (S2) wherein an anchoring device (40) presses the ultrasonic head against the ring seal ensuring a tight closure.

An article comprising: a carrier (12), activatable material (14) disposed on the carrier, one or more carrier extensions (16) extending from the carrier; wherein the article is adapted to provide sealing, baffling, or reinforcement within a structure's cavity.

An extruder has a valve assembly configured to move pins to open and close the nozzles in a multi-nozzle extruder head independently. The pins of the valve assembly that are driven by actuators into and out of engagement with nozzles in the extruder head are positioned within sleeves that extend between the valve assembly and the extruder head. A gap is provided between the extruder head and the end of the sleeves proximate the extruder head to enable thermoplastic material leaking from the extruder that contacts the pins to remain in a melted or plastic state so the thermoplastic material does not interfere with the movement of the pins.