A multi-component extrusion die head for producing a composite tube comprises an extrusion nozzle, a main die head, and a melt flow distributor device. The main die head is configured to supply the extrusion nozzle with a first melt flow and a second melt flow, which are guided separately from one anther in the extrusion nozzle away from the main die head and toward a nozzle outlet of the extrusion nozzle. The melt flow distributor device is arranged in the extrusion nozzle outside of the main die head and is configured to split the first melt flow in a peripheral direction thereof, and to supply the second melt flow to the first melt flow such that at least one section of the second melt flow is arranged within the first melt flow in the peripheral direction.

This disclosure describes co-extruded multilayer articles including at least one continuous layer and one discontinuous layer, as well as systems and techniques for the manufacture of co-extruded multilayer articles. For example, a co-extruded multilayer article is described that includes a body having a plurality of layers, where a first layer of the plurality of layers is formed from a first material and is continuous along a longitudinal axis of the body, and a second layer of the plurality of layers is formed from a second material and is discontinuously co-extruded along the longitudinal axis.

The presently disclosed subject matter is generally directed to packaging materials having at least one antimicrobial agent and methods of making thereof. A multilayer film including a sealant layer with a polymeric substrate, a lauroyl arginate moiety, and an ethylene methacrylic acid copolymer is disclosed. Such packaging materials are suitable for use in the packaging of food products to control microbial contamination.

An assembly for performing an additive manufacturing process includes a first material feed for dispensing a first material, a second material feed for dispensing a second material, a material combiner chamber, a first entry channel fluidly connecting the first material feed and the material combiner chamber, and a second entry channel fluidly connecting the second material feed and the material combiner chamber. The assembly further includes a pen tip for dispensing a material in the additive manufacturing process, the material comprising the first material and the second material, a valve having a rod, a first seal between the material combiner and the pen tip, and a first actuator for moving the rod back and forth along a longitudinal axis to open and close the first seal.

A skin-forming die includes an inlet face; an outlet face; one or more slots, each of the one or more slots comprising one or more slot inlets extending between the one or more slot inlets and the outlet face; a plurality of feedholes extending between the inlet face and the one or more slot inlets; and a central opening configured to receive a matrix die. Extrusion die apparatus and methods of manufacturing honeycomb bodies are also disclosed.

A resin fiber formation nozzle 20 of the present invention is a nozzle configured to discharge a molten resin material into a fiber shape. The nozzle 20 includes: the internal flow path 21; an inlet 22 that allows the resin material to flow into the internal flow path 21; and an outlet 23 that allows the resin material to be discharged from the internal flow path 21 to an outside of the nozzle 20. The internal flow path 21 is shaped such that a diameter of the internal flow path 21 decreases continuously, in a section from a position A 5 mm upstream in the internal flow path 21 from the outlet 23 to a position B of the outlet 23, from the position A toward the position B.

Provided is a head for a multi-layer extrusion device which can be easily and accurately adjusted to a change in size of an extruder and a change in extrusion shape. A head 1 for a multi-layer extrusion device is provided with a plurality of flow paths for separately guiding elastomer materials G from a plurality of extruders 2 to a pre-former attachment unit. The head 1 comprises: a main head 10 to which each extruder 2 is connected; an upper head part 11 positioned above the main head 10; and a lower head part 12 positioned below the main head 10. The plurality of extruders 2 include a first extruder 5 and a second extruder 6. The main head 10 is detachably divided into at least: a first head part 15 to which the first extruder 5 is connected; a second head part 16 to which the second extruder 6 is connected; a third head part 17 connected to the first head part 15 on the downstream side of the first head part 15; and a fourth head part 18 connected to the second head part 16 on the downstream side of the second head part 16.

Disclosed is an extruder and a method for extruding cord reinforced tire components, wherein the extruder includes an extruder head with a die and a cord guide, wherein the die is provided with a cross sectional profile that defines a first cross section of the extrusion material in the die, wherein the cross sectional profile has a profile height, wherein the cord guide is arranged for guiding the cords into the die at a cord entry height, wherein the extruder head is provided with first heating elements, wherein the extruder comprises a control unit that is operationally connected to the first heating elements for generating an adjustable height temperature gradient in the extrusion material across the profile height to control swelling of the extrusion material relative to the cord entry height from the first cross section to a second cross section after the extrusion material leaves the die.

A preformer (1) is designed to extrude jointly a plurality of elastomer mixes in a direction of flow (X1), in order to form a profiled element, the preformer comprising for this purpose, superimposed in a direction of stacking (Z1), transverse to the direction of flow (X1), a first channel (11), a second channel (12) which is separated from the first channel (11) by a first partition (15), then a third channel (13), separated from the second channel (12) by a second partition (16), the preformer also comprising a stiffener (20) formed integrally with the first partition (15) and the second partition (16), and extends through the second channel (12), having a leading edge (21) which splits the flow of elastomer material following the second channel (12).

The invention relates to a preform device for positioning extruded rubber mixtures, characterized in that the preform device consists of an inlet module (2) and an outlet module (3), wherein both the inlet module (2) and the outlet module (3) each have a base surface (11, 12) and a contact face (19, 21) opposite the base surface (11, 12, 13), and wherein the surface of the contact face (19, 21) of the inlet module (2) is smaller than the surface of the base surface (11, 12) of the inlet module (2). The invention also relates to an extruder mold system for molding extruded rubber mixtures into a complete rubber element (40), having the preform device and at least one final forming device, and to a corresponding extruder system (22).