A slit nozzle includes: a first head, a second head facing the first head; and a plurality of cores located between the first head and the second head, wherein the plurality of cores includes: a first core and a third core for coating a coating solution; and a second core located between the first core and the third core so that coating of the coating solution via the first core and the third core is achieved at different instants of time.

A method for manufacturing a fragrance capsule of tobacco according to an embodiment of this disclosure may comprise: a membrane manufacturing step for manufacturing a membrane of a fragrance capsule by a membrane manufacturing part which manufactures a membrane; a capsule manufacturing step for manufacturing the fragrance capsule using an apparatus for manufacturing a capsule with the membrane manufactured during the membrane manufacturing step and a fragrance liquid to be held in the membrane; and a hardening step for hardening the fragrance capsule.

A multilayered motor vehicle pipeline, wherein the pipeline has at least two layers, preferably at least three layers of plastic. At least one surface of at least one layer connected to another layer is configured profiled, wherein the profiling has maxima and minima. The height difference h between the maxima and the minima directly adjacent to the maxima is between 1 and 100 m.

The present disclosure generally relates to extrusion die systems. In particular, the present disclosure relates to the cyclical extrusion of materials to generate small sized grain features, generally in the range of nanosized grain features, in a tubular or profile shape, in which the individual nanolayers possess pores and/or polymer crystals oriented parallel to the extrusion flow direction and including products with enhanced permeation properties.

An extrusion device for manufacturing a hollow structure by coaxial extrusion of a plurality of media. The extrusion device has a plurality of mountings, each for a nozzle for extruding one of the media. The mountings extend in an axial direction along a central axis and are arranged coaxially, for coaxial arrangement of the nozzles in one another. At least two of the mountings follow one another in a radial direction and are mounted against one another in the radial direction by use of a bearing such that the at least two mountings can be displaced relative to one another in the axial direction in order to adjust the relative axial positions of the respective nozzles.

A diffuser membrane and a method for manufacturing the same are provided. In the method for manufacturing, a first material is heated and extruded to form a base layer and a second material is heated and extruded to form a coating layer. The base layer and coating layer may be extruded substantially simultaneously in a coextrusion process. Accordingly, the coating may be applied to the base layer in a manner that optimizes the bonding between the two layers and provides the ability to control the thickness of the coating layer. Alternatively, the base layer is formed initially and the coating layer is subsequently formed thereover. The first and second materials have differing properties. The first material may comprise polyurethane and the second material may comprise polyurethane and PTFE.

The invention relates to a die device (10) for an extrusion blow-molding apparatus (100) for producing a multilayered blown film (300), with an inner surface (310) and an outer surface (320), having a die orifice for the discharge of a multilayered material melt (300), wherein a temperature-control device (30) is arranged in order to set a different temperature on the two sides (310, 320) of the material melt (300). The invention also relates to a method for equalizing the differences in viscosity of the materials of the layers (350) by a controlled (40, 60) temperature setting.

A method of producing a microtube is provided. The method comprising co-electrospinning two polymeric solutions through co-axial capillaries to thereby produce the microtube, wherein a first polymeric solution of the two polymeric solutions is for forming a shell of the microtube and a second polymeric solution of the two polymeric solutions is for forming a coat over an internal surface of the shell, the first polymeric solution is selected solidifying faster than the second polymeric solution and a solvent of the second polymeric solution is selected incapable of dissolving the first polymeric solution. Also provided are electrospun microtubes

A coextrusion die for manufacturing multilayer, coextruded, tubular preforms made from thermoplastic plastic. A storage cylinder element has an inner storage space. A spindle, and an annular storage space is formed between the spindle and the storage cylinder element, which opens into an output ring channel. An extrusion head, which is axially displaceable with respect to the storage cylinder element includes a ring piston, in which at least two heart distributor elements are coaxially arranged. A flow channel is formed in each case between the ring piston and the adjacent heart distributor element as well as between each of two heart distributor elements, which widens from an inlet opening to a distributor ring channel from where it transitions into a cylindrical ring channel as a frustoconical ring channel.

A web. The web includes an array of discrete polymeric tubes; a plurality of spacer segments between at least a plurality of adjacent polymeric tubes; wherein polymeric tubes are hollow polymeric tubes; wherein the web is a continuous web.