A thermoregulation system of rotating metal cylinders in plants for the extrusion and conversion/transformation of plastic films includes heating elements applied to each rotating cylinder, wherein the heating elements are infrared heating elements, and wherein the rotating cylinder includes a metal tube rotating around a fixed shaft, which is rigidly connected to two side plates.

An ultrafine fiber production device has a first heating unit, a nozzle unit, a hot air heating unit, a hot air blowing unit, a second heating unit, and a fiber collecting unit. The first heating unit melts a thermoplastic resin. The nozzle unit discharges the thermoplastic resin melted by the first heating unit. The hot air blowing unit performs fiber forming by blowing high-temperature gas produced by the hot air heating unit to the melted thermoplastic resin discharged by the nozzle unit and by extending the thermoplastic resin. The second heating unit further heats, extends, and fines produced fibers. The fiber collecting unit collects the thermoplastic resin in a fibrous form which is fined by the second heating unit.

Gas-permeable barrier films include a polyolefin and an inorganic filler dispersed in the polyolefin. Methods for forming polymeric films and articles of manufacture prepared therefrom are described.

The disclosure generally relates to a solid state non-proportional, adjustable, tapered drawing die and an oriented polymer article formed therefrom. More specifically, embodiments relate to a non-proportional draw die used to produce oriented, dimensionally accurate, symmetric or asymmetric polymer composite profiles having simple profiles or complicated profiles with multiple edges. Moreover, the draw die of the disclosure prevents natural flattening of the edges of the final profile during the solid state die drawing process of the oriented polymer composite.

A three-dimensional (3D) drawing device having a housing configured for manipulation by a user's hand and to accept a feed stock that is, in certain embodiments, a strand of thermoplastic. The drawing device has a nozzle assembly with an exit nozzle and a motor connected to a gear train that engages the strand of thermoplastic feed stock such that rotation of the motor causes the feed stock to be extruded out of the exit nozzle to form a three-dimensional object.

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Use of material transfer conduits allows the continuous production of fibers without the need to stop the process to refill the fiber producing device.

Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.

An object of the present invention is to improve spinnability, productivity, and tensile strength of a polyester fiber containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). By spinning the polyester resin containing the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) at a high spinning velocity, the spinnability, productivity, and tensile strength of the polyester fiber can be improved.

A method for manufacturing a dull polyamide 56 fiber includes steps as follows. Bright polyamide 56 chips are provided. A viscosity adjusting step is provided, wherein a relative viscosity in sulfuric acid of the bright polyamide 56 chips is adjusted to a range of 2.90 to 3.00. A moisture adjusting step is provided, wherein a moisture content of the bright polyamide 56 chips is adjusted to a range of 350 to 550 ppm. A spinning step is provided, which includes providing dull polyamide 6 chips and a blending step. The dull polyamide 6 chips include TiO.sub.2. In the blending step, the dull polyamide 6 chips and the bright polyamide 56 chips dealt with the viscosity adjusting step and the moisture adjusting step are melted and blended, and then spun at a temperature ranging from 275° C. to 285° C., thus the dull polyamide 56 fiber is obtained.

Solid-state barcodes, paints containing the solid-state barcodes, and methods of manufacturing the paint are disclosed. The solid-state barcode may include a core portion and a shell portion substantially surrounding the core portion. One or both of the core portion and the shell portion may include a pattern of two or more regions, the pattern configured to encode information. Such solid-state barcodes can be attached at arbitrary positions on objects by applying the paint containing the barcode onto the objects.