It is an object of an embodiment of the present invention to provide: a poly(3-hydroxybutyrate)-based resin tube which exhibits excellent resistance to repeated bending; and a method for producing the poly(3-hydroxybutyrate)-based resin tube. The object is attained by providing a poly(3-hydroxybutyrate)-based resin tube which contains 95 wt % to 60 wt % of a poly(3-hydroxybutyrate)-based resin and 5 wt % to 40 wt % of an aliphatic-aromatic polyester-based resin and has an elongation at yield point in a tensile test, a tensile elongation of not less than 50% in the tensile test, and a thickness of 0.01 mm to 0.6 mm.

A spacer for insulated glazings includes a polymeric main body including two pane contact surfaces, a glazing interior surface, an outer surface, and a cavity, wherein the polymeric main body contains a thermoplastic polymer as a base material at a proportion of 30 wt.-% to 70 wt.-%, as an elastomeric additive, a thermoplastic elastomer, and/or a thermoplastic terpolymer having an elastomeric component at a proportion of 0.5 wt.-% to 20 wt.-% in total, and a reinforcing agent at a proportion of 20 wt.-% to 45 wt.-%, the thermoplastic polymer as a base material includes a styrene-based polymer, and the polymeric main body has a foamed pore structure.

A profile part is disclosed. The profile part has an inner profile formed as an extrusion profile and has at least one reinforcing layer made from fiber-reinforced plastic which is applied to the inner profile. The inner profile is formed from at least two layers.

A flexible die head for continuously extruding pipe may have a flexible ring mandrel (112). A second, open end (120) of the ring mandrel (112) near the die exit may be continuously and resiliently formed to a non-circular shape whilst extruding the pipe so as to provide an extrudate profile to counter slump in plastic pipe forming. Symmetric and asymmetric shapes may be formed by the ring mandrel (112). The second end (120) may be flexed or otherwise distorted by use of a flexing means (122). The ring mandrel (112) may also be necked in a circumferential portion to order to further improve the forming of non-circular shapes.

A device for cutting a preferably thick-walled, extended pipe to length, has at least one cutting tool and a receiving unit for the cutting tool. The cutting tool is radially movable in relation to the extrusion axis and is rotatable via further means about the pipe to be cut to length, in order to cut the pipe to length. The receiving unit may be connected by means of a receiving disc to a sleeve via a ring element, wherein linear guiding elements are arranged on said sleeve parallel to the extrusion axis, and wherein at least four linear guiding elements are evenly distributed around the circumference of the sleeve.

Biodegradable drinking straws and methods of making biodegradable drinking straws. The drinking straws are thin and functional, having a tactile feel similar to conventional drinking straws, and are biodegradable in 12 months or less. The drinking straws use less material while maintaining high thickness uniformity, reducing cost and increasing structural integrity.

A process for forming a biofilm carrier suitable for use in a moving bed biofilm reactor (MBBR) is presented. A blowing agent is mixed with a plastic material to form a blended material. The blended material is then heated to a temperature where the blowing agent liberates gas by decomposition. The heated blended material is extruded through a die to provide the extrudate with a profile of the biofilm carrier. Advantageously, biofilm carriers produced in this manner have increased effectiveness when compared to conventional biofilm carriers.

A tube includes a layer including a fluoropolymer having a refractive index of less than 1.42, wherein the fluoropolymer includes a copolymer including vinylidene fluoride and polymethyl methacrylate, a crosslinked terpolymer including tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, or combination thereof.

A non-penetrating multi-layer continuous hose and a preparation method thereof are provided. The hose includes an outer coating, a reinforcement layer, and an inner coating. The inner coating and the outer coating can have one or more layers with different materials and have an adjustable thickness. The hose is prepared by simultaneously performing extrusion coating inside and outside the reinforcement layer rather than penetrating the fiber reinforcement layer. The hose exhibits improved layer-to-layer adhesion and has high strength, and continuous production can be achieved to meet the length requirement in various kinds of construction, which has high applicability.

Provided are a method and an apparatus for extruding into a tube and filling the tube at a high speed and simultaneously sealing the tube. Specifically provided is a method for producing a polymer tube, containing a liquid therein and being sealed at constant intervals, the method including an extrusion step of continuously melt-extruding a polymer material through a die into at least one tube, while feeding a liquid into the tube to obtain at least one liquid-containing tube; and sealing step of discontinuously pressing the at least one liquid-containing tube between a pair of pressurizing members at constant intervals to cause pressure-bonding before the tube solidifies, while continuously taking up the extruded tube.