An extrusion device including at least one extruder having a screw cylinder, a screw shaft rotatably supported in the screw cylinder and an extruder outlet, an injection mould having an outlet nozzle determining the cross-sectional contour of the extruder, and an extrusion head arranged between the extruder outlet of the at least one extruder and the outlet nozzle of the injection mould, wherein at least one perforated plate arranged in the extruder head is provided, which has a plurality of passage openings, wherein the passage openings are designed to dam up extrusion material conveyed from the at least one extruder through the passage openings of the perforated plate differently into at least one first region of the perforated plate and at least one second region of the perforated plate, in such a way that the extrusion material is partly diverted from its preferential direction within a central section of the perforated plate, specifically increasingly into at least one edge section of the perforated plate.

A manifold plate for a manifold for supplying thermoplastic plastic melt to at least one extrusion head for producing a preform is disclosed. The manifold plate includes: a first plate side and a second plate side, a distribution groove incorporated in the first plate side and extending in a plate plane of the first plate side, and at least one connecting channel adjoining the distribution groove, which is worked into the manifold plate and ends at an outlet opening in the second plate side. The manifold plate is characterized in that the at least one connecting channel is milled into the manifold plate and, in the flow direction, has a course which is curved at least in sections towards the second plate side. A manifold, an extrusion assembly and a method for manufacturing a manifold plate are also disclosed.

A manifold plate for a manifold for supplying thermoplastic plastic melt to at least one extrusion head for producing a preform is disclosed. The manifold plate includes: a first plate side and a second plate side, a distribution groove incorporated in the first plate side and extending in a plate plane of the first plate side, and at least one connecting channel adjoining the distribution groove, which is worked into the manifold plate and ends at an outlet opening in the second plate side. The manifold plate is characterized in that the at least one connecting channel is milled into the manifold plate and, in the flow direction, has a course which is curved at least in sections towards the second plate side. A manifold, an extrusion assembly and a method for manufacturing a manifold plate are also disclosed.

An illustrative example embodiment of an elevator load bearing member includes a plurality of load bearing cords and a jacket at least partially surrounding the cords. The jacket includes an inner portion received on the cords and a fluoropolymer outer portion that establishes a fire-resistant exterior of the jacket.

Equipment of forming layering structure of plastic flooring contains: a co-extrusion unit, a first rolling mechanism, a second rolling mechanism, and a roller unit. The co-extrusion unit includes a first extruder, a second extruder, a third extruder, and a material distributor. A respective one of multiple guide tubes is defined between an opening of each of the first, second, third extruders and the material distributor, and the material distributor has multiple conduits configured to gather melted plastic materials from the first, second, third extruders, and a substrate is extrusion molded from a supply head of the material distributor. The roller unit is mounted on a support frame and includes a first delivery roller, a second delivery roller, a contact roller, two pattern rollers, a first guide roller, a second guide roller, and a third guide roller which are arranged along a horizontal direction of the support frame.

A black film containing a thermoplastic resin (A) that contains two or more types of dyes other than black, where a thickness T is 45 to 550 m, a total concentration C of the dyes other than black is 0.4 to 5 mass % with respect to the thermoplastic resin (A), the total concentration C of the dyes and the thickness T satisfy the following expression (1):
CT210(1) where in a L*a*b* color system measurement compliant with JIS Z 8781-4, L* (lightness) is no more than 10, an absolute value of a* is no more than 2.0, and an absolute value of b* is no more than 2.0, and a total light transmittance obtained after the black film is stretched twofold in one axial direction at a temperature higher than a glass transition temperature by 20 C. is no more than 3.0%.

A resin sheet having hairlike bodies arranged regularly on at least one surface of an underlayer can be manufactured by forming the bodies by: melt extruding, from a die with an extrusion molding method, a thermoplastic resin having, on a log-log graph having elongational viscosity (t) (unit: Pa.Math.S) as measured at a strain rate of 0.5 (unit: S1) and at a temperature at which elongation is possible as the vertical axis and elongation time t (unit: S) as the horizontal axis, a region in which the slope (log /log t) in the interval 0.1<t<1.0 is no greater than 0.5 and by the temperature range wherein the adhesive force in probe tack measurement is 0.05-0.25 N/mm2 at least partially overlapping with the temperature at which elongation is possible; and casting using a transfer roll on which a relief process has been performed and a touch roll.

A film having first segments and second segments arranged across the film's width direction is disclosed. The first and second segments are separated from each other by polymer interfaces. The first segments include a first polymeric composition and the second segments include a second polymeric composition. At least some of the second segments are layered second segments having first and second layers in the film's thickness direction, and one of the first or second layers includes a third polymeric composition different from the second polymeric composition. An extrusion die useful for making the film and a method for making the film using the extrusion die are also disclosed.

An improved backsheet used in the construction of solar panels is disclosed. A method of manufacturing the backsheet and solar panel comprising the backsheet, including coextrusion processes are also disclosed. Additionally, a photovoltaic solar panel module comprising the backsheet is disclosed. The backsheet may comprise an exterior layer, a middle layer, and an interior layer. The exterior layer, middle layer, and interior layer may be adjoined, adhered, or affixed via a co-extrusion process, thereby eliminating the need for the use of adhesives for bonding the layers of the backsheet together. There is also disclosed a backsheet which may comprise an exterior layer, an intermediate exterior layer, a middle layer, an intermediate interior layer, and an interior layer. The exterior layer, intermediate exterior layer, middle layer, intermediate interior layer, and interior layer may be adjoined, adhered, or affixed via a co-extrusion process, thereby eliminating the need for the use of adhesives for bonding the layers of the backsheet together. The backsheets improve upon the efficiency, strength, weather resistance, cost, and useful life of the solar panels in which the backsheets are incorporated.

A multilayer composite structure is disclosed. The multilayer composite structure has at least one polymer-based cap layer containing, for example, an acrylic, styrenic or acrylonitrile polymer and at least one polyester-based inner or substrate layer. Also disclosed are methods of forming the multilayer composite structure to improve and control the level of adhesion between the layers. Optional tie layers can be used to improve and control the level of adhesion between the layers. An optional exterior layer over the cap layer can contain polyvinylidene fluoride (PVDF) polymers. The multilayer composite structure combines the attributes of both polymersthe high UV stability, scratch resistance, and excellent appearance of the polymer-based outer cap layer and the strength and impact resistance of the polyester-based interior layer.