One method for creating barrier products (for example, condoms and gloves) includes: (a) dipping a former into a tank of elastic compound. The former has an indentation extending inwardly from an outer surface for creating a first protrusion on a first face of the barrier product. The method further includes: (b) removing the former from the tank of elastic compound, whereby some of the elastic compound removably adheres to the former and fills the indentation; (c) applying supplemental material to the elastic compound, whereby creating a second protrusion on a second face of the barrier product; and (d) fully drying the supplemental material. One barrier product includes an elastic wall having opposed faces, and first and second protrusions respectively extend from the opposed faces. The first and second protrusions are in cross-sectional alignment whereby rotational input forces on the first protrusion create rotational output forces on the second protrusion.

A method and assembly for providing multi-stage extrusion of an article exhibiting an open interior. A multi-stage extrusion operation includes a first stage extrusion for receiving an initially extruded or otherwise pre-existing inner sleeve and extruding a surrounding sleeve and a plurality of radially projecting portions. A second stage subsequently extrudes an outer circular sleeve about the radially projecting portions. A third stage extrudes at least one wing portion to an outer edge of the outer circular sleeve.

The present invention relates to a process for the production of a panel for floor or wad coverings comprising the steps of mixing and homogenising raw materials, thereby obtaining a dryblend, extruding said dryblend, thereby obtaining one or more thermoplastic layers, laminating the afore-mentioned thermoplastic layers, thereby obtaining a laminate, and profiling said laminate, thereby obtaining a panel for floor or wall coverings, wherein at least one thermoplastic layer is extruded by means of a co-rotating twin-screw extruder with pressure element.

An inline method for producing a spring strip profile (1) for a slatted frame that comprises at least one core strand (2) formed by a fiber-reinforced plastic and at least one thermoplastic cover layer (3) surrounding the core strand (2), comprises at least the following steps: joining multiple fibers, threads and/or filaments to form a fiber bundle (2.1); impregnating the fiber bundle (2.1) with a thermally activatable reaction resin; molding the outer contour of the fiber bundle (2.1) impregnated with the reaction resin; thermally activating the reaction resin (2.1) to form a cured core strand; introducing the core strand (2) into an extruder head (110); applying thermoplastic melt in the extruder head (110) to form the cover layer (3) on the spring strip profile (1); and cooling and calibrating the spring strip profile (1) in a cooling and calibrating device (111, 112, 113). The outer contour of the fiber bundle (2.1) is wrapped around, in a winding machine (105), by at least one thread or filament (2.2) supplied laterally in relation to the fiber bundle in at least one position and orientation, and, in a heating section (106), before the core strand (2) is introduced into the extruder head (110), at least a partial curing of the reaction resin is achieved, at least in the wrapped outer layer of the fiber bundle (2.1).

Methods for improved colorant dispersion in polymer materials using solid-state shear pulverization, as compared to mixing techniques of the prior art, to address concerns relating to colorant agglomeration, plating-out and the like.

A metal and X-Ray detectable polyurethane film having metallic particles blended into the polyurethane when in a liquid form and then having the film extruded so as to fully embed the metallic particles, such as iron oxide, across all areas of the film, which can be used in protective clothing, such as reusable aprons and sleeve covers, for example, in food processing applications. In this manner, the film permits easy detection, and thus removal of, damaged film portions that become detached from the protective garment and inadvertently introduced into the food being processed, before the final processing and packaging thereof.

A system for fabricating an object includes an extruder for one or more deposition materials having at least one nozzle and a movable support for the nozzle. The nozzle has a nozzle axis and is rotatably attached to the movable support via a connector that is actuatable relative to the movable support to change an angular orientation of the nozzle axis, thus varying an angle between the nozzle axis and a deposition surface. The system also includes a controller that can apply a correction factor calculated for a path of the nozzle when an acute angle is formed between the nozzle axis and the deposition surface, the correction factor for moving toward the acute angle being different from that when moving away from it. The correction factor removes differences in thickness of the deposited material caused by variations in the angle formed between the nozzle axis and the deposition surface.

The extrusion of polymer compositions based on polyvinyl chloride (PVC) and in particular to a method in which polymer compositions are produced that have an elongation at break of at least 200%, a tensile strength of at least 10 N/mm2 with a specific energy input SEI of 0.03 to 0.20 kWh/kg and in particular 0.04 to 0.16 kWh/kg. The method is expediently carried out such that a plasticizer is added in a plurality of portions to the non-composed polyvinyl chloride and mixed into said polyvinyl chloride. The method thereby offers a fast and simple possibility of producing products from finished soft PVC, the production of said products requiring only a single processing device in the form of an extruder.

A direct-current cable of an embodiment includes a conductive portion; and an insulating layer covering an outer periphery of the conductive portion, the insulating layer containing cross-linked base resin and inorganic filler, the base resin containing polyethylene, a BET specific surface area of the inorganic filler being greater than or equal to 5 m.sup.2/g, and a mean volume diameter of the inorganic filler being less than or equal to 5 ?m, the mass ratio of the inorganic filler with respect to the base resin being greater than or equal to 0.001 and less than or equal to 0.05, and the cross-linked base resin being cross-linked by a cross-linking agent containing organic peroxide.

This present invention discloses a modified thermoplastic polyurethane (TPU) rolling film and relates to a preparation method thereof. The modified thermoplastic polyurethane (TPU) rolling film comprises: 100 parts by weight of TPU resin, 3 to 8 parts by weight of Thermoplastic polyolefin (TPO) resin, 5 to 10 parts by weight of Thermo Plastic Silicone Vulcanizate (TPSiV) resin, 5 to 15 parts by weight of TPU color masterbatch, 0.5 to 1.5 parts by weight of antioxidant, 0.5 to 1.5 parts by weight of light stabilizer, 10 to 15 parts by weight of flame retardant, and 0.03 to 0.1 parts by weight of compound lubricant. This kind of rolling film has a uniform thickness and high surface gloss, and is yellowing resistant, abrasion resistant, flame retardant, and low-temperature resistant.