A method of preparing antimicrobial-containing polymeric products is provided, the method involving electrospinning a dispersion comprising a dispersible polymer, a fiberizing polymer, and one or more antimicrobial agents. The electrospun material is heated to remove solvent and the fiberizing polymer, giving a nonwoven polymeric material having antimicrobial agent incorporated therein. The material can be in the form of, for example, a non-woven sheet, tube, or covering.

A method for pinning the edges of an extruded polymeric mass and an edge-pinning group are described.

The invention relates to a method for automatically regulating the size of a nozzle discharge slot of a nozzle assembly, wherein the nozzle assembly comprises a first and a second nozzle lip and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt. A plurality of adjusting elements, in particular a plurality of adjusting pins, which are coupled to a respective thermoelement, is arranged at the first nozzle lip, wherein the thermoelements are controllable by the regulation in such a way that the slot adjustment can be realized by the action of a mechanical force from the respective adjusting element on the first nozzle lip as a result of an expansion or contraction of the thermoelements. At least one clamping blade is respectively arranged in a right-hand and left-hand edge region of the nozzle assembly, wherein the width of the nozzle discharge slot can be variably set. The method comprises the following steps, which are carried out automatically for adjusting the width of the nozzle discharge slot and for clamping the adjusting elements: unclamping the clamping blade within the nozzle discharge slot; displacing the clamping blade within the nozzle discharge slot; clamping the clamping blade within the nozzle discharge slot for fixing individual adjusting elements.
Furthermore, the invention relates to a control and/or regulation system.

A device and method for cooling foil material are provided, comprising: a movable belt, wherein the belt is intended for receiving the foil material at a first predetermined position of the device, for transporting the foil material received, and for discharging the foil material at a second predetermined position, wherein the device is adapted to cool the foil material received and/or the belt.

A sweeper roller is provided for forming a film, the sweeper roller having helical grooves provided to the surface, wherein the ratio of the surface area of the helical groove portion is 30% or less of the surface area of the sweeper roller, and the width of the helical grooves in the axial direction of the sweeper roller is 25 mm or greater. Provided thereby are: a sweeper roller that does not generate air banks and sweeper marks during high-speed casting and when forming a thick film; a plastic film manufacturing device that uses the sweeper roller; and a manufacturing method.

This sheet manufacturing apparatus is provided with: a nozzle for extruding a heated resin sheet; a main roll with a surface on which microstructures are formed; a follower roll disposed at a distance from the main roll; and an electricity-supplying mechanism. The electricity-supplying mechanism heats an electrically conductive section of the main roll by supplying electricity to the electrically conductive section from both edges of the main roll.

Polymeric layers (50) comprising an array of blind openings (56) extending into the first major surface (52, 10111, 11211), but not through the second major surfaces (54, 10112, 11212). The blind openings each have a series of areas through the openings from the first major surface towards the second major surfaces ranging from minimum to maximum areas, where for at least a majority of the blind openings the minimum area is not at the first major surface. At least a portion of the first major surface comprises a first material and extends up to, but not into the second major surface. At least a portion of the second major surface comprises a second, different material. Methods for making the polymeric layers are also disclosed. Polymeric layers are useful, for example, as components in personal care garments such as diapers and feminine hygiene products. They can also be useful for filtering (including liquid filtering) and acoustic applications.

An optical film includes a hydrogenated block copolymer-[2] obtained by hydrogenating 90% or more of unsaturated bonds of block copolymer-[1] that includes at least two polymer blocks-[A] and at least one polymer block-[B], the polymer block-[A] including a repeating unit derived from an aromatic vinyl compound as main component, the polymer block-[B] including repeating unit derived from a linear conjugated diene compound as main component, ratio (wA:wB) of weight fraction wA of the polymer block-[A] in block copolymer-[1] to weight fraction wB of polymer block-[B] in block copolymer-[1] being 40:60 to 80:20, height from peak of ridge of a die line is formed in longitudinal direction of the optical film to a valley bottom point that is contiguous to the ridge being 100 nm or less over the optical film entire surface, and slope of the die line being 300 nm/mm or less over the optical film entire surface.

A backsheet for a photovoltaic module includes a support and a primer provided on a side of the support facing a sealing layer, the primer including an acrylic resin and a crosslinking agent, characterized in that the acrylic resin is a copolymer including at least 5 wt % of an acrylate monomer unit containing a UV absorbing group and at least 2 wt % of an acrylate monomer unit containing a crosslinkable group both relative to the total weight of monomer units.

A method of preparing antimicrobial-containing polymeric products is provided, the method involving electrospinning a dispersion comprising a dispersible polymer, a fiberizing polymer, and one or more antimicrobial agents. The electrospun material is heated to remove solvent and the fiberizing polymer, giving a nonwoven polymeric material having antimicrobial agent incorporated therein. The material can be in the form of, for example, a non-woven sheet, tube, or covering.