A polymeric film, sheet, or extrusion coating is formed as a multilayered structure having at least one A layer and at least one B layer. The polymeric film, sheet, or extrusion coating is able to include at least 30% recycled content resin while also exhibiting improved stiffness and strength relative to films with purely virgin polymers. One embodiment of the present invention further presents improved oxygen barrier properties relative to existing films, sheets, or extrusion coatings. Due to the strong structural properties, the polymeric film, sheet, or extrusion coating allows for the inclusion of recycled content into applications where recycled content has previously not been able to be included, such as flexible food, pharmaceutical, or cosmetics packaging.

A polymer optical fiber is provided which shows improved hydrolytic stability. This fiber comprises a polymeric optical core and cladding layer, surrounded by a polymeric overcladding layer which comprises a miscible blend of one or more hydrolytically stable amorphous polymers. By varying the ratios of the component polymers in the overcladding blend, the glass transition temperature and the coefficient of thermal expansion of the overcladding layer may be tuned to optimize the attenuation and bandwidth of the plastic optical fiber.

Described is a coextrusion head (1) comprising a plurality of infeeds (11, 12, 13, 14, 15) for fluid products, an inner joining space (16, 17), positioned downstream of said infeeds and communicating with them by means of respective delivery ducts (110, 120, 130, 140, 150) so as to allow flows of products to converge there and an outfeed (18) for the final multi-layer product, positioned downstream of the inner joining space (16, 17). In the head (1) there is a central delivery duct (110), provided for receiving a first flow of product and two lateral delivery ducts (120, 130), designed to receive, respectively, a second flow of product and a third flow of product. The head (1) also comprises adjustable narrowing means (31, 32), acting at least in the central delivery duct (110) and designed to vary a respective opening, to allow adjustment of the relative position of the first flow relative to a composite secondary flow defined by the joining of the first, second and third flow in the joining space (16) .

One or more embodiments of the present invention provide an apparatus for applying a mixture of a first compound and a second compound, the apparatus comprising a first extruder for processing a first compound and a second extruder for processing a second compound, wherein the outlet from the first extruder is in fluid communication with a first channel of a housing, and the outlet from the second extruder is in fluid communication with a second channel of the housing, wherein a gear pump is positioned in each channel, wherein a nozzle is in fluid communication with an outlet of the first channel and an outlet of the second channel, and a coextruded continuous strip is produced. The ratio of the first compound to the second compound may be adjusted instantaneously.

One or more embodiments of the present invention provide an apparatus for applying a mixture of a first compound and a second compound, the apparatus comprising a first extruder for processing a first compound and a second extruder for processing a second compound, wherein the outlet from the first extruder is in fluid communication with a first channel of a housing, and the outlet from the second extruder is in fluid communication with a second channel of the housing, wherein a gear pump is positioned in each channel, wherein a nozzle is in fluid communication with an outlet of the first channel and an outlet of the second channel, and a coextruded continuous strip is produced. The ratio of the first compound to the second compound may be adjusted instantaneously.

An electrical connector with thin interior walls is made by extruding a polymer or polymer composite into a sheet of approximately 0.25 mm to 0.5 mm thickness. The sheet is then calendered to a thickness of about 0.05 mm to 0.3 mm. The calendered sheet is cut into notched sections. The notched sections are assembled and placed into an injection molded housing of a connector. The sections are secured in place by using an adhesive, force fit, snap fit, or welding process to form the thin interior walls of the connector.

A film includes an outer layer and a sealant layer attached to the outer layer. The sealant layer includes a first layer having a first viscosity and a second layer having a second viscosity. The first layer is attached to the outer layer and the second layer is attached to the first layer. The first viscosity is greater than the second viscosity.

Described herein are UV reflective particles, and methods of forming UV reflective particles, comprising extruding a film having a plurality of alternating layers of polycarbonate (PC) and poly(methyl methacrylate) (PMMA), wherein each layer is less than 150 nm thick, and grinding the film into particles having a median particle size less than 200 microns.

It is an object of the present invention to provide a feed block that can stably produce a resin sheet in which a main material and an auxiliary material are stacked on top of another. The feed block feeds laminated molten resin P to a die, wherein laminated molten resin P has at least one main material A that consists of a molten resin in a shape of a plate or a sheet and auxiliary material B that consists of a molten resin in a shape of a plate or a sheet, wherein auxiliary material B is stacked on at least a part of at least one main material A with regard to a width direction thereof. The feed block has: at least one main material forming channel 17, 18 that allows a molten resin to flow therethrough in order to form main material A into a shape of a plate or a sheet; auxiliary material forming channel 19 that allows a molten resin to flow therethrough in order to form auxiliary material B into a shape of a plate or a sheet; merging section 23 that forms laminated molten resin P, wherein at least one main material forming channel 17, 18 and auxiliary material forming channel 19 merge at merging section 23; and channel 24 for laminated molten resin P that is located downstream of merging section 23 and that feeds laminated molten resin P to the die.

It is an object of the present invention to provide a feed block that can stably produce a resin sheet in which a main material and an auxiliary material are stacked on top of another. The feed block feeds laminated molten resin P to a die, wherein laminated molten resin P has at least one main material A that consists of a molten resin in a shape of a plate or a sheet and auxiliary material B that consists of a molten resin in a shape of a plate or a sheet, wherein auxiliary material B is stacked on at least a part of at least one main material A with regard to a width direction thereof. The feed block has: at least one main material forming channel 17, 18 that allows a molten resin to flow therethrough in order to form main material A into a shape of a plate or a sheet; auxiliary material forming channel 19 that allows a molten resin to flow therethrough in order to form auxiliary material B into a shape of a plate or a sheet; merging section 23 that forms laminated molten resin P, wherein at least one main material forming channel 17, 18 and auxiliary material forming channel 19 merge at merging section 23; and channel 24 for laminated molten resin P that is located downstream of merging section 23 and that feeds laminated molten resin P to the die.