A composite material having a molten polymer barrier effect with flame-retardant properties includes a first layer of non-woven fabric having 40% or more by weight of oxidized polyacrylonitrile fibers to confer flame-retardant properties. The first layer has a basis weight of 200-600 g/m2 and a thickness of 1.6-5 mm. A barrier layer overlaps the first layer and counteracts passage of molten polymer. The first layers oxidized polyacrylonitrile fibers have a count of 1.5-5 dtex and the other first layer synthetic fibers have a count of 0.8-5 dtex. The barrier layer includes a second layer of non-woven fabric of hydro-entangled synthetic and/or artificial fibers. The barrier layer has a basis weight of 70-150 g/m2; a thickness of 0.4-1.5 mm; and a permeability of 200 L/m2s-2000 L/m2s under a pressure drop of 2 mbar. The composite material has a thickness of 2-6.5 mm, and a basis weight of 270-750 g/m2.

Example embodiments relates to a film having excellent mechanical properties with excellent optical properties such as refractive index, haze, yellow index, and the like, light transmitting laminate, use as a cover film, a multi-layered electronic device, and the like comprising the same.

The film comprises an elastic layer, the elastic layer has a refractive index of 1.48 to 1.58, a low temperature damage index is a difference of a tensile modulus and a tensile strength at a certain temperature, and the elastic layer has a low temperature index of 1,300 MPa or less.

A thermoplastic composite article comprising a porous core layer and an open cell skin disposed on a first surface of the core layer is described. The composite article comprises a noise reduction coefficient of at least 0.5 as tested by ASTM C423-17 and a flame spread index of less than 25 and a smoke development index of less than 150 as tested by ASTM E84 dated 2009.

A printed sheet fiber entanglement apparatus entangles fibers from neighboring printed fibrous layers (e.g., sheets) with one another. As a stack of printed fibrous sheets is built up, periodically a holey plate is loaded against the top sheet of the stack. The guide plate may move the sheet down over the registration pins, and then an array of felting needles are thrust into the stack. An array of needles with upward and/or downward facing barbs is thrust thought holes in the guide plate into the stack through printed sheets closest to the guide plate. As the needles pushed into or are withdrawn from the stack, barbs on the felting needles intertwine fibers from the fibrous sheets through printed marking material and with neighboring sheets. The needle array may translate slightly between multiple thrusts so that a subsequent needling thrust may occur in a slightly new location.

The embodiments relate to a polyamide-based film that is excellent in optical properties and mechanical properties, to a process for preparing the same, and to a cover window and a display device comprising the same. It comprises a polyamide-based polymer and a filler in an amount of 600 ppm or more relative to the weight of the polyamide-based polymer, wherein when the 3D surface roughness thereof is measured, the number of summits per unit area (Sds) is 4,400/mm.sup.2 or less.

The present invention relates to a dehumidification bag and a preparation method thereof. The dehumidification bag comprises a bag body including a first side sheet and a second side sheet, the side sheet comprises an air-permeability and/or a composite film, wherein at least all or part of at least one side sheet is an air-permeability film; a moisture-proof layer covers the outside of the air-permeability. The dehumidification bag provided by the present invention provides an air-permeability on the bag body, and adopts heat sealing between the outer surface of the air-permeability layer and the moisture-proof layer, so that the air-permeability and the moisture-proof layer are in close contact without moisture absorption, which effectively prevents damage during transportation and storage. In the process, the air-permeability is in contact with the air in the outer bag and the effect of the dehumidifier becomes poor or invalid; by setting the moisture-proof layer to be tearable, when the buyer uses the dehumidification bag, the moisture-proof layer can be torn off, which is convenient and fast.

The present invention relates to oriented, multilayer polyethylene films. In one aspect, a biaxially oriented, multilayer polyethylene film comprises at least one layer comprising: (1) a polyethylene-based composition that comprises: (a) at least 97% by weight, based on the total weight of the polyethylene-based composition, of a polyethylene composition comprising: (i) from 25 to 37 percent by weight of a first polyethylene fraction having a density in the range of 0.935 to 0.947 g/cm.sup.3 and a melt index (I.sub.2) of less than 0.1 g/10 minutes; and (ii) from 63 to 75 percent by weight of a second polyethylene fraction; wherein the polyethylene composition has less than 0.10 branches per 1,000 carbon atoms when measured using .sup.13C NMR, wherein the density of the polyethylene-based composition is at least 0.965 g/cm.sup.3, and wherein the melt index (I.sub.2) of the polyethylene-based composition is 0.5 to 10 g/10 minutes.

Layered nonwoven textile containing a first layer (T) of filaments, which contains endless filaments containing a first carrier polymer (A1) and a first binding polymer (B1), which forms at least a part of surface of said endless filaments and which has a melting temperature at least 5° C. lower than the first carrier polymer (A1), wherein the first layer (T) of filaments contains bonding points in a spaced arrangement, wherein the bonding points interconnect the filaments and are formed by the first binding polymer (B1), a second layer (M) of filaments, which contains filaments containing a carrier material, the stiffness of which is lower than the stiffness of the first carrier polymer (A1), and a second binding polymer (B2), which has a melting temperature at least 5° C., preferably at least 10° C., lower than the carrier material and the first carrier polymer (A1), wherein the second layer (M) of filaments contains bonding points in a spaced arrangement, wherein the bonding points interconnect the filaments of the second layer (M) and are formed by the second binding polymer (B1).

Described herein are physically crosslinked, closed cell continuous multilayer foam structures that includes a foam layer comprising polypropylene, polyethylene, or a combination of polypropylene and polyethylene and a polyamide cap layer. The multilayer foam structure can be obtained by coextruding a multilayer structure comprising at least one foam composition layer and at least one cap composition layer, irradiating the coextruded structure with ionizing radiation, and continuously foaming the irradiated structure.

Articles and insulating systems include a wicking layer, an incompressible insulation layer, and a water scavenging system comprising a superhydrophobic layer in operative communication with one or more water collecting components.