This disclosure relates to a flexible metal laminate including a porous polyimide resin layer including 30 wt % to 95 wt % of a polyimide resin, and 5 wt % to 70 wt % of fluorine-containing resin particles, wherein micropores having a diameter of 0.05 μm to 20 μm are distributed in the porous polyimide resin layer, and a method for preparing the same.

The biaxially oriented multilayered films include a stack (A-B).sub.n of n layer units A-B, where n is greater than or equal to 32 each layer unit A-B having individual layers comprising a first layer A and a second layer B overlying the first layer A. The biaxially oriented multilayer films include intralayer voids within a portion of the individual layers in the stack. The intralayer voids have width-to-height aspect ratios from 20:1 to 500:1. The first layers of the layer units have a first composition, and the second layers of the layer units have a second composition. The first composition includes a first thermoplastic and a first polymer immiscible with the first thermoplastic. The second composition includes a second thermoplastic that may be the same as or different from that of the first thermoplastic.

Battery separators and methods are disclosed. The battery separator may be used in a lithium battery. The separator may include a microporous membrane laminated to a coated nonwoven. The coating may contain a polymer and optionally, a filler or particles. The methods may include the steps of: unwinding the microporous membrane and the nonwoven, laminating the nonwoven and microporous membrane, and coating the nonwoven before or after lamination.

The present invention relates to a multilayer film including at least one film surface which has an increased surface roughness achieved by protrusion creating particles. The at least one film surface may have a surface roughness characterized by a coefficient of roughness (CR) of ≥0.02 or a Parker Print Surf roughness of at least 2 μm.

Disclosed are compositions, methods and uses for thin multi-layered films that may include a metallizable skin layer that include polyethylene polymer(s), wherein the metallizable skin layer may be treated one or more times. The multi-layered films include a core layer and a sealant layer, wherein each of these layers includes metallocene-catalyzed, linear, low-density polyethylene. The core layer is located between the metallizable skin layer and the sealant layer. These films may include one or more additives in any of the layers and/or include one or more tie layers. The multi-layered films may be biaxially oriented, have a haze equal to or below 5%, and have an elastic modulus equal to or below 350 N/mm.sup.2. The multi-layered films may also include a metallized layer on the metallizable skin layer, a coated layer on the metallizable skin layer, and/or be laminated to a polyethylene-based polymer, such as polyethylene terephthalate.

This disclosure relates to an article that includes a nonwoven substrate and a film supported by the nonwoven substrate. The film can include a first polymer and a polymer that is immiscible with the first polymer. The first polymer can include a polyolefin and the second polymer can include a polycycloolefin, a polymethylpentene, or a copolymer thereof.

Multi-layer films and labels are disclosed herein. In an embodiment, a multi-layer film includes a core layer, a first intermediate layer disposed on a first side of the core layer, a second intermediate layer disposed on a second side of the core layer, a first skin layer disposed on the first intermediate layer and arranged such that the first intermediate layer is disposed between the core layer and the first skin layer, and a second skin layer disposed on the second intermediate layer and arranged such that the second intermediate layer is disposed between the core layer and the second skin layer, wherein the core layer includes first particles in an amount ranging from about 8 to about 20 wt %, based on the total weight of the core layer, the opacity is about 90 or greater, and the gloss ranges from about 60 to less than about 80.

Among other things, the inventive subject matter generally relates to nonwoven textiles consisting of webs of superfine fibers, i.e., fibers with diameters in nanoscale or micronscale ranges, for use in articles that have, for example a predetermined degree of waterproofness with breathability, or windproofness with breathability.

An oriented film or a shrink film comprising a polyester composition which comprises at least one polyester which comprises: a dicarboxylic acid component comprising: about 90 to about 100 mole % of terephthalic acid residues; about 0 to about 10 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and a glycol component comprising: about 10 to about 29 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and about 71 to about 90 mole % ethylene glycol residues; and optionally, diethylene glycol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %; wherein the inherent viscosity of the polyester is from 0.50 to 0.8 dL/g.

A housewrap is a multi-layer drainage wrap. A nonwoven base web has a three-dimensional pattern embossed therein on one surface of the web. This embossed web is then extrusion coated with a polymer coating. The coating is extrusion-coated on to embossed side of the nonwoven base web. The nonwoven base web has the three-dimensionally embossed and coated side as its outward facing surface. The coated base web is then activated by stretching to provide moisture vapor permeance at a rate that allows a building to breathe. The result is a housewrap that is textured on both the inside and outside faces of the housewrap. The texture and weather resistive coating on exterior side facilitates both drainage of water off of the outside face of the housewrap and the circulation of air and moisture around and through the inside face of the housewrap and promotes a tighter seal and better adhesion to flashing tapes reducing further the points of entry for water into the structure.