Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 μm but not more than 5 μm and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 μm.

The plurality of pieces of low density cellular material, such as foam plastics, form a core panel having opposite side surfaces and with adjacent pieces having opposing edge surfaces extending between the side surfaces. Sheets of flexible material, such as veils or mats or scrim, are adhesively attached to the side surfaces, and portions of one sheet extend between the opposing adjacent edge surfaces for limiting flexing of the panel. The pieces may be tapered, and portions of the one sheet may project between the edge surfaces either partially or fully to form double wall webs. The webs may have flanges adhesively attached to the other sheet on the opposite side. One sheet may also be stretchable in areas not adhesively attached to the pieces to provide for curving the panel from a planar position maintained by the sheet on the opposite side.

There is provided an optical laminate with pressure-sensitive adhesive layers on both surfaces. The optical laminate comprises: a first substrate; a first low-refractive index layer formed on the first substrate; a first pressure-sensitive adhesive layer arranged so as to be adjacent to the first low-refractive index layer; a second low-refractive index layer arranged so as to be adjacent to the first pressure-sensitive adhesive layer; a second substrate having formed thereon the second low-refractive index layer; and a second pressure-sensitive adhesive layer and a third pressure-sensitive adhesive layer serving as outermost layers. The first low-refractive index layer and/or the second low-refractive index layer has a porosity of 50% or more, the first pressure-sensitive adhesive layer has a storage modulus of elasticity of from 1.3×10.sup.5 (Pa) to 1.0×10.sup.7 (Pa), and the second pressure-sensitive adhesive layer and/or the third pressure-sensitive adhesive layer has a storage modulus of elasticity of 1.0×10.sup.5 (Pa) or less.

Disclosed herein are low density fiber cement articles, such as fiber cement building panels and sheets, comprised of multiple overlaying fiber cement substrate layers having small and uniform entrained air pockets and low density fillers distributed throughout. The combination of entrained air pockets and low density fillers provide a low density fiber cement matrix with physical and mechanical properties similar to comparable low density fiber cement matrix without entrained air pockets.

In one aspect, there is provided a fabric containing gas therein, the fabric comprising a weave between warps and wefts, wherein each warp includes an elongate array of a plurality of individual gas cells, wherein neighboring gas cells are physically coupled to each other via a connection, wherein the connection is monolithic with the gas cells, and each cell contains the gas therein.

An impregnation system and a method for impregnating a textile fabric for composite components are described. A matrix 2 can be applied to a textile fabric 1 in such a way that the matrix 2 penetrates it at least partially and/or at least on one side. A first and a second endless belt 1 each designed as a belt loop are provided for the impregnation system. Between the first 4 and the second belt loop 5, the textile fabric 1 can guided on the mutually facing surfaces 6 of the belt loops and can be impregnated there. The deflection rollers 7 are provided in the respective belt loop 4, 5 of the respective endless belts at the deflection areas, with at least one roller being adjustable in the direction of the mutually facing surfaces 6 of the belt loops 4, 5. By adjusting the rollers 8 in the y direction, the wrap angle and thus the pressure exerted on the textile fabric during impregnation is controlled.

Disclosed herein are low density fiber cement articles, such as fiber cement building panels and sheets, comprised of multiple overlaying fiber cement substrate layers having small and uniform entrained air pockets distributed throughout. Also disclosed herein are air entrainment systems and methods for manufacturing aerated low density fiber cement panels or sheets with consistent air void content and uniform air void distribution. Also disclosed herein are air entrainment technologies adapted to work in conjunction with the Hatschek process to produce aerated fiber cement articles having controlled air void content and distribution.

A graphite material has a flexible part and can be utilized as a heat-conveying material in a narrow space. The graphite material, includes: at least one heat-conveying part; and a flexible part. A method for producing a graphite material, includes: (i) subjecting at least one film serving as a material to a heat treatment to obtain at least one carbonaceous film; (ii) providing a monolayer or multilayer structure including the at least one carbonaceous film; and (iii) applying heat and pressure to at least one part of the monolayer or multilayer structure in an inert atmosphere.

An attachment tag that includes a tag portion having a first surface and a second surface, and an adhesive layer disposed on the second surface of the tag portion and configured to adhere to a product. The attachment tag also includes an elastomer portion having an expandable portion configured to further secure the attachment tag to the product and/or to secure the attachment tag to a second product, and a layer portion that is co-extensive with the expandable portion, and includes a bond zone that is bonded to the tag portion.

A seal-healing material that is used to form fuel tanks and other fuel containing items uses a pair of reagents disposed within multiple individual cells on either side of a polymer film with other polymer films forming the outer boundaries of each set of cells. The reagents, when mixed, chemically react to form a sealant. An elastomeric sheet is bound to each polymer film such that a fibrous material is disposed between each polymeric film and elastomeric film.