A polyolefin-based film composite has a uniaxially stretched first film layer and a second film layer bonded directly or indirectly to the first film layer. The second film layer is unstretched and has at least two integrally blocked film sublayers. A third film layer between the first and second layers can act as a barrier.

Tetrafluoroethene-based fluoropolymers of low gel content, methods of making the fluoropolymers, methods of extruding the fluoropolymers into articles, and extruded articles comprising the fluoropolymers.

In accordance with at least selected embodiments, the application, disclosure or invention relates to improved membranes, separator membranes, separators, battery separators, secondary lithium battery separators, multilayer membranes, multilayer separator membranes, multilayer separators, multilayer battery separators, multilayer secondary lithium battery separators, multilayer battery separators, electrochemical cells, batteries, capacitors, super capacitors, double layer super capacitors, fuel cells, lithium batteries, lithium ion batteries, secondary lithium batteries, and/or secondary lithium ion batteries, and/or methods for making and/or using such membranes, separator membranes, separators, battery separators, secondary lithium battery separators, electrochemical cells, batteries, capacitors, fuel cells, lithium batteries, lithium ion batteries, secondary lithium batteries, and/or secondary lithium ion batteries, and/or devices, vehicles or products including the same, and/or the like.

A sheathing material for an all solid state battery, the sheathing material including at least: a stack including a substrate layer, a barrier layer, and a heat fusible resin layer in this order; and an insulating layer provided on the heat fusible resin layer on the opposite side from the substrate layer side, wherein when an all solid state battery obtained by accommodating, in a packaged formed from the sheathing material for an all solid state battery, a battery element which includes at least a unit cell including a positive electrode active material layer, a negative electrode active material layer, and a solid state electrolyte layer stacked between the positive and negative electrode active material layers is seen in plan view, the insulating layer is disposed at a position covering the entire surface of the positive electrode active material layer in the all solid state battery.

A polyolefin multilayer microporous membrane includes at least first microporous layers which form both surface layers of the membrane and at least a second microporous layer disposed between the both surface layers, wherein static friction coefficient of one of the surface layers of the polyolefin multilayer microporous membrane against another surface layer in a longitudinal direction (MD) is 1.1 or less, and wherein pore density calculated from an average pore radius measured by mercury porosimetry method and porosity, according to Formula (1) is 4 or more:
Pore density=(P/A.sup.3)×10.sup.4  (1)
wherein A represents the average pore radius (nm) measured by mercury porosimetry method and P represents the porosity (%).

Biocompatible flexible laminate structure comprising an alternating stack of layers from polymers A and B or polymer blends AC and BD having the sequence -A-[B-A-].sub.n- or AC-[BD-AC-].sub.n with n from 4 to 36, wherein the layer thickness of layers A or AC and layers B or BD is less than 3 μm, wherein A and B are thermoplastic polymers and C and D are thermoplastic elastomers, at least part of the monomeric building blocks of polymer A, B or A and B are from renewable sources wherein the thermoplastic polymer B has functional barrier properties, wherein the amount of the thermoplastic elastomers C and D in the polymer blends AC and BD is each from 3 to 45 wt.-%, and polymer B and elastomer D are essentially incompatible.

The present invention refers to a multilayer heat shrinkable film characterized by a combination of desirable properties, such as high shrinkage, good optical properties, excellent sealability and puncture resistance. The invention further is directed to a method of producing said film. The invention is further directed to the use of said film or bags and pouches made therefrom for packaging goods as for example food products.

A reinforced multilayer material includes a mesh material covered on at least one side, and possibly both, by a layer of a resinous film material. The mesh material includes filaments that intersect one another, at least some of the filaments being composite filaments having a carrier portion of a relatively high melting point and a bonding portion of a relatively low melting point, the bonding portion of each composite filament being thermally bonded to other filaments at least some points of intersection. The multilayer material has a mass per unit area of less than 9.0 oz/yd.sup.2 and at least one of a) a bursting strength to mass per unit area ratio of at least 9.0 lbs./(oz/yd.sup.2), where bursting strength is measured in accordance with ASTM-D37 86 and b) a breaking elongation of at least 5% in the warp direction when breaking elongation is measured in accordance with ASTM-5034. A bag is provided that is made at least in part from a multilayer material having at least some of the characteristics described above.

This invention relates to inner-plies for bulk-bags that surprisingly offer not only high thermal resistance, but also high flex-crack resistance. This invention also relates to such bulk-bags made for packaging of flowable materials, aseptic or otherwise, and the process for improving their flex-crack and thermal resistance. Preferably, the packaging is aseptic. More specifically, the inner-ply of the invention comprises a resin blend comprising the Exceed® XP resin; an LDPE resin or an ethylene—α-olefin copolymer (EAO copolymer); or a blend of said LDPE resin and said EAO copolymer, with flex-crack resistance improved in both machine direction and transverse direction, in conjunction with an improved thermal resistance. Thus, in addition to possessing good flex-crack resistance, the bulk-bags can withstand steam sterilization and/or aseptic packaging conditions.

The present invention relates to an air-permeable laminate insulation material, and more specifically, to an air-permeable laminate insulation material including: an insulation material layer; an aluminum coating layer formed on one or both surfaces of the insulation material layer; a non-woven fabric layer formed on the aluminum coating layer; and a polyolefin composite layer which is made from a mixture of polyolefin and inorganic particles and laminated on top of the non-woven fabric layer.