The invention relates to an intermediate product intended for the production of a composite part in combination with a resin matrix, formed by at least two unidirectional sets of reinforcing yarns, the yams of each set extending in a different direction, whereby the sets are interlinked by means of stitching or knitting using at least one stitching or knitting yarn. The invention is characterized in that the stitching or knitting yarn has a yarn count of less than or equal to 30 dTex, preferably less than or equal to 25 dTex, in accordance with standard EN ISO 2060.

Systems and methods relating to a composite flat panel, curved panel, hand-layup panel, prepreg, skin, or composite core matrix panel are provided. In some aspects, it includes a core sandwiched between a first layer and a second layer. At least one of the first layer or the second layer includes a hardening material. At least one of the first layer or the second layer includes a basalt fiber. In other aspects, it includes a hand-layup panel, prepreg, or skin. The hand-layup panel, prepreg or skin includes a layer that includes a hardening material. The layer includes a basalt fiber. In other aspects, it includes a hand-layup panel, prepreg, or skin. It includes a first layer and a second layer, each of the first and second layer includes a hardening material. Each of the first and second layer includes a basalt fiber.

A lithium-ion battery outer package material includes a base layer, a first adhesive layer, a metallic foil layer, a corrosion prevention treatment layer, a second adhesive layer, and a sealant layer sequentially layered on one of the surfaces of the base layer. When a tensile test is performed in a 23 C. and 40% RH environment, with the specimen width being 15 mm, the distance between gauge points being 50 mm, and the tensile speed being 100 mm/min, the tensile elongation and tensile stress of the specimen are measured. A ratio of tensile elongation measured in a first direction to tensile elongation measured in a second direction is from 135:85 to 140:75, and a ratio of tensile stress measured in the first direction to tensile stress measured in the second direction is from 195:225 to 200:229.

A lithium-ion battery outer package material, provided with: a base layer, and a first adhesive layer, a metallic foil layer, a corrosion prevention treatment layer, a second adhesive layer, and a sealant layer sequentially layered on one of the surfaces of the base layer. When a tensile test (a sample of the substrate layer is stored for 24 hours in a 23 C. and 40% RH environment; a tensile test is subsequently performed in a 23 C. and 40% RH environment with the specimen width being 15 mm, the distance between gauge points being 50 mm, and the tensile speed being 100 mm/min; and the tensile elongation and tensile stress of the specimen are measured) is performed, the tensile elongation in a first direction, which is either the TD direction or the MD direction of the sample, relative to the length of the sample is from about not less than 50% to less than 80%, and the tensile stress in a second direction, which is perpendicular to the first direction, is from about not less than 150 to 230 MPa.

The invention relates to a biaxially oriented single-layer or multilayer porous film which comprises at least one porous layer and said layer comprises at least one propylene polymer, at least one -nucleating agent and particles, said particles having a melting point of over 200 C. and at most an agglomerate or at most a particle having a particle size of >1 m being detectable on a REM recording of a film sample of 10mm2.

A sewing system can include a sewing machine; a vacuum pump; and a polymer bag configured to hold a fiber preform and to connect to the vacuum pump so that gas inside the polymer bag is removable by the vacuum pump to thereby reduce a pressure inside the polymer bag to less than an ambient pressure of an outside of the polymer bag, and to compress the fiber preform to a compressed thickness thereby forming a compressed fiber preform, so that a pattern of stitches of a filament are stitchable through the polymer bag and the compressed fiber preform by the sewing machine while the pressure inside the polymer bag is less than the ambient pressure.

A composite material for a component of a golf club head is disclosed herein. The composite material includes a composite layers and at least one an interlaminar layer that includes one of vertically aligned carbon nanotubes, Z-Axis aligned carbon fibers or graphene platelets. In one preferred embodiment, the golf club head component is a face component.