A fabrication method for a press hardened part is provided. A sheet or a steel substrate blank for heat treatment is provided. A pre-coating is applied. The pre-coating has at least one layer of aluminum or aluminum alloy in contact with the steel substrate on at least one of the principal faces of the sheet or blank. Then a polymerized layer is deposited on the pre-coating. The polymerized layer has a thickness between 2 and 30 μm. The polymerized layer does not contain silicon, has a nitrogen content of less than 1% by weight and carbon pigments in a quantity between 3 and 30% by weight. The blank or the sheet is heated to obtain an interdiffusion between the steel substrate and the pre-coating and to give the steel a partly or totally austenitic structure. Then the blank or the sheet is hot stamped to obtain a part. The part is cooled by holding the part in a stamping tool so that the microstructure of the steel substrate includes, at least in a portion of the part, martensite or bainite.

A fabrication method for a press hardened part is provided. A sheet or a steel substrate blank for heat treatment is provided. A pre-coating is applied. The pre-coating has at least one layer of aluminum or aluminum alloy in contact with the steel substrate on at least one of the principal faces of the sheet or blank. Then a polymerized layer is deposited on the pre-coating. The polymerized layer has a thickness between 2 and 30 μm. The polymerized layer does not contain silicon, has a nitrogen content of less than 1% by weight and carbon pigments in a quantity between 3 and 30% by weight. The blank or the sheet is heated to obtain an interdiffusion between the steel substrate and the pre-coating and to give the steel a partly or totally austenitic structure. Then the blank or the sheet is hot stamped to obtain a part. The part is cooled by holding the part in a stamping tool so that the microstructure of the steel substrate includes, at least in a portion of the part, martensite or bainite.

The purpose of the invention is a method for coating a substrate made of an aluminum alloy in the AA3000 or AA5000 series, comprising the following steps: a) coating by (co-)extrusion of a polypropylene modified by maleic anhydride adhesion layer on each face of said substrate, and a surface layer made of polypropylene comprising at least one slip agent, so as to form a metalloplastic strip; b) calendering said metalloplastic strip; c) heat treatment of said metalloplastic strip; d) cooling of the metalloplastic strip, to obtain an H48 metallurgical temper and a coefficient of friction of 0.06 or less. The method being particularly suitable for the fabrication of food packaging and particularly for beverage can lids.

The purpose of the invention is a method for coating a substrate made of an aluminum alloy in the AA3000 or AA5000 series, comprising the following steps: a) coating by (co-)extrusion of a polypropylene modified by maleic anhydride adhesion layer on each face of said substrate, and a surface layer made of polypropylene comprising at least one slip agent, so as to form a metalloplastic strip; b) calendering said metalloplastic strip; c) heat treatment of said metalloplastic strip; d) cooling of the metalloplastic strip, to obtain an H48 metallurgical temper and a coefficient of friction of 0.06 or less. The method being particularly suitable for the fabrication of food packaging and particularly for beverage can lids.

The purpose of the invention is a method for coating a substrate made of an aluminum alloy in the AA3000 or AA5000 series, comprising the following steps: a) coating by (co-)extrusion of a polypropylene modified by maleic anhydride adhesion layer on each face of said substrate, and a surface layer made of polypropylene comprising at least one slip agent, so as to form a metalloplastic strip; b) calendering said metalloplastic strip; c) heat treatment of said metalloplastic strip; d) cooling of the metalloplastic strip, to obtain an H48 metallurgical temper and a coefficient of friction of 0.06 or less. The method being particularly suitable for the fabrication of food packaging and particularly for beverage can lids.

A 3D printing process for manufacturing an article, which is a powder bed fusion additive manufacturing process, the process comprising the steps of: (i) provision of a first layer comprising a printing material, said printing material comprising polypropylene in non-nucleated and/or alpha-nucleated form; (ii) the optional provision of a second layer to at least a portion of the first layer; (iii) application of heat to at least a portion of the layer or layers; and (iv) optionally repeating steps (i) to (iii) one or more times; wherein the first layer or the second layer comprises a beta nucleating agent, and wherein the temperature of the printing material is between the melting temperature and the crystallisation temperature of the printing material. Also described is an ink for 3D printing, wherein the 3D printing process is a powder bed fusion additive manufacturing process, the ink comprising a beta nucleating agent, the use of the ink and an article obtained by the process.

A 3D printing process for manufacturing an article, which is a powder bed fusion additive manufacturing process, the process comprising the steps of: (i) provision of a first layer comprising a printing material, said printing material comprising polypropylene in non-nucleated and/or alpha-nucleated form; (ii) the optional provision of a second layer to at least a portion of the first layer; (iii) application of heat to at least a portion of the layer or layers; and (iv) optionally repeating steps (i) to (iii) one or more times; wherein the first layer or the second layer comprises a beta nucleating agent, and wherein the temperature of the printing material is between the melting temperature and the crystallisation temperature of the printing material. Also described is an ink for 3D printing, wherein the 3D printing process is a powder bed fusion additive manufacturing process, the ink comprising a beta nucleating agent, the use of the ink and an article obtained by the process.

Disclosed is a nonaqueous electrolyte battery using an aqueous sealant composition. The aqueous sealant composition comprises an aqueous dispersion in an amount of 70 mass % or more and 97 mass % or less by mass of solid content, wherein the aqueous dispersion comprises an olefinic polymer as a main component, and a water-soluble polymer in an amount of 3 mass % or more and 30 mass % or less by mass of solid content. The aqueous dispersion comprises an olefinic polymer as a main component. The olefinic polymer is a modified olefinic polymer. The modified olefinic polymer is a partial copolymer of a polymer selected from a group consisting of polyethylene, polypropylene, polybutene and ethylene-propylene polymers, and a polymerizable unsaturated organic acid selected from a group consisting of maleic anhydride, acrylic acid, methacrylic acid and esters thereof.

Disclosed is a nonaqueous electrolyte battery using an aqueous sealant composition. The aqueous sealant composition comprises an aqueous dispersion in an amount of 70 mass % or more and 97 mass % or less by mass of solid content, wherein the aqueous dispersion comprises an olefinic polymer as a main component, and a water-soluble polymer in an amount of 3 mass % or more and 30 mass % or less by mass of solid content. The aqueous dispersion comprises an olefinic polymer as a main component. The olefinic polymer is a modified olefinic polymer. The modified olefinic polymer is a partial copolymer of a polymer selected from a group consisting of polyethylene, polypropylene, polybutene and ethylene-propylene polymers, and a polymerizable unsaturated organic acid selected from a group consisting of maleic anhydride, acrylic acid, methacrylic acid and esters thereof.

The present invention provides polymer compositions having improved corrosivity, color stability and clarity. Also disclosed is a process of preparing the polymers. The process may comprise incorporating into the polymer an acid neutralizing amount of an amorphous aluminum silicate. The amorphous aluminum silicate may be present in the polymer in an amount such that the polymer composition having a Corrosivity Index of less than 6. A refractive index of the amorphous aluminum silicate may be the same or substantially the same as a refractive index of the polymer.