A method for welding a first hose end at a joint with a second hose end in a seam that extends on a circumference of the first hose end, the method comprising the steps: applying a protective layer at the joint to an inside of the first hose end; pushing the second hose end beyond the joint over the first hose end; pressing the first hose end and the second hose end together flat at the joint between two first damping jaws that are moved towards each other; welding the first hose end and the second hose end together by two first partial seams while pressed together, wherein the protective layer prevents a welding of the inside of the first hose end; releasing the first hose end and the second hose end from the two first clamping jaws after welding the two first partial seams.

The invention in relates in particular to a rubber composition able to be extruded to form an inner layer of a fuel hose for a motor vehicle, a method for preparing this composition, this hose and a fuel feed circuit of a motor vehicle incorporating it. This composition is based on at least one fluoroelastomer (FKM) and includes a filler and a micronised powder of at least one fluorinated thermoplastic polymer which are dispersed in said at least one fluoroelastomer. According to the invention, the composition includes said micronised powder according to a quantity greater than 20 phr (phr: parts by weight per 100 parts of elastomer(s)), and the filler includes at least one inorganic filler having lamellas which has an aspect ratio greater than 30 and which is based on a phyllosilicate chosen from kaolinite and micas, or is based on a talc.

A method of manufacturing a carbon fiber wheel rim is provided, including flowing steps of: preparing a core ring, including a core material which is disintegrable and annular; continuously obliquely winding at least one first dry carbon yarn around the core ring, to form a first semifinished rim; placing the first semifinished rim in a mold, and performing vacuuming, resin injection and thermoforming, to form a second semifinished rim; removing the second semifinished rim out of the mold, and disintegrating and removing the core material.

A multi-layer inner tube for a vehicle wheel, the multi-layer inner tube including an inner layer that is in contact with a gaseous filling of the inner tube; and an outer layer that differs from the inner layer, wherein the outer layer is in contact with an exterior environment of the inner tube, and wherein the inner layer and the outer layer are made from a thermoplastic polyurethane; and an intermediary layer made from an ethylene vinyl alcohol copolymer arranged between the inner layer and the outer layer.

A method for welding a first hose end at a joint with a second hose end in a seam that extends on a circumference of the first hose end, the method comprising the steps: applying a protective layer at the joint to an inside of the first hose end; pushing the second hose end beyond the joint over the first hose end; pressing the first hose end and the second hose end together flat at the joint between two first damping jaws that are moved towards each other; welding the first hose end and the second hose end together by two first partial seams while pressed together, wherein the protective layer prevents a welding of the inside of the first hose end; releasing the first hose end and the second hose end from the two first clamping jaws after welding the two first partial seams.

A method of manufacturing a carbon fiber wheel rim is provided, including flowing steps of: preparing a core ring, including a core material which is disintegrable and annular; continuously obliquely winding at least one first dry carbon yarn around the core ring, to form a first semifinished rim; placing the first semifinished rim in a mold, and performing vacuuming, resin injection and thermoforming, to form a second semifinished rim; removing the second semifinished rim out of the mold, and disintegrating and removing the core material.

The invention in relates in particular to a rubber composition able to be extruded to form an inner layer of a fuel hose for a motor vehicle, a method for preparing this composition, this hose and a fuel feed circuit of a motor vehicle incorporating it. This composition is based on at least one fluoroelastomer (FKM) and includes a filler and a micronised powder of at least one fluorinated thermoplastic polymer which are dispersed in said at least one fluoroelastomer. According to the invention, the composition includes said micronised powder according to a quantity greater than 20 phr (phr: parts by weight per 100 parts of elastomer(s)), and the filler includes at least one inorganic filler having lamellas which has an aspect ratio greater than 30 and which is based on a phyllosilicate chosen from kaolinite and micas, or is based on a talc.