BICYCLE FRAME

• Main Authors: JIANG, Chaodong, TJAHJADI, Mahari, GREIN, Christelle Marie Hélène, GUO, Mark, SOLIMAN, Maria, KHANDELWAL, Ratnesh
• Format: Patent
• Language: English; French
• Published: 12.03.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; CYCLE AXLE SUSPENSIONS; CYCLE FRAMES; CYCLE SIDE-CARS, FORECARS, OR THE LIKE; CYCLE STEERING DEVICES; CYCLES; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FORCYCLES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The invention relates to a bicycle frame made by injection molding pellets of a long glass fibre reinforced polypropylene composition having a core containing glass fibres and an impregnating agent and a sheath of polypropylene surrounding said core, wherein the pellets have an average length of at least 1 mm, the amount of the glass fibers is 10 to 70 wt% with respect to the composition and the polypropylene has a flexural modulus determined according to ASTM D790A of at least 1000 N/mm2. L'invention se rapporte à un cadre de bicyclette réalisé par moulage par injection de pastilles d'une composition de polypropylène renforcée par de longues fibres de verre ayant un noyau contenant des fibres de verre et un agent d'imprégnation et une gaine de polypropylène entourant ledit noyau, les pastilles ayant une longueur moyenne d'au moins 1 mm, la quantité des fibres de verre étant comprise entre 10 et 70 % en poids par rapport à la composition et le polypropylène présentant un module de flexion déterminé selon la norme ASTM D790A d'au moins 1000 N/mm2.