公开(公告)号：US20220402170A1

公开(公告)日：2022-12-22

申请号：US17774975

申请日：2020-11-05

Applicant: Arkema France

Inventor： Thibaut SAVART ,  Arthur Pierre BABEAU ,  Axel SALINIER ,  Denis HUZE

IPC: B29B15/14 ,  B29C70/00 ,  B29C70/16 ,  B29C70/50

Abstract: A method for manufacturing an impregnated fibrous material comprising at least one fibrous material made of continuous fibres and at least one thermoplastic polymer matrix comprises a step of pre-impregnating the fibrous material with a thermoplastic polymer matrix in powder form. This step is carried out dry in a tank comprising a fluidized bed, while keeping the level h of the powder and the mass m of the powder present in the tank substantially constant. The level h is from hi to hi−3%, during implementation of the pre-impregnation step, and hi is the initial level of the powder in the tank at the start of implementation of the pre-impregnation step, the mass m is from mi to mi±0.5% during implementation of the pre-impregnation step, and mi is the initial mass of the powder in the tank at the start of implementation of the pre-impregnation step.

公开(公告)号：US20210086403A1

公开(公告)日：2021-03-25

申请号：US17040307

申请日：2019-03-19

Applicant: Arkema France

Inventor： Thibaut SAVART ,  Gilles HOCHSTETTER ,  Anthony FLORENCIE ,  Patrice GAILLARD ,  Axel SALINIER ,  Arthur Pierre BABEAU

IPC: B29B15/12

Abstract: A web of impregnated fibrous material(s) including N individual tapes of fibrous material(s) stacked and/or joined in relation to one another, in which said N tapes adhere to each other and can overlap at least partially. The tapes of fibrous material(s) include continuous fibers impregnated with at least one thermoplastic polymer, and optionally a chain extender. The web has a surface, in cross-section perpendicular to the axis of the fibers, S, that is substantially equal to the sum of the surface, in cross-section perpendicular to the axis of the fibers, of each initial individual tape, denoted Sth, Sth being equal to N×I×Ep, wherein l represents the average width of a tape and Ep represents the average thickness of a tape, N being between 2 and 2000, and the average thickness of each individual tape being less than or equal to 150 μm.