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：US20210276225A1

公开(公告)日：2021-09-09

申请号：US17327831

申请日：2021-05-24

Applicant: Arkema France

Inventor： Gilles HOCHSTETTER ,  Mathieu CAPELOT ,  Thibaut SAVART ,  Arthur Pierre BABEAU ,  Denis HUZE ,  François TANGUY ,  Patrice GAILLARD

IPC: B29B15/12 ,  B29C35/08

Abstract: An impregnated fibrous material comprising a fibrous material of continuous fibers and at least one thermoplastic polymer matrix, wherein at least one thermoplastic polymer is a non-reactive amorphous polymer whose glass transition temperature is such that Tp≥80° C., or a non-reactive semi-crystalline polymer whose melting temperature is Tf≥150° C., where Tg and Tf are determined by differential scanning calorimetry (DSC) according to standard 11357-2:2013 and 11357-3:2013 respectively, a fiber content by volume is constant in at least 70% of the volume of the impregnated fibrous material, the fiber content in said impregnated fibrous material being between 45 and 65% by volume on both sides of said fibrous material, a porosity rate in said impregnated fibrous material being less than 10%.

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.

公开(公告)号：US20170165875A1

公开(公告)日：2017-06-15

申请号：US15118188

申请日：2015-02-11

Applicant: ARKEMA FRANCE

Inventor： Patrice GAILLARD ,  Gilles HOCHSTETTER ,  Thibaut SAVART

IPC: B29B15/12 ,  B29C70/38 ,  B29C70/50

CPC classification number: B29B15/12 ,  B29B15/122 ,  B29C70/382 ,  B29C70/506 ,  B29K2101/12 ,  B29K2105/10

Abstract: A method of producing a pre-impregnated fibrous material including a fibrous material of continuous fibres and a thermoplastic polymer matrix, wherein the pre-impregnated fibrous material is produced in a single unidirectional strip or in a plurality of parallel unidirectional strips, the method including the following steps: (i) impregnating the fibrous material in the form of a strand or a plurality of parallel strands with the thermoplastic polymer in the form of a powder in a fluid bed; and (ii) shaping the strand or parallel strands of the fibrous material impregnated as in step (i) by calendering by at least one heating calender in the form of a single unidirectional strip or of a plurality of parallel unidirectional strips, the heating calender, in the latter case, including a plurality of calendering grooves, and the pressure and/or a spacing between the rollers of the calender being regulated by an auxiliary system.