Title:
METHOD OF MANUFACTURING A SHEET-LIKE COMPOSITE PART WITH IMPROVED COMPRESSION STRENGTH
Document Type and Number:
WIPO Patent Application WO/2020/074677
Kind Code:
A3
Abstract:
A method of manufacturing a sheet-like composite part, comprises the following process steps: a) providing a substantially planar arrangement (A, B, A') comprising a core layer (B) sandwiched between a pair of skin layers (A, A'), a first face of the core layer being adjacent and substantially parallel to a first one (A) of said skin layers and a second face of the core layer being adjacent and substantially parallel to the other one (A') of said skin layers, the skin layers (A, A') each comprising a skin thermoplastic and optionally reinforcement fibers, the core layer (B) comprising a fleece material made of fleece thermoplastic fibers and reinforcement fibers, b) heating and pressing the sandwich arrangement (A,B,A') followed by cooling, thereby obtaining the composite part. To improve compression strength of the composite part, the core layer (B) is a Z-oriented core layer having reinforcement fibers that are predominantly oriented in an orientation direction (Z) perpendicular to the first and second faces. Methods for providing the Zoriented core layer include multiple folding, longitudinal compression and needling with differential transport velocity.
Application Number:
PCT/EP2019/077546
Publication Date:
July 23, 2020
Filing Date:
October 10, 2019
Export Citation:
Assignee:
MITSUBISHI CHEMICAL ADVANCED MAT COMPOSITES AG (CH)
International Classes:
B29C70/24; B29D99/00; B32B3/28; B32B5/02; B32B5/26; B32B27/12
Domestic Patent References:
| WO1994016162A1 | 1994-07-21 |
Foreign References:
| US20100064491A1 | 2010-03-18 | |||
| DE3701592A1 | 1988-08-04 |
Attorney, Agent or Firm:
SCHMAUDER & PARTNER AG (CH)
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