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    A MULTILAYER STRUCTURE AND AUTOMOTIVE COMPONENT MADE THEREOF
    2.
    发明公开
    A MULTILAYER STRUCTURE AND AUTOMOTIVE COMPONENT MADE THEREOF 审中-公开

    公开(公告)号：EP3335871A1

    公开(公告)日：2018-06-20

    申请号：EP17208509.4

    申请日：2017-12-19

    申请人： Adler Evo S.r.l.

    发明人： LESAGE, Giorgio ,  TOCCHI, Gabriele ,  ROSSI, Samuele ,  TARELLO, Maurizio

    IPC分类号： B32B5/02 ,  B32B5/08 ,  B32B5/18 ,  B32B5/24 ,  B32B5/26 ,  B32B23/04 ,  B32B23/10 ,  B32B27/06 ,  B32B27/12 ,  B32B27/32 ,  B32B37/06

    摘要： The present invention relates to a multilayer structure comprising: - a layer α1; - a porous fibrous layer α2 comprising: (i) a fibrous felt material selected from the group consisting of a fiber mixture composition of a synthetic fiber and a glass fiber, a fiber mixture composition of a synthetic fiber and a natural fiber; a natural fiber being said fibrous felt material in amount of at most 70% by weight of the total weight of the porous fibrous layer; and (ii) a phenolic thermosetting resin in amount of at most 30% by weight of the total weight of the porous fibrous layer; - a porous-cellular layer β comprising a semirigid, thermoformable polyurethane foam obtainable by a polyether and diphenylmethane diisocyanate,and - a layer γ, wherein the elastic modulus E of said structure is proportional to the value of the following formula (1) wherein SW is the superficial weight (g/m 2 ) of each layer; n is the number of layers in structure; α is the sound absorption coefficient, for normal angle wave incidence, at specified frequency; t max is the maximum final thickness of the structure and λ is the total thermal conductivity. The present invention relates also to an automotive component made of the multilayer structure according to the invention.