Patent ID: 6835436
Filing Date: 2004-12-28
Classification: B29C,Y10T

Abstract:
A plastic structural element, comprising: a fiber reinforced plastic material with a matrix-forming plastic; an insert having a length embedded in the matrix-forming plastic and a length that projects from the fiber reinforced plastic material whereby the length of the insert that projects from the fiber reinforced plastic material forms a connection for connecting attachment means, the insert exhibiting different values of at least one of elastic modulus and thermal expansion coefficients compared to the fiber reinforced plastic material; and a plastic coupling layer arranged on a surface of the insert to join the insert to the fiber reinforced plastic material, the coupling layer being an intermediate layer of fiber-reinforced plastic, the fibers of which are not embedded in the matrix-forming plastic of the plastic structural element, the coupling layer being of a material different from the fiber reinforced plastic material of the plastic structural element, and having a volume fraction of fibers, type of fibers, length of fibers and alignment of fibers or fiber layers so that at least one of the elastic modulus and the coefficient of thermal expansion changes through the coupling layer whereby the elastic modulus and the coefficient of thermal expansion between the fiber reinforced plastic material and the insert are equilibrated so that differences in at least one of the elastic modulus and the coefficient of thermal expansion at an interface between the fiber reinforced plastic material and the insert are minimized.