Mitsubishi Rayon Company, Limited

Setsuo Kashiyama

Hisashi Tada

Hajime Gotoh

Toshihiro Hattori

Tadasi Yokochi

Yukihiro Sumikawa

Naonori Yoshioka

A honeycomb core comprising honeycomb ribbons individually obtained by laminating a plurality of sheets of paper comprising short fibers oriented in a specific direction with an orientation degree of 50% or more, wherein the term 'orientation degree' means the proportion of the number of fibers oriented at an angle in the range of .+-.5.degree. with the specific direction to the total number of fibers which is expressed in percentage. The honeycomb core of the present invention is lighter in weight than conventional honeycomb cores and has a high strength properties in a specific direction.

Honeycomb core

A fiber-reinforced plastic sheet molding compound comprising a sheet member (A) formed of a resin composition which consists of 30 to 90% by weight of a reinforcing cut fiber and 70 to 10% by weight of a matrix resin, at least one surface of said sheet member (A) being intimately applied to a sheet member (B) which is formed of the matrix resin and which has a thickness thinner than that of sheet member (A).

Fiber reinforced plastic sheet molding compound

Growing community of inventors

Nagoya, Japan

Setsuo Kashiyama