TITLE: STRUCTURAL MATERIAL AND PROCESS FOR ITS PRODUCTION.
European Patent Application EP0231381 A4

ABSTRACT:
Abstract of EP0231381
This structural material is composed of a polyamide resin reinforced by
a reinforcing material composed of continuous filaments and/or long
fibres. The reinforcing material is surface-treated with a
surface-treatment agent for nylon, soluble in alcohol and/or water. The
specific viscosity (eta) of the polyamide resin is more than 1.8 poise.
The amount of reinforcing material used is 10-80 wt.% of the polyamide
resin. The structural material is shaped as a stick or a tennis racket.
The structural material is produced by means of a polymer casting
method composed of the following processes: (1) The surface treated
fibrous reinforcing material is arranged in a specific shape. (2) The
arranged material is placed in a mould. (3) A molten omega-lactam
containing a polymerisation catalyst and an initiator is introduced
into the mould. (4) The reinforced polyamide resin is obtained by
heating the mould.

INVENTORS:
Tominaga, Ichiro
Matuki, Taketo
Yamaguchi, Tetuo
Matushita, Hiroomi
Niwa, Kunio

APPLICATION NUMBER: EP19860903577
PUBLICATION DATE: 08/29/1988
FILING DATE: 05/30/1986

ASSIGNEE: Sumitomo, Rubber Ind (JP)
INTERNATIONAL CLASSES: A63B49/10; B29C39/10; C08J5/04; (IPC1-7): B29C39/10
EUROPEAN CLASSES: A63B49/10; C08J5/04+L77/02