Title:
RACKET FRAME MADE OF FIBER-REINFORCED PLASTICS AND METHOD FOR ITS MANUFACTURE
Document Type and Number:
Japanese Patent JPH01121074
Kind Code:
A
Abstract:
PURPOSE: To improve attenuating ability of vibration and fatigue strength of a frame part by mixing a thermosetting long fiber reinforced plastic with a thermoplastic long fiber reinforced plastic. CONSTITUTION: In the structure of a racket frame 1 made of a fiber-reinforced plastic, a thermosetting long fiber reinforced plastic is mixed with a thermoplastic fiber reinforced plastic. To form the racket frame 1, for example, a core material 4 made of a synthetic resin foam is covered with a thermosetting long fiber reinforced plastic 5 and moreover the outermost layer of the frame is molded by the thermoplastic long fiber reinforced plastic 6. In the molding, there are arranged a process of covering the core material with a prepreg impregnated with a thermosetting resin and a process of covering it with a sheet or a cylinder made of the thermoplastic long fiber reinforced plastic. After the work is set in a die for molding, the die is heated and moreover, cooled and then, released to complete the formation.
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| JPS5453166 | METHOD OF MAKING RACKET WITH SHELL STRUCTURE |
| JP4087573 | Fishing / sports equipment |
Inventors:
HAYASHI KEIJIRO
HIGUCHI RYOJI
HIGUCHI RYOJI
Application Number:
JP28018887A
Publication Date:
May 12, 1989
Filing Date:
November 05, 1987
Export Citation:
Assignee:
MIZUNO KK
International Classes:
A63B49/10; A63B49/14; A63B102/02; A63B102/04; (IPC1-7): A63B49/10; A63B49/14
Domestic Patent References:
| JPS5241037A | 1977-03-30 | |||
| JPS5266033A | 1977-06-01 | |||
| JPS63309284A | 1988-12-16 |