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4. 发明专利

JPH0369603A HELMET 失效
公开(公告)号：JPH0369603A
公开(公告)日：1991-03-26
申请号：JP20313389
申请日：1989-08-05
申请人： TOYO BOSEKI , SHOEI KAKO KK
发明人： SHIRASAKI GIICHI , YOSHIDA ICHIRO
IPC分类号： A42B3/06 , B29C70/10 , B29L31/48
摘要： PURPOSE:To obtain an inexpensive, lightweight helmet excellent in penetration resistance and shock absorptivity and having high protective effect by reinforcing the outer ply with glass fiber layer and also reinforcing the inner ply with high-strength, high-modulus polyethylene fiber cloth layer. CONSTITUTION:The objective helmet consisting mainly of glass fiber-reinforced thermosetting resin. For the region falling within the range of making the shock absorptivity test specified by at least the JIS T 8133 (1982), the outer ply is reinforced with glass fiber layer 3 and the inner ply with high-strength, high- modulus polyethylene fiber cloth layer 4. It is preferable that said polyethylene fiber cloth be prepared by making satin woven cloths >=25g/de in tenacity and >=1000g/de in tensile modulus into a laminate 200-1000g/m in weight.

5. 发明专利

JPH0369605A HELMET 失效
公开(公告)号：JPH0369605A
公开(公告)日：1991-03-26
申请号：JP20313589
申请日：1989-08-05
申请人： TOYO BOSEKI , SHOEI KAKO KK
发明人： SHIRASAKI GIICHI , YOSHIDA ICHIRO
IPC分类号： A42B3/06 , B29C70/10 , B29L31/48
摘要： PURPOSE:To obtain the title large-sized, lightweight helmet excellent in shock absorptivity and penetration resistance and great in protectiveness by reinforcing both the outer and inner plies with glass fiber layers. respectively, and the interply with high-strength, high-modulus polyethylene fiber cloth layer. CONSTITUTION:The objective helmet consisting mainly of a fiber-reinforced thermosetting resin. For the region falling within the range of making the shock absorptivity test specified by the JIS T 8183 (1982), the outer ply is reinforced with a glass fiber layer, the interply with a high-strength. high-modulus polyethylene fiber cloth, and the inner ply with a second glass fiber layer. It is preferable that said polyethylene fiber cloth be plane woven one >=25g/de in tenacity, >=1200g/de in tensile modulus and 100-400g/m in weight.

6. 发明专利

JPH0369604A HELMET MADE OF FIBER-REINFORCED RESIN 失效
公开(公告)号：JPH0369604A
公开(公告)日：1991-03-26
申请号：JP20313489
申请日：1989-08-05
申请人： TOYO BOSEKI , SHOEI KAKO KK
发明人： SHIRASAKI GIICHI , YOSHIDA ICHIRO
IPC分类号： A42B3/06 , B29C70/10 , B29L31/48
摘要： PURPOSE:To obtain the title lightweight, inexpensive helmet excellent in penetration resistance and shock absorptivity and great in protectiveness by reinforcing the outer ply, the interply and then the inner ply with glass fiber layer, organic fiber cloth layer and glass fiber layer successively in this order and also by putting specific cloth layers between the respective plies. CONSTITUTION:The objective helmet consisting mainly of a fiber reinforced thermosetting resin having both glass fiber layer and organic fiber cloth layer. For the region falling within the range for making the shock absorptivity test specified by the JIS T 8133 (1982), a glass fiber layer as the outer ply, a general- purpose organic fiber cloth layer as the interply and a second glass fiber layer as the inner ply are mutually laminated, and furthermore, high-strength, high- modulus polyethylene fiber cloths are put between the outer ply and the interply and/or between the interply and inner ply. It is preferable that said polyethylene fiber cloth be plain woven one >=25g/de in tenacity, >=1000g/de in tensile modulus and 100-300g/m in weight.

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