Synthetic fibers having down/feather-like characteristics and suitable for wadding
AssigneeToyo Boseki Kabushiki Kaisha
InventorHiroshige Sugiyama
Life of this patent
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Abstract
A synthetic fiber for wadding which has a plurality of projections in its cross section and a section deformation ratio (S) of not less than 5000/.sqroot.D (wherein D is a monofiber denier) and which has the following physical characteristics: Monofiber denier (D, denier): 0.1 to 3; Coefficient of inter-fiber static friction (.mu..sub.s): not more than 0.14; Crimp number (CN, number/25 mm): 4 to 14; Ratio of crimp index and crimp number (Ci(%)/CN): 0.6 to 1.8; H.sub.0.2 (cm): not less than 7.3; H.sub.0.2 /H.sub.25 (cm/cm): not less than 6.5; .delta..sub.D (g/cm.sup.2 /cm): not more than 0.4.
Claims4
A synthetic fiber for wadding which has a plurality of projections in its cross section and a section deformation ratio (S) of not less than 5000/.sqroot.D (wherein D is a monofiber denier) and which has the following physical characteristics:
- Monofiber denier (D, denier):
- 0.1 to 3;
- Coefficient of inter-fiber static friction (.mu..sub.s):
- not more than 0.14;
- Crimp number (CN, number/25 mm):
- 4 to 14;
- Ratio of crimp index and crimp number (Ci(%)/CN):
- 0.6 to 1.8;
- H.sub.0.2 (cm):
- not less than 7.3;
- H.sub.0.2 /H.sub.25 (cm/cm):
- not less than 6.5;
- .delta..sub.D (g/cm.sup.2 /cm):
- not more than 0.4.
Dependencies are inferred from the claim text.