D - Textiles – Paper – 03 – D
Patent
D - Textiles, Paper
03
D
118/33
D03D 15/00 (2006.01) B29C 70/16 (2006.01) B29C 70/22 (2006.01) B65G 15/36 (2006.01) D03D 15/02 (2006.01) D07B 1/06 (2006.01)
Patent
CA 1096717
IMPROVEMENTS IN OR RELATING TO THE REINFORCEMENT OF RESILIENT ARTICLES ABSTRACT OF THE DISCLOSURE The invention relates to the reinforcement of resilient articles, that must exhibit a degree of flex- ibility in use, e.g. conveyor belts. The invention pro- vides a steel cord for reinforcing such resilient articles, which cord has been provided with crimps along its length so as to increase its elongation coefficient. This co- efficient is subsequently such that, at substantially 10% of its breaking strength, the cord has an elongation of at least 0.3%, the crimps being such as to avoid excessive damage to the cord filaments. Also disclosed are a method of reinforcing such an article by embedding therein a plurality of such steel cords substantially parallel to each other in a generally planar array. The cords can be incorporated in a woven fabric which is embedded in the article. In the preferred construction the crimps define a generally triangular or quasi-triangular wave form, wherein the wavelength (p) of the crimps and the crimp amplitude (c) satisfy the relationship:- 0.02p ? C ? 0.07p, wherein the wavelength (p) and the cord diameter (d) satisfy the relationship:- 8d ? p ? 18d, and wherein the crimp wavelength (p) satisfies the relationship:- Image where: E is the elastic modulus of the uncrimped cord, in N mm2 I is the moment of inertia of the uncrimped cord in mm4 and P is in mm.
311323
Vanassche Roger
Verbauwhede Germain
Kirby Eades Gale Baker
N.v. Bekaert S.a.
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