D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
25/111, 18/542
D01D 5/42 (2006.01) B28B 23/00 (2006.01) C04B 16/06 (2006.01)
Patent
CA 1145517
ABSTRACT The invention relates to a process for the manufacture of objects from water-hardened materials, reinforced with one or more reti- culate webs, one over the other, which webs have been obtained by stretching, fibrillating and spreading of a film of organic polymeric material, by continuously supplying one or more reticulate webs, con- tacting them with a water-hardening material and water, thus forming a composite material, and shaping and hardening this material. This is obtained according the invention in that: a. one or ore reticulate webs, one on top of the other, are continuously supplied and laid on a carrier; b. the reticulate webs are folded zig-zag on this carrier; c. the folded network is continuously transported in a direction vir- tually normal to the direction in which the reticulate webs are supplied; d. subsequently, the folded network is contacted, directly or indirectly, with a water-hardening material and water. The rate of supply of the reticulate webs to be folded and the rate of discharge of the folded networks is such that the angle between two successive folded sides of the reticulate webs is between 1/2° and 120°, in particular between 50° and 90° and most in particular between 1° and 20°. Reticulate webs are applied to one side or to both sides of the resulting folded network, which webs have been stretched and fibrillated longitudinally and in the transport direction and are supplied in the direction of motion of the folded network, and in particularly, at only one of the two sides of the resultant folded network, reticulate webs stretched in the transport direction are applied, and at the other side only one or two of such webs. The resulting folded network packages are integrated to a whole by welds at the sides and passed between two rollers prior to being con- tacted with a water-hardening material.
367358
Bijen Jan M. J. M.
Bomers Joseph J.p.
Ellis David G.
Jansen Johann J.
Fetherstonhaugh & Co.
Stamicarbon B.v.
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