B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/746
B29C 47/02 (2006.01) B29C 47/20 (2006.01) B29C 47/70 (2006.01)
Patent
CA 1319800
- 12 - ABSTRACT An extrusion head (1) for producing sheet material (2), particularly elastomeric material, reinforced internally with relatively close-packed metal or textile cords (3); on which a die adapter (8) houses a "mandrel" (23) aligned with an output die (16) for the extruded sheet material (2) and having an axial slot (31) for feeding the rein- forcing cords (3) to the die (16); the aforementioned man- drel (23) having, on its front end facing the die (16), an insert (32) defining, together with the die adapter (8), an upper channel (34) and a lower channel (35) for supplying plastic material; which insert (32) consists of an upper element (40) and a lower element (41) the front ends of which are arranged contacting so as to de- fine a cord output guide member (56), and the rear ends of which are gripped together with the interposition of an intermediate element (47), so as to define two super- imposed cord input guide members (61, 62) converging in- side the output guide member (56), having a cord density equal to half that of the output guide member (56), and offset by half the cord spacing in relation to each other.
598018
Firestone Tire & Rubber Company (the)
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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