B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
154/53.09, 154/8
B29C 53/84 (2006.01) B29C 37/00 (2006.01) B29C 53/80 (2006.01) B29C 53/82 (2006.01) B29C 70/52 (2006.01)
Patent
CA 1301038
A b s t r a c t A stationary mandrel (1) is wrapped in a separat- ing film (3) at the front, as seen in the draw-off direc- tion (A). A gel coat layer is coated onto the film (3) and partly gelled by means of a heater (12). The gel coat layer is coated with liquid polyester, wrapped in a longitudinally extending glass-fibre fabric (20) in an overlapping manner and wound helically in a glass sliver (21). These layers are hardened by means of a further heater (24,25), so that a structural supporting profile for coating on the follow- ing layers is obtained. The mandrel (1) is set off after the further heater (24,25). For coating on the further layers, liquid polyester, a fibre fabric (34) and a helic- ally wound sliver (37) are applied alternately. These layers are fulled and coated with an outer gel coat layer. The polyester is hardened in an oven (50). A grab device (52) draws the section off continuously from the mandrel (1). Finally, the section is cut to length. A hollow section of high strength is produced by means of this process. (Figures 1a and 1b)
527945
Arundo Technology Ag
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
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