B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 30/20 (2006.01) B29C 65/00 (2006.01) B29D 30/30 (2006.01) B29D 30/70 (2006.01) B29C 53/38 (2006.01)
Patent
CA 2058397
METHOD OF FORMING PLY MEMBER ABSTRACT OF THE DISCLOSURE A method of forming a ply member such as a carcass ply for a radial tire. The ply member is formed a plurality of belt-shaped members having a width obtained by multiplying .pi. inches by an integral number (1, 2, 3, ...) and a constant length. These belt-shaped members are successively attached one by one onto a forming drum having an outer circumferential length obtained by multiplying .pi. inches by an integral number so that the side edges of the belt-shaped members are arranged in parallel with the axis of the forming drum. The adjacent side edges of the belt-shaped members in circumferential directions of the forming drum are forced closer together to butt-join the faces of the side edges with each other. In case that the forming drum is a polygonal cylindrical forming drum whose one side of the polygon has a length obtained by multiplying .pi. inches by an integral number, the belt-shaped members are more easily attached to the forming drum.
Azuma Toshio
Minakawa Masataka
Bridgestone Corporation
Swabey Ogilvy Renault
LandOfFree
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