Mold and method of making same

Details Mold and method of making same Mold and method of making same

B - Operations, Transporting

28

B

B28B 7/34 (2006.01) B31B 1/30 (2006.01) B31B 1/62 (2006.01) E04G 13/02 (2006.01)

Patent

CA 2108336

-13- Abstract The invention relates to a mold comprising a tubular molding element (1) with flat walls which define a prism having a polygonal cross section corresponding to that of the molded end product, and reinforcing elements (4a-4d) which cover the outer surfaces of said tubular molding element. The mold is characterized in that said reinforcing elements (4a-4d) are kept secured to the tubular element by a helical encasement wound with at least one band (8) of a material which is at least partially glued on at least one of its surfaces. The invention also relates to a method of manufacture which recommends a straight-wound encasement with a wide band or a spiral encasement wound with a narrow band, in particular by means of a winding mandrel (5).

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