ES307641A1 - Manufacturing procedure, by vulcanization in mold, of bicolors bath caps. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Manufacturing process, by vulcanization in mold, of two-color swimming caps, of the type comprising, forming a single body, a laminar base cap and protruding ornaments thereof, using normal molds constituted by a core provided in its surface of cavities and grooves corresponding to the outstanding ornaments that are desired to present the finished cap, as well as a bipartite outer box or mold, provided with a recess corresponding to said core, with free space between both to be filled by the rubber mixture to molding, characterized in that the aforementioned mold is loaded with the raw rubber mixture that is desired to constitute the protruding embellishments in the finished cap, subjecting the outer mold or box to heat and pressure and keeping the core cold, so that the gum introduced during this process in the cavities and grooves of said core remains unvulcanized; the mold is then opened and the layer of vulcanized coating rubber is stripped from its core so that the raw fillings of the cavities and grooves of the core itself remain retained therein; the mold is reloaded with a rubber mixture of different color or shade and the assembly is subjected to heat and pressure in the normal vulcanization process, so that these fillings of the cavities and grooves of the core are intimately united, forming a single body, with the rubber coating layer of the core formed in this second vulcanization process; and, finally, the two-colored cap obtained is demold and the core is cooled by any appropriate means to reuse it afterwards in another cycle of operations. (Machine-translation by Google Translate, not legally binding)