MULTILAYER CORE MOLDING METHOD
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United States of America Patent
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Jun 10, 2021
app pub date -
Nov 2, 2020
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Dec 5, 2019
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Abstract
A multilayer core molding method includes an upstream process of molding using an upstream process molding apparatus, which includes a first upstream process mold including a first upstream process mold cavity surface, and a second upstream process mold including a second upstream process mold cavity surface. The upstream process includes an inner core arrangement step and a covering step to obtain an intermediate molded body, which includes the inner core, and the unvulcanized or semi-vulcanized first outer core material covering only part of a surface of the inner core and integrated with the inner core.
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