Slurry for forming interlayer for collapsible core, method of production of collapsible core using same and collapsible core produced thereby.

摘要

An collapsible core (1) is formed in such a manner that a sand core (1a) is dipped into an acidic suspension having a pH of 5.2 to 6.8 to form an interlayer (2), that the interlayer (2) is coated with an outer layer (3) and that both layers (2, 3) are heat-cured simultaneously.