Abstract:
PROBLEM TO BE SOLVED: To solve a problem that pottery clay is not separated from a molding die other than gypsum because the pottery clay adheres to the molding die, thereby the molding die of a material other than gypsum cannot be used.SOLUTION: Liquid silicone for release or oil for release is used for a molding die for pottery molding as a mold release agent. When pottery clay is subjected to press molding, if a mold release agent (liquid silicone for release or oil for release) is sprayed or applied to a molding die every time, pottery clay can be easily removed from the molding die of a silicone resin mold, a metal mold, a wooden mold, or the like, other than gypsum. In pottery molding in which only a gypsum mold is used conventionally, a reverse gradient shape can be molded by one-time molding using a soft silicone resin molding-die, and also release of a molding from the molding die can be performed for various materials.
Abstract:
PROBLEM TO BE SOLVED: To provide a mold release agent for a tire inner surface providing sufficient air permeability and durability to a bladder, and further having little omission of a mold release agent component powder from a tire inner surface after molding.SOLUTION: A mold release agent for a tire inner surface contains an inorganic component made by powder, polyether-modified silicone, a surfactant and water, and 25 wt.% or more of the inorganic component is synthetic amorphous silica. The tire is a tire which is obtained by attaching the mold release agent for a tire inner surface to a raw tire and vulcanized.