Molding method and mold therefor
AssigneeKaga Sangyo Co., Ltd.
InventorsOsamu Mizoguchi, Takayuki Nomura, Hitoshi Tsujikawa, Yoshiki Ikeda
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Abstract
Molding methods and molds for making a synthetic resin molded product include disposing a curable liquid resin mixture in a recess of a female mold. The curable liquid resin mixture is then simultaneously agitated and degassed by a mixer while under a partial vacuum. More specifically, at least the female mold is orbited around an orbital axis while being rotated about a rotational axis that is eccentric to the orbital axis. After being thoroughly mixed and degassed, the liquid mixture is then cured in the mold unit.
Claims18
A method of manufacturing a synthetic resin molded product using a mold unit having a female mold and a male mold, which are closely engageable with each other in a selective manner to define a cavity therebetween, and also are disengagable from each other, the method comprising:
- filling the female mold with a liquid mixture comprising at least one curable synthetic resin;
- using a mixer to simultaneously agitate and degas the liquid mixture disposed within the female mold while under a partial vacuum by orbiting at least the female mold around an orbital axis while simultaneously rotating at least the female mold about a rotational axis that is eccentric to the orbital axis;
- and
- subsequently curing the agitated/degassed liquid mixture in the mold unit.
A method comprising:
- (i) disposing at least one curable organic liquid and at least one curing agent in a recess of a female mold, the at least one curable organic liquid and the least one curing agent constituting, at least in part, a curable liquid resin mixture, (ii) prior to closely engaging the female mold with a corresponding male mold so as to define a mold cavity therebetween, simultaneously mixing and degassing the curable liquid resin mixture in the female mold by orbiting the female mold about an orbital axis while simultaneously rotating the female mold about a rotational axis that is eccentric to the orbital axis, (iii) closely engaging the male mold with the female mold, thereby defining the mold cavity therebetween and such that the mixed/degassed curable liquid resin mixture fills, and is constrained by, the mold cavity, and (iv) curing the curable liquid resin mixture in the mold cavity, thereby forming a molded resin product, wherein step (ii) further comprises applying a partial vacuum to the curable liquid resin mixture during the simultaneous mixing and degassing thereof.
Dependencies are inferred from the claim text.