PLASTIC DATE INDICATOR, MOLD FOR DATE INDICATOR, AND PLASTIC DATE INDICATOR MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To display a date with high precision and without air bubbles remaining on teeth.;SOLUTION: The plastic date indicator 1 integrally includes its body 5 which has a central hole 2 and is formed in a ring-plate shape; teeth 4 which are arranged circumferentially, on the inner circumferential edge of the central hole 2 of the body 5 at regular spacings and extend radially inward; a date display section 3, which is provided on the front side of the body 5 and on which figures indicating dates are displayed; and a plurality of gate traces 7 which are provided on the back side of the body 5 spaced in circumferential manner. Any two gate traces 7 which are adjacent to each other circumferentially are arranged in a circumferential manner, so as to have an equal angle, with the tooth bottom part 6 of the teeth 4 as a standard.;COPYRIGHT: (C)2010,JPO&INPIT