| 摘要 |
PROBLEM TO BE SOLVED: To prevent a sink mark from being generated on a highly accurate transfer face and to transfer a highly accurate transfer face by generating the sink mark on a non-transfer face of a molded article by a simple constitution. SOLUTION: A gas communication path 8 with a micro-opening for feeding a gas with a lower pressure than a feeding pressure of a resin is provided on the whole face of a cavity forming face 7 for forming the non-transfer face being a molding face requiring no accuracy on the back side of the transfer face 2 requiring a transfer accuracy of a mold 1. After the resin is fed into a cavity 4 of the mold 1 from a gate 6, a low pressure gas is fed from the gas communication path 8, and when the pressure of the resin becomes lower than the pressure of the low pressure gas fed from the gas communication path 8, adhesive properties of the resin to the cavity forming face 7 is released by the fed low pressure gas to forcibly generate the sink mark thereon. COPYRIGHT: (C)2004,JPO
|
