| 摘要 |
PROBLEM TO BE SOLVED: To provide a foam molding device which is a molding die formed of an upper die and a lower die, the upper die has a vent hole for air release communicated to inside of the molding die, and which discharges air properly from inside of the molding die, according to foam and expansion of a foam raw material, and to provide an immersion prevention method of foam agent to a vent hole and a film for immersion prevention thereof.SOLUTION: A vent hole formed on a molding die is hidden with a film which is microporous, has heat tolerance, and is stuck to an inner face of the molding die 2, and only foam gas is made pass through the vent hole 21. The film 1 is formed into a contour shape which is protruded to the surrounding of a hiding part 11 for hiding a vent hole port 22. A protruding part 12 in the surrounding of the hiding part 11 contacts the molding die 2. |
