| 摘要 |
<p>Disclosed herein is a mold device for forming a product using molten molding material. In the present invention, parting surfaces (54) and (64) of the first and second molds (50) and (60) are brought into contact with each other and, thereafter, molten molding material is injected into cavities (52) and (62). At this time, carbonized gas is continuously discharged along the parting surfaces through a continuous gas discharge circuit in a short time, without stagnating in the cavities. Preferably, the gas discharge circuit comprises a ventilation passage (70) which is formed on a first side of the parting surface (64) of the second mold (60), a gas guide groove (72) which is formed in a second side of the parting surface (64) and is parallel to the ventilation passage (70), and a plurality of gas discharge grooves (74) which are formed in the second side of the parting surface (64) and perpendicularly communicate with the gas guide groove (72).</p> |
