| 摘要 |
[Problem to Be Solved] The present invention realizes and provides a drying hopper which, with the construction of the hopper itself being simplified, allows the absorption capacity of the dry air to be effectively utilized for improving the drying efficiency and the drying time for the resin materials to be shortened. [Solution] The drying hopper 1 pertaining to the present invention comprises a tube-shaped hopper main body 2 having a material charging port 3 at a top portion thereof and a material discharging port 4 at a bottom portion thereof; a first hopper part 5, a second hopper part 6 and a third hopper part 7 which are arranged in this order at intervals from top to bottom within this hopper main body 2, each being formed substantially in the shape of an inverted cone, and through which dry air is capable of being ventilated, and granular resin materials P are capable of being passed; first to third material dispersion elements 8 to 10 for dispersing the granular resin materials P that are each disposed under the material charging port 3, and above the top surface of the respective first to third hopper parts 5, 6, 7; a dry air supply/discharge system which forms a dry air ventilation path running from the bottom portion of the hopper main body 2 to above the first material dispersion element 8 through the third hopper part 7, the second hopper part 6, and the first hopper part 5, and leading to the outside of the hopper main body 2.
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