| 摘要 |
This vacuum system assists in the preparation of plastic models. Its construction is universal and ensures an even vacuum treatment of the entire internal volume of the box. The system consists of at least four collectors and four interim /2/ pipes. The collector pipes have a diameter larger than that of the interim pipes, and the distance between them is regulable. Each collector pipe is connected to two interim pipes by hermetic sealing rings of porous rubber (3), statically attached - internally - to the two end pieces of each collector pipe, and closed - externally - with sheaves /4/. All collector and interim pipes are perforated beyond the zone of their junction.
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