| 摘要 |
The invention relates to a sand-ejecting device for producing polyester tubing reinforced with glass fibre and other, which allows the improvement of the mechanical properties of said tubing, as a result of the arrangement of at least one material-discharge hopper, at least one conduit that receives the material from the hopper, and at least one driving medium that drives the material from inside the conduit to the tubing to be covered, where the application resulting from the spraying of material by means of the ejector device according to the invention optimises notably the periods of production time and reduces the related costs. |
