Vented Screw and Barrel

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Used when volatiles must be removed in order to make satisfactory product. Vented screw is essentially two screw on the same shaft. The first works as a conventional screw by feeding, melting & conveying the polymer forward. The second screw does the same, except it is melt-fed by the first screw. The first screw operates with no head pressure, while the second has to overcome any head pressure from the die and other downstream component. Vent given on the barrel at second screw remove gases generated during melting process of polymer & gives satisfactory product.

APPLICATION

Plastic recycling industries, pipe industries and sheet making industries.

RANGE - Dia 65mm to 250mm up to 5000mm length

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