| 摘要 |
The invention relates to equipment (3) for drawing a film made of synthetic material, which includes longitudinal drawing means (11) and transverse drawing means (15) comprising a drawing enclosure (16), an air outlet opening (17) leading into the enclosure and an air inlet opening (18) leading into the enclosure. The transverse drawing means further comprise an air recirculation circuit (19) connecting the air inlet and outlet openings (18, 17) and designed to redirect the air from the air outlet opening towards the air inlet opening. The air recirculation circuit (19) comprises a cyclone separation device (21) including a body (22) defining a separation chamber (23), an inlet port (24) leading into the separation chamber and connected to the air outlet opening (17) of the enclosure so as to enable an air/additives mixture to be introduced into the separation chamber, an air outlet port (25) leading into the separation chamber and connected to the air inlet opening (18) of the enclosure, and an additive outlet port (26) leading into the separation chamber. |
| 主权项 |
1. Equipment for drawing a film in synthetic material, comprising:
a first fluid circulation circuit in which a heat transfer fluid circulates,
transverse drawing means configured to transversely draw the film, the transverse drawing means including a drawing enclosure in which the film is intended to be drawn, an air outlet aperture opening into the enclosure and an air inlet aperture opening into the enclosure, wherein the transverse drawing means further include an air recirculation circuit connecting the air inlet and outlet apertures and laid out so as to redirect the air from the air outlet aperture to the air inlet aperture, and wherein the air recirculation circuit includes a cyclone separation device comprising a body delimiting a separation chamber, an inlet orifice opening into the separation chamber and connected to the air outlet aperture of the enclosure so as to allow introduction of an air-additives mixture into the separation chamber, an air outlet orifice opening into the separation chamber and connected to the air inlet aperture of the enclosure, and an additive outlet orifice opening into the separation chamber, wherein the body of the cyclone separation device comprises a heat transfer fluid inlet and a heat transfer fluid outlet connected to the first fluid circulation circuit, and wherein the cyclone separation device comprises a cooling pipe positioned in the body of the cyclone separation device and including a first end connected to the heat transfer fluid inlet and a second end connected to the heat transfer fluid outlet. |
