Chill Roll

Description of Chill Roll
The chill roll adopts special temperature equalization technology such as internal water circulation, which can quickly transfer the heat absorbed by the working area to both ends, maintaining a highly uniform temperature on the chill roll surface, the temperature difference can be controlled within ±1℃. This design not only increases the temperature difference between the hot material and the roller surface, but also avoids local supercooling causing condensation (operating above the dew point temperature).

In biaxially oriented polyfilm production line (BOPP, BOPET etc.), the chill roll through rapid solidification molten polymers, directly affect the crystallinity of films and the surface roughness.

Chill Roll Specifications
(1). Coaxially / Cylindricity ≤0.01mm
(2). Straightness ≤0.01mm
(3). Chromium plating layer thickness ≥120μm
(4). Chromium plating surface hardness HRC ≥62
(5). Double-shell Duo-flow channel construction available as per customer request
(6). Chill roll surface temperature difference within ±0.5℃
(7). Chill roll surface roughness Ra≤0.005μm

Chill Roll Advantages
(1). Reduce defective rate: Significantly improve films quality by avoiding condensation, and preventing defects such as bubbles or scratches on the film surface.
(2). Material of chill roll: Stainless steel, low-carbon steel, medium carbon steel, alloy steel, etc. can be selected according to customers' requirements.
(3). Chill roll construction: chill roll can be processed and produced according to customers' drawing requirements, or designed by Huatao based on usage requirements.
(4). Chill roll processing and manufacturing range: Maximum diameter 3000mm, maximum length 12000mm.