Spiral Flow System Casting Roller Matt Surface CPP CPE
Introduction of Casting Roller
The casting roller serves as the primary cooling component within the lamination system, employed to bond materials like LDPE, PP, EVA, EAA, LLDPE, EMA, and EMAA onto BOPP or BOPET films. This casting roller utilizes a jacketed spiral cooling water heat exchange configuration, enabling precise control of the roller surface temperature within a ±1°C range.
This design ensures uniform heat dissipation during the lamination process, critical for maintaining material adhesion and film quality. The spiral cooling structure enhances thermal conductivity by promoting turbulent water flow, which efficiently removes heat generated during the extrusion and bonding of thermoplastic layers.
Characteristics of Casting Roller for Casting Film
| Parameter |
Specification |
| Roller diameter |
within Φ1600mm |
| Cylindricity and coaxiality |
≤0.005mm |
| Thickness of the coating |
50~80um |
| Roller surface temperature error |
±0.5~1℃ |
| Surface Treatment |
matt surface |
| Running speed |
800 meters/min |
| Overall deformation |
<0.05 mm at full load |
| Dynamic balancing |
Q=3.2 during operation |
Producing qualified cast films requires adjusting the process on raw materials and mastering the processing conditions, with temperature having significant impact on film performance. The suitable production temperature is 230~250℃.
Key Specifications
- Roughness Ra0.005 (smoothness level 14 or above)
- No vibration lines, streaks, or roughening lines
- Straightness, runout, coaxiality ≤0.005mm
- Cooling or heating temperature difference ≤±1℃
- Thermal deformation ≤0.01mm
- After quenching, roller surface hardness is HRC55~58
- After hard chromium plating, heat treatment is HRC65 or above
Application
BOPP/BOPET film laminating with LDPE, PP, EVA, EAA, LLDPE, EMA, EMAA
About Huatao Group
Founded in 2008, Huatao Group is a professional supplier of various rollers for paper, corrugated board, rubber & plastic industry, and nonwoven fabric industries with over 15 years of experience.
Our Products Include:
- Paper Industry: forming roller, vacuum couch roller, dandy roller, press roller
- Plastic & Rubber: chill roller, MDO rollers, cooling roller, corona treater roller
- Nonwoven Fabric: cylinder roller, doffer roller, carbon fiber guide roller
Our products have been exported to more than 96 countries with excellent reputation. We understand each customer's unique requirements and provide matching superior quality products with reliable service.
