Sprial Flow System Casting Roller Matt Surace 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. Typically, 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. Such precision temperature control is essential for preventing material degradation and ensuring consistent lamination results across high-speed production lines.
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Characteristics of Casting Roller for Casting Film:
| 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 not only requires adjusting the process on raw materials, but also mastering the processing conditions, among which temperature has a greater impact on film performance. The suitable production temperature is 230~250℃. The air knife on the Cooling Roller must be adjusted appropriately to keep the film cooled evenly and to avoid unstable thickness or failure to adhere to the roller, which may cause wrinkles or affect the appearance quality. In addition,the key points of the cast film production process include the design of the T-shaped machine head, the surface finishing of the cooling roller, and the monitoring of the film thickness through beta-ray or infrared thickness gauges to achieve satisfactory thickness requirements.
Material: Select high-quality 45# steel pipe, alloy steel pipe, precision steel pipe, etc.
Structure: Various structural designs such as inner tank spiral flow channel and jacket type
Processing: Advanced heat treatment process, quenching and tempering, after turning, assembly and other processing, the red sleeve is hot-fitted and welded to remove the application.
Strength, quenching, fine turning, fine grinding and plating, hard chrome, super fine grinding, precision grinding using American 3M abrasives Polished or sanded to matte finish.
Parameters of Casting Roller for Casting Film:
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, the roller surface hardness is HRC55~58. After hard chromium plating, the heat treatment is HRC65 or above.
Application of Casting Roller for Film Precoating Lamination:
BOPP/BOPET film Laminating with LDPE,PP,EVA,EAA,LLDPE,EMA,EMAA
About us
Huatao Group was founded in 2008. We are a professional and leading supplier of various rollers for paper, corrugated board, rubber & plastic industry ,nonwoven fabric industries over 15 years of experience.
Paper Industry: forming roller, vacuum couch roller, dandy roller ,Breast Roller, press roller,stone roller, rubber roller,dryer cylinder ,size press roller, calender roller, pope reel roller ,spreader roller ,embossing roller.
Plastic & Rubber: chill roller, MDO Preheating Roller, MDO nip roller, MDO stretching Roller, cooling roller, corona treater roller, Corona treatment nip roller, flame roller, carbon fiber contact roller, carbon fiber tension roller, carbon fiber nip roller, winding core , coating drum, cooling drum, spreader roller, anilox roller,calender roller, embossing roller .
Nonwoven Fabric :cylinder roller, doffer roller ,carbon fiber guide roller , embossing roller, cooling roller ,spreader roller
With a strong commitment to innovation, reliability, and customer satisfaction, Huatao Group has become a trusted provider in the industry and our products have been exported to more than 96 countries and have a good reputation.
Huatao understands that each customer may have different requirements, which cannot meet from one factory, but we can meet, we are also familiar with domestic factory advantages with matching superior quality and help customer not walk bend road. We pursue:each customer is buying and using HUATAO products with a rest assured heart and service is never end.
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