Three Roll Calender
High Precision · High Efficiency · Strong Stability
I. Product Description
The three-roll calender is a plastic or rubber product processing equipment that applies pressure between two top rolls and one bottom roll to precisely control the final product's thickness and width through calendering. This equipment offers high processing efficiency and precision, making it a key piece of equipment in plastic and rubber product manufacturing.
Working Principle: The three-roll calender drives the upper, middle, and lower rolls to rotate simultaneously via a transmission device. The material is squeezed and stretched in the gap between the rolls, forming sheets or films of the required thickness and width. By adjusting the roll gap, temperature, and speed, the product's dimensions and properties can be precisely controlled.
Main Components:
Upper Roll, Middle Roll, Lower Roll: Core working components, typically made of high-strength alloy steel, with surfaces precision ground and chrome-plated.
Transmission Device: Includes motor, reducer, gearbox, etc., providing stable power.
Lubrication System: Ensures lubrication and heat dissipation during normal operation.
Temperature Control System: Precisely controls roll temperature to suit different material processing needs.
Adjustment Device: Used for precise adjustment of the roll gap.
Electrical Control System: PLC control for automated operation.
II. Equipment Advantages (Core Selling Points)
High Precision Control: Utilizes precision adjustment devices and advanced control systems, product thickness tolerance can be controlled within ±0.01mm.
High Production Efficiency: The three-roll design optimizes material flow path, improving production speed and efficiency.
Strong Stability: Robust frame structure and precision manufacturing ensure long-term stable operation.
High Adaptability: Can process various plastic and rubber materials, including PVC, PE, PP, EPDM, etc.
Easy Operation: User-friendly human-machine interface and automated control system reduce operational difficulty.
Energy Saving and Environmental Protection: Optimized transmission design and temperature control system reduce energy consumption.
Turnkey Service: We provide a full set of turnkey engineering services from equipment design, manufacturing, installation, commissioning to personnel training, ensuring customers can quickly start production and achieve expected results. Includes process formula optimization, production line layout design, operator training, and comprehensive support.
III. Technical Parameter Table
IV. Formula Table
| Raw Material Name | PVC Film Formula (phr) | Rubber Sheet Formula (phr) | Waterproof Membrane Formula (phr) |
| PVC Resin (SG-5) | 100 | - | - |
| Natural Rubber (NR) | - | 70 | 50 |
| Styrene-Butadiene Rubber (SBR) | - | 30 | 30 |
| EPDM Rubber | - | - | 20 |
| Plasticizer (DOP) | 45 | - | 15 |
| Stabilizer | 3.5 | - | - |
| Calcium Carbonate | 20 | 30 | 40 |
| Carbon Black | - | 45 | 35 |
| Titanium Dioxide | 4 | - | - |
| Zinc Oxide | - | 5 | 4 |
| Stearic Acid | 0.5 | 2 | 1.5 |
| Anti-aging Agent | - | 2.5 | 2.5 |
| Accelerator | - | 1.2 | 1 |
| Sulfur | - | 2 | 1.8 |
V. Equipment List
| No. | Equipment Name | Specification Model | Quantity | Remarks |
| 1 | Main Motor | Configured according to model | 1 unit | Variable frequency speed control, IE3 efficiency |
| 2 | Reducer | Hardened gear reduction | 1 unit | Transmission efficiency ≥96% |
| 3 | Upper, Middle, Lower Rolls | Alloy steel forging | 3 pieces | Surface hard chrome plated, mirror polished |
| 4 | Roll Bearings | Double row roller bearings | 6 sets | High load capacity, long life |
| 5 | Lubrication System | Centralized lubrication | 1 set | Automatic timed quantitative lubrication |
| 6 | Temperature Control System | PID intelligent control | 1 set | Segmented control, accuracy ±1℃ |
| 7 | Adjustment Device | Electric/Hydraulic adjustment | 1 set | Digital display, accuracy 0.01mm |
| 8 | Electrical Control System | PLC+Touch Screen | 1 set | Siemens/Mitsubishi brand, networkable |
| 9 | Frame | Steel plate welding | 1 set | Stress relief treated, high strength |
| 10 | Safety Protection Device | Complies with CE standard | 1 set | Emergency stop button, safety interlock |
| 11 | Auxiliary System | Optional | 1 set | Includes stripping, cooling, winding, etc. |
VI. Process Flow Chart
Three Roll Calender Process Flow
Raw Material Preparation → Batching Mixing → Plasticating Internal Mixing → Feeding Conveying → Three Roll Calendering → Stripping Shaping → Cooling Setting → Traction → Winding → Inspection → Packaging Storage
Note: The actual flow chart should include more detailed equipment connections and process parameters.
VII. Application Fields
Plastic Products: PVC films, sheets, artificial leather, floor coverings, etc.
Rubber Products: Rubber plates, rubber sheets, conveyor belt cover rubber, etc.
Building Materials: Waterproof membranes, decorative materials, sound insulation materials, etc.
Packaging Materials: Packaging films, composite packaging materials, etc.
Other Fields: Automotive interiors, medical product substrates, etc.
VIII. About Us
Headquarters: Shandong, China, founded in 2014.
Scale: 3 branch factories, 2 major industrial parks, 100+ employees, 10+ years of professional experience.
Market Distribution:Domestic: 35%,North America: 9%,South Asia/South America/Eastern Europe/Middle East: 7%~5% each.
Service Commitment:
Quality first, turnkey project, full-process technical support, supports OEM customization, permanent online video technical support, 24-hour after-sales response, fast spare parts supply.
