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Strength Through Stretch: The PET Line Engineered for Performance
Engineered Stretching Technology
Our PET production line is engineered around the core principle of high-tension, high-precision stretching. Every component—from the reinforced frame foundation to precision-balanced stretch rollers, high-torque servo drive systems, and wear-resistant surface treatments—is designed to withstand continuous high-load operations. This engineering ensures deformation-free, vibration-free performance that reliably produces high-quality PET products.
Key Specifications
Structural Engineering: High-rigidity box-beam frame optimized through finite element analysis to prevent deformation under long-term high-tension loads
Core Components: Alloy steel stretch rollers with quenching, tempering, grinding, and hard chrome plating for surface hardness above HRC 60
Thermal Management: Internal hot oil circulation system maintaining roller surface temperature uniformity within ±1°C
Technical Parameters
Parameter Category
Parameter Item
Specification / Description
Mechanical Structure
Frame Design
Heavy-Duty Box Beam, FEA Optimized
Mechanical Structure
Main Material
Q235B / Q345B Structural Steel
Stretch Rollers
Roller Material
42CrMo Alloy Steel
Stretch Rollers
Surface Treatment
Hard Chrome Plated, Hardness ≥ HRC 62
Stretch Rollers
Dynamic Balance Grade
G2.5 or Higher
Stretch Rollers
Roller Surface Temperature Uniformity
±1.0 °C (heated rolls)
Drive System
Main Stretch Roller Drive
Servo Motor + Precision Planetary Reducer
Drive System
Bearing Precision
P5 Grade or Above High-Precision Bearings
Design Metrics
Max Designed Line Tension
Up to 5000N+ (Depending on line speed & product spec)
Design Metrics
Design Life
Key structural components > 15 years
Frequently Asked Questions
What is the practical value for customers of the heavy mechanical structure and high-precision components?
The value manifests in long-term stability, low maintenance costs, and superior product quality. A robust structure resists vibration and prevents process parameter drift caused by micro-deformation. High-precision rollers and bearings ensure smooth operation, reduce wear, extend equipment overhaul intervals, and directly contribute to product thickness uniformity and surface quality. This represents an investment focused on total cost of ownership over the equipment lifecycle.
What are the advantages of using servo motors to drive stretch rollers compared to ordinary motors with VFDs?
Servo motors offer significant advantages in stretching applications: High Control Precision enables extremely accurate speed and position control, ensuring absolute accuracy of draw ratios. Extremely Fast Response provides millisecond-level reaction to tension changes, complementing closed-loop tension control systems. Strong Overload Capacity withstands short-term overloads several times the rated value, handling instantaneous production shocks. High Efficiency and Low Heat Generation ensure top-tier performance and reliability throughout the stretching process.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2012
Total Annual:
5000000-8000000
Employee Number:
50~60
Ecer Certification:
Verified Supplier
Jiaxing Chuanqi Machinery Equipment Co., Ltd. is a high-tech enterprise that specializied in the research and develop and manufacture of Paper strap production line, PP box strap production line and all kinds of automatic winder and PP PET strapping.
Vision: Committed to becoming t... Jiaxing Chuanqi Machinery Equipment Co., Ltd. is a high-tech enterprise that specializied in the research and develop and manufacture of Paper strap production line, PP box strap production line and all kinds of automatic winder and PP PET strapping.
Vision: Committed to becoming t...