Blow molding and bag-making machines are the core equipment in plastic packaging production lines, with the roller shafts responsible for functions such as film traction, guidance, flattening, and winding. Traditional metal roller shafts suffer from issues like heavy weight, high inertia, and susceptibility to corrosion, which limit the equipment's speed increase and long-term stable operation.Carbon Fiber Roll ShaftDue to its lightweight, high strength, low inertia, and corrosion resistance, it is gradually replacing metal rollers and is widely used in high-end packaging machinery. 。

Core Advantages of Carbon Fiber Shafts

Significant weight reductionDensity is approximately:1.6 g/cm³, just 1/5 of steel and 2/3 of aluminum, effectively reducing equipment load.

High strength and high rigidityTensile strength up to3500–4900 MPa, tensile modulus exceeds 230 GPa, far surpassing common steel, with strong load-bearing capacity and resistance to deformation.

Low inertia, fast responseLightweight quality reduces rotational inertia, allowing for faster start-ups and stoppages, ideal for high-speed operation and increased production pace. 。

Superior dynamic balance performanceRollers are even, reducing vibration, protecting bearings, and extending the overall machine's lifespan. 。

Corrosion-resistant, maintenance-freeNon-metallic material, resistant to acids, alkalis, salt mist, and other chemical mediums. Suitable for humid or corrosive environments, requiring minimal maintenance for long-term use. 。

Good thermal stabilityExtremely low coefficient of thermal expansion (about)0.2×10⁻⁶/°C), maintaining dimensional stability within the -50°C to 150°C temperature range, thus avoiding thermal deformation that could affect film tension control.