PVC core tube - Industrial-grade rigid wiring core tube

Jiangsu Hongkai Plastic Technology Co., Ltd. is a leading manufacturer of PVC core tubes in China, acting as a primary supplier of high-precision, corrosion-resistant Plastic winding core components for film and tape manufacturers. Its products cover applications involving substrates such as BOPP and PET.

PVC Core Tube utilize polyvinyl chloride (PVC) as their core material, whose molecular chains are formed through the polymerization of vinyl chloride monomers. With a chlorine content as high as 57%, this composition confers exceptional chemical stability upon the material. Throughout the entire film production process, rigid PVC core tubes achieve comprehensive coverage due to their unique properties: During slurry transportation, their ultra-smooth inner walls reduce fluid resistance by over 30%, supporting flow rates from 5 to 50 m³/h to accommodate production lines of varying scales. After implementation at one enterprise, production line debugging cycles were shortened from 15 days to 7 days, with per-kilometer costs reduced by 180,000 yuan. In solvent recovery systems, molecular-level sealing design maintains leakage rates below 0.001 L/(m·h), with zero solvent permeation after three years of continuous operation. Combined with antistatic surface resistance ≤1×10⁹Ω and UL94 V-0 flame retardant certification, it effectively reduces fire risks and cuts maintenance costs by 70%. When used as film winding cores, bending strength of 69-110 MPa supports deformation-free high-speed winding at 500 m/min. Excellent wear resistance with static/dynamic friction coefficients of 0.4-0.5 and 0.23 significantly reduces film surface scratches; In sub-zero applications, it maintains 92% of its bending strength after -45°C low-temperature impact testing, with a circumferential stress decay rate <2%—five times better than conventional materials. After 18 months of continuous operation, stress decay remains <2%, ensuring long-term stable performance in extreme -40°C environments.