Patent Innovations: Highly Flexible and Torsion-Resistant Drag Chain Cable Design
A patent application (CN-120737473-A) filed by Sichuan Xinrong Electronic Cable Co., Ltd. details a method for preparing a highly flexible torsion-resistant drag chain cable with enhanced flame retardancy and mechanical strength .
Technical Innovation:
The sheath layer comprises a proprietary blend including:
35-45 parts high-density polyethylene
25-35 parts low-density polyethylene
15-20 parts ethylene-vinyl acetate copolymer
10-15 parts additives, 0.8-1.3 parts antioxidants, 0.5-1 parts lubricants, and 5-8 parts fillers .
Key Benefits:
A unique benzoxazine ring structure in the additive opens at high temperature to form a cross-linked network, constraining molecular chain slippage and enhancing torsional stability and mechanical strength .
The additive suppresses performance degradation in high-temperature environments and improves flame retardant properties .
This patent highlights the ongoing industry focus on improving material performance for drag chain cables operating under continuous torsion and high-temperature conditions.
