TPV Extruded Roller Hose by Daopurun Polymer‌
The TPV extruded roller hose from Daopurun Polymer exhibits excellent softness, high-temperature resistance, and cold resistance. This TPV sheath retains the advantages of TPV rubber solid-wall tubes, offering superior vibration damping and sound insulation. According to customer feedback, this TPV sheath reduces noise levels (in decibels) compared to conventional solid-wall tubes, thereby improving the driving experience. The TPV rubber hose is cold-resistant, anti-slip, and resistant to cracking or stickiness.

‌Conventional TPV Material Formulation‌
Standard TPV materials incorporate anti-aging agents and light-resistant additives during extrusion to enhance the tubing's resistance to UV light, ozone, and high temperatures. However, in recent years, the cost of TPV materials has risen significantly, along with the price of auxiliary additives, leading to increased prices for TPV extruded hoses.

In contrast, ordinary rubber hoses used outdoors are prone to cracking and aging, especially in northern winters where rubber tends to harden. Pre-vulcanized TPV materials can mitigate these issues, though natural rubber tubes may offer higher strength, mature processing techniques, and reasonable pricing.

‌Structural Enhancements for TPV Hoses‌
In applications where TPV hoses must withstand negative pressure, insufficient strength may cause indentations or other quality defects. Manufacturers address this by increasing wall thickness, adding reinforcement ribs, or modifying the hose structure.

‌Market Comparison of Sheath Materials‌

• PVC sheaths: Low-cost
• EPDM rubber strips: Mid-range pricing
• Silicone sheaths: Higher pricing

‌Diverse Processing Methods for TPV‌
While extrusion is commonly associated with sheath production, TPV materials can also be processed via ‌injection molding‌, ‌blow molding‌, or other cost-effective methods. TPV-based tubing combines rubber-like elasticity with plastic-like properties, surpassing conventional thermoset rubber in processability, lightweight design, recyclability, and weather resistance.

‌Growth of TPV in China‌
Thermoplastic elastomer (TPV) extruded sheaths have gained rapid adoption in China, largely replacing traditional rubber. The hybrid hard/soft segment structure of TPV enables it to cover many synthetic rubber applications, displacing materials like styrene, polyurethane, and polyester.

‌Key Advantages of TPV‌

• ‌Reprocessability‌ (similar to PP thermoplastics)
• ‌Elastic recovery‌ (rubber-like properties)
• ‌Recyclability‌ and ‌design flexibility‌

‌Quality Inspection of TPV Roller Hoses‌

• Surface smoothness: Check for impurities, bubbles, or sawtooth marks.
• Tactile quality: Should feel细腻 (fine) and柔软 (soft).
• Avoid high-filler PVC or elastomers, which may exhibit poor rebound, rough surfaces, or excessive compression deformation.

‌Key Terminology‌

• ‌TPV‌: Thermoplastic Vulcanizate
• ‌EPDM‌: Ethylene Propylene Diene Monomer
• ‌PVC‌: Polyvinyl Chloride