Kunshan Kesun Polymer Co., Ltd. is one of the most reliable manufacturers and suppliers of TPV Pellets for Tubing in China. If you're going to wholesale bulk recyclable TPV Pellets for Tubing, welcome to get quotation and free sample from our factory. All customized products are with high quality and low price.
Product Description
1. Standardized Production and High Batch Consistency for Mass and Long-Term Procurement: This EPDM/PP dynamically vulcanized TPV pellet is a dedicated modified raw material for tube extrusion. The entire production process complies strictly with standardized TDS technical specifications. The pellets feature minimal batch-to-batch deviation, uniform melt fluidity, and consistent internal cross-linking structure. It eliminates raw material performance fluctuation risks, supports stable mass production and continuous extrusion processing, and avoids production abnormalities caused by inconsistent raw material batches.
2. Stable Temperature Resistance, Resilience and Medium Resistance to Reduce Defect Rates at the Source: This TPV pellet delivers a service temperature range of -40℃ to 105℃ with an elastic recovery rate of ≥92%. Its stable cross-linking structure lowers performance attenuation under UV and ozone exposure. The pellet maintains low swelling rate and controllable mechanical property attenuation when exposed to hydraulic oil, lubricants, emulsions and mild chemical media. Stable raw material performance reduces terminal product failures such as cracking, leakage and aging deterioration.
3. Qualified Mechanical Properties and Fatigue Resistance for High-Frequency Working Conditions: This TPV pellet provides traceable and standardized mechanical indicators: tensile strength ≥8.8MPa, elongation at break ≥400%, and compression set ≤22%. The pellet itself maintains stable toughness and deformation resistance. Products extruded from this raw material retain steady elasticity and sealing performance after 100,000-cycle bending tests, meeting raw material standards for tubes applied in high-frequency dynamic operating equipment and supporting mid-to-high-end order production.
4. Wide Processing Compatibility and Sufficient Performance Margin for Multi-Specification Tube Production: Complying with ISO and ASTM industrial tube raw material standards, this TPV pellet supports stable extrusion of 3mm–16mm tubes with high finished product yield and low processing loss. Products made from this pellet achieve a stable working pressure of 8–10.4bar with a 3:1 safety factor. The sufficient performance margin adapts to mass production of various pneumatic and fluid transmission tubes, covering diversified processing demands.
Product Parameters
| Typical Properties | Test Method | Unit | Typical Values |
| Form | - | - | Pellet |
| Color | - | - | Black |
| Hardness (5s) | GB/T 531.1 | Shore D | 45 |
| Specific Gravity | GB/T 533 | g/cm³ | 0.957 |
| Tensile Strength | GB/T 528 | MPa | 18.33 |
| 100% Modulus | GB/T 528 | MPa | 8.99 |
| Tear Strength | GB/T 529 | N/mm | 75.42 |
| Elongation at Break | GB/T 528 | % | 627 |
| Air Oven Aging (100℃ × 168h) | - | - | - |
| Hardness Change | GB/T 3512 | D | 1 |
| Tensile Strength Change | GB/T 3512 | % | -5.6 |
| Elongation Change | GB/T 3512 | % | -6.4 |
| Burning Rate | GB 8410 | mm/min | 27 |
| Low Temperature Resistance | GB/T 15256 | ℃ | -58 |
Quality Control
We implement full-process quality inspection complying with ASTM and GB/T standards. The MFR batch deviation of raw pellets is strictly controlled within ±3%; impurity particle size ≤0.02mm with uniform cross-linking structure, and all mechanical properties are fully inspected. Dimensional tolerance of extruded tubes can be stabilized within ±0.1mm to ensure consistent melt fluidity, appearance and performance across batches. All quality indicators are measurable and traceable.
Free sample testing and pre-production verification are available. We can perform 100,000-cycle bending fatigue test, 70℃×22h oil immersion test, and -40℃~105℃ high-low temperature aging test. We follow the principle of no commercial order before successful trial run. Each shipment comes with a tested TDS report. The indicators include tensile strength ≥8.8MPa, elongation at break ≥400%, compression set ≤22%. All parameters are obtained from laboratory physical tests.
With large-scale production lines, we accept bulk orders and customized modification. Standard grades are normally kept in stock for quick shipment; customized grades will be arranged for production only after sample confirmation.
Supported by stable upstream raw materials and mature production scheduling, we conduct batch-by-batch tests on material properties, color and processability. Our professional technical team provides continuous process guidance and after-sales support to guarantee stable quality and reliable long-term supply.
After-sales Service
Sample Testing & Formula Adaptation Service
We provide free sample delivery, extrusion trial testing and full performance verification based on customers' extrusion equipment, tube specifications and working conditions. Full tests including bending fatigue, oil resistance, high & low temperature resistance and weather aging are available. We adjust formulas according to trial results to achieve optimal processing and performance matching. We strictly adhere to the principle of no successful trial, no transaction. If the material fails to meet your production process or performance requirements, we optimize the formula free of charge until fully qualified, effectively avoiding mass production risks.
Full-Scale Production Technical Support
During mass production, our professional technical engineers provide one-on-one follow-up service. We offer targeted solutions for common extrusion problems such as unstable discharging, uneven wall thickness, poor surface finish and insufficient kink resistance. We optimize temperature parameters, traction speed and equipment matching to stabilize material processability and improve finished tube yield. Continuous batch monitoring guarantees stable, efficient and non-stop production for customers.
24h Rapid Response & Long-Term Process Support
We implement a 24-hour rapid response mechanism for production anomalies, batch consistency issues and material application problems. Strict batch control stabilizes color, physical properties and processability. We provide long-term process optimization suggestions and material upgrading solutions. With years of practical testing data accumulation, we continuously support customers' product iteration to ensure stable mass production and reliable long-term supply.
FAQ
Q: Is it compatible with conventional single-screw extruders? Does screw or die modification required for processing?
A: Compatible. No screw or die modification is needed; direct on-machine production is available.
Q: What is the extrusion productivity? What is the applicable line speed range?
A: Supports high-speed continuous and stable extrusion. Recommended stable line speed: 15–40 m/min (higher line speed for smaller pipe diameters). Actual production line speed can be adjusted according to pipe wall thickness and die runner design.
Q: What is the shelf life and moisture-proof requirement during processing?
A: 24-month shelf life when stored in original sealed dry packaging. Material extrusion performance remains largely unchanged under slightly humid environments complying with warehousing specifications. If obvious moisture absorption occurs, pre-dry at 100°C for 2 hours to restore original processing performance.
Q: Are product specifications standardized? Is custom formulation available?
A: Yes. Standard hardness grades cover Shore A50 to D80 in 5 ranges. Custom formulation adjustments such as oil resistance and low-temperature resistance are available.
Q: What is the MOQ, sample policy and technical service terms?
A: MOQ for standard pipe-grade TPV pellets is 500 kg for bulk orders. For first-time trial production orders, the minimum quantity can be reduced to 100 kg. Free samples up to 5 kg are provided. Technical support including material selection, equipment matching and extrusion parameter tuning is available.
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