Decide based on usage scenario and performance requirements
01
How to Select PVC Wire & Cable Compound?
Recommend evaluating from four dimensions: Usage scenario, Working temperature, Flame retardancy, Processing method.
Usage scenario: Building wiring, electronic wire, outdoor wiring, appliance internal wiring, power plug — different scenarios need different mechanical, weather and appearance performance.
Working temperature: Standard 70℃. For higher temp, choose 90℃ or 105℃. For cold, choose -40℃ modified.
Flame retardancy: Different industries and certifications have different flame retardant grade requirements — clarify if specific certification needed.
Processing method: High-speed or standard extrusion, injection or extrusion, thin-wall or standard thickness — all affect formulation adjustment.
No perfect match? Just call us — we can develop new formulas per your scenario.
02
70℃, 90℃, 105℃ — What's the Difference?
Different working temperatures correspond to different PVC formulations and additive systems:
Temperature
Typical Application
Formula Feature
70℃
Standard building wire, electronic wire jacket
Standard PVC plasticizer & stabilizer
90℃
Some appliance internal wiring
Heat-resistant plasticizer & stabilizer
105℃
Water heater, oven, transformer leads
Modified PVC / special plasticizer system
Price rises with temperature rating. Select based on actual working temperature — no need to always pick the highest.
03
-40℃ Cold-resistant vs Standard PVC
Standard PVC hardens and becomes brittle at low temperature — cracks appear below -10℃. -40℃ cold-resistant compound uses modified plasticizer system and adjusted formulation to maintain flexibility at low temperature.
Packaging: Standard 25kg/bag, ton bag or pallet packing on request.
Shelf life: Standard 6-12 months (sealed, dark, cool and dry).
Storage notes: Avoid direct sunlight, away from heat sources, moisture-proof, separate from other chemicals.
06
Why Source Directly from Factory?
Wire & cable compound isn't generic. Different customers have different conductor structure, extrusion speed, die specs, usage scenarios — if the formula doesn't match you'll see:
Temperature, flame retardant, cold resistance not meeting requirements
Batch color shift affecting finished product consistency
Factory-direct allows custom formulation, small-batch trial, retained formula records — and stable batch consistency for long-term supply. This is hard for traders and finished-compound makers to match.
If you're evaluating suppliers, feel free to call first to discuss needs — or visit our factory directly.
FAQ
Common Questions
Common questions from customers
Q01How should I select PVC wire & cable compound?
Four key dimensions: ① Usage scenario (building / electronic / outdoor / appliance); ② Working temperature (70℃ / 90℃ / 105℃); ③ Whether flame retardant and what grade; ④ Processing method (extrusion speed, die specs). If you have a specific standard (GB/T 8815, UL, etc.), follow that.
Q02What's the difference between 70℃, 90℃, and 105℃ temperature ratings?
Mainly the PVC formula and plasticizer choice: ① 70℃ is standard PVC insulation; ② 90℃ uses heat-resistant plasticizer and stabilizer; ③ 105℃ needs modified PVC or special plasticizer system — price increases accordingly. Select based on actual working temperature, not always the highest.
Q03Where can -40℃ cold-resistant PVC be used?
Main scenarios: northern outdoor wiring, agricultural machinery cables, cold storage / refrigeration equipment wiring, winter construction site cables, northeast / northwest China engineering wiring. Standard PVC becomes brittle below -10℃; cold-resistant compound maintains low-temperature flexibility via modified plasticizer system.
Q04What are ROHS / REACH / NP? What's needed for export?
ROHS is the EU hazardous substances directive (restricts lead, mercury, cadmium, hexavalent chromium, PBB, PBDE). REACH is the EU chemicals regulation (EC 1907/2006) with SVHC list. NP usually refers to Nonylphenol — restricted by some environmental standards. Wires & cables exporting to EU, US, Japan usually require these. OEM customers should specify the target market when inquiring.
Q05What's the typical MOQ for PVC wire & cable compound?
Standard formula usually 500kg - 1 ton, convenient for trial and machine validation. New formula development can start from 100kg, but development cycle and material sourcing cost need consideration. Color custom and special performance customization usually have higher MOQ.
Q06How is color customization and batch color shift controlled?
For color customization, customer should provide color card (Pantone or physical sample) and we'll match. Batch color shift control points: ① Fixed pigment supplier; ② Fixed mixing process; ③ Per-batch retained sample comparison; ④ Key customers can establish color shift acceptance standard.
Q07What's the shelf life of PVC compound? Storage notes?
Standard PVC pellet shelf life is typically 6-12 months (sealed, away from light, cool and dry environment). Storage notes: ① Avoid direct sunlight; ② Keep away from heat sources; ③ Moisture-proof — use quickly after opening; ④ Store separately from other chemicals.
Q08Differences between factory-direct, trader and finished-compound maker?
① Factory-direct: own formulation, own line, adjustable per customer spec, small-batch trial possible, long-term supply stable; ② Trader: buys market finished compound for resale, fixed formulation, limited adjustment space; ③ Finished-compound maker: own formulation but typically mass-produces specific categories, medium customization flexibility.
Q09How does sample trial work? How long does it take?
Standard flow: Customer provides spec requirements → We quote and sample → Sample sent to customer for machine validation → Customer feedback and adjustment → Confirm for mass production. First sample usually 3-7 working days, express possible. Customer samples can also serve as development input.
Q10How to judge whether a PVC compound factory is reliable?
Check: ① Whether they have own formulation R&D capability (ask a few formula questions to test); ② Whether willing to do small-batch trial; ③ Stable raw material supply channels; ④ Complete batch retention system; ⑤ Professional and timely communication. Site visit is recommended.
More questions?
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