I. Five Common Misconceptions and Correct Practices
1. Misconception: Focusing only on price, ignoring material compliance.
Manifestation: Choosing low-priced PVC belts to save costs without verifying compliance with industry standards (e.g., food-grade, anti-static).
Consequences: Food factories using non-food-grade PVC may cause product contamination; electronics factories using ordinary PVC may cause static electricity accidents.
Correct Practices: The food industry must choose products certified by FDA 21 CFR 177.2600 or EU 10/2011.
The electronics industry should choose anti-static PVC with a surface resistivity in the range of 1×10⁵–1×10⁹Ω.
2. Misconception: Believing PVC is a panacea, ignoring its oil resistance limitations.
Manifestation: Using ordinary PVC conveyor belts in environments containing lubricating oil or mineral oil.
Consequences: PVC will swell, soften, and peel off its surface layer when in contact with grease, leading to unstable operation or even breakage.
Correct Practices: PVC can be used normally in oil-free environments; for scenarios with long-term grease contact, PU (polyurethane) or rubber conveyor belts should be used instead.
3. Misconception: Ignoring temperature adaptability and misusing in high- or low-temperature environments.
Symptoms: Using standard PVC belts in baking lines (>80℃) or cold storage (<-10℃).
Consequences: PVC softens and deforms at high temperatures and becomes brittle and cracks at low temperatures.
Correct Practices: For high-temperature scenarios (such as food baking), silicone or Teflon conveyor belts are recommended; for low-temperature scenarios (such as frozen foods), modified cold-resistant PVC or PU materials that can withstand -40℃ should be selected.
4. Misconception: Confusing flame-retardant with ordinary PVC and ignoring safety standards.
Symptoms: Using ordinary PVC belts in flammable environments such as coal mines and chemical plants.
Consequences: PVC itself is flammable and releases toxic gases when burning, posing a significant safety hazard.
Correct Practices: High-risk industries must use flame-retardant and anti-static PVC belts that pass GB/T 16412 testing; ensure products have international flame-retardant certifications such as UL 94 and ISO 340.
5. Misconception: Ignoring material characteristics leads to excessively rapid wear.
Symptoms: Using ordinary PVC belts to transport highly abrasive materials (such as ores and metal shavings).
Consequences: Rapid belt wear and perforation, affecting production continuity.
Correct Practices: In high-wear scenarios, use thickened PVC (e.g., 3-5mm) or multi-layered fabric reinforcement structures; or directly use more wear-resistant materials such as rubber belts.
II. Tips for Avoiding Pitfalls: Three Steps to Confirm Material Compatibility
Clarify Operating Conditions: List parameters such as temperature, contact materials (oil/acid/alkali), load, and speed;
Request Testing Reports: Request the supplier to provide material specifications and third-party testing reports;
Small-Batch Trial: Conduct trial runs before key production lines to verify actual performance.
