Stretch film

Selecting the correct material is vital for load stability. Most high-quality stretch films are made from LLDPE (Linear Low-Density Polyethylene). For heavy or irregular loads, prioritize Cast Stretch Film for its high clarity and quiet unwind, or Blown Stretch Film for superior puncture resistance and 'clinging' strength. Regarding thickness, 12-15 microns is suitable for light loads, while 20-23 microns is the industry standard for heavy industrial pallets. Always verify the elongation rate, as premium films should offer 200% to 300% stretchability to reduce material waste.

To ensure performance, you must confirm the Tensile Strength (resistance to breaking under tension) and Puncture Resistance (ability to withstand sharp corners). Request data on Cling Properties, ensuring the film sticks to itself but not the product. For outdoor storage, specify UV Stabilization requirements to prevent the film from degrading in sunlight. If using automated machinery, ensure the Paper Core Diameter (usually 3 inches) and Roll Width are compatible with your equipment.

For international trade, ensure the supplier holds ISO 9001 certification for quality management. If the film will be used in proximity to food, it must comply with FDA (USA) or EC (Europe) food-contact regulations. Additionally, check for REACH and RoHS compliance to ensure the absence of hazardous substances. Requesting a Third-Party Inspection Report (such as SGS or Intertek) on the film's mechanical properties is a professional standard for bulk B2B procurement.

Don't just look at the price per roll; calculate the Cost Per Pallet Wrapped. High-performance Pre-stretched films are often more economical because they require less physical effort and less material to achieve the same containment force. Compare Net Weight vs. Gross Weight—some low-quality suppliers use heavy paper cores to inflate the weight. Ensure you are paying for the actual plastic weight. Bulk discounts on Made-in-China.com typically trigger at 1-5 tons, offering savings of 10-20% compared to LCL (Less than Container Load) orders.

The primary risk is material substitution, where a supplier uses recycled resins instead of 100% virgin LLDPE, resulting in poor transparency and frequent tearing. Another risk is moisture damage during sea transit; ensure the supplier uses heavy-duty moisture-proof packaging and pallets are securely shrink-wrapped. To mitigate financial risk, use Secure Payment services on platforms like Made-in-China.com to ensure funds are only released upon proof of shipment.

Start by requesting a Technical Data Sheet (TDS) and a physical sample. Negotiate a Quality Consistency Clause in your contract, stating that bulk production must match the sample's micron thickness and stretch ratio. Discuss Lead Times clearly; standard production for a 20ft container is usually 15-20 days. For long-term partnerships, ask for customized printing (logo/branding) on the film or cores, which can enhance your brand visibility at a low marginal cost.

Stretch film is heavy and dense, making Sea Freight (FCL) the most cost-effective method. To maximize container utilization, request palletized loading for easy unloading or floor loading to fit more rolls if you have the labor to unload manually. Ensure the Incoterms (e.g., FOB or CIF) are clearly defined. For buyers in the US or EU, stay updated on Anti-dumping duties that may apply to plastic products from certain regions to avoid unexpected customs costs.