Pet film

When evaluating PET film, you must prioritize thickness (measured in microns or mil), tensile strength, and thermal stability. For packaging or electronics, ensure the film has a low shrinkage rate (typically <1.5% at 150°C) to prevent deformation during processing. Additionally, check the surface tension (Dyne level); a level of 38-42 Dynes is usually required for high-quality printing and coating adhesion.

Selection depends on the end-use: BOPET (Biaxially-oriented PET) is ideal for high-strength packaging and electrical insulation due to its balanced mechanical properties. If you are in the garment decoration industry, look for DTF (Direct to Film) PET film, which requires a specific cold or hot peel coating. For solar panels or outdoor use, ensure the film is UV-stabilized and has high moisture barrier properties to prevent degradation.

For food-grade packaging, the supplier must provide FDA (U.S.) or EC 1935/2004 (EU) compliance certifications. For electronic applications, RoHS and REACH compliance is mandatory to ensure the absence of hazardous substances. Always request an ISO 9001 certification from the manufacturer to guarantee consistent quality management systems across production batches.

Calculate the yield (square meters per kilogram) rather than just looking at the price per ton, as density and thickness consistency directly impact your total output. Seek suppliers on Made-in-China.com who offer tiered pricing for bulk orders (e.g., 5-10 ton increments). Be aware that while recycled PET (rPET) may offer cost savings or meet sustainability goals, it may have slightly different optical clarity and tensile properties compared to virgin PET.

The primary risks include moisture damage during sea transit and surface scratching due to poor palletization. To mitigate this, insist on vacuum-sealed packaging with desiccant and the use of suspended core packaging for rolls to prevent flat spots. Always use Trade Assurance services on Made-in-China.com to protect your payment until the goods are verified against your specifications.

Focus on long-term volume commitments to secure stable pricing, as PET resin prices fluctuate with global oil markets. Negotiate for free master-roll samples (at least 20-50 meters) to conduct machine trials before placing a full container order. Ask the supplier to include detailed COA (Certificate of Analysis) for every batch to ensure accountability for technical deviations.

PET film is heavy and sensitive to extreme heat. Ensure the container is stowed away from heat sources on the vessel to avoid film blocking (layers sticking together). For shipping to countries with high humidity, specify plastic pallets instead of wooden ones to comply with ISPM 15 and reduce the risk of mold. Confirm the HS Code (typically 3920.62) with your customs broker to accurately calculate import duties and VAT.