Ldpe plastic granules

Buyers must prioritize the Melt Flow Index (MFI), which determines the processing method (e.g., MFI 0.3-2.0 for film blowing, MFI 7-20 for injection molding). Additionally, verify the density (typically 0.910–0.940 g/cm³) to ensure flexibility and transparency, and check for moisture content (<0.05%) to prevent bubbles during production.

For food-grade applications, ensure the supplier provides FDA (US) or EC 1935/2004 (EU) certification. For general safety and environmental impact, verify REACH and RoHS compliance. If sourcing recycled LDPE (rLDPE), look for GRS (Global Recycled Standard) to validate the post-consumer waste content.

Virgin LDPE offers superior transparency, tensile strength, and odorlessness, making it ideal for medical and food packaging. Recycled LDPE is more cost-effective but may have slight color variations (yellowish or greyish) and lower mechanical properties. Request a Certificate of Analysis (COA) to compare purity levels.

Film Grade is widely used for shrink wraps, agricultural films, and shopping bags due to its excellent toughness. Coating Grade is used for paper-plastic laminates (like milk cartons), while Injection Grade is suitable for flexible lids, squeeze bottles, and toys.

Always request a pre-shipment sample from the specific production batch. Utilize third-party inspection services (like SGS or Intertek) to verify that the MFI and density of the loaded cargo match the agreed specifications. On Made-in-China.com, prioritize Audited Suppliers who have undergone on-site factory verifications.

LDPE prices fluctuate with crude oil markets. Negotiate based on formula-based pricing or lock in rates for long-term contracts (6-12 months) to avoid spot price spikes. For large volumes (over 20 tons), aim for a 3-5% discount compared to LCL (Less than Container Load) pricing.

Ensure granules are packed in 25kg moisture-proof PP/PE woven bags or 1000kg jumbo bags. Request palletization with shrink wrapping to prevent bag breakage and contamination during transit. Ensure the container is dry and free of odors, as plastic granules easily absorb external scents.

Use Secured Payment services provided by platforms like Made-in-China.com to ensure funds are only released after proof of shipment. Avoid direct wire transfers to unknown personal accounts; always use corporate bank accounts that match the supplier's registered business name.