Pbat

When purchasing PBAT, you must prioritize the Melt Flow Index (MFI), which typically ranges from 2 to 6 g/10 min depending on whether it is for film blowing or injection molding. Additionally, verify the melting point (usually 110°C–120°C) and density (approx. 1.20–1.26 g/cm³). For high-quality applications, ensure the moisture content is below 0.05% to prevent degradation during processing.

To ensure global market access, the product must meet EN 13432 (European Standard) or ASTM D6400 (US Standard) for compostability. Furthermore, look for certifications like TÜV AUSTRIA (OK Compost) and BPI (Biodegradable Products Institute). If the PBAT is intended for food packaging, it must comply with FDA (US) or EC 1935/2004 (EU) food contact regulations.

PBAT is rarely used alone; it is often blended with PLA (Polylactic Acid) or Starch to improve stiffness and reduce costs. A common ratio for shopping bags is 60% PBAT and 40% PLA/Starch. Increasing the PBAT content enhances ductility and impact resistance, while increasing PLA improves tensile strength and clarity. Buyers should request a Certificate of Analysis (COA) to verify the specific blend composition.

PBAT is primarily used in flexible packaging, such as biodegradable courier bags, mulch films for agriculture, and compostable trash bags. Due to its excellent mechanical properties, it is also increasingly used in disposable catering supplies and medical packaging where environmental impact is a primary concern.

PBAT is sensitive to humidity and high temperatures. Ensure the supplier uses vacuum-sealed aluminum foil bags for packaging and consider temperature-controlled containers if shipping through tropical regions. Always include a desiccant in the packaging to maintain a dry environment, as hydrolysis can significantly reduce the material's shelf life.

Focus on volume-based pricing tiers, as PBAT prices are highly sensitive to raw material costs (Adipic acid and BDO). Request a sample for lab testing (5-10kg) before committing to a full container. Negotiate for staggered delivery schedules if you lack climate-controlled warehousing, and prioritize suppliers who offer technical support for film-blowing adjustments.

Utilize Secured Trading Services provided by platforms like Made-in-China.com to ensure payment is only released upon proof of shipment. For large orders, hire a third-party inspection agency (like SGS or Intertek) to conduct a Pre-Shipment Inspection (PSI) to verify the weight, packaging integrity, and batch consistency against the agreed specifications.

Stay informed about plastic ban policies in your target country, as these drive demand and may trigger specific import tariffs. Check if your region has anti-dumping duties on Chinese polyester products. Ensure the supplier provides a Certificate of Origin to help you benefit from any applicable Free Trade Agreements (FTAs) that could reduce your customs duties.