Pe film for sanitary napkin

When selecting PE (Polyethylene) film, you must prioritize breathability (GSM - grams per square meter) and tensile strength. For sanitary napkins, the film typically ranges from 16 to 26 GSM. You should ensure the film is micro-porous to allow air circulation while remaining 100% waterproof to prevent leakage. Additionally, verify the softness index to ensure skin comfort and the printing clarity if you require branded backsheets.

Since this is a component of a personal hygiene product, suppliers should ideally hold ISO 9001 for quality management and ISO 14001 for environmental standards. More importantly, the raw materials must be FDA-compliant or meet REACH (EU) standards to ensure the film is free from harmful chemicals, heavy metals, and skin irritants. Request SGS or Intertek test reports for biocompatibility and chemical safety.

Cast PE film generally offers better uniformity in thickness and higher transparency/gloss, making it ideal for high-speed production lines. Blown film, while sometimes more cost-effective, may have slight variations in gauge but offers superior puncture resistance. For premium sanitary napkins, breathable cast film is the industry standard due to its superior mechanical properties and consistent performance during the lamination process.

To avoid machine downtime, the PE film must have a consistent friction coefficient (COF) to ensure smooth feeding. Specify the maximum roll diameter and core size (usually 3 or 6 inches) that fits your machinery. Ensure the supplier uses automatic splicing tapes and provides rolls with minimal joints (ideally zero joints per roll) to maintain a high Production Efficiency Rate.

PE film is sensitive to extreme heat and UV exposure. Ensure the contract stipulates seaworthy packaging, including black UV-protective stretch wrap and palletization with moisture-proof desiccants. Request that containers are stored below deck or away from heat sources on the vessel to prevent the film from becoming brittle or the layers from sticking together (blocking).

Since PE resin prices fluctuate with global crude oil indices, avoid fixed long-term pricing which may lead to suppliers cutting quality when costs rise. Instead, negotiate a formula-based pricing model linked to market benchmarks like Platts or ICIS. For bulk orders, aim for a volume-based discount of 5-8% when exceeding a full 40HQ container, and utilize Made-in-China.com's Secured Trading services to protect your deposit.

Never skip a Pre-Shipment Inspection (PSI). Hire a third-party inspector to verify the actual GSM vs. ordered GSM, water penetration resistance, and tensile elongation. Specifically, check the corona treatment level (measured in dynes) to ensure that adhesives or inks will bond correctly to the film surface during your manufacturing process. A dyne level of 38 or higher is typically required for good adhesion.

Verify the HS Code (typically 3920.10) to determine applicable import duties in your country. Be aware of Anti-Dumping Duties that some regions impose on plastic films from specific origins. Ensure the supplier provides a Certificate of Origin (CO) to take advantage of any Free Trade Agreements (FTA), which can significantly reduce your total landed cost.