cling film

Cling film is primarily produced from three materials: PE (Polyethylene), PVC (Polyvinyl Chloride), and PVDC (Polyvinylidene Chloride). PE film is the most common for household use, ideal for fruit and vegetable preservation due to its high breathability. PVC film offers superior stretchability and transparency, making it the standard for supermarket meat packaging, though it should not be used with high-fat foods or in microwaves. PVDC film provides the best oxygen and moisture barrier, suitable for long-term storage and high-temperature heating.

Buyers must evaluate thickness (typically 8-15 microns), tensile strength, and clinginess (adhesion). For industrial or catering use, ensure the film has anti-fogging properties to maintain clarity in refrigerated displays. Heat resistance is critical; PE is generally safe up to 110°C, while specialized PVDC can withstand up to 140°C. Always request the Oxygen Transmission Rate (OTR) and Moisture Vapor Transmission Rate (MVTR) data to ensure food shelf-life requirements are met.

Products must strictly adhere to food-contact safety regulations. For the US market, FDA 21 CFR 177.1520 is mandatory. For the EU, compliance with Regulation (EU) No 10/2011 regarding plastic materials intended to come into contact with food is required. Ensure the supplier provides Migration Testing Reports (Total and Specific Migration) to prove that no harmful chemicals (like phthalates or BPA) leach into food.

Request a Certificate of Analysis (COA) for every batch. To optimize costs, compare the price per meter/square meter rather than price per roll, as roll lengths can vary significantly. Evaluate the core weight; some suppliers use heavy paper cores to inflate the gross weight of the product. For large-scale operations, sourcing jumbo rolls for local rewinding can significantly reduce shipping costs and import duties.

The primary risk is non-compliance with local food safety laws, which can lead to customs seizures or heavy fines. Another risk is material substitution, where a supplier might provide PVC instead of the requested PE to save costs. To mitigate this, use third-party inspection services like SGS or Intertek to perform FTIR infrared spectroscopy to verify the polymer type before shipment.

Focus on volume-based pricing tiers and customization (OEM) capabilities. Ask for free samples to test the 'cling' factor and puncture resistance. Negotiate payment terms such as 30% deposit and 70% against the Bill of Lading (B/L). For long-term partnerships, seek exclusivity agreements or fixed pricing for a 6-month period to hedge against raw material (resin) price fluctuations.

Cling film is sensitive to temperature and pressure. Ensure the shipping container is ventilated and kept away from heat sources to prevent the film from 'blocking' (sticking to itself on the roll). During storage, rolls should be kept upright or on specialized racks to avoid flat spots. For shipping to countries with high humidity, ensure the outer cartons are moisture-proof to prevent the paper cores from collapsing.

Always conduct transactions through secured payment channels provided by professional platforms like Made-in-China.com. Check for Anti-Dumping Duties (ADD); some regions impose high tariffs on plastic products from specific countries. Verify the supplier's Business License and Export Qualification to ensure they are a legitimate manufacturer and not an unlicensed middleman.