Akd emulsion

When purchasing AKD Emulsion, you must prioritize the solid content (typically 12%, 15%, or 19%) and the active ingredient purity. A high-quality emulsion should have a pH value between 2.0 and 4.0 to ensure stability. Additionally, check the particle size (ideally < 1.0 micron) and viscosity (< 50 mPa.s), as these factors directly impact the sizing efficiency and mechanical stability during the papermaking process.

For food-grade paper packaging, the AKD Emulsion must comply with FDA 21 CFR 176.170 or BfR XXXVI standards. Ensure the supplier provides a Material Safety Data Sheet (MSDS) compliant with GHS standards. If exporting to Europe, REACH registration is essential. For general quality management, prioritize manufacturers holding ISO 9001:2015 and ISO 14001 certifications to ensure consistent chemical batch quality.

The choice depends on the paper grade and machine speed. For high-speed paper machines, you require an AKD Emulsion with high shear stability to prevent emulsion breaking. If producing cultural paper or cardboard, look for 'surface sizing' vs 'internal sizing' compatibility. For liquid packaging board, a specialized high-concentration AKD is needed to provide superior lactic acid resistance.

AKD Emulsion is a heat-sensitive chemical. You must confirm that the supplier guarantees a shelf life of 3 to 6 months when stored at 5°C to 25°C. Buyers should avoid products stored in temperatures exceeding 30°C, as this leads to hydrolysis, reducing the sizing effect and potentially causing spots on the finished paper.

The biggest risk is temperature fluctuation during transit. For cross-border shipping, use reefer containers (refrigerated) if crossing tropical zones to prevent the emulsion from thickening or stratifying. Ensure the packaging uses IBC tanks (1000L) or plastic drums (200kg) that are UV-resistant and hermetically sealed to prevent contamination and evaporation.

Utilize Made-in-China.com's 'Audited Supplier' reports to verify the factory's production capacity and R&D strength. Always request a Pre-Shipment Inspection (PSI) by a third party like SGS or Intertek to test the active content and sizing degree (Cobb value) against the provided COA (Certificate of Analysis) before the final balance is paid.

Since AKD prices are tied to raw material costs (stearic acid and PCL3), negotiate a formula-based pricing model for long-term contracts. Request tiered pricing where the unit cost drops by 5-10% for full container loads (FCL). Additionally, negotiate for free samples (1-5kg) to conduct laboratory hand-sheet trials before committing to a trial order.

Always use Secured Payment services provided by professional platforms to ensure funds are only released after bill of lading (B/L) verification. Avoid direct wire transfers to private accounts. Ensure the Incoterms (e.g., CIF or CFR) are clearly defined in the contract to establish exactly where the risk of loss transfers from the seller to the buyer.