50kg sugar bags and sacks

For a 50kg capacity, you must prioritize PP (Polypropylene) woven fabric with a high GSM (grams per square meter), typically between 70g/m² to 90g/m². To prevent leakage of fine sugar granules and protect against moisture, the bags should feature a PE (Polyethylene) inner liner or be laminated (BOPP coating). Ensure the stitching uses a double-thread chain stitch at the bottom to prevent bursting under the weight.

Since sugar is a food product, the bags must be made from 100% virgin food-grade materials. You should require suppliers to provide FDA (U.S. Food and Drug Administration) or EC 1935/2004 (EU) compliance certificates. Additionally, look for ISO 22000 or HACCP certifications to ensure the manufacturing environment meets global food safety management standards.

Sugar is often transported in tropical climates or stored in semi-open warehouses. Without UV stabilizers (anti-UV additives), PP bags become brittle and tear easily when exposed to sunlight. Ensure your technical sheet specifies a UV resistance rating that guarantees the bag's integrity for at least 3 to 6 months of outdoor exposure.

For high-quality branding, BOPP (Biaxially Oriented Polypropylene) film lamination allows for multi-color, photographic-quality printing and provides an extra layer of moisture protection. For basic industrial use, flexographic printing is more cost-effective. Ensure all inks used are non-toxic and low-odor to avoid contaminating the food product inside.

Request a Drop Test Report from the supplier. A standard 50kg bag should survive a 1.2-meter drop onto a hard surface without rupture. For large orders, hire a third-party inspection agency like SGS or Intertek to perform random onsite testing before the balance payment is made.

Focus on the weight-to-price ratio. Since PP is a commodity, prices fluctuate with raw material costs. Negotiate based on GSM and virgin vs. recycled material content—never sacrifice quality for a lower price as recycled PP significantly reduces load-bearing capacity. Ask for tiered pricing based on container loads (e.g., 20GP vs. 40HQ) to optimize shipping costs.

Sugar bags are bulky but relatively light compared to their volume. Use palletized packaging with stretch wrap to prevent shifting during sea transit. Ensure the container is inspected for moisture and 'container rain'; using desiccant bags inside the container is highly recommended to keep the woven sacks dry and prevent mold on the inner liners.

Utilize the Secured Trading Service on Made-in-China.com to protect your payment until shipping documents are verified. Prioritize Audited Suppliers who have undergone on-site verification of their production facilities, financial status, and export capabilities.