Single side coated paper

When evaluating C1S paper, you must prioritize Grammage (GSM), typically ranging from 50g to 400g depending on the application. Key performance indicators include Whiteness/Brightness levels (usually >85% for premium printing), Surface Smoothness (Bekk) to ensure ink adhesion, and Glossiness. For packaging uses, verify the Stiffness and Bursting Strength to ensure the paper can protect the contents without tearing.

Single Side Coated Paper is ideal for applications where only one side requires high-quality printing while the other remains functional. Common scenarios include adhesive labels, posters, book covers, and high-end packaging boxes (like cosmetics or cigarettes). It is also widely used in flexible packaging for food, provided it meets specific food-grade safety standards.

Ensure the supplier adheres to ISO 9001 for quality management and ISO 14001 for environmental standards. For international trade, FSC (Forest Stewardship Council) or PEFC certification is often mandatory to prove sustainable sourcing. If the paper is intended for food contact, it must comply with FDA (US) or EC 1935/2004 (EU) regulations regarding chemical migration.

Request a Cobb Test report to measure water absorption and a Surface Strength (IGT) test to ensure the coating doesn't 'pick' or flake during high-speed offset printing. It is recommended to ask for unprinted samples to conduct a trial run with your specific ink types (UV, water-based, or solvent) to check for drying time and color reproduction accuracy.

The biggest risks are moisture damage during sea transit and edge damage due to improper palletizing. To mitigate this, insist on seaworthy packaging involving moisture-proof plastic film wrapping and reinforced corner protectors. Additionally, use Made-in-China.com's Secured Trading services to ensure payment is only released after the goods pass a pre-shipment inspection.

Paper prices are highly sensitive to pulp market fluctuations. It is wise to negotiate a formula-based pricing model for long-term contracts. For MOQs, while large mills prefer 20ft containers (approx. 15-20 tons), you can negotiate mixed-load containers if the supplier has multiple stock sizes. Always ask for a volume-based discount—typically 3-5% for orders exceeding 50 tons.

Paper is heavy and susceptible to 'core crushing' in roll form. Specify horizontal or vertical loading based on your unloading equipment. Ensure the container is clean, dry, and free of odors (especially for food-grade paper). For shipping to regions with high humidity, request desiccant bags inside the container to prevent 'wavy edges' caused by humidity changes.

Look for 'Audited Suppliers' on Made-in-China.com, as these companies have undergone on-site verification by third-party agencies like SGS or Bureau Veritas. Check their export history to your specific country to ensure they are familiar with your local customs requirements and Anti-Dumping Duties (ADD) that might apply to specific paper categories.