When to pick SC paper
Pick SC paper when cost matters and you're running flexo or rotogravure on long runs, particularly for direct-mail inserts and catalog supplements. SC is also preferred for high-opacity single-side print where see-through to the back side would ruin readability.
When to pick LWC
Pick LWC when print quality is the driver, particularly for offset printing of magazines, brochures, and premium catalogs. The coating gives a smoother ink receptor and sharper halftones.
The decision in one paragraph
For high-quality consumer magazines, LWC is the default. For direct mail, Sunday inserts, and cost-optimized catalogs, SC is 20 to 30% cheaper at comparable print quality on modern presses.
Frequently asked questions
What is supercalendering?
A finishing process where paper passes through a series of alternating hard and soft rolls under high pressure. The pressure compresses the surface, producing a smoother, glossier finish without a mineral coating.
Is LWC or SC more sustainable?
SC has a lower carbon footprint per tonne because it skips the coating step. LWC coatings also complicate recycling in some mill streams.
Can you interchange SC and LWC?
Not directly. The two grades have different surface characteristics that affect print plate setup. Converting between them requires a press calibration pass.