When producing thermal paper, NCR paper, barrier paper or other coated paper, coating quality directly determines printing performance, smoothness, and end-user satisfaction. Here are the five key parameters:

1. Coating Weight (Coat Amount)

The right coating weight ensures proper color density, smoothness, and barrier performance.

Too low → poor coverage, weakcolor

Too high → waste of coating material, higher cost, uneven surface

2. Coating Speed

Machine speed affects coating thickness and drying performance.

Higher speed → thinner coat, risk of streaks if not well-controlled

Lower speed → thicker coat, but may cause drying defects

3. Drying Temperature

Proper temperature keeps the coating smooth and prevents cracking.

Too low → wet spots, slow production

Too high → coating becomes brittle, may yellow over time

4. Ambient Humidity

Humidity affects coating rheology and paper stability.

Too dry → paper may curl, static electricity increases

Too humid → slow drying, risk of stickiness or blocking

5. Web Tension

Stable tension keeps coating uniform across the paper width.

Uneven tension → streaks, coating breaks, poor winding quality

At Qingdao Jieruixin, we monitor all these parameters in real time with advanced control systems. This ensures every roll of paper you receive has consistent coating quality, smooth surface, and excellent printing results.

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