升华转印纸涂布生产线：气刀涂布与防卷曲

A sublimation paper coating machine line is a complete system used to apply a specially formulated sublimation coating onto base paper. The coating improves ink absorption, transfer rate, drying speed, and print sharpness for digital textile printing applications such as fashion fabrics, sportswear, home textiles, and soft signage.

Standard machines operate at 100–250 m/min, depending on coating formula, oven length, paper grammage, and coating method. High-end lines with efficient drying systems may reach 300 m/min for lightweight sublimation papers (35–60 gsm).

Most sublimation paper lines use:
Rod (Meyer bar) coater – common, stable, cost-effective
Air-knife coater – precise coating weight control
Blade coater – optional for high-end premium paper
Air knife coaters are the industry standard because they provide uniform thin coating layers suitable for digital sublimation printing.

Coating weight usually ranges from:
3–10 gsm for fast-dry lightweight paper
8–15 gsm for high-ink-load premium paper
The exact coating weight depends on the required transfer rate, drying performance, and printing resolution.

Base paper requirements usually include:
Grammage: 25–70 gsm
Surface smoothness: ≤ 6–10 μm
Low porosity to reduce ink penetration
Moisture content: 6–7%
High-quality base paper ensures fast drying and excellent color transfer.

A typical line includes:
Automatic unwinder
Coating head (rod/air-knife/blade)
Multi-section hot-air drying oven
Cooling cylinder section
Moisture regulation system
Calender or soft-calender
Rewinder or slitter-rewinder
PLC control system with tension control
These components ensure consistent coating quality and stable high-speed production.

A standard 1.6–2.5 m sublimation paper line typically requires:
Electricity: 60–120 kW depending on oven length and fans
Steam: 0.6–0.8 MPa for heated cylinders (if equipped)
Compressed air: 0.6–0.8 MPa
The hot-air drying oven is the largest energy consumer, and optional heat-recovery systems can reduce operating costs.

Professional suppliers provide:
On-site installation and commissioning
Operator and technician training
Coating formula guidance (ink absorption, anti-curl, fast-dry)
Process parameter optimization for GSM control and drying speed
Spare parts supply and long-term technical support
This ensures quick startup and stable long-term production.