License Plate Ink Drying Tunnel Oven (Far Infrared)

The License Plate Ink Drying Tunnel Oven (Far Infrared) is a continuous industrial heating system that utilizes far infrared heating technology to rapidly cure and dry the ink printed or roller-coated on the surface of automobile license plates.By using far infrared radiation, the equipment enables efficient heat penetration into the ink layer, achieving fast curing, improved adhesion, and consistent printing quality for large-scale license plate production.

Core Applications

1. License Plate Manufacturing

Mainly used for drying and curing printed characters and ink coatings on aluminum license plates and reflective film license plates.

2. Signage Processing Industry

Suitable for curing surface coatings of various traffic signs, metal nameplates, and identification labels.

Applicable Standards

GB/T 37048-2018 — Specification for Production Management of Motor Vehicle License Plates

GA 36-2018 — Motor Vehicle License Plates of the People's Republic of China

GB 5226.1 — Electrical Safety of Machinery — Electrical Equipment of Machines — Part 1: General Requirements

JB/T 7619 — General Specifications for Far Infrared Radiation Heaters

Features

1. Strong Penetration Capability

Far infrared radiation directly penetrates into the inner layer of the ink coating, enabling simultaneous drying from the inside and outside. This prevents surface skin formation, blistering, and coating sagging caused by uneven drying.

2. High Efficiency and Energy Saving

With high thermal efficiency, the equipment can save more than 30% energy consumption compared with traditional electric heating ovens.

3. Precise Temperature Control

The system adopts PID microcomputer intelligent temperature control technology, with independent control for each heating zone. The temperature difference can be controlled within ±1°C.

4. Continuous Production Line Operation

The oven adopts mesh belt or chain conveyor systems with adjustable conveying speed, allowing seamless integration with automated license plate production lines.

5. Environmentally Friendly Operation

The equipment is equipped with an independent exhaust system to effectively discharge volatile organic gases generated during the drying process, ensuring a safer working environment.

FAQ

Q1: What is the difference between far infrared heating and conventional electric heating wire heating?

A:Conventional heating mainly relies on air convection for heat transfer, which may cause the ink surface to dry first while the inner layer remains wet, resulting in blistering or poor adhesion. Far infrared radiation can penetrate the ink layer directly and cause molecular vibration, achieving overall drying from the inside outward. This provides faster drying speed and higher-quality results.

Q2: What is the typical drying temperature and drying time for this tunnel oven?

A:Depending on the type of license plate ink used, the drying temperature is usually set between 120°C and 180°C. The residence time inside the tunnel oven (drying time) is generally around 3 to 8 minutes.

Q3: Which transmission system is more suitable for license plate drying: mesh belt or chain conveyor?

A:The mesh belt conveyor is more suitable for flat placement and small-batch license plate production because it provides uniform heating.

The hanging chain conveyor or side-mounted chain conveyor is more suitable for large-scale automated production lines, as it prevents reflective films or uncured ink surfaces from contacting the conveyor, reducing damage and improving production yield.

Q4: How does the equipment ensure consistent color and quality of each license plate during mass production?

A:The equipment ensures uniform temperature distribution throughout the oven through multi-zone independent temperature control and hot air circulation systems. Meanwhile, digital frequency-controlled speed regulation ensures that every license plate remains inside the oven for exactly the same heating duration, maintaining consistent drying quality and color performance.

Q5: How should a far infrared tunnel oven be maintained and serviced daily?

A:Daily maintenance includes regularly cleaning residual ink volatilization products inside the oven, checking whether far infrared heating tubes are damaged or aged, inspecting conveyor belt tension during each shift, and regularly applying high-temperature resistant lubricant to bearings and transmission chains.

The Far Infrared License Plate Ink Drying Tunnel Oven provides an efficient, energy-saving, and reliable drying solution for modern license plate manufacturing. With advantages such as rapid curing, precise temperature control, and continuous automated production capability, it is an ideal choice for improving production efficiency and ensuring consistent product quality.