Glue Curing Tunnel Oven

The Glue Curing Tunnel Oven is a high-efficiency, continuous thermal curing or radiation curing equipment specially designed for industrial production lines. It uses transmission systems such as belts, chains, or mesh conveyors to smoothly transport products coated, dispensed, or sprayed with adhesive through a narrow tunnel-shaped heating chamber. Under precisely controlled temperature and processing time, the adhesive is rapidly dried, hardened, and formed.

Main Application Fields

Electronics and Semiconductor Industry

Used for conformal coating drying on PCB circuit boards, adhesive fixing of electronic components, and glue encapsulation of LED modules.

Automotive Electronics Industry

Used for adhesive curing of electronic control systems, vehicle displays, sensors, and critical automotive components.

New Energy Industry

Used for adhesive dispensing and curing in lithium battery pack assembly, as well as heating and curing of sealing adhesives for photovoltaic module frames.

Optical and Medical Industry

Used for rapid curing and shaping of UV adhesives or heat-curable adhesives in lens assembly, medical syringes, and precision instruments.

Hardware and Packaging Industry

Used for continuous high-efficiency curing of printing inks after screen printing and adhesive coatings after packaging processes.

Core Technical Standards and Regulations

Although tunnel ovens are usually highly customized (non-standard designs) according to specific product requirements, their manufacturing and operation must comply with relevant national and industry standards.

Safety and Electrical Standards

GB 5226.1 — Electrical safety of machinery standards

GB 19517 — National technical safety specifications for electrical equipment

Explosion Protection and Heating Standards

Since adhesive volatile compounds may be flammable, the equipment should comply with:

GB 20115 — Safety requirements for industrial heating equipment

Relevant explosion-proof design specifications

Temperature Control Standards

The temperature uniformity inside the oven is generally required to reach high-level or Class A uniformity. Industry requirements typically control temperature variation within ±2°C to ±3°C.

Environmental Protection Standards

The equipment should comply with industrial exhaust emission requirements and is usually equipped with dedicated exhaust systems, waste gas collection ports, or recovery interfaces.

Outstanding Equipment Features

Continuous and Efficient Operation

Overcomes the limitations of traditional batch-type ovens. Materials continuously pass through the equipment, enabling seamless integration with fully automated dispensing production lines.

Multi-Zone Independent Temperature Control

The internal chamber is divided into multiple independent heating sections, such as preheating zones, high-temperature curing zones, and cooling zones. Different temperature profiles can be configured according to adhesive requirements.

Various Heating Mechanisms

According to different adhesive types, the equipment can be equipped with:

Hot air circulation heating

Far-infrared radiation heating

UV-LED ultraviolet curing system

Energy-Saving and Safety Design

Uses high-quality aluminum silicate insulation cotton to reduce heat loss. The equipment is equipped with electric lifting mechanisms for convenient maintenance, over-temperature alarms, and forced exhaust systems for volatile gases.

FAQ

Q1: What is the difference between a glue curing tunnel oven and a conventional industrial oven?

A: A conventional oven is usually a static batch-type heating system requiring manual loading and unloading, resulting in longer processing times. A tunnel oven operates as a continuous production line, where materials enter from one end and exit from the other, providing much higher efficiency and making it more suitable for large-scale automated manufacturing.

Q2: Can the equipment handle different types of adhesives, such as epoxy adhesive, UV adhesive, and silicone adhesive?

A: Yes, but the equipment must be selected according to the adhesive characteristics. Epoxy adhesives and silicone adhesives generally require hot air circulation or infrared tunnel ovens, while UV adhesives require UV-LED light curing tunnel ovens. Some advanced systems can be customized with combined hot air and UV curing modules.

Q3: How does the tunnel oven prevent bubbles or cracking caused by uneven adhesive heating?

A: This is achieved through multi-zone independent PID gradient temperature control. After entering the oven, the product first passes through a preheating zone for gradual temperature increase, allowing trapped air bubbles to escape. It then enters the high-temperature curing zone for complete curing and finally passes through a cooling zone to reduce temperature gradually, effectively preventing thermal shock, cracking, or deformation.

Q4: Can the conveyor speed and temperature of the tunnel oven be adjusted?

A: Yes. The equipment uses a frequency converter to adjust conveyor speed and is equipped with an intelligent PLC human-machine interface. Operators can precisely control the running speed and temperature of each zone according to adhesive thickness and curing time requirements.

Q5: How does the tunnel oven handle odors or harmful gases generated during adhesive curing?

A: The equipment is designed with an independent forced exhaust system and exhaust duct interface on the top of the oven. Volatile gases generated during heating are quickly extracted from the chamber and transferred through the factory ventilation system to environmental protection treatment equipment for purification before discharge.