Heating Softening Tunnel Oven

The Heating Softening Tunnel Oven is an industrial continuous heating system that uses energy sources such as electricity or gas to continuously heat materials until they reach a softened state. It is specially designed for the continuous heating and softening treatment of materials including plastics, rubber, composite materials, metals, and other industrial materials.

Core Applications

1. Automotive Interior Industry

Used for preheating and softening materials before the forming process of automotive interior components, such as:

Vehicle headliners

Carpets

Instrument panel skins

2. Plastic Processing Industry

Used for softening and preheating plastic sheets such as:

Acrylic (PMMA)

PVC

ABS

before thermoforming processes.

3. Electronics Manufacturing Industry

Used for continuous heat shrinking of wire harness heat-shrink tubes and curing processes after PCB dispensing.

4. Rubber Industry

Used for continuous preheating and vulcanization treatment of rubber products.

Applicable Standards

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

GB/T 30579 — Energy Efficiency Evaluation Standards for Pressure Equipment and Industrial Furnaces

ISO 13849 — Safety-Related Parts of Control Systems

Main Features

1. Continuous Production

The equipment adopts a conveyor transport system, making it suitable for high-volume continuous production lines and automated manufacturing processes.

2. Precise Temperature Control

The system adopts multi-zone independent temperature control, combined with PLC control and PID algorithms, providing high temperature control accuracy and stable heating performance.

3. Uniform Heating Performance

The equipment generally adopts far infrared radiation heating or hot air circulation heating methods to ensure uniform heating across the material surface and improve processing consistency.

4. High Efficiency and Energy Saving

The oven body uses high-density thermal insulation materials to minimize heat loss and improve thermal energy utilization efficiency.

FAQ

Q1: What heating methods are commonly used in a heating softening tunnel oven?

A:The main heating methods include far infrared radiation heating and forced hot air circulation heating.

Far infrared radiation heating provides fast heating speed and is suitable for thin materials.

Hot air circulation heating offers better heat penetration and higher temperature uniformity, making it suitable for thicker materials.

Q2: How does the equipment ensure temperature uniformity inside a long tunnel oven?

A:The equipment achieves uniform temperature distribution through multi-zone independent temperature control, hot air circulation fans, and precision temperature controllers (PID). Combined with optimized air outlet design, the temperature difference inside the oven can be controlled within ±2°C.

Q3: What materials are commonly used for the conveyor belt?

A:The conveyor belt material is selected according to the characteristics and temperature requirements of the processed materials. Common options include:

PTFE (Teflon) mesh belt — Non-stick performance, suitable for temperatures below 260°C

Stainless steel mesh belt — High temperature resistance and strong load-bearing capacity

Silicone rubber belt — Suitable for specific material heating applications requiring flexibility and surface protection

Q4: What safety protection features does the equipment have?

A:Standard safety protection functions include:

Over-temperature alarm and automatic power cutoff

Conveyor overload protection

Abnormal smoke detection alarm

Emergency stop buttons at the inlet and outlet sections

For gas-fired models, additional safety features include:

Explosion-proof pressure relief doors

Gas safety protection systems

Q5: How should the suitable tunnel oven size be selected for a specific product?

A:The tunnel oven dimensions should be determined based on:

Maximum product dimensions

Required heating and softening time

Target production capacity and conveyor speed

The total oven length and working channel width are calculated according to these process requirements to ensure sufficient heating time and production efficiency.

The Heating Softening Tunnel Oven provides a reliable continuous heating solution for industries requiring precise material softening and preheating processes. With advantages including accurate temperature control, uniform heating, energy efficiency, and flexible production integration, it is widely used in automotive, plastics, electronics, rubber, and composite material manufacturing industries.