Electric Heat Shrinkage Furnace

An electric heat shrinkage oven is a device that generates heat through electricity and is used to heat and shrink packaging materials (such as heat shrink films, bags, etc.) for packaging industries. Here is an overview of its products: 

1. Working Principle

Through electric heating elements (such as quartz tubes, stainless steel heating tubes, etc.), thermal energy is generated. Using the heat air circulation or infrared radiation method, the heat shrinkable film wrapped on the surface of the product is uniformly heated to cause it to contract and tightly adhere to the shape of the product.

2. Core Components

Heating System: Electric heating tubes, temperature controller, cooling fans, etc. 

Conveying system: Conveyor belt (driven by a variable-speed motor), ensuring that the products pass through the heating zone at a uniform speed. 

Control system: Controlled by PLC or microcomputer, adjusting parameters such as temperature and speed. 

Furnace structure: Insulation layer design (such as rock wool, stainless steel shell), reducing heat loss.

3. Product Features

High efficiency and energy saving: Electrical energy is directly converted into thermal energy, with high thermal efficiency. Some models support segmented temperature control. 

Temperature accuracy: PID temperature control technology, with temperature difference within ±2℃. 

Wide applicability: Capable of processing various shrink films such as PVC, POF, PE, etc. 

Safety protection: Overheat protection, fault alarm, anti-scald design, etc. 

Operation is simple and convenient: Touch screen or button panel, parameters can be preset and stored. 

4. Application Areas

Food and Beverage: Label shrinking for mineral water bottles, cans, etc. 

Personal care products: cosmetic products, packaging for detergent bottles. 

Electronics products: Bundled packaging of batteries and wires. 

Printed matter: The shrinkage of the laminated coating on books, periodicals and magazines. 

5. Classification and Selection

By heating method: hot air circulation type, infrared radiation type. 

According to the conveying form: tunnel type (continuous operation), cabinet type (intermittent operation). 

Selection Reference: The length, power and temperature range of the furnace body are selected based on the product size, production capacity (such as the throughput per minute), and membrane material.

6. Notes

It is necessary to match the shrinkage temperature of the membrane material to avoid film perforation caused by overheating. 

Regularly clean the debris inside the furnace and maintain the heating elements. 

This type of equipment is applicable to medium-sized to large-scale production lines. It can be customized as an automated integrated model (such as in combination with packaging machines and labeling machines) according to the requirements.