The heating principle of high-power heat sealing machines

1. High-Frequency Heat Sealing Machine (Radio Frequency Heat Sealing Machine)

Principle: Utilizes high-frequency electromagnetic waves (typically 13.56MHz or 27.12MHz) to polarize the molecules within the material and generate frictional heat, achieving melting and bonding.

Features:
* **Fast Heating Speed:** Heating can be completed in just 0.1-1 seconds, suitable for high-speed production lines.
* **Strong Penetration:** Can heat the interior of materials, suitable for multi-layer composite materials (such as aluminum-plastic film, PVC/nylon composite fabric).
* **No Open Flame:** Safe and environmentally friendly, with no risk of combustion.
* **High Equipment Cost:** Complex high-frequency generator and mold design result in a large initial investment.
* **Applicable Materials:** PVC, PET, PE, TPU, plastic films containing polar groups, etc.
* **Typical Applications:** Membrane construction industry, food packaging bags, medical infusion bags, automotive interiors, electronic component encapsulation.

**Selection Recommendations:**
* **Material Type:** Prioritize heating methods that match the material's polarity (e.g., high-frequency for PVC).
* **Production Speed:** High-frequency heating is suitable for high-speed production lines.

Bond strength: Hot presses or high-frequency heat sealers offer higher strength.

By clearly defining requirements (materials, output, precision, budget), the most suitable high-power heat sealer type can be precisely selected.