高周波是一種頻率遠高于常規(guī)電磁波的高頻振動能量波，其頻率通常大于100KHz，屬于電磁波的一種。高周波技術主要利用高頻電磁場使物料內部分子間互相激烈碰撞產生高溫，從而達到焊接、熔接、切割或改性的目的。

高周波設備通常由高頻振蕩器和加熱機構兩個主要部分組成。高頻振蕩器產生高頻電磁場，將其施加在電極上，被加工物件置于電極之間。在高頻電磁場的作用下，物件內部分子被激化而高速運動，相互摩擦產生熱量并熔化。在模具的壓力下，達到熔接、壓花或切斷的目的。

高周波技術具有多種優(yōu)點，如輸出電力強大、熔接速度快、質量穩(wěn)定等。它廣泛應用于塑料焊接、金屬表面處理、電子元件微細加工等領域。在塑料加工行業(yè)，高周波塑膠熔接機是塑料熱合的首選設備，廣泛應用于PVC、TPU、EVA等塑料材料的焊接、封口和壓花。此外，高周波技術還用于紡織品的熱合、壓花和切割，以及汽車內飾件的焊接和組裝等。

High Frequency (or High Frequency Wave) is a type of electromagnetic wave with a frequency much higher than conventional electromagnetic waves, typically exceeding 100KHz. High-frequency technology primarily utilizes high-frequency electromagnetic fields to cause intense collisions between molecules within materials, generating high temperatures and achieving welding, fusing, cutting, or modification.

High-frequency equipment typically consists of two main components: a high-frequency oscillator and a heating mechanism. The high-frequency oscillator generates a high-frequency electromagnetic field and applies it to the electrodes. The workpiece is placed between the electrodes. Under the action of the high-frequency electromagnetic field, the molecules within the workpiece are activated and move rapidly, generating heat through friction and melting. With the pressure of the mold, welding, embossing, or cutting is achieved.

High-frequency technology offers various advantages, such as powerful output, fast welding speeds, and stable quality. It is widely used in plastic welding, metal surface treatment, and micro-processing of electronic components. In the plastic processing industry, high-frequency plastic welding machines are the preferred equipment for plastic heat sealing, widely used in the welding, sealing, and embossing of PVC, TPU, EVA, and other plastic materials. Additionally, high-frequency technology is used for heat sealing, embossing, and cutting of textiles, as well as for welding and assembly of automotive interior parts.