What Are the Types of Car Window Films?
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Car window films can be categorized into dyed films, coated and composite process films, and vacuum thermal evaporation films. Below is an expanded introduction to each: 1. Dyed films: Currently, most dyed car films on the market use deep-dyeing technology, which involves adding heat-absorbing agents through deep dyeing to absorb infrared rays from sunlight and achieve heat insulation. However, since they also absorb visible light, the visible light transmittance is insufficient, and the clarity is poor due to inherent process limitations. Another major drawback of these films is that their heat insulation function degrades quickly, and they are prone to fading. They are relatively inexpensive. 2. Coated and composite process films: These films primarily serve to block intense sunlight. They were among the earliest types of car films produced and generally lack heat insulation properties. They were initially called sun paper or tea paper. 3. Vacuum thermal evaporation films: These films employ vacuum thermal evaporation technology, where an aluminum layer is evaporated onto the base material to achieve heat insulation. This is commonly referred to as the metal film category, offering relatively long-lasting heat insulation. However, the downside is lower clarity, which affects visual comfort, and another significant drawback is their high reflectivity.