Since the automobile solar film was put on the market, it has gone through four stages: dyeing film, metal reflection film, heat absorption film and intelligent spectrum selection film.
"Dyed film" is the first generation product, commonly known as tea paper, which is characterized by strong shading and simple installation. The disadvantage is that it does not keep warm and is easy to fade and degum.
"Metal reflective film" belongs to the second generation product. New viscose and thick film are used to improve the explosion-proof effect, which has certain heat insulation and sun protection performance. The heat insulation rate is between 20% and 60%, and the ultraviolet shielding rate is about 80%.
"Heat-absorbing film" belongs to the third generation product. Compared with the first two kinds of automobile films, the ultraviolet blocking rate of this film is improved to 90%- 100%, the infrared blocking rate is improved to about 30%-95%, and the adhesive is more viscous, thus achieving the effects of reducing the thickness of the film and improving the explosion-proof performance. Heat absorber is added to the film, and the heat is insulated by heat absorption principle. When the heat absorption capacity of the heat absorber reaches saturation, it will not absorb heat again, and its long-term heat absorption and release will lead to the decline of performance with time, and the chemicals in the glue will slowly spread indoors with the heat of the film, which is harmful to human health.
"Intelligent spectrum selection film" belongs to the fourth generation product. Various precious metals are evenly distributed on the PET substrate by magnetron sputtering technology, which selectively gives consideration to visible light, blocks infrared light and ultraviolet light, and has the characteristics of high heat insulation, high light transmittance, high sun protection and low reflection. The high toughness film increases the explosion-proof coefficient of glass and makes driving safer.
First place 3 m; Second place Johnson & Johnson; The third place is Gu Wei; Fourth place Emerald Optics; Fifth place Ray-Ban; Sixth place Dragon Shadow; Seventh amber optics; Eighth quantum; Ninth place Northern Lights; Tenth DuPont; The above are arranged according to market share and popularity for reference only.