A window film and its manufacturing method, as well as a window film fixing structure and fixing method

Abstract

The invention provides a window film and a production method thereof as well as a window film fixing structure and a fixing method. The window film comprises a polyester film, a first metal oxide layer coated on the upper surface of the polyester film, a metal layer coated on the upper surface of the first metal oxide layer, a second metal oxide layer coated on the upper surface of the metal layer, and a silicon nitride layer coated on the upper surface of the second metal oxide layer. The window film fixing structure comprises the window film, a transparent double-sided adhesive tape and a transparent single-sided adhesive tape, wherein the transparent double-sided adhesive tape is arranged at the four corners or the periphery of the lower surface of the polyester film of the window film, and is used for fixing the window film on glass, and the transparent single-sided adhesive tape is arranged on the periphery of the upper surface of the silicon nitride layer of the window film, and is used for sealing the periphery of the window film on the glass. The window film provided by the invention can be used for reflecting a heat wave band released by a hot air conditioner and a heater to a room to achieve the purpose of keeping warm in winter, and also has a function of stably reflecting infrared rays in solar rays to achieve the purpose of insulating heat in summer.

Description

technical field [0001] The invention relates to the field of glass window film production, in particular to a window film and a manufacturing method thereof, as well as a window film fixing structure and a fixing method. Background technique [0002] In recent years, the domestic magnetron sputtering window film industry has just emerged. The structure of high-end magnetron sputtering window films mostly uses single-layer silver, double-layer silver, or three-layer silver as the basic core layer, and the basic core layer is four layers. Silver or window film products with more than four layers of silver are not suitable for mass production because the cost is too expensive. The principle of this type of magnetron sputtering window film is that the nano-metal layer has the function of stably reflecting infrared rays in sunlight, especially infrared rays with a wavelength in the range of 850nm to 2500nm. When the building glass is pasted with this kind of magnetron sputtering...

AI Technical Summary

Problems solved by technology

However, this type of window film is not suitable for keeping warm glass doors and windows in winter. This is because the wavelength of heat released by hot air air conditioners and heating in winter is concentrated in the 2500nm to 25μm band. Ester film (PET) and pressure-sensitive adhesive will absorb and radiate a lot of heat in this band, thus losing the reflection effect and not having the function of heat preservation

At present, low-E double-glazing products are more advanced and widely recognized among energy-saving products for glass doors and windows, but such energy-saving products are very expensive and are not conducive to energy-saving renovation of doors and windows in existing buildings

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