Building window film

Abstract

The invention relates to a building window film, which includes a polyester thin film base material and a multilayer thin film coating layer having different optical constants, and also a bonding agent layer and a surface hardening layer. The bonding agent layer coats the multilayer thin film coating layer and the hardening layer coats the other surface of the multilayer thin film coating layer. The multilayer thin film coating layer is formed from one or more of SiOx, TiOx and Ag. In the invention, a metal oxide is arranged at the most exterior layer to prevent a silver layer from oxidizing corrosion. The multilayer coating technology, compared with magnetron sputtering, is higher in production benefit and lower in cost.

Description

technical field [0001] The invention relates to a building window film, in particular to a heat-insulating building window film with high transparency and high infrared reflection. Background technique [0002] Architectural window film is mainly used in doors and windows, partitions, ceilings, glass curtain walls of public buildings and residential buildings, as well as partitions of buildings such as banks and hospitals, shop windows along the street and jewelry stores, etc., mainly for heat insulation, energy saving and safety protection. effect. At present, under the vigorous promotion of the national energy-saving and emission-reduction policy, my country has further intensified the application of energy-saving products in new buildings and the energy-saving renovation of existing buildings. Among them, glass doors and windows are used as thin-walled enclosure structures in buildings, which play a role in lighting and energy-saving. The kinetic energy of the ventilation...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many kinds of architectural window film products in the market, which can be divided into dyed film, primary color film, vacuum coating film, nano-ceramic film, and nano-multilayer film. These products have different problems such as insufficient heat insulation performance, poor weather resistance, complex manufacturing process and high cost.

Chinese patent 201110367312.2 discloses a method for preparing a high-performance transparent glass heat-insulating coating. A new type of high-performance transparent mixed nano-slurry prepared by mixing and dispersing blue WO3, ATO and ITO is then mixed with transparent polyurethane resin and filtered to obtain high insulation. Transparent glass thermal insulation coating with thermal properties, this infrared-absorbing thermal insulation coating has secondary heat release

Chinese patent 201410042012 discloses a method of roll-to-roll magnetron sputtering, combining two five-layer structures into a double resonant cavity, including two dielectric layers on the upper and lower sides, a conductive metal layer in the middle, and a conductive metal layer sandwiched between Two anti-oxidation metal layers between the metal layer and the two dielectric layers, the process is complex and difficult to control, requiring gold and silver as the conductive metal layer is expensive

US Patent 200880123604.8 discloses a multilayer transparent window film comprising a polymeric backing layer with opposed major surfaces, at least one metallic layer on the opposed major surfaces of the backing layer and a coating on the metallic layer. Adhesive layer, the product is mainly designed with a metal layer, but the metal layer will have a shielding effect on electromagnetic signals, and it will interfere with mobile phone signals when pasted on architectural glass, although the patent uses a resist to protect the metal layer However, there is still a risk of corrosion of the metal layer during the long-term use of the window film

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