The indoor temperature with window film can be reduced by 2-4 degrees Celsius compared with that without film film. Effectively block 99% harmful ultraviolet rays in the sun, and minimize the radiation damage of harmful rays to people and indoor objects. Indoor air conditioning in winter and summer can save more than 30% electricity. In addition, it can effectively prevent thieves from invading through windows and protect personal and property safety; Effectively prevent accidental glass breakage and splash caused by typhoons, earthquakes, explosions and other emergencies from causing harm to people and articles; Indoor observation can clearly see the exterior scene, and outdoor observation can not clearly see the indoor scene, which can effectively protect indoor privacy.

Window film makes life better.

What is window film? In fact, it is a film, but it is also an indispensable film in people's lives. Widely used in every corner of architecture, automobiles and home life, it creates a green and safe home environment for people, and is recognized by more people because of its green environmental protection.

So is there a window film in Wuhan market? The reporter immediately consulted the relevant person in charge of Hongyang home improvement, leisure home improvement, famous decoration and other brand decoration companies, and the answer was "Yes, the top 100 brands favored by consumers at present. Subsequently, the reporter found traces of the top 100 films in the homes of several decoration customers.

During the interview, the reporter learned that Baiqiang membrane is a new type of energy-saving building materials. It uses a special polyester film as the substrate, and uses magnetron sputtering and other methods to plate different high-reflectivity metal or metal oxide coatings in the middle of the polyester film. It is a functional window film with light transmittance and high thermal insulation made by special process. It can turn cheap transparent flat glass into multi-color and multi-functional safety heat insulation glass, which is equivalent to a transparent sunlight protector.

According to the staff of the store, unlike curtains and shutters, which only shield light but do not insulate heat, the metal spraying layer in the window film can reflect and absorb up to 80% of infrared rays. When the outdoor temperature is 38℃ ~ 39℃, the indoor temperature of laminated glass room is 3℃ ~ 5℃ lower than that of ordinary glass room. Tests show that it can save more than 30% electricity for air conditioning, especially for houses with large glass area facing south, west and east.

In addition, the window film can block more than 90% harmful ultraviolet rays (SPF 100), which is much higher than other glass products and greatly prolongs the service life of furniture.

How much air conditioning electricity can window film save?

The existing building area in Shanghai is about 400 million square meters. If all existing buildings in Shanghai use window film to improve thermal insulation performance, how much electricity can be saved by turning on air conditioning in summer? Take a residential building and an office building as an example to calculate an account here.

Calculate the residential account first. In a unit facing 128 square meters to the west of the 7th floor of a residential area, the owner paid 285.70 yuan for electricity in February, but 632.80 yuan in July. Under the condition that other electrical equipment remained unchanged, the air-conditioning consumption increased by 347. 10 yuan. If the power consumption per kilowatt-hour is 0.48 yuan, then the monthly power consumption per square meter of air conditioner is 5.7 kwh ... Using DeST software simulation, window film can save about 30% of air conditioner power consumption. A family can save more than 100 yuan in electricity bills in a month, and if it takes half a year, it can save more than 600 yuan a year.

Then calculate the office account. On the 9th day, the west of a building faces a unit with an area of160m2. In February, the total electricity consumption of elevators, firefighting and air conditioners was 14 1.62 yuan, while in July, the total electricity consumption of elevators, firefighting and air conditioners was 767. 14 yuan, which was 625.52 yuan more when the electricity consumption of elevators and firefighting remained basically unchanged. After simulating the window film with DeST software, it can save about 30% of air conditioning power consumption. One unit can save 187.5 yuan for electricity in one month and 1 125.9 yuan in one year.

Six factors to judge whether the construction technology of automobile film is professional or not

Car enthusiasts have realized the necessity of car film. But finding a professional film is only half a good wish, because if it is inferior installation and service, it may not achieve the beauty effect you are pursuing, or even the opposite. ...

"Professional thermal insulation and explosion-proof membrane" requires "professional construction and installation"! It is suggested that consumers should measure and judge from the following aspects when sticking film on cars:

First, the special dust-free film pasting room-after the film pasting on the car window, there can be no defects and debris particles, so the professional installation must be carried out in the dust-free film pasting room! The clean room not only has a closed glass door isolated from the outside, but also has a water mist nozzle and air conditioner to realize air dust removal, and the ground has a drainage ditch and special paint to further realize dust removal.

There is a dedicated workbench and articles in the room, which are neatly arranged. The installation effect under such a construction environment is by no means achievable by street open-air operation.

Second, professional tools-unprofessional tools such as shovels can't squeeze the water clean, leaving blisters and bubbles, which are more likely to scratch the film; Carbon steel blades may scratch high-grade automobile glass ... unprofessional shops usually use domestic or homemade unprofessional tools, which are rough in material and fuzzy in function, and often serve multiple purposes. Most of the professional laminating tools are imported from the United States, with clear classification, beautiful appearance and easy identification.

Third, special chemical liquid-professional automobile film should use special film cleaning liquid and installation liquid, and dilute with pure water, so that the film and glass can achieve the maximum bonding strength, and will not cause defects such as edge warping and delamination, and achieve long-term quality assurance effect. Non-specialty stores are using household cleaning agents, ordinary soap and tap water, which cannot provide professional installation and warranty period.

Four. Installation technology-professional film pasting technicians should receive technical training from manufacturers (the training certificate should be hung in the store), and the whole paving and dry heat setting process should be adopted when pasting the front and rear windshields, and the film should be pasted on the edge of the glass window as far as possible ... When pasting the front and rear windshields, non-professional installers should spray the car glass wet first, then spread the film on it, and then set it with a hot gun, which may cause excessive thermal stress and uneven heating to the glass, resulting in the glass breaking on the spot or within a few days after pasting.

Verb (verb's abbreviation) protection measures during installation-professional installation should take good protection measures: prevent the paint surface from being scratched by moisture during installation, damage the interior decoration, and cause short circuit failure of the electrical appliances and audio in the car; Avoid seat damage caused by window film installation and failure caused by accidental scratch or damage on the instrument panel surface.

Sixth, the evaluation standard of appearance quality-professionally installed car film: (1) There should be no defects and sundries in the film, and there should be no creases and bubbles on the surface of the film; Stains, defects and sundries accumulated in the film are signs of low-quality installation. (2) There should be only 1-2mm micro-gap at the top of the hem window, which is not easy to find by rough observation. (3) The black glaze point area of the glass frame should be covered, without light leakage or edge warping, which is beautiful and harmonious. (4) There should be no visual ghosts and watermarks caused by uneven extrusion force and irregular extrusion path.

What are the explosion-proof principles of window film?

The explosion-proof mechanism of window film is that it can reduce the impact force from the outside of glass, enhance the impact strength of glass, delay the breaking time of glass and reduce the broken area of glass. Even if the glass is broken, it can stick to the glass fragments to prevent the glass fragments from splashing and causing personal and property injuries. Mainly reflected in the following aspects:

First, make full use of the toughness of basement membrane and the ductility of metal coating to improve the rigidity of glass and offset and effectively decompose the impact force from the outside.

Secondly, when an external impact occurs, when the impact force penetrates the glass and acts on the adhesive film, the impact stress on the adhesive film is relieved through the ductility of the adhesive film and the mutual micro-slip between multiple laminates in the film body, and the impact resistance is formed.

Thirdly, when the glass is broken due to strong impact, the ductility of the adhesive layer and the adhesive film is used to stick the fragments firmly, so as to avoid splashing injury and protect personal and property safety.