At present, window films mainly come from the United States, Japan and South Korea. At present, there are few manufacturers of explosion-proof membranes in China. According to reports, there are seven production processes for window films, as follows:
(a) HC wear-resistant layer, not easy to scratch.
(2) Safety base, glass explosion-proof layer.
(3) Color peritoneum, mainly chromatic aberration.
(4) metal heat insulation layer, anti-ultraviolet.
(5) The color film in the middle will combine the colors into one, mainly for concealment.
(6) PE synthetic fiber layer to strengthen the paper thickness and control shrinkage.
(7) The special transparent peeling adhesive layer is adhered to the glass, which is transparent and mainly prevents the glass from flying when it is blown up.
In addition, there is a transparent peeling film layer on the surface, which can be torn off to protect the "special transparent peeling adhesive layer" film.
2. Basic structure and material composition:
1. Polyester substrate (PET) is coated with scratch-resistant layer (SR) on one side and mounting adhesive layer and protective film on the other side. During construction and installation, the protective film is removed and the exposed side of the adhesive layer is attached to the inner surface of the glass. (If it is a specially designed outer film, stick it on the outer surface of the glass);
2. Polyester substrate (PET), called polyethylene terephthalate. It is an elastic substrate with strong durability, firmness, high toughness, moisture resistance, high and low temperature resistance and good performance. Clear and transparent, after a variety of technological treatments, such as body infiltration coloring, metal oxide coating, magnetron sputtering, sandwich synthesis and so on. , become a film with the same characteristics to meet the use needs of commercial buildings, houses, shops, windows, bank counters, museums, cars or ships and other different places;
3. According to the content of metal layer, the film with metal layer can be divided into single light film (single metal layer) and double light film (bimetal layer).
Mono-optical film structure: wear-resistant layer (hardened PET base film)-metal ion layer -PET base film-installation adhesive layer (including
Ultraviolet absorber)-protective film;
Dual optical film structure: wear-resistant layer (hardened PET base film)-metal ion layer-? PET basement membrane-metal ion layer-? Positron emission computed tomography (positron emission computed tomography)
The basement membrane is provided with an adhesive layer (containing ultraviolet UV absorbent)-a protective film;
4. Professional film manufacturers usually use their own patented adhesives for interlayer synthesis and adhesive layer installation, which are divided into pressure-sensitive adhesives (PSA) and water molecule activated adhesives (hydrosol);
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