After a lot of experiments and strict examination, we are able to develop a set of production formula and technique suitable for co-extrusion white profile by using co-extrusion technique of color profile. The designed “double layer” window frame reinforces the anti-aging property of profile, solves the problem of windows fading and achieves the great breakthrough in the super weather resistance property of profile.
Scientific Cavity Design:
Four Square anti-uv profile comes with multi-cavity structure, good temperature insulation; tiny heat transfer coefficient which is only 1/1250 of aluminum profile; better air proof property than aluminum window by installing rubber sealing; good water proof property by independent drainage cavity in frames and sashes.
Systematic Optimized Design:
Plentiful varieties including hundreds of profiles are able to meet requirement of making different complicated windows. The systematic optimized design of anti-uv profile ensures the increase of wall thickness without adding weights to the profile. The window rate is from 96 to 160.43 m2/T, a good performance-price rate.
Solid Anti-blast Pressure Property:
It is possible to insert 2-3mm reinforcement steel into cavity of profile. According to local blast-pressure, heights of building and hole size, reasonable window design and usage of reinforcement steel and profile can ensure the intensity requirement of windows and doors in construction.
Aiming at the special weather of India, Four Square group seriously developed Four Square anti-uv co-extrusion profile in its profile factory. It completely solves the aging and fading problem of white profile under high intensity UV light and fills the blank of the industry in India.
Modifying the common-used CPE and ACR systems in profile formula, we use special technique to solve more efficiently the aging and fading problems of white profile in the area of high UV intensity, meanwhile overcoming the default of low-temperature impact performance of co-extrusion profile.
Weather Resistance performance Difference of CPE and ACR System:
1. Weather Resistance Default of CPE
Because the reacting HDPE presents as particle, the reaction starts from the surface of the particle to the interior, thus there exits non-release HCL inside, resulted in the product degradation to fade.
2. Structure Advantages of ACR
ACR is the core-shell structure copolymer of methyl methacrylate and butyl acrylate monomers, unable to degrade PVC, thus highly enhancing the weather resistance performance of PVC profile.
Principle of High Density TiO2
1. Because of high density TiO₂ of co-extrusion layer and Four Square specific disperse technique, it produces a high unit density of TiO₂ in the co-extrusion layer of the profile, which is 2.5 times higher than the normal profile, thus resulted in apparently better absorbability of UV light by the surface than other similar products.
2. The high density of TiO₂ in the co-extrusion ayer greatly enhances refraction and dispersion rate, more efficiently resists UV light, and prevents the possibility of photochemical reaction with copolymer or other additives by absorbing UV energy.
UV absorbent can efficiently absorb and transfer UV energy, lower the damage of UV light to the profile.
