Fenova Quality

Sr. No.
Required Additives
Why Required
Solution to acquire the Properties
1 Impact Modifier For IMPACT STRENGTH
Normal uPVC material becomes brittle when exposed to sunlight and low temperatures.
Use of sufficient quantity acrylic based modifier additives. Acrylic impact modifiers help retaining the impact strength even after prolonged use and exposure to sunlight.
2 Titanium dioxide / UV additives RESISTANCE TO UV EXPOSURE
When exposed to sunlight, the ultra violet rays in the sunlight penetrate the polymer matrix and cause oxidation, resulting in discolouration and brittleness after a period of time.
Use of substantial quantity of rutile grade titanium dioxide (Tio2).
In addition to Tio2, use of UV absorbers and anti-oxidants.
Apart from imparting good opaque white colour to the window, Tio2) reflects the UV rays, thereby restricting oxidation and maintains the colour and strength of the profile for long periods.
Absorbs the UV rays and restricts oxidation, thereby enhancing the UV resistance especially useful for a tropical climate like India, florida etc. and can sustain 8000 hrs of accelerated UV exposure test.
3 Heat Stabilizer PVC is very heat sensitive and burns before it reaches its melting point during extrusion. Hence has to be stabilized to make it processable. Use of a good quality Heat stabilizer in appropriate quantities. Prevents degradation of PVC during processing making it more heat and light stable.
4 Fillers Selecting the appropriate type of toughness filler like Calcium Carbonate is a key requirements as These fillers act as extenders and impart toughness To PVC. Use of fine particle size performance grade fillers in appropriate quantity. Enhances stiffness, mechanical properties and gloss
5 Processing Aid Ample fusion of PVC melt is essential to enhance Sufficient gelation of the compound. Unsuitable or low-cost Processing aids do not yield the Physical properties desired in Fenova’s Quality Windows Use of acrylic process aids. Assist in faster and better fusion of all components in a PVC compound, resulting in improved surface finish apart from better strength and Weatherability of the Profile Section.
6 Lubricants GLOSS / PVC gelation / dispersion of additives lubricants influence the manner in which PVC melts and flows during processing apart from giving a glossy surface. Use of performance grades of Internal and external lubricants in optimized quantity. Superior gloss. Increased melt homogeneity results in enhanced dimensional stability of profile and better weld strength.


Sr. No.
Required Additives
Other CHEAPER options / but not recommended
Adverse Effect
1 Impact Modifier Use of Insufficient quantity (2-4%) of acrylic impact Modifier.
Use of "CPE" as an Impact modifier.
Lower raw Material cost, but lower Impact strength, hence not recommended.
"CPE" being cheaper than acrylic grades reduces the raw material cost but hampers the UV Stability of the profile, therefore unable to maintain the Impact strength for long periods, hence not recommended.
2 Titanium dioxide / UV additives Use of insufficient quantity of Tio2. Use of sub - standard cheaper grades of Tio2 (anatase grade).
Since UV stabilizers are the most expensive additives, avoid using the same.
Instead of UV stab, use of just "DBLP".
Reduced protection against UV rays resulting in discoloration and brittleness in the profile. / not recommended.
Unable to restrict UV rays. / not recommended.
Lesser overall UV resistance directly causing reduced Life of the window. After some time, the window gets discoloured and brittle.
"DELP" just gives short term UV stability.
3 Heat Stabilizer Use of cheaper and insufficient quantity of heat stabilizers, thereby reducing the raw material cost. The slightest degradation of PVC during processing will lead to lesser mechanical properties and light stability.
4 Fillers Use of high levels of cheaper grades of coarse calcium carbonate, thereby substantially reducing the raw material cost. Higher levels of fillers deteriorate the mechanical properties to a huge extent.
Due to higher density, the weight per mtr of the profile increases thereby increasing the per metre cost of the Profile.
5 Processing Aid Avoid using process aids to reduce the cost. Uneven fusion causes reduced dimensional stability, surface finish in the profiles affecting the performance and aesthetics of the window.
6 Lubricants Use of cheaper general grades of lubricants like HC / PE waxes. Lesser gloss, dimensional stability and weld strength of the profiles.