WHAT IS UPVC
UPVC is based on polyvinyl chloride (PVC), one of the most versatile polymers found in the century. PVC today finds application in almost all facet of our life, from daily use to highly sophisticated life saving applications. This flexibility of PVC is leveraged through a unique formulation to prepare a special UPVC blend for windows and doors.
UPVC (where 'U' stands for unplasticized) is one of the most preferred window framing material across the world. The material comes in a range of color, is low maintenance and offers benefits which no material so far has matched.
UPVC is prepared with a special formulation in which modifiers and stabilizers are added to polyvinyl chloride (PVC) making it rigid and suitable for use as window frames.
PVC forms the major (approx 80 - 85 %) constituent of blend composition. PVC unlike other polymer is heat sensitive and hence needs additives for processing. The property of material is such that it can be made as soft as rubber or can have strength close to any other engineered plastic. This versatility is developed through additives (like light and UV stabilizer, processing aids, impact modifier, lubricants, fillers, pigments, plasticizer etc.) which are added in PVC during the blending process.
Stabilizer - Heat & Light:
As PVC cannot be processed due to its heat sensitive nature, Heat stabilizers are must to improve the stability of PVC and render it process-able. Sufficient stabilizer is required to prevent degradation of base material during processing. Lack of sufficient stabilizer may lead to early discoloration of profile when