The primary objective of the existing work is to evaluate hot gas welding technique for PP composite material and carrying out analysis over the critical parameters (air flow rate, temperature, weld time) to determine material weld strength in tensile conditions. Polypropylene blend with elastomer have wide application in engineering areas due to their desired properties but due to these changed properties over existing one recycling get affected and became difficult so their reparability should be considered. Hot gas welding helps to join the cracks and restore defects in it. Extracting the optimized values from critical parameters will help to make the method more efficient and effective. Tensile probing carried over specimen by considering ASTM standards assist to know former and later tensile conditions of welded joints.

Keywords : Hot gas welding, PP+EPR blends, Air flow rate, Parameters, Plastic joining.