Title of the Innovation: BIODEGRADABLE PACKAGING FILMS
Brief About Innovation
BIODEGRADABLE PACKAGING FILMS
ABOUT THE TECHNOLOGY:Preparation of biodegradable films using extrusion processing having comparable cost to that to petroleum based polymers is required. Guar gum is a biopolymer and is widely available in India.
Process involves three steps:
Preparation of plasticized guar gum: Plasticized guar gum is prepared by mixing guar gum with suitable plasticizers and additives and subjecting the mixture to desired time temperature conditions.
Making compound of plasticized guar gum and PVA: Plasticized guar gum obtained above is mixed with desired grade of PVA and mixture is subjected to twin screw extrusion in presence of compatibilizer. Strands obtained are cut in form of pellets.
Making of films by blown film extrusion: Pellets obtained above are then subjected to blown film extrusion in a single screw extruder and films are formed.
SALIENT FEATURES
Can be easily prepared using locally available raw materials.
Have suitable mechanical and barrier properties for general purpose packaging applications and food packaging applications
Easy process which is amenable for industrial scale up
