Q.Explain the solutions found by Ahmed Khan, a Bengaluru based plastic sack manufacturer, after realising the problems created by plastic wastes.

Concept: Corporate environmental responsibility and waste management innovation

Ahmed Khan, founder of Bangalore-based Ramky Enviro Engineers, recognized the severe environmental damage caused by plastic waste accumulation. His solution addressed both waste reduction and resource recovery.

Key steps in his approach:

1. Polyblend development – Khan's company created Polyblend, a fine powder produced by processing plastic waste, which could be mixed with bitumen for road construction.

2. Road construction application – This polyblend-bitumen mix was used to lay roads, providing better water resistance and increased longevity compared to conventional bitumen roads. …

The Problem and the Insight

Ahmed Khan observed the mounting crisis of plastic waste in Bengaluru — non-biodegradable sacks and bags choking drains, littering streets, and resisting decomposition for decades. As someone in the plastic manufacturing business, he felt a responsibility to address the very problem his industry contributed to. The key insight was simple but powerful: if plastic cannot be eliminated, repurpose it into something society needs.

Rather than viewing waste plastic as a disposal challenge, Khan saw it as a raw material waiting for a second life. This shift in perspective led to two practical, scalable solutions.

Solution 1: Polyblend for Road Construction

1. Collection and processing

   Khan organized the collection of plastic waste — bags, sacks, packaging films — from across the city. This material was cleaned, shredded into small pieces, and processed into a fine powder or granular form.

2. Creating polyblend

   The processed plastic was blended with bitumen (the sticky, black petroleum product used to bind road surfaces). This mixture, called polyblend, improved the binding properties of bitumen. Plastic's polymer chains interlocked with the bitumen matrix, enhancing durability and water resistance.

3. Application in roads

   Polyblend was used to lay roads in Bengaluru and later adopted in other cities. Roads constructed with this blend showed:

   • Greater resistance to cracking and pothole formation
   • Better performance in monsoon conditions (reduced water seepage)
   • Longer lifespan compared to conventional bitumen roads

   The innovation consumed thousands of tonnes of plastic waste annually, diverting it from landfills and water bodies.

Why These Solutions Matter …