A one-kilometre stretch of road made with its mix would use the equivalent of about 684,000 plastic bottles or 1.8m single-use plastic bags.
Chief executive Toby McCartney said the opening of its first factory was an “important milestone”.
He said it would help to tackle both plastic waste and potholed roads.
The new factory will granulate rubbish which would otherwise have gone to landfill.
The granules are mixed with an activator to make the plastic bind and it is then bagged ready to be distributed to asphalt producers.
The company said its mix allowed the bitumen used in the production of asphalt to be extended and enhanced, reducing the amount of fossil fuel used.Orginal Source