His company, Objet D'Fox, collects discarded plastic waste donated from the community.
Fox said the Christchurch City Council's plan to ban straws, as well as the Government's decision to ban plastic bags, are slow steps for environmental sustainability.
"It's like putting a band aid on an arm that's been chopped off."
He said banning only bags and straws wasn't going to help, as people needed to get behind the end of single-use material.
However, Fox did cite China's ban on foreign waste as a reason for New Zealand's growing sustainability awareness.