Glazing Reduces Traffic Noise
From the Foundation for Research, Science and Technology For immediate release
GLAZING REDUCES TRAFFIC NOISE
A window and plastic panel combination that quietens noise from outside buildings has been developed by
Christchurch-based Magic Seal (NZ). The system cuts down noise better than double-glazing because it deflects sound
differently, says managing director Trevor Bunting. “Double-glazing consists of two sheets of glass, each reacting the
same way to sound,” Mr Bunting says. “Glass and thermal panels react differently from each other, resulting in
significantly reduced noise.” The product’s noise-muffling benefits were developed in a research project that involved
the University of Canterbury and was part-funded by Technology New Zealand. “We were aiming for a product that would cut
down on outside noise better than double-glazing,” Mr Bunting says. “The university’s mechanical engineering department
fired sound at a control panel, and at our sample window and panel which were set about 40-50mm apart. They found a huge
drop in truck-rumble – about 10 decibels. The noise was barely audible.” The window panel is magnetically sealed against
the window frame and is made of materials that won’t rot or stain. It is energy-efficient, controls condensation, almost
eliminates fading of fabrics from sunlight, and is almost invisible when installed. Mr Bunting says the results of the
research funding from Technology New Zealand – part of the Foundation for Research, Science and Technology – gave the
company the confidence to proceed with production. “We need to export because there are overseas markets for this,” he
says. “The research has resulted in a product that will perform significantly better than what is currently available
and thus opens the door to new export markets.” Magic Seal started up in 1989 and employs three people. It imports and
makes up magnetic thermal insulating windows and magnetic insect screens. -ends-
Contact: · Trevor Bunting, Magic Seal (NZ) Ltd, 10c Sheffield Cres, Burnside, Christchurch 8005. Ph: (03) 358-9223.
Fax: (03) 358-9427. Email: magseal@chch.planet.org.nz. Website: www.magicsealworld.com · Tony Hadfield, Technology New
Zealand (Christchurch office) at the Foundation for Research, Science and Technology, (03) 377-9340 or 025 494-095.
Website: www.technz.co.nz
Prepared on behalf of the Foundation for Research, Science and Technology by ID Communications. Contact: Ian Carson (04)
477-2525, ian@idcomm.co.nz