They invent a resistant mosquito net that also refreshes the air in your room

You dream of cool summer nights sheltered from the bites of mosquitoes ? A couple from Girondins developed a new type of mosquito net after a stay in Mauritius, where tiger mosquitoes among the smallest in the world. Combining her skills, Nathalie Capitaine, a former physics professor, and her husband François Capitaine, a former industrial specialist in polymers, have developed Mostiglass patented in April 2018 and validated by the WHO.

His invention protects against insect bites but also refreshes the rooms where it is installed. Several communities such as the cities of Paris, Montpellier and Agde are already clients. And, throughout France, private individuals are showing interest in this solution, which can be installed on windows, balcony doors and bay windows, in a flexible or rigid way, in custom-made formats.

How does it work ?

They started from the observation that mosquito nets already on the market can deform over time, and under the effect of the sun, losing their effectiveness. Some also darken rooms in dwellings. “François knows a lot about polymers and he chose polycarbonate”, says Nathalie Capitaine. The laser perforation was studied with the help of the WHO-accredited laboratory. [Organisation mondiale de la santé] study the shape of the hole and validate the most efficient. »

The ex-professor worked in the form of the perforations that play with a venturi effect, a physical principle that allows “accelerating” the air that enters, this decompression is mechanically accompanied by a drop in temperature. Result: Above 20°C outside temperature, the incoming air is cooled by passing through the Mostiglass device. “If it is 29°C outside, it will be 25°C inside”, explained Nathalie Capitaine. And this can reach a difference of ten degrees if the outside temperatures are very high, according to laboratory analysis.

To preserve the luminosity of the cases, a color treatment is applied around each perforation to allow light to pass through without causing “light flashes”. Mostiglass flexible roll models are offered at 35 euros per m2 and at 80 euros per m2 for rigid products.

Clients throughout France

“We are really filling a need,” says Nathalie Capitaine. And often people react by wondering why we didn’t think of it sooner. “And in this month of April, which should soon sign the return of the mosquitoes, individuals are increasingly looking to the young company, whose activity has been slowed down like so many others during the health crisis. Recently, they outfitted an individual who lives in Sarthe. Until now, he could not enjoy his terrace without being attacked by clouds of mosquitoes due to the proximity of a pond. Most of his clients live around the Mediterranean, in the Camargue, but also in Alsace, in the Paris region and in the Gironde (Arcachon Basin, Médoc).

Installed in the Cheminnov nursery of the ENSCPB Bordeaux, the couple is preparing to move to Dax, in the Landes, next year. “There are many inventors looking to sell their idea, but our ambition is to produce here in France,” stresses François Capitaine. Our goal is to be able to perfect the invention, in particular in contact with customers and gradually focus on production, delegating customer contact and installation. »

Right now they have no employees and they get by because they have devised a very automated process. But they will have to recruit in the future to face their anticipated international development. The cities of Bordeaux and Mérignac have recently expressed interest in Mostiglass. In particular, the device could be tested in day care centers that cater to a fragile and virus-prone public for whom air conditioning is not recommended. “Mostiglass allows a gentle renewal of the air”, emphasizes Nathalie Capitaine.

Both as a remedy for mosquitoes, whose populations are increasingly infesting our regions, and for heat, although heat waves are expected to become more frequent, Mostiglass could have a bright future ahead of it.

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