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

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


You dream of cool summer nights away from the stings of mosquitoes ? A couple from Girondins have developed a new kind of mosquito net after a stay in Mauritius, where tiger mosquitoes among the smallest in the world. Combining their skills, Nathalie Capitaine, a former physics teacher, and her husband François Capitaine, a former polymer industrialist, have developed Mostiglass patented in April 2018 and validated by WHO.

Their invention protects from stinging insects but also brings refreshment to the rooms where it is installed. Several communities such as the cities of Paris, Montpellier and Agde are already customers. And, throughout France, individuals are showing interest in this solution, which can be installed on windows, French doors and bay windows, in a flexible or rigid form, in bespoke formats.

How does it work?

They started from the observation that mosquito nets already marketed can deform over time, and under the effect of the sun, losing their effectiveness. Some also darken the rooms of the houses. “François is well versed in polymers and has chosen to use polycarbonate,” says Nathalie Capitaine. Laser perforation was studied with the help of the WHO-accredited laboratory. [Organisation mondiale de la santé] to study the shape of the hole and to validate the most efficient. »

The former teacher worked on the shape of the perforations that play on a venturi effect, a physical principle that allows to “accelerate” the incoming air, 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’s 29 ° C outside, it’s 25 ° C inside,” said Nathalie Capitaine. And that can go as far as a ten-degree difference if outdoor temperatures are very high, according to lab tests.

To preserve the brightness of the housings, a colored treatment is applied around each perforation to allow light to penetrate without any “flashes of light”. Mostiglass flexible models in a reel are offered at 35 euros per m2 and 80 euros per m2 for rigid products.

Customers all over France

“We really have a need,” said Captain Nathalie. And often people react by wondering why they didn’t think of it earlier. And in this month of April, which is expected to mark the return of mosquitoes, individuals are increasingly soliciting the young company, whose activity was, like many others, somewhat slowed down during the health crisis. Recently, they equipped an individual who lives in the Sarthe. Until now, he could not enjoy his porch without being attacked by clouds of mosquitoes due to the proximity of a pond. Most of their customers live in the Mediterranean, in the Camargue, but also in Alsace, the Paris region and 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, for next year. “There are many inventors looking to sell their idea, but our ambition is to produce here in France,” says François Capitaine. Our goal is to be able to perfect the invention, especially in contact with customers and to gradually focus on production, delegating customer contact and installation. »

At the moment, they have no employees and are doing well because they have developed a highly automated process. But they will have to recruit in the future to cope with their international development. The cities of Bordeaux and Mérignac have recently expressed interest in Mostiglass. In particular, the device could be tested in nurseries that cater to a vulnerable and virus-prone audience for whom air conditioning is not recommended. “Mostiglass allows for a smooth air renewal,” says Nathalie Capitaine.

Both a cure for mosquitoes, whose populations are increasingly infesting our lands, and heat, while heat waves are becoming more frequent, Mostiglass could have a bright future ahead of it.

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