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

Do you dream of cool summer nights away from mosquito bites? A Girondins couple have developed a novel mosquito net after a trip to Mauritius, where tiger mosquitoes are among the smallest in the world. Nathalie Capitaine, former physics professor, and her husband François Capitaine, former industrial specialist in polymers, combined their skills and developed Mostiglass, patented in April 2018 and validated by the WHO.

Her invention protects against biting insects, but also cools down the rooms in which she is installed. Several municipalities such as the cities of Paris, Montpellier and Agde are already customers. And throughout France, private individuals are expressing their interest in this solution, which can be installed on windows, French doors and bay windows, in flexible or rigid form, in bespoke formats.

How it works ?

They started from the observation that the mosquito nets already on the market deform over time and lose their effectiveness when exposed to the sun. Some also darken the rooms of the apartments. “François knows a lot about polymers and chose polycarbonate,” says Nathalie Capitaine. The perforation made with lasers was examined with the help of the WHO accredited laboratory. [Organisation mondiale de la santé] to study the shape of the hole and validate the most efficient one. »

The former teacher worked on the shape of the perforations playing with a Venturi effect, a physical principle that allows the incoming air to “accelerate”, this decompression being mechanically accompanied by a drop in temperature. Result: Above 20°C outside temperature, the incoming air is cooled by passing through the Mostiglass unit. “If it’s 29°C outside, it’s 25°C inside,” explains Nathalie Capitaine. And according to laboratory analyzes this can be a difference of up to ten degrees at very high outside temperatures.

To preserve the luminosity of the cases, a colored treatment is applied around each perforation to allow light to enter without “light flashing”. Flexible Mostiglass models in a roll are offered at 35 euros per m2 and for rigid products at 80 euros per m2.

customers all over France

“We really fill 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 mean the return of mosquitoes, individuals are increasingly looking for the fledgling company whose activities, like many others, have been slowed down during the health crisis. Recently they equipped a person who lives in Sarthe. So far he has not been able to use his porch without being besieged by swarms of mosquitoes because there is a pond nearby. Most of their customers live around the Mediterranean, in the Camargue but also in Alsace, in the Paris region and in the Gironde (Basin of Arcachon, Médoc).

The couple, who are based at ENSCPB Bordeaux nursery Cheminnov, are preparing to move to Dax in the Landes for the next year. “There are many inventors who want to sell their idea, but our goal is to produce here in France,” emphasizes François Capitaine. Our goal is to perfect the invention especially in customer contact and gradually focus on production by delegating customer contact and installation. »

Right now they have no employees and are making ends meet because they have developed a very automated process. But they need to recruit in the future to face their development which they aspire to internationally. The cities of Bordeaux and Mérignac have recently expressed interest in Mostiglass. The device could be tested in particular in nurseries, which welcome a sensitive and virus-prone audience for whom air conditioning is not recommended. “Mostiglass allows for a gentle renewal of the air,” emphasizes Nathalie Capitaine.

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

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