100 years for the Charles Costa mirror shop




For 100 years, each of the 4 generations has seen their father invest in the Charles Costa business, without counting his time, deploying a lot of effort and always with passion


We are happy to celebrate this year the extraordinary anniversary of our centenary.


Be sure that the satisfaction of our customers will always remain at the heart of our priorities as well as the respect of commitments with our partners.


I join with all my colleagues in presenting to you our best wishes for health, success and serenity for this new year 2020.



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Sarthe. L’entreprise Grav’Or ce week-end à l’Élysée

L’entreprise mancelle de gravure sur verre, fait partie des 100 entreprises sélectionnées pour l’exposition « Fabriqué en France » qui se déroule les 18 et 19 janvier 2020 à l’Elysée.

Les samedi 18 et dimanche 19 janvier 2020, 100 entreprises françaises – sélectionnées parmi 1 750 dossiers – présenteront le savoir-faire « Fabriqué en France » de 100 départements français, à l’Élysée. L’entreprise mancelle Grav’Or a été retenue pour représenter la Sarthe.

Nommée aux Talents de la Sarthe 2018 dans la catégorie « entreprise », la société de miroiterie et décoration sur verre présentera ce week-end un paravent avec gravure à la main, feuille d’or et laquage en églomisé précise le site de l’Élysée.


Convergence of machines for stone and glass

The arrival of industrial synthetic materials on the stone market has surprising consequences on the machinery market. In fact, we see appearing from certain suppliers who are both on the glass and stone market on the stone machinery market, machines that were once exclusively used on the glass market.


Mainly for two reasons.


1 / These new materials are calibrated in thickness.

So we see machines appearing for polishing the edge (Bavelloni, Intermac, Bovone) similar to those used for glass (rectilinear, double edger).


The gain is much better productivity for running in and polishing the edge.


2 / Some materials are based on glass


We are witnessing the arrival of cutting systems from glass much more productive and easy to use (cutting tables, at Bavelloni, Intermac ...)

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Miroiterie en vente


Perspective départ en retraite une miroiterie de façonnage avec activité menuiserie aluminium et PVC est disponible à la vente.

L'entreprise dont le dirigeant est très connu et présent  sur le marché depuis de nombreuses années  possède un parc machines diversifié et est située dans une ville importante du Sud-Ouest.

Parc machines avec table de coupe, rectiligne, perceuse, machine à bandes...

Equipes de poseurs indépendants.


Pour plus d'informations glass@comascotec.com ou 06 64 73 63 77. Merci


Screen printing on flat glass

The screen printing technology comes from the latin word Sericum (soie) and the Greek word graphe (to write). So screen printing means to write on silk.

The first screen printing screen was carried out in Japan with hairs (after came silk, nylon, polyester..).

With screen printing technology you can print on glass a drawing designed on a screen covered with a synthetic  material (now generally polyesters) with aroung 40 wires for each centimeter.


The drawing on the screen is done with holes where the drawing has to be printed.  The textile is mounted on a frame and the glass positioned under the frame.

The enamel (but it is also possible to use inks, paintings…) is firstly put on the screen and moved after on the glass through the holes with pressure.

The enamel is after fixed on the glass with a heat treatment. This following step is very often done during the glass tempering.

Manufacture screens :

The screen is covered with a photo sensible product which closes every screens holes.

Then the screen is put on the drawing (transparent drawing) which has to be transfered on the screen.

With light action the photo sensible product is destroyed and the holes corresponding to the drawing created.


The screen printing markets :

Décoration : building, internal panels, shower panels…

Appliance : oven doors, vitroceramic cooking plates….

Automotive : wind screen and other glass used on automotive markets

Others : game machines, advertising…