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Isolants thermiques en rénovation

Par Sophie Trachte et Dorothée Stiermon

Editeur EPFL

 

Ouvrage très technique et très complet sur les différentes techniques et les différents matériaux disponibles en rénovation thermique des constructions. Cet ouvrage décrit avec précisions les caractéristiques des différents matériaux présents sur le marché (isolants organiques, isolants minéraux naturels ou synthétiques, isolants composites, isolants innovants) en les décrivant (avec de nombreuses photos à l’appui) précisant leurs caractéristiques techniques chiffrées, leurs modes d’élaboration, et en balayant un grand nombre de critère permettant d’avancer vers le meilleur choix correspondant au matériau recherché .

Dans un chapitre complet il détaille leur influence sur la qualité de l’air et sur la santé. Il aborde ensuite sur une quarantaine de pages le cycle de vie des différents matériaux et leur impact environnemental.

Il aborde la notion de l’économie circulaire dans la conception et la mise en œuvre de ces différents matériaux.

 

Nombreux tableaux, articles scientifiques et thèses sur le sujet.

 

En annexe figure une liste de fabricants et producteurs

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Riou glass rentre sur le marché espagnol

 

Aprés une série de rachats de miroiteries en France sur ces 15 dernières années, puis être rentré en Belgique ( Euroglass) et en Italie ( Cappelletti et Roleri ) en 2022, le groupe Riou glass s’attaque maintenant au marché espagnol en rachetant le catalan Vidresif situé à proximité de Géron. Vidresif est une importante miroiterie avec un CA de l’ordre de 25 millions d’Euros. Le groupe Riou transforme chaque année plus de 100 000 tonnes de verre plat dont il produit une grande partie sur son float de Salaise sur Sanne. Il réalisera sur 2023 un CA supérieur à 260 millions d’Euros avec 1300 salariés et 26 unités de production

Bavelloni at GlassBuild AMERICA 2023

 

Bavelloni is pleased to announce its participation in the show  GlassBuild AMERICA 2023, the largest event for the glass, window, and door sectors in North America. Taking place in Atlanta (GA), from October 31 to November 2, 2023, the event will feature Bavelloni America Inc. at booth 3631.

 

On this occasion, Bavelloni will showcase some of its glass edging machinery, including the VE 500 V10 SCS mitering machine. This straight-line edger, suitable for heavy glass, can process flat edge with arrises and chamfers ranging from 0° to 45°. Notably, the SCS version of this machine incorporates an innovative spindle control system (SCS) for enhanced automation. This system ensures automatic wheel positioning, resulting in high quality finishes, minimized production waste, and optimized tool utilization. The Bavelloni VB 350 CNS bevelling machine, known for its efficiency, reliability, reduced maintenance and long lifespan will also be presented. Moreover, visitors will experience live demonstrations of the Bavelloni REV 372 SR cutting table, a very compact, accurate and fast stand-alone bench for straight and shaped cutting of monolithic glass. Also on display, a wide selection of Bavelloni diamond and polishing tooling.

 

Bavelloni’s team of experts will be on hand at our stand throughout the event to welcome guests and provide comprehensive insights into Bavelloni's diverse product portfolio.

 

To gain complimentary access to the exhibition, enter Bavelloni Customer Guest Pass Code 23GBAEXH upon your online pre-registration.

 

 

 

 

 

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Affutage des forêts diamantés pour le verre plat

La partie active d’un forêt diamanté, celle qui va permettre de percer le verre est constituée de grains de diamant. Ces grains de diamant sont noyés dans un alliage métallique qui a pour objectif de libérer peu à peu le diamant en surface du forêt diamanté de façon à pouvoir percer le verre.

En perçant le verre la partie supérieure du diamant va se briser peu à peu.

Ce liant doit s’user à la même vitesse que le diamant. S’il s’use trop vite il y a trop de diamant en surface et le forêt va s’user très rapidement et il y a un risque que le perçage se fasse avec des écailles. S’il s’use moins vite que les particules de diamant il n’y aura pas assez de grains de diamant en surface et le forêt ne percera plus le verre correctement. Dans ce dernier cas il faut affuter le forêt de façon à user le liant et refaire apparaitre des grains de diamant en surface. On utilise pour cela des pierres synthétiques, généralement en oxyde d’aluminium.

Mais le besoin d’affutage des forêts devrait être rare, du moins pour les meilleurs forêts diamantés. En effet les fournisseurs qui sont dans ce cas utilisent des liants qui s’usent à la même vitesse que le diamant et donc sans besoin d’affutage.

L’affutage est un réel problème dans le cas des perceuses automatiques.

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From bank to glazing

 

Article by Jean Marc Corset, Signed Lausanne

 

Eva Nagy speaks of "chance". But all the same: going from the banking profession to the glazier is not commonplace. Of course, there is this family business that did not interest his brothers. She did not mind to make her professional career, especially since it is defined as a "manual". When one visits his workshop-deposit located just below the forest of Sauvabelin, near Lausanne, one understands better its choice. Because his work is more than the work of the independent craftsman as the entrepreneur focused on management. A way of doing that seems to fit well with his personality.

E. Nagy Sàrl, general glazing and mirrors, is certainly only three years old in this legal form. But she has been doing this business in Switzerland for thirty-eight years. Eva Nagy was apprenticed to SBS - the three-key bank that merged with UBS - as a business management employee. But she quickly changes direction when the small business of her parents grows and lacks arms. She will then make a glazier's CFC.

discrimination

Novice in the business, the young woman discovers an environment that is not soft with women, especially during construction appointments. "Male colleagues were very discriminating, some wanted to put the woman back home." She assumes his feminist side, believing that these attacks are due to advances in equality that are poorly experienced by some. Now that she "has experience and is taken seriously," she says she has no trouble.

She does not say as much about the vocational training of apprentices glaziers, which she knows well, and where she has recommenced the teaching of technical branches as an expert in glassmaking techniques. Despite her experience, the 59-year-old CEO now feels this generational conflict as a real socio-cultural gap. Like many teachers and parents of teenagers, she sees how easy it is to understand the reasons for this intergenerational phenomenon and apply the right recipes.

That's why, at Pavement 79, she is not uncomfortable managing her box independently, relying on only one employee. No doubt a second soon. In her office, she records the orders, delegates a part of them and takes care herself of many works. Custom pieces most of the time, because the house E. Nagy is now mainly replacing glass.

Rapid interventions

In his father's time, the company counted up to ten employees. But with the crisis of the 1990s in building and construction, we had to make choices. "I told him it did not interest me to work big. I wanted to continue to make glass replacement locally. Since we had a loyal clientele, we did not feel the crisis. "The company has thus gradually reduced its size to what it is today, focusing on its niche business. Its strength: be very reactive to the needs of customers, individuals and managers, and be able to intervene very quickly.

Conversely, and necessarily according to her choice, she has not benefited from the real estate boom in recent years. But she does not complain. She wants to keep time for her hobbies: today sewing and pottery, formerly sculpture and painting, as evidenced by a part of the workshop where once were also framed paintings. Henceforth, for her, came the time for reflection on her succession. Without children, she thinks about ceasing her activity or handing over the business. And why not, possibly, accompany a buyer?

Meeting at the barracks

It is true that Nagy is also the story of his parents, over 80 years old and still alive. That of two Hungarian refugees who fled their country after the Budapest uprising against the communist regime and the Soviet tutelage. Bertalan, the glazier who came from the capital, met his future wife, Anna, from a region close to the Austrian border, at the barracks of La Pontaise.

In 1964, the year of the National Expo, the glazier starts his own business and both create their business at Avenue du Mont-Blanc, near the Comptoir. In 1979, they bought the pavement road building and its depot, which allowed them to have a few specialized machines and a nice stock of glasses of all kinds, big and small, and mirrors. We see many with reliefs or prints, and vintage colors that remind us of the windows of old farms or the decorations of villas of the 1960s.

The company processes safety glass,