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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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Miroiterie & Carpentry Aunis

Renamed Miroiterie & Carpentry Aunis, the company located in Lagord (17) near La Rochelle, was inaugurated on November 15 with a new logo, a new visual identity, a new website and a new leader that we have interviewed at the end of his first day of recovery in early October.

Journey of an entrepreneur of the mirror-joinery

" I am happy ; it's going well and I'm in my element "congratulates Dorothée Leneuf-Blaise at the end of her first day of recovery. In the miroiterie for ten years, the new leader defines herself as "atypical". After a master's degree in economics and ten years in an accounting firm, she joined GBM, a manufacturer of Cekal-certified insulating glass units, PVC joiners from the Rehau range and Technal certified aluminum manufacturer in Limoges (87). She will be the administrative and financial director for three years.

"After the judicial liquidation of GBM we took over the company in the form of cooperative, with colleagues who appointed me manager," she explains. GBM had a turnover of four million euros with 40 employees in 2017, but after five years as head of the company, it resigned, perhaps a bit cramped with the decision-making procedures inherent to S.C.O.P. The entrepreneur then embarked on an e-commerce project in the miroiterie. Employee director of the company, the relations with the shareholders do not leave him the decision space that it expected. "In January 2018, I found myself unemployed and I decided to be alone at the helm this time, and to look for a company to take over."

A drumming drive

Originally from New Aquitaine, this region will focus his research. "On the BPI website, there is a business transfer and takeover announcement service. I answered one of them which indicated "joineries aluminum and miroiterie, a true know-how". I sent my resume, signed the confidentiality undertaking; I knew they were at La Rochelle and Aluminiers Charged Technal: it's an image, a commercial force, a technical know-how and I was myself in Limoges, I knew very well the product, the provider. So I visited the miroiterie early May.

The company is not in trouble; taken over 12 years ago, it achieves a turnover of 1.2 million euros with 10 employees but its leaders want to change their life at the dawn of their 40 years. Dorothée Leneuf-Blaise, who has 42, signs an agreement at the beginning of the summer, "the time to set up the structure, to find funding".

Winner of the Réseau Entreprendre, which supports and accompanies it as well as Initiative Charente-Maritime, she was able to benefit from loans and also integrate local networks: "I do not know La Rochelle and a woman who buys a mirror company- carpentry there is not every day so I had to reassure employees as well as my financial and institutional partners that I had come to live in La Rochelle, that I was not there to manage a two days a week, "says the manager.

Give a new impetus to the company

After a phase of observation in the field last September, the roadmap of the new leader is clear: revitalize the company, modernize its image, give it a new impetus. "I presented my roadmap to employees. I presented them with a new logo, a new visual identity, they had an immediate overview of the image I wanted to give to the company. And they are very happy, very active, they got to work right away. The obsession of the employees of a company taken over is to fall on someone who does not know the job. Now I know the miroiterie and the carpentry alu: we immediately spoke the same language, we talked about building sites, suppliers, products, achievements, problems of customers and when we speak the same language it sticks immediately "explains t ' she.

Key objective for the coming year: "rehabilitate the production tool". Purchase premises, equip them with tools and set up a team. From the point of view of hiring a journeyman apprentice, aged 16, has just joined the troops a week after taking office Dorothée Leneuf-Blaise who welcomes it because train and transmit the know-how is part of his ambitions.

Recall that the company Rochelaise manufactures and installs aluminum Technal joinery for a client base of 60% private individuals and develops a business trading and cutting single glazing, replacement of breakage, work mirrors (shower screen, credence etc ... ) for the mirroring part. Its new leader aims for two million euros