The following question is discussed on LINKEDIN, But I think, why not consider the EVA LAMINATED GLASS. The reasons are: first, the EVA Film can blocked 100% UV radiation; Second, the EVA FILM is stronger in SOUND INSULATION than PVB Film.
Please check the COOLSAFE COMBINED FILM OF  BRIDGESTONE:
http://www.bridgestone.com/corporate/news/2010110501.html

by peter shin  www.cncnext.com

Highest R Value and sound insulation (dB) that glass can achieve
Hello, currently I have a client who want to make a glass skylight and he require a very high R Value and very high sound insulation. Does any body have a reference what is the highest R Value that the glass can achieve?

Any suggestion of what PVB Layer to use for this 2 purpose?

Thank you everyone for comments, inputs and some advice.

The requirement of the R Value is 20 SI, which is I am not sure how to calculate it and if this target is achievable. And was googling to find out some reference of the highest R Value.

Another requirement is they want to put some plantation under the skylight so it need the sun light in to make the plants still growing, but it doesn’t transfer the heat in.

The next question in my mind is how to scientificly measure to prove that the R Value is achieved, since the most logical thinking is when the skylight installed people will complain it is hot. But how do we know that the Glass and the whole system of the skylight is blocking certain value of heat transfer.

For additional notes, that the size of the skylight is about 2000×9000 mm full without segments. So I am thinking it will be dangerous to lift it if we use the insulated glass like DGU or even Triple Glazing Unit, and I tend to go on the laminated glass.

http://www.linkedin.com/groupItem?view=&gid=2023279&type=member&item=77048785&qid=d94c5ac2-3eb3-4242-9245-9bdb0ae8d53f&trk=group_most_popular-0-b-ttl&goback=%2Egmp_2023279

Glass Sealant for EVA Laminated Glass

When install EVA laminated glass, you will need the glass sealant.

There are many kinds of glass sealant. Some of them will do harm to the EVA laminated glass and make it delamination,having bubbles and color changing.

So it’s better you do some test first to make sure the glass sealant is friendly to the EVA laminated glass.

Now we normally introduce you use the neutral glass sealant.

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peter from :

China Ethylene-vinyl acetate EVA Interlayer Film Manufacturer for Safety Architectural Laminated Glass.
China EVA Film for Smart Glass, Privacy Glass, LED Glass etc.
China Solar EVA Film for Solar Panel Encapsulation.
China Switchable Film for Privacy Glass, Smart Glass.
[cnc@cncnext.com / www.cncnext.com / benext77@gmail.com / benext77@hotmail.com) (eva@evafilms.com / www.evafilms.com ]

There are two ways of lamination:

Wet lamination with liquid EVA or other materials.

And Dry lamination with EVA Film or PVB film.

Of course there are advantages and disadvantages of both ways.

For wet lamination with liquid EVA, the most advantage is that it’s easy to process and very fast. And the dis advantage is that the laminated glass made with liquid EVA may be not as strong as laminated glass made with the dry EVA inerlayer film or PVB interlayer film.

The following video shows how to make laminated glass with liquid materials.

The video link is

Uploaded by LISAWILLISHOWES on Nov 2, 2010

Polylaminator Hot pour resin machine for the making of laminated

safety glass products.

Category:

Entertainment

Tags:

Glasslam Windows Doors insulating Laminate resin polimer meter-mixing dispensing polycarbonate laminating acr

License:

Standard YouTube License

Horizontal Coating Machine

Technical Features

1. The most advanced dry pumps and turbo molecular pumps are used, therefore the oil backflow to the vacuum chamber and the pollution of the chamber are eliminated, and the operation is reliable and efficient;

2. An isolation chamber structure is used, which has the perfect effect on gas isolation. Lock valve equipment is arranged between the chambers, to offer more convenience for vacuum integration and single chamber maintenance；

3. A “standardized design of horizontal sinking cover” and also a target-changing cart are used, therefore the target changing, or cleaning is more convenient and rapid;

4. 6 high-power rotating cathodes and 7 planar ones are arranged, for making double-silver Low-E, temperable Low-E and all kinds of solar-control film products;

5. A multi-point optic detecting and monitoring system is equipped for ensuring film quality and product continuity;

6. Separately distributed process gas including Ar, O and N are equipped, 5-segment gas compensation is used for ensuring the uniformity of the products;

7. A high-performance washing machine is equipped, to realize three grades cleaning；

8. High-speed loading and unloading system are equipped, to achieve a high-speed production.

Nano material and vacuum magnetron sputtering technology is adopted in the inline coating machine. A Low-E thin film is deposited on the glass surface by physical vapor deposition (PVD). The Low-E film has greatly increased thermal insulation of the glass through decreasing the semi-sphere emissivity of the coating surface. The coating machine, with optical-mechanical-electrical integration, is applied for large-area flat glass processing field. It can fabricate temperable Low-E and double-silver Low-E products, as well as all kinds of solar-control coated glass.

Shanghai Northglass Coating Technology Industrial Co., LTD，a company of Northglass group，is founded in Nov. 2006. Relying upon the abundant strength of its mother company and class professionals, the company has successfully developed the first commercial inline horizontal coating machine with independent intellectual property rights in China in Dec. 2007. The coating machine was put into production in March 2008.

The company invests RMB 300 million Yuan in establishing R&D and machining bases in Shanghai and Luoyang. Presently, the company has 150 employees; among them over 50 are R&D and managing personnel with intermediate or senior title. It is estimated that more than 5 coating machines will reach the market every year since 2009.

http://en.northglass.com/

Add:No.328,Guanghua Road,Songjiang Science & Technology zone,shanghai

Tel：+86-21-57858711 +86-21-57858611 +86-21-57858601