Adhesive Strength Between EVA Glass Interlayer Film and Glass Surface

Adhesive Strength Between EVA Glass Interlayer Film and Glass Surface

Importance:
The adhesive strength of EVA glass interlayer film is very important for laminated glass. The adhesion will affect the safety of laminated glass and the delamination of laminated glass.
Following factors will influence the adhesion of EVA glass interlayer film:

1-The type of EVA glass interlayer film
Generally speaking, the super-transparent EVA glass interlayer film is stronger in adhesion than the normal transparent EVA glass interlayer film. The outdoor type EVA glass interlayer film is stronger in adhesion than the indoor decoration type of EVA glass interlayer film.

2-The manufacturer of the EVA glass interlayer film
Because different EVA glass interlayer film manufacturer has different formula of producing EVA glass interlayer film. So the adhesion of the EVA glass interlayer film will be different.

3-Heating temperature and time of the EVA glass interlayer film
When laminating the EVA glass interlayer film, the heating temperature and the holding time will affect the cross link reaction and coupling reaction, which will lead to the adhesive strength of the EVA glass interlayer film.

4-The heating time of laminating EVA glass interlayer film
The heating time must be long enough for the cross link reaction and coupling reaction to be fulfilled completely.

5-The storage of the EVA glass interlayer film
If you open the package of the EVA glass interlayer film, then don’t use up and not repacked, the left EVA glass interlayer film may absorb some moisture, which will do harm to the adhesion strength.
If the EVA glass interlayer film is expired (beyond the self life), the adhesion of EVA glass interlayer film may be declined.
Please repack the unfinished roll well to avoid dust and moisture. Make sure you use the EVA glass interlayer film within the self life, and store the EVA glass interlayer film in good condition, and following the “first in first out” rule of storage.

CNC Glass Interlayer
www.cncglass.com
www.c-n-c.com
Mail: [email protected] [email protected]
Skype: Cnext365
Phone: 0086 15013829504
1-Super clear eva glass interlayer film, for both indoor and outdoor laminated glass application;
2-White eva glass interlayer film, for both indoor and outdoor laminated glass application;
3-Thermal cutter for trimming laminated glass edges overflowed remains;
4-Green tape for fixing laminated glass, high temperature resistance;

Attentions for Edging Laminated Glass With EVA Glass Interlayer Film

Attentions for Edging Laminated Glass With EVA Glass Interlayer Film
By Peter Lin
Avoid Leaking of EVA Film inside Laminated Glass
The principle of making laminated glass is heating and vacuuming (pressing the glass to squeeze out the air).
And when heating ,the EVA Film melt into liquid and the EVA film melt index is higher than PVB Film. So when vacuuming (the pre-laminated glass get the pressure), the EVA Film near the edges of the pre-laminated glass will be leaking out.
And if the EVA Film is leaking out too much, the edges of the laminated glass may have bubbles around.
There are two ways to solve this problem:
(1) -Use the green tape to seal the pre-laminated glass, but make sure you make some small holes on the green tape to help vacuuming.
(2)-If you make small laminated glass, you can put some wood bars surrounding the pre laminated glass. The surrounding woods should be as high as the pre-laminated glass. Which can make sure that the pressure is even on the pre-laminated glass.

Cooling the Laminated Glass after Heating
If you get the laminated glass out of the silicone vacuum bag too early, the temperature of the laminated glass is still higher than the room temperature, if the balance is too much, the laminated glass may get burst, or there may be some bubbles around the laminated glass edges.
In summer, if the room temperature is higher, you can use fan to help cooling the glass.
But anyway, don’t stop vacuuming until the temperature of laminated glass is close to the room temperature.

Attentions for Edging Laminated Glass With EVA Film
1-Don’t edge the laminated glass until the laminated glass with EVA Film has been cooled for 24 hours. Because if you edging too early may cause the delamination in the edges of EVA laminated glass.
2-It’s better if you can edging the glasses before laminating with EVA Film, then you don’t have to edge the EVA laminated glass after heating.
3- If you laminated with some decorative inserts inside the glass, and the decorative inserts is easy to absorb water, then you should edging the glasses before laminating with EVA Film. Because if you have to edge after heating, the decorative inserts may absorb water and lead to the delamination.
4-Please use the gentle grinding wheel to edge the EVA laminated glass

First in first out:RULE OF STORAGE OF EVA FILM
When we talking about storage of EVA Film.
Most EVA Film manufacturers will guarantee that self life of EVA Film for laminated glass is 6 months to 1 years.
So when store the EVA Film, please remember “first in first out” rule.
Make sure you use the EVA film you order earlier.
And also make sure you use the EVA Film during the self life period.
Because after the EVA FILM expired, maybe the adhesive strength, impact strength or transparency will be declined.

CNC Glass Interlayer
www.cncglass.com www.c-n-c.com
[email protected] [email protected]
Product 1]Super Clear EVA Film for safety laminated glass, both indoor and outdoor application;
Product 2]White EVA Film for safety laminated glass, both indoor and outdoor application;
Product 3]Green Tape for fixing pre-laminated glass glazing, high temperature resistance;
Product 4] EVA Thermal Cutter for trimming EVA film safety laminated glass edges overflowed remains

Delamination of Eva Interlayer Film Laminated Glass

Delamination of Eva Interlayer Film Laminated Glass

By Peter Lin

DE-LAMINATION:

1-The heating temperature is not high enough or the heating time is not long enough for the (GLASS LAMINATING) EVA INTERLAYER FILM to melt and cross-link react totally, so the cross link reaction is not completely finished.
For this reason, please increase the heating temperature or prolong heating time of laminating.

2-The EVA INTERLAYER FILM (glass laminating) is out of the shelf life, most EVA INTERLAYER FILM (glass laminating)’s shelf life is about one year or longer. Please use the EVA INTERLAYER FILM (glass laminating) within the shelf life. Yes, different EVA INTERLAYER FILM (glass laminating) manufacturers may have different shelf life of the EVA INTERLAYER FILM (glass laminating).

3-Maybe it’s the problem of the quality of the EVA INTERLAYER FILM (glass laminating). Please do some small sample test, before your mass production.

4-The moisture of the glass or EVA INTERLAYER FILM (glass laminating) is too much. EVA INTERLAYER FILM (glass laminating) are less sensitive to moisture, compared to PVB FILM, but if the moisture is too high, it will do harm to the adhesion of EVA INTERLAYER FILM (glass laminating). Please dry glasses and store EVA INTERLAYER FILM (glass laminating) in good way.

5-There is some organic substance (Oil) on the surface of glasses. For example oily substance will also do harm to the adhesion of EVA INTERLAYER FILM (glass laminating).
Please clean the glasses if necessary. You can use clean water, industrial alcohol, Acetone to clean the glasses.

6-When laminated with the painted papers (like PP, PVC), the printing ink is too much and not being dried.
Please dry the printing papers first before laminating with glasses and EVA INTERLAYER FILM (glass laminating).

7-If you found the de-lamination is happening in the edges of the laminated glass, here is why: Maybe the workers touch the edges of the glasses with bare hands, and there are oily substance on the fingers, which will do harm to the adhesion of the EVA INTERLAYER FILM (glass laminating).Please ask your worker to wear gloves. Maybe its summer, and your worker work very hard, and their hands are sweaty. And the sweat will do harm to the EVA INTERLAYER FILM (glass laminating).

SELF-EXPOSIING:

1-The laminated glass is cooling too fast. Please do not open the oven door to help cooling after the temperature of the laminated glass is lower than 75 degrees.

2-Please avoid the hot laminated glass touching with the cold water.

3-Put some wood blocks between the laminated glasses to make the cooling is well-proportioned.

4-The quality of the glass is not good, which are easy to expose.

5-The EVA INTERLAYER FILM (glass laminating) is not eliminated the internal stress. Good quality EVA INTERLAYER FILM (glass laminating) will be eliminated the internal stress to make the EVA INTERLAYER FILM (glass laminating) less contracting.
If the EVA INTERLAYER FILM (glass laminating) are not eliminated the internal stress, then when laminating the glass with EVA INTERLAYER FILM (glass laminating), the EVA INTERLAYER FILM (glass laminating)’s internal stress would try to contract to its original state and cause the laminated glass to expose.

6-The silicon vacuum bag is not clean, which means maybe some block inside the silicon vacuum bag. So when the pre- laminated glass on the block and vacuuming is working, the pressure would break the laminated glass. So please clean the silicone vacuum bag before you lay down the pre-laminated glass.

CNC Glass Interlayer
www.cncglass.com
www.c-n-c.com
Mail: [email protected] [email protected]
Skype: Cnext365
Phone: 0086 15013829504
1-Super clear eva glass interlayer film, for both indoor and outdoor laminated glass application;
Super Clear EVA Film for Massive Lamination
EVAFORCE SUPER+
*Super Clear EVA Film for Massive Lamination
*Massive,Largest sold quantity in all EVA films
*Great performance with affordable price
*Aim for architectural safety laminated glass
*Applied both indoor and outdoor
*Replacing PVB Film

Super Clear EVA Film for Tempered Curved Glazing
EVAFORCE® EXTREME
*Super Clear EVA Film for Tempered Curved Glazing
*Less overflowing during vacuuming heating
*Strengthened safety mechanical properties
*Recommended for extreme environments, safety tempered glazing or curved glass laminating
*Applied both Indoor and Outdoor
*Replacing PVB Film

Super Clear EVA Film for Graphic Insertions
EVAFORCE® LOW80-120
*Super Clear EVA Film for Graphic Insertions
*Laminating both at 80°C and at 130°C
*Protect the insertions from above 100°C

2-White eva glass interlayer film, for both indoor and outdoor laminated glass application;
Milky White/White Opaque EVA Film
0% Visible Light Transmittance

Sandblasting White/White Translucent EVA Interlayer Film
65% Visible Light Transmittance

Black Opaque EVA Interlayer Film
0% Visible Light Transmittance

Super Milky White/Super White Opaque EVA Interlayer Film
0% Visible Light Transmittance
Pure in White Color
Amazing Visual Effect

Arctic Snow White EVA Interlayer Film
78% Visible Light Transmittance
Exterior and Interior Application
Amazing Visual Effect

Cool Jade White/Cool Acid White EVA Interlayer Film
81% Visible Light Transmittance
Exterior and Interior Application
Amazing Visual Effect
3-Thermal cutter for trimming laminated glass edges overflowed remains;
4-Green tape for fixing laminated glass, high temperature resistance;

10 Things of Laminated Glass Safety Glazing with EVA Interlayer Film

10 Things of Laminated Glass Safety Glazing with EVA Interlayer Film

By Peter Lin

1-The thicker laminated glass is more strengthen than the thinner laminated glass.

2-More layers laminated glass(glass+EVA interlayer+glass+EVA interlayer+glass+EVA interlayer….+glass+EVA interlayer+glass) is more strengthen than the two layers laminated glass.

3-Laminated glass made of semi-tempered glass is better in impact resistance than the laminated glass made of full tempered glass or float glass.

4-Laminated glass with thicker Ethylene Vinyl Acetate EVA Glass Interlayer Film (0.76mm)will be stronger than the same laminated glass with thinner EVA Glass Interlayer Film(0.38mm).

5-If you want to seal the edges of laminated glass, make sure the glass sealant is friendly to the EVA Glass Interlayer Film. Use neutral sealant (DOW CORNING 1199, 799, 982, 1200,7091) to fix it.

6-Bullet-proof laminated glass or explosion-proof glass can not be laminated with tempered glass as basic sheet.

7-Point structure of glass should be strengthened.

8-For safety reason, it’s better to use laminated semi-tempered glass for Sky-light glass( but not as floor).

9-The pallets of broken laminated tempered glass with EVA Interlayer Film may be bigger than the pallets of broken single tempered glass.

10-The clean of the basic glass and the heat control in the combination procedure of laminated glass are the key factors for the quality and useful life of laminated glass.

CNC Glass Interlayer
www.cncglass.com
www.c-n-c.com
Mail: [email protected] [email protected]
Skype: Cnext365
Phone: 0086 15013829504
1-Super clear eva glass interlayer film, for both indoor and outdoor laminated glass application;
2-White eva glass interlayer film, for both indoor and outdoor laminated glass application;
3-Thermal cutter for trimming laminated glass edges overflowed remains;
4-Green tape for fixing laminated glass, high temperature resistance;