De-lamination and Expose Solution of Processing Laminated Glass With EVA Film
By Peter
cnc@cncnext.com/ benext77@gmail.com
www.cncnext.com

General View:
I have talked about the Bubbles Solution for Laminated Class with EVA
Film , and today I would like to talk about the other problems you may
face in laminating glass with EVA FILM.
The common problems are: de-lamination and self-exposing of the laminated glass.

De-lamination:

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

2) The EVA FILM is out of the shelf life, most EVA FILM's self life is
about one year or longer. Please use the EVA FILM within the self
life. Yes, different EVA FILM manufacturers may have different self
life for the EVA Film.

Maybe it's the problem of the quality of the EVA FILM. Send some film
samples back to the EVA FILM manufacturer to test the EVA FILM again.

The moisture of the glass or EVA FILM is too much. EVA FILM are less
sensitive to moisture, but if it's too high, it will do harm to the
adhesion of EVA FILM. Please dry glasses and storage EVA FILM in good
way.

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

6) When laminated with the painting 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 FILM.

7) If you found the de-lamination is happening in the edges of the
laminated glass, here is why:
Maybe the workers' hand touch the edges of the glasses, and there are
oily substance in the hand, which will do harm to the adhesion of the
EVA FILM.
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 FILM.


Self-Exposing

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 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 FILMs are not eliminated the internal stress. Good quality
EVA Film will be eliminated the internal stress to make the EVA film
less contracting.

If the EVA Film are not eliminated the internal stress, then when
laminating the glass with EVA Film, the EVA Film's internal stress
would try to contract to its original state and expose the laminated
glass.

) The silicon bag is not clean, which means maybe some block inside
the silicon bag. So when the pre- laminated glass on the block and
vacuuming is working, the pressure would break the laminated glass.


All rights reserved by:
China (Ethylene-vinyl acetate)EVA Interlayer Film Manufacturer for
Safety Laminated Glass, Smart Glass, Privacy Glass, LED Glass, PV
Solar Encapsulationetc.
cnc@cncnext.com / www.cncnext.com
eva@evafilms.com / www.evafilms.com
benext77@gmail.com / benext77@hotmail.com





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UCOLIN SILICONE TECH
(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy
Glass Laminating
(2)-Silicone Sheet for EVA Glass Laminating Machine
(3)-Silicone Bag for PVB Glass Laminating Auto-clave
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(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine
(5)-Silicone Sheet for Wood Door Vacuum Laminating Machine Vacuum
Press Machine Vacuum Filming Machine
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Silicone Bag for Laminated Glass Machine Laminating EVA Interlayer Film
www.Ucolin.com

+EVA Film:
EVA stands for ethylene vinyl acetate, a copolymer resin used in the
production of laminated glass as the interlayer sandwiched between two
pieces of glass. The main function of the interlayer is to stick the
two piece of glass together, in order to make the sandwiched glass
safer and more secure.
EVA Film is made out of macromolecule material and it performs
excellent in bonding strength, heat resistance, cold resistance,
humidity resistance and tensile strength in laminated glass. It has
been partly taking the places of PVB film in laminated safety glass,
laminated art glass, laminated color glass.
EVA film is not adhesive before heating. After heating, it melts and
reacts. In the production of laminated glass with EVA interlayer, no
autoclave, roller press, air bag, or vacuum rubber ring is required.
As EVA interlayer can be processed under normal climatic conditions,
no clean room with climatic control is required. And the producing
machine of laminated glass with EVA Film is less cost and easier to
process.


+Laminated Glass with EVA Film
Laminated Glass with EVA Film is an important kind of laminated glass
in glass industry .The processing principle of EVA laminated glass is
similar to most of the laminated glass . Furthermore, using EVA film
to laminating glass does not require autoclave. All laminating
processing will be finished and completed in one vacuum laminator. EVA
Film for laminated glass has excellent transparency, outstanding
adhesion and aging-resistance (more than 15 years), can be used for
architectural glass, decorative glass with fabric, privacy glass, auto
glass etc.


+EVA Vacuum Glass Laminating Machine is a equipment specially designed
for manufacturing laminated safety and decoration glass with
Ethylene-vinyl acetate EVA Interlayer Film (some kind of the one-step
glass laminating machine can also processing Polyvinyl Butyral PVB
Interlayer Film).






The EVA Vacuum Glass Laminating Machine uses the silicone vacuum bag
to make the pre-laminated glass is heating in the vacuum condition to
guarantee that final laminated glass don't have bubbles.


It's also possible to laminate EVA Interlayer Film with silk, paper,
calligraphy and painting, ultraviolet radiation unilateralism film,
light adjusted film and so on. All kinds of art glass, decorated
glass, privacy glass, safety glass and solar panel can be processed in
the EVA Vacuum Glass Laminating Machine.


Compared to autoclave producing line for Polyvinyl Butyral PVB
Interlayer Film, the EVA Vacuum Glass Laminating Machine is much
easier to operate and less cost to build., and more flexible and
convenient for the designer.


+Silicone Bag for Laminated Glass Machine Laminating EVA Interlayer

+Product features:
Great heat-resistant,
Great aging-resistance ,
Great resistance to EVA
Anti-corrosive,
Environment-friendly,
Long-use life,

+Product specification:
1) Common thickness: 3mm
2) Maximum width:3800mm without any joints
3) Any length
4) Common color: Milky (other color is available for custom)
5) Custom as customers require

All Rights Reserved By UCOLIN SILICONE TECH
(1)-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy
Glass Laminating
(2)-Silicone Sheet for EVA Glass Laminating Machine
(3)-Silicone Bag for PVB Glass Laminating Auto-clave
(4)-Silicone Rubber Sheet for Solar Cell Module Laminating Machine
(5)-Contact Us: uc@ucolin.com / www.ucolin.com
umewe360@gmail.com/ umewe360@hotmail.com