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Bubbles in Middle Safety Laminated Glass of Polyvinyl Butyral PVB Interlayer Film

Bubbles in Middle of Safety Laminated Glass of Polyvinyl Butyral PVB Interlayer Film

By Peter Lin

Reason Possibility 1:
In the procedure of roller exhausting air, it’s too early to seal the edges of the pre-laminated glass, so the air can not be exhausted out completely in the second roller.

Solution:
Adjust the speed and temperature in the pre-laminating procedure, make sure the pre-laminated glass is not sealed before the second roller exhausting air stage. Or adjust the speed of and temperature of the silicone rubber ring, to make sure the air is totally exhausted out.

Reason Possibility 2:
 The Polyvinyl Butyral PVB interlayer film already absorbed too much moisture.

Solution:
Check the moisture of the Polyvinyl Butyral PVB interlayer film, and the humidity of the laminating room and glass surface.

Reason Possibility3:
 The plainness of the tempered glass is not good enough.
Solution:
Choose good quality tempered glass, or use thicker Polyvinyl Butyral PVB interlayer film.

ALL RIGHT RESERVED BY CNC INTERLAYER TECH :
(Product 1. )Ethylene-Vinyl Acetate EVA Interlayer Film for Safety Laminated Glass
(Product 2.) China Solar EVA Film for Solar Panel Encapsulation
(Product 3.) China Smart Switchable Film for Privacy Glass, Smart Glass
(4)Web:www.evafilms.com / www.cncnext.com
(5)Contact Us: cnc@cncnext.com/ eva@evafilms.com /
benext77@hotmail.com /benext77@gmail.com

Howto Test Properties of Glass Laminatining Ethylene-vinyl acetate EVA Interlayer Film

Howto Test Properties of Glass Laminating EVA Interlayer Film

1. Howto Test Properties of Glass LaminatiningEthylene-vinyl acetate EVA Interlayer FilmCreated byChina Ethylene-vinyl acetate EVA Interlayer Film Manufacturerfor Safety Architectural Laminated Glass.

2-IMPORTANT PROPERTIES OF EVA FILM- High tensile strength- Excellent transparency- Outstanding adhesion strength- UV protection- High impact resistance- Good temperature withstanding- Water proof- Humidity durable- Long-term reliable (long-term aging resistance)- Sound barrier
3-Testing tensile strength, pealing strength of EVA Film[Universal Testing Machine]We can use this equipment to test thetensile strength of EVA Film, and also thepeeling strength between the EVA Filmand Glass surface, or between the polymersheet surface and EVA Film.

5. Testing impact resistance of EVA Film[Impact testing Equipment]To test the impact resistance of thelaminated glass made of the EVAFilm samples to be tested.

6. Testing Aging-resistance[UV Radiation Accelerating Aging Tester]Accelerated Aging Tester adopts fluorescentUV light UVA-340 and the water-spray systemin order to imitate the damage of sunlight, rain,humidity etc.The samples is under UV radiation damageand the water spray damage circularly.Thedamage intensity would be more than 1o timesof the damage in the natural environment.The damage is like: fading, changing color,delamination, haze, bubbles, embrittlement ,aging, oxidation etc.

7. Testing heat-resistance, humidity-resistance andweather-resistance of EVA Film[Constant Temperature and Humidity Test]You can test EVA Film under great humidityenvironment or high temperature.And you can also test EVA Film under cold andhot circling environment, like -40degree C for 30minutes and 85 degree C for 30 minutes as acircle

8. Testing Haze of EVA Film[Haze Tester]You can test the haze of thelaminated glass made of EVAFilm, and also thetransmittance of laminatedglass of testing EVA FilmContact Us:cnc@cncnext.com /www.cncnext.com/benext77@gmail.com
9. TESTING gel content determination of cross-linkedEVA Film[Test system of gel content determination ofcross-link reacted EVA Film]To see how many percent of gel content of theEVA Film after laminating heatingprocessed(after cross link reacted)

10. Easy way toTesting Transmission Values ofUV(ultraviolet radiation), Visible Light and Infrared Ray[Laminated Glass Spectrometer]is able to simultaneously measure the TransmissionValues of UV(ultraviolet radiation), Visible Light andInfrared Ray . The Spectrometer is self-contained lightsources and automatic calibration. No man-drivenadjustment is needed. The users only need to plug thepower supply, turn on the switch and put the LaminatedGlass in the opening. Then the measure data wouldappear on the display automatically.

11. Testing UV radiation blacked rate of EVA Film[Spectrophotometer]:Test the UV radiation blacked rateof laminated glass made of testingEVA Film samples. You can testthe blacked rate at different wave-length.

12. Copy Rights
All right reserved byChina Ethylene-vinyl acetate EVA Interlayer Film Manufacturer for Safety ArchitecturalLaminated Glass.China EVA Film for Smart Glass, Privacy Glass, LED Glass etc.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 ]Sponsored byChina Ucolin Glass Lamination Solution Experts:-Silicone Vacuuming Bag for EVA Glass Laminating Machine/Privacy Glass Laminating.-Silicone Rubber Sheet Manufacturer for Solar EVA Photovoltaic Panel Encapsulation.(uc@ucolin.com / www.ucolin.com /umewe360@gmail.com/umewe360@hotmail.com)Contact Us:cnc@cncnext.com /www.cncnext.com/benext77@gmail.com

Storage of Dry Melt adhesive EVA Interlayer Film

Storage of Dry Melt adhesive EVA Interlayer Film

EVA interlayer film is the main row material for producing safety laminated glass, however, the quality of the Dry Melt adhesive EVA Interlayer Film is not the only factor for producing standard safety laminated glass, there are many other factors in close relations with the successful production, such as equipment(laminating stove), producing technique, glass and auxiliary materials, environment and weather condition, worker’s operation skill and responsibility. Therefore, in order to produce strengthened glass and safety laminated glass, operator needs to analyze comprehensive factors and master comprehensive producing skill.
The following operation instruction is concerning the actual application of Dry Melt adhesive EVA Interlayer Film for safety laminated glass:

（1）
EVA interlayer film is usually required to be stored in the storehouse that is ventilative, dry and clean. It should avoid direct radiation from light and heat, and should be prevented from rain, high pressure, outside force collision and scratch from hard article. The temperature in storehouse should not be higher than 32℃, and humidity less than 55%. If the stock of Dry Melt adhesive EVA Interlayer Film is a large quantity, pallet should be put under the Dry Melt adhesive EVA Interlayer Film for ventilation, cooling and anti-moisture. If affected by excessive pressure, heat and moisture, the Dry Melt adhesive EVA Interlayer Film will be self-adhesive and its surface will turn to yellow or red in some degree. And if the Dry Melt adhesive EVA Interlayer Film is affected by moisture in too large size, the adhesion between the Dry Melt adhesive EVA Interlayer Film and glass will be weaker, which will disable the normal application of Dry Melt adhesive EVA Interlayer Film.

（2）
It’s forbidden that the Dry Melt adhesive EVA Interlayer Film for laminated glass is stored in the same warehouse where combustible stuff and explosives are stored. The remaining Dry Melt adhesive EVA Interlayer Film should be re-packed by clear materials, otherwise the static electricity within the EVA film will absorb dust that will contaminate Dry Melt adhesive EVA Interlayer Film and consequently disable the normal use of Dry Melt adhesive EVA Interlayer Film.

（3）
The valid storage period of Dry Melt adhesive EVA Interlayer Film for laminated glass is within 12 months after the Dry Melt adhesive EVA Interlayer Film is produced, so customers have to use old Dry Melt adhesive EVA Interlayer Film firstly and meanwhile store new Dry Melt adhesive EVA Interlayer Film if inventory turnover is needed. We shall not be responsible for the quality of Dry Melt adhesive EVA Interlayer Film that has passed the valid storage period but customer still use it to laminate glass. Or should customers fail to use the Dry Melt adhesive EVA Interlayer Film that has passed the valid storage period, we shall not return or exchange the Dry Melt adhesive EVA Interlayer Film no matter there’s quality problem within the Dry Melt adhesive EVA Interlayer Film or not.

(4)
Please note that, the above information may be out of date due to the innovation or improvements. So if you have doubts, please contact us to confirm.

All rights reserved by CNC GLASS INTERLAYER TECH:
Product 1]CNC-Force EVA INERLAYER FOR ARCHITECTURAL LAMINATED GLASS
eva@evafilms.com
Product 2]CNC-SmartSMART FILM FOR PRIVACY SWITCHABLE GLASS
smartfilm@smartestglass.com
Product 3]CNC-Shield PVB INTERLAYER FOR AUTOMOTIVE WINDSHIELD GLASS
pvb@pvbfilm.net
Web: www.CNCglass.com www.CNCnext.com
Mail: cnc@cncglass.com
benext77@gmail.com