1: Seal the silicone vacuum bag. Before the silicone bag shelf being pushed into the oven, start the vacuum pump to vacuum for 10 minutes at room temperature. See “Step1”. The purpose is to check whether the silicone bag is leaking out or not. And the vacuum value should at least be set 0.095Mpa.

2: Push the silicone bag shelf into the oven, then set the parameters of temperature and time. Start increasing the temperature up to 70℃ at a rate of 2-3℃/min slowly. See “Step2”. Keep the temperature at 70℃ for 40minutes. See “Step3”.

(Notes: following the instructions that the EVA FILM MANUFACTURERS give to you, the parameters may be different for different manufacturers). Because it takes time for the heat transfer through the silicone bag, so the temperature the detector gets may be different from the real temperature of the laminated glass.

3: Go on increasing the temperature up to 135℃ at a rate of 2-3℃/min slowly. See “Step4”. Keep the temperature at 135℃ for 35minutes. See “Step5” curing phase.

4: Stop heating. Wait till the temperature is lower than 70℃, then open the oven door and pull out the silicone bag shelf to help to cool. But don’t open the silicone bag or let cold water touch the laminated glass.

5: After the temperature is lower than 45℃, now you can open the silicone bag and check the laminated glass.

1. Application

EVA film product is a kind of interlayer adhesive film for glass lamination for architecture and decoration. It could be used with different kinds of inserts and PET, resulting in creative special designs with high decorative value. In any case – with or out inserts – glass processor needs to find out optimal laminating conditions case by case using his own equipment.

2. Expiration date

Every EVA film roll received, could be used within 9 months after the production date marked on the plastic bag of the roll. Keep the label and avoid using the material after the expiration date cause performances decrease with time which could lead to a lack of adhesion.

3. Storage conditions

EVA hot melt adhesive sheet must be stored inside the building in its original packing at temperatures between 0 and 30°C and humidity under 50%. Storage place must be not exposed to direct sunlight, heat, dust, chemical contamination (also in the air). EVA adhesive film must be kept away from heating units, hot tools etc. Opened rolls must be resealed if not in use. In case the rolls are stored on the feeder stand in the workshop, they must be covered by polyethylene film to protect from dust until using.

Precautions:

(1). Keep EVA adhesive film far from the fire. It can burn when exposed to direct fire. Do not burn the waste!

(2). Do not allow EVA films to be contaminated with oils. Oily material does not reach adhesion.

(3). Do not allow EVA glass film to be contaminated with any solvents. Adhesive properties could be lost.

4. Handling

Do not press, stick, or bend the rolls! Use proper jigs/stoppers/lifters while storing or handling EVA adhesive film in order to avoid personal injury or damage. Handle gently with care.

* We recommend to remove and do not use about 1M from the beginning and end of the roll, where the material has been in long contact with other material lately.

5. Preparing glass compositions

The glass must be clean and dry. Thorough cleaning of the glass is an essential requirement for good adhesion. Washing equipment must be kept clean from grease and dust.

Never touch EVA adhesive film with naked hands or dirty fabric gloves. Use a clean sharp knife to cut the excessive film around edges, keeping fingers from injury. Seal the edges by high-temperature tape to avoid slipping and displacement. A proper type of tape means to allow air evacuation effectively.

Do not edge or drill ready laminated glass within 24 hours after taking out from the oven.

6. Environment protection

Dispose of EVA laminate film waste and unused lengths in conformity with the laws and regulations concerning industrial waste in your country.