EVA Selection

Suitable thickness of EVA interlayer shall be selected according to different decorative design films. EVA with thickness 0.25mm is generally used for thin design film. Thicker EVA, say, 0.38mm would be better for encapsulation of thicker design film. If necessary, multilayers of EVA interlayer could be piled up providing sufficient enough EVA materials for proper encapsulation.

Glass Seilection

Glass Flatness
Glass should be flat enough. If glass is not flat enough, thicker EVA or multilayers of EVA interlayer are recommended. More attention should be pay with when it is tempered glass which could be wavy.

Glass Thickness
If it is unnecessary, glass with different thickness should not be loaded within same batch, especially when the thickness different is great.

Glass Edge
If possible, glass edges should be polished. Non-polish glass edge would lead to easy wear and tear of silicon pad.

Glass Cleanliness
Glass should be cleaned. If cutting lubricant or oil is used for glass cutting, make sure lubricate or oil are removed thoroughly. If glass is cleaned with agents such as alcohol or acetone, allows agents to evaporate thoroughly before cover the glass with interlayer films.

TIPS

Proper Vacuum

Keep vacuum value at -0.095 MPa at steady status for 2-5mins. Make sure all vacuum pipes and tubes are well connected with no air leaking.

Cutting

Glass and inserts material cutting Cut the EVA film and decorative materials in the same size as glass ,or may cause bubble.

Loading

Putting overlapped into silicone bag Keep 5-10mm place between each other as airway.

Cooling

Extra electric fan is recommended to help boost cooling when open the oven door and take out the glass , to make sure the good transparency of glass .

Well-Preserved Silicon Pads

Make sure vacuum silicon pads, vacuum bags or vacuum rings are in good shape and well preserved. No holes are allowed. If there is crack, it should be mended before it grows larger.

Glass Edging & Polishing

If laminated glass is required to further edging and polishing, It is recommended to process at least 24 hours after glass is removed from oven.Or it may lead to degumming or adhesion decreased.

Parameters Vary In EVA Thickness

When EVA melted in between two pieces of glass during heating, thick EVA interlayer, for instance, 0.76mm flows faster than 0.38mm EVA. Temperature and timing should be slightly adjusted for adequate processing parameters.

The perfect effect of Glass lamination depends on good quality  EVA film / glass ,professional lamination machine,  as well as skilled  processing workers .  If you have any questions or suggestion,pls contact us any time !

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