Glass pastes are made by homogeneously dispersing powder glass upon the vehicle.

( Vehicle = Solvent + Binder )

1. Rolling

Rolling is the process of recovering changes in the storage and transportation process of Paste.

Rolling aims to improve the dispersion of Paste.

When rolling to PLANETARY MIXER, it is recommended that the working time be within 3 minutes.
(to avoid centrifugal separation)

-	Standard	Tolerance	Remarks
Environment	23℃ / Humidity : 60%	20～26℃ / Humidity : 50～65%	-
Rolling Condition	60 RPM	60 ~ 100 RPM	Please start 24 hours before use.

2. Printing

The paste for printing is prepared by adding vehicle to the powder glass and mixing them well.

The vehicle is obtained by dissolving a low molecular weight acrylic resin in terpineol.

The paste obtained is printed on glass parts by screen printing or dispenser.

Printing and drying are repeated in order to increase the glass thickness of the film layer.

3. Leveling

In order to achieve a smooth surface, the prints are leveled at room temperature for 5 to 10 minutes.

4. Drying

The Prints are dried at a temperature of 170 to 190℃ for 30 minutes.

5. Pre-Bake

The prints are fired using a belt furnace or a batch furnace.

A heating rate of 5 to 10°C/min. is recommended for burning out the organic materials in the paste.

6. Curing

Curing is carried out in either an air or a nitrogen atmosphere.

7. Cooling

A suitable cooling rate is 15 to 20°C/min. to prevent the substrate and the glassy film from thermal cracking.

8. Sealing

The sealing of glass can be fired using heat and laser.

In the case of heat sealing, please seal at Tw temperature.

[ CAUTION ]

• It is necessary to store the paste in a cool, dark place to prevent deterioration.

• The paste, stored for a long time, needs to be stirred well with a stainless-steel spatula before use.

• Adjust viscosity as necessary.

• Vapor from the paste is hazardous to the health. Be sure printing worksite is adequately ventilated.

Paste Application Example

Polishing Less Glass Molding