LF/WF Series

Heavy metal (lead, cadmium, mercury, chromium VI) free glass enamels for tempering and heat strength.

Substrate:

Architectural & Home Appliance& Furniture glass

Features:

Lithium free

High opacity

Glossy appearance

Good durability

Intermixable

Availability:

The LF /WF series can be provided in various application related media

Durability:

Standard international flat glass resistance tests

Chemical resistance (ASTM C724-91)

Mechanical resistance (sclerometer)

Sulphur dioxide (DIN 50018)

UV light (xeno 1200)

Mechanical strength (DIN 18516)

Description

Heavy metal free glass enamels for toughening and heat strengthening. Borosilicate frit with added metal oxide pigments. All standard colors are intermixable.

Color:

Color shades available:

Subs trate:

Flat glass

Printing Conditions:

Recommended mesh size when pasted up in I.R. drying medium is 43-90 T (110-300) mesh). All pastes will be supplied in the standard powder to medium radio and can be diluted with the appropriate thinner, which is indicated on the Technical Data Sheet of the relevant medium.

Expansion of Thermal Coefficient (CTE)

Average CTE measured on the basic frit system is 85~95 10-7K-1.

Resistance:

--Acid resistance test results:

-3.7% HCL, 15 minutes at room temperature assessment according to ASTM C 724-91,

Grade: 2 to 3

-10% Citric acid, 15 minutes at room temperature assessment according to ASTM C 724-91,

Grade: 1 to 2

-4% Acetic acid, 24 hours at room temperature assessment according to ASTM C 724-91,

Grade: 2 to 3

--Alkaline resistance test results:

-10% Sodium

hydroxide, 2 hours at 95℃ assessment according to ASTM norm C1203-91

result: < 1.0 mg/cm₂

Presentation:

paste, powder

oil-based, water-based

I.R. drying screen printing /roller coating

Belle view can provide mixing formulations for many popular RAL& Pantone colors. However, due to application and glass variables through tests should be made under local manufacturing conditions before commencing full production.

Firing

The LF /WF series can be fired through most conventional tempering and heat strengthening cycles.

Furnace Temperature: 600-700℃

Firing Time: 100-300 seconds (Depending on glass thickness)

Peak Glass Temperature: 630-650℃

The glossy

level can vary slightly depending on firing time and temperature.

Higher Temperature: More Glossy

Longer Firing: More Glossy

While the colors are stable across a wide firing range the burn-out of organic media can create a destabilizing chemical environment. This can be prevented by providing adequate ventilation to ensure an oxygen rich environment is maintained within the furnace.

Medium System:

The LF/WF enamels recommended Media

-Oil-Based Screening Media are composed by pine-oil, resins, waxes, wetting agen..

SD-11:

slow-drying medium used for screen painting and for tempered process. -Water Based Screening Media are composed by Carbohydrate, resins, wetting agents..

WS-88:

slow-drying medium used for screen painting and for tempered process.

WS-91:

slow-drying

medium used for roller coating and for tempered process.

Heavy Metal Free

All industries, including those that the glass industry supplies, are moving towards the elimination of heavy metals from products and processes.

The demand for heavy metal free is being generated from a number of sources for a variety of reas ons.

Improve Health and Safety in the workplace.

Reduce the cost of heavy metal waste disposal for glass decorators.

Create consumer satisfaction with “Green” glass products.

Remove heavy metals from waste streams when glass is eventually disposed of.

Storage:

it is recommended that the product is stored in dry surroundings at room temperature (20-25℃) and is not exposed to large temperature shocks

Stability:

paste: 12 months after production date (when stored correctly)

Health & Safety: Good industrial hygiene and work practices should be adhered to when handling these products. For detailed health and safety requirements, please consult the appropriate Material Safety Data Sheet.