LF/WF-SERIES HEAVY METAL FREE GLASS ENAMELS FOR FLAT TEMPERED GLASS

Transcription

1 LF/WF-SERIES HEAVY METAL FREE GLASS ENAMELS FOR FLAT TEMPERED GLASS Tel: +86 (0) Fax: +86 (0) Web: 1 / 5

2 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 Silk Screen printing Roller coating Oil based paste LF V Water based paste WF V V 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) Tel: +86 (0) Fax: +86 (0) Web: 2 / 5

3 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: White Pink (Cd) Sky blue Black Red (Cd) Cobalt blue Etch Iron red Green Pearl gold Yellow Turquoise green Pearl silver Lemon (Cd) Nut brown Pearl copper Orange (Cd) Red brown Substrate: Flat glass Printing Conditions: Recommended mesh size when pasted up in I.R. drying medium is T ( ) 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~ K -1. Resistance: --Acid resistance test results: -3.7% HCL, 15 minutes at room temperature assessment according to ASTM C , Grade: 2 to 3-10% Citric acid, 15 minutes at room temperature assessment according to ASTM C , Grade: 1 to 2 Tel: +86 (0) Fax: +86 (0) Web: 3 / 5

4 -4% Acetic acid, 24 hours at room temperature assessment according to ASTM C , Grade: 2 to 3 --Alkaline resistance test results: -10% Sodium hydroxide, 2 hours at 95 assessment according to ASTM norm C result: <1.0 mg /cm 2 Presentation: - paste, powder - oil-based, water-based - I.R. drying screen printing /roller coating Belleview 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: Firing Time: seconds (Depending on glass thickness) Peak Glass Temperature: 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: Tel: +86 (0) Fax: +86 (0) Web: 4 / 5

5 The LF/WF enamels recommended Media -Oil-Based Screening Media are composed by pine-oil, resins, waxes, wetting agents 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 reasons. 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. Tel: +86 (0) Fax: +86 (0) Web: 5 / 5