| Pantech Panel Technologies (H.K.) LTD. | |
| A Subsidiary Company of Pantech
Holdings LTD. |
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| Q.C. Test PANTECH Q.C. TESTING PROCEDURE Pantech panels are subjected to stringent quality assurance testing procedure to maintain a high and consistent quality. All our tests are performed in conformation to AAMA 605.2-90. The following paragraphs summarize our testing procedure. 1. Pre-treatment 1.1 The pre-treatment system is tested twice a week to ensure that the chemical concentration and weight of chemical coating are within the specified limits. This will ensure proper pre-treatment of substrate metal before painting. 2. Paint Line 2.1 Every piece of panel/extrusion throughout the production run is tested to ensure that the minimum dry film thickness is maintained and the surface appearance is smooth and free of blemishes. 2.2 For every 20 pieces of panels, a 200 rub test with M.E.K. (Methly Ethyl Ketone) and dry cross hatch test is performed on the panel edge. 3. Lab Test For each production run, three pieces of samples (3" x 8") are sprayed at random with the panels, one in primer coat only and two with colour coat. 3.1 Dry cross hatch test and 80 rub test with xylene are performed on the sample coated with primer only. 3.2 The following tests are conducted on the two samples with colour coating. - Muriatic Acid test - Dry Cross Hatch test - Boiling Water test - M.E.K. 200 Rub test - Dry Film Hardness test - Impact test 4. Paint Supplier's Lab Test For each batch of paint, eight pieces of random samples (3" x 8") are sent to paint supplier's for further testing in compliance with warranty agreement.   |
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TEST CHARACTERISTIC |
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| Film Characteristic |
AAMA #605* Paragraph Number and Performance Requirements |
| Colours Available | |
| Dry Film Thickness | 4.3 1.2 mils minimum (2
coats) 1.6 mils minimum (3 coats) |
| Colour Uniformity | 7.1 visually controlled |
| 60¢X Gloss, ASTM D-523 | 7.2 low, medium, and high |
| Hardness - Berol Eagle Turquoise Pencil |
7.3 F minimum |
| Adhesion-Crosshatch 1/16" Wet and Dry |
7.4 no removal |
| Direct Impact 1/10" Distortion |
7.5 no removal |
| Abrasion Resistance ASTM D-968 |
7.6 Abrasion Coefficient Value 20 min. |
| Acid Resistance 10% Muriatic Acid Spot Test |
7.7 15 minutes - no attack |
| Alkali Resistance Mortar Pat Test | 7.7 24 hours - no attack |
| Detergent Resistance (3%) Immersion @100*F |
7.7 72 hours - no attack |
| Resistance to Acid Pollutants | 7.7 Max. 5^E Units (Hunter) color change |
| Salt Spray Resistance 5% Salt @ 100*F |
7.8 1/16" max.
under-cutting 3000 hours exposure |
| Humidity Resistance 100% RH @ 100*F |
7.8 Few #8 blisters max. 3000 hours exposure |
| Weathering - Color RetentionASTM D-2244 | 7.9 Max. 5^E Units (Hunter)
Color Change 5 yrs., 45¢X South Florida |
| Chalk Resistance ASTM D-659 |
7.9 Max. Rating 8, 5 yrs. 45¢X South Florida |
| Erosion | 7.9 Max. 10% loss - 5 yrs. 45¢X South Florida |
| Compatibility with Commercial Sealants and Glazing Putties |
7.10 Consult sealant manufacturer
for recommendations |
| *American Architectural Manufacturers Association "Voluntary Specification for High Performance Organic Coatings on Architectural Extrusions and Panels. " Publication No AAMA 605.2-90 | |
COMPARATIVE PERFORMANCE TESTING ON COLOUR RESISTANCE |
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After 160 months of continuous exposure to a subtropical environment at a 45 angle facing south, a metal panel with a KYNAR 500 finish shows very little change even when examined at 1000 times magnification with a scanning electron microscope. |
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160 Month Exposure
1000X
 
 
 
 
 
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