Melamine Panelz Surface Properties
|
TEST |
STANDARD |
DESCRIPTION |
GRADING |
| Resistance to surface wear |
 |
|
EN438-2:6 |
A 100 x 100 mm specimen is subjected to surface wear by a Taber Abraser. |
Depending on type of prints, average wear resistance is <100mg/ 100 rev. weight loss> |
| Resistance to dry heat at 180°C |
 |
|
EN438-2:8 |
A vessel containing oil at 180°C is placed on the surface of test specimen. |
Grade: Not Lower than 4 |
Resistance to cracking |
 |
|
EN438-2:13 |
Specimen is placed in oven at 70°C for 24 hours. |
Grade: Not Lower than 4 |
| Resistance to stain |
 |
|
EN438-2:15 |
Surface of specimen is subjected to various staining materials for 16hours. Staining materials: Coffee, tea, milk, soya sauce, detergent, acetone, etc. |
Grade: Not Lower than 4 |
| Resistance to cigarette burn |
 |
|
EN438-2:18 |
Surface of specimen is subjected to cigarette burn. |
Slight brownish color which can be wiped off with ethnol.
Grade: Not Lower than 4 |
| Resistance to steam |
 |
|
EN438-2:24 |
Surface of specimen is subjected to for 1 hour to steam. Dry and grade. |
Grade: Not Lower than 4 |
| 24 hour Acid test |
 |
|
Internal |
Surface of specimen is exposed to 0.2n Hydrochloride acid for 24 hours. Wash off with water and grade. |
Grade: Not Lower than 3 |
| Porosity |
 |
|
Internal |
Shoe Polish is layed on the surface of specimen. Clean off with ethanol and grade. |
No to very less graphite stain is observed under stereoscope with 15x magnification.
Grade: Not Lower than 3 |
| Scale : |
Rating 5: |
No visible change |
| |
Rating 4: |
Slight Change of gloss and/or colour, only visible at certain viewing angles |
| |
Rating 3: |
Moderate change of gloss/or colour |
| |
Rating 2: |
Marked change of gloss and/or colour |
| |
Rating 1: |
Blistering and/or delamination |
|
