5
Set Test Conditions
Selecting test conditions
Select a test condition that is close to the failure point of the material. Increasing the test pressure increases the severity of the
test. The failure point can be found by trial and error, several tests should be carried out using increasing weights until marking of
the substrate and/or deterioration of the coating is visible.
Test pressure -
The weight set provided allows for 3 test pressures:
Pounds / Inch2 (p.s.i.)
kPa Equivalent
Weights
0.5
3.45
None
1.0
6.90
Small
2.0
13.80
Small + Large
•
To select the reported test pressure* press the
+/-
buttons to cycle through the available options (fig 2).
•
*Refer to table for mass required to achieve pressure
.
Sample Preparation
Sample selection
•
Upper sample -
The 50mm diameter sample is typically cut from a sample of printed material. Select an area for testing,
it is usual to test areas that are MOST likely to fail; these include any heavy ink build areas or spot colours.
•
Lower sample -
The lower sample is 115mm in diameter - This can either be another sample of the printed material or
white paper to see clearly see the ink transference.
Using the sample templates
•
Identify the area of the printed sample to be tested.
•
Position the supplied template(s) over the area and carefully cut around the template.
Fig 2
–
Configuration screen
Summary of Contents for RL-A80-005
Page 14: ...14 Certificate of Conformity...