| INTRODUCTION : |
“NOVA” MAKE RESISTANCE TO SURFACE WEAR APPARATUS (ABRASION TESTER) ForDecorative Lamination Sheet (As Per IS 2046:1995)
is specifically designed for Laboratory Testing of Decorative Lamination Sheet.
The decorative surface of the sheet
shall be sufficiently resistant to ab
rasion to protect its base layer
from exposing in normal use. This ability to resist abrasion is determine by holding a circular test specimen taken from sheet & keeping over a horizontal platform & rubbing
it with abrasive paper
mounted over to cylindrical rubber disc. The test specimen is rotated at a fix speed of 60 +/-
2 RPM and
the rubber disc rotates alongwith th
e platform due to fraction be tween them and test specimen.
This causes the surface of
the test specimen to abrade. The numbers
of rotation required to bring about
a defined degree of change in colors
or wearing of the top layer gives
a measure of abrasion resistant to the sheet under test. |
| |
| CONSTRUCTION: |
| “NOVA” MAKE RESISTANCE TO SURFACE WEAR APPARATUS (ABRASION TESTER) For
Decorative Lamination Shee
t (As per IS 2046:1995)
consists of a horizontal platform which rotates
at a fix speed by synchro-set motor. Two Nos. cylindrical rubber cover wheels having width of 12.7mm &
50mm dia disposed symmetrically about the axis of th e platform & located at 20mm in front of its centre
with a loading arrangement to press the rubber disc against the surface of th
e specimen sheets under a
specified load of 5.4 +/- 0.2 N on each. A programmable pre-set Digital counter with total revolution
indication is provided to record the numbers of revolu
tion of the platform and to step the motor after pre set program of revolution. |
10 Pairs of abrasive sheets of 12.7mm width & 160mm
L made of aluminum oxide paper of either 180 or
220 grit with double side tape
fixed at the back to stick them on rubber wheels are provided.
A vacuum suction system is provided to
remove the abraded dust from the surface of the test specimens.
The equipment is finished in POWDER COATED PAINT.
The system is also provided
with side arm resting device. |
| TECHNICAL DATA : |
| Platform Diamete |
140mm |
| Platform Rotation Speed |
60
+ 2 RPM |
| Dimension of Rubber Disc |
50mm dia x 12.7mm width |
| Hardness of Rubber Disc |
50 to 55 IRHD (Shore-A) |
| Distance between Face of Disc |
50 to 55mm |
| Load of Rubber Dis |
5.4
+
0.2 N (550
+ 20gm) |
| Suction by Vacuum |
1.5 to 1.6 kPa min |
| Suction Nozzle Distanc |
77mm |
|
| |
| OTHER FEATURES: |
| Rotation |
By Digital Programmable Counter. |
| Total Rotation Counting |
On Digital Display. |
| Vacuum pump |
Compact Vacuum pump with vacuum system. |
|
| |
| OPTIONAL: |
| Calibration plate for Abrasive Strip made of Rolled Zinc sheet use for checking of cutting powder should be arranged by customer or will be supplied at an extra cost. |
| |
| RELATED STANDARD: IS 2046:1995 |
| |
DECORATIVE THERMOSETTING SYNTHETIC RESIN BONDED LAMINATED SHEETS SPECIFICATION
(Second Revision) ANNEX C |
