Abrasion
Wallace Rubproofness Tester - A7
Features |
| |
 |
Testing independent of operator error |
| |
|
Simple preparation and loading of samples |
| |
|
Three different pressures available as standard |
| |
|
Simple servicing procedure |
| |
|
Calibration to UK National Standards |
| |
To find out more about this product contact Wallace |
|
|
 |
Introduction
The Rubproofness Tester, model A7, measures how effectively printing ink adheres to paper or board. Conforming to BS 3110, the instrument evaluates the extent of colour transfer from printed or coated materials due to rubbing - a condition which frequently occurs during the handling and shipment of packaged goods.
General Information
The Wallace Rubproofness Tester measures the resistance to rubbing of printed paper or board. It can also be used to measure colour transfer from printed or coated material during rubbing.
Wallace Rubproofness Tester Specifications
See the table below for a run-down of this product specifications.
Dimensions: |
22cm wide x 22cm deep x 34cm high |
Weight: |
17 kg |
Electrical requirements: |
240v 215 VAC 50/60hz |
Also available: |
110v |
Speed of rotation: |
60 ± 5 rpm |
Pressures on sample: |
3.5, 7 or 14kPa |
Sample sizes: |
Upper 50mm diameter, Lower 115mm diameter |
| |
|
Standard Accessories
| |
|
Additive weights for 3.5, 7 or 14kPa |
| |
|
Foam Discs 50 & 115mm diameter |
| |
|
|
Specimen preparation equipment
| |
|
Circular cutting dies: |
| |
|
50mm dia Cat ref S6/17E/23 |
| |
|
115mm dia Cat Ref S6/17E/32 |
| |
|
|
Operating Principle
The tester consists of two flat discs of different diameters mounted on separate vertical shafts driven at the same rotational speed by an electric motor.
The upper disc is mounted on an arm which can swivel to allow easy access for sample loading. A mechanical rotation counter is fitted. Different pressures on the sample are achieved by varying the additive weights.
Normally the circumference of the smaller upper disc will pass through the centre of the lower disc. Samples of 50 and 115mm diameter are fitted to the upper and lower disc respectively using the self adhesive foam discs supplied. A ring is fitted over the lower disc to locate the sample.
Tests using different pressures, rotations and rubbing surfaces will determine a standard for any particular material.
|
