Short Description:

Silicon Rubber Keypad For Verifone Vx520 POS Terminal With Silk Printing Logo

Feature
1) Country of Origin (Manufacturer)
2) Experienced Technical Staffs
3) Strong Production Capacity
4) Competitive Price
5) Perfect Service
6) High Quality

Inspection standard of silicone keypad

I. General standards

1. the working temperature of the general silicone keypad needs to be from -15℃ to +80℃;

2. the temperature during its storage needs to be -30℃ to +85℃;

3. the general storage time should be one week. 4;

4. the silicone rubber keypad needs to be placed flat if it is not extruded, which is suitable for long-term storage;

5. Silicone products can only be stored for about 1 month if they are in extruded condition;

6. the relative humidity of the silicone products should be maintained at 45℅ to 95℅ in the working application;

7. The working air pressure should be 86 to 106Kpa;

8. The contact rebound rate should be less than 12 milliseconds.

9. The insulation resistance of the silicone keypad should be more than 1012 ohm/500VDC.

10. Its breakdown voltage is usually more than 25KV/mm.

The main inspection standards for silicone rubber keypads are as follows:

1) Appearance:

Generally in a bright environment, the product can be extruded into a thin strip, and then visual inspection, we can find that the silicone rubber product should be a fine and uniform paste or present a viscous liquid, and can be observed between each batch of silicone rubber keys should not be obvious color differences.

2) Extrudability:

We need first to put the silicone products under standard test conditions, the placement time should be more than 4 hours, and then a 3 mm rubber nozzle should be deployed to 0.3 MP under the pressure of the gas source for effective measurement, and be sure to record its extrusion of 20 grams of silica gel products used in how much time, and in the process of these tests to take the three measurements of the data, to see how much they are the average value! as a result, the effective test results should generally be greater than or equal to 7 s/20g

(3) finger drying time:

(Generally, silicone buttons or rubber products, with rubber tools in the experimental panel extrusion into thin strip-shaped objects, and immediately timing, until the fingers lightly touch the rubber strip is not stained, at this point, we look at the recorded time is how much time is generally effective in 10min ≤ time used ≤ 30min).