ASTM International Standards Specifications

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F1895-98 Practice for Submersion of a Membrane Switch

This practice establishes procedures for the submerging of a membrane switch to verify resistance to ingress of a specified liquid.

This practice can also be used to verify the ability of a membrane switch or graphics layer to act as a liquid seal for a finished product.

Additional test methods or practices can be incorporated to investigate specific results or capabilities.

This practice is a modification of National Electrical Manufacturers Assoc. (NEMA) Publication Number 250-1991 Section 6.10, which is a test for submersion of a finished product housing.

The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

NEMA Publication 250-1991

F1842-97 Standard Test Method for Determining Ink or Coating Adhesion on Plastic Substrates for Membrane Switch Applications.

F1762-02 Standard Practice for Exposing a Membrane Switch to Variation in Atmospheric Pressure

This practice covers a procedure for exposing a membrane switch to variations in atmospheric pressure. It can be used to determine the effects of pressure variations on chemical and mechanical properties and functional characteristics of the switch.

F1683-05 Standard Practice for Creasing or Bending a Membrane Switch, Membrane Switch Flex Tail Assembly or Membrane Switch Component

This practice establishes a method for the creasing or bending of any part of a membrane switch.
This practice can be used with other test methods to achieve specific test results.
The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

F1598-95 Standard Test Method for Determining the Effects of Chemical/Solvent Exposure to a Membrane Switch/Graphic Overlay (Spot Test Method)

This test method covers the testing of any surface that may be exposed to liquid chemical(s).
This test method is not designed for immersion testing conditions or material edge attack.
This test method is designed for evaluation of visual changes. In certain instances physical (non-visual) changes may occur and functional testing may be appropriate.
The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

F1596-00 Standard Practice for Exposure of Membrane Switches to Temperature and Relative Humidity

This practice covers a procedure for temperature and humidity cycling of membrane switches.
This practice is designed to determine changes induced by temperature and humidity.
This practice is not intended to be a thermal shock procedure; a gradual ramp rate between conditions is required.

F1843-97 Standard Practice for Sample Preparation of Transparent Plastic Films for Specular Gloss Measurements, on Membrane Switch Overlays

This practice covers the method of sample preparation, prior to taking gloss measurements on a membrane switch overlay.

Typical applications include window display areas on a graphic overlay, and surface texture.

F1595-00 Standard Practice for Viewing Conditions for Visual Inspection of Membrane Switches

This practice covers procedures for performing visual inspection of membrane switches. This includes visual inspection of overlays and circuitry.
This practice defines lighting parameters, distance from eye to specimen, viewing angle, and the viewing time allowed for a specific size specimen.
This practice is only designed for visual inspection of aesthetic qualities of membrane switches. It is not intended for color matching or gloss measurement.