ASTM F1843-97

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

SCOPE
1.1 This practice covers the method of sample preparation, prior to taking gloss measurements on a membrane switch overlay.  
1.2 Typical applications include window display areas on a graphic overlay, and surface texture.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Dec-1996
• Technical Committee: F01 - Electronics
• Drafting Committee: F01.18 - Printed Electronics

Relations

• Replaced By: ASTM F1843-97(2002) - Standard Practice for Sample Preparation of Transparent Plastic Films for Specular Gloss Measurements, on Membrane Switch Overlays
• Effective Date: 10-Dec-1997

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact
ASTM International (www.astm.org) for the latest information.
Designation: F 1843 – 97
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Sample Preparation of Transparent Plastic Films for
Specular Gloss Measurements, on Membrane Switch
1
Overlays
This standard is issued under the fixed designation F 1843; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5.2 Sample preparation will effect the outcome of gloss
readings. This practice will eliminate second surface reflection,
1.1 This practice covers the method of sample preparation,
and allow a more accurate gloss reading of the substrate.
prior to taking gloss measurements on a membrane switch
5.3 Materials which require this preparation include the
overlay.
following: clear or translucent substrates, colored transparent
1.2 Typical applications include window display areas on a
substrates, and areas printed with clear, translucent, or trans-
graphic overlay, and surface texture.
parent colored coatings.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Apparatus
responsibility of the user of this standard to establish appro-
6.1 Gloss Meter, in accordance with Test Method D 523.
priate safety and health practices and determine the applica-
3
6.2 Black Iodized Aluminum Test Plate , This plate is to be
bility of regulatory limitations prior to use.
a hard, flat, smooth, matte black, nonporous surface. Gloss
readings should be between 4 to 12 gloss units, when measured
2. Referenced Documents
with a 60° gloss meter. Plate size should be sufficient to allow
2.1 ASTM Standards:
the specimen to be laid flat for readings, typically 12 by 12 in.
2
D 523 Test Method for Specular Gloss
(304.8 by 304.8 mm). Material thickness to be 0.062 in. ( 1.57
mm) or thicker.
3. Terminology
6.3 Distilled Water,or Isopropyl Alcohol.
3.1 Definitions:
6.4 Eye Dropper.
3.1.1 membrane switch, n—a momentary switching device
6.5 Hand Held Brayer (rubber roller).
in which at least one contact is on (or made of) a flexible
substrate. 7. Procedure
3.1.2 specular gloss, n—the degree to which a surface
7.1 Verify the specimen and plate are clean, dry, and free of
simulates a perfect mirror in its capacity to reflect incident
contamination.
light.
7.2 Use the eyedropper to place a few drops of distilled
3.1.3 overlay, n—the outer layer of a membrane switch on
water or isopropyl alcohol in the center of the black plate.
which the
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