ASTM D4321-99 - 10.11.1999
 
1. Scope

1.1 This test method covers the determination of yield (area per unit mass) of plastic film.

1.2 Also described in this test method is the means for calculating nominal yield, given values for nominal density, and nominal thickness. This is needed since, in material specifications, limits for yield are normally stated in terms of the percent deviation of actual yield from nominal yield.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 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.

Note 1-There is no known ISO equivalent to this specification.
 
2. Referenced Documents

D792-20

Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

D883-26b

Standard Terminology Relating to Plastics (Includes all amendments and changes 8/24/2026).

D1505-25

Standard Test Method for Density of Plastics by the Density-Gradient Technique

D4883-18

Standard Test Method for Density of Polyethylene by the Ultrasound Technique

D6988-26

Standard Guide for Determination of Thickness of Plastic Film Test Specimens

E691-23

Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method