Active Standard ASTM D4321 | Developed by Subcommittee: D20.19
Book of Standards Volume: 08.02
Historical (view previous versions of standard)
Significance and Use
Actual yield is important to the film converter as this determines the actual number of units or packages that he can derive in a particular conversion from any given mass of film.
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 brackets 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—This test method and ISO 4591 address the same subject matter, but differ in technical content.
Note 1—This test method and ISO 4591 address the same subject matter, but differ in technical content.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D883 Terminology Relating to Plastics
D1505 Test Method for Density of Plastics by the Density-Gradient Technique
D4883 Test Method for Density of Polyethylene by the Ultrasound Technique
D6988 Guide for Determination of Thickness of Plastic Film Test Specimens
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 83.140.10 (Films and sheets)