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Standard Guide for Determination of Thickness of Plastic Film Test Specimens
Přeložit název
NORMA vydána dne 1.10.2021
Označení normy: ASTM D6988-21
Datum vydání normy: 1.10.2021
Kód zboží: NS-1042209
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
dial gauge, dimensions, film, plastics, thickness,, ICS Number Code 83.140.10 (Films and sheets)
Significance and Use | ||||||||||
5.1?This guide is intended to provide recommendations and suggested good practices to determine precise dimensions when necessary for the calculation of properties expressed in physical units. It is not intended to replace practical thickness measurements based on commercial portable tools, nor is it implied that thickness measurements made by the procedures will agree exactly. |
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1. Scope | ||||||||||
1.1?This guide covers the determination of the thickness of plastic films where the thickness is used directly in determining the results of tests for various properties. Use this practice except as otherwise required in material specifications or in applicable test standards. Note 1:?Film is defined in Terminology D883 as an optional term for sheeting
having a nominal thickness no greater than 0.25 mm (0.010
in.).
Note 2:?Alternative methods are acceptable if they meet the
requirements of measurement precision as noted in this
guide.
Note 3:?This guide is not intended to address the sampling
techniques or the measurement of film thickness for the commercial
classification of commercial products or for quality control
purposes.
1.2?The values stated in SI units are to be regarded as the standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 4:?This standard and ISO 4593 address the same subject
matter but differ in technical content.
1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||||
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