ASTM-D2838 › Historical Revision Information
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting (Withdrawn 2018)
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Scope
1.1 This test method covers the determination of the shrink tension and related characteristics, that is, shrink force and orientation release stress, of heat-shrinkable plastic film and sheeting of less than 1.0 mm (0.04 in.) thickness. Two procedures are described that permit the measurement of shrink forces at predetermined temperatures. They are as follows:
1.1.1 Procedure A is designed to measure the maximum force exerted by a specimen that is totally restrained from shrinking as it is heated rapidly to a specific temperature.
1.1.2 Procedure B is designed to measure the maximum force exerted by a specimen that is permitted to shrink a predetermined amount prior to restraint while being heated rapidly to a specific temperature.
1.2 Orientation release stress can be determined from the data obtained using Procedure A.
1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
Note 1—There is no equivalent ISO test method.
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.
Keywords
film; orientation release stress; shrink force; shrink tension; thin sheeting; ICS Number Code 83.140.10 (Films and sheets)
To find similar documents by ASTM Volume:
08.01 (Plastics (I): D256 - D3159)
08.02 (Plastics (II): D3222 - D5083)
To find similar documents by classification:
83.140.10 (Films and sheets Including plates)
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Document Number
ASTM-D2838
Revision Level
WITHDRAWN
Status
Superseded
Modification Type
Revision
Publication Date
Jan. 1, 2018
Document Type
Test Method
Page Count
5 pages
Committee Number
D20.19