ASTM International - ASTM D2838-18

Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting

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Organization: ASTM International
Publication Date: 1 April 2018
Status: active
Page Count: 5
ICS Code (Films and sheets): 83.140.10
significance And Use:

5.1 As a result of the manufacturing process, internal stresses are locked into the film and these can be released by heating.

Note 3: For any given type of film or sheeting, the... View More

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.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Note 1: Film has been arbitrarily defined as sheeting having nominal thickness not greater than 0.25 µm (0.010 in.).

Note 2: There is no known ISO equivalent to this test method.

1.5 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.

Document History

ASTM D2838-18
April 1, 2018
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
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...
May 1, 2009
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
As a result of the manufacturing process, internal stresses are locked into the film and these can be released by heating. For any given type of film or sheeting, the temperatures at which shrinkage...
May 1, 2009
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting (Withdrawn 2018)
5.1 As a result of the manufacturing process, internal stresses are locked into the film and these can be released by heating. For any given type of film or sheeting, the temperatures at which...
November 1, 2008
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
As a result of the manufacturing process, internal stresses are locked into the film and these can be released by heating. For any given type of film or sheeting, the temperatures at which shrinkage...
September 1, 2007
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
As a result of the manufacturing process, internal stresses are locked into the film and these can be released by heating. For any given type of film or sheeting, the temperatures at which shrinkage...
April 10, 2002
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
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...
April 10, 2002
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
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...
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