ASTM D2838-18
Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting

Standard No.

ASTM D2838-18

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D2838-18

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.

ASTM D2838-18 Referenced Document

• ASTM D4000 Standard Classification System for Specifying Plastic Materials*， 2023-03-15 Update
• ASTM D5947 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
• ASTM D618 Standard Practice for Conditioning Plastics for Testing*， 2021-07-15 Update
• ASTM D6287 Standard Practice for Cutting Film and Sheeting Test Specimens
• ASTM D6988 Standard Guide for Determination of Thickness of Plastic Film Test Specimens*， 2021-10-01 Update
• ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
• ASTM E2251 Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids*， 2021-12-01 Update

ASTM D2838-18 history

• 2018 ASTM D2838-18 Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
• 2009 ASTM D2838-09e1 Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
• 2009 ASTM D2838-09 Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
• 2008 ASTM D2838-08 Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
• 2007 ASTM D2838-07 Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
• 2002 ASTM D2838-02 Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting
• 1995 ASTM D2838-95 Standard Test Method for Shrink Tension and Orientation Release Stress of Plastic Film and Thin Sheeting