ASTM D2732-08
Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting
- Standard No.
- ASTM D2732-08
- Release Date
- 2008
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D2732-14
- Latest
- ASTM D2732-14(2020)
- Scope
As a result of the manufacturing process, internal stresses may be locked into the film which can be released by heating. The temperature at which shrinkage will occur is related to the processing techniques employed to manufacture the film and may also be related to a phase transition in the base resin. The magnitude of the shrinkage will vary with the temperature of the film.
Shrinkage of a particular material produced by a particular process may be characterized by this test method by making measurements at several temperatures through the shrinkage range of the material.
Following a characterization in a particular case, it is usually sufficient thereafter to measure shrinkage at only one selected temperature for purposes of process or quality control, or both.
1.1 This test method covers determination of the degree of unrestrained linear thermal shrinkage at given specimen temperatures of plastic film and sheeting of 0.76 mm (0.030 in.) thickness or less. This test method does not cover shrinkage from loss of solvent in some materials.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered 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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 18212;This document is not equivalent to ISO 11501.
ASTM D2732-08 Referenced Document
- ASTM D1204 Standard Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Elevated Temperature
- ASTM D618 Standard Practice for Conditioning Plastics for Testing
- ASTM D883 Standard Terminology Relating to Plastics
- ASTM E1 Standard Specification for ASTM Thermometers
- ISO 11501 Plastics - Film and sheeting - Determination of dimensional change on heating
ASTM D2732-08 history
- 2020 ASTM D2732-14(2020) Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film
and Sheeting - 2014 ASTM D2732-14 Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film
and Sheeting - 2008 ASTM D2732-08 Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting
- 2003 ASTM D2732-03 Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting
- 1996 ASTM D2732-96 Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting
