Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting

Importancia y uso:

4.1 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.

4.2 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.

4.3 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.

Subcomité:

D20.19

Referida por:

D1204-14R20, D8065_D8065M-16R23, D2673-14R22

Volúmen:

08.01

Número ICS:

83.140.10 (Films and sheets)

Palabras clave:

free shrink; plastics; sheeting; unrestrained linear shrinkage;