Kodak GRD7, GRDM instruction sheet Support, Dimensional Stability

Kodak Gen 5 GRD, GRD7, GRDM & GR7M Film

Technical Information Data Sheet – TI2375

August 2006

1. Support

Dimensionally Stable Support

GRD, GRDM	4 mil (0.004 in., 0.10mm)	Estar base
GRD7, GR7M	7 mil (0.007 in., 0.18mm)	Estar thick base

2. Dimensional Stability

Dimensional stability is an all-inclusive term. In photography, it applies to size changes caused by changes in humidity and in temperature, and by processing and aging. The dimensional properties of The Estar base may vary slightly in different directions within a sheet; the differences that may exist, however, are not always aligned with the length and width directions:

Data for the 4-mil products (GRD, GRDM):

Thermal Coefficient of Linear Expansion

Unprocessed or Processed0.001% per ° F (0.0018% per ° C)

Humidity Coefficient of Linear Expansion

Unprocessed	0.0017% per % RH
Processed	0.0016% per % RH

Processing Dimensional Change

Dependent on drying conditions