HG/T 3009-1999Photographic film and film base - Determination of thickness by mechanical scanning (English PDF)

Foreword

This standard is equivalent to international standards ISO4593.1993 "Plastics

- Film and sheeting - Determination of thickness by mechanical scanning". It

is revised based on the chemical industry standard HG/T 3009-1986 "Film

base thickness determination method".

Compared with HG/T 3009, the main technical differences are as follows.

The format and technical content are written based on ISO4593.Delete

the 2 chapters - Definition and Principles. Amend the content to chapter

Application Scope; Add the sampling requirements of the photosensitive

material.

Since the date of implementation, this standard shall replaces HG/T

3009-1986.

This standard was proposed by the Technical Supervision Division of former

Ministry of Chemical Industry.

This standard shall be under the jurisdiction of the Standardization Technical

Focal Division of Photosensitive Material of Ministry of Chemical Industry.

The drafting organizations of this standard. China Lucky Film Corporation,

and Wuxi Aermei Film & Chemicals Corporation.

1 Scope

This standard specifies the determination of photographic film, and film base

thickness by using mechanical scanning method.

This standard does not apply to the determination of the thickness of the

embossed film base1.

2 Instruments

1 The scope of this standard has been amended so as to apply to photosensitive material.

e) The number of samples measured;

f) The arithmetic mean of the individual measurements (accurate to 1 µm

or 0.001 µm) shall be the average mechanically measured thickness of

the test samples. If necessary, it shall also report the individual

measured values;

g) Report the number and frequency of measurement. If necessary, it shall

also report the standard deviation.

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