GB/T 9858-2009
Method for determining the folding endurance of photographic film and film base (English Version)

Standard No.

GB/T 9858-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 9858-2009

Replace

GB/T 9858-1988

Scope

This standard specifies the principles, instruments and test procedures for the determination of film base and film folding endurance (MIT folding endurance test method). This standard is mainly applicable to the determination of folding endurance of cellulose triacetate base or polyester base and photosensitive film (with or without backing layer, processed or unprocessed) based on these bases .

GB/T 9858-2009 Referenced Document

• GB/T 2918-1998 Plastics--Standard atmospheres for conditioning and testing
• ISO 5626:1993 Paper; determination of folding endurance

GB/T 9858-2009 history

• 2009 GB/T 9858-2009 Method for determining the folding endurance of photographic film and film base
• 1988 GB/T 9858-1988 Method for determining the folding endurance of photographic film and film base