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GB/T 9858-2009: Method for determining the folding endurance of photographic film and film base
Status: Valid GB/T 9858: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 9858-2009 | English | 139 |
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Method for determining the folding endurance of photographic film and film base
| Valid |
GB/T 9858-2009
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| GB/T 9858-1988 | English | 199 |
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Method for determining the folding endurance of photographic film and film base
| Obsolete |
GB/T 9858-1988
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PDF similar to GB/T 9858-2009
Basic data | Standard ID | GB/T 9858-2009 (GB/T9858-2009) | | Description (Translated English) | Method for determining the folding endurance of photographic film and film base | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G81 | | Classification of International Standard | 37.040.20 | | Word Count Estimation | 6,683 | | Date of Issue | 2009-12-15 | | Date of Implementation | 2010-06-01 | | Older Standard (superseded by this standard) | GB/T 9858-1988 | | Quoted Standard | GB/T 2918; ISO 5626-1993 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.15 (Total No.155) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the principles of film and film base folding determination, instruments and test procedures. This standard applies to cellulose triacetate film base or polyester film base as well as the determination of these film -based photographic film folding body for support. | GB/T 9858-2009: Method for determining the folding endurance of photographic film and film base---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Method for determining the folding endurance of photographic film and film base
ICS 37.040.20
G81
National Standards of People's Republic of China
Replacing GB/T 9858-1988
Determination of the base sheet and folding the film
Posted 2009-12-15
2010-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 9858-1988 "Determination of film base and folding of the film."
This standard compared with GB/T 9858-1988, the main changes are as follows.
--- The "subject matter and scope" to "Range" (Excerpts Chapter 1, Chapter 1 of the 1988 edition);
--- "Reference standard" to "normative references" chapter (Chapter 2 of this edition, the 1988 version of Chapter 2);
--- "Term" to "Terms and Definitions" (Excerpts Chapter 3, Section 3 of the 1988 edition);
--- Chapter 6, "Environmental conditions" with reference to GB/T 2918 were clearly defined (Chapter 6 of this edition);
--- Chapter 7, "Sample Preparation" will "clip the full width of 30cm as a sample" to "take along the full width of the film base longitudinal sample a 30cm"
(Chapter 7 of this edition).
The standard proposed by China Petroleum and Chemical Industry Association.
The photosensitive material standard by the National Standardization Technical Committee (SAC/TC102) centralized.
This standard was drafted. China Lucky Film Group Corporation.
The main drafters of this standard. Liyan Ying, Sun Zhiying, oakleys.
This standard supersedes the previous editions are.
--- GB/T 9858-1988.
Determination of the base sheet and folding the film
1 Scope
This standard specifies the base sheet and film folding Determination (MIT folding tester method) principles, instrumentation and test procedures.
This standard applies to cellulose triacetate film base or polyester base film base as well as those in support of the photosensitive film body (with the backing layer
Folding or without the backing layer, processed or unprocessed) measurement.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments or revisions do not apply to this standard, however, whether these files can be used to encourage the parties in accordance with this standard agreement
The latest version. For undated reference documents, the latest versions apply to this standard.
GB/T 2918 plastic sample conditioning and testing of the standard environment
5626 ISO .1993 Determination of folding paper
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
A width of 15mm film or film base, under a certain tension can withstand 135 ° reciprocating folding ability of a reciprocating folding times
FIG.
4. Summary
Under test conditions, with the MIT folding device, the width of the base sheet or film samples of 15mm, subject to certain tension in a
At a given speed, for 135 ° folding back and forth until the fracture, get back and forth from the counter number of readings, and then calculate the base sheet or film resistance
Fold degrees.
5 Test Equipment
5.1 MIT folding tester
The instrument shall comply with the technical requirements of ISO 5626.1993 of the relevant provisions. The main technical requirements are as follows.
a) Tension adjustment range. 4.91N ~ 14.72N;
b) folding angle. 135 ° ± 2 °;
c) folding speed. (175 ± 10) times/min;
d) Folding head width. 19mm;
e) Origuchi radius of the arc. (0.38 ± 0.02) mm;
f) folding the cartridge slot distance. (0 ~ 0.25) mm.
5.2 special knife
Cutting sample width (15.0 ± 0.1) mm, length 120mm.
6 Environmental Conditions
Before the test, the samples should be stored for some time under the conditions recommended by the manufacturer. If the product is not recommended storage conditions, should follow
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