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ASTM

ASTM D6957-12(2018)

(Practice)

Standard Practice for Measuring Curl in Paint Brush Filling Material

Standard Practice for Measuring Curl in Paint Brush Filling Material

SIGNIFICANCE AND USE
3.1 It is important for the manufacturing and performance of a brush to have filaments with minimal curl.
SCOPE
1.1 This practice describes the procedure for measuring curl in synthetic filament.  
1.2 This practice is applicable to filament 2 to 5 in. (50.8 to 127 mm) in length.  
1.3 This practice is applicable to tapered filament or level filament.  
1.4 This practice is applicable to loose filling material and material removed from a brush.  
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Aug-2018
ICS
87.100 - Paint coating equipment
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.61 - Paint Application Tools
Current Stage
Ref Project

Relations

Replaces
ASTM D6957-12 - Standard Practice for Measuring Curl in Paint Brush Filling Material
Effective Date
01-Sep-2018

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ASTM D6957-12(2018) - Standard Practice for Measuring Curl in Paint Brush Filling MaterialASTM D6957-12(2018) - Standard Practice for Measuring Curl in Paint Brush Filling Material
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ASTM D6957-12(2018) - Standard Practice for Measuring Curl in Paint Brush Filling Material
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6957 − 12 (Reapproved 2018)
Standard Practice for
Measuring Curl in Paint Brush Filling Material
This standard is issued under the fixed designation D6957; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Terminology
1.1 This practice describes the procedure for measuring curl 2.1 Definitions of Terms Specific to This Standard:
in synthetic filament. 2.1.1 paint brush filament, n—a synthetic polymer extrusion
used in brushing material.
1.2 This practice is applicable to filament 2 to 5 in. (50.8 to
2.1.2 filament curl, n—deviation from straight, along the
127 mm) in length.
length of a filament.
1.3 This practice is applicable to tapered filament or level
2.1.3 butt-end, n—the larger end of a tapered filament;
filament.
either end of a level filament.
1.4 This practice is applicable to loose filling material and
material removed from a brush.
3. Significance and Use
1.5 The values stated in inch-pound units are to be regarded
3.1 It is important for the manufacturing and performance of
as standard. The values given in parentheses are mathematical
a brush to have filaments with minimal curl.
conversions to SI units that are provided for information only
4. Apparatus
and are not considered standard.
1.6 This standard does not purport to address all of the 4.1 Filament curl deviation chart. See Fig. 1.
safety concerns, if any, associated with its use. It is the
5. Procedure
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- 5.1 For Testing Synthetic Filaments:
mine the applicability of regulatory limitations prior to use.
5.1.1 Select filaments to be measured.
1.7 This international standard was developed in accor-
5.1.2 Allow filaments to acclimate to room temperature 70
dance with internationally recognized principles on standard-
to 75°F (21 to 24°C) at least two hours.
ization established in the Decision on Principles for the
5.1.3 Place a filament on the filament curl deviation chart
Development of International Stand
...

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