ASTM D6957-12

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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2012
• ICS: 87.100 - Paint coating equipment
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.61 - Paint Application Tools

Relations

• Replaces: ASTM D6957-08 - Standard Practice for Measuring Curl in Paint Brush Filling Material
• Effective Date: 01-Jun-2012
• Replaced By: ASTM D6957-12(2018) - Standard Practice for Measuring Curl in Paint Brush Filling Material
• Effective Date: 01-Sep-2018

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6957 − 12
Standard Practice for
1
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 2.1.1 paint brush filament, n—a synthetic polymer extrusion
used in brushing material.
1.1 This practice describes the procedure for measuring curl
2.1.2 filament curl, n—deviation from straight, along the
in synthetic filament.
length of a filament.
1.2 This practice is applicable to filament 2 to 5 in. (50.8 to
2.1.3 butt-end, n—the larger end of a tapered filament;
127 mm) in length.
either end of a level filament.
1.3 This practice is applicable to tapered filament or level
filament. 3. Significance and Use
1.4 This practice is applicable to loose filling material and
3.1 It is important for the manufacturing and performance of
material removed from a brush. a brush to have filaments with minimal curl.
1.5 The values stated in inch-pound units are to be regarded
4. Apparatus
as standard. The values given in parentheses are mathematical
4.1 Filament curl deviation chart. See Fig. 1.
conversions to SI units that are provided for information only
and are not considered standard.
5. Procedure
1.6 This standard does not purport to address all of the
5.1 For Testing Synthetic Filaments:
safety concerns, if any, associated with its use. It is the
5.1.1 Select filaments to be measured.
responsibility of the user of this standard to establish appro-
5.1.2 Allow filaments to acclimate to room temperature 70
priate safety and health practices and determine the applica-
to 75°F (21 to 24°C) at least two hours.
bility of regulatory limitations prior to use.
5.1.3 Place a filament on the filament curl deviation chart
with butt-end at the x-reference point (see Fig. 1).
2. Terminology
5.1.4 Record the degree of deviation from straight at the
2.1 Definitions of Terms Specific to This Standard:
other end of the filamen
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6957 − 08 D6957 − 12
Standard Practice for
1
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
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 givenstated in inch-pound units are to be regarded as the standard as this is the dominant measurement system
used in the paint brush industry. 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Terminology
2.1 Definitions of Terms Specific to This Standard:
2.1.1 paint brush filament, n—a synthetic polymer extrusion used in brushing material.
2.1.2 filament curl, n—deviation from straight, along the length of a filament.
2.1.3 butt-end, n—the larger end of a tapered filament; either end of a level filament.
3. Significance and Use
3.1 It is important for the manufacturing and performance of a brush to have filaments with minimal curl.
4. Apparatus
4.1 Filament curl deviation chart. See Fig. 1.
5. Procedure
5.1 For Testing Synthetic Filaments:
5.1.1 Select filaments to be measured.
5.1.2 Allow filaments to acclimate to room temperature 70 to 75°F (21 to 24°C) at least two hours.
5.1.
...