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
- Technical Committee
- D01 - Paint and Related Coatings, Materials, and Applications
- Drafting Committee
- D01.61 - Paint Application Tools
Relations
- Effective Date
- 01-Sep-2018
Overview
ASTM D6957-12(2018) - Standard Practice for Measuring Curl in Paint Brush Filling Material establishes standardized procedures for evaluating the curl in synthetic filaments used in paint brush manufacturing. Developed by ASTM International, this practice is crucial for quality control and ensuring the consistent performance of paint brushes. The standard outlines the methods for measuring filament curl, highlighting its importance for manufacturing and brush application performance.
Key Topics
- Scope of Measurement: The standard covers synthetic filaments ranging from 2 to 5 inches (50.8 to 127 mm) in length, including both tapered and level filaments. It applies to loose filling materials as well as filaments removed from finished brushes.
- Definition of Terms:
- Paint Brush Filament: Synthetic polymer extrusion designed for use in paint brushes.
- Filament Curl: The deviation from a straight line observed along the length of a filament.
- Butt-End: The larger end of a tapered filament or either end of a level filament.
- Measurement Procedure: Filaments are acclimated to room temperature, positioned on a standard filament curl deviation chart, and the degree of deviation from straightness is recorded for each specimen. The process is repeated for multiple samples and the average deviation is calculated.
- Significance of Curl: Minimal filament curl is essential to achieve optimal manufacturing results and brush performance, as excessive curl can negatively affect the usability and finish quality of paint brushes.
- Units of Measurement: Inch-pound units are standard, with SI (metric) conversions provided for informational use.
Applications
ASTM D6957-12(2018) is a valuable tool for:
- Manufacturers of Paint Brushes: Ensuring raw synthetic filaments have minimal curl improves product consistency and quality. Adhering to this standard allows manufacturers to assess incoming filament batches, streamline production, and minimize defects.
- Quality Control Laboratories: Provides a repeatable, objective method for measuring curl, supporting quality assurance processes and supplier evaluations.
- Brush Designers and R&D: Facilitates the selection and specification of suitable filament materials to meet desired brush performance parameters.
- Suppliers of Synthetic Filament: Assists material vendors in meeting customer requirements by demonstrating compliance with internationally recognized testing practices.
Related Standards
Several ASTM and international standards are relevant to the manufacture and evaluation of paint brush materials:
- ASTM D5530 - Standard Test Method for Determination of Filament Length in Paint Brushes
- ASTM D6680 - Standard Practice for the Preparation of Synthetic Filament Used in Brush Application Tools
- ISO 5427 - Paintbrushes - Bristle and Filament Quality Specifications
By referencing ASTM D6957-12(2018), stakeholders in the paint brush industry align with international best practices, strengthen quality assurance, and facilitate smoother global trade through standardized product specifications. For further details, users should consult the full text available from ASTM International.
Frequently Asked Questions
ASTM D6957-12(2018) is a standard published by ASTM International. Its full title is "Standard Practice for Measuring Curl in Paint Brush Filling Material". This standard covers: 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.
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.
ASTM D6957-12(2018) is classified under the following ICS (International Classification for Standards) categories: 87.100 - Paint coating equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM D6957-12(2018) has the following relationships with other standards: It is inter standard links to ASTM D6957-12. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM D6957-12(2018) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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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