ASTM F2251-13
(Test Method)Standard Test Method for Thickness Measurement of Flexible Packaging Material
Standard Test Method for Thickness Measurement of Flexible Packaging Material
SIGNIFICANCE AND USE
4.1 This test method provides a means for measuring a thickness dimension. Accurate measurement of thickness can be critical to meeting specifications and characterizing process, product, and material performance.
4.2 This test method does not address acceptability criteria. These need to be jointly determined by the user and producer of the product. Repeatability and reproducibility of measurement is shown in the Precision and Bias section. Attention should be given to the inherent variability of materials being measured as this can affect measurement outcome.
SCOPE
1.1 This test method covers the measurement of thickness of flexible packaging materials using contact micrometers.
1.2 The Precision and Bias statement for this test method was developed using both handheld and bench top micrometers with foot sizes ranging from 4.8 to 15.9 mm (3/16 to 5/8 in.).
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.4 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.
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Designation: F2251 − 13
Standard Test Method for
1
Thickness Measurement of Flexible Packaging Material
This standard is issued under the fixed designation F2251; 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.
4
1. Scope 2.2 ANSI/ASQ Standards:
ANSI/ASQC Z1.4 Sampling Procedures and Tables for In-
1.1 Thistestmethodcoversthemeasurementofthicknessof
spection by Attributes
flexible packaging materials using contact micrometers.
ANSI/ASQC Z1.9 Sampling Procedures and Tables for In-
1.2 The Precision and Bias statement for this test method
spection by Variables
wasdevelopedusingbothhandheldandbenchtopmicrometers
3 5 3. Terminology
with foot sizes ranging from 4.8 to 15.9 mm ( ⁄16 to ⁄8 in.).
3.1 Definitions:
1.3 The values stated in either SI units or inch-pound units
3.1.1 bench micrometer—tabletop measurement system us-
are to be regarded separately as standard. The values stated in
ing a dead weight or spring.
each system may not be exact equivalents; therefore, each
3.1.2 foot—the moving component of the micrometer that
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance comes in contact with the sample.
with the standard.
4. Significance and Use
1.4 This standard does not purport to address all of the
4.1 This test method provides a means for measuring a
safety concerns, if any, associated with its use. It is the
thickness dimension. Accurate measurement of thickness can
responsibility of the user of this standard to establish appro-
be critical to meeting specifications and characterizing process,
priate safety and health practices and determine the applica-
product, and material performance.
bility of regulatory limitations prior to use.
4.2 This test method does not address acceptability criteria.
2. Referenced Documents These need to be jointly determined by the user and producer
of the product. Repeatability and reproducibility of measure-
2
2.1 ASTM Standards:
ment is shown in the Precision and Bias section. Attention
D374 Test Methods for Thickness of Solid Electrical Insu-
should be given to the inherent variability of materials being
3
lation (Withdrawn 2013)
measured as this can affect measurement outcome.
D5947 Test Methods for Physical Dimensions of Solid
Plastics Specimens
5. Apparatus
D6988 GuideforDeterminationofThicknessofPlasticFilm
5.1 Mechanical gage, suitable for measuring thickness:
Test Specimens
5.1.1 Thethicknessgagemaybeeitherabenchorhand-held
E171 Practice for Conditioning and Testing Flexible Barrier
mechanical model.
Packaging
5.1.2 Thegageshouldbecapableofaccuratelymeasuringin
E691 Practice for Conducting an Interlaboratory Study to
increments of 2.5 µm (0.0001 in.).
Determine the Precision of a Test Method
5.1.3 The foot size and foot pressure should be known and
identified. Because of the compressibility of different materials
it is important when comparing results between different
1
This test method is under the jurisdiction ofASTM Committee F02 on Flexible
laboratories that the size of the foot and pressure be the same.
Barrier Packaging and is the direct responsibility of Subcommittee F02.20 on
Refer to Guide D6988 for further guidance on foot pressures.
Physical Properties.
5.1.4 It is recommended that a calibration be performed on
Current edition approved Aug. 1, 2013. Published October 2013. Originally
approved in 2003. Last previous edition approved in 2008 as F2251 – 03 (Reap-
the apparatus used and certified to a recognized industry
proved 2008). DOI: 10.1520/F2251-13.
standard such as National Institute of Standards and Technol-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ogy (NIST).
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
The last approved version of this historical standard is referenced on Available fromAmerican National Standards Instititute (ANSI) 25 W. 43rd St.,
www.astm.org. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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F2251 − 13
NOTE 1—Test Methods D5947 and D374 give guidance on methods for TABLE 1 Description of Equipment used in Round Robin Studies
checking calibration and parallelism.
NOTE 1—Force ranges from instruments are specified from 10 to 150 g.
Exceptions include bench top model at 15.875 mm (0.625 in.) rated at 7.3
6. Sampling
psi with a dead weight load o
...
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: F2251 − 03 (Reapproved 2008) F2251 − 13
Standard Test Method for
1
Thickness Measurement of Flexible Packaging Material
This standard is issued under the fixed designation F2251; 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 test method covers the measurement of thickness of flexible packaging materials using contact micrometers.
1.2 The Precision and Bias statement for this test method was developed using both handheld and bench top micrometers with
3 5
foot sizes ranging from 4.8 to 15.9 mm ( ⁄16 to ⁄8 in.).
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values given in
parentheses are for information only.stated in each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.4 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. Referenced Documents
2
2.1 ASTM Standards:
3
D374 Test Methods for Thickness of Solid Electrical Insulation (Withdrawn 2013)
D1898D5947 Practice for Sampling of PlasticsTest Methods for Physical Dimensions of Solid Plastics Specimens (Withdrawn
1998)
D4332D6988 Practice for Conditioning Containers, Packages, or Packaging Components for TestingGuide for Determination of
Thickness of Plastic Film Test Specimens
D5947E171 Test Methods for Physical Dimensions of Solid Plastics SpecimensPractice for Conditioning and Testing Flexible
Barrier Packaging
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
4
2.2 ANSI/ASQ Standards:
ANSI/ASQC Z1.4 Sampling Procedures and Tables for Inspection by Attributes
ANSI/ASQC Z1.9 Sampling Procedures and Tables for Inspection by Variables
3. Terminology
3.1 Definitions:
3.1.1 bench micrometer—tabletop measurement system using a dead weight or spring.
3.1.2 foot—the moving component of the micrometer that comes in contact with the sample.
4. Significance and Use
4.1 This test method provides a means for measuring a thickness dimension. Accurate measurement of thickness can be critical
to meeting specifications and characterizing process, product, and material performance.
1
This test method is under the jurisdiction of ASTM Committee F02 on Flexible Barrier Packaging and is the direct responsibility of Subcommittee F02.20 on Physical
Properties.
Current edition approved April 1, 2008Aug. 1, 2013. Published May 2008October 2013. Originally approved in 2003. Last previous edition approved in 20032008 as
ε1
F2251 – 03 . DOI: 10.1520/F2251-03R08. (Reapproved 2008). DOI: 10.1520/F2251-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from American National Standards Instititute (ANSI) 25 W. 43rd St., 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2251 − 13
4.2 This test method does not address acceptability criteria. These need to be jointly determined by the user and producer of
the product. Repeatability and reproducibility of measurement is shown in the Precision and Bias section. Attention should be
given to the inherent variability of materials being measured as this can affect measurement outcome.
5. Apparatus
5.1 Mechanical gage, suitable for measuring thickness:
5.1.1 The thickness gage may be either a bench or hand-held mechanical model.
5.1.2 The gage should be capable of accurately measuring in increments of 2.5 μm (0.0001 in.).
5.1.3 The foot size and foot pressure should be known and identified. Because of the compressibility of different materials it
is important when comparing results between different laboratories
...
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