ASTM D3811/D3811M-21a

Standard Test Method for Unwind Force of Pressure-Sensitive Tapes

SIGNIFICANCE AND USE
5.1 This procedure simulates hand and machine unwinding of tape at low rates. The force required for unwinding at low rates is a function of rate. At some rate (expected to be different for each construction type and manufacturer) there occurs an inversion of the response. The rate for this test method does not allow for comparisons of different tapes that will be unwound at high rates.  
5.2 This procedure can be used to indicate satisfaction where a specification for unwind; either maximum, minimum, or mean; is established and when the responses referred to in 5.1 are taken into consideration.
SCOPE
1.1 This test method covers one procedure for determining the force required to unwind a roll of pressure-sensitive tape.  
1.2 The values stated in either SI 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 must be used independently, without combining values in any way.  
1.3 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.  
1.4 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-Oct-2021
• ICS: 83.180 - Adhesives
• Technical Committee: D10 - Packaging
• Drafting Committee: D10.14 - Tape and Labels

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: D3811/D3811M − 21a
Standard Test Method for
1
Unwind Force of Pressure-Sensitive Tapes
This standard is issued under the fixed designation D3811/D3811M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 3. Terminology
3.1 Definitions—General terms in this test method are de-
1.1 This test method covers one procedure for determining
fined in Terminology D996.
the force required to unwind a roll of pressure-sensitive tape.
1.2 The values stated in either SI or inch-pound units are to
4. Summary of Test Method
be regarded separately as standard. The values stated in each
4.1 The sample roll of tape is placed on a free-turning
system may not be exact equivalents; therefore, each system
spindle held in a CRE (constant-rate-of-extension) tension
must be used independently, without combining values in any
tester. While the crosshead is moved at a specified rate, the
way.
maximum force measured during unwinding of approximately
1.3 This standard does not purport to address all of the 150 mm [6 in.] of tape is taken as the unwind force.
safety concerns, if any, associated with its use. It is the
5. Significance and Use
responsibility of the user of this standard to establish appro-
5.1 This procedure simulates hand and machine unwinding
priate safety, health, and environmental practices and deter-
of tape at low rates. The force required for unwinding at low
mine the applicability of regulatory limitations prior to use.
ratesisafunctionofrate.Atsomerate(expectedtobedifferent
1.4 This international standard was developed in accor-
for each construction type and manufacturer) there occurs an
dance with internationally recognized principles on standard-
inversionoftheresponse.Therateforthistestmethoddoesnot
ization established in the Decision on Principles for the
allow for comparisons of different tapes that will be unwound
Development of International Standards, Guides and Recom-
at high rates.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. 5.2 This procedure can be used to indicate satisfaction
where a specification for unwind; either maximum, minimum,
2. Referenced Documents or mean; is established and when the responses referred to in
5.1 are taken into consideration.
2
2.1 ASTM Standards:
D996 Terminology of Packaging and Distribution Environ-
6. Apparatus
ments
6.1 Unwind Force Tester—A CRE tension tester shall be
D3715/D3715M Practice for QualityAssurance of Pressure-
used.The tester shall have two clamps with centers in the same
Sensitive Tapes
plane, parallel with the direction of motion of the stressing
D4332 Practice for Conditioning Containers, Packages, or
clamp, and so aligned that they will hold the specimen wholly
Packaging Components for Testing
in the same plane; a means of moving the stressing clamp at a
E122 Practice for Calculating Sample Size to Estimate,With
uniform rate of 5 6 0.2 mm/s [12.0 6 0.5 in./min]; and an
Specified Precision, the Average for a Characteristic of a
autographic device for recording load. The instrument shall be
Lot or Process
calibrated to an accuracy of 0.5 % full scale. The scale range
used for any test shall be such that the mean test level falls
within 20 to 50 % of full scale.
1
This test method is under the jurisdiction of ASTM Committee D10 on
6.2 Free-Turning Spindle, sized to fit snugly inside the
Packaging and is the direct responsibility of Subcommittee D10.14 on Tape and
sample tape core, with its axis horizontally supported in a
Labels.
frame that can be held in the clamp on the crosshead of the
Current edition approved Nov. 1, 2021. Published April 2022. Originally
approved in 1979. Last previous edition approved in 2021 as D3811/D3811M – 21.
unwind tester that is not supporting the load cell.
DOI: 10.1520/D3811_D3811M-21A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7. Sampling
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
7.1 Acceptance Sampling—Sampling shall be in accordance
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. with Practice D3715/D3715M.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D3811/D3811M − 21a
...

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: D3811/D3811M − 21 D3811/D3811M − 21a
Standard Test Method for
1
Unwind Force of Pressure-Sensitive Tapes
This standard is issued under the fixed designation D3811/D3811M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers one procedure for determining the force required to unwind a roll of pressure-sensitive tape.
1.2 The values stated in either SI 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 must be used independently, without combining values in any way.
1.3 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.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D996 Terminology of Packaging and Distribution Environments
D3715/D3715M Practice for Quality Assurance of Pressure-Sensitive Tapes
D4332 Practice for Conditioning Containers, Packages, or Packaging Components for Testing
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or
Process
3. Terminology
3.1 Definitions—General terms in this test method are defined in Terminology D996.
4. Summary of Test Method
4.1 The sample roll of tape is placed on a free-turning spindle held in a CRE (constant-rate-of-extension) tension tester. While the
crosshead is moved at a specified rate, the maximum force measured during unwinding of approximately 150 mm [6 in.] of tape
is taken as the unwind force.
1
This test method is under the jurisdiction of ASTM Committee D10 on Packaging and is the direct responsibility of Subcommittee D10.14 on Tape and Labels.
Current edition approved April 15, 2021Nov. 1, 2021. Published April 2021April 2022. Originally approved in 1979. Last previous edition approved in 20182021 as
D3811/D3811M – 96 (2018).D3811/D3811M – 21. DOI: 10.1520/D3811_D3811M-21.10.1520/D3811_D3811M-21A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3811/D3811M − 21a
5. Significance and Use
5.1 This procedure simulates hand and machine unwinding of tape at low rates. The force required for unwinding at low rates is
a function of rate. At some rate (expected to be different for each construction type and manufacturer) there occurs an inversion
of the response. The rate for this test method does not allow for comparisons of different tapes that will be unwound at high rates.
5.2 This procedure can be used to indicate satisfaction where a specification for unwind; either maximum, minimum, or mean;
is established and when the responses referred to in 5.1 are taken into consideration.
6. Apparatus
6.1 Unwind Force Tester—A CRE tension tester shall be used. The tester shall have two clamps with centers in the same plane,
parallel with the direction of motion of the stressing clamp, and so aligned that they will hold the specimen wholly in the same
plane; a means of moving the stressing clamp at a uniform rate of 5 6 0.2 mm/s [12.0 6 0.5 in./min]; and an autographic device
for recording load. The instrument shall be calibrated to an accuracy of 0.5 % full scale. The scale range used for any test shall
be such that the mean test level falls within 20 to 50 % of full scale.
6.2 Free-Turning Spindle, sized to fit snugly inside the sample tape core, with its axis horizon
...