Standard Test Method for Evaluating Load Containment Performance of Stretch Wrap Films by Vibration Testing

SCOPE
1.1 This test method is used to evaluate and compare the ability of stretch-wrap films to contain unitized loads during shipping.  
1.2 This standard does not purport to address all of the safety problems, 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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Status
Historical
Publication Date
14-Jul-1995
Technical Committee
Current Stage
Ref Project

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ASTM D5415-95 - Standard Test Method for Evaluating Load Containment Performance of Stretch Wrap Films by Vibration Testing
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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: D 5415 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Evaluating Load Containment Performance of Stretch Wrap
1
Films by Vibration Testing
This standard is issued under the fixed designation D 5415; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope distribution system, such as mechanical handling, are not
addressed specifically in this test method.
1.1 This test method is used to evaluate and compare the
4.3 This test method establishes a method for rating the
ability of stretch-wrap films to contain unitized loads during
performance of films, but it leaves open to the discretion of the
shipping.
user the establishment of an acceptable rating for the specific
1.2 This standard does not purport to address all of the
end-use intended.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
5.1 Load Wrapping Apparatus—A machine or apparatus to
bility of regulatory limitations prior to use.
wrap the test load. The method of wrap application is prefer-
ably as near as possible to that used in an actual production
2. Referenced Documents
situation (stretch wrapper or manual wrapping unit).
2.1 ASTM Standards:
5.2 Vibration Table—A vibration testing apparatus con-
D 996 Terminology of Packaging and Distribution Environ-
forming to Method D 999, preferably equipped with the
2
ments
capability of varying the frequency or amplitude, or both, of
D 999 Test Methods for Vibration Testing of Shipping
vibration input in a controlled fashion and maintaining a set
2
Containers
vibration mode.
5.2.1 The table shall be large enough and have a weight
3. Terminology
capacity sufficient to hold an entire wrapped shipping unit.
3.1 Definitions—General definitions for packaging and dis-
5.2.2 The table should have a means for attaching the
tribution environments are found in Terminology D 996.
bottom of the wrapped test unit securely to the table (for
3.2 Definitions of Terms Specific to This Standard:
example, threaded holes in the table surface for bolting a pallet
3.2.1 amplitude—the maximum value of a sinusoidal quan-
securely to the table).
tity (zero to peak).
5.3 Accelerometer (optional), to measure the output re-
3.2.2 resonance—a system of forced vibration existing
sponse of the test load at various vibration table input frequen-
when any change, however small, in the frequency of excita-
cies. This is the most accurate way of determining the resonant
tion causes a decrease in the response of the system.
frequency of the test load.
4. Significance and Use
6. Procedure
4.1 This test method is intended to be used mainly as a 6.1 Prepare the test load. Arrange the units comprising the
means of comparing the performance of stretch-wrap films. It
test load in layers and stack them in the manner normally used
can also be used to compare the effectiveness of different wrap for shipping the product.
cycles with the same wrapping materials. No direct correlation
6.2 When the units are normally shipped on pallets, stack
between these test results and actual field performance has the units on the pallet in the normal manner.
been established.
6.3 When the units are normally shipped on slip sheets
4.2 This test method simulates the shipping of unitized without pallets, stack the units on slip sheets and affix the
loads by way of truck and rail, concentrating on the vibration
bottom layer to the slip sheet in the normal manner (glue, hot
element associated with these modes. Other elements of the melt adhesive, and adhesion promoter). The slip sheet should
have been fixed previously to a pallet surface to provide a
means of securing the load to the vibration table.
1
This test method is under the jurisdiction of ASTM Committee D-10 on 6.4 Wrap the test load with the stretch-wrap film at a
Packaging and is the direct responsibility of Subcommittee D10.25 on Palletizing
predetermined percent stretch and wrap cycle.
and Unitizing of Loads.
6.5 Allow the wrapped load to stand undisturbed for a
Current edition approved July 15, 1995. Published September 1995. Originally
minimum of 16 h before testing. This gives the stress retention
published as D 5415 – 93. Last previous edition D 5415 – 93.
2
Annual Book of ASTM Standards, Vol 15.09. forces in the stretched wrapping material time to equilibrate.
1

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