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Significance and Use
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.
This procedure can be used to indicate satisfaction where a specification for unwind, either maximum or minimum, is established and when the responses referred to in 5.1 are taken into consideration.
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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
ICS Number Code 55.040 (Packaging materials and accessories)
UNSPSC Code 31201500(Tape)