משמעות ושימוש
5.1 This process simulates manual and machine tape unrolling at low speed. The force required to unwind at a low speed is a function of speed. At some point (which is expected to vary for each construction type and manufacturer), a response inversion will occur. The rate of this test method does not allow comparison of different tapes that will unfold at high rates.

5.2 This procedure can be used to express satisfaction when a maximum or minimum expansion specification has been established and when the responses mentioned in 5.1 have been taken into account.

ASTM D3811/D3811M-2019 “Standard Test Method for Unwinding Force of Pressure Sensitive Tape”

שלב 1: תְחוּם
1.1 The test method covers a procedure for determining the force required to unroll a roll of pressure-sensitive tape.

1.2 Values expressed in SI units or inch-pound units shall be regarded as standard values respectively. ייתכן שהערכים המצוינים בכל מערכת אינם זהים לחלוטין; לָכֵן, each system needs to be used independently and the values cannot be combined in any way.

1.3 This standard is not intended to address all safety concerns associated with its use. באחריות המשתמשים בתקן זה לבסס בטיחות מתאימה, health and environmental specifications and to determine the applicability of regulatory restrictions prior to use.

1.4 תקן בינלאומי זה מבוסס על עקרונות תקינה מוכרים בינלאומיים שנקבעו בהחלטה על עקרונות לפיתוח תקנים בינלאומיים, Guidelines and Recommendations issued by the WTO Technical Barriers to Trade (TBT) Committee.

ASTM D3811/D3811M-2019 “Standard Test Method for Unwinding Force of Pressure Sensitive Tape”

2. Refer to the file
תקן ASTM

D996 Packaging and distribution environmental terms

D3715 / D3715M pressure sensitive tape quality assurance practice

D4332 תרגול ויסות מכולות, אריזה או רכיבי אריזה לבדיקה

E122 Practice of calculating sample sizes to estimate average values of batch or process features with specified precision