Peel test device, method for evaluating impact peel property of adhesive tape
A technology of peeling test and adhesive tape, applied in the direction of measuring device, strength characteristics, using mechanical device, etc., can solve problems such as inappropriateness, and achieve the effect of suppressing unbalance and suppressing deviation
Active Publication Date: 2012-09-05
NITTO DENKO CORP
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Problems solved by technology
[0007] However, the evaluation method of the above-mentioned impact peeling property is a method of evaluating whether the adherend is peeled by using the impact of a rigid body dropped from a predetermined height or changing the drop height of the rigid body step by step before the adherend is peeled off. Therefore, although it is effective as a practical test, it cannot be said to be a quantitative evaluation method, and it is not suitable as a method for evaluating the characteristics of the adhesive tape with respect to the instantaneous load caused by the impact.
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[0036] Below, refer to Figure 1 to Figure 4 The first embodiment of the present invention will be described.
[0037] Such as figure 1 As shown, the peeling test device 1 of the first embodiment performs a peeling test in which the adherend I is peeled by applying an impact to the peeling test device 1 to which the adherend I is pasted via the adhesive tape III. It is not particularly limited as a member for applying impact, for example, it can be used figure 1 Shown is a drop tester A that drops a rigid body C from a predetermined height. The drop tester A has an arm B for raising the rigid body C to a predetermined height, and an electromagnet temporarily generating magnetic force by energization is provided at the tip of the arm B. In addition, the rigid body C is preferably formed of a material that can be attracted by an electromagnet. For example, steel balls made of steel can be used.
[0038] The rigid body C is attracted to the front end of the arm part B genera...
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Provided are a peel test device which continuously detects the properties of an adhesive tape from the moment of an impact applied to an adherend to peeling of the adherend and a new method for evaluation which allows quantitative evaluation of impact peel properties of the adhesive tape using a test result obtained by the peel test device. The peel test device (1) is provided with a body portion(2) to have the adherend (I) adhering thereto through the adhesive tape (III) and performs a peel test with the impact applied to the adherend (I). The peel test device (1) is characterized by comprising a load detection means (6) which detects the change of the load applied to the adhesive tape (III) until the adherend (I) peels from the body portion (2) and a displacement detection means (7) which detects the change of the moving amount of the adherend (I) until the adherend (I) peels from the body portion (2).
Description
technical field [0001] The present invention relates to an apparatus for evaluating peeling characteristics of an adhesive tape by impact, an evaluation method thereof, and also to an adhesive tape and a mobile device. Background technique [0002] In the past, the evaluation of the release characteristics of the adhesive tape has been using a dynamic evaluation method that evaluates the stress when the adhesive tape is peeled from the adherend to which the adhesive tape is attached. A static evaluation method that evaluates changes in the state over time. For example, as a dynamic evaluation method, a method of peeling off the tape from the adherend at a predetermined speed for a tape-shaped adhesive tape with one end side attached to the adherend is used. The stress (adhesive force) at the other end side was evaluated. This evaluation method is known as a 90-degree peel test and a 180-degree peel test. The 90-degree peel test is the stress when the other end is peeled of...
Claims
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IPC IPC(8): G01N19/04
CPCG01N19/04G01N2203/0091G01N3/24Y10T428/28
Inventor 赤松秀城沼香织杉原保则吉田纯二
Owner NITTO DENKO CORP