How to distinguish the quality of tape?

by:CROWN     2021-10-03

There are two standards for tape quality, one is the initial adhesion and the other is the retention. The two standards are inversely proportional. Under normal circumstances, the adhesive force of adhesive tape is less than that of No. 10 adhesive, usually only about 20 microns, such as stationery tape and ordinary tape used to promote and bond. [Stretch film production] Mode characteristics and main control elements!

The initial adhesion of ordinary tape is between 15-20, and the thickness of the tape is usually 22-28 microns. The thickness meets the standard. However, most of the tapes on the market are mixed with impurities, so the thickness will increase. In order to shield impurities, glue is also mixed with toner, so the transparent tape is egg-yellow and light green. The tape is usually of poor quality.

For colored tape, yellow and khaki are usually more common. After tightening the glue, pull the glue from one side, and then quickly pull it apart, you can see the purity and transparency of the original film. You can also check the thickness of the glue. If the glue is not pulled out or pulled into small spots, one of the glues contains a lot of impurities, and the glue has no adhesion. Secondly, too much water evaporates. At this time, the initial adhesive force of the tape has been greatly reduced, and the hand feel can be distinguished. In fact, there are many ways to distinguish a good tape from a bad tape. As long as you pay more attention to your life, you can distinguish good tapes from bad tapes.

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