Why is the tape tearing so loud

2024-01-13 17:30
seventy-eight

Sometimes, people use transparent tape to seal the package and express delivery, but as long as the tape is pulled, it will make a harsh "smell" sound. I can't make such a big noise when I knead the plastic bag. Why is the small tape so loud?

If you observe carefully enough, you will find that after you tear the tape vigorously, there are always horizontal lines on the transparent tape, which indicates that the separation speed of the tape is different.

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The reason is that the adhesive material on the tape is elastic. When the tape is torn off the packaging surface, the adhesive material will stretch like a spring and will not be broken immediately. Only when continuous force is applied, the adhesive material can not withstand greater tension, and will "snap" away from the attached part.

Don't underestimate this "Pa". The high-speed camera has caught that the split part of the bonding material will move at a speed of 650~900 m/s, faster than the speed of sound. This means that when you tear the tape, you will release a series of small supersonic shock waves, namely mini sonic booms. When pulling the tape, the harsh ". la" sound is the result of repeated mini sonic booms.

Egret Electrical Appliance ——One stop service provider of tape in the whole industry chain

Aluminum foil tape mesh ——Professional R&D and production of aluminum tape for 27 years

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