1. Smell the odor

Check if the sealing tape has a significant sour odor. If it does, it is a defective tape coated with defective adhesive.

2. Look at the colors

To the naked eye, it appears yellow. This BOPP material is relatively poor, usually light yellow or slightly white, which is better. It indicates that it contains fewer impurities, has high purity, and corresponding toughness.

3. Measure the tension of the sealing box tape

Pull out a portion of the tape and swing it aside by hand to see if it can withstand strong pulling.

4. Measure the viscosity of the sealing box tape

Usually, manual testing is sufficient. Pull a roll of tape and stick it onto the cardboard box before tearing it off to see if the cardboard is peeled off together. If they are peeled off together, it is confirmed that the adhesive strength of the tape is good. Be careful not to use the palm of your hand to test the adhesive strength of the tape, be sure to test it on the cardboard box.

5. Measure the thickness of the sealing box tape

The thickness of adhesive tape on the market usually ranges from 40u to 60u (the thickness of BOPP film taught by adhesive), and of course, the quotation also varies greatly. The 60u tape is very solid, but for the same thickness of meat, the length is shorter. The 40u tape is longer, but very thin and easy to break.

6. Measure the length and width of the entire roll of sealing box tape

Due to the difficulty in measuring the length of tape, many tape lengths on the market are falsely reported. Even tape with the same thickness can have different lengths due to factors such as paper tube thickness, thickness, and wrapping tightness. Therefore, it is still necessary to operate it in practice before feeling the durability of the tape.

Article organization: Sealing glue manufacturers www.hshangli.com