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

If it appears yellow to the naked eye, this BOPP raw material is poor, usually light yellow or slightly white is better, indicating low impurities, high purity, and corresponding high resistance.

3. Measure the tension of the sealing box tape

Pull out a portion of the tape 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, and be sure to test it on the cardboard box.

5. Measure the thickness of the sealing box tape

The thickness of the adhesive tape on the market usually ranges from 40u to 60u (the thickness of the BOPP film taught by the 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. The tape produced by Jinghua Tape Factory is a 52u film, with the best length and durability.

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 in the market are often falsely reported. Even tape with the same thickness can have different lengths due to factors such as paper tube thickness, thickness, and winding tightness. Therefore, actual operation is still necessary to feel the durability of the tape.

Article organization sealing glue manufacturer www.hshangli.com