Sealing adhesive is a type of tape used in our daily life, which is based on the original BOPP film and roughened on one side by high-voltage corona discharge. After being coated with adhesive, it is divided into small rolls of red by a fire strip. Therefore, the preferred strength of the adhesive tape depends on the quality and thickness of the BOPP film. The BOPP film made from raw material particles has good brightness and strong flexibility.
Packing Tape

The thickness of the general film is between 28 microns and 30 microns. The strength of BOPP film mixed with recycled materials will decrease, so the manufacturer will increase the thickness of the film. This type of tape feels thick to the touch, but has poor strength and a short shelf life. After being left for about six months, it will show significant aging, and the appearance will be brittle, making it easy to break during use.

The general sealing tape adhesive is acrylic pressure-sensitive adhesive. Many people think that the adhesive tape that feels sticky is good, but in fact, this is not correct. There are two standards for the quality of the sealing tape in use, one is the initial adhesion, and the other is the holding adhesion. Generally speaking, tape with low initial adhesion has less adhesive applied

The initial adhesion of normal sealing tape requires a thickness of 22 to 28 microns of adhesive. The adhesive tape mixed with impurities has a very high initial adhesion when there is no volatilization, so it is necessary to stick the object with tape and quickly swing it open to check the adhesion force. After repeatedly sticking it a few times and touching it with your hand, you will feel a significant decrease in adhesion.

When using adhesive tape mixed with impurities for adhesive formulation, it usually needs to be dissolved in gasoline and acid, so the odor is very strong. Good companies use methylbenzene to dissolve it, and it has already evaporated through the fan during the coating process.

In fact, the purpose of using box sealing tape is not to stick it firmly, but to stick it firmly without separation. Nowadays, most tapes with impurities will break open after packaging operations for a period of time and cannot be pasted again, especially in low temperature environments and dry conditions with wind.

Once again, defective tape is prone to breakage and has low strength, mainly related to the quality of the film. Therefore, when selecting tape, it is necessary to carefully consider the width and thickness of the tape.

Article organization: Sealing glue manufacturer www.hshangli.com