General packaging sealing tape (BOPP biaxially oriented polypropylene downstream products) is any enterprise, companies and individuals are indispensable in life activities, but how to choose, many consumer awareness of the tape is cheap, in fact, feel good viscosity, this is all wrong.
The tape is based on the original BOPP film by corona discharge after the side surface roughness after coating glue after dividing into small volume is the tape we use in our daily life, so the first adhesive strength in BOPP film quality and film thickness, using BOPP raw material particles manufacturing good brightness, strong flexibility, less the impurity spots, using tape film production, enterprises in general are not added to the toner impurities covered, so transparent tape is finished in white color. After the finished product is placed about one week or so, the adhesive tape below 100 meters is transparent. The general film thickness at 28 microns -30 microns, but due to doping decreased BOPP film strength of recycled material, so only the thick film thickness, the tape feels feels very thick, but the strength is poor, the preservation period is very short, placed in about six months will appear aging condition, the surface will be crisp. Use easy to break.
The common sealing adhesive tape is acrylic glue, also called pressure sensitive adhesive. The main ingredient is tincture. Tincture is a kind of polymer active substance, and the temperature has a certain influence on the molecular activity. The content of tincture of glue has a direct influence on the use of adhesive tape. Many people think that the adhesive tape is good for the glue. In fact, it is wrong. There are two standards in the use of adhesive tape, one is the initial adhesive force, the other is the retention, and the two are inversely proportional. Generally speaking, the initial adhesive force is lower than 10 of the adhesive tape is less teaching, generally only about 20 microns, such as stationery tape, common promotion binding tape. The initial adhesive force of the normal sealing tape is between number 15-20, and the adhesive tape is usually 22-28 microns in thickness. It is in line with the thickness of the standard. But most of the tape on the market is adulterated with impurities, so the thickness is increased, which is covered with impurities and glue powder. So the transparent adhesive tape appears yolk, pale green, which is generally inferior.