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Common bopp packing tape huatai packing industry co.,limited |
| Author： Date：2013-10-08 1:17:17 |
General packing sealing tape (BOPP BOPP) tape is any enterprise, company, personal life indispensable supplies, because of their technical content is not high, many domestic manufacturers, so products on the market mixed. Moreover, our domestic industry still stuck in the tape very low-tech stage, the state of the tape has not a perfect standard. Many consumers know that tape is cheap, feel better viscosity, in fact, this is wrong. BOPP tape is based on the original film after making high-voltage side of the surface roughness after the halo after the adhesive covered with water after sub-section is divided into small paper tape that we use every day, so the first tape of the BOPP film is good or bad depends on the strength and thickness using the raw material particles produced BOPP film brightness is good, flexible and strong, less impurity spots, produced by the film tape, general business Toner for impurities are not mixed with shelter, so transparent tape product is a pure white color. Finished in about a week after placing 100-meter high transparent tape below. General film thickness of 28 microns -30 microns, but some mix of recycled materials BOPP film strength decreases, only increases the thickness of thick films, this tape feels very thick handle, but the strength of poor preservation very short period, place about half a year of aging will be apparent, the surface of brittle, easily broken to use. General sealing tape adhesive is acrylic glue, also known as PSA, the main components of tincture fat. Tincture is a polymer resin material and activities, high and low temperature has some influence on the molecular activity. Tincture glue directly affect the lipid content of the use of tape, and many individuals that feel sticky tape to glue well, actually this is wrong. Adhesive tape good or bad there are two standards in use, one tack is to maintain a force, the two are inversely proportional. In general, lower than the 10th Division tack adhesive cover tape is coated to teach less, generally only about 20 microns, such as stationery tape, adhesive tape used for general promotional bundle. Normal packing tape tack in between 15-20, that the thickness of adhesive tape are 22-28 microns. Is the standard thickness. However, the tape currently on the market most of the impurities in mixing, so the thickness increases, the shielding of impurities, the glue was also mixed with dye, so transparent tape on the emergence of egg yellow, light green, this tape is generally poor. The colored tape to distinguish the bad? For color marking tape is to facilitate and shielding purposes, the general beige and khaki more. Colored tape a lot of people think that is the color film, in fact, color is the color of glue. Will stick clenched and then quickly opened, you can pull off the side of the plastic, you can see the purity and transparency of the original film. The most important thing is that the thickness of glue. If there is no glue to be pulled or spot-opened, the glue in the first, a large number of impurity, glue no cohesion. Second, too much water has been volatile, then the tack of adhesive tape that has fallen very far, feel able to tell. Follow the yellow tape coated object, the better the glue covered the thicker, the better the quality. A comparison of the appearance of tape, glue less, the quality of the tape the whole doping volume very dark in color, pull tape after the high light transmission. Good tape and pulled a roll of color after the color of a little difference, because there are extremely good shielding tape sex, color overlay of the situation does not exist. Dopants impurities to the poor quality of tape to the BOPP film coated only with the direct glue backward way, I often have large particles is not completely dissolved impurities card knife situation there, so tape is in use on the often lines (1 Road where there is no glue). Good soft cut the transfer tape adhesive manner, there is no line conditions (printed tape printed on the situation there Loumo less concerned with the printing press). Another distinction is to look at tape surface, tape has just been divided into the finished article when the bubbles are placed bubbles basic will disperse after a week of pure glue tape tincture fat smooth surface, no white spots. Mixed with impurities of the tape there are many irregular distribution of white spots, not dispersed by hand pressure, is not the same bubble. In summary, we look at on tape from the tape has been basically able to judge good or bad, and then a resolution of the most important conditions for good or bad tape is not to feel alone feel the viscosity of the quality of the tape because of doping is not essential in the early time tack is very high, so use the object and then quickly pulled taped and keeping power, repeated several times and then paste the hand touch, feel picked on significantly decreased. Dopants for adhesive tape formulations are generally required when the petrol and acid dissolution, so the smell is very large, formal dissolution of large enterprises are using toluene, in the coating process had been a fan essential. |
