How to identify the pros and cons of sealing tape
How to identify the pros and cons of sealing tape
Generic packaging sealing tape (BOPP biaxially oriented polypropylene downstream products) any business, company, personal life essential supplies, but how about the choice, many consumer awareness of the tape that is inexpensive, feel relatively viscosity well, in fact, this is wrong.
BOPP tape is based on the original film after corona surface roughness so that rear side adhesive coating after water has been divided into small sub-section volume tape that we use every day, so the strength of the first tape depends on the quality of BOPP film and thickness, the use of BOPP film material particles produced brightness is good, flexible and strong, fewer impurities spots, the film is produced by using tape, companies do not generally adding toner impurity shelter, so the finished product is a pure white color transparent tape. High transparency below 100 meters of tape placed finished a week or so later. Film thickness between 28 [mu] m -30 [mu] m, but some mix of recycled materials BOPP film strength decreases, so only increase the thickness of a thick film, such a tape handle feels very thick, but poor strength, save very short, about half will be placed visible signs of aging, the surface will be brittle, easily broken using.
Normal sealing tape adhesive is an acrylic resin glues, also known as pressure-sensitive adhesive, the main component of tincture fat. Tincture activity substance is a polymer resin, the temperature level has a certain influence on the molecular activity. Glue tincture fat content directly affect the tape usage, many individuals feel that the glue stick tape is good, in fact, this is wrong. There are good and bad glue tape in use two standards, one is the tack, is a holding force, the two are inversely proportional. Generally tack tape is less than 10 glue recoating teach less, generally only about 20 microns, such as stationery tape, general promotional bundled with tape. Tack normal sealing tape between No. 15-20, thickness of the adhesive tape are generally 22-28 microns. It is in line with standard thickness. But the tape on the market most of adding impurities, the thickness increases for shielding impurities, glue is also mixed with the toner, so transparent tape appeared egg yellow, light green, this tape is generally poor.
For colored tape how to distinguish bad? For colored marking tape is to facilitate and shelter purposes, the general beige and khaki more. Many people with tape colors are considered to be the color of the film, in fact, it is the color of glue. Will stick clenched and then quickly opened, you can pull off the side of the gum, you can see the purity and transparency of the original film. The most important is to see the thickness of the glue. If there is no glue dots are pulled apart or opened, this one has a lot of impurities in the glue, the glue is no cohesion. Second, too much water has evaporated, then this tape tack has been reduced very much, feel able to tell. The yellow tape coating applied to the object, the better the shielding glue thicker, the better the quality. In comparison tape appearance, the less glue, tape doped entire volume of deep color, high transmittance after tape pull. Good color tape the entire volume and opened after a little difference of color, because good sealing tape has strong shielding, color overlay situation does not exist. Dopant impurities to the poor quality of the tape is applied to the BOPP film, only the use of relatively backward glue directly on the way, so there is often a large dust particles are not completely dissolved card knife appeared so often in use tape there are lines (a road where there is no glue). Good soft cut transfer tape adhesive on the way, there is no line situation (printed tape Loumo small print with the press about the case). A further distinction is to look at the surface of the tape, the tape just after slitting into finished when there are air bubbles, place a week after the bubble will disperse basic, pure tincture fat tape surface smooth glue, no white spots. Adulterated tape had a lot of white spots irregularly distributed, hand pressure is not dispersed, the bubble is not the same.
In summary, all of the tape from the appearance of the tape has been basically able to judge good or bad, and then a tape to distinguish the most important condition is good or bad is not to feel alone feeling viscosity, because doped tape without volatile time tack is very high, so use adhesive tape to see an object and then quickly pull the holding force, repeated several times and then paste the touch, obviously feeling it twist decreased. Doped adhesive tape glue formulations are generally required when using gasoline and acid dissolution, so the smell is very large, regular large enterprises are using toluene dissolved in the coating process has been volatile through the fan. Another problem is the quality of the tape in use, there is what is the difference? In fact, we use live issue purpose tape is not sticky, but to stick firmly, not separate. After most of the impurity-doped now packing tape job during a period of time (20 minutes to 1 hour) will appear collapse opened the case, and can not be pasted again, especially at low ambient temperatures and windy dry conditions under more obvious. Again poor quality tape easily broken, low intensity, mainly related to the quality of the film. Regular production of paper tape are using higher density paper tube, cut no scraps of paper, and a thickness of 100 meters below the belt paper tube is 3 mm, more than 100 meters of 4-5 mm, and small businesses to hoodwink consumer use thick paper tube, usually thickness of 5-7 mm thickness, resulting in the appearance of relatively large, but very thick plastic clear comparative out. So I chose the case must be careful when the tape width and thickness of the tape of the tape, in addition note that due to the poor quality tape mixed with large amounts of impurities, so the time between points of the winding tape have imperceptible gaps, so the same number of meters under relatively large volume will be so deceived consumers.
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