The thickness range and measurement method of plastic packaging bag
s 1. What is the thickness unit of plastic packaging bags? The thickness unit of plastic packaging bags is generally used“Silk”As a unit, 1 wire is 0.01mm. Of course, microns are also used as units in some places, 1um (microns) = 0.001mm (millimeters). 2. What is the general thickness of plastic packaging bags? The thickness of the plastic packaging bags we use every day is different according to different styles and functions, but they are basically between 0.025mm-0.15mm, that is, 2.5 to 15 wires. Because the country issued a plastic restriction order in 2008, the thickness of plastic packaging bags must reach 0.025mm or more. Above this thickness is called an environmentally friendly shopping bag, and below this thickness is called an environmentally friendly shopping bag.“thin bag”or“Ultra thin bag”. In fact, the thickness of plastic bags can be customized, from 0.0075mm to 0.15mm. The size of plastic bags can also be customized, according to user needs, there is no fixed size. However, bags below 0.025mm are generally used with special functions or a large amount of use, such as garbage bags and fresh-keeping bags, and the thickness is basically between 0.01mm and 0.02mm. 3. How to measure the thickness of plastic packaging bags? Generally, a film thickness gauge is used for measurement, and the measurement is generally the thickness of a single layer of plastic bags. The correct measurement method is to measure the thickness of several different positions and then take the average value, because if there is no special purpose for general plastic packaging bags, the thickness will not be controlled very accurately, and there will usually be a thickness error of about 5%. The thickness of a 10-wire plastic tote bag is measured to be 9.5 wires or 10.5 wires, which are all errors within the normal range. Packaging bag thickness measurement methods and tools 1 Packaging bag thickness measurement tools Generally, there are two types of tools used to measure the thickness of packaging bags, which are film thickness gauges and high-precision film thickness gauges. If it is an industrial packaging bag or a shopping bag and other packaging bags, if the accuracy is not high, you can only use an ordinary film thickness gauge for measurement. The accuracy of this type of thickness gauge is generally 0.001mm. If it is a food packaging bag or a pharmaceutical packaging bag with high packaging requirements, it is necessary to use a high-precision film thickness gauge for measurement. The accuracy of this type of thickness gauge is generally 0.1um, that is, 0.0001mm. Film thickness gauge: high-precision film thickness gauge: 2. The thickness measurement method of the packaging bag The simple measurement method is to directly use the instrument to measure the single layer of the plastic packaging bag, and take the average value after measuring several times. It is more complicated to carry out thickness quality inspection in the laboratory. The method is as follows: about 1m from the longitudinal end of the sample, take the sample along the entire width of the transverse direction, and the width of the sample is 100mm. The surface of the sample should be free from wrinkle, oil, dust and other contamination. Determine where to measure the thickness by aliquoting the length of the sample, as follows. a. Sample length≤300mm, measuring 10 points. b. The length of the sample is between 300-1500mm, and 20 points are measured. c. Sample length≥1500mm, should be measured at 50mm from the edge. After the measurement, the results are calculated by formula. Measure the thickness of plastic packaging bags: END professional custom packaging bags plastic bags/non-woven bags PE/PO/PP/CPE/PPE/OPP/PVC/EVA scan QR code for consultation
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