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How to see the thickness of the plastic bag?

by:Supouches Packaging     2022-08-17
How to see the thickness of the plastic bag? 1. The first thing to know is the thickness unit of the plastic bag. What is the thickness unit of the plastic bag? The thickness unit of the plastic bag is usually“Silk”As a unit of measurement, 1 wire is 0.01mm, but some companies also use microns as a unit of measurement, 1um (micron) = 0.001mm (millimeter). 2. What is the general thickness of the plastic bag? The thickness of the plastic bags we use every day is different according to the style and function, but they are usually between 0.025mm-0.15mm, that is, 2.5 to 15 wires. Since my country issued a plastic restriction order in 2008, the thickness of the plastic bag must reach 0.025mm or more. Above this thickness is called an environmentally friendly shopping bag, and less than this thickness is called an environmentally friendly shopping bag.“thin bag”or“Ultra thin bag”. In fact, the thickness of the plastic bag can be customized, from 0.0075mm to 0.15mm. The size of the plastic bag can also be customized, according to user needs, there is no fixed size. Generally, bags less than 0.025mm are usually functionally special or have a very large consumption, such as garbage bags and fresh-keeping bags, usually with a thickness between 0.01mm and 0.02mm. 3. How to measure the thickness of the plastic bag? Generally, a film thickness gauge is used for measurement, and the measurement is generally the thickness of one side of the plastic bag. The correct measurement method is to measure the thickness of several different positions and then take the average value, because if the general plastic bag has no special purpose, the thickness will not be controlled very accurately, and there is usually 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. Plastic bag thickness measurement methods and tools 1 Plastic bag thickness measurement tools Generally, there are two types of tools used to measure the thickness of plastic bags according to different accuracy requirements, namely film thickness gauges and high-precision film thickness gauges. If it is an industrial plastic bag or a plastic bag such as a shopping bag, 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 plastic bag or a pharmaceutical plastic bag, which has relatively 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 plastic bag The simple measurement method is to directly use the instrument to measure the single layer of the plastic bag, and take the average value after measuring several times. Some plastic bag factories have laboratories for testing packaging bags. It is more complicated to perform thickness quality testing in the laboratory. It is necessary to use a high-precision thickness measuring instrument for multiple measurements, and then calculate according to the formula. Accurate bag thickness. Measuring the thickness of the plastic bag: END professional custom plastic bag plastic bag / non-woven bag PE/PO/PP/CPE/PPE/OPP/PVC/EVA scan QR code to consult the quotation
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