An expert in PVC tarpaulin / PVC film industry since 2002

How to reduce protective film (Tape)Common data deviation

by:LINYANG     2019-12-23
Data collection is the necessary foundation for every enterprise and the data source and guarantee for enterprises to implement MES. In order to ensure the stability and high efficiency of the production process, enterprises must collect and monitor the data in the production process in real time. Only by accurately collecting and effectively integrating all kinds of information in the manufacturing process can we accurately grasp the dynamic information in the manufacturing process in time, thus providing support for improving the production efficiency and the utilization rate of manufacturing resources. Question 1: Is it feasible to have a temperature of 26 degrees and a humidity of 65% in the laboratory? Why? Viscosity increases with the increase of temperature, which is a common view. In fact, this is a misunderstanding. The test temperature commonly used in the industry is 23 2 ℃ (Standard provisions) In fact, different systems of glue have different sensitivities to temperature. For our industry, the temperature range of 23 2℃ is only for everyone to get the same data, some glues may be higher and more sticky, or the lower the temperature, the more sticky, it is possible that you can't make a decisive judgment on the data because of the high or low temperature today, if the laboratory does not carry out temperature control, the test data is of little significance; Is it specifically related to the physical properties of glue and the material system? Question 2: The fitting method is fast and slow. Can you press the wheel weight with force? Is the picture correct? Why? Too fast speed, uneven pressure and inclined materials are all direct causes affecting the data. So don't mention, don't press, uniform speed is the best way to fit? The standard rolling speed is: 300/600 mm/min wheel weight pressure: 2kg Question 3. How is the placement time after fitting distinguished? What is the biggest difference between the new standard and the old standard? The old standard is: put it for 20 minutes after fitting. The new standard is: Completed within 1 minute after fitting? Question 4: reset before the test many people think that after I install the materials and reset them, I can test them. This mistake is too big, which may cause the same sample, you test 3 times, 3 times the data are completely different! The main reason for this is that your test has different force to clear the zero point. Remember: Be sure to let the material relax before clearing the test! ! ! Wrong zeroing method: correct zeroing method: Question 5. Influence of test plate. How many test plates are there? There are mainly three kinds of test steel plates. One is the mirror panel commonly used in the industry. At present, the roughness is 10nm ± 5nm. The surface roughness and surface energy of the Test steel plate are basically the same as those of the mobile phone glass screen, therefore, it is recommended to use it on a low-viscosity protective film. The other is to implement fog panels in the current new standard, and the control is roughness 50nm 25nm. (Picture 2) This test Steel Plate meets astm gb jis finat pstc and other international common test standards. The third is a grinding plate currently used by some foreign customers without roughness. Some people will ask, the higher the roughness, the lower the data? My answer is very direct: not sure, the size of the peeling force depends on two aspects. First, the material, since they are all 304 stainless steel plates, the material is the same, there is little difference here. Second, contact area, the larger the contact area, the greater the peeling force. At this time, the problem comes. Do you know the hardness of your adhesive layer? Question 6, with medical alcohol, industrial alcohol 85% can wipe the steel plate? Can I wipe the steel plate with ordinary white cloth or hard paper? At present, everyone in the industry mainly uses anhydrous alcohol concentration: 99. 7% but this standard does not indicate that this can be used. Since the industry is using it, I also support it relatively, but it must be noted that the steel plate must be placed after wiping. The most important reason is that, alcohol volatilizes and absorbs heat. Everyone who has tested it knows that the steel plate is cold after wiping. Therefore, if you stick the material on it, it will definitely have a great impact. As for the wiping materials, many of them use dust-free cloth. The best materials are puree paper and dust-free cloth. Please try to use pure cotton or high cotton content instead of pure chemical fiber, high hardness, the surface of the steel plate is easy to wipe, this kind of appearance is also more common. Question 7. Customer tests low-viscosity protective film, KJ- Is it feasible to use 20KG sensor for 1065A? Why? Is the smaller the range of the sensor, the higher the accuracy? 1) First of all, in principle, it must be, no doubt! But pay attention to a few questions, what is your test force, the best choice of sensor capacity is :(Test Force, connector)In the capacity of the sensor 10%-Between 85% is the most accurate! The connector must not be ignored here. It is the so-called upper clamp. This thing must give you the gravity of the sensor. If it is not very matched, it is easy to cause your sensor to deform, therefore, it cannot be cleared or accurate, adding a little force measuring principle: external force is attached to the sensor, causing the sensor to deform, thus transforming into digital signal transmission! And there is another reason, the moment the machine moves, the inertia will give the sensor more deformation! I have seen some customers use 1kg sensors with a large 400g- 500g clamp, how long can you use such a sensor? The sensor that suits your product is the best! 2) The influence of the external environment: at present, the general fluctuation of the environment I am exposed to is 0. 1-0. 2g, if the equipment is not shielded and the precision is sufficient, your equipment will definitely not be cleared. If it can be cleared, otherwise your machine will not have enough precision, if it is not shielded, I have worked as a national laboratory, bottom line, voltage stabilizer, full isolation and shielding of the room, 5cm thick rubber cushion on the ground and table top, and the external fluctuation that can be achieved is 0. Within 05g, so don't struggle with this fluctuation. There are almost no materials that can make such low errors.

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