The principle and process of screen printing are used. The screen printing ink is squeezed through a layer of nylon cloth with graphics (holes). The ink is printed on the object through the small holes in the cloth to form an image. The number of holes per square inch determines the quality of the print and also affects the rheological properties of the ink.
Before printing, the ink is laid flat on the screen and cannot be dropped through the mesh. This requires that the ink has a higher viscosity under the action of low shear force and does not flow under the action of gravity. In use, when the roller is pressed over the mesh, the ink is squeezed and passes through the mesh.
In this way, the ink must be sheared and thinned under the action of external force. Under the action of external force, the original structure can be quickly restored, and the viscosity is high, and the ink will drip through the mesh without being placed. When the roller passes through the mesh cloth and presses the mesh cloth onto the printed matter, the ink will be distributed to the object in the form of ink dots according to the distribution of the holes on the mesh cloth. At this time, the length of time that the ink structure recovers is critical. If it is too short, it will cause shortcomings. If it is too long, it will cause scattered points. Both of these situations will cause a reduction in image clarity.
Rheological performance analysis
The skin-care community has been on a bit of an anti-makeup wipe crusade over the past few years. Sure, I get it. Face wipes should not be a permanent replacement for your sink-side cleanser, but they can be useful in certain situations.
In a pinch, they`re a great solution to a variety of on-the-go cleansing issues. Haven`t you ever been traveling and realized you had no way to remove your makeup? Or felt super grimey at the airport? While I try not to have a face wipe act as my only cleanser, I sometimes use them to scrub the top layer of makeup or dirt off my skin.
Face wipes are also fantastic for fixing minor mistakes so you don`t need to restart your entire face if you mess up a step (liquid eyeliner, anyone?). I keep a package or two on hand to clean up swatches when I`m playing with my makeup collection or to bring on vacation.
The key is to find wipes that won`t irritate your skin and actually do the job of removing dirt, oil, and makeup without much tugging. It`s true that many face wipes are bad for the environment, so look for biodegradable options, especially if you plan to use them frequently.
Plant based Wipes made with plant fibres. Compostable Wipes which are plastic free.
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Zhejiang Youquan Care Products Technology Co., Ltd. , https://www.youquancare.com