Approximately 400,000,000 expo markers get thrown out every year, causing a huge amount of waste to something that isn't recyclable or very sustainable. In conclusion, the expo marker is such a mass used product that is used universally throughout schools and offices. Then, it will be shipped to manufacturers, who purchased them. That plastic will be heated and suctioned from air, to create a tight seal against the markers. Another way is by laying the markers against a piece of cardboard, which is the background of the packaging, and placing a thin piece of plastic. This is typically done when bought in bulk, or larger amounts. The final raw materials to go over is that for packaging, Expo markers can be packaged by being placed upwards in cardboard boxes. It is now ready to be packaged for shipping. Using one machine for all the following functions, an assembler then places a polyester cylinder inside the marker barrel to form a reservoir for the ink, fills the reservoir with a measured quantity of ink, and inserts the nib at the bottom and the cap at the top. It is able to have an absorbent core, and it is filled up with as much ink as it can hold. A soft polyester material is then molded into a cylinder to then become the ink reservoir. Ink reservoir is the holder of the ink that is placed in the body and connected to the tip, in order to create the writing ability of the pen. Marker caps and plugs are formed in the same manner as the barrel or the “body”. Plastic resin is injected into a cap and marker body mold to create the body and cap pieces. Injection molding involves heating the plastic resin substance into a molten state and injecting it into a mold of the desired shape, then allowing it to cool off and harden. The outside parts of an Expo marker include the “body,” and the cap is what protects the market from not only drying out, but from getting dirty, etc. There is a huge lack of specific instructions found on the longer process of the making of the tip of the marker. Another way that the tip of the marker can be formed is by being made of porous, pressed fibers (felt), shaped into the tip. reveals that the tip of the marker is made from a powder which is mixed with water, molded, and baked into its pointed or flat form. The resin-processed pigment is a pigment coated with a resin, and is readily dispersible in an organic solvent, as is known. Erasable ink compositions says, however, a resin-processed pigment is usually preferred in the invention. Once this is done the pigments are added, for example, carbon black, phthalocyanine blue, phthalocyanine green, and permanent red 4R. They also help the ink stay continuously cohesive and stick to itself rather than the board surface. ![]() ![]() Polymers or resin are typically added into the ink to help it spread evenly and not have it bead up. ![]() Then having 2 conventional additives for example nonylphenol polyglycol ether, alkylpoly-glycol ether, fatty acid polyglycol ester, or fatty alcohol ethoxylates, with preservatives, like as ortho-phenylphenol and its sodium salt, ortho-hydroxydiphenyl, or 6-acetoxy-2,4-dimethyl-m-dioxane. The ratios were of 1-10% water by weight content, with the rest of the weight being carried by a solvent like alkyl or alkylene carbonate. Making of the dry erase ink, How Products are made revealed on how the ink mixture came to life. They are mostly used in classrooms, by teachers as a way to display and have a way for students to be active in lectures. ![]() Expo Markers are generally Dry Erase Markers that are able to erase easily with a dry cloth, a paper towel, or an expo eraser from surfaces like whiteboards, glass, and plastic. What really goes into making this simple stationary? How is the plastic and ink obtained, processed and disposed of during the small pens lifetime and how is it affecting our Earth's environment?”Įveryone knows the infamous Expo marker, used for white boards, as a way to “upgrade from the chalkboards that were previously used in the past. Let's dive into what goes into the material aspect of an Expo marker. How do they work? Why do they dry out so fast? How many do teachers go through every year? What are they made of? Expo markers being mostly plastic typically end in landfills, creating a lot of plastic waste with very little ink to be used. The Expo Dry Erase Marker, the holy grail for teachers. Mahika Nagarkar-Jain, Rachel Murphy, Nelsy Perez
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