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We make rubber from rubber trees (natural latex) and from oil (synthetic rubber). We use both types of rubber in many products. Like the Mesoamericans (Aztecs and Mayans) before them, athletes and children today play with rubber balls. Of course, the most common use for rubber is in automotive tires. But pencil erasers, shoes, gloves, dental.
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Knowing the manufacturing processes can help you understand cost implications and tradeoffs. Some of the most common rubber manufacturing processes are extrusion, latex dipping, molding, and calendering. Extrusion begins with an unvulcanized compound being fed into an extruder. Once it's inside the extruder, it gets carried forward to a dye.
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1 Find an object that you wish to set in your mold. This could be a pinecone, toy figurine, bouncy ball, or any other relatively small object that you wish to duplicate. Don't worry about your object being too detailed - rubber molds are great at catching very intricate designs, so the details on your object should show up perfectly. [1]
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The raw materials to make rubber can be natural or synthetic. 32 million metric tons of rubber are produced annually and of that amount two-thirds are synthetic. Natural Rubber Natural rubber is made from liquid tree sap, latex, that comes from a variety of trees and plants. Most of the latex comes from the Hevea brasiliensis tree. Synthetic rubber
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Dandelion Dandelion milk contains latex. The latex exhibits the same quality as the natural rubber from rubber trees. In the wild types of dandelion, latex content is low and varies greatly. In Nazi Germany, research projects tried to use dandelions as a base for rubber production, but failed. [6]
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I set the original piece in a plaster mold. Once the mold was set, I put 100% silicone caulk in the mold and let it cure overnight. By morning I had another matching piece that worked fine. I am sure this technique could work for other hard-to-find rubber parts. —Eli Gluck, Brooklyn, N.Y.
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Natural Rubber | How It's Made Science Channel 4.64M subscribers Subscribe Subscribed 1.8K 369K views 10 years ago Enjoy the factory fun with this How It's Made: Natural Rubber music video. |.
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One of the easiest ways to make a substitute for rubber, or a type of putty, is to mix together corn starch, water and glue. When you add vinegar to the recipe, it causes the rubber to become too watery. Store unused portions of the cornstarch and water in the refrigerator. Make the Putty
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wikiHow 495K subscribers Subscribe Subscribed 4 613 views 3 years ago Learn how to make a rubber band bracelet with this guide from wikiHow: https://www.wikihow.com/Make-a-Rubber..more.
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Step 3. Add the correct amount of catalyst to the base. Most silicones use a 10:1 ratio of base to catalyst, but check the label on your silicone to make sure. If the ratio is 10:1, simply divide the base weight by 10 to determine the amount of catalyst to use. For example, 74 grams of base requires 7.4 grams of catalyst.
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The rubber made this way is pressed into slabs or sheets and then dried, ready for the next stages of production. By itself, unprocessed rubber is not all that useful. It tends to be brittle when cold and smelly and sticky when it warms up. Further processes are used to turn it into a much more versatile material.
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Latex is gathered from the trees by making a cut in the bark and collecting the runny sap in cups. This process is called tapping. In order to prevent the sap from solidifying, ammonia is added. Acid is then added to the mix to extract the rubber, in a process called coagulation. This can take about 12 hours.
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To make rubber at home you need the following things: Rubber tree sap, freshly taken from the tree Juice from a Morning Glory plant A knife A tapping spout A wooden stick A bucket A container How to Make Homemade Rubber Latex First, get the sap from the rubber tree. Observe the trunk of the tree and try to find spots with hardened sap.
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This process is accomplished by adding an acid such as formic acid to the latex. The coagulation process takes about 12 hours. Water is squeezed out of the coagulum of rubber using a series of rollers. The resulting thin sheets, about 1/8 inch thick, are dried over wooden racks in smokehouses. The drying process generally requires several days.