The raw materials of a typical toothbrush include a plastic handle, a rubber grip attached with adhesive and nylon bristles. Toothbrush handles are usually made from a type of plastic called Copolyester, which can withstand the effects of mint oil on most plastics and is safe for toothpaste.
Toothbrush manufacturing has evolved in line with technological advancement. In the process of creating the modern toothbrush, Copolyester material is melted down into an ergonomic handle, angled for easy use. Manufacturers then concern themselves with attaching rubber accenting and arranging an eye-catching color schemes. They drill small holes into the head of the brush, and boxes of completed toothbrush handles are sent to a bristling factory.
Nylon bristles have been in use since the 1930s. Factory machines load the brush with bristles, and they are trimmed and polished. Once they are a uniform height, the bristles are shaped and rounded. The finished toothbrush is then packaged for sale.
Toothbrush manufacturing has evolved since the early 20th century when handles were made of wood and bristles came from the necks of swine or crafted from other natural materials, such as horse hair. Scientific research into the durability and efficiency of materials led to advancements in toothbrush design and manufacture.