What materials are paper plates made of?
heavy duty paper sometimes they are coated with wax or paraffin to make them somewhat waterproof Other disposable plates - which is what I believe you meant anyway - are made from styrofoam or kinds of plastics.
Paper plates are made of byproducts of the paper making process. Cellulose, oil, resin and various wood chemicals. The designation paper plates generally refers to all disposable plates. 57% of so called "paper plates" are made of polystyrene, which although not biodegradeable us much less energy to manufacture.
Printing processes such as offset printing use printing plates to transfer an image to paper or other substrates. The plates may be made of metal, plastic, rubber, paper, and other materials. The image is put on the printing plates using photomechanical, photochemical, or laser engraving processes. The image may be positive or negative. http://www.ezeeprinting.com/page/pulpboard-coasters
In addition to the traditional pumpkin carving, there are many cute pumpkin decorations that can be made with materials like paper plates and construction paper. Instead of the mess of carving a real pumpkin, why not cut one out of orange paper? You could also paint jar lids orange and decorate them as pumpkins.
Paper towels are made of the same materials and the same process as paper. Materials such as wood and plant substances are mashed together until they have made small plant fibers. The plant fibers are made of a chemical called cellulose, which makes wood strong. Once the fibers are pressed into sheets and dried, they are ready to use.