A transparent sheet placed over artwork allowing the artist to write instructions or indicate where second colour is to be placed. (see overlay)
Acetate is a clear or translucent plastic film that is used for many different purposes. It is frequently used by artists as a means of tracing images, and by printing companies as a way of making positive or negative copies of original artwork.
Acetate is made from cellulose, which is derived from plants. The most common type of cellulose used to make acetate is cotton linters, which are the inner fibers of the cotton plant. Other types of cellulose that can be used include wood pulp and paper pulp.
The manufacturing process of acetate begins with the extraction of cellulose from the plant material. The cellulose is then dissolved in a solution of acetic anhydride and sulfuric acid. This solution is then passed through a series of rollers which gradually thin the cellulose out into a film. The film is then dried and cut into the desired size and shape.
Acetate is available in a variety of thicknesses, ranging from as thin as 1 mil (0.001 inch) to as thick as 10 mil (0.010 inch). It is also available in a variety of colors, including clear, white, black, and a variety of translucent colors.
Acetate has a number of uses. As mentioned previously, it is commonly used by artists as a tracing medium. It is also frequently used by printing companies as a positive or negative copy medium. In addition, acetate is often used as a protective cover for artwork or as a window in packaging.
Acetate is a popular material used by artists and printing companies due to its versatility and affordability. Acetate can be used for a variety of purposes, such as creating stencils, printing designs, and protecting surfaces. Although it is not as durable as some other materials, acetate is still a popular choice for many artists and businesses.