Woodfree uncoated paper (WFU), uncoated woodfree paper (UWF) or uncoated fine papers are manufactured using wood that has been processed into a chemical pulp that removes the lignin from the wood fibers and may also contain 5–25% fillers.
Woodfree uncoated papers are of high quality and have a natural look and feel.
[2] They provide a non-glare surface suitable for reading and writing.
Surface strength and low linting are the main parameters, but brightness and opacity are also important.
Lightweight offset paper, also called onionskin, has a basis weight of 25–40 g/m2 and are normally used for bibles (hence the name Bible paper) and dictionaries.