Woodfree uncoated paper
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.[1] Both softwood and hardwood chemical pulps are used and a minor part of mechanical pulp might be added (often of aspen or poplar). These paper grades are calendered.
Properties
Woodfree uncoated papers are of high quality and have a natural look and feel. The properties are good strength, high brightness and good archival characteristics.[2] They provide a non-glare surface suitable for reading and writing.
Special types
Offset paper is a WFU paper with ISO brightness > 80% and a basis weight of 40–300 g/m2. 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.
References
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- Paper engineering / Papermaking
- Battle of Talas
- Missal of Silos
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- Acid-free
- Air-laid
- Amate
- Asphalt
- Banana
- Bible
- Blotting
- Bond
- Bristol
- Carbon
- Cardboard
- Cardstock
- Cartridge
- Coated
- Construction
- Contact
- Copy
- Correction
- Cotton (rag)
- Crêpe
- Display
- Dó
- Electrical insulation
- Genkō yōshi
- Glassine
- Graph
- Greaseproof
- Hemp
- India
- Inkjet
- Ingres
- Korean
- Kraft
- Laid
- Lokta
- Manila
- Mummy
- Newsprint
- Onionskin
- Origami
- Paperboard
- Parchment
- Photographic
- Plastic-coated
- Red rosin
- Rice
- Rolling
- Scritta
- Security
- Seed
- Stone
- Tar
- Thermal
- Tissue
- Tracing
- Transfer
- Tree-free
- Wallpaper
- Washi
- Wasli
- Waterproof
- Wax
- Wood-free
- Wove
- Writing
- Xuan
and process
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- Commons
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