“Woodfree uncoated paper”的意思、由来-开放百科全书

Woodfree uncoated paper (WFU) 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

1. ^The paper made without using mechanical pulp
2. ^{{cite book |last1=Paulapuro |first1=Hannu |authorlink1= |last2= |first2= |editor1-first= |editor1-last= |editor1-link= |others= |title=Paper and Board grades |url= |format= |accessdate= |edition= |series= Papermaking Science and Technology |volume= 18 |date= |year= 2000|month= |origyear= |publisher= Fapet Oy|location= Finland|isbn= 952-5216-18-7 |oclc= |doi= |id= |pages= 35–37 |chapter= 1|chapterurl= |quote= |ref= |bibcode= |laysummary= |laydate= |separator= |postscript= |lastauthoramp=}}