Book drying process
US5282320A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1991 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Aug 23, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H25/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The process for deacidification of at least one book or other similarly sized cellulosic product the steps of which include: PA1 a) predrying a plurality of books or other similarly sized cellulosic product; PA1 b) deacidifying the dried plurality of books or another similarly sized cellulosic product using a deacidification solvent solution; and PA1 c) drying the deacidified plurality of books or another similarly sized cellulosic product to reduce the solvent content by use of a vacuum, wherein high frequency radiation is used along with either or both steps a) and c) to aid in drying: in which the improvement comprises, dividing the plurality of books or a similarly sized cellulosic product into two or more sections with a material having a high power loss factor to reduce the variation in the high frequency electric field in a high frequency drier and promote uniform heating of at least one book or a similarly sized cellulosic product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.