SE323279BSE9321/66ASE932166ASE323279BSE 323279 BSE323279 BSE 323279BSE 9321/66 ASE9321/66 ASE 9321/66ASE 932166 ASE932166 ASE 932166ASE 323279 BSE323279 BSE 323279B
Authority
SE
Sweden
Application number
SE9321/66A
Inventor
A Heald
G Dickinson
Original Assignee
Sonoco Products Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sonoco Products CofiledCriticalSonoco Products Co
Publication of SE323279BpublicationCriticalpatent/SE323279B/xx
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C3/00—Pulping cellulose-containing materials
D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
D21C3/12—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites sodium bisulfite