The Manufacture of Paper / With Illustrations, and a Bibliography of Works Relating to Cellulose and Paper-Making

by R. W. Sindall

Class 10. Brown Paper, Cylinder-dried.

General Specification.—Machine-made.

Note.—The mean breaking strain required is given for each paper. The figures represent the mean of the results obtained for both directions of the sheet, and are calculated on a strip of paper two inches wide and having a free length of seven inches between the clips.

Class 11. Smallhands.

General Specification.—Machine-made. Engine-sized.

Class 12. Buff Papers.

Specification.—Highly finished both sides. Machine-made. Hard engine-sized.

Mechanical wood pulp must not be used in the manufacture of any papers, with the exception of engine-sized coloured printings, and buff papers, where an addition up to 25 per cent. will be allowed.

All animal tub-sized papers are required to be as far as possible free from earthy matter; and, except where specially stated, the amount of loading added to other papers must not exceed 6 per cent.