HEMP PAPER RECIPE NOTES #2

This is the second part of the notes for a batch made in 1915 in Maine, using hemp hurds. The first part of this was posted on 3 August, 2006 on this site. That and other posts on hemp paper making can be brought up with a word search instantly.

Cook No. 142. Hemp tow from Judge Harry Olson of Illinois, grown in 1910.

315 lbs. at 89.03% bone dry = 280 lbs. bone dry

21.0% NaOH = 59.0 lbs. = 76.6 gallons.

92.4 gms. per liter: 89.6% causticity.

Cook about 21/2 hours at 90 lbs. Stock same as Cook 141.

Stock: by misunderstanding not weighed or sampled.

NaOH added 21.0

NaOH consumed 15.7

NaOH excess 5.3

The final process, utilising both this and the previous cook, was as follows:

Machine Run No. 73

Stock from Cooks 141 and 142. 310 lbs. bone dry.

Brush hard 6 hours, using washer 4 hours.

Bleach with 8.2% bleach.

Beat 7 hours, gradually lowering the roll to very hard brush.

Furnish:

Clay 30 lbs. = 9.6%

Size 12 lbs. = 3.8%

Alum 14 lbs. = 4.5%

Machines speed 26 ft.; deckles 28 inches; reeled sheet 27 inches.

Full calendar stock. Jordan on hard.

No cockle, no breaks, run very good; slow stock.

Roll 27" 248 lbs.

Roll 25" 230 lbs.