THE OUTLOOK FOR TIMBER DEMANDS 



55 



FIBROUS MATERIALS CONSUMED IN MANUFACTURE 

 OF PAPER AND BOARD 



1.25 



125 



.All Fibrous Material 



Figure 24 



production of paper and board and assumed trends 

 in use of fibrous materials, rise from 28.6 million 

 tons in 1962 to 37.0 million tons in 1970 ^f- and to 

 88.8 million tons in 2000 (table 39). Projected 

 demands for waste paper total 18.4 million tons in 

 2000, and other fibrous materials 2.2 million tons. 



In addition to pulps used for paper and board, 

 approximately 1.1 million tons of dissolving pulps 

 were consumed in the United States in 1962, 

 mainly for such products as rayon, cellophane, 

 nitrocellulose, films, and plastics. Projections 

 based on relationships between consumption of 

 dissolving pulp and gross national product in the 

 period 1947-61 indicate a potential rise in demand 

 to about 2 million tons by 2000 (table 40). 



Projected demands for all grades of wood pulp 

 thus amount to about 90.8 million tons by 2000— 

 slightly more than three times consumption in 

 1962 (table 41). 



2« Estimates of the U.S. Department of Commerce for 

 1970 range from 39.4 to 44.1 million tons. 



Largest Increase in Demand Expected 

 for Sulfate and Semichemical Pulps 



Consumption trends for the five major types of 

 wood pulp used in the manufacture of paper and 

 board, including sulfite, sulfate, groundwood, semi- 

 chemical, and defibrated or exploded pulps, have 

 shown striking differences (table 40 and fig. 25). 

 Between 1950 and 1962, for example, use of sulfate 

 pulp in U.S. mills rose from 8.4 million to 17.3 

 million tons and semichemical pulps from 0.7 mil- 

 lion to 2.5 million tons. Groundwood and de- 

 fibrated or exploded pulps showed modest in- 

 creases, while consumption of sulfite and soda 

 pulps declined slightly. 



Further substantial increases in use of sulfate 

 and semichemical pulps have been assumed, with 

 lesser increases for other grades of pulp (table 40 

 and fig. 25). These estimates were derived from 

 the projected demands for individual grades of 

 paper and board and estimates of the mix of wood 



