FREE BOOKS

Author's List




PREV.   NEXT  
|<   8   9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31   32  
33   34   35   >>  
ago sulphite manufacturers would not accept consignments of spruce logs if they contained over 5 per cent of fir, while to-day many manufacturers tolerate 50 per cent. Rope papers are found to contain not only jute, but when this raw material is not plentiful, chemical pulp of various kinds. "Linen paper" is often no more than a trade term. Not long ago printing papers were made entirely from chemical wood pulp, but to-day if it is desired to secure paper which is free from ground wood the specifications must so stipulate. Writing papers, formerly made entirely from rags, now are likely to contain either chemical or even ground-wood pulp unless the specifications prohibit it. Without doubt, many paper manufacturers have maintained certain papers up to a fixed standard for a long series of years, but it is equally true that competition has lowered the standard of a great many papers, some of which had acquired a distinctive recognition. The employment of plant fibers will not necessarily lower the present quality of papers, but if their employment does result in products whose qualities are somewhat different from our so-called standard papers it does not necessarily follow that such papers will not find a ready market. =FACTORS JUSTIFYING AN INVESTIGATION OF HEMP HURDS.= Hemp hurds form a crop waste, in that they necessarily are produced in the raising and preparation of hemp fiber, and their present use and value are comparatively insignificant. The assembling of the hurds may be effected with economy, since the area in which hemp is handled with the use of machine brakes is restricted. Although it must be stated that the present annual supply would not be sufficient to justify the installation of a pulp mill nor would its transportation to existing mills appear feasible, it is expected that the available annual tonnage, especially in certain general sections, will increase, due to the increased use of the machine brake. The present tonnage per annum is approximately as follows: In the region of Ohio and Indiana, 2,500 tons; in the Wisconsin section, 1,000 tons; in the California region, 1,400 tons. In years of adverse weather conditions there are often large areas of hemp which are not harvested on account of its poor quality; there are also large areas of cut hemp which become overretted, due to inclement weather. It has been suggested by some of the hemp raisers that this large amount of material might be
PREV.   NEXT  
|<   8   9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31   32  
33   34   35   >>  



Top keywords:

papers

 

present

 
chemical
 

standard

 

necessarily

 

manufacturers

 

ground

 

specifications

 

employment

 

tonnage


annual
 
region
 
machine
 

weather

 

quality

 

material

 
transportation
 

existing

 

sections

 

installation


general
 

justify

 

expected

 

feasible

 

stated

 

tolerate

 

effected

 

economy

 

assembling

 

comparatively


insignificant
 

increase

 

supply

 

Although

 

restricted

 

handled

 

brakes

 

sufficient

 

account

 

harvested


conditions
 

accept

 

sulphite

 

overretted

 

raisers

 
amount
 

suggested

 

inclement

 

consignments

 

adverse