Wastepaper(redirected from wastepapers)
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paper and cardboard products that have been used; also the paper waste products of printing shops, mills producing office paper supplies, and the like. Wastepaper is used at paper mills as a secondary raw material.
After preliminary cleaning, the wastepaper supplied to paper and cardboard mills is made into fibrous pulp (slurry). The pulp is then cleaned, concentrated, and sent to a cardboard or paper machine.
The recycling of wastepaper is very important for the economy: wood is saved and the cost of the finished product is lowered. Wastepaper is 1.5-2.5 times less expensive than conventional wood pulp. One ton of utilized wastepaper saves approximately 4 cu m of wood. The wastepaper reclaimed in some countries (such as the Netherlands, Japan, and the Federal Republic of Germany) accounts for 50 percent of the total quantity of required paper production.
A. V. VASENKO