The storage time of pulpwood had no significant effect on particle size distribution in any chip size classes. The study confirms the knowledge that chipping time consumption is inversely proportional to engine power and grapple load size in feeding. The use of an narrower 80 mm 80 mm sieve on Scots pine material does not seem to offer any benefit compared to a 100 mm 100 mm sieve from the perspective of chip quality.
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Laitila et al. (2015) studied this question.