softwood fibre

Softwood fiber refers to the fibers obtained from coniferous trees, such as pine and fir. These fibers are typically longer, measuring about 2 to 4 millimeters, which contributes to the strength of paper. In contrast, hardwood fibers, from deciduous trees, are shorter, ranging from 0.5 to 1.5 millimeters, and help fill in paper sheets, providing opacity and a smooth surface.12

Wood is the predominant source of papermaking fiber, with tree trunks (boles) being the main component used. The process of papermaking involves pulping wood into fibers, which are then formed into sheets. While wood is the primary source, other plant materials can also be used to produce paper, though economic considerations and desired paper quality limit these sources.23