Pulpwood usually comes from thinning and is used to make pulp, then paper and cardboard products.
At thinning, some trees are removed from the woods, so that the remaining trees will have better conditions for growing. Pulpwood is usually thinner logs that are not sufficiently large to be saw timber. But there are also a lot of pulpwood at final felling, as trees narrow towards the top, the peaks are too weak to become timber and instead become pulpwood.
Pulpwood is divided into spruce pulpwood, conifer pulpwood and mixed deciduous pulpwood. Conifer pulpwood contains a mixture of different coniferous trees, such as spruce, pines and contorta, but larch and some fir can also be included. In conifer pulpwood, a higher level of forest root is accepted in comparison with pulpwood from spruce. Deciduous pulpwood can be mixed but the most common tree species are birch.
In the production of pulp, recycled paper is mixed with the fresh pulp, depending on what the pulp is to be used for. In Sweden, each household generates approximately 50 kg of recycled paper in one year. An amazing feature of paper fiber is that it can be recycled 5 to 7 times on average before it is exhausted and instead used as biofuel.
For a sustainable social development it is important that packaging materials have good climate and environmental performance. Packaging of paper and cardboard has less climate impact than packaging materials based on non-renewable resources such as plastic. Since food production and distribution in itself has a high climate impact, it is important that packaging materials for food are functional and facilitate transport to reduce food welfare and direct climate impact.
Text and photo from Swedish Forest Industries Federation.
Paper pulp can be recycled many times. This image shows so-called virgin fiber, which is only made of new wood raw material.
Pine and spruce from Sweden are perfect for making long-fiber pulp. Used for, for example, monolithic paper, which is good for packaging with high purity requirements.