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At Metsä Tissue in Katrinefors, Sweden, deinked pulp from recycled waste paper is used in the production of tissue paper. During the process, broke generated during web breaks in the paper machine or from finished paper that is discarded is normally sent to a pulper for dissolving and then mixed in with other pulp to be reused in the tissue machine.

“There can be problems with reusing broke when it comes from wet-strength material,” says Mikael Käll, who works as a development engineer at the Katrinefors mill. “Such material is difficult to dissolve properly in the pulper, which means flakes remain in the pulp. When that pulp reaches the paper machine there is an increased risk of web breaks.”

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