Finnish pulp and paper maker UPM-Kymmene posted a bigger-than-expected rise in quarterly core profit on the back of cost cuts, and said it was planning more savings to boost profitability amid a weak European economy. The world's biggest producer of graphic papers, such as magazine paper and newsprint, said on Tuesday its total third-quarter core operating profit rose to 235 million euros , or 9.7 percent of sales, from 194 million, or 7.8 percent of sales, in the same period last year.