The Franklin County board of commissioners on Monday approved a matching incentives grant for the Palziv foam products company, which is planning a $6.35 million expansion to its plant and North American headquarters in Louisburg. Palziv is expected to also create 50 new jobs in Louisburg, about 30 miles north of Raleigh, to support the investment in machinery, equipment and building expansion, says Ronnie Goswick, director of Franklin County's economic development commission. Franklin County has…