A METHOD FOR PROTECTING THE UNTRIMMED EDGE OF A PAPERBOARD OR PAPER

摘要

The invention relates to a method for protecting the untrimmed edge of pa perboard or paper (1), in which method the untrimmed edge (4) of two adjacen t paperboards or papers are protected and attached abuttingly together by se aling a separate profile (3) on both sides of the abutment of the edges (4) by means of ultrasound.