Patent ID: 9409374
Filing Date: 2016-08-09
CPC Classification: B31F

Claim Text:
1. A method for gluing a single faced corrugated cardboard in a double facer, the method comprising: immersing part of a gluing roll into glue contained in a glue bath; adjusting the glue adhering to the gluing roll to a predetermined thickness by a doctor roll; and transferring the glue to flute tips of the single faced corrugated cardboard while the single faced corrugated cardboard is passing through a nip between the gluing roll and a pressure roll, wherein the single faced corrugated cardboard is wrapped around a swing roll disposed at an upstream portion of a transferring direction of the single faced corrugated cardboard from the nip between the gluing roll and the pressure roll, a number of flute tips of the single faced corrugated cardboard that are to be concurrently in contact with the gluing roll and applied with the glue is adjusted by moving only the swing roll in such a direction that crosses a sheet face of the single faced corrugated cardboard passing through the nip, center axes of the gluing roll and the pressure roll are horizontally arranged, and the pressure roll is arranged on the same horizontal level as the gluing roll, so that a bend caused by the weight of the pressure roll is not generated on the nip between the gluing roll and pressure roll.