Patent ID: 8307870

Claim:
A heat plate unit for fabricating a double-faced corrugated fiberboard included in a double facer that fabricates a double-faced corrugated fiberboards by gluing a single-faced corrugated fiberboard in a swath form and a linerboard together, the heat plate, being horizontally disposed and having a top surface on which the single-faced corrugated fiberboard in a swath form and the linerboard overlapping and being glued together travels, comprising: a rib, disposed on a bottom surface of a heat plate, extending in a width direction of the heat plate, being coupled to the heat plate to form an integrated body, and being capable of thermal expansion; and temperature controlling means that controls a temperature of the heat plate and a temperature of the rib independently of each other, wherein the temperature controlling means is connected to a database that stores material condition and production condition of the double-faced corrugated fiberboard and optimum target temperatures of the heat plate and the rib that inhibit warp of the double-faced corrugated fiberboard in association with each other, and the temperature controlling means comprises target temperature setting means that, upon input of the material condition and the production condition, sets the target temperatures with reference to the association stored in the database, and temperature adjusting means that adjusts the temperatures of the heat plate and the rib on the basis of the target temperatures set by the target temperature setting means.