CORRUGATED BOARD AND LINER MATERIAL UTILIZING THE SAME

摘要

A corrugated board takes double layer structure in corrugated medium for duplicate the strength. Each corrugated medium component (12a, 14a) is preliminarily bonded on linerboard (12b, 14b) at one side and mate with the other corrugated medium. A thermoplastic film or layer (16, 20) is interposed between opposing corrugated medium for bonding the corrugated mediums during thermal press process. In utilizing the corrugated board of the present invention, it is possible to form a liner material which is at least partially reinforced. Partial reinforcement may be advantagously introduced for achieving both of light weight and satisfactory strength.