| 摘要 |
<p>The invention provides a packing box, formed of a color printing polypropylene film, which is extended in two directions and a corrugated paperboard. The box includes boards comprising an outer layer, an inner layer and a reinforcing layer, wherein said outer layer and inner layer are respectively formed of a polypropylene film which is extended in two directions and a paperboard bonded to the film by a resin layer, and said reinforcing layer is between the outer layer and the inner layer, and formed of at least one layer of corrugated paperboard. It is characterized that, the outer surface and/or inner surface of the polypropylene film have a color printing pattern layer. Thus, the box has cubic effect and obvious layered sense, and is fine. The invention also provides a method to produce the packing box with high productivity.</p> |
