Patent ID: 8628002

Claim:
A packing box that covers a top face of a product mounted on a pallet comprising, a rectangular bottom plate, four side plates erected from the periphery of the bottom plate and surrounding the bottom plate, and four frame columns formed by tucking parts extending from both ends of two side plates opposing each other out of the four side plates, the extended parts being narrower in width than the two side plates, the four frame columns extending midway to distal ends of the four side plates at four corners formed by the four side plates, the four frame columns being joined to the four side plates, the distal ends of the four side plates protruding from the four frame columns, the bottom plate, the four side plates and the four frame columns being formed by one corrugated fiberboard sheet, wherein each of the four side plates has a first through hole formed at a position facing one of the frame columns in each of both end portions of the side plates, each of the frame columns has a second through hole formed at a position facing the first through hole in a respective one of the side plates, and each of the frame columns is joined to each of two respective side plates forming the corners by a joining member inserted through the first through hole of each of the two respective side plates and the second through hole.