A packing box includes a bottom wall, first side walls, second side walls, and split walls. The bottom wall has a quadrangular shape having first side edges and second side edges. The first side walls respectively extend from the first side edges and have first opposite side edges that are respectively opposite to the first side edges. The second side walls respectively extend from the second side edges. The split walls respectively extend from the first opposite side edges of the first side walls and respectively have distal-end edges in directions in which the split walls extend. The distal-end edges of the split walls are configured to abut on each other such that the split walls form a ceiling wall that is opposite to the bottom wall. The split walls are respectively configured to be locked with the second side walls with a locking member.

An adhesive-free packaging structure includes a substrate, at least one foldable area, and at least one first connecting structure. The substrate includes a first end portion and a second end portion, and a material of the substrate includes a natural fiber. The foldable area is disposed on the substrate and includes at least one folding line. The first connecting structure is disposed on the substrate and includes a first connecting element and a second connecting element respectively disposed on the first end portion and the second end portion. When the substrate is bent along the foldable area, the first end portion and the second end portion approach each other and the first connecting element and the second connecting element are correspondingly assembled.

A locking receiving portion is defined by a first inclined line extending toward a third panel side on a first panel from a branching point on a fold line between the first panel and a second panel, a second inclined line extending toward the third panel side on the second panel from the branching point, and a cut portion extending between a distal end of the first inclined line and a distal end of the second inclined line. The locking receiving portion extends in an inclined manner between the first panel and the second panel in an assembled state. A locking portion is formed on the third panel, and configured to be locked to a cut portion side of the locking receiving portion in an assembled state.

A locking receiving portion is defined by a first inclined line extending toward a third panel side on a first panel from a branching point on a fold line between the first panel and a second panel, a second inclined line extending toward the third panel side on the second panel from the branching point, and a cut portion extending between a distal end of the first inclined line and a distal end of the second inclined line. The locking receiving portion extends in an inclined manner between the first panel and the second panel in an assembled state. A locking portion is formed on the third panel, and configured to be locked to a cut portion side of the locking receiving portion in an assembled state.

A tiered pizza box for separately housing a first food item and a second food item, having: a lower box portion having a floor; a left wall; a right wall; a front wall; and a rear wall; an upper lid portion having a lid top; a left flap; a right flap; and a front flap; corner tabs; a plurality of corner slot sets; the tiered pizza box being configured to be folded into an assembled state, forming a lower interior space; and corner brackets configured to be inserted into the plurality of corner slot sets to form a support structure; a tier insert configured to rest on the support structure, forming an upper interior space; such that the first food item can be housed within the lower interior space, and the second food item can be housed within the upper interior space.

The present invention is directed to a foldable transport container suitable to receive and hold multiple plates with samples in it. The container is comfortable to load, transport and unload. The invention also relates to a strip of material for providing such a foldable transport container. Finally the invention relates to a method for assembling such a foldable container.

Containment systems, containers, and methods can be comprised of first through fourth sidewalls; a bottom wall connected to the first through fourth sidewalls; and first through fourth lid flaps connected to respective first through fourth sidewalls via respective first through fourth hinges. A single sheet of paperboard can make up the sidewalls, the bottom wall, and the lid flaps. In a fully open configuration, the third lid flap can be folded at the third hinge such that a flap body thereof is adjacent to the third sidewall, the fourth lid flap can be folded at the fourth hinge such that a flap body thereof is adjacent to the fourth sidewall, and a flap wing of each of the third lid flap and the fourth lid flap can be under the bottom wall such that each of the flap wings is against the bottom wall and maintained under the bottom wall.

A lid 20 is a paper lid capable of adhering to a flange portion of a container body and includes: a tab 25; back half-cut lines 35a, 36a extending from the tab 25 outward and away from each other at an acute angle with respect to a paper grain direction K; back half-cut lines 37a, 38a extending from the outer ends of the back half-cut lines 35a, 36a, respectively, along the paper grain direction K; front half-cut lines 35b, 36b located on the outer side of the back half-cut lines 35a, 36a with a width W between the front and back half-cut lines and extending along the back half-cut lines 35a, 36a at an acute angle with respect to the paper grain direction K; and front half-cut lines 37b, 38b located on the outer side of the back half-cut lines 37a, 38a with the width W between the front and back half-cut lines and extending along the back half-cut lines 37a, 38a and the paper grain direction K.

A lid 20 is a paper lid capable of adhering to a flange portion of a container body and includes: a tab 25; back half-cut lines 35a, 36a extending from the tab 25 outward and away from each other at an acute angle with respect to a paper grain direction K; back half-cut lines 37a, 38a extending from the outer ends of the back half-cut lines 35a, 36a, respectively, along the paper grain direction K; front half-cut lines 35b, 36b located on the outer side of the back half-cut lines 35a, 36a with a width W between the front and back half-cut lines and extending along the back half-cut lines 35a, 36a at an acute angle with respect to the paper grain direction K; and front half-cut lines 37b, 38b located on the outer side of the back half-cut lines 37a, 38a with the width W between the front and back half-cut lines and extending along the back half-cut lines 37a, 38a and the paper grain direction K.

A blank for forming a carton includes a unitary substrate layer defining a primary axis and a secondary axis transverse to the primary axis. The substrate layer includes: a main panel having a side edge extending substantially parallel to the primary axis and an end edge substantially parallel to the secondary axis; an end outer panel connected to the end edge by a first fold line extending substantially parallel to the secondary axis; an end inner panel connected to the end outer panel by a second fold line extending substantially parallel to the secondary axis; a side outer panel connected to the side edge by a third fold line extending substantially parallel to the primary axis; a side inner panel connected to the side outer panel by a fourth fold line extending substantially parallel to the primary axis; a notch defined in a side edge of the end inner panel; and an integral tab extending from an end edge of the side inner panel adjacent the side edge of the end inner panel. The blank is configured to be erected into a carton by: folding the end outer panel relative to the main panel about the first fold line; folding the end inner panel relative to the end outer panel about the second fold line so that the end inner panel substantially faces the end outer panel and is deflectably spaced away from the end outer panel; folding the side outer panel relative to the main panel about the third fold line so that the side inner panel substantially faces the side outer panel, whereby a pocket is defined between the notch, the side outer panel, and the end outer panel; folding the side inner panel relative to the side outer panel about the fourth fold line so that the side inner panel substantially faces the side outer panel; and inserting the tab into the pocket to interlock the side inner panel and the end inner panel.