A tearable leak-resistant container is provided with creases, partial perforation along selected creases, adhesion of flaps, and a collapsed position to permit rapid reconfiguration to an expanded position. The expanded position of the container enables enhanced filling with food ingredients and transportation without spillage. The adhered flaps provide enhanced leak resistance, and the perforated creases permit disassembly of the container to improve access to the food contained within.

A locking device for a box includes a first panel defining a locking tab separable from the first panel and comprising a first tab subpanel and a second tab subpanel; the first tab subpanel extending from the first panel and the second tab subpanel extending from the first tab subpanel, the second tab subpanel including a neck and an ear, the ear extending from the neck in a lateral direction of the locking tab; and a second panel defining a locking opening, the locking opening sized to receive and capture the locking tab, the locking tab configured to engage an edge of the locking opening and thereby configured to prevent movement of the locking tab with respect to the locking opening in an opening direction of the locking device.

A locking device for a box includes a first panel defining a locking tab separable from the first panel and comprising a first tab subpanel and a second tab subpanel; the first tab subpanel extending from the first panel and the second tab subpanel extending from the first tab subpanel, the second tab subpanel including a neck and an ear, the ear extending from the neck in a lateral direction of the locking tab; and a second panel defining a locking opening, the locking opening sized to receive and capture the locking tab, the locking tab configured to engage an edge of the locking opening and thereby configured to prevent movement of the locking tab with respect to the locking opening in an opening direction of the locking device.

A method for producing reusable packaging from a carton. A rectangular blank has sides X and Y, a total area xy, 2(a+h)≤x≤3(a+h)+a, and y−2(h+r)≤b≤y, where a and b are side dimensions, h is height, and r is width, or width reduced by height h, of the periphery region R of the finished packaging. The method includes: producing folding lines B in the blank parallel to a first side Y at these distances from the latter: B.sub.1: a.sub.1=h; B.sub.2: a.sub.2=h+a; B.sub.3: a.sub.3=2h+a; severing of two severing lines T, each starting from opposite sides X, along one of the folding lines B, or the extension thereof; selecting the distance between two end points E.sub.T of the severing lines T which are closer to an axis of symmetry S.sub.1, which is parallel to the side X, such that the distance corresponds to a side B″ of the finished packaging or length of a side M of a packaging insert.

A method for producing reusable packaging from a carton. A rectangular blank has sides X and Y, a total area xy, 2(a+h)≤x≤3(a+h)+a, and y−2(h+r)≤b≤y, where a and b are side dimensions, h is height, and r is width, or width reduced by height h, of the periphery region R of the finished packaging. The method includes: producing folding lines B in the blank parallel to a first side Y at these distances from the latter: B.sub.1: a.sub.1=h; B.sub.2: a.sub.2=h+a; B.sub.3: a.sub.3=2h+a; severing of two severing lines T, each starting from opposite sides X, along one of the folding lines B, or the extension thereof; selecting the distance between two end points E.sub.T of the severing lines T which are closer to an axis of symmetry S.sub.1, which is parallel to the side X, such that the distance corresponds to a side B″ of the finished packaging or length of a side M of a packaging insert.

The present disclosure discloses a paper preservation box comprises a box body formed by trimming and folding a whole paperboard and a thin film layer laminated on the inner surface of the box body through suction or blowing plastic process; the paperboard includes a bottom wall that is square as a whole and serves as the bottom of the box body, left and right side walls connected to the edges of the left and right sides of the bottom wall, and front and rear side walls connected to the edges of the front and rear sides of the bottom wall; joints between the left and right side walls and the front and rear side walls. The technical scheme disclosed make it simpler for manufacturing and better in sealing effect and strength and effectively promotes and prolongs shelf life.

The present disclosure discloses a paper preservation box comprises a box body formed by trimming and folding a whole paperboard and a thin film layer laminated on the inner surface of the box body through suction or blowing plastic process; the paperboard includes a bottom wall that is square as a whole and serves as the bottom of the box body, left and right side walls connected to the edges of the left and right sides of the bottom wall, and front and rear side walls connected to the edges of the front and rear sides of the bottom wall; joints between the left and right side walls and the front and rear side walls. The technical scheme disclosed make it simpler for manufacturing and better in sealing effect and strength and effectively promotes and prolongs shelf life.

A blank for a container for a food product, the blank comprising a substantially rectangular base having four edges, and four side walls extending from each edge of said base; and a lid which is joined to one said side wall by a hinged fold to dose the container in use; wherein each side wall has a top edge and a bottom edge which is joined to the base by a hinged fold; and wherein at least one said side wall is trapezoidal.

A blank for a container for a food product, the blank comprising a substantially rectangular base having four edges, and four side walls extending from each edge of said base; and a lid which is joined to one said side wall by a hinged fold to dose the container in use; wherein each side wall has a top edge and a bottom edge which is joined to the base by a hinged fold; and wherein at least one said side wall is trapezoidal.

A carton for holding a plurality of articles. The carton comprises a plurality of panels that extends at least partially around an interior of the carton and a plurality of end flaps respectively foldably connected to respective panels of the plurality of panels. The plurality of end flaps are at least partially overlapped with respect to one another to thereby at least partially form a closed end of the carton. The carton also can comprise at least one article protection flap foldably connected to at least one end flap of the plurality of end flaps for engaging at least one article of the plurality of articles. The at least one article protection flap extends from the closed end at least partially into the interior of the carton.