Patent ID: 9682811
Date: 2017-06-20
CPC Classifications: B65D,D21J

Claim:
1. A method of manufacturing an egg package by suction moulding of a fibrous material, the package comprising: a bottom part comprising a plurality of egg receiving compartments having non-planar side surfaces so as to match at least partially the outer contours of an egg, the plurality of egg receiving compartments being formed in at least two parallel rows, a cover part comprising a top surface, a front surface, a back surface, and two end surfaces, the cover part being permanently connected to the bottom part by a hinge between the back surface of the cover part and the bottom part so as to allow the cover part to move between an open position and a closed position, the bottom part comprising a back side, a front side, two end sides, and an upwardly extending retainment projection extending from the front side of the bottom part, the upwardly extending retainment projection having a downwardly and outwardly extending nose for locking engagement with the bottom of a cooperating aperture in the front surface of the cover part, the nose not extending beyond the front surface of the cover part when the cover part is in its closed position, the method comprising the steps of: placing said retainment projection and cooperating aperture relative to each other during moulding of the egg package in a moulding form, such that the front of the cover part is located inwardly from the retainment projection such that when removed from the moulding form, the retainment projection and the cooperating aperture are spaced apart with an offset from each other such that they cannot be lockingly engaged, removing the egg package from the moulding form, and drying said egg package in an oven such that the front of the cover part deforms by moving outwards toward the front of the bottom part to a position at which, upon closing of the cover part onto the bottom part, the aperture and retainment projection are positioned to lockingly engage each other.