초록 ▼

A tray-type container is disclosed which is formed from paperboard having a coating of heat sealable and heat resistant film material and which, when fully set-up has a rectangular bottom wall with upstanding side walls which are connected at the corners by folded triangular web members and which ha

A tray-type container is disclosed which is formed from paperboard having a coating of heat sealable and heat resistant film material and which, when fully set-up has a rectangular bottom wall with upstanding side walls which are connected at the corners by folded triangular web members and which have an outwardly directed flange formation at the top edges on which the margins of a lid member of the same material may be adhesively secured with provision for tearing out the major portion of the lid member so as to uncover the contents in the tray while leaving substantial marginal portions of the lid member intact and secured in reinforcing relation on the tray flange.

대표청구항 ▼

In a tray type container for packaging a product which is formed from a relatively light weight paperboard material with peripheral side walls upstanding from a bottom wall which side walls will buckle when subject to outwardly directed force and which have an outwardly directed narrow flange format

In a tray type container for packaging a product which is formed from a relatively light weight paperboard material with peripheral side walls upstanding from a bottom wall which side walls will buckle when subject to outwardly directed force and which have an outwardly directed narrow flange formation at the top edge thereof, a top cover forming lid member which has a periphery corresponding substantially to the outer periphery of the narrow flange formation, said cover forming member having a seal forming coating at least around the marginal portions which permits adhesively securing the marginal portions on the top face of the flange formation and said cover forming member having parallel spaced tearing line formations on the outer and inner faces extending around at least a major portion of the peripheral margin, the outermost tearing line formation being spaced from the peripheral edge a predetermined distance which is somewhat less that the width of said flange formation and the innermost tearing line extending adjacent the junction of the inner edge of the flange formation with the top edge of the side wall.