초록 ▼

A carton blank having an outer layer of a relatively rigid material, a first inner layer of a relatively rigid material superposed over a portion of the outer layer and a second inner layer of a relatively flexible layer of a fluid impervious material is provided with first and second weakened porti

A carton blank having an outer layer of a relatively rigid material, a first inner layer of a relatively rigid material superposed over a portion of the outer layer and a second inner layer of a relatively flexible layer of a fluid impervious material is provided with first and second weakened portions so that, after a carton has been formed from the carton blank, filled with a desired material and sealed, the first weakened portion may be broken to form a flip top lid which when moved in an arcuate path will gradually sever the second weakened portion to form an opening in the carton so that an amount of the desired material may be removed from the carton.

대표청구항 ▼

1. A carton blank comprising:an outer layer comprising a first generally rectangular sheet of a relatively rigid material and having an outer surface and an inner surface; said outer layer having a plurality of cut and fold lines formed therein for dividing said outer layer into a plurality of panel

1. A carton blank comprising:an outer layer comprising a first generally rectangular sheet of a relatively rigid material and having an outer surface and an inner surface; said outer layer having a plurality of cut and fold lines formed therein for dividing said outer layer into a plurality of panels; said outer layer having at least a first sidewall panel being integral with a second sidewall panel and a third sidewall panel and joined thereto by opposite fold lines; a first top panel integral with said first sidewall panel and joined thereto by a fold line; a second top panel integral with said second sidewall panel and joined thereto by a fold line; a third top panel integral with said third sidewall panel and joined thereto by a fold line; a first inner layer comprising a second generally rectangular sheet of a relatively rigid material having an outer surface and an inner surface; said second generally rectangular sheet being opposite to portions of said first, second and third sidewall panels; said second generally rectangular sheet having at least a first partial sidewall panel integral with a second partial sidewall panel and a third partial sidewall panel and secured thereto by opposite fold lines; said first sidewall panel and said first partial sidewall panel having substantially the same width between said opposite fold lines thereof; said second generally rectangular sheet having an upper edge portion and a lower edge portion; at least a portion of said first partial sidewall panel adjacent to said lower edge being secured to at least a portion of said first sidewall panel; said upper edge portion being located adjacent to but spaced from said fold lines between said first, second and third sidewall panels and said first, second and third top panels; a second inner layer comprising a generally rectangular sheet of a relatively flexible fluid impervious material and having an outer surface and an inner surface; at least portions of said outer surface of said second inner layer being secured to opposite portions of said inner surface of said outer layer; at least other portions of said outer surface of said second inner layer being secured to at least portions of said inner surface of said first inner layer; said second inner layer having a weakened portion located adjacent to but spaced from said upper edge of said first inner layer; portions of said outer surface of said second inner layer surrounding said weakened portion being secured to opposite portions of said inner surface of said first inner layer; and a continuous weakened portion in portions of said first, second and third sidewall panels for cooperating with said weakened portion in forming an opening in a carton formed from said outer layer and said first and second inner layers so that said weakened portions may be broken to form an opening in said carton and a flip top lid for opening or closing said opening.