Carton blank and carton formed therefrom
First Claim
Patent Images
1. A carton blank comprising:
- a unitary sheet of a relatively rigid material;
said unitary sheet of a relatively rigid material having a plurality of cut and fold lines for dividing said unitary sheet of a relatively rigid material into conventional panel portions having at least a central body portion having at least three panel portions joined by two fold lines;
a generally rectangular sheet of a relatively flexible fluid impervious material having at least a central body portion;
at least portions of said at least a central body portion of said rectangular sheet being secured to said at least a central body portion of said unitary sheet;
continuous linearly extending weakened portions formed in said at least three panel portions of said unitary sheet;
at least a portion of said generally rectangular sheet being weakened along a line opposite to said continuous linearly extending weakened portions;
a continuous coating of adhesive securing together the portions of said at least a central body portion of said unitary sheet and said at least a central body portion of said generally rectangular sheet along and adjacent to said weakened portions; and
said continuous coating of adhesive cooperating with said at least a portion of said generally rectangular sheet to preserve the integrity of said generally rectangular sheet but to permit the simultaneously separation thereof with said unitary sheet.
12 Assignments
0 Petitions
Accused Products
Abstract
A carton formed from a carton blank so that the carton has an outer layer formed from a relatively rigid material and an inner layer formed from a relatively flexible fluid impervious material. The outer layer and the inner layer have superposed weakened portions secured together so that the carton may be opened along the superposed weakened portions in one simultaneous operation. Also, in another embodiment, a similar carton is provided with a pour spout.
-
Citations
19 Claims
-
1. A carton blank comprising:
-
a unitary sheet of a relatively rigid material; said unitary sheet of a relatively rigid material having a plurality of cut and fold lines for dividing said unitary sheet of a relatively rigid material into conventional panel portions having at least a central body portion having at least three panel portions joined by two fold lines; a generally rectangular sheet of a relatively flexible fluid impervious material having at least a central body portion; at least portions of said at least a central body portion of said rectangular sheet being secured to said at least a central body portion of said unitary sheet; continuous linearly extending weakened portions formed in said at least three panel portions of said unitary sheet; at least a portion of said generally rectangular sheet being weakened along a line opposite to said continuous linearly extending weakened portions; a continuous coating of adhesive securing together the portions of said at least a central body portion of said unitary sheet and said at least a central body portion of said generally rectangular sheet along and adjacent to said weakened portions; and said continuous coating of adhesive cooperating with said at least a portion of said generally rectangular sheet to preserve the integrity of said generally rectangular sheet but to permit the simultaneously separation thereof with said unitary sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A carton formed from a carton blank comprising:
- a unitary sheet of a relatively rigid material;
said unitary sheet of a relatively rigid material having a plurality of cut and fold lines for dividing said unitary sheet of a relatively rigid material into conventional panel portions having at least a central body portion having at least three panel portions joined by two fold lines;
a generally rectangular sheet of a relatively flexible fluid impervious material having at least a central body portion;
at least portions of said at least a central body portion of said rectangular sheet being secured to said at least a central body portion of said unitary sheet;
continuous linearly extending weakened portions formed in said at least three panel portions of said unitary sheet;
at least a portion of said generally rectangular sheet being weakened along a line opposite to said continuous linearly extending weakened portions;
a continuous coating of adhesive securing together the portions of said at least a central body portion of said unitary sheet and said at least a central body portion of said generally rectangular sheet along and adjacent to said weakened portions; and
said continuous coating of adhesive cooperating with said at least a portion of said generally rectangular sheet to preserve the integrity of said general rectangular sheet but to permit the simultaneously separation thereof with said unitary sheet comprising;an outer layer formed from said unitary sheet of a relatively rigid material; an inner layer formed from said generally rectangular sheet of a relatively flexible fluid impervious material; said inner layer having a central body portion with at least portions of said central body portion secured to opposite portions of said outer layer; and at least a portion of said secured together portions having said weakened portions in a superposed relationship so that one opening can be formed simultaneously in said outer and inner layers by the application of a force to said outer layer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
- a unitary sheet of a relatively rigid material;
Specification