Liquid-tight boat-shaped packaging tray and its manufacturing method
First Claim
1. A fluid-tight, boat-shaped packaging tray, comprising:
- a bottom comprising an internal face, surrounded by sides, each side comprising an internal face, connected in pairs by bellows;
each of said bellows comprising first and second portions, said second portion having a predetermined surface area which is bordered by one of said sides and by said first portion of the bellows;
said first portion of said bellows comprising an upper, cut-out portion defined by an upper edge extending from said second portion of said bellows to a respective adjacent one of said sides;
said bellows being folded inwardly and rigidly locked against a corresponding internal face of a corresponding side by an adhesive located at and above said upper edge of said first portion of said bellows, such that said bellows is capable of preventing or stopping liquid contained in said packaging tray from rising by capillary action; and
said upper edge of said first portion of said bellows extending to said adjacent one of said sides at a position for enabling a majority of said predetermined surface area of said second portion of said bellows to come into direct contact with the internal face of a corresponding side.
0 Assignments
0 Petitions
Accused Products
Abstract
Fluid-tight, boat-shaped packaging tray comprises a bottom surrounded by sides, connected in pairs by means of inwardly backfolded bellows. These bellows comprise two portions which contact one of the sides. The first portion of the bellows, adjacent to the side contacting the bellows, has an upper cut-out portion which provides for direct contact between the second portion of the bellows and the side of the packaging tray which contacts the bellows during fabrication. The fabrication provides a method whereby simple gluing of the internal faces of the sides intended to contact the bellows allows the front face of one of the portions to be assembled with the back face of the other portion in order to facilitate erection and assembly of container and to maintain the fluid-tight nature of the corner. This assembly method requires the application of adhesive to only one side of the cardboard blank from which the packaging tray is formed, and the resultant structure prevents liquid from rising by capillary action and provides an attractive external appearance of the packaging tray.
-
Citations
51 Claims
-
1. A fluid-tight, boat-shaped packaging tray, comprising:
-
a bottom comprising an internal face, surrounded by sides, each side comprising an internal face, connected in pairs by bellows; each of said bellows comprising first and second portions, said second portion having a predetermined surface area which is bordered by one of said sides and by said first portion of the bellows; said first portion of said bellows comprising an upper, cut-out portion defined by an upper edge extending from said second portion of said bellows to a respective adjacent one of said sides; said bellows being folded inwardly and rigidly locked against a corresponding internal face of a corresponding side by an adhesive located at and above said upper edge of said first portion of said bellows, such that said bellows is capable of preventing or stopping liquid contained in said packaging tray from rising by capillary action; and said upper edge of said first portion of said bellows extending to said adjacent one of said sides at a position for enabling a majority of said predetermined surface area of said second portion of said bellows to come into direct contact with the internal face of a corresponding side. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A cardboard blank for producing a fluid-tight packaging tray, said blank comprising:
-
a bottom comprising an internal face, surrounded by sides, each side comprising an internal face, connected in pairs by bellows; each of said bellows being foldable to contact a corresponding internal face of a respective one of said sides at a bellows-receiving area and comprising first and second portions, said second portion having a predetermined surface area which is bordered by one of said sides and by said first portion of the bellows; said first portion of said bellows having an upper, cut-out portion defined by an upper edge extending from said second portion of said bellows to a respective adjacent one of said sides; said upper edge of said first portion of said bellows extending to said adjacent one of said sides at a position for enabling a majority of said predetermined surface area of said second portion of said bellows to come into direct contact with the internal face of a corresponding side, upon erection and assembly of said blank to form said packaging tray; and an adhesive on the internal face of only one side of each of said pairs of sides of said blank at said bellows-receiving area and located at least at a location corresponding to said upper edge of said first portion of said bellows and above said location. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A process for manufacturing a fluid-tight packaging tray from a cardboard blank, said cardboard blank comprising a bottom comprising an internal face, surrounded by sides, the sides comprising internal faces, connected in pairs by bellows, the bellows comprising first and second portions, said second portion having a predetermined surface area which is bordered by one of said sides and by said first portion of the bellows, said first portion of said bellows comprising a cut-out portion defined by an upper edge extending from said second portion of said bellows to a respective adjacent one of said sides, each of said bellows being foldable to contact a corresponding internal face of a predetermined one of said sides at a bellows-receiving area;
the process comprising; a) applying an adhesive to said bellows-receiving area at least corresponding to and above said upper edge of said first portion of said bellows; b) erecting the sides of the packaging tray; and c) inwardly folding said first and second portions of said bellows so as to contact said bellows-receiving area, to affix said first portion of said bellows and a majority of said predetermined surface area of said second portion of said bellows through said cut-out portion to said bellows receiving area. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
-
43. A packaging tray comprising:
-
a bottom comprising an internal face, surrounded by sides, each side comprising an internal face, connected in pairs by bellows, each of said sides having a predetermined height, each of said bellows comprising first and second portions demarcated by a median fold line extending from a corner of said bottom; said second portion having a predetermined surface area which is bordered by one of said sides and by said first portion of the bellows; said first portion of said bellows having an upper, cut-out portion defined by an upper edge extending at an angle from an edge of said second portion of said bellows to a respective adjacent one of said sides at a position at substantially one-half of the predetermined height of said one of said sides, said second portion of said bellows thereby extending beyond said upper edge of said first portion of said bellows; said bellows being folded inwardly along said median fold line and being rigidly locked against a corresponding internal face of a corresponding side by an adhesive located at and above said upper edge of said first portion of said bellows, such that said bellows is capable of preventing or stopping liquid contained in said packaging tray from rising by capillary action to said upper edge of said first portion of said bellows; and said cut-out portion of said first portion of said bellows allowing at least part of said second portion of said bellows to come into direct contact with the internal face of a corresponding side. - View Dependent Claims (44, 45, 46, 47)
-
-
48. A fluid-tight, boat-shaped packaging tray, comprising:
-
a bottom comprising an internal face, surrounded by first and second sides, the first side being shorter than the second side, each side comprising an internal face, connected in pairs by bellows; each of said bellows comprising first and second portions, said second portion having a predetermined surface area which is bordered bv one of said sides and by said first portion of the bellows; said first portion of said bellows comprising an upper, cut-out portion defined by an upper edge extending from said second portion of said bellows to said first side; said bellows being folded inwardly and rigidly locked against an internal face of said first side by an adhesive located at and above said upper edge of said first portion of said bellows, such that said bellows is capable of preventing or stopping liquid contained in said packaging tray from rising by capillary action; said upper edge of said first portion of said bellows extending to said first side at a position for enabling a majority of said predetermined surface area of said second portion of said bellows to come into direct contact with the internal face of said first side; and said first and said second portions of said bellows being separated by a median fold line along which said bellows are folded, said fold line forming, with an adjacent one of said sides, an interior angle, said interior angles of both of said first portion and said second portion of each of said bellows equalling a sum of less than 90°
, and each of said first and second sides being flared to form an angle between said bottom and said respective portions which is greater than 90°
. - View Dependent Claims (49)
-
-
50. A process for manufacturing a fluid-tight packaging tray from a cardboard blank, said cardboard blank comprising a bottom comprising an internal face, surrounded by first and second sides, the first side being shorter than the second side, each side comprising an internal face, connected in pairs by bellows, said second portion having a predetermined surface area which is bordered by one of said sides and by said first portion of the bellows, said first portion of said bellows comprising an upper, cut-out portion defined by an upper edge extending from said second portion of said bellows to said first side, said first and said second portions of said bellows being separated by a median fold line along which said bellows are folded, said fold line forming, with an adjacent one of said sides, an interior angle, said interior angles of both of said first portion and said second portion of each of said bellows equalling a sum of less than 90°
- , said first and second sides being flared to form angles between said bottom and said respective portions which are greater than 90°
, each of said bellows being foldable to contact the first and second portions of said bellows with the internal face of said first side at a bellows-receiving area, the process comprising;a) applying an adhesive to said bellows-receiving area at least corresponding to and above said upper edge of said first portion of said bellows; b) erecting the sides of the packaging tray; and c) inwardly folding said first and second portions of said bellows so as to contact said bellows-receiving area, to affix said first portion of said bellows and a majority of said predetermined surface area of said second portion of said bellows through said cut-out portion to said bellows receiving area. - View Dependent Claims (51)
- , said first and second sides being flared to form angles between said bottom and said respective portions which are greater than 90°
Specification