CN111372863A

CN111372863A - Finger pull tab

Info

Publication number: CN111372863A
Application number: CN201780096877.7A
Authority: CN
Inventors: 耿小洁; 戚明
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 2017-11-16
Filing date: 2017-11-16
Publication date: 2020-07-03
Also published as: BR112020009485A2; MX2020004733A; CA3079269A1; US20190144155A1; WO2019095185A1; AU2017439508A1; EP3710371A1

Abstract

A carton (1) having a flip-top (5) finger tab (3) is easy to open by a user and is capable of withstanding shipping and handling tremors.

Description

Finger pull tab

Technical Field

The present invention relates to a carton comprising a finger tab for an openable flip top.

Background

Rectangular cartons containing tubes of toothpaste, for example, are commonplace. The user typically opens the carton to access the contents of the carton from either end (i.e., the side of minimum size). The user reports frustration when opening the side panels and is further frustrated by sometimes having to shake the carton to keep the contents out of contact with the interior of the carton (given the relatively small opening provided by the side panels). A user needs to more easily access the tubes of toothpaste contained in the carton. In addition, manufacturers need to present users with a quality packaging and opening experience to provide quality products and experiences.

One way to address this need is to use flaps located on one or more sides (i.e., along the length) of the carton. In one example, the flip cover extends over the top and front sides of the carton. The purpose of the finger tab is to actuate the opening of the flip cover. However, the finger tab must be relatively easy to open by the user, yet have sufficient structural integrity to not open prematurely (e.g., during manufacture, shipping, or handling). If the finger tab opens prematurely, a potential user may negatively perceive the entire product as being of poor quality or open to allow contaminants to enter the carton. However, if the finger tab is difficult to open, the user may be frustrated with the packaging experience and may negatively view the entire product as being of poor quality.

Disclosure of Invention

The present invention is based, at least in part, on the following surprising findings: a finger tab including a first intersection point (wherein the first intersection point is formed by the intersection of the first 1/2 cut line of weakness with the first perforation and has a length of at least 1mm) provides a finger tab that is easy to open by a user but does not open prematurely (under typical shipping and handling conditions). Accordingly, one aspect of the present invention provides a carton comprising a finger tab for actuating opening of a flip top lid, wherein the finger tab comprises a first intersection point, wherein the first intersection point is formed by the intersection of a first 1/2 cut line of weakness with a first perforation. Another aspect provides a method of opening a carton, the method comprising the steps of: the finger tabs are pressed inwardly with the fingers to grasp the flaps of the carton, which are then opened to expose the interior of the carton. Another aspect provides for the use of a finger tab for opening a flip top flap of a carton, wherein the flip top flap is openable from a front side and an adjoining top side, which is easy to open by a user but does not open prematurely (under typical shipping and handling conditions).

These and other features, aspects, and advantages of particular embodiments will become apparent to those skilled in the art from a reading of the present disclosure.

Drawings

The embodiments set forth in the drawings are illustrative and not intended to be limiting of the invention defined by the claims. The following detailed description of exemplary embodiments can be understood when read in conjunction with the following drawings, and in which:

FIG. 1 is a perspective view of a carton including a finger tab of the present invention for initiating opening of a flip cover;

FIG. 2 is a front view of the finger tab of FIG. 1;

FIG. 3 is a front view of the first comparison finger tab (A);

FIG. 4 is a front view of the first comparison finger tab (B);

FIG. 5 is a front elevational view of the first comparison finger tab (C);

FIG. 6 is a front elevational view of the first comparison finger tab (D);

FIG. 7 is a front elevational view of the first comparison finger tab (E);

FIG. 8 is a front elevational view of the first comparison finger tab (F); and is

FIG. 9 is a front elevational view of the first comparison finger tab (G);

Detailed Description

The following text sets forth a broad description of numerous different embodiments of the disclosure. The description is to be construed as exemplary only and does not describe every possible embodiment since describing every possible embodiment would be impractical, if not impossible. It will be understood that any feature, characteristic, component, composition, ingredient, product, step, or method described herein can be deleted, combined with or substituted for, in whole or in part, any other feature, characteristic, component, composition, ingredient, product, step, or method described herein. Numerous alternative embodiments could be implemented, using either current technology or technology developed after the filing date of this patent, which would still fall within the scope of the claims.

Fig. 1 is a perspective view of a carton (1) including a finger tab (3) for actuating opening of a flip top (5). The longitudinal axis (1) is along the length of the carton (10). The carton is preferably rectangular, preferably made of paperboard, and preferably has those characteristic dimensions for containing oral care products such as toothpaste. For example, the toothpaste tube may contain from 5g to 300g of toothpaste, preferably from 80g to 250 g; non-limiting examples include 90g, 140g and 300g toothpaste.

The flap (5) is preferably made of cardboard, and more preferably the carton (1) is made of cardboard. The paperboard has a density of 50g/m²To 700g/m²Preferably 100g/m²To 600g/m²More preferably 200g/m²To 500g/m²Still more preferably 300g/m²To 400g/m²The density of (c). The paperboard can be 100% virgin material, 100% recycled material, or a combination thereof, preferably the paperboard is virgin material. The six-sided rectangular paper cassette (1) has the following dimensions: the length of the carton (3), measured along the longitudinal axis (10), is from 10cm to 40cm, preferably from 18cm to 30 cm. The width of the carton (1) is from 3cm to 9cm, preferably from 4cm to 8 cm. The height of the carton (3) is from 2cm to 8cm, preferably from 3cm to 7 cm. When not containing the contents, the internal volume of the carton (1) is 300cm³To 900cm³Preferably 400cm³To 800cm³. Although not shown, preferably the carton contains an oral care product (e.g., toothbrush, dentifrice, combinations thereof) in the interior volume, more preferably the oral care product is a tube of toothpaste. The flap (5) of the carton (1) is formed as part of the front side (4) and the top side (2), wherein the front and top sides (4, 2) are contiguous. The front and top sides (2) extend along a longitudinal axis (10). These sides (4, 2) are distinguished from left and right end sides (18, 8) lying in a plane orthogonal to the longitudinal axis (10). The finger tab (3), or more specifically the main body finger tab (2), is located on the front side (4), preferably in the middle portion 1/3 of the length or width dimension of (front side (4)), and more preferably in the middle portion 1/3 of both the length and width dimensions of (front side (4)). The flap (5) is defined by a first line of weakness (11) and a second line of weakness (12) opposite each other. Preferably, the carton (1) has bilateral symmetry along a plane orthogonal to the longitudinal axis (10) and at a midpoint of the longitudinal axis (10). The first and second symmetry lines (11, 12) are each other in the plane with bilateral symmetryThis is the opposite. Between the interface of the top side (2) and the rear side (16) there is a foldable edge (14) which, when opened, is a hinge for the flap (5). The rear side (16) is opposite the front side (4). The top side (2) is located between the rear side (16) and the front side (4). The first line of weakness (11) and the second line of weakness (12) converge on the front side (4) to the finger tab (3). The flap (5) may occupy 60% to 100%, preferably 70% to 95% of the surface area of the top side (2) of the carton (1). And the flap (5) may also occupy 15% to 95%, preferably 20% to 90%, of the surface area of the front side (4) of the carton (1). The flap (5) extends continuously from the top and front sides (2, 4).

The user presses the finger tab (3) inwardly (towards the interior of the carton (1)) with one finger (i.e. with a finger) to break the pressing tab from the front side (4), thereby grasping the now exposed edge of the flap (5) and pulling the flap (5) open, rupturing the first and second lines of weakness (11, 12) to expose the interior of the carton (5) and the product contained therein (e.g. an oral care product such as a toothpaste tube (not shown)). The flap (5) can be opened from the front side (4) and the adjoining top side (2). The push tab (3) and flip (2) are easy to open by the user, but do not open prematurely (under typical shipping and handling conditions).

Without being bound by theory, this relatively centered position of the finger tab (3) may help balance the ease of opening and robust integrity (during typical shipping and handling) given the observation that the pressure at which the finger tab is opened will be approximately equal across the front side of the carton (relative to biasing toward the corners). Furthermore, this need for balancing is particularly acute in paperboard in view of the relatively minimum thickness and properties of the paperboard material.

Turning to fig. 2, the left and right lines of weakness (11, 12) have at least a portion of the line of weakness cut as 1/2 proximate the first and second intersection points (31, 32), respectively. The line of weakness may comprise any suitable type including, for example, a perforation line, a die cut line, or a score line to facilitate opening of the flap (5). Preferably, the entire left and right lines of weakness (11, 12) are 1/2 cut lines of weakness from the foldable edge (14) to the first and second points of intersection (31, 32). "1/2 cut line of weakness" refers to a line of weakness that is formed when a first die having a first blade cuts into a carton precursor (e.g., paperboard) through about half of the thickness of the carton precursor, and an opposing second die having a second blade also cuts into the carton precursor through about half of the thickness. The cuts made by the respective blades are made in a direction transverse to the thickness of the carton precursor. The cuts (of the first and second blades) are not made directly opposite each other, but are at a distance of 2mm to 10mm, preferably 3mm to 8mm, more preferably 4mm to 7mm, alternatively about 4mm, 5mm or 6mm from each other. Thus, each cut line (from the knife first and second blades) will generally mimic the other (but at the indicated distance). The user delaminates the carton precursor as the flap (5) is unfolded, between two opposing cut lines (1/2 cut the line of weakness). In one example, the carton precursor is paperboard having a basis weight of 350 grams per square meter. Preferably, the first 1/2 cut line of weakness and the second 1/2 cut line of weakness (11, 12) each independently have a length of at least 1cm, preferably at least 2cm, more preferably at least 3cm, as measured from each respective first and second intersection point (31, 32). Those skilled in the art will appreciate that the distance between the first and second blades (e.g., 5mm) will converge (i.e., the distance between the blades will decrease) when the lines of weakness (11, 12) reach the first and second intersection points (31, 32), respectively. 1/2 the line of weakness provides an advantage of providing a finish on the surface of the carton (1) providing graphics and artwork that appears to be of better quality than other types of lines of weakness that would otherwise distort the finish of the paperboard.

The finger tab (5) comprises a first intersection point (31) formed by the intersection of a first 1/2 cut line of weakness (11) and a first perforation (21), wherein the first perforation is at least 2 mm. Similarly, a second intersection (32) is formed by the intersection of a second 1/2 cut line of weakness (12) with a second perforation (22). The first and second intersection points (31, 32) are opposite to each other. At least one connecting line (7A) is located between the first and second perforations (21, 22) to form a first perforation line (41). The "perforations" make cuts through the sides of the carton (1), i.e. the thickness of the carton. Preferably, the cut-out is made at an angle perpendicular to the side surface. By "line" is meant the portion of the side, i.e. the cardboard, that is not cut along the perforation line. The perforation lines may be linear or arcuate or a combination thereof.

Preferably, the length of the first perforations (21) is 2mm to 7mm, preferably greater than 2mm to 5mm, more preferably 2.5mm to 4.5 mm. Non-limiting examples include lengths of 3, 3.5, 3.8, 4.1, 4.5 mm. Preferably, the length of the second perforations (22) is at least 2mm, preferably 2mm to 7mm, more preferably greater than 2mm to 5mm, still more preferably 2.5mm to 4.5 mm. Non-limiting examples include lengths of 3, 3.5, 3.8, 4.1, 4.5 mm. Based on observations from comparative samples (discussed below) and without being bound by theory, the length of the first and second perforations (21, 22) intersecting the first and second intersections (31, 32) is an important factor in the finger tab (3), exhibiting a balance of ease of opening but avoiding premature opening (from typical shipping and handling).

The first perforation line (41) may further comprise a plurality of additional perforations (70A-70E), preferably 2 to 16 additional perforations, more preferably 3 to 8 additional perforations. Preferably, each of the plurality of additional perforations (70A-70E) independently has a length of 0.5mm to 6mm, preferably 1 to 5mm, more preferably 2 to 4 mm. Preferably, each of the plurality of additional perforations (70A-70E) has the same length. In the non-limiting example shown in FIG. 2, there are a total of seven perforations (i.e., first and second (21, 22) of 3.8mm in length; and additional perforations (70A-70E) of 3mm each).

Preferably, the length of the at least one connection line (7A) is from 0.1mm to 3mm, preferably from 0.3mm to 2mm, more preferably from 0.5mm to 1.5mm, still more preferably from 0.7mm to 1.3 mm. Preferably, the first perforation line (41) further comprises a plurality of additional connecting lines (7B-7F). The plurality of additional connections (7B-7F) may amount to 2 to 18 additional connections, more preferably 3 to 9 additional connections. Preferably, each of the plurality of additional wires (7B-7F) independently has a length of 0.1mm to 3mm, preferably 0.3mm to 2mm, more preferably 0.5mm to 1.5 mm. In one non-limiting example shown in fig. 2, there are a total of six connecting lines (7A-7F) (of the first perforation lines (41)), each having a length of 1 mm.

The linear distance between the first intersection point (31) and the second intersection point (32) is 10mm to 70mm, preferably 20mm to 50mm, more preferably 24mm to 34 mm. For example, the distance between the first intersection point (31) and the second intersection point (32) is 25, 26, 27, 28, 28.6, 29, 30, or 31mm, preferably 28.6 mm. The first perforation line (41) between the first intersection point (31) and the second intersection point (32) is substantially linear, preferably linear.

Preferably, the finger tab (3) further comprises a third perforation (33) intersecting at the first intersection point (31), and more preferably comprises a fourth perforation (44) intersecting at the second intersection point (32). At least a second line (9A) is located between the third and fourth perforations (33, 44, respectively) to form a second perforation line (42). Preferably, the first perforation line (41) is located close to the flap (5) and the second perforation line (42) is located distal to the flap (5) (i.e. close to the non-flap region (6)). Preferably, the second perforation line (42) is non-linear, preferably arcuate. The arc may have a constant radius or a non-constant radius. The regular arc has a constant radius. More preferably, the second perforation line (32) has a regular arc with a radius of 10mm to 30mm, preferably 12mm to 24mm, more preferably 15mm to 21 mm; wherein the center point of the radius is in the flip (5). Non-limiting examples of radii are 16, 17, 18, 18.4, 19 or 20 mm.

The second perforated line (42) preferably also comprises a plurality of additional lines (9B-9E), preferably 2 to 12 additional lines, more preferably 3 to 5 additional lines. Preferably, each of the plurality of additional connecting lines independently has a length of 0.1mm to 6mm, preferably 0.2mm to 2mm, more preferably 0.5mm to 1.5mm (wherein the length is measured along the second perforation line). For example, if the second perforation line is arc-shaped, the length is measured along the arc. In the non-limiting example shown in fig. 2, there are a total of 5 connecting lines, i.e., (9A-9E) (of the second perforated line (42)), each having a length of 1mm (along the mountain arc).

The second perforation line (42) preferably further comprises a plurality of perforations (90A-90D), preferably 2 to 12 additional perforations, more preferably 3 to 5 additional perforations. Preferably, each of the plurality of additional perforations independently has a length of 4mm to 7mm, preferably 4.5mm to 6.5mm, more preferably 5mm to 6mm (where the length is measured along the second perforation line). By way of non-limiting example, the additional perforations may have a length of 4mm, 5mm, 5.5mm, 6mm, or 7 mm. The second perforation line (42) has a length of 15mm to 50mm, preferably 20mm to 45mm, more preferably 28mm to 38 mm. Non-limiting examples of such lengths are 30mm, 33mm, 33.8mm and 36 mm. The length is measured along a second perforation line (42). For example, if the second perforation line (42) is arcuate, the length is measured along the arc. In the non-limiting example shown in FIG. 2, there are a total of seven perforations (i.e., the first and second (21, 22) are each 3.8 mm; and the additional perforations (70A-70E) are each 3mm in length).

The angles are formed at first and second intersection points (31, 32) a first α angle (51) is formed in the flap (5) between the first 1/2 cut line of weakness (11) and the first perforation (21) and is 120 to 200 degrees, preferably 140 to 180 degrees, more preferably 150 to 175 degrees a second α angle (52) is formed in the flap (5) preferably between the second 1/2 cut line of weakness (12) and the second perforation (22) and is 140 to 190 degrees, preferably 150 to 180 degrees, more preferably 160 to 175 degrees a first α angle and a second α angle (51, 52) are preferably the same a first α angle (51) and a second α angle (52) are each 150, 160, 170, 180 or 190 degrees, 170 degrees in a non-limiting example.

A first β angle (61) is formed between the first 1/2 cut line of weakness (11) and the third perforations (33) and is 110 to 170 degrees, preferably 120 to 160 degrees, more preferably 130 to 150 degrees, similarly a second β angle (62) is preferably formed between the second 1/2 cut line of weakness (12) and the fourth perforations (44) and is 110 to 170 degrees, preferably 120 to 160 degrees, more preferably 130 to 150 degrees, preferably the first β angle and the second β angle (61, 62) are the same, in a non-limiting example, the first β angle (61) and the second β angle (62) are each 120, 130, 140, 150 or 160 degrees, preferably 140 degrees.

The first θ angle (71) is formed between the first through hole (21) and the third through hole (33), and is 10 to 70 degrees, preferably 20 to 60 degrees, more preferably 30 to 50 degrees. Similarly, a second θ angle (72) is preferably formed between the second perforation (22) and the fourth perforation (44) and is 10 to 70 degrees, preferably 20 to 60 degrees, more preferably 30 to 50 degrees. Preferably, the first and second theta angles (71, 72) are the same. In non-limiting examples, the first theta angle (71) and the second theta angle (72) are each 30 degrees, 40 degrees, 50 degrees, 60 degrees, or 70 degrees, preferably 50 degrees.

The sum of the first α angle (51), the first β angle (61), and the first theta angle (71) equals 360 degrees if present, the sum of the second α angle (51), the second β angle (61), and the second theta angle (71) also equals 360 degrees preferably the finger pull tab (3) has bilateral symmetry (in a plane orthogonal to the longitudinal axis (10) and at the midpoint of the longitudinal axis (10)).

The body (2) of the finger tab (3) may be defined by a portion circumscribed between the first and second intersection points (31, 32) and the first and second perforation lines (41, 42). Thus, the body (2) preferably has an area of 60mm2 to 210mm2, preferably 90mm2 to 180mm2, more preferably 110mm2 to 160mm 2. Non-limiting examples of the area of the body (2) of the finger tab (3) include 110mm2, 120mm2, 130mm2, 140mm2, 150mm2 or 160mm 2.

Examples

The user data (via consumer testing) for the cartons of the present invention and comparative examples are summarized, the stack shipping test for the cartons of the present invention is also summarized, the carton including the finger tab of fig. 1 and 2 is one example of the present invention the carton of the present invention is compared to comparative examples (a-G) of fig. 4-9, the size of the carton (229mm × 55mm × 44mm), the paperboard type of the starting material (i.e., 350G/m)²) And 1/2 cut lines of weakness defining the flaps (opposing blades separated by 5mm) were the same for each of the cartons (i.e., inventive and comparative), except for the finger tab.

The finger tab (3) of the present invention of fig. 2 comprises a first intersection (31) formed by the intersection of a first 1/2 cut line of weakness (11) with a first perforation (21), wherein the perforation is 3.8mm long and the line (7A) immediately adjacent the first perforation (21) is 1mm in length. The second intersection (32) is formed by the intersection of a second 1/2 cut line of weakness (12) and a second perforation (22) and has a length of 3.8 mm. The length of the line (7F) next to the second perforation (22) is 1 mm. A first (linear) perforation line (41) is located between the first and second intersection points (31, 32). The first perforation line (41) has five further perforations (70A-70E), each of a length of about 3 mm. And the linear perforation line (41) has a total of six connecting lines (7A-7F), each having a length of about 1 mm. The inventive finger tab (3) of fig. 2 also has a second (arcuate) perforation line (42), wherein a third perforation line (33) and a fourth perforation line (44) intersect the first intersection point (31) and the second intersection point (32), respectively.

Stacking tests and shipping tests (both types) were performed on the cartons of this invention and the finger tabs remained intact despite the compressive and other stresses associated with these tests. One type of transportation test involves mass production. A plurality of carton boxes (e.g., for retail customers) are stacked into a shipping container and then pulled from one location to another, and then inspected for premature opening of the cartons. Another type of transportation test is the ISTA e-commerce test. The results from these tests indicate that the cartons of the present invention have not been opened prematurely.

FIG. 3 shows a comparative finger tab (103) A. The first intersection (131) is formed by the intersection of a first 1/2 cut line of weakness (111) and a score line (141). Notably, neither perforations nor lines are present in the scribe line (142). The score lines are made of thin metal edges (but not cutting knives) that press against the cardboard, thus forming compression creases to facilitate folding/suspension. A second intersection (132) is formed by the intersection of a second 1/2 cut line of weakness (112) with the score line (141). The score line (141) is located between the first and second intersection points (131, 132). The finger tab (103) of example a herein also has a (curved) perforation line (142), wherein the third perforation line (133) and the fourth perforation line (144) intersect the first intersection point (131) and the second intersection point (132), respectively. This perforated line (142) of example a is similar to the second perforated line (43) of the present invention. The perforation line (142) has a total of six perforations (133, 190A-190D, 144), each 4.8mm in length (measured along an arc) and a total of five lines (109A-109E) therebetween, each 1mm in length (measured along an arc). The results show that the user (through consumer testing) cannot easily push in the finger tab to open the flip cover. The score lines provide too much of an obstacle for the user. Thus, comparative example a of fig. 3 demonstrates the importance of having a first perforation line and a first perforation of at least 1mm length.

FIG. 4 is another comparative finger tab (203) B. The first 1/2 cut lines of weakness and the second 1/2 cut lines of weakness (211, 212) are similar to those of the present invention (fig. 2). It is noted, however, that neither the first nor the second intersection point exists. The first perforation line (241) is substantially a single perforation in the central portion 1/3 of the first perforation line (241), and the connecting lines (207A, 207B) are located on either end of the first perforation line (241). The second perforation line (242) of this comparative example B is similar to the second perforation line of the present finger tab of the present invention, except that the third and fourth perforations (233, 244) do not intersect the first and second intersection points that would otherwise intersect. The results show that the user (through consumer testing) cannot easily push in the finger tab to open the flip cover. Thus, comparative example B of fig. 4 demonstrates the importance of having a first (and second) intersection. And the connection line (207A, 207B) of the first perforation line (241) may be another obstacle to the ease of opening.

FIG. 5 is another comparative finger tab (303) C. Embodiment C is similar to previous embodiment B, but the lines (309A-309E) and perforations (333, 390A-390D, 344) of the second perforation line (342) are of different sizes. The first 1/2 cut line of weakness and the second 1/2 cut line of weakness (311, 312) are similar to those of the present invention (fig. 2). It is noted, however, that neither the first nor the second intersection point exists. The first perforation line (341) is substantially a single perforation in the central portion 1/3 of the first perforation line (341), and the connecting lines (307A, 307B) are located on either end of the first perforation line (341). The second perforation line (341) has a total of six perforations (333, 390A-390D, 344), each about 4mm in length (measured along an arc) and a total of five lines (309A-309E) therebetween, each about 2mm in length (corresponding to 1mm compared to example B). The results show that the user (through consumer testing) cannot easily push in the finger tab to open the flip cover. Thus, comparative example B of fig. 4 demonstrates the importance of having a first (and second) intersection. And the wiring (207A, 207B) may be a further obstacle to the ease of opening. The greater distance of the connecting lines in the second perforated line also provides an additional greater barrier (compared to example B above).

FIG. 6 is another comparative finger tab (403) D, embodiment D having neither a first nor a second intersection. The first (linear) perforation line (441) and the second (arcuate) perforation line (442) fail to intersect each other and fail to intersect the respective 1/2 cut lines of weakness (411, 412). There is a gap of about 1mm on either end of the first perforated line (441) that would otherwise intersect either respective end of the second perforated line (442). In addition, the first 1/2 cut line of weakness and the second 1/2 cut line of weakness (411, 412) each also have a gap of about 1mm that would otherwise intersect either respective end of the second perforation line (442). The first perforated line (441) has a total of six perforations (421, 470A-470D, 422), each approximately 2.8mm in length, and a total of five lines (407A-407E) therebetween, each approximately 2mm in length. The second (arcuate) perforation line (442) has a total of five perforations (433, 490A-490C, 444), each approximately 5.2mm in length (measured along the arc) and a total of five lines (409A-409D) therebetween, each approximately 2mm in length (measured along the arc). The results show that the user (through consumer testing) cannot easily push in the finger tab to open the flip cover. Thus, comparative example D of fig. 6 demonstrates the importance of having a first (and second) intersection. Furthermore, the first perforation line is relatively longer at a distance of 2mm from the line, which may provide an additional barrier to ease of opening. Further, the distance of the connecting line of the second perforation line is also relatively longer by 2mm, which may also provide an additional obstacle to the ease of opening.

FIG. 7 is another comparative finger tab (503) E, embodiment E having neither a first nor a second intersection. The first (linear) perforation line (541) fails to intersect the second (arcuate) perforation line (542). There is a gap of about 1mm on either end of the first perforation line (541) that would otherwise intersect either respective end of the second perforation line (542). In addition, the first 1/2 cut line of weakness and the second 1/2 cut line of weakness (511, 512) each also have a gap of about 1mm that would otherwise intersect either respective end of the second perforation line (542). The first perforated line (541) has a total of six perforations (521, 570A-570D, 522) each about 2.8mm in length, and a total of five lines (507A-507E) therebetween each 2mm in length. The second (arcuate) perforation line (542) has a total of six perforations (533, 590A-590D, 544), each having a length of about 4.8mm (measured along the arc) and a total of five lines (509A-509E) therebetween, each having a length of 1mm (measured along the arc). The results show that the user (through consumer testing) cannot easily push in the finger tab to open the flip cover. Thus, comparative example E of fig. 7 demonstrates the importance of having a first (and second) intersection. Furthermore, the first perforation line is relatively longer at a distance of 2mm from the line, which may provide an additional barrier to ease of opening.

FIG. 8 is another comparative finger tab (603) F, embodiment F having neither a first nor a second intersection. The first (linear) perforation line (641) fails to intersect the second (arcuate) perforation line (642). There is a gap of about 1mm on either end of the first perforated line (641) that would otherwise intersect either respective end of the second perforated line (642). In addition, the first 1/2 cut line of weakness and the second 1/2 cut line of weakness (611, 612) each also have a gap of about 1mm that would otherwise intersect either respective end of the second perforation line (642). The first perforation line (641) has a total of six perforations (621, 670A-670D, 622), each approximately 2.8mm in length, and a total of five lines (607A-607E) therebetween, each 2mm in length. The second (arcuate) perforation line (642) has a total of six perforations (633, 690A-690D, 644), each approximately 4mm in length (measured along the arc) and a total of five lines (609A-609E) therebetween, each 2mm in length (measured along the arc). The results show that the user (through consumer testing) cannot easily push in the finger tab to open the flip cover. Thus, comparative example F of fig. 8 demonstrates the importance of having a first (and second) intersection. Furthermore, the first perforation line is relatively longer at a distance of 2mm from the line, which may provide an additional barrier to ease of opening. Further, the distance of the connecting line of the second perforation line is also relatively longer by 2mm, which may also provide an additional obstacle to the ease of opening.

FIG. 9 is another comparative finger tab (703) G, embodiment G having neither a first nor a second intersection. The first (linear) perforation line (741) fails to intersect the second (arcuate) perforation line (742). There is a gap of about 0.8mm on either end of the first perforated line (741), which would otherwise intersect either respective end of the second perforated line (742). In addition, the first 1/2 cut line of weakness and the second 1/2 cut line of weakness (711, 712) each also have a gap of about 1mm that would otherwise intersect either respective end of the second perforation line (742). The first perforated line (741) has a total of seven perforations (721, 770A-770E, 722), each 3mm in length, and a total of six lines (707A-707F) therebetween, each 1mm in length. The second (arcuate) perforation line (742) has a total of six perforations (733, 790A-790D, 744), each approximately 4.8mm in length (measured along the arc) and a total of five lines (709A-709E) therebetween, each 1mm in length (measured along the arc). The results show that the user (through consumer testing) cannot easily push in the finger tab to open the flip cover. Thus, comparative example G of fig. 9 demonstrates the importance of having a first (and second) intersection.

In summary, the embodiment of the invention of fig. 2 demonstrates ease of opening (as compared to comparative examples a-G) and does not open prematurely under typical shipping and handling conditions.

The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Rather, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm".

Each document cited herein, including any cross referenced or related patent or patent application and any patent application or patent to which this application claims priority or its benefits, is hereby incorporated by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with any disclosure of the invention or the claims herein or that it alone, or in combination with any one or more of the references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.

While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims

1. A carton (1) comprising a finger tab (3) for initiating opening of a flip top lid (5), wherein the finger tab (3) comprises a first intersection point (31), wherein the first intersection point is formed by intersection of a first 1/2 cut line of weakness (11) and a first perforation (21), wherein the first perforation has a length of at least 1 mm.

2. The carton (1) according to claim 1 wherein the carton (1) further comprises an opposing second 1/2 cut line of weakness (12) intersecting the second perforation (22) to form a second intersection (32), and at least one line of weakness (7A) between the first and second perforations (21, 22) to form a first perforation line (41);

preferably, the first perforations (21) have a length of 2mm to 7mm, preferably greater than 2mm to 5mm, more preferably 2.5mm to 4.5 mm;

more preferably, the length of the second perforations (32) is at least 2mm, preferably from 2mm to 7mm, more preferably from more than 2mm to 5mm, still more preferably from 2.5mm to 4.5 mm;

still more preferably, the length of said at least one connection line (7A) is comprised between 0.1mm and 3mm, preferably between 0.3mm and 2mm, more preferably between 0.5mm and 1.5mm, still more preferably between 0.7mm and 1.3 mm;

still more preferably, the carton is a cardboard carton (1).

3. A carton (1) as claimed in claim 1 or 2 wherein the carton (1) further comprises a third perforation (33) intersecting at the first point of intersection (31);

preferably, a fourth perforation (44) intersecting at said second intersection point (32);

more preferably, at least a second line (9A) between said third and fourth perforations (33, 44, respectively) to form a second perforation line (42); and

even more preferably, wherein the first perforation line (41) is proximal to the flap (5) and the second perforation line (42) is distal to the flap (5).

4. Carton (1) according to any of the preceding claims, characterized in that a first α angle (51) is formed in the flap (5) between the first 1/2 cut line of weakness (11) and the first perforation (21) and is between 120 degrees and 200 degrees, preferably between 140 degrees and 180 degrees, more preferably between 150 degrees and 175 degrees, and

preferably, a second α angle (52) is formed in the flap (5) between the second 1/2 cut line of weakness (12) and the second perforation (22) and is 140 to 190 degrees, preferably 150 to 180 degrees, more preferably 160 to 175 degrees.

5. Carton (1) according to any of claims 3 to 4, characterized in that a first β angle (61) is formed between the first 1/2 cut line of weakness (11) and third perforation (33) and is 110 to 170 degrees, preferably 120 to 160 degrees, more preferably 130 to 150 degrees, and

preferably, a second β angle (62) is formed between the second 1/2 cut line of weakness (12) and the fourth perforation (44) and is 110 to 170 degrees, preferably 120 to 160 degrees, more preferably 130 to 150 degrees.

6. A carton (1) according to any of claims 3 to 5 wherein a first θ -angle (71) is formed between the first perforation (21) and the third perforation (33) and is 10 to 70 degrees, preferably 20 to 60 degrees, more preferably 30 to 50 degrees;

preferably, a second θ angle (72) is formed between the second perforation (22) and the fourth perforation (44) and is 10 to 70 degrees, preferably 20 to 60 degrees, more preferably 30 to 50 degrees.

7. A carton (1) according to any of the preceding claims, characterized in that the linear distance between the first intersection point (31) and the second intersection point (32) is 10mm to 70mm, preferably 20mm to 50mm, more preferably 24mm to 34 mm;

preferably wherein the first perforation line (41) between the first and second intersection points (31, 32) is substantially linear, preferably linear.

8. A carton (1) as claimed in any preceding claim wherein the first perforation line (41) further comprises a plurality of additional lines (7B-7F), preferably from 2 to 18 additional lines, more preferably from 3 to 9 additional lines;

preferably, wherein each of the plurality of additional connecting lines independently has a length of 0.1mm to 3mm, preferably 0.3mm to 2mm, more preferably 0.5mm to 1.5 mm.

9. A carton (1) according to any of the preceding claims wherein the first perforation line further comprises a plurality of additional perforations (70A-70E), preferably 2 to 16 additional perforations, more preferably 3 to 8 additional perforations;

preferably wherein each of the plurality of additional perforations is independently 0.5mm to 6mm, preferably 1mm to 5mm, more preferably 2mm to 4mm in length.

10. Carton (1) according to any one of the preceding claims, characterized in that the second perforation line (42) is non-linear, preferably curved, more preferably a regular arc, still more preferably the regular arc has a radius of 10mm to 30mm, preferably 12mm to 24mm, more preferably 15mm to 21 mm.

11. Carton (1) according to any of the preceding claims, characterized in that the second perforation line (42) has a length of 15 to 50mm, preferably 20 to 45mm, more preferably 28 to 38 mm.

12. A carton (1) according to any preceding claim wherein the second perforation line (42) further comprises a plurality of additional lines (9B-9E), preferably 2 to 12 additional lines, more preferably 3 to 5 additional lines;

preferably, wherein each of the plurality of additional connecting lines independently has a length of 0.1mm to 6mm, preferably 0.2mm to 2mm, more preferably 0.5mm to 1.5 mm.

13. A carton (1) according to any of the preceding claims wherein the second perforation line (42) further comprises a plurality of perforations (90A-90D), preferably 2 to 12 additional perforations, more preferably 3 to 5 additional perforations;

preferably wherein each of the plurality of additional perforations is independently 4mm to 7mm, preferably 4.5mm to 6.5mm, more preferably 5mm to 6mm in length.

14. A carton (1) as claimed in any preceding claim wherein the body (2) of the finger tab (3) has an area of 60mm²To 210mm²Preferably 90mm²To 180mm²More preferably 110mm²To 160mm²(ii) a Wherein the body (2) of the finger tab (3) is defined by a portion circumscribing between the first and second intersection points (31, 32) and the first and second perforation lines (41, 42).

15. The carton (1) according to any of the preceding claims, characterized in that:

at least the flap (5) is made of paperboard, preferably the carton is made of paperboard, preferably the paperboard has 50g/m²To 700g/m²More preferably 100g/m²To 600g/m²Still more preferably 200g/m²To 500g/m²Still more preferably 300g/m²To 400g/m²(ii) a density of (d);

preferably, the carton (1) is a six-sided rectangular carton (1) having the following dimensions: the length of the carton (1) is 10cm to 40cm, preferably 18cm to 30 cm; preferably, the width of the carton (1) is from 3cm to 9cm, preferably from 4cm to 8 cm; and more preferably the carton (1) has a height of from 2cm to 8cm, preferably from 3cm to 7 cm;

more preferably, wherein said six sided momentThe carton (1) comprises an internal volume, when free of contents, of 300cm³To 900cm³Preferably 400cm³To 800cm³；

Still more preferably, wherein the first 1/2 cut line of weakness and the second 1/2 cut line of weakness (11, 12) each independently have a length of at least 1cm, preferably at least 2cm, more preferably at least 3cm, as measured from each respective first and second intersection point (31, 32);

still more preferably, wherein the six-sided rectangular carton (1) contains an oral care product in the interior volume, preferably wherein the oral care product comprises a toothpaste tube;

even more preferably still, wherein the openable flap (5) of the carton (1) is formed as at least part of a front side (4) and abuts a top side (2) of the carton (1), and wherein the single long side position of the finger tab (3) is the front side (4); and is

Still more preferably, the body (2) of the finger tab (3) is located on the front side (4) of the carton, preferably in the middle 1/3 of the front side (4) in both the length and width dimensions.