JP2005082248A - Foldable carton, carton blank, and manufacturing method of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carton and a carton blank which are constructed so as to be easily opened by various big forces and a manufacturing method of the same. <P>SOLUTION: The carton is a foldable carton that has a manufacturer's connection section where two panels are bonded by an adhesive so as to be easily opened. One 15 of the two panels has a plurality of punch scores 8. The other panel 11 is coated with a coating material 56 and is provided with a plurality of uncoated "protrusion sections 9" which are aligned to the punch scores 8. The adhesive is disposed between the two panels by being aligned to the protrusions and the punch scores 8. The panel 15 having the punch scores 8 is preferably coated except an uncoated stripe 42 extended through almost the center of the punch scores. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a carton, in particular, a paperboard folding carton, a carton blank used for a carton, and a method for producing the same.

  In the packaging technology field, folding cartons are known. A carton is usually composed of a flat blank that is pre-cut from a paperboard sheet. The carton blank has a number of panels to form the sides of the carton. For example, a blank for a rectangular carton has four main panels, which form the four sides of the carton. To fix the shape of the carton after it is folded, a manufacturer joint, i.e. a closure tab, usually attached to one end of the blank is used. This tab is usually connected to one of the blank panels with an adhesive.

  Typical carton adhesives form a strong bond between tabs and panels. This joint between tabs and panels has a high shear strength. This means that it is difficult to separate the panels and tabs when they are moved laterally in the opposite direction, such as by rubbing. This prevents the carton from opening during shipping and storage. Also, adhesive bonding typically results in high peel strength, which is the force required to pull the tab away from the panel in a substantially vertical direction. High peel strength makes it difficult to tear apart the carton.

  In order to save paper and reduce costs and labor, it is desirable in the packaging industry to print product information inside a product carton. This eliminates the need for a print insert that details the features and usage of the product. In order to read the printed information, the carton has to be opened, but the methods that have been considered so far to make it easier have not been satisfactory.

  Generally, the carton can be opened by tearing at the location of the adhesive. However, the problem with this method is that it is difficult to obtain a clean tear. Due to the high peel strength of normal cartons, the tab and the first panel often do not completely separate when the user tears the carton. In many cases, the inside of the carton tears, making it difficult to read the printed inside of the carton. Even if the carton is not torn, separating the tab from the first panel can cause delamination inside the carton. This removes the inner surface layer of the paperboard where the printed material is described. Again, this makes it very difficult to read the information inside the carton.

  Another method used to help open the carton is to punch perforations in the paperboard along pre-scored lines. In that case, the user tears along the perforation and opens the carton. While this solves the problems associated with high peel strength, this process creates another disadvantage. First, this method is aesthetically inferior. After forming the perforations, the cut and exposed fibers remain along the perforations. Secondly, it is difficult to change the amount of force required to open the carton in this way. A high degree of perforation that allows the carton to be opened easily will affect the integrity of the carton. Increasing the degree of perforation will also increase the likelihood that the carton will open during filling and / or shipping. As a result, the degree of perforation and thus the ease of opening (easy to open) is limited. Also, when the carton is bent, the perforations are exposed, so there is a high possibility that unscheduled tearing along the perforations will occur.

  Accordingly, it is desirable in the art to provide a carton that is configured to open easily with various magnitudes of force. It would also be desirable to provide a low peel strength carton configured to eliminate delamination when the carton is opened.

The problem is a manufacturer joint having a panel with a plurality of punch scores and another panel defining a plurality of protrusions that match at least a portion of the punch scores. This is solved by the present invention, in which the bend carton is provided. The two panels are joined together by an adhesive placed between the punch score and the protrusion.
The folding carton according to the present invention includes a blank and a manufacturer joint. The blank has a folded structure to define an interior space for receiving the contents, and includes an inner surface bearing printed material, the folded blank defining a contents access opening; There is a content access flap that closes the content opening, the flap being movable, thereby allowing access to the contents of the carton.
The manufacturer joint is a manufacturer joint that secures the blank to the folded structure, and is peelable, thereby unfolding the blank in an open position exposing the printed matter, The manufacturer joint is separate from the content access flap. The manufacturer joint has a first panel, a second panel, and an adhesive.
The first panel has a thickness and a surface, the surface of the first panel has a plurality of punch scores, and the punch scores are only partially recessed in the thickness. .
The second panel is disposed adjacent to the first panel and has a surface facing the surface of the first panel, the surface of the second panel being at least partially coated with a coating material. , Having a plurality of protrusions, the protrusions being defined by a lack of the coating material and matching the punch score.
The adhesive is disposed between the first panel and the second panel, adheres the first panel and the second panel, and is disposed at a position aligned with the punch score and the protrusion.
The punch score and the protrusion may change any of dimensions, shape, number, or position, thereby achieving a predetermined peel strength and shear strength of the folded carton.
The carton blank according to the present invention is a first panel having a surface, wherein the surface of the first panel is at least partially coated with a coating material and has a plurality of protrusions, A protrusion is a first panel defined by a lack of the coating material and a second panel having a thickness and a surface, wherein the second panel has a plurality of punches on the surface of the second panel. Having a score, the punch score is only partially recessed in the thickness, and the punch score is configured to align with the protrusion when the blank is folded to form a carton A second panel and an uncoated stripe on the first panel, defined by a lack of the coating, on the first panel And a and uncoated stripes extending through the serial protrusion.
The carton manufacturing method according to the present invention includes (a) a step of making a carton blank including a first panel having a thickness and a surface, and a second panel having a surface, and (b) Forming a punch score on the surface; (c) forming a protrusion on the surface of the second panel; and (d) bending the blank into a carton to form the surface of the first panel. Mating with the surface of the second panel, whereby the punch score aligns with the protrusion.

  In a first embodiment of the invention, the punch score is placed on the carton adhesive panel. Except for the protrusions, the surface of the first panel of the carton facing the adhesive panel is coated. The protrusion is configured to match the punch score when the carton is assembled.

  In another embodiment, the adhesive panel has a coating on the entire surface having a punch score. An uncoated stripe is defined through the center of the punch score on the surface.

  In yet another embodiment of the present invention, both sides of the panel are coated except for uncoated stripes on the adhesive panel and protrusions on the first panel. The outer coating is typically used to prevent carton scratches during shipping and storage. When the product contained in the carton rubs the carton panel, the inner coating prevents scuffing. In all the above embodiments, the various combinations of punch scores, protrusions, uncoated stripes and coatings on the carton not only make it easy to open both the peel and shear strength of the carton without tearing the inner coating. The carton can be adjusted to a predetermined value suitable for providing a carton having sufficient strength to prevent early opening of the carton during transportation.

  The present invention is also a carton manufacturing method, wherein (a) forming a carton blank having a manufacturer joint and a first panel, (b) forming a punch score on one of the manufacturer joint and the first panel. (C) coating the other of the first panel and the manufacturer's joint, leaving a series of uncoated protrusions in a position that matches the punch score in the assembled carton, (d) folding the blank Providing a carton, and (e) securing the manufacturer joint to the first panel with an adhesive disposed between the punch score and the protrusion.

  The present invention provides a simple and low cost folding carton with relatively low peel strength and relatively high shear strength. The high shear strength counters unscheduled opening of the carton during transportation and storage. The low peel strength allows the consumer to easily open the carton so that the information printed on the inside can be accessed. The punch score also isolates panel tears that may occur when opening the carton, thereby helping to preserve the print inside the carton. In addition, peel strength and shear strength can be easily and independently changed by, among other things, changing the number, size and geometry of uncoated protrusions, uncoated stripes and punch scores, and the amount of adhesive used. Can do.

  The above and other objects, advantages and features of the present invention will be readily understood and appreciated by reference to the detailed description of the preferred embodiment and the drawings.

  An easy-to-open folding carton 1 according to a preferred embodiment of the present invention is shown in FIG. The carton 1 is a generally rectangular carton intended to contain cosmetic tubes or other similar contents. The carton 1 generally includes a plurality of panels 11, 12, 13 and 14 that define the side walls of the carton 1, dust flaps 27 (not shown), 28, 29, and 30, and lids that define the top and bottom of the carton 1. And flaps 25 and 26. Handling instructions, product data and other information are printed inside the carton 1. The carton 1 is provided with a manufacturer joint 50 that can be easily opened after the contents of the carton 1 have been removed so that the information printed on the inside of the carton 1 can be accessed. Although the present invention will be described in the context of a rectangular carton intended to contain a cosmetic tube or other similar contents, the present invention may be applied in substantially any shape and substantially any content. Well suited for use in cartons that hold objects.

  As described above, the carton 1 is generally rectangular and defines an interior space 52 for receiving one or more products. The carton 1 typically has a right panel 11, a front panel 12, a left panel 13 and a rear panel 14 that define the side walls of the container. The carton 1 further includes a pair of dust flaps 29, 30, an upper lid flap 26 that closes the top of the carton, a pair of dust flaps 27, 28, and a bottom lid flap 25 that closes the bottom of the carton 1. . Dust flaps 27, 28, 29 and lid flaps 25, 26 are shown in FIG. 1 in a substantially open position and are closed conventionally. As can be seen from FIG. 2, the bottom of the carton 1 remains in a substantially closed position, and the top of the carton 1 can be opened to access the product contained in the carton 1. Also, the upper part of the carton 1 usually remains open until the product is inserted into the inner space 52 of the carton 1 after manufacture. Product insertion is usually done on the assembly line.

  The panels 11, 12, 13 and 14 are arranged in a rectangular shape and are held in this shape by the adhesive panel 15. The adhesive panel 15 extends from the rear panel 14 and is bonded and fixed to the inner surface of the right panel 11. The adhesive panel 15 has a plurality of punch scores 8 (not shown) spaced apart. Furthermore, the right panel 11 is provided with a plurality of spaced apart projections 9 (not shown), which are preferably aligned with the punch score 8.

  Next, the carton 1 will be described in more detail with reference to FIGS. 3 to 8 and 14 showing a carton blank 10 used for manufacturing the carton 1 of the preferred embodiment. FIG. 3 shows the surface of the blank 10 for forming the carton 1. As shown, the carton 1 is preferably made from a single laminated paperboard blank 10 and folded as usual to form the carton 1. In a preferred embodiment, the paperboard blank is made from a conventional paperboard material having a thickness of about 0.10 to 0.024 inches. Individual paperboard will vary from application to application based primarily on the characteristics required of the carton. In a preferred embodiment, the blank 10 has a coated front and back surface. However, it is not necessary to coat any part of the blank surface. When using coating material 56, it can be applied by any method known in the art for applying coating material to paperboard, for example, a printing press. The coating material 56 is preferably a UV varnish, but any of a wide variety of conventional paperboard coating materials can be used. In a preferred embodiment, the surface of the blank 10 is coated with a UV varnish and the back side is also coated with a UV varnish.

  The basic structure of the carton blank is shown in FIG. The blank 10 has an upper end portion 16 and a lower end portion 17. The blank 10 further includes a right panel 11, a front panel 12, a left panel 13, a rear panel 14, and an adhesive panel 15. The right panel 11 is connected to the front panel 12 along the fold line 21. The front panel 12 is connected to the left panel 13 along the fold line 22. The left panel 13 is connected to the rear panel 14 along the fold line 23. The rear panel 14 is hingedly connected to the adhesive panel 15 along the fold line 24. The dimensions, shape and structure of the various panels can vary as desired from application to application.

  In addition, there is a bottom lid flap 25 and a top lid flap 26, which close the upper and lower ends of the carton 1 as described above. The bottom lid flap 25 is connected to the lower end portion 17 of the front panel 12 along the fold line 32, and the upper lid flap 26 is connected to the upper end portion 16 of the rear panel 14 along the fold line 31. The bottom lid flap 25 also has a locking tab 37 defined by a fold line 39. Similarly, the top flap 26 has a locking tab 38 defined by a fold line 40. Alternatively, the bottom lid flap 25 and top lid flap 26 could be connected to different panels.

  In the preferred embodiment, four dust flaps 27, 28, 29 and 30 are also provided. The dust flaps 27, 28, 29 and 30 are closed at the upper and lower ends of the carton before closing the lid flaps 25 and 26. Upper dust flaps 29 and 30 extend from the upper end 16 of the right panel 11 and the left panel 13, respectively. The upper dust flap 29 is connected to the right panel 11 along the fold line 33. The upper dust flap 30 is connected to the left panel 13 along the fold line 35. Similarly, the lower dust flaps 27 and 28 extend from the lower ends 17 of the right panel 11 and the left panel 13, respectively. The lower dust flap 27 is connected to the right panel 11 along the fold line 34, and the lower dust flap 28 is connected to the left panel 13 along the fold line 36.

  In the preferred embodiment shown in FIG. 4, the adhesive panel 15 extends from the rear panel 14 and is connected to it by a fold line 24. The adhesive panel 15 has a large number of punch scores 8 that are spaced apart. These punch scores 8 can be recessed within the adhesive panel 15 to almost any depth, but in a preferred embodiment, the punch scores 8 are recessed to about ½ the depth of the adhesive panel 15. Is done. In the illustrated embodiment, the punch scores 8 are circular, but they can be of almost any shape. The punch score 8 can be formed using any suitable method in the art, for example, by punching a blank 10. Note that for typical paperboard, adhesives and coatings, the punch score changes the size of the punch score 8 from application to application, making it easier to open the carton by facilitating separation between the layers of the laminated paperboard. . As a result, when the number of punch scores is large or the punch score has a large diameter, the carton is usually easily opened. Changes in the size, shape, number, and structure of the punch score mainly affect the peel strength of the carton 1. Therefore, the punch score characteristics can be changed so as to affect the peel strength of the carton 1 almost independently of the shear strength.

  FIG. 5 also shows an alternative embodiment of the adhesive panel 15. In this example, an uncoated stripe 42 is provided on the adhesive panel 15. The uncoated stripe 42 can be of any length, but in the preferred embodiment, the uncoated stripe 42 extends from the upper end 16 to the lower end 17 of the adhesive panel 15 through the center of the punch score 8. Yes. The uncoated stripe 42 can be formed using any method known in the art, for example, by defining a stripe on a printing plate used to apply the coating. Since the coating reduces adhesion, the dimensions of the uncoated stripe 42 (including both width and length) will affect the ease of opening the carton, i.e. the ease of opening the carton. The larger the uncoated stripe 42, the stronger the adhesion and the harder the carton will open. This will increase both the peel strength and shear strength of carton 1.

  FIG. 6 shows the back side of the blank 10. The difference between the back surface of the blank 10 and the front surface of the blank 10 in the preferred embodiment is only related to the adhesive panel 15 and the right panel 11. The punch score 8 and the uncoated stripe 42 are not present on the back surface of the adhesive panel 15. In a preferred embodiment, the back side of the right panel 11 is coated and has a number of uncoated parts, ie protrusions 9. These protrusions 9 can be formed using any suitable method in the art, for example, by defining the protrusions 9 on a printing plate used to apply the coating. The protrusion 9 can have any size and shape, but preferably has the same size and shape as the punch score 8. Since most coatings reduce adhesion, the dimensions of the protrusions 9 will affect both the peel strength and shear strength of the carton. The larger the protrusion 9, the stronger the peel and shear strength and the harder the carton will open. Preferably, the diameter of the protrusion 9 never exceeds the diameter of the punch score 8 in order to reduce the possibility of delamination.

  In a preferred embodiment, the number of protrusions 9 is the same as the number of punch scores 8 and the protrusions 9 are circular and their diameter is slightly smaller than the punch score 8. As shown in FIG. 7, when the front surface of the adhesive panel 15 is in contact with the back surface of the right panel 11, the protrusions 9 are arranged so that each protrusion 9 matches one punch score 8. It is preferable. Although the uncoated stripe 42 has been described above to pass through the punch score 8 on the adhesive panel 15, it can alternatively pass through the protrusion 9 on the right panel 11 as well. Regardless of which panel the uncoated stripe 42 is located, if there is an uncoated stripe 42, it is preferably when the right panel 11 and the adhesive panel 15 are in contact, as shown in FIG. It passes through the center of the protrusion 9 and the punch score 8.

  In another alternative embodiment, the protrusion 9 could be placed on the adhesive panel 15 instead of the right panel 11 and the punch score 8 could be placed on the right panel 11 instead of the adhesive panel 15 (not shown). ) In this alternative embodiment, the punch score 8 and the protrusion 9 are in alignment with each other, as in the preferred embodiment.

  The blank 10 is folded into a carton 1 using generally conventional techniques and equipment. The left panel 13 and the right panel 11 are bent 90 degrees along the fold lines 22 and 21. The rear panel 14 is bent 90 degrees along the fold line 23 toward the right panel 11. The adhesive panel 15 is bent 90 degrees downward along the fold line 24. The adhesive panel 15 is fitted inside the right panel 11, and the punch score 8 is matched with the protruding portion 9.

  As shown in FIGS. 1 and 14, the adhesive panel 15 is attached to the right panel 11 using a conventional adhesive 55. The adhesive 55 used is preferably a water-based adhesive, but other adhesives such as solution-type adhesives and hot-melt adhesives can also be used. In a preferred embodiment, the adhesive 55 is a water based cold adhesive. The adhesive 55 is preferably applied in a line extending substantially the entire length of the adhesive panel 15. There are many common methods in the art for applying such adhesives. For example, the adhesive can be applied with a roller along the punch score 8 on the adhesive panel 15, and the adhesive panel 15 and the right panel 11 can be pressed together and thereby joined together. This technique is typically performed during the folding process, but can be performed at any time prior to sealing. Another method is to coat the band portion of the adhesive panel 15 where the punch score 8 is disposed with a heat-activated adhesive. Next, the adhesive panel 15 and the right panel 11 are heated and pressed together, thereby bonding them. In this method, the adhesive 55 is typically applied to the blank 10 before folding, but can be applied at any time prior to sealing. The adhesive 55 to be used can be applied to the adhesive panel 15, the right panel 11 or both as long as the adhesive 55 contacts both the punch score 8 and the protrusion 9 when the corresponding panel is in contact. Are known in the art. Whichever method is used, it is preferable that the applied strip-shaped adhesive 55 is applied through the punch score 8 or the protruding portion 9 from the top to the bottom of the panel. Also, the strip portion preferably does not exceed the width of the punch score 8. However, even if the strip portion exceeds the punch score 8, the operability of the easy-open carton will not be affected. If uncoated stripe 42 is present, adhesive 55 should span the length of uncoated stripe 42.

  After the right panel 11 and the adhesive panel 15 are brought into close contact with each other, the dust flaps 28 and 30 are bent 90 degrees toward the right panel 11 along the folding lines 36 and 35, respectively. Dust flaps 27 and 29 are folded 90 degrees along fold lines 34 and 33 toward left panel 13, respectively. The bottom lid flap 25 is folded 90 degrees upward along the fold line 32, and the top lid flap 26 is folded 90 degrees downward along the fold line 31. The lock tab 37 of the bottom lid flap 25 is bent 90 degrees along the fold line 39 toward the rear panel 14. The lock tab 37 of the bottom cover flap 25 is inserted into the carton 1 so that the surface of the lock tab 37 is in contact with the back surface of the rear panel 14. In this state, the carton 1 can be easily filled with a desired content.

  After the carton 1 is filled, the top of the carton 1 is closed. Similarly, the locking tab 38 of the upper lid flap 26 is bent 90 degrees toward the front panel 12 along the fold line 40. The lock tab 38 of the upper lid flap 26 is bent to the lower side of the front panel 12 so that the surface of the lock tab 38 is in contact with the back surface of the front panel 12.

  To access the contents of the carton 1, the upper lid flap 26 and the upper dust flaps 29 and 30 are opened. To make it easier to indicate to the product user that product information is printed on the inside of the container, either on the top dust flap 29 or 30 or any other easily visible place on the outer surface of the carton An icon may be printed. An example of such an icon is shown in FIG. After removing the contents, the carton 1 can be easily unfolded to access information printed on the inside of the carton. The right panel 11 is peeled from the adhesive panel 15 along the joint between the adhesive panel 15 and the right panel 11. The adhesive panel 15 is easily peeled off at the position of the punch score 8 and provides an opening resistance that is less than the opening resistance required when there is no punch score 8.

  It may be desirable to adjust the peel and shear strength of the carton based on the size of the carton and the weight of the contents contained within the carton. In some cases, it may be necessary to reduce the peel strength so that the carton can be torn apart without tearing the rear panel adjacent to the adhesive strip. In some cases, it may be necessary to increase the shear strength of the carton so that movement of the contents of the carton during transport does not open the carton early. Many structures have been found to be effective alone or in combination with several structures to adjust peel or shear strength. The first of these structures is to add one or more slits 50 between the punch scores, as shown in FIG. As shown in FIG. 10, the slits usually extend between the punch scores 8 at positions near the outer diameter of the punch score 8. It may be desirable to provide two parallel slits 50 located on each side of the punch score 8, as shown in FIG. In general, the slits 50 are formed at the same depth as the punch score 8, but they need not be the same depth. The slits 50 may be provided between all the punch scores 8 found on the adhesive panel 15 or only between some punch scores 8. In order to reduce the peel strength of the carton and to limit tearing to “tear strips” formed by sets of parallel slits, it is generally incorporated to use slits 50 on the adhesive panel 15. Let's go.

  A second structure is shown in FIG. 11, which is generally directed to a change in the length of the uncoated lace stripe 42 provided above the punch score 8. In this structure, the uncoated lace stripe 42 is shortened and only extends to the end of the punch score 8. Alternatively, the uncoated lace stripe 42 can be of any length and width and can be placed anywhere along the length of the punch score 8 or protrusion 9. In general, longer and / or wider uncoated lace stripes 42 will result in increased peel strength of the carton.

  A third structure is shown in FIG. 12, which is a change in the shape of the protrusions 9 so that they do not align exactly with the punch score 8. In the structure shown in FIG. 12, the protrusion 9 is formed in an elliptical shape. Increasing the uncoated area of the right panel 11 will increase both peel and shear strength.

  A fourth structure that can be used to affect the peel and shear strength of the carton is to use different types of coatings 56 on the front and back surfaces of the carton. In general, varnish is used as a coating. Varnishes can be used in a variety of finishes, including matte and matte to high gloss. An example of a high gloss varnish is KSS817, INXCURE UV Flexo Coating, manufactured by INX International Inc Co., Edwardsville, Kansas, USA. An example of a low gloss varnish is UVC-3550, UV Curable Imprintable Gloss Coating manufactured by Wikoff Color Corp., Fort Mill, South Carolina, USA. An example of a matte finish is GREC-252, which is a UV Curable Imprintable Gloss Coating UVC-3550 and OK-412, a matte / matte agent manufactured by Wikoff Color Corp. of Fort Mill, South Carolina, USA. It is a combination. In general, the more “higher gloss” varnish is used, the lower the peel and shear strength. In connection with this type of change, a fifth structure that can be used to affect peel and / or shear strength is to first apply an ink to the adhesive panel 15 that matches the desired color of the carton. is there. The use of ink on the adhesive panel will generally reduce the peel strength of the carton because the varnish cannot bond as strongly with the paperboard blank.

  Table 1 shows what combinations of the above structures can be used to change the peel strength and / or shear strength of the carton. The following combinations are well suited for “tall” cartons. As used herein, a tall carton has a depth (D) that is greater than either the length (L) and / or the width (W) of the carton, as shown in FIG. In general, "Tall" cartons have a depth to length to width ratio of about 1.01 to 1 to 1 (1.01: 1: 1) to about 10 to 1 to 1 (10: 1: 1). )Will.

  Table 2 lists various combinations of peel and shear strength modification structures that are well suited for "short" cartons. As used herein, a “short” carton typically has a depth (D) that is less than or equal to either the length (L) and / or the width (W) of the carton. More specifically, short cartons typically have a depth to length to width ratio of about 1: 1 to 1: 1 (1: 1: 1) to about 0.1 to 1: 1 (0.1: 1: 1). ).

  The above description is a description of a preferred embodiment of the present invention. Various substitutions and changes may be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which should be construed according to the principles of patent law, including equivalent principles. it can. Any reference to a part in the claim in the singular, for example using the articles a, an, the or side, should not be construed as limiting the part to the singular.

1 is a left perspective view of a folded carton manufactured according to a preferred embodiment of the present invention. FIG. FIG. 6 is a right perspective view of a folded carton in a partially closed position. It is a perspective view of the carton blank used for manufacture of a carton. It is a top view of 1st Embodiment of a carton blank. It is a top view of 2nd Embodiment of a carton blank. It is a bottom view of 2nd Embodiment of a carton blank. It is a side view of a part of a carton showing a manufacturer joint according to the first embodiment. It is a side view of a part of a carton showing a manufacturer joint according to a second embodiment. FIG. 2 is a schematic diagram of icons printed on a carton. FIG. 4 is a top view of a carton showing the punch score and slit structure used to change the peel or shear strength of the carton. FIG. 6 is a top view of a carton showing a shortened uncoated lace stripe above the punch score used to change the peel or shear strength of the carton. FIG. 6 is a top view showing a modified protrusion structure used to change the peel or shear strength of the carton. FIG. 6 is a bottom view of an alternative embodiment of a carton blank. It is sectional drawing of 1st Embodiment of a carton blank.

Explanation of symbols

1 carton, 8 punch score, 9 protrusion, 10 blank, 25, 26 lid flap, 27, 28, 29, 30 dust flap, 11 right panel, 14 rear panel, 15 adhesive panel, 42 uncoated stripe, 50 slit, 55 Adhesive, 56 Coating material.

Claims (22)

A folding carton,
A blank having an inner surface carrying printed matter, having a folded structure to define an interior space for receiving contents,
The folded blank defines a content access opening;
A content access flap for closing the content opening;
The flap is movable, thereby allowing access to the contents of the carton;
A manufacturer's joint that secures the blank to the folded structure, which can be peeled, thereby unfolding the blank in an open position exposing the printed matter;
The manufacturer joint is separate from the content access flap;
A first panel having a thickness and a surface, wherein the first panel has a plurality of punch scores on the surface of the first panel, and the punch scores are partially recessed in the thickness. The first panel, which is just
A second panel disposed adjacent to the first panel, the second panel having a surface facing the surface of the first panel, the surface of the second panel being a coating material A second panel that is at least partially coated with and has a plurality of protrusions, the protrusions defined by a lack of the coating material and aligned with the punch score, and the first panel An adhesive disposed between the panel and the second panel to bond the first panel and the second panel, the adhesive disposed at a position aligned with the punch score and the protrusion,
A manufacturer joint having
A folding carton with
The folding carton, wherein the punch score and the protrusion can be changed in any of dimensions, shape, number or position, thereby achieving a predetermined peel strength and shear strength of the folding carton.   The carton of claim 1, further comprising a coating material on the surface of the first panel.   The carton of claim 1 or 2, further defining an uncoated stripe that extends the length of the protrusion on the second panel.   The carton of claim 1 or 2, further defining an uncoated stripe extending the length of the punch score on the first panel.   The carton according to claim 1 or 2, wherein each of the punch scores is recessed to about ½ of the thickness of the first panel.   The carton according to claim 1, wherein the protrusion has a shape different from the punch score.   The carton according to claim 1 or 2, wherein the protrusion is smaller than the punch score. A carton blank, a first panel having a surface, wherein the surface of the first panel is at least partially coated with a coating material and has a plurality of protrusions, the protrusions being A first panel defined by a lack of the coating material;
A second panel having a thickness and a surface, wherein the second panel has a plurality of punch scores on the surface of the second panel, and the punch scores are partially recessed in the thickness. And the punch score is configured to align with the protrusion when the blank is folded to form a carton,
An uncoated stripe on the first panel, defined by a lack of the coating and extending through the protrusion on the first panel;
Carton blank with   9. The at least one slit located between a pair of punch scores further defining at least one slit that is only partially recessed in the thickness of the second panel. Carton blank as described.   The carton blank according to claim 8, wherein the protrusion has a shape or a dimension different from the punch score. A carton manufacturing method,
(A) making a carton blank comprising a first panel having a thickness and a surface and a second panel having a surface;
(B) forming a punch score on the surface of the first panel;
(C) forming a protrusion on the surface of the second panel;
(D) folding the blank into a carton so that the surface of the first panel is aligned with the surface of the second panel so that the punch score aligns with the protrusion. Method   The manufacturing method according to claim 11, further comprising a step of applying an adhesive to at least one of the surface of the first panel and the second panel.   The manufacturing method according to claim 11, further comprising: applying the adhesive along a line through which the punch score of the first panel passes.   The manufacturing method of Claim 11 including the step of apply | coating the said adhesive along the line which the said protrusion part of the said 2nd panel passes.   The manufacturing method according to claim 14, wherein the step of forming the protrusion is performed using a printing machine, and the printing plate of the printing machine defines the protrusion when the coating material is applied.   The manufacturing method according to claim 15, wherein the step of forming the punch score is performed using a punch.   The manufacturing method according to claim 15, wherein the step of forming the punch score is performed using a punch that is recessed to a thickness of about ½ of the first panel. The first panel is an adhesive panel;
The manufacturing method according to claim 11, wherein the second panel is a right panel.   The manufacturing method of Claim 18 including the step of making the front panel, the left panel, and the rear panel in the carton blank. (1) The step of bending the carton blank includes arranging the carton blank with the surface of the right panel facing up;
(2) bending the right panel and the left panel upward;
(3) folding the rear panel downward until it contacts the right panel;
(4) The adhesive panel is folded downward so that the surface of the adhesive panel is in contact with the surface of the right panel and the protrusions on the right panel match the punch scores on the adhesive panel. Steps,
(5) The manufacturing method according to claim 19, further comprising the step of attaching the surface of the adhesive panel to the surface of the right panel. Two dust flaps are made on each of the right panel and the left panel of the carton blank,
21. A method according to claim 20, comprising the step of making one lid flap made with one locking tab on each of the front panel and the rear panel. (6) bending the dust flap of the right panel toward the left panel;
(7) bending the dust flap of the left panel toward the right panel;
(8) folding the lid flap of the front panel toward the rear panel until it contacts the rear panel;
(9) folding the lid flap of the rear panel toward the front panel until it contacts the front panel;
(10) folding the locking tab of the lid flap of the front panel below the rear panel;
(11) The method according to claim 21, further comprising a step of bending the lock tab of the lid flap of the rear panel below the front panel.

Images