MXPA98009971A - Flexible polymer packaging bag with partially paral opening characteristics - Google Patents

Abstract

The present invention provides a flexible polymer packing bag containing disposable articles compressed there, and has a top wall with seal. A frangible line extends from a side wall to the top wall, and then to the opposite top wall, allowing the flange line to be torn to open the bag without having to tear the sel

Description

FLEXIBLE POLYMER PACKAGING BAG COM UMA PARTIALLY PARALLEL OPENING FEATURE Background of the Invention The present invention relates to flexible packaging bags for containing and distributing articles. More particularly, the present invention relates to a flexible packaging bag having a partially parallel opening feature that helps to easily open the bag to distribute the items from the bag.

Packaging bags composed of flexible polymer materials have been used to pack various types of items, such as infant diapers, child's underpants, absorbent pants, women's care products, and garments. for adult incontinence. These bags allow the packing of items to create a box-like appearance and a configuration that facilitates transportation and display on retail shelves. The bags may include handles to facilitate transport of the bags, and include mechanisms to provide an access opening in the bag.

For those bags made of a flexible polymer material, the opening mechanism can prove to be very difficult to operate manually, for example, for tearing easily opening with the hands, and particularly when it is near or intersects a seal formed of the material of polymer. Those seals are typically formed by ultrasonic bonding, heat bonding, or the like in order to melt the polymer materials together. These seals are relatively very hard and rigid in nature compared to unbound polymer material. In those cases where the opening mechanism is close to or intersects a seal, it can be very difficult, if not impossible, for some users to manually operate the opening mechanism.

There can be many reasons related to the problem of an opening mechanism and a seal. One of these reasons is that when manufacturing and packing, for example filling the bag with the articles requires that the articles be inserted in a particular direction or manner in order to provide a desired orientation of the articles in relation to the bag. Other reasons than when the articles are inserted through an opening in the bag to be sealed and sealed eventually to form an upper wall or a top panel and it is desired that the items be accessed and removed through the top wall or the top wall. Top panel, then the opening mechanism can be close or intercept with a seal that joins parts of the bag material in the formation of the wall or top panel.

Other problems occur if the size of the openings is very large. This may result in the bag no longer functioning as a means for desirably storing and transporting the articles. For example, if the opening is very large, the flexible polymer bag may begin to stick and lose its shape after a number of items have been removed.

Conversely, if the bag opening is very small, the articles may not be easily distributed through the opening due, in part, to the compressive forces exerted against the articles that keep them tightly packed together. Consequently, if only a small part of an item is available to the user, to grab and pull the bag through the opening, the user will have difficulty removing an item and in some cases may not be able to do so at all.

Synthesis of the Invention In response to the difficulties and problems discussed in the prior art, a flexible polymer packing bag having a partially parallel opening feature has been discovered.

In one form of the present invention, a packing bag is provided which includes a pair of side walls, a pair of end walls, a top wall, and a bottom wall. A seal is on the top wall and has opposite ends. A frangible line is on the top wall and runs around one end of the seal, so that the frangible line can be broken to form an opening in the packing bag without breaking the seal.

In another form of the present invention there is provided a packaging bag which includes a pair of side walls, a pair of end walls, an upper wall, and a lower wall. A seal is on the top wall and has opposite ends. A frangible line is on the top wall, and comprises the first parts that are on opposite sides of the seal and run around one end of the seal. The frangible line further includes the second parts ending in respective ones of the side walls.

In yet another form of the present invention there is provided a packaging bag which includes a pair of side walls, a pair of end walls, an upper wall and a lower wall. A pair of scutes are on the top wall, and a seal is on the top wall and has opposite ends. A frangible line includes a pair of first parts in the upper wall and extends into one of the gussets around one of the ends of the seal. The frangible line also includes a pair of second parts extending from the first parts and through the upper wall and up to the respective ones of the side walls.

Brief Description of the Drawings The above-mentioned and other features of the present invention and the manner of achieving them will be more apparent, and the invention itself will be better understood with reference to the following description of the invention, taken in conjunction with the accompanying drawings in which: Figure 1 illustrates a partially cut front view of an article having a graph thereon.

Figure 2 illustrates a front view of another article having a graph on it.

Figure 3 illustrates a perspective view of one form of the present invention.

Figure 4 illustrates a perspective view of a stack of articles.

Figure 5 illustrates a flexible packaging bag that has been opened to expose the interior space and the articles contained therein; Y Figure 6 illustrates a flat, empty flexible bag showing a frangible line.

Description of a Preferred Incorporation Figures 1 and 2 illustrate a disposable absorbent training brief for children, which is representative of the type of article to be packed in a desired orientation in relation to the packaging bag. The term "disposable" means that the training underpants are designed to be worn until they are soiled and then discarded, rather than washed and reused. Examples of other suitable disposable absorbent articles that can be used with the flexible packaging bag of the present invention include, but are not limited to, disposable absorbent briefs, diapers, women's care products, incontinence products. , to disposable clothing or similar. Hereinafter, when used with reference to a disposable training underpants by way of example, the term "component" can refer to, but is not limited to, all or a segment of a designated selected region, such as the edges, corners, sides or similar; the structural members such as the elastic strips, the absorbent pads, the elastic layers or panels, the layers of material or the like or a graphic. The term "graphic" may refer to, but is not limited to, an image, design, pattern, symbology, clues, or the like.

A disposable absorbent article, such as a training underpants illustrated in FIGS. 1 or 2, may have multiple function-related and / or appearance-related components. Examples of components that are related to appearance include but are not limited to graphs the emphasis or result of the leg and waist openings in order to make the conformation of a product more evident visible; the emphasis or highlighting of the article areas to simulate functional components such as elastic leg bands, elastic waistbands, simulated fly openings for boys, or ruffles for girls, highlighting product areas to change the appearance of product size; moisture indicators selectively placed; back labels or front labels; and written instructions selectively placed in a desired location of the article.

Examples of functional components include, but are not limited to, waist elastics, leg elastics, breathing areas, fluid repellent areas, fluid wetting areas, adhesives, coatings , encapsulated inks, chemically sensitive materials, environmentally sensitive materials, heat sensitive materials, moisture sensitive materials, perfumes, odor control agents, inks, fasteners, fluid storage areas, textured or etched areas, or the like.

Referring now to Figure 1, there is shown a disposable training underpants for boys 10 generally comprising a front panel 12, a back panel 14, a crotch panel 16 interconnecting the front and rear panels 12 and 14 and a pair of side panels elastic 18. Each elastic side panel 18 is formed of two separate elastic parts and are suitably joined together, such as by an ultrasonic joint, to form a non-clamped joined side seam 20. On the construction of the side seams 20, they are formed a waist opening 22 and the leg openings 24. The side seams 20 may be constructed to be manually ripped to allow the training underpants 10 to be manually disassembled by the caregiver, so that they can be easily removed from the child afterwards. of a bowel movement. A more detailed description of the construction and design of the training underpants 10 can be found in U.S. Patent No. 4,940,464, the contents of which are incorporated herein by reference. A specific way of supplying the elastic side panels 18 is described in U.S. Patent No. 5,224,405 and U.S. Patent No. 5,104,116, both of which are incorporated herein by reference. The provision of the side seams 20 can be achieved in a manner described in United States Patent No. 5,046,272 which is incorporated herein by reference.

The training underpants 10 further comprises a front waist elastic 26, suitably attached to the front panel 12, a rear waist elastic 28 suitably attached to the back panel 14, the leg elastics 30 suitably placed in the crotch panel 16, and a absorbent pad 32 positioned between an outer liquid impermeable cover or a lower sheet 34 and an upper sheet or liquid permeable cover 36. A graphic 38 is selectively positioned on the front panel 12, and as illustrated comprises a design of an aperture of 40 simulated fly, typical of underpants or male underwear, along with a rainbow, a sun, clouds and some cars. The graph 38 may be of any type of desired pattern, artistic feature or the like, and is placed in a selected location.

Figure 2 illustrates another training underpants 42 that can typically be worn by young lines. This training underpants 40 includes a graph 44 that is representative of the different types of appearance-related components that can be included in a disposable absorbent article. Figure 44 includes the simulated waist waves 46. The simulated leg waves 48, along with a rainbow, a sun, clouds, a car and a balloon. Again, any suitable graphics can be used to provide an aesthetic and / or functionally pleasing appearance to the user and the caregiver. Charts 38 and 44 may be designed to be particularly attractive to a child, and may help to positively encourage and reinforce the child's desire or interest in toilet training. This being the case, it is desirable to visually and accurately display the child caregiver, graphs 38 and 44 when the training underpants 10 and 42 are packed in their flexible packaging bag.

Referring primarily to Figure 3, there is illustrated a flexible packaging bag 50 having a polyhedral shape defining or forming a polyhedral enclosure. Specifically, the bag 50 has a hexahedral shape that forms or defines a hexedral enclosure having a bag length dimension 51, a bag width dimension 53 and a bag height dimension 55. The bag 50 is formed or defined by a pair of end walls 52, a pair of side walls 54, an upper wall 56 and a lower wall 58. Each of the walls has a periphery, such as the periphery 62 for an end wall 52. The walls 52, 54 , 56, 58 define an interior space 60 (Fig. 5) for containing a compressed stack 64 (Fig. 4) of articles, such as the training pants 10. The term "compressed articles" or similar terminology will mean that the stack of articles just as the training underpants 10 in Figure 4 are compressed inwardly by a compressive force on their front and back surfaces or panels, such as the front panel 12 and the rear panel 14, in one direction parallel to the direction of the stack 66 (figure 4), to decrease the length dimension 68 (figure 4) of the articles not originally compressed. The compressed stack 64 also includes a width dimension 70 and a height dimension 72. The term "compression packed" or a similar terminology describes the condition or condition of the training pants 10, after they have been compressed and have inserted into the bag 50. The term "expansion force" or a similar terminology refers to that force generally equal exerted by the compressed stack 64 in a generally opposite direction and parallel to the compression force and primarily against the end walls 52. Naturally, all the walls of the bag 50 experience some degree of tension.

Referring to Fig. 6, there is illustrated a packing bag 50 in an empty, flat condition before being formed into a polyhedral shape, just as described above. The empty and flat packing bag comprises the side walls 54, the longitudinal side edges 57, the bottom edges 59 and the top edges 61. Both bottom edges 59 and the top edges 61 are formed by the pair of side walls 54. By means of the separating the side walls 54 at the upper edges 61, the side walls 54 are also spaced apart and form the end walls 52, as illustrated in Figure 3. Next, the side walls 54 and the end walls 52 are bent inwardly so as to form the gussets 100 (FIG. 3) in a manner that is well known in the art of designing and manufacturing flexible packaging bags. This bending of the end walls 52 and the side walls 54 also results in the formation of the top wall 56. The top edges 61 are then joined together to form a seal (Figure 3) after the compressed stack of article 64 (figure 4) has been inserted into the bag 50, and in which the stamp 104 comprises the opposite ends 103 and 105. The term "join" when used to describe the relationship between the two or more elements means that the elements they may be connected together in any suitable manner, such as by ultrasonic bonding, heat bonding, adhesive bonding or the like; the elements can be joined directly together and can have one or more elements interposed between them, all of which are connected together. If desired, the lower wall 58 may be formed in the same manner or in a different manner from the upper wall 56. In any case, the formation of the gussets 100 of the end walls 52 and the side walls 54 so as to forming the top wall 56 is well known in the art of designing and manufacturing flexible polymer packaging bags.The bag 50 may be composed of different materials, or may be composed of essentially the same type of material. Typically, the material is a polymer film, which is flexible enough to assume a generally desired hexahedral shape when the bag 50 is filled with the training underpants 10. In addition, the material must have sufficient strength to hold and contain the underpants of training 10, or other articles, without breaking and without bulking or excessively stretching the film material. In a specific embodiment, the film material may be composed of a polyethylene film or a film laminate having a thickness of about 2.25 mils. Other examples include a LDPE film (low density polyethylene), a laminate of low density polyethylene film / linear low density polyethylene (LLDPE), a laminate of low density polyethylene film / medium density polyethylene (LDPE), a laminate of low density polyethylene / high density polyethylene (HDPE) or the like. A desired range of thickness is between about 1.5 mils to about 3.0 mils. A more desired range of thickness is between about 1.75 mils to about 2.5 mils. Naturally, the dimensions of the bag 50 will depend on the types of articles to be contained therein as well as the desired or aesthetically preferred shape. A suitable bag is a construction method, is illustrated and described in U.S. Patent No. 5,282,687, the contents of which are incorporated herein by reference.

Continuing with reference to Figures 3 and 6, the bag 50 also includes a mechanism or means for accessing the interior space 60 (Figure 5) to distribute the training underpants 10 therefrom. The mechanism to the means for access may be a frangible line 74 that is easily broken. With reference to Figure 6, which illustrates a packing bag in a flat, empty condition before being packed with the training underpants 10, a frangible line 74 is manufactured in the bag as illustrated. The frangible line 74 also continues or runs in an identical manner on the opposite side wall 54. In the specific feature of the present invention illustrated in Figure 6, the frangible line 74 includes a pair of first parts 73 and 75 (FIGS. and 6) and a pair of second parts 77 and 79 (figures 3 and 6). The first parts 73 and 75 are essentially parallel to one another, and in the bag 50 illustrated in Figure 3 they are also essentially parallel to the seal 104. The second parts 77 and 79, with reference to Figure 6, extend downwards from the first respective parts 73 and 75.

With regard to the specific feature described above with reference to Figures 3 and 6, the present invention contemplates the frangible line 74 having other designs, patterns or shapes. For example, portions of frangible line 74 may be linear or curvilinear, and may be discontinued if desired. Therefore, the present invention is not limited to that frangible line 74 described with reference to Figures 3 and 6.

As illustrated in Figure 3, the frangible line 74 is partially located in a side wall 54, continues upwards and through a portion of the top wall 56, and then runs essentially parallel to the seal 104 in an opposite direction from the window 88. The frangible line 74 continues inward of the escutcheon 100 and emerges in the upper wall 56 on the opposite side of the seal 104, and then in a similar manner continuous through the upper wall 56 and up to the opposite side wall 54 from the side wall 54 visible in Figure 4.

Therefore, as illustrated in Figure 3, the frangible line 74 comprises a pair of first portions 73 and 75 in the upper wall 56 which are on opposite sides of the seal 104. The first or parallel portions 73 and 75 extend into one of the gussets 100 and around the end 105 of the seal 104. The second or corner portions 77 and 79 of the frangible line 74 extend from the respective first or parallel portions 73 and 75 through the upper wall 56 and up to the respective side walls 54. The frangible line 74 terminates in each side wall 54 so as not to run or extend into an end wall 52. The frangible line 74 may. , for example, provided by partially cutting or otherwise slimming through the thickness of the bag material in a predetermined pattern, providing a selected pattern of perforations along the desired sections or the walls of the bag, providing a desired pattern of stress-fatigue weakening along a desired line of the bag or the like. As illustrated, the frangible line is provided by a line of perforations in which there can be approximately 2-10 perforations by 2.54 linear centimeters. Both the manufacture and packaging of the bag 50, and the provision of a frangible line 74, can be achieved in any suitable manner known in the art.

In a particular aspect of the present invention, two essentially parallel portions 73 and 75 of the frangible line 74 run essentially parallel to the seal 104 for a distance of about 30 percent to about 70 percent of the length dimension of the bag 51. Thereafter, the frangible line 74 passes angularly or extends through the upper wall 56 at an angle of about 30 degrees to about 90 degrees relative to the seal 104, and then downwardly into both walls 54 for a distance of between about 40 percent to about 60 percent of the height dimension of the bag 55. The frangible line 74 terminates near the end wall 52 at a distance of about 10 percent of the dimension 51. The distance between the frangible line 74 or extends to the side walls 54 is measured in the vertical direction or up and down as seen in figure 3. Similarly, the distance The extent to which that frangible line 74 terminates near the end wall 52 is measured in a horizontal direction or from left to right as seen in Figure 3. Within these distances, the frangible line may be linear or curvilinear.

Referring now primarily to Figure 4, in each training underpants 10 has been folded so that the elastic side panels 18 (Figure 1) are placed inwardly between the front panel 12 and the back panel 14.

As illustrated in Figure 4, each training underpants 10 generally define the opposite side edges 78, a lower edge 80, an upper edge 82, the opposing face surfaces 84 (only one of which is illustrated in Figure 4) , and a periphery 86. When the underpants are packed with compression into the bag 50, the lower edges 80 (as seen in Figure 4) of the training underpants 10 make contact with the bottom wall 58, the upper edges 82 of the training pants 10 make contact with the upper wall 56, the side edges 78 of the training pants 10 make contact with the side walls of the bag 54, and the outermost face surface 84 of the end training pants 10. makes contact with the end walls 52. Note that the upper edge of the training underpants 10 in Figure 4 is associated with the waist opening 22 (Figure 1).

Referring primarily to Figure 3, the bag 50 further includes a window 88 positioned or disposed within a portion of the end wall 52. The window 88 includes a window periphery 90 having a shape that is essentially similar to the periphery of the window. the end wall 52. The window 88 at least essentially frames a component of the training underpants 10 contained within the bag 50. In Figure 3, the component framed by the window 88 is a part or segment of the graphic 38, which is visually perceived through the window 88. The training pants 10 may also have another graphic on the rear panel 14, and in this case, it may be desirable that the graphic on the rear panel 14 be visually perceivable. through the opposite end wall 52 from the end wall 52 having the window 88 framing the graph 38. In this case, the opposite end wall, for example, that wall of end not visible in figure 3, will also have a window.

Depending on the type of articles to be contained in the bag 50, and the components of those items, it may be desirable to have a window on a different wall of the end walls 52. For example, in case it is packaged in a stack of items in a different orientation in the bag 50, then one of the side walls 54, or the top wall 56 or the bottom wall 58, may have a window to allow a component to be visually perceived therethrough.

In either case, the desire to have a graph 38 visually perceived through the window 88 and in a desired orientation in relation to the bag 50 is just an example of an article that needs to be packed in a bag in a desired orientation.

Referring to the window 88 framing a component, such as a graph 38, the term "framing" or "essentially framing" or variations thereof, means that the window periphery surrounds or encompasses all or at least a portion of the component for the visual display. Within this context of this description, a component is visually perceived if it is clear or essentially clear to the person who sees it. The term "clear" refers to the ability of the material to transmit light, so that the component, or part thereof, can be seen as clearly as if there were no material in between the component and the individual. For example, a material is "clear", "essentially clear" or similar when light passes easily through it, so that printed or written signs, graphs or the like located opposite the clear material or can be seen by the eye without help. The material will generally be considered to be "clear" and "essentially clear" or the like when it has a light transmission greater than about 50 percent, desirably greater than about 80 percent, or more desirably more than about 90 percent. percent. The transmission of light from a material can be properly determined by a BYK Gardener as established in ASTM-D 2244-85.

A potential problem with arranging the bags 50 on a shelf for retail purposes is that it may not be practical to orient the bags 50 so that the windows 88 are visible. In this case, for example, the bags 50 can be oriented on the shelf space so that one of the side walls 54 is visible. To overcome this problem, and in order to draw the tension to the end wall 52 and the window 88, a visual suggestion 96 (Figure 3) is positioned or arranged on at least one of the side walls 54 of the bag 50. visual suggestion 56 may be clear or an essentially clear part of a wall, and as illustrated in Figure 3, has the form of an example beam, of a light beam. It should be noted that for purposes of explanation and clarity, the visual suggestion 96 does not show the side edges 58 (FIG. 4) of the individual training pants 10 contained therein. One purpose of the visual suggestion 96 is to draw a user's attention to the end wall 52 so that a component such as a graphic 38 of an article, such as a training underpants 10, can be visually perceived. The visual suggestion 96 can also serve as an indicator or gauge of the remaining product, so that a caregiver can easily determine the number of underpants 10 that are still in the bag 50.

The visual suggestion 96 may or may not be continuous with the window 88. In other words, as illustrated in Figure 3, the visual suggestion and the window 88 form a closed circuit pattern or periphery.

However, it may be desirable for manufacturing, printing or packaging purposes to have a visual suggestion 96 and window 88 provided as separate areas of visibility. In the latter case, the visual suggestion 96 still serves to draw attention to the window 88 and the graphic 38. Thus, the visual suggestion 96 is visually associated with the window 88 to draw the attention of the buyer, the user or the like to the window 88 and the graphic 38. The visual suggestion 96 may be provided in the material from which the bag 50 is made in any suitable manner known in the art. Even when the visual suggestion 96 has been described as clear, or essentially clear, a part of a wall may be a structure separate from a wall, and not require to be clearly or essentially clear. Again, a purpose of the visual suggestion 96 is to draw the attention of a user or another individual to the window 88. Therefore, depending on the design, configuration and the like of a bag 50, the visual suggestion 96 can be provided with any design, desired configuration and the like appropriate to its purpose.

Continuing the primary reference to Figure 3, the bag 50 may further include an accessory window 98 in the upper wall 56. The accessory window 98 allows at least a portion of the contents there, such as the training underpants. be perceived visually. Accessory window 98 can be placed or fabricated on any of the walls of bag 50, but it is desired that it be on top wall 56 so that the user can determine the number of training underpants 10 that remain in the bag 50. As with window 88, accessory window 98 may be either clear or essentially clear.

With primary reference to Figures 3 and 5, the bag 50 is opened by breaking the frangible line 74 to gain access through the opening 74 to the training underpants 10. Typically, the separation of a frangible line 74 is initiated by breaking a part thereof, and then propagating the breaking or tearing along the frangible line in the side walls 54, through the top wall 56 and then essentially in parallel along the seal 104. By means of breaking the frangible line 74, the user can insert a finger or thumb through the opening 76 in order to gain access to the training underpants 10. Thereafter, the user can grab the upper part of a training underpants 10 and pull it easily out of the bag 50, while the remaining training underpants 10 are held within the confines of the interior space 60. Thus, the frangible line 74 provides an opening 76 allowing easy removal of a training underpants 10, and an aid in keeping the rest of the training underpants 10 in the bag 50 while also maintaining the overall shape of the bag 50.

Although the invention has been described as having a preferred embodiment, it will be understood that it is capable of further modifications. It is therefore intended that it cover any variations, equivalents, uses or adaptations of the invention following the general principles thereof and including such items of the present description as they come or may come within the known or customary practice in the art, which the invention belongs and falls within the limits of the appended claims.

Claims (17)

R E I V I ND I CA C I O N S

1. A packing bag comprising: a pair of side walls, a pair of end walls, an upper wall, a lower wall, a pair of gussets in said top wall, a seal in said top wall, and having the opposite ends, and a frangible line comprising a pair of first parts in said top wall on opposite sides of the seal and extending into one of the gussets and around one said end of said seal, said frangible line further comprises a pair of second parts extending from respective ones of said first parts through said top wall and inside the respective ones of said side walls, whereby the frangible line can be broken to form an opening without tear said seal.

2. The bag as claimed in clause 1, characterized in that said first parts of said frangible line are essentially parallel to said seal.

3. The bag as claimed in clause 2, characterized in that said second parts extend from said first parts in said top wall at the respective angles between about 30 degrees to about 90 degrees in relation to said seal.

4. The bag as claimed in clause 3, characterized in that said second parts extend inside the respective side walls at a distance of between about 40 percent to about 60 percent of the bag height dimension .

5. A packing bag comprising: a pair of side walls, a pair of end walls, an upper wall and a lower wall, a seal on said top wall, and having the opposite ends, and a frangible line on said top wall, said frangible line comprises the first parts thereof on the opposite sides of said seal and continuing around one said end of said seal, said frangible line further comprising the second parts ending with respect to one of said side walls, by what said frangible line can be torn to form an opening without tearing said seal.

6. The bag as claimed in clause 5, characterized in that said second part extends from said first parts in said top wall at the respective angles between about 30 degrees to about 90 degrees in relation to said seal.

7. The bag as claimed in clause 6, characterized in that said second parts extend into the respective side walls by the distance of between about 40% to about 60% of the height dimension of the bag.

8. The bag as claimed in clause 7, characterized in that said first parts of said flange line are essentially parallel to said seal.

9. The bag as claimed in clause 8, characterized in that it comprises a pair of gussets in said upper wall, said first parts of said flange line extending inside one of said gussets.

10. A packing bag comprising: a pair of side walls, a pair of end walls, a top wall, and a bottom wall, a seal on said top wall, said seal having opposite ends, and a line flangeable in said top wall, and continuing around one said end of said seal, whereby the flange line can be torn to form an opening in said packing bag without tearing said seal.

11. The bag as claimed in clause 10, characterized in that said flange line comprises a pair of first parts in said top wall and being on opposite sides of said seal.

12. The bag as claimed in clause 11, characterized in that said flange line further comprises a pair of second parts extending from respective ones of the first parts and through said top wall.

13. The bag as claimed in clause 12, characterized in that said second parts also extend into respective ones of said side walls.

14. The bag as claimed in clause 13, characterized in that said first parts of said flange line are essentially parallel to said seal.

15. The bag as claimed in clause 13, characterized in that said second parts of said flange line extend from said first parts through said top wall at respective angles between about 30 ° to about 90 ° in relation to said seal.

16. The bag as claimed in clause 13, characterized in that said second parts extend into said side walls at a distance of between about 40 percent to about 60 percent of the height dimension of the bag.

17. The bag as claimed in clause 13, characterized in that it further comprises a pair of gussets in said top wall, and wherein said first portions of said flange line extend into one of said gussets. SUMMARY The present invention provides a flexible polymer packing bag containing disposable articles compressed there, and has an upper wall with a seal. A frangible line extends from a side wall to the top wall, along the seal, around the end of the seal, back inside the top wall, and then to the opposite side wall, thereby allowing the line to be flanged. Tear in order to open the bag without having to tear the seal.