ES2200869T3 - PACKAGE TO DISPENSE SHEETS. - Google Patents

Abstract

A flexible package (10) for containing and dispensing sheet products (16), such as facial tissues, premoistened wet wipes, and the like is disclosed. The package comprises a single, unitary piece of polymer film formed to define a pocket having a back face, a front face, two opposing longitudinal edges formed by a fold. Two sealed regions (32) are disposed near two opposing side edges (28), and a flexible flap (30) is hingedly rotatable from a first closed position generally about one of the longitudinal edges, the flap covering at least a portion of the front face when in the first position. The flap has a transverse centerline and at least one line of weakness (34) disposed on either side of the centerline inboard of the side edges, the lines of weakness allowing a portion of the flap to be frangibly fixed in the first position. A method of forming the package of the present invention is also disclosed.

Description

Packaging to dispense sheets.

Field of the Invention

The present invention relates to packages for contain and dispense sheet products. In particular, the The present invention relates to flexible packages for dispensing tissue products, such as facial tissues.

Background of the invention

Disposable rinsing items are fine known in the art. For example, fibrous structures Cellulosics, such as paper bands, are an article form for disposable wiping. Such paper bands can be used like facial tissues, toilet tissue, paper towels and napkins, being generalized the use of each one of them at present. Frequently, consumers wear tissues when they leave home or they have them in different places within it. Many times the tissue is used for personal cleaning tasks, such as care of the nose. Often the tissue is used for cleaning children, small spills, dirty surfaces or for other tasks of personal hygiene, for example, to wipe the face, hands or for use in the toilet

Other types of disposable items to rinse, frequently used by consumers, are the wipes pre-moistened The items to rinse pre-moistened typically have a substrate that includes one or more materials or layers, for example materials not tissues. The substrate may be pre-moistened with a wetting agent before use, or alternatively, may be combined with a liquid at the time of use of the Article. The items to rinse pre-moistened are also called "wipes wet "and" wipes. "Often, users often Bring wet wipes with you when you leave home, and use them for different personal cleaning tasks.

Wiper packs have been developed that they allow consumers to carry small amounts of same, for example 10-12 sheets. In general, the containers of this class are made to fit the pockets of consumers and include a flexible plastic wrap with a perforated weakening line, to form an opening of dispensing The packages may also have a flap member separate, designed to cover the dispensing opening when they are not in use, to prevent the contact of the wipes with the dust, moisture and other elements. Plastic wrap moisture impermeable and a closing flap, or other means of enclosure, are especially important for wipes pre-moistened

Many containers for dispensing sheets of wipes, such as tissue or wipes pre-moistened, have been developed to allow consumers to carry wipes comfortably in their pockets, bags or cars. For example the patent US 4,131,195, issued on December 26, 1978 to Worrell, Mr., describes a disposable container, impervious to moisture and with the ability to be compacted, to dispense a battery of pre-moistened sheets. However, the container described in this document requires the cutting and gluing of parts separated from material to form each container.

Re-sealable packages with an adhesive closure member are also known. For example, U.S. Patent No. 5,725,311, issued March 10, 1998 to Ponsi et al. , describes a re-closable container with a label that is applied over an opening of the container. Such packages come in many and varied configurations and designs, but all involve, in general, the use of relatively rigid labels, adhesive labels or other re-sealable adhesive means.

Hard plastic covers have been developed, that is, rigid, to contain wipes, but they are, in general, more bulky and less suitable for the user to carry I get, for example in a pocket.

Current methods to form a container for dispensing wipes involve cutting and pasting many parts, such as a front face, a back face and labels Adhesives of any kind. If a flap is used to cover a dispensing opening, the flap must be cut and pasted into a separate process, leading to an increase in complexity and manufacturing cost

Consequently, it would be desirable to have a container to dispense wipes that were relatively inexpensive from manufacture.

In addition, it would be desirable to have a suitable container to dispense dry tissue or wipes pre-moistened, with a flap member for cover a dispensing opening, the container being relatively economical to manufacture.

Compendium of the invention

A flexible container for containing and describing is described. Dispense sheet products, such as facial tissues, pre-moistened wipes and the like. The container It comprises a single and single piece of polymer film formed to define a bag with a back face, a face front and two opposite longitudinal edges, formed by bent. There are two closed areas arranged next to two edges opposite sides and a flexible flap that can rotate articulately, from a first closed position, generally around one of the longitudinal edges, covering the flap, at least a part of the front face when in the first position. The flap has opposite side edges, substantially coinciding with the closed and welded areas to they. The flap has a transverse geometric axis, and at least a weakening line arranged on each side of the axis geometric, inside the lateral edges, allowing the weakening lines that a part of the flap is fixed of frangible mode in the first position.

The flexible package preferably comprises a heat-weldable polymer, for example, polyethylene. An opening of dispensing, for example on the front face of the part of bag, allows dispensing of individual sheets of the stack of  sheet products.

A method for forming the container of the present invention. The steps of the method include provide a flexible and substantially polymer sheet rectangular, of adequate size, the sheet having opposite sides first and second that define a first dimension, and sides third and fourth opposites, which define a second dimension. There is two weakening lines formed, generally extending, each of them, in orthogonal direction from the first side and to the second side. A stack of products is placed in sheets on the polymer sheet, the products being arranged in sheets substantially centered in relation to the short sides first and second. A first part of the polymer sheet is folded, of so that the fourth side is arranged approximately in parallel with the third side and about a third of the length with respect to the third side, thereby forming a stock zone containing the stack of sheet products. It bends a second part of the polymer sheet, so that the third side is arranged approximately parallel to the fourth side, to form a  container folded in three parts, with opposite side edges first and second. Then it joins, next to the edges opposite sides first and second, a part of the sheet of polymer folded in three parts.

Brief description of the drawings

Figure 1 is a plan view of a container of the present invention.

Figure 2 is a cross-sectional view. of the container shown in figure 1.

Figures 3 and 3A are sectional views. cross section of an alternative container configuration shown in Figure 1

Figures 4 and 4A are sectional views. cross section of an alternative container configuration shown in Figure 1

Figure 5 is an isometric view of a container of the present invention showing the flap in one position open

Figure 6 is an isometric view of another embodiment of a container of the present invention showing the flap in an open position.

Figures 7A-7E are schematic illustrations of a polymer sheet in several stages of forming a container of the present invention.

Detailed description of the invention

Although the following description describes the package of the present invention primarily in relation to facial tissues, it should be understood that the package is not limited to the dispensing of such materials. The present container invention can be useful for packaging any material that can be dispensed in individual sheets, such as tissue Bathroom, napkins or paper towels. In particular, the packaging of the present invention may be useful for containing and dispensing pre-moistened wipes, sometimes referred to as wet wipes or wipes.

As used herein, "sheet" or "sheet product" refers to the products to be contained and dispense for the package of the present invention. The terms they can refer, for example, to tissues or wipes pre-moistened

As used herein, the term "tissue" refers to a dry cellulosic substrate, preferably a substrate with sufficient softness and absorbency to be used as facial tissue, bath tissue, napkin or Like paper towel As a non-limiting example, there is a tissue, marketed by The Procter & Gamble Co. as facial tissues PUFFS®, which can be used to be dispensed through the container of the present invention.

As used herein, the term "wipe" refers to a wipe pre-moistened impregnated with solutions or lotions appropriate cleaning. For example, the wipe can be a wipe for children, a wipe for adults, a wipe for hard surface cleaning, etc. The intended use of the wipe, However, it does not limit the final product. As an example, no limiting, a preferred wipe for dispensing by Container of the present invention is marketed by The Procter & Gamble Co. as PAMPERS® children's wipes.

A package according to the invention is shown in general with 10 in the figures of the drawings. The container can be relatively rigid, but, more preferably, it is relatively flexible, to allow comfortable transport in a pocket user. Thus, the description of this report is addressed, mainly, to flexible embodiments of the present invention, But it is not limited to them. In fact, the principles of operation and advantages can also be realized in more rigid executions.

As shown in figures 1 and 2, the container 10 includes a flexible container body 12 formed from a single piece of flexible film, such as a polymer film. The body 12 forms an internal space or bag 14 to house the sheet content 16 of container 10. Bag 14 has a face front 18 and a rear face 20. The sheets 16 are, preferably, a series of discrete, folded and stacked, such as tissue or wipes. In one embodiment preferred, sheets 16 are PUFFS® facial tissues, folded in C and stacked.

The container 10 preferably has a generally rectangular configuration, as can be seen in the Figure 1. The container 10 has two opposite longitudinal sides 22 and 24, each formed by folding the flexible film. I know they form two opposite ends or side edges 26 and 28 by welding the front face 22, rear face 24 and flap 30 in the zones 32 closed. The closed areas 32 are preferably waterproof to moisture, and can be formed by methods known in the technique, such as by applying adhesives sensitive to pressure, hot melt adhesives, fusion bonding or bonding by ultrasound. In a preferred embodiment, body 12 of container is formed from a heat-weldable material, such as polyethylene. Thus, the closed zone 32 can be formed by application of heat and pressure, such as by using bars or hot rollers or other hot pressure surfaces.

The flap 30 is flexible and can be rotated articulated from a first position, as shown in the Figure 2, in which it covers a part of the front face 18 of the bag 14. In a preferred embodiment, the flap 30 covers substantially the entire front face 18. The flap 30 can be usually rotated around the area that forms the side longitudinal 22 of the body fold 12. When formed according to the method of the present invention, the flap 30 is fixed frangibly in a first closed initial position, as shown in figures 1 and 2. Lines of weakening 34, such as the perforated lines shown in the Figure 1, so that the flap 30 can be brought to a position open breaking through the weakening lines, as shown in figure 5.

The weakening lines 34 can be formed by scratching, perforating or otherwise creating a line of preferred tear in the flexible film of the container 10 of the present invention In general, a line of weakening on each side of a transverse geometric axis 36, the weakening lines being inside the edges lateral 26 and 28, and inside the closed areas 32. Although the weakening lines are shown in linear figure 1 and generally parallel to the side edges 26 and 28, it is not They need to be like that. The weakening lines may be no linear, and, in general, can form an angle in relation to the lateral edges 26 and 28. For example, the weakening lines they can form an angle, so that when they open, the part flap open 30 have substantially configuration trapezoidal Alternatively, weakening lines can be nonlinear, so that the flap, when opened, adopts the Shape of a semicircle.

The weakening lines 34 can extend from the distal edge 31 of the flap 30 at any distance sufficient to provide access to the dispensing opening, as described in more detail below. In one embodiment preferred, the weakening lines 34 extend substantially to the longitudinal side 22. In one embodiment, there are means 36 of stress relief provided to prevent further unwanted weakening of the flap 30, beyond what necessary to dispense sheets 16. For example, they can be formed holes or openings 36, as shown in figure 1, in the proximal end of the weakening lines.

When it closes again, the flap 30 can be retained in a first and closed position by any means suitable, as is known in the art. For example, it can be permanently fixed a tape tab 38 on the flap 30, as shown in figures 1 and 2, applying an adhesive re-closable to the tongue tongue portion 38 of tape which comes in contact with the front face 18 of the bag 14. Other means of re-enclosure include the placement of suitable adhesives on the side of the flap facing the bag, as shown in the adhesive zone 40 of Figure 5. Alternatively, the adhesive zone 40 may be arranged in the side of the front face 18 of the bag 14 facing the flap. The adhesive zone 40 can be arranged on the flap 30 or on the face 18 front in any desired size or shape. For example, adhesive can be disposed on the flap generally along the distal edge (as shown in figure 5), or along the Distal edge and sides of the flap. The more adhesive it is apply, the greater the protection against the elements when the container flap is closed. However, it is also important that the flap can open easily, so it can apply a combination of suitable type of adhesive, quantity and location of the same, which allows to achieve the desired balance between protection against the elements and ease of opening.

A feature of the package of the present invention is the dispensing opening 42, through which the individual sheets are dispensed, or removed by the user, after the flap 30 was opened. In the simplest embodiment, such as shown in figure 2, the dispensing opening 42 is formed, simply, not closing the edge 44 of the polymer sheet together to the fold of the longitudinal side 22. The user opens the flap grabbing it next to distal end 31 and lifting it up. Once the flap is open, the user simply accesses the opening 42 next to the proximal part of the flap and remove the sheet or desired sheets.

In another embodiment, like the one in the section cross section of figure 4, the opening 42 is formed by a slit or forming a line of weakening that the user It can easily turn into a slit. For example, the user  can break and open through the perforated line of weakening 46 shown in Figure 5, to form the slit opening 42. In another embodiment, the opening 42 may be configured in oval, circular or other desired shape, as shown in the Figure 6. In general, the dispensing opening 42 may have any configuration and size, depending on the sheets to dispense. For dry tissues, it is better to arrange the opening generally oval shown in figure 6. For wipes wet, it is better to have a generally small opening, such like the slit that is formed by breaking the perforations frangibles shown in figure 5.

Another alternative embodiment of the packaging of the The present invention is shown in Figure 6. The package shown in Figure 6 has a dispensing opening 42 in general oval, as discussed above. The opening of dispensing is formed by making a line of weakening, frangible, configured as the opening, as in the Oval configuration shown. A method to form the line of Weakening is making perforations. The adhesive zone 40 can be arranged to cover essentially the entire surface of the flap, as shown, and in particular, to cover the entire area of the opening and the area immediately surrounding the opening of dispensing 42. When opened, part 48 of the front face 18, removed to form the opening 42, remains adhered to the flap 30. After that, the flap can be closed again and open when desired, helping part 46 to prevent careless, the flap adhesive adheres to the contents of sheets arranged in bag 14. Alternatively, the adhesive It can only be applied in the area corresponding to the opening, so that when it opens, part 48 of the front face 18, removed to form opening 42, remain attached to the flap 30, as before, but no adhesive exposed outside the area covered by part 48.

If the dispensing opening is formed in the front face 18, it is generally desirable to adhere the edge 44 of the polymer sheet to the fold of the longitudinal side 22, or together to the. For example, before folding the flap and arranging it in the first and closed position during manufacturing, and therefore before closing the closed areas 32, the closure 50 can be formed of the longitudinal edge, thereby welding the edge 44 to flexible polymer material of the container. The union can be done by any method known in the art, such as by adhesive or ultrasonic welding, but it is preferable heat welding by application of heat and pressure, to form a 50 welded edge closure. An alternative closure 50 of longitudinal edge is formed by also welding the proximal edge 52 of the flap 30 during the closing process, as shown in the figure 3A. As before, the union can be made by any known method, such as by adhesive, heat, pressure or a combination thereof.

Another way of adhering the edge 44 of the sheet of polymer in the fold of the longitudinal side 22, or next to it, is depicted in figures 4 and 4A. In this configuration, the edge 44 bends over itself, forming an edge crease 54. How before, the edge closure 50 can be carried out by any method known, such as by adhesive, heat, pressure or a combination of them. A longitudinal edge closure 50 alternative is formed by welding, in addition, the proximal edge 52 of the flap 30 during the closing process, as shown in the figure 4A.

The body 12 is preferably formed from of a flexible and moisture impermeable film material, such Like a polymer film. In a preferred embodiment, the film materials comprise polymeric materials heat sealable such as polyethylene. In one embodiment it was used the EX-702 version of LDPE / LLDPE, provided by Exxon Chemicals, in the range between 25 and 100 microns. The thickness of material is not critical, but the film must be thick enough to be durable, flexible, and relatively soft to Touch when used. If an adhesive is used to carry out the flap closure, the material must be compatible with suitable re-closing adhesives.

The package of the present invention can be handmade or can be done by adapting packaging equipment suitable such as "continuous wrap" equipment, used usually to apply plastic wrap packaging. The necessary steps to manufacture the package are essentially the same whether done by hand or by machine, and described below with reference to the figures 7A-7E.

A flexible film material 60 is provided suitable in a substantially flat configuration. The material 60 can be substantially rectangular, with long sides opposite first and second 62 and 64, and opposite short sides first and second 66 and 68. The long sides define the width W. The two short sides define the length L. It can be considered that the material 60 is divided into substantially equal thirds, by example two outer zones 70 and 74 and an inner zone 72. Although the term "third" is used in this document, the term is not limited to a literal third, that is, 1/3. However, in general, the material is considered advantageously to have three zones, which they can be substantially equal thirds, all three being parts delimited by imaginary lines 80 and 81, as shown in figure 7A.

Any lines of weakening of the material while in a configuration generally flat. For example, as shown in Figure 7 B, weakening lines 34 of flap can be formed in one third outside, and extend at least to the first short side 66. Similarly, weakening lines 76 of dispensing, for example oval, as shown in the figure 7B, while the material is in a configuration generally flat.

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After placing the content stack of sheets 16 on the material, generally in the third zone 72, interior, of material 60, with the dispensing opening arranged in the outer third 74, it is folded as indicated by arrow 76, so that the second short side 68 is juxtapose on the imaginary line that divides the outer third 70 and the inner third 72, or next to it. As can be seen by attentive comparison of the figures in the drawings, according to described in these steps of the method, the second short side 68 corresponds to the edge 44, as shown in figure 2, by example. Also, this bending step forms the crease on the side longitudinal 22 of the container 10, as shown, also, in the Figure 2. This bending step, therefore, is the first step in the formation of the bag 14, and the outer third 74 becomes on the front face 18 of the bag 14, while the third interior 72 becomes the rear face 20 of the bag 14.

If desired, the edge 44 can be folded and / or join at this time to form the edge closure 50, as has detailed above with reference to the figures 3-4A. If bonding with adhesive, a step is necessary Additional to apply. Also, if necessary, they can carry out additional steps of bending, heating and Pressure.

Next, the outer third 70, with the weakening lines 34 of flap, bends as indicated by arrow 78 in figure 7D. Again how can be appreciated by carefully comparing the figures of the drawings, as described in these steps of the method, the first side short 66 corresponds to the distal edge 31 of flap, as shown in figure 1, for example. Also, this step of folded form the fold in the longitudinal side 24 of the container 10, as shown in figure 2. This bending step, therefore, is the First step in the formation of the flap 30.

After folding both outer thirds, as described above, the package appears almost as shown in figure 1, which can be described as "folded in three parts ", and side edges 26 and 28 are formed. As a step end required, a closing / joining operation is carried out to forming the closed areas 32. In a preferred embodiment, they form closed areas by applying heat and pressure to Merge the component layers of film material. This can be achieved by application of a hot wheel rolled to through the area to be closed, or by a hot rod, by example a hot anvil, which is pressed in situ in the area to close.

Other variations can be made in the steps of method, or add more steps to the method, if desired. For example, yes a tape tab is desired, such as the tongue 38 shown in Figure 1 can be added at an appropriate stage of the process to make the container 10. Likewise, it may be desirable to make the fold of the step shown in figures 7D or 7E before placing the sheet content 16.

A continuous process that uses a band continuous of rolled material 60 and equipment adapted to wrap in continuous it can be used to carry out a procedure of viable manufacturing from the commercial point of view. In a process continuous, the material 60 can be unwound in the direction of the machine, as indicated by the arrow MD in the figures 7A-7E, so that the bandwidth continues correspond to the length of discrete material 60 shown in the Figure 7A, for example. In a preferred process, lines of weakening 34 and 76, for example, in a separate step before roll the continuous web of material 60. If a printed polymer film, the lines of weakening so that they match the print design. In the process, each step can be arranged so that also coincides with the weakening lines and / or the design of impression.

The process steps are essentially the themselves, gradually making the necessary folds, for example, with properly designed folding tabs. After of the edge closing step, described with reference to the figure 7E, a final cutting step can be carried out to produce individual packages 10 from the continuous web of material 60

The final container can have the dimensions necessary, but in a preferred embodiment, the container of the The present invention is intended to be carried in a pocket or handbag. In a currently preferred embodiment, the dimensions are such that they can be used as sheet content 16, in a stack of C-folded sheets, PUFFS® facial tissues, marketed today. That way, the dimensions of a presently preferred embodiment, for a stack of approximately 10 tissues, are approximately 12 cm, on the side short, about 23 cm on the long side, and about 2 cm thick, uncompressed.

The advantages of the method of the present invention, and of the container produced in this way, are evident from the Description of this report. In particular, the method and the container They require only a simple piece of flexible film. It is feasible, but not necessary, cut and join a separate flap member, by example. In addition, when it is formed and before the first use, the flap is fixed in a first closed position, protecting from that way the content of sheets of dust, moisture or other environmental pollutants before use. After the First use, the flap completely covers the opening of dispensing, thereby providing additional protection to the content of sheets against the elements. The process does not waste material. No unnecessary die cutting is required, and it is not necessary  remove material from the starting material, for example the material 60. Using manufacturing equipment for continuous wrapping commercially available, the package of the present invention can be, in this way, mass produced economically and Respectful with the environment.

When produced by the method of this invention, many variations are possible, without leaving the scope of the present invention. For example, as shown in the figure 8, the weakening line 46, which defines the part of the dispensing opening, can be non-linear, forming another member secondary flap 84. A secondary flap member of this class can be very beneficial when wipes are dispensed pre-moistened When closed, the width effective dispensing opening is minimal due to the minimum groove width. In use, however, the user you can simply lift the flap, thereby forming a larger opening to dispense the wipe. After removing the wipe, the secondary opening flap can be returned to the closed position, thereby helping to prevent the loss of moisture content of wet wipes. Figure 8 shows also an alternative configuration for the flap 30, due to the nonlinear perforation of the weakening line 34.

In another embodiment, an adhesive can be applied pressure sensitive to the back of the container (the side without flap or dispensing opening) so that the container can advantageously fixed to surfaces temporarily. One time fixed, the front side of the container, with the flap and opening of dispensing, is positioned for use. For example, him container can be fixed on the side of a refrigerator to domestic use, or on the dashboard of a vehicle, for use in a car. The adhesive can be applied by methods known in the technique on a suitable container surface to provide Enough adhesive strength. A protection band can be applied on the adhesive surface before use. A sensitive adhesive to pressure, and which is considered the most advantageous for use in a container of the present invention, is a removable adhesive, such as the pressure sensitive adhesive with low tack used in Post-it® notes. A suitable adhesive is, by example, an acrylate copolymer described in the patent No. 3,691,140, issued on September 12, 1972 to S.F. Silver, assigned to the Minnesota Mining & company Manufacturing Co., of St. Paul, MN., USA, and in the improvements of the same. An adhesive of this type allows the packaging of the The present invention is removably fixed in surfaces.

In another embodiment, the weakening lines that frangibly fix the flap in a first position can be extended, to allow the flap to be removed completely by the user. For example, a perforation next to the proximal part of the flap. The user You can then open the flap as described before, and, just continue breaking until all the flap is withdrawal.

Although embodiments have been illustrated and described particular of the present invention, it will be obvious to the experts in the art that other changes can be made and modifications of different types without leaving the scope of the present invention For example, as shown in Figure 8, the weakening line that defines the part of the opening of dispensing can be nonlinear and therefore form another secondary lapel member. Consequently, the foregoing is intended to cover, in the attached claims, all such changes and modifications, as well as all combinations of features described herein that are within the scope of the present invention.

Claims (10)

1. A package (10) for containing and dispensing sheet products (16), said package characterized by:

(to)

a simple piece of flat sheet material formed to define a bag with a rear face (24), one front face (22), two edges opposite lengths (22, 24), two closed areas, each being one of said closed areas arranged next to two lateral edges opposite (26, 28), and a flexible flap (30), which can rotate articulated from a first position around one of said longitudinal edges; covering said flap (30), at least one part of said front face (22) when it is in said first position;

(b)

having bliss flap (30) opposite side edges, said edges being juxtaposed and welded sides in said enclosed areas (32); Y,

(c)

having bliss flap (30) a transverse geometric axis (36), and at least one weakening line (34) arranged on each side of said axis geometric (36) and inside said lateral edges (26, 28), allowing said weakening lines (34) that a part of said flap (30) is frangibly fixed in said first position.

2. The flexible container (10) of the claim 1, wherein said front face of said bag has an opening of dispensing (42) to dispense sheet products (16). 3. The flexible container (10) of the claim 2, wherein said dispensing opening (42) is formed by a slit of said front face, said slit having, when formed, a width of essentially zero mm. 4. The flexible container (10) of the claim 2, wherein said dispensing opening (42) is configured in oval shape 5. The flexible container (10) of the claim 1, which has separable closure means (38) and re-closable and for the repeatable closing of said flap in said first position. 6. The flexible container (10) of the claim 1, wherein said flat sheet material comprises a polymer chosen from the group consisting of: polyethylene, polypropylene. 7. The flexible container (10) of the claim 1, in which each of said weakening lines (34) is formed by perforations. 8. A method for forming a flexible container (10) for containing and dispensing sheet products (16), said method being characterized by the steps of:

(to)

provide a substantially rectangular flexible polymer sheet (60) of suitable size, said sheet having opposite sides first and second (62, 64), which define a first dimension (W), and sides third and fourth opposites (66, 68), which define a second dimension (L);

(b)

form at least two lines of weakening (34), extending each of said weakening lines, generally, in orthogonal direction to said first side (62) and towards said second side (64);

(c)

place a battery of said sheet products (16) on said polymer sheet (60); said products being in sheets (16) arranged substantially centered with respect to said sides first and second (62, 64);

(d)

fold a first part (74) of said polymer sheet (60) so that said fourth side (68) is arranged approximately in parallel with said third side (66), and approximately one third of said length from said third side (66), thereby forming an area of bag (14) containing said stack of sheet products (16).

(and)

fold a second part (70) of said polymer sheet (60) so that said third side (66) is arranged approximately in parallel with said fourth side (68), and approximately one third of said length from said fourth side, to form a package folded in three parts with opposite sides first and second (26, 28); Y,

(F)

join a part of said polymer sheet folded in three parts next to said opposite sides first and second (26, 28).

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9. The method of claim 8, wherein said weakening lines (34) are formed by drilling. 10. The method of claim 8, wherein said first dimension (W) is larger than said second dimension (L).