ES2811479T3 - Bag and related production procedure - Google Patents

Abstract

Bag (1) comprising: - at least one first wall (2) and at least one second wall (3) mutually joined at at least one side edge (4) and at least one bottom edge (5) to define a space of containment (6) and having a first and second upper edges (7, 8) separated from each other to define an access opening to said containment space (6); - at least one first and one second fins (9, 10) spaced from each other, extending from the first wall (2) beyond said first upper edge (7); - at least a third and a fourth fin (11, 12) spaced apart from each other, extending from the second wall (3) beyond said second upper edge (8); wherein said first fin (9) is associated with said second fin (10) to form a first grip handle (13) and said third fin (11) is associated with said fourth fin (12) to form a second grip handle (13)); characterized in that said first grip handle (13) and said second grip handle (13) enclose respective grip cavities (15) having respective planes substantially parallel to said first side wall (2) and said second side wall (3).

Description

DESCRIPTION

Bag and related production procedure

Technical Field

The present invention relates to a bag and the relevant production method.

Background of the Technique

Bags that are generally used to transport purchased goods and goods, particularly plastic bags, must now be subject to specific technical regulations and use limitations to cope with ever-increasing requirements related to environmental protection.

For example, plastic bags currently on the market must comply with specific thickness limits according to the type of end use (transport of food or non-food products) and according to the selected technical characteristics (position of the handles, sealing and the like).

Another limit imposed by the regulations refers to the reuse of the plastic bag once the main function of transporting the purchased goods is fulfilled.

For a plastic bag to be put on the market, it must be "reusable", that is, it must guarantee its resistance and durability to allow it to be reused for a certain period of time, both with the aim of fulfilling the same functions for which It has been manufactured, and with the aim of fulfilling other functions.

For these reasons, the need to manufacture bags that can be reused multiple times and for various purposes is well known, as well as the need to develop processes capable of producing such bags in an efficient and cost-effective manner.

Known techniques for making bags involve sealing two sheets, for example two plastic sheets, to form a double layer for processing, in particular for stamping.

After the punching procedure a "gap" is created that defines the opening edges of the bag and creates the bag grip handles.

Such handles are formed by blade fins which are extensions of the blades themselves and each blade of one blade is associated with the corresponding blade of the opposite blade.

The gripping cavities defined by the handles, in this way, are orthogonal to the plane of placement of the blades. Said characteristic entails a drawback related to the inconvenience of use, since the bag thus obtained will be uncomfortable to carry.

Other bags are known from documents FR2529529 and GB1238497, which describe a bag according to the preamble of claim 1 and a method according to the preamble of claim 7.

Description of the Invention

The main objective of the present invention is to provide a bag that can be reused after its first use, whose production method is simple to implement. An object of the present invention is to provide a bag that can also be reused for purposes other than the initial one.

Another object of the present invention is to provide a bag production method that can be easily integrated into existing production lines.

Another object of the present invention is to provide a bag and a relevant production method, which makes it possible to overcome the aforementioned drawbacks of the prior art within the scope of a simple, rational, easy, efficient and cost-effective solution.

The objects mentioned above are achieved by the present bag having the features of claim 1 and by this production method having the features of claim 7. Brief Description of the Drawings

Other features and advantages of the present invention will become more apparent from the description of a preferred, but not exclusive, embodiment of a bag and relevant production method, illustrated by way of An indicative, but not limiting example in the attached drawings, in which:

Figure 1 is an axonometric view of the bag according to the invention;

Figure 2 is a sectional view of the bag according to the invention;

Figure 3 is a schematic view of a use of the bag according to the invention;

Figure 4 is a schematic view of the production method of the bag according to the invention;

Embodiments of the Invention

With particular reference to these figures, the reference number 1 globally indicates a bag.

The bag 1 comprises at least a first wall 2 and at least a second wall 3 joined together at at least one lateral edge 4 and at least one lower edge 5 to define a containment space 6.

In this embodiment, the bag 1 is made of plastic, with the first wall 2 and the second wall 3, both made of plastic material.

The walls 2, 3 come from two plastic sheets sealed together at two side edges 4 and at the bottom edge 5.

The embodiment in which the two walls 2, 3 come from the same plastic sheet folded over itself to form a first side edge and which has an opposite side edge that is sealed cannot be ruled out, that is, with the extreme sides of the folded sheet sealed to define the side edge itself.

The alternative solution in which the walls 2, 3 are made of textile material, for example cloth, jeans, microfiber, cotton, carbon fibers, technical materials in general or other textile materials cannot be ruled out.

The walls 2, 3 are provided with the respective first and second upper edges 7, 8 spaced from each other to define an access opening to the containment space 6.

In the present discussion, the words "upper" and "lower" and the like refer to the conditions of normal use of the bag 1, that is, when the bag 1 is carried by the user to transport products and purchased goods. Bag 1 also comprises first and second flaps 9, 10 spaced apart, extending from first wall 2 beyond first upper edge 7. Similarly, bag 1 comprises third and fourth flaps 11, 12 spaced apart, extending from the second wall 3 beyond the second upper edge 8.

Embodiments having a greater number of fins than those described above cannot be ruled out. According to the invention, the first fin 9 is associated with the second fin 10 to form a first grip handle 13 and the third fin 11 is associated with the fourth fin 12 to form a second grip handle 13.

The first handle 13 and the second handle 13 enclose the respective gripping cavities 15 which have their respective planes substantially parallel to the first wall 2 and the second wall 3.

The walls 2, 3, in fact, approximately identify a principal plane defined by a first axis 16 orthogonal to the plane itself.

The gripping cavities 15 enclosed by the handles 13 of the bag 1 are also in planes substantially parallel to those of the walls 2, 3, that is, defined by a second orthogonal axis 17 parallel to the first axis 16. The handles 13 formed by joining the first flap 9 with the second flap 10 and the third flap 11 with the fourth flap 12, and therefore having gripping cavities 15 oriented parallel to the walls 2, 3, they have the technical effect that the bag 1 can be used.

As shown in Figure 3, the handles 13 can be easily carried on the shoulders, with the walls 2, 3 remaining oriented so as not to cause discomfort or hindrance to the user.

Advantageously, the first fin 9 and the second fin 10 are continuous extensions of the first wall 2 beyond the first upper edge 7.

Similarly, the third fin 11 and the fourth fin 12 are continuous extensions of the second wall 3 beyond the second upper edge 8.

As illustrated in the figures, the fins 9, 10, 11, 12 are plastic strips that extend as extensions continuous lines of the respective walls.

Different embodiments in which the fins are sealed, sewn or attached to the respective walls cannot be ruled out.

Conveniently, the bag 1 comprises first conjunction means adapted to hold the first flap 9 and the second flap 10 in the respective free end portions of the flaps 9, 10.

Similarly, the bag 1 comprises second conjunction means adapted to hold the first flap 11 and the second flap 12 in the respective free end portions of the flaps 11, 12.

The first connecting means and the second connecting means are advantageously pressure sealing operations, but alternative solutions such as, for example, adhesive substances, clips, seams or combinations thereof cannot be ruled out.

Next, a production procedure of the bag is described.

The method comprises a phase of coupling A of a first wall 2 and of a second wall 3 to form a double layer 18 that can be filled, for example, with goods and products.

In the present embodiment, the first wall 2 and the second wall 3 are made of plastic material.

In particular, the walls 2, 3 are two plastic sheets obtained from traditional processes. By way of example, the traditional process is described that comprises a phase of melting and extrusion of polymeric material, and a subsequent phase of cooling and flattening of the extruded material to form plastic strips to be wound on coils and be processed to obtain plastic sheets. usable in the production of bags.

Embodiments in which the first wall 2 and the second wall 3 are made of textile material, for example cloth, jeans, microfiber, cotton, carbon fibers, technical materials in general or other textile materials cannot be ruled out.

In this case, the walls 2, 3 will be made of spools of textile material to be cut automatically, for example by laser cutting, creating sheets of cloth or other material. In the embodiment illustrated in Figure 4, two separate sheets are used to make the walls 2, 3, but the solution in which there is a single sheet, properly folded, to obtain the two walls 2, 3 cannot be ruled out.

In any case, the method comprises a phase of joining Ra of the first wall 2 and of the second wall 3 in at least one of a lower edge 5 and a lateral edge 4.

With reference to the figures, during the process, the bonding phase occurs both at the lower edge 5 and at the side edges 4.

Advantageously, the joining phase Ra comprises sealing the first wall 2 and the second wall 3 to obtain the lower edge 5 and the lateral edge 4.

Therefore, the sides of the walls 2, 3 that are joined are sealed, for example by pressure.

Different techniques for the Ra bonding phase, such as bonding or heat sealing, cannot be ruled out.

The method then comprises a processing phase L of the double layer 18 for the definition in the first wall 2 of a first upper edge 7 and of a first fin 9 and of a second fin 10, these two extending beyond the first upper edge 7, and for the definition in the second wall 3 of a second upper edge 8 and of a third fin 11 and of a fourth fin 12, these two extending beyond the second upper edge 8. Preferably, the processing phase L comprises a punching sub-phase F of the double layer 18 to define the upper edges 7, 8 and to obtain the fins 9, 10, 11, 12 as continuous extensions of the first wall 2 and the second wall 3.

In this way, in a single phase, the fins 9, 10, 11, 12 and the upper edges 7, 8 can be obtained directly from the walls 2, 3.

In fact, by pressing a specially shaped die on the double layer 18, the latter is formed by eliminating a portion of plastic material congruent with the die itself.

The punching allows to create a deepening in the plane of placement of the double layer 18, a hole whose perimeter is defined by the fins 9, 10 or by the fins 11, 12 in the respective first wall 2 and second wall 3, and the edges higher 7, 8. Solutions in which the processing phase L comprises sub-phases cannot be ruled out additional, in addition to the punching, useful for working the double layer 18 for the conformation of the bag 1.

The procedure finally comprises a phase of implementation Re of the gripping handles 13.

According to the invention, the implementation phase Re is subsequent to the processing phase L and comprises:

- a first phase of conjunction C1 of the first flap 9 with the second flap 10 for the formation of a first handle 13 associated with the first wall 2; Y

- a second phase of conjunction C2 of the third flap 11 with the fourth flap 12 for the formation of a second handle 13 associated with the second wall 3.

Conveniently, the first phase of conjunction C1 and the second phase of conjunction C2 comprise sealing the first flap 9 to the second flap 10, as regards the formation of the first handle 13, and sealing the third flap 11 to the fourth flap. 12, as regards the formation of the second handle.

Solutions in which only the first phase of conjunction C1 or only the second phase of conjunction C2 comprises sealing the respective fins cannot be ruled out.

In any case, the sealing is preferably of the pressure type, but other alternative solutions cannot be ruled out.

For example, the solution in which the sealing of the respective fins comprises heat sealing, in particular heat sealing performed manually, cannot be ruled out.

The solution in which the sealing of the respective fins comprises electro-welding, in particular automatic electro-welding, cannot be ruled out either.

Usefully, the method can also comprise a decoration phase, not shown in the figures, adapted to add decorative and aesthetic elements to the bag 1.

In particular, the decoration comprises decorating the bag 1 with drawings, symbols and letters, to make it recognizable and distinguishable, giving the product an original characteristic.

The decoration also comprises associating said bag with additional decorative elements adapted to increase the aesthetic value of the bag, such as, for example, accessories, sequins, decorative patterns and other similar elements.

In a second alternative embodiment, not shown in the figures, the first phase of conjunction C1 and the second phase of conjunction C2 comprise the seam of the first flap 9 to the second flap 10 and the seam of the third flap 11 to the fourth flap. 12, respectively.

The flaps can be sewn using different materials, such as cotton threads, wool, plastic, paper, non-woven fabric and other types of materials that can hold the seam firmly.

The alternative solution cannot be ruled out in which only the first phase of conjunction C1 or only the second phase of conjunction C2 comprises the stitching of the respective flaps.

Different solutions that provide a first phase of conjunction C1 and a second phase of conjunction C2 that comprise a different attachment of the respective flaps cannot be ruled out, for example bonding by adhesive means or the application of clips and other means of conjunction.

In particular, solutions that provide closure of the flaps 9 and 10 and the flaps 11, 12 with buttons, reinforced handles and zippers cannot be ruled out.

In practice, it has been found that the described invention achieves the intended objects and, in particular, it is emphasized that the devised bag can be reused after its first use and its production method is simple to implement.

The devised bag, in fact, can be used by a user thanks to the particular orientation of the grip handles obtained with the new procedure.

Therefore, the devised bag can also be reused for purposes other than the original.

An example is the case of a user who receives the bag when leaving a store after buying.

The user, thanks to the new features of the product, could reuse the bag as a clothing accessory, especially if the bag itself has special aesthetic characteristics.

The procedure used to produce this bag is also particularly simple and easy to integrate into production lines already designed to make traditional bags.

In fact, the main difference from traditional procedures, even if it is substantial and with surprising effect, is that it does not require any particular changes to existing production lines, having minimal impact on production costs.

Claims (12)

1. Bag (1) comprising: - at least one first wall (2) and at least one second wall (3) mutually joined at at least one side edge (4) and at least one bottom edge (5) to define a containment space (6) and having a first and second upper edges (7, 8) spaced apart to define an access opening to said containment space (6); - at least one first and one second fins (9, 10) spaced from each other, extending from the first wall (2) beyond said first upper edge (7); - at least a third and a fourth fin (11, 12) spaced apart from each other, extending from the second wall (3) beyond said second upper edge (8); wherein said first fin (9) is associated with said second fin (10) to form a first grip handle (13) and said third fin (11) is associated with said fourth fin (12) to form a second grip handle (13)); characterized in that said first grip handle (13) and said second grip handle (13) enclose respective grip cavities (15) having respective planes substantially parallel to said first side wall (2) and said second side wall (3). Bag (1) according to claim 1, characterized in that said first flap (9) and said second flap (10) are continuous extensions of said first wall (2) beyond said first upper edge (7) . Bag (1) according to one or more of the preceding claims, characterized in that said third fin (11) and said fourth fin (12) are continuous extensions of said second wall (3) beyond said second edge upper (8). Bag (1) according to one or more of the preceding claims, characterized in that it comprises first conjunction means adapted to hold said first flap (9) and said second flap (10) in the respective free end parts. Bag (1) according to one or more of the preceding claims, characterized in that it comprises second conjunction means adapted to hold said third flap (11) and said fourth flap (12) in the respective free end parts. Bag (1) according to one or more of the preceding claims, characterized in that it is made of a plastic material. 7. Procedure for the production of plastic bags, which includes - a coupling phase (A) of a first wall (2) and a second wall (3), to form a double fillable layer (18); - a joining phase (Ra) of said first wall (2) and said second wall (3) in at least one of a lower edge (5) and a lateral edge (4); - a processing phase (L) of said double layer (18) for the definition in said first wall (2) of a first upper edge (7) and of a first fin (9) and of a second fin (10) that extend beyond said first upper edge (7), and for the definition in said second wall (3) of a second upper edge (8) and of a third fin (11) and of a fourth fin (12) that are extend beyond said second upper edge (8); and - a phase of implementation (Re) of the gripping handles (13); characterized by the fact that said implementation phase (Re) is subsequent to said processing phase (L) and comprises: - a first phase of conjunction (C1 of the first fin (9) with the second fin (10) for the formation of a first handle (13) associated with the first wall (2); and - a second phase of conjunction (C2) of the third fin (11) with the fourth fin (12) for the formation of a second handle (13) associated with the second wall (3). 8. Method according to claim 7, characterized in that said first wall (2) and said second wall (3) are made of a plastic material. 9. Method according to one or more of claims 7 and 8, characterized in that said joining phase (Ra) comprises at least partially sealing said first wall (2) and said second wall (3) to obtain at least one of said lower edge (5) and said lateral edge (4). 10. Method according to one or more of claims 7 to 9, characterized in that said processing phase (L) comprises a punching phase (F) of said double layer (18) for defining said upper edges ( 7, 8) and obtaining said fins (9, 10, 11, 12) as continuous extensions of said first wall (2) and of said second wall (3). 11. Method according to one or more of claims 7 to 10, characterized in that at least one of said first and second phases of conjunction (C1, C2) comprises sealing said first fin (9) to said second fin (10) and / or the sealing of said third fin (11) to said fourth fin (12) respectively. 12. Method according to one or more of claims 7 to 11, characterized in that at least one of said first and second phases of conjunction (C1, C2) comprises the stitching of said first fin (9) to said second fin (10) and / or the stitching of said third fin (11) to said fourth fin (12) respectively.