FR3077805A1 - Handbag with shoulder straps - Google Patents

Abstract

The present invention relates to a bag (1) with shoulder handles, comprising a tubular structure developing along an axis (X), having two main walls (41, 42) and two lateral gussets (51, 52) a1) a base (2), defined by a weld line (241) which assembles two opposite main walls (41, 42) and the walls of said lateral bellows (51, 52), said bottom (2) comprising a second weld line (242); ), separate from said first weld line (241), a2) a top filler opening (3); a3) two bellows-shaped handles (61, 62) defined by a weld line (161, 162) which assembles the walls of said lateral gussets (51, 52).

Description

Title of the invention: Bag with shoulder straps.

The present invention relates to a bag with shoulder straps, in particular a bag with shoulder straps with side walls in the form of a bellows.

The bag described below can be produced for example by means of a film of biodegradable material.

In particular, the material used to produce the bag described below can be a material that complies with the specifications of community standards UNI EN 13432: 2002 (Requirements relating to packaging recoverable by composting and biodegradation - Test programs) and UNI EN 11451: 2012 (Biodegradable and compostable bags for the collection of the organic fraction of typical urban solid waste and requirements and test methods).

The bag described below can be used for example to temporarily contain fruits and vegetables.

It is known to make bags from a tubular film (or, alternatively, from a single-ply film) which is machined after successive phases of cutting, folding and welding.

We know in particular how to make bags with bellows-shaped side walls and handles which extend beyond the filling opening and are positioned in correspondence with the sides of the bags.

In these bags there is provided a central part, consisting of two superimposed layers of film, and two side parts, consisting of four superimposed layers of film.

These bags are commonly called "bags with shoulder straps", "shoulder bags" or more commonly "shopping bags" and are widely used, for example in the retail sector.

Bags with shoulder straps can be available in compressed form, with or without packaging, or in the form of rolls of bags assembled by a precut line.

To minimize the costs of the raw material, the bags with shoulder straps are made of a film of very reduced thickness, for example with an average thickness of between 12 and 20 μm approximately.

Due to the reduced thickness of the film material, the bags currently produced tend to tear easily.

For example, when the bag is filled with products and is held raised by the handles, there is a tendency to tear at the handles.

The objective of the inventor is to solve, at least in part, the problems of the prior art and in particular the above-mentioned problem.

This objective is achieved by a bag with shoulder straps according to claim 1.

A possible embodiment of a bag with shoulder straps according to the claims of the patent is described below with reference to the sheets of attached drawings in which:

- [Fig. 1] is a perspective view of a partially open shoulder bag;

- [Fig. 2] is a view, partially in section, of the same bag as that of FIG. 1.

With reference to the accompanying drawing boards, the number 1 indicates in its entirety a bag of the type with slightly open shoulder straps.

This type of bag is also known as a "bag with shoulder straps" or "shopping bag".

The bag 1 comprises a tubular film forming a bellows 11 having a development axis X.

In the example illustrated, the tubular film-like structure 11 has a thickness that is substantially and / or generally uniform.

In the example illustrated, the tubular structure 11 consists of a monolayer film.

In the example illustrated, the material from which the tubular film 11 is made can, for example, be polylactic acid (PLA).

The bag 1 has a bottom 3, two opposite main walls 41, 42 with lateral flanks 81, 82, a loading opening 2 and two handles 61, 62.

In the example illustrated, the tubular film 11 comprises first and second bellows 51, 52 which extend inside the opposite lateral flanks 81, 82 of the walls 41, 42.

In its lower part, the tubular film forming a bellows 11 is closed by a weld line 241 substantially perpendicular to the development axis X, so as to create the bottom 3.

The weld line 241 has a length which corresponds substantially to the distance between the two sides 81, 82 of the bag 1.

In its upper part, the tubular film forming a bellows 11 has two weld lines 161, 162 substantially aligned with each other and perpendicular to the development axis X, produced in correspondence with the top of each bellows 51, 52.

Still in its upper part, the bellows 51, 52 have openings 511, 521 of sufficient size to be able to insert the fingers of the hand.

In this way are created two handles 61, 62 forming a bellows.

It is preferably provided a central cutout 18 in the tubular film 11, between the upper ends of the two bellows 51, 52, so as to better define the handles 61,62.

In the example illustrated, each bellows-shaped flank 51, 52 of the bag 1 comprises an internal fold 510; 520, two external folds 511, 512; 521, 522 and two walls 513, 514; 523, 524 delimited by the internal fold 510; 520 and by the two external folds 511, 512; 521, 522.

The weld line 241 produced to create the bottom 3 therefore relates to four layers of film material at the ends of the bag 1 and two layers of film material in the central part of the bag 1.

The weld lines 161, 162 produced to create the handles 61, 62 relate to four layers of film material.

The lower end of the bag 1 may optionally include a second weld line 242, distinct from the first weld line 241, which is substantially parallel to the first weld line 241.

In the example illustrated, the second weld line 241 also has a length which corresponds substantially to the distance between the two sides 81, 82 of the bag 1.

In the example illustrated, the two weld lines 241, 242 arranged on the bottom 3 of the bag 1 are two weld lines parallel to each other and separated from each other by a space about 2-3 mm.

The second lower weld line 242 can be placed on the lower edge of the bag 1 or else about 2-3 mm from the edge of the bag 1.

A characteristic of the bag 1 is the fact that each handle 61, 62 has a second weld 163, 164, distinct from the first weld line 161, 162.

According to the illustrated embodiment, the second weld line 163, 164 of each handle 61, 62 is distinct from the first weld line 161, 162.

The two weld lines 161, 163; 162, 164 produced on each handle 61, 62 can be separated from one another by a space of 2-3 mm.

This characteristic improves the resistance of the junction of the handles 61, 62 and therefore reduces the tendency of the latter to tear.

It should indeed be emphasized that the handles are subjected to a higher loading than the bottom of the bag.

It should be noted that this solution improve the reliability of the bag 1 without causing any increase in the production time thereof and the raw material used.

The film material with which the bag 1 is made can comprise pure polymers or polymers mixed with additives or various fillers.

This film can in particular be a monolayer film or a coextruded multilayer film.

In the example illustrated, the bag 1 is produced with a film of biodegradable material, in particular a biodegradable material according to community standard UNI EN 13432: 2002 (Requirements relating to packaging recoverable by composting and biodegradation - Test programs ) and UNI EN 11451: 2012 (Biodegradable and compostable bags for the collection of the organic fraction of urban solid waste and requirements and test methods).

The average thickness of the film in which the bag 1 is made can be for example between 12 and 20 pm approximately (it should be noted that these values are not mandatory).

The bag 1 thus described can be produced from a single-ply film or, preferably, from a tubular film.

Depending on the type of production facility, the bags can be produced in stacks or rolls, joined by a precut line.

[Claim 1]

claims

Claims (1)

Bag (1) with shoulder straps, comprising a tubular structure (11) in the form of a film, developing along an axis (X) and having a uniform thickness, said tubular structure (11) having at. two main walls (41, 42); b. two side bellows (51, 52) vs. a bottom (2), defined by at least one weld line (241) which joins said two opposite main walls (41, 42) and the walls of said lateral bellows (51, 52); d. an upper filling opening (3); e. two handles (61, 62) forming a bellows, defined by a weld line (161, 162) which joins the walls of said lateral bellows (51, 52) characterized in that each of said two handles (161, 162) has a second weld line (163, 164) separate from said first weld line (161, 162). 1/2 [Fig. 1]