NL2029463B1

NL2029463B1 - Paper sack.

Info

Publication number: NL2029463B1
Application number: NL2029463A
Authority: NL
Inventors: Antonio Lozano Ochando Vicente; Javier Y Cabello Silva Francisco
Original assignee: Innovation Packmakers S L
Priority date: 2020-10-20
Filing date: 2021-10-19
Publication date: 2023-09-11
Also published as: AT17808U1; NL2029463A; ES1259168U; ES1259168Y

Abstract

Paper sack comprised of two sheets made of paper cloth of identical width, with a rectangular elongated main sheet (1) comprising a transversal fold line (4) on the lower middle part thereof, which defines the rear wall (3) of the sack and a lower section (5) of the front face thereof, with the second sheet (2) defining the upper section of the front face of the sack, and with these two sections defining a window (6) between them, which is made of a paper netting, wherein both the window and the side walls of the sack comprise inner stitchings, and the sack is designed so that the mouth thereof is folded and secured by means of stitching, with said mouth defining respective channels (8) on each face of the sack, and with a cord (9) going through said channels, which defines the means for tightening and closing the mouth of said sack.

Description

DESCRIPTION

Paper sack.

FIELD OF THE DISCLOSURE

The present invention refers to a paper sack that is especially designed to replace the typical jute sacks, which comprise materials that are difficult to separate and recycle, such as nylon, plastics and similar materials, and which do not always meet the requirements to be used in the food industry due to the migration of certain substances to the jute.

The object of the invention is to provide a sack made of 100% paper, fully recyclable, and suitable for use in the food industry.

The invention is therefore of use in the field of sacks for foodstuff, more specifically the sacks that comprise a window that makes it possible to see the contents inside said sack.

BACKGROUND OF THE INVENTION

Jute sacks are used in the scope of the practical application of the invention, which is the packaging of foodstuff such as chickpeas, beans, lentils, as well as any other foodstuff deemed appropriate, with said jute sacks featuring a window in order to be able to see the quality of the product stored inside the sacks, with said window being made of transparent plastic, and plastic is also the material used for stitching and sowing up the sack, as well as for the cord used to close the sack, all of which represents a drawback that has two different implications: e On the one hand, the issue of separating and recycling these plastic materials. e On the other hand, if the machine used in the manufacturing process to produce this type of sacks is not properly clean, certain substances can migrate to the jute, causing the resulting product to be contaminated with mineral oils.

DESCRIPTION OF THE INVENTION

The paper sack described fully addresses the drawbacks detailed above using a simple but effective solution by providing a sack with the same features as the ones described above, but with a structure made of 100% paper.

More specifically, the sack of the invention is comprised of two rectangular sheets made of paper cloth, the bigger one defining the rear face of the sack, with the lower section thereof defining the front face of the sack after said sheet has been folded, and with the second piece of paper cloth having the same width as the bigger piece, so that said second piece of paper defines the upper section of the front face of the sack, with these two sections defining a separation between them that corresponds to the window that makes it possible to see the product contained in the sack, and with this window being comprised of a netting that is also made of a paper with a wide enough lattice, which makes it possible to see the product contained in the sack while preventing said product from going through said netting.

The window is sewn to the two pieces described above by means of stitching, preferably paper stitchings, as well as to both sides of the sack, so that the mouth thereof folds outward on itself and is sewn in order to define a channel wherein a cord is inserted, which is preferably made of paper.

This produces a sack made of 100% paper, fully recyclable, ecological, resistant and perfectly suitable for use in the packaging of any type of foodstuff.

The following advantages afforded by using paper cloth instead of jute for this type of containers should be highlighted: e |t provides better thermal insulation to fruit than jute does. Fruit is placed in sacks at a temperature of 5 to 6 degrees, which should be maintained throughout the entire chain of logistics (warehouse, chamber, transportation, client warehouse and point of sale). Maintaining this isothermal effect throughout the entire chain of logistics, which must be refrigerated, is key to better preserve products such as citrus fruit. e The sacks are easy to handle when inserting multiple sacks in a box since they absorb moisture, making the material more malleable and adjustable, which is not the case for jute. e Since paper cloth is also thicker in comparison with jute, this provides protection to the fruit against friction between the fruit and the sacks. These sacks are inserted manually in the corresponding box. e It has better moisture absorption than jute, which prevents the appearance of pathogens in collected water. e It has better resistance to traction, with the material showing good resistance to traction when being filled up with fruit through a chute.

BRIEF DESCRIPTION OF THE DRAWINGS

To complete the invention described below and in order to give a better understanding of the characteristics of the invention, according to a preferred embodiment thereof, this description is accompanied by a set of drawings in which the figures described below have been represented, for purely illustrative purposes and should not be construed as limiting:

Figure 1 shows a perspective view of the two pieces of paper cloth comprising a paper sack produced according to the object of the present invention.

Figure 2 shows a front elevation view of the sack of the invention

Figure 3 shows a view of the sack placed “inside out”, in order to be able to see the internal configuration thereof.

PREFERRED EMBODIMENT OF THE INVENTION

In light of the drawings described above, the sack of the invention is comprised of sheets made of paper cloth with a rectangular elongated main sheet (1) comprising a transversal fold line (4) on the lower middle part thereof, which defines the rear wall (3) of the sack as well as a lower section (5) of the front face thereof, with the second sheet (2) defining the upper section of the front face of the sack, and with these two sections defining a window (6) between them in order to see the product contained inside the sack, with the window being comprised of a netting that is also made of paper comprised of a lattice, which makes it possible to see the product contained inside the sack while preventing said product from going through the netting.

As seen in figure 3, both the window and the side walls of the sack are sewn internally, that is, with the sack turned inside out as shown in figure 3, with said stitchings being made of paper and preferably comprising reinforcing bands or strips (7), which are also made of paper.

In addition, as figure 3 also shows, the mouth of the sack folds inward and is secured by means of paper stitchings, defining respective channels (8) on each face of the sack, with a cord (9) going through said channels as a means of tightening and closing the mouth of said sack.

As explained above, the reinforcements and stitchings will not be visible once the sack is produced and turned back to the normal position thereof, as shown in figure 2, resulting in a product that is 100% ecological, recyclable and suitable for use in the food industry.

Evidently, the sheets used to manufacture the sack could be printed with any type of information, logo, brand, etc.

Claims

CONCLUSIONS

1. A paper bag, characterized in that it comprises two sheets made of a paper material of identical width, a rectangular elongated main sheet (1) comprising a transverse fold line (4) on the lower middle portion thereof, which forms the rear wall (3) of the bag and a lower portion (5) of the front thereof, the second sheet (2) defining the upper portion of the front of the bag, and these two portions having a window (6) between them to view the product in the bag, wherein both the window and side walls of the bag include inner stitching, and wherein the mouth of the bag is folded and secured by stitching, the mouth defining respective channels (8) to each side of the bag, and with a cord (9) passing through the channels as a means of tightening and closing the mouth of the bag.

The paper bag, according to claim 1, characterized in that the stitching of the window and the sides of the bag comprise reinforced bands or strips (7) made of paper.

The paper bag, according to claim 1, characterized in that the mouth of the bag folds inwards.