ES1248305U - MASK OF PROTECTION AGAINST PATHOGENS (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Mask (1) for protection against pathogens, of the type comprising a covering portion (2) of the mouth and nose area, and means for attaching to the head, characterized in that the covering portion (2) comprises at least the following layers: - a first layer (3) of monolayer nonwoven fabric (TNT), and - a second layer (4) of SMS three-layer non-woven fabric. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

MASK OF PROTECTION AGAINST PATHOGENS

OBJECT OF THE INVENTION

The present invention refers to a mask for protection against pathogens, usable by health or essential services personnel, or by people in general to prevent contagions from pathogen access by mouth or nose.

BACKGROUND OF THE INVENTION

At present, various non-woven fabrics (TNT) are known, which are nothing other than sheet fabrics formed by the welding of synthetic fibers. They can be monolayer (single or spunbond TNTs) or multilayer. Among the multilayers are known the SMS (spunbond / meltblown / spunbond) formed by 3 layers joined together, with two outer layers of spunbond and an intermediate membrane that is a microbial barrier.

These nonwoven fabrics are used in sanitary equipment (masks, gowns, caps) for their hydrophobic properties, which repel and block the passage of fluids, especially those of SMS. However, they do not resist washing and sterilization, and therefore are for single use only.

The global crisis of the disease COVID-19 is showing us how many times this is a serious limitation for the protection of public health against the spread of especially infectious and discreet pathogens -such as the coronavirus- especially in the case of health professionals , and how the lack of stockpiling of these equipments together with the non-possibility of reusing them is causing problems such as the increase in contagion and the prolongation of the states of limitation of movements to the population due to shortages.

Specifically in the case of the coronavirus, it is generally accepted that one of the best protection measures is the use of masks (which include a covering portion of the mouth and nose area, and means of attachment to the head) to prevent contagion through the mouth and nose. However, there is the limitation of the availability of the same with an adequate degree of protection (FFP2, which blocks the pathogen in both the entry and exit directions), the non-possibility of reuse of the same, and the high price of them as well, especially those provided with valve.

These drawbacks are solved with the use of the mask of the invention.

DESCRIPTION OF THE INVENTION

The pathogen protection mask of the invention is of the type comprising a covering portion of the area of the mouth and nose, and means for attaching to the head, where according to the invention, the covering portion comprises -in the Simpler version of the mask - at least the following layers:

-a first layer of monolayer nonwoven fabric (TNT), and

-a second layer of SMS trilayer non-woven fabric (spunbond / meltblown / spunbond).

In this way, an SMS non-woven mask is obtained, therefore hydrophobic and pathogen-blocking, but reinforced with another layer that increases its mechanical resistance, especially against autoclave sterilizations, allowing it to be reused several times. , saving costs, improving the availability of masks, and being environmentally friendly by making reusable an asset of intensive use and that is currently single use. At the same time, this additional layer cooperates in blocking the pathogen's passage.

This simpler version of the invention is mainly usable in children, who have better resistance to the effects of the coronavirus and a lower rate of respiration, being able to configure versions of effectiveness adapted to adults and healthcare providers that are described as preferred embodiment examples of the invention, later.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows a front view of the mask of the invention, before use.

Figure 2 shows a view of the mask of the invention during use.

Figures 3, 4 and 5 show respective partial sections of three variants of embodiment of the mask of the invention.

Figure 6 shows a view similar to that of Figure 2, where the covering portion is shaped like a beak.

DESCRIPTION OF A PRACTICAL EMBODIMENT OF THE INVENTION

The mask (1) for protection against pathogens of the invention is of the type that comprises (see Figures 1 and 2) a covering portion (2) of the mouth and nose area, and means for fastening to the head (10) , in which, according to the invention , the covering portion (2) comprises, at least, the following layers (see fig 3):

- a first layer (3) of monolayer nonwoven fabric (TNT), and

-a second layer (4) of SMS trilayer non-woven fabric.

This simpler variant would be mainly usable in children, and it would be sufficient if the first layer (3) of monolayer nonwoven fabric (TNT) had 80 grams of grammage, and the second layer (4) of three-layer SMS nonwoven fabric had 14 grams. of grammage.

In a version more suitable for non-sanitary adults, which has a higher flow rate and breathing power, the covering portion (2) has the following layers (see fig 4):

- two first outer layers (3) of monolayer nonwoven fabric (TNT),

- at least a second intermediate layer (4) of SMS trilayer non-woven fabric,

where the first two layers (3) give greater body, resistance to chafing, and filtration capacity. In this version, the preferred typologies for the layers (3, 4) are: -two first outer layers (3) of monolayer nonwoven fabric (TNT) of 80 grams of grammage, the exterior and the interior of 60 grams of grammage,

-a second intermediate layer (4) of SMS non-woven trilayer of 14 grams of grammage. This embodiment would achieve FFP2 grade for a reasonable time.

For healthcare personnel (although logically they can also be used by anyone, essential services or not), it is preferred that the covering portion (2) comprises the following layers (see fig 5):

-two first outer layers (3) of monolayer nonwoven fabric (TNT),

-two intermediate (4) second layers of SMS trilayer nonwoven, and

- a third intermediate layer (4b) of monolayer nonwoven fabric (TNT) arranged between the two second intermediate layers (4a). We thus obtain multiple layers of protection, two with high protection against the passage of pathogens and three with assembly.

The following layers are preferred for this particular version:

-two first outer layers (3) of single layer non-woven fabric (TNT) of 60 grams of grammage, -two second layers (4) of intermediate three-layer non-woven SMS fabric of 14 grams of grammage, and -a third layer (4b) intermediate of non-woven non-woven fabric (TNT) of 80 grams of grammage, arranged between the two second intermediate layers (4). For this embodiment, at least FFP2 protection and the maintenance of mechanical and functional properties have been obtained after 4 autoclaving at 125 degrees Celsius and 20 minutes of drying cycle. Functional tests have been carried out with triple dental chair syringes at maximum air and water pressure, which is greater than the pressure of an artery (in systolic) - for 3 minutes, obtaining a completely hydrophobic reaction of the material, leaving the layer in contact with a completely dry mouth.

Additionally, the covering portion (2) may comprise a deformable upper adaptation guard (6) (return to Figures 1 and 2), for facial adaptation to the shape of the bridge of the nose. Said tutor (6) would comprise a blunt-edged aluminum strip that, when folded to the shape of the bridge of the nose, preserves the shape and closes the mask superiorly, improving the hold. Ideally, the aluminum strip is 10 cm long, 3 mm high and 0.02 mm thick.

Furthermore, it is preferred that the covering portion (2) comprises folds (20) in its bosom and a perimeter edging (21), allowing a vertical fan extension that allows the entire area of the airways, mouth and chin to be covered without the breaking of any fiber of the tissues, as seen in fig 2. Inside the upper part of the edging (21) the tutor (6) can be arranged. In this provision, preferably, the covering portion (2), before the folding forming the folds (20), has a rhombus configuration (the height, before the extension of the folds, on the sides at the level of the cheeks is less than in the middle), this makes it more ergonomic and thus we also reduce the mist (see fig 2). Alternatively, the covering portion (2) may have a peak configuration as seen in FIG. 6, to better encompass the nose and mouth area and to fit better around the face, chin and throat.

For its part, the means of attachment to the head can be for example:

-Open strips (elastic or non-elastic) (7), 75 cm long, for example, on both the right and left sides (see fig 1). These are tied at the back of the head and the nape respectively, or

-Closed elastic straps (rubber) (8), which are attached to the ear on each side, or to the head as seen in fig 2.

These strips (7, 8) can form part of the perimeter edging (21), as seen in the figures.

Not limiting, the preferred measures for the mask of the invention are indicated, depending on the user:

-child from 3 to 5 years: 13 x 8 cm,

-child from 6 to 12 years old: 14 x 10 cm; fixation by means of 18 cm elastic ear straps, - non-sanitary adult: 20 x 8 cm; fixation by means of elastic bands of ear of 22 cm, or with elastic bands to the head 28 cm and 26 cm,

-Sanitary adult: 20 x 8 cm with 2 strips of 75 cm.

Once the nature of the invention has been described, as well as the way of carrying it out in practice, it should be noted that the provisions previously indicated and represented in the attached drawings are subject to detailed modifications as long as they do not alter the fundamental principle.

Claims (13)

1.-Mask (1) for protection against pathogens, of the type that comprise a covering portion (2) of the mouth and nose area, and means for attachment to the head, characterized in that the covering portion (2) it comprises at least the following layers: - a first layer (3) of monolayer nonwoven fabric (TNT), and -a second layer (4) of SMS trilayer non-woven fabric. 2. - Mask (1) for protection against pathogens according to claim 1, wherein the covering portion (2) comprises: -a first layer (3) of monolayer non-woven fabric (TNT) of 80 grams of grammage, and -a second layer (4) of 14-gram SMS three-layer non-woven fabric 3.- Mask (1) for protection against pathogens according to claim 1, wherein the covering portion (2) comprises the following layers: - two first outer layers (3) of monolayer nonwoven fabric (TNT), - at least a second intermediate layer (4) of SMS three-layer non-woven fabric. 4.- Mask (1) for protection against pathogens according to claim 3, wherein the covering portion (2) comprises the following layers: -two first outer layers (3) of single layer non-woven fabric (TNT) of 80 grams of grammage, the exterior and interior of 60 grams of grammage, and -a second intermediate layer (4) of SMS non-woven trilayer of 14 grams of grammage. 5.-Mask (1) for protection against pathogens according to claim 1, wherein the covering portion (2) comprises the following layers: - two first outer layers (3) of monolayer nonwoven fabric (TNT), -two intermediate (4) second layers of SMS trilayer nonwoven, and - a third intermediate layer (4b) of monolayer nonwoven fabric (TNT) arranged between the two second intermediate layers (4). 6. - Mask (1) for protection against pathogens according to claim 5, wherein the covering portion (2) comprises the following layers: -two first outer layers (3) of monolayer non-woven fabric (TNT) weighing 60 grams, -two second layers (4) intermediate of three-layer SMS fabric of 14 grams of grammage, and -a third third layer (4b) of monolayer non-woven fabric (TNT) of 80 grams of grammage, arranged between the two second layers ( 4) intermediate. 7. - Mask (1) for protection against pathogens according to any of the preceding claims, wherein the covering portion (2) comprises a deformable guard (6) for superior adaptation of the covering portion (2). 8. - Mask (1) for protection against pathogens according to claim 7, where the guard (6) comprises a strip of aluminum with blunt edges. 9. - Mask (1) for protection against pathogens according to claim 8, where the aluminum strip has dimensions of 10 cm long, 3 mm high and 0.02 mm thick. 10.- Mask (1) for protection against pathogens according to any of the preceding claims, wherein the covering portion (2) comprises folds (20) in its bosom and a perimeter edging (21). 11.- Mask (1) for protection against pathogens according to any of the preceding claims, wherein the covering portion (2) has a rhombus configuration. 12.- Mask (1) for protection against pathogens according to any of claims 1 to 9, wherein the covering portion (2) has a peak configuration. 13.-Mask (1) for protection against pathogens according to any of the preceding claims, wherein the means for attachment to the head are selected from: -open strips (7) on both the right and left sides, - closed elastic straps (8).