DE102007034535A1 - Regenerationable multilayered mouth or nose protector made of different textile structuring function layers for the protection of viral and/or bacterial infections, comprises a moisture arresting interior layer for dry face skin - Google Patents

Abstract

The regenerationable multilayered mouth or nose protector made of different textile structuring function layers for the protection of viral and/or bacterial infections, comprises a moisture arresting interior layer (1) for dry face skin, a moisture storing intermediate layer (2) for buffering of moisture condensate and visual perspiration, an external filter layer (3) for defense germ carrier particle, an additional design layer lying over the filter layer, a reinforcement system with elastic fastening element, and a geometrical adjustment intended to visual field. The regenerationable multilayered mouth or nose protector made of different textile structuring function layers for the protection of viral and/or bacterial infections, comprises a moisture arresting interior layer (1) for dry face skin, a moisture storing intermediate layer (2) for buffering of moisture condensate and visual perspiration, an external filter layer (3) for defense germ carrier particle, an additional design layer lying over the filter layer, a reinforcement system with elastic fastening element, and a geometrical adjustment intended to visual field. The filter layer has function substance with depot effect for an antibacterial effective surface functionalization. The filter layer is adapted for the separation of solid particles. An opening is present in the design layer for the exchange of filter layer. An integrated sensor function is intended for the signalization of a required exchange of the filter layer. A folded arrangement is present in the filter area. An integration of rotating sealing element is intended around the filter area in which a folder arrangement is present. An integration of describable and readable data carrier is intended in the protector.

Description

Regeneration-capable, multilayer mouth and nose protection made of textile-structured functional layers

Field of application of the invention

The The invention relates to a regenerative, multi-layered Mouth and nose protection from textile-structured functional layers for in particular private use in the occurrence of Epidemics and flu, including bird flu, as well as for the commercial use.

In Recent years have been caused by internationally occurring viral Infectious diseases like SARS (severe acute respiratory syndrome) and bird flu, which is also dangerous for humans (Virus influenza A / H5N1) new potential threats known. This results in a novel need for protection for the population in general and the medically active Staff in particular, with the wearing time of a corresponding Mouth and nose protection extend to the service and leisure got to. For example, one would get out of bird flu developing influenza pandemic for 60 days can.

Usually is used by the staff in appropriate hazardous situations a disposable mouth and nose protection made of nonwoven fabric used.

alternative there is the possibility in the application of reusable, Regenerative reusable mouth and nose protection products, the from the carrier itself by thermal disinfection by decoction can be regenerated again. However, you have to These constructions, too, have many requirements to fulfill the function of an oral and nasal protection. This concerns the filtering action against droplet aerosols and other transport media, the sufficient patency breathing air, the optimal fit at different head and Face shapes and sizes, the wearing comfort in terms Skin contact and thermophysiology as well as the wearing acceptance by aesthetic design. This comprehensive property profile must also be about many Use cycles and regeneration processes are preserved.

It must have a protective effect from both the outside (the environment) to the Carrier of protection, but also from the vehicle to the Be guaranteed to the outside world.

State of the art

From the DE 20 2004 003 089 U1 is already a washable, multi-layer shielding with antiviral and antibacterial effect known. The shielding material comprises an outer layer of woven or knitted textile or nonwoven fabric having a plurality of surface tension reducing hairs with respect to moisture or liquid substances, a layer of woven, knitted or nonwoven material of activated carbon fibers and an inner layer of a moisture repellent fabric. The outer layer is preferably treated with an antiviral and / or antibacterial agent. The activated charcoal layer absorbs odors, volatile organic substances, organic solutions and toxic gases and filters viruses, bacteria and the like using a variety of micropores. The inner layer is made of a moisture-repellent textile fabric, so that moisture exhaled by a user is absorbed in the micropores. The three layers are attached to each other, for example, sewn or woven together. The shielding can be made up as a respirator, details of which are not disclosed. The problem is the dual function of the activated carbon layer for the absorption of liquids or moisture as well as for the filtration of pathogens, as this is a danger of replication of moisture-loving viruses and their transmission to the outside. In addition, the seams for fixing he individual layers increase the risk of the occurrence of leaks.

Further disclosed US 3,620,214 A a washable and sterilizable three-layer surgical respirator in which between two outer polyester layers a filter layer of finely spun micro-glass fiber is arranged, which may be impregnated by means of an acrylic emulsion. This mask is stiff in itself and thus can not be flexible and thus adapt to a face shape sealing.

In the DE 76 00 278 U1 Furthermore, a nonwoven fabric face mask for the medical and non-medical field is described, which consists of at least three non-woven textile layers mechanically or adhesively bonded to one another, the middle filter layer consisting of a highly air-permeable, binder-free, non-woven polymeric fleece fiber fleece. A regeneration capacity of the mask is not specified.

After DE 103 34 175 B4 There is a reusable respirator to reduce the risk of infection by droplet infections from a silk pocket, in which serving as a filter insert can be inserted from a washable nonwoven. Thus, both the insertion pocket and the filter are reusable. An expansion fold allows an adaptation of the approximately rectangular mask to the Ge visual contour of the wearer. The problems of moisture transport and moisture storage are not solved.

The EP 0 398 611 A1 discloses a medical or hygienic respirator mask against viruses from a washable tissue which leaves water only in the vaporous state of matter. For this purpose, the fabric carries, for example, on one side an unporous layer of a hydrophilic polyurethane.

Ultimately describes US 5,269,024 A A combined head and face protection for allergy sufferers from a single-layer, washable material that keeps away pollen and spores.

Object of the invention

Of the Invention is based on the object, a reusable, Regenerative reusable mouth and nose protection for in particular to develop the private use, which is characterized by a Stability that at least the corresponding cycle or Period of need of wearing mouth and nose protection is characterized, optimal protection against infection with Germination or spread of germs possesses a high carrying and Has comfort of use, is washable and also after washing maintains a safe antibacterial effect.

Of course should the commercial use z. B. in clinics possible be in which the cleaning centrally by thermal disinfection done by boiling or steaming.

Revelation of the inventive idea

The The object is achieved by the features of claim 1. Advantageous developments and Embodiments give the dependent claims at.

According to the invention the protection function and the complex property profile of a multiple usable, regenerative reusable mouth and nose protection with optimal protection and wearing properties through a special multi-layered Construction achieved, with the lowest possible flow resistance all layers, an excellent filter effect of the filter layer and a good air conditioning for the nose-mouth area characteristic are.

Starting from the surface of the face, the protective mask according to the invention has the following layer structure:
A first layer of a moisture-transporting, but not moisture-storing, hydrophilic properties having textile fabrics. Caused by a corresponding thread structure, this first layer has capillary action for moisture transport. It is responsible for a good wearing comfort of the mask, in particular for a tolerable skin contact and a climatic comfort, in that this layer additionally exhibits thermophysiological properties. She is also responsible for ensuring the mechanical stability of the entire construction.

A second layer is characterized by moisture-binding properties out. It has the function of moisture caching and reinforced In addition, the moisture transport effect from the first layer. She guarantees that no moisture in the filter layer (3rd layer) come can.

A third layer is the actual filter layer and is used for filtering both the inhaled air and the exhaled air and thus the deposition the infection germs at the porosity matched to the filter function this textile structure. The pore size is individual depending on the viruses and thus their size selectable, where overall the pore size the aerosol diameter, ie the diameter of the virus bacteria and the diameter of the liquid droplets, can not reach to prevent the passage of viruses. A permanent antibacterial surface functionalization the material to increase the hygienic effectiveness will be effective achieved by means of a chemical treatment, a use of silver-coated and / or silver-containing fabrics or materials or a Use of activated charcoal spray, the latter, however, after each wash should be re-sprayed. in the commercial area, it is also useful to the filter layer to provide with a sensor function known per se, to a timely exchange of these. For example, let a contactless readable / writeable data medium transponder chip for RFID - to identify the completed Usage cycles by a central washing and regeneration company deploy.

According to an advantageous embodiment of the invention, an antibacterial surface functionalization is at least the textile structure of the filter layer 3 to increase the safety function and to extend the cyclic wearing time provided. In one embodiment, this additional ei ne functional substance is proposed with depot effect for the antibacterial surface functionalization.

According to a development of the invention, the filter layer 3 adapted to a deposition of solid particles.

According to a further embodiment, an opening for replacement of the filter layer is in the design layer 3 intended. This is particularly advantageous when the filter layer 3 instead of regeneration, it has to be re-introduced into the filter system for each cycle of use.

optional There is a fourth layer present, although for the mode of action The mouth and nose protection is not absolutely necessary, although they the mechanical stability of the layer structure in addition can increase, but is visually noticeable when wearing and thus can develop a certain aesthetic effect.

In the commercial sector can through an opening the replacement of the filter layer 3 if it needs to be re-introduced into the system for each usage cycle instead of regeneration. But even attaching a title block to identify the completed cycles of use, for example by means of washable pen is possible.

The Connection of the individual layers with each other is different Methods possible, such. B. connecting the layers with each other at the edge. This edge must have a certain tightness, in particular, a double hem, possibly with a provided flexible insert, proven. But also in the hem, double stitched only from the two outer Layers, has proven itself under experimental conditions. It should be noted that the individual layers do not interact be adhered, since thereby the wearing comfort by the occurring Stiffness is restricted. Also attaching additional Seams for fixing the individual layers is only very limited recommended, because through these seams or their seam holes the risk of the occurrence of possible leaks increases.

The Fit to different head and face shapes and sizes is constructive and suitable textile-based fasteners, such as B. achieved by means of inserted wrinkles.

Under the aspect of the widespread use by population and medical staff is in material selection and processing also the economical execution of this reusable product to take into account.

embodiment

Based An embodiment of the invention is intended to be closer to be discribed. In the accompanying drawings shows

1 schematically a section through an applied mouth and nose protection and

2 schematically a plan view of an oral and nose protection.

An inventive mouth and nose protection is in 1 shown in a three-layer structure. Starting from the face of a wearer becomes a hydrophilic, moisture-conducting layer 1 , a moisture-storing layer 2 and a filter layer 3 arranged one behind the other. The moisture-conducting layer 1 exists z. B. of polyamide and ensures an approximately constant dry skin, by deriving sweat from the facial skin and in the intended as a moisture buffer buffered hydrophobic layer 2 passes. The moisture-storing layer 2 consisting of cellulose, but also of a mixture of cotton / viscose fiber, buffers moisture in case of increased seizure between, to prevent wetting of the facial skin. The moisture to be stored here has its origin in the condensation of the humidity of the exhaled air of the wearer. In addition, it must guarantee that no moisture in the filter layer 3 comes, otherwise the risk of transmission of viruses, eg. As influenza viruses, could exist in the environment. This is due to the fact that moisture is a good transport medium, especially for viruses. The filter layer 3 , consisting preferably of a high density multifilament fabric, has the actual filtering function against germinating particles and moisture droplets and is provided with appropriate porosity and filter density to ensure both breathable air passage and germination. An additional textile finishing equipment to increase the germination, for example, by suitable nanoparticles is included.

In order to avoid facial leakage, it is beneficial to the layers 1 - 3 in particular to connect with each other at the edge and to provide the edge of the mouth and nose protection circumferentially with a suitable skin-friendly sealing element.

Optional and in 1 therefore not shown is a design layer that enhances acceptance of the support by design, optionally allows own design or gives expression to the position of the wearer.

In 2 are statements regarding the arrangement of fasteners 5 sketched for the mouth and nose protection. For fit reasons, an H-shaped arrangement with up and down from the filter area 5 outgoing fasteners 6 For example, elastic bands may be preferred to allow for optimal adaptation to different face shapes and sizes and to compensate for oral and jaw movements.

The in the convolutions of the filter area 5 The height of the mouth and nose guard to be accommodated depends on the size of the midline over the nose, mouth and chin of the wearer. Over the cheeks of the wearer reaches the normal height of the rectangle of the filter area.

2 contains several solutions suitable in principle for the convolutions in one or more planes or directions. The dash-lined drawn planar processing of the filter and other sheet material of the mouth and nose protection is not possible for reasons of fit. More material is needed to cover the nose and mouth as well as the chin area of the wearer also in the center of the face.

By suitable folding 4 By the width of the mouth-nose protection, so much material has to be worked into the construction that the face is covered from nose to mouth over the mouth.

In the edge area, the fold is to be included in the band edge and thus fixed in the arrangement. The integration of a circumferential sealing element around the filter area 5 serves to avoid facial leaks as a potential hazard including the geometric adaptation of the mouth and nose protection to the face shape especially for spectacle wearers.

The multilayer arrangement 1 is analogous to implement for each layer of oral and nasal protection.

It It goes without saying that very good dimensional variations for use by adults and children as well as geometric adjustments can be made to different face shapes.

Of the described mouth and nose protection combines optimal protection and Carrying properties for use by the population and the medical staff especially in phases of high risk of infection.

1

feuchteableitende layer

2

feuchtespeichernde layer

3

filter layer

4

various folds

5

filter area

6

fasteners

B

width of the mouth and nose protection

H

height of the mouth and nose protection

L

length the fasteners of the mouth and nose protection

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 202004003089 U1 [0007]
• - US 3620214 A [0008]
• - DE 7600278 U1 [0009]
• - DE 10334175 B4 [0010]
• EP 0398611 A1 [0011]
• - US 5269024A [0012]

Claims (13)

Regenerative multi-layered mouth and nose protection from different textile-structured functional layers, in particular for the protection against viral and / or bacterial infections, characterized by a moisture-dissipating inner layer ( 1 ) to ensure dry facial skin, a moisture-storing intermediate layer ( 2 ) for buffering moisture condensate and facial sweat and an outer filter layer ( 3 ) to repel germ-carrying particles. Mouth and nose protection according to claim 1, characterized by an additional, above the filter layer ( 3 ) lying design layer. Mouth and nose protection according to claim 1 or 2, characterized by an antibacterial surface functionalization of at least the filter layer ( 3 ). Mouth and nose protection according to claim 3, characterized by a functional substance with depot effect for the antibacterial Surface functionalization. Mouth and nose protection according to claim 4, characterized by a filter layer adapted to a separation of solid particles ( 3 ). Mouth and nose protection according to claim 2, characterized by an opening in the design layer for replacing the filter layer ( 3 ). Mouth and nose protection according to claim 6, characterized by an integrated sensor function for signaling a required replacement of the filter layer ( 3 ). Mouth and nose protection according to at least one of the preceding claims, characterized by a folded arrangement of the filter area ( 5 ). Mouth and nose protection according to at least one of the preceding claims, characterized by a fastening system with elastic fastening elements ( 6 ). Mouth and nose protection according to at least one of the preceding claims, characterized by an integration of a circumferential sealing element around the filter area ( 5 ). Mouth and nose protection after at least one of preceding claims, characterized by an integration a writable and readable medium. Mouth and nose protection after at least one of preceding claims, characterized by a geometric Adaptation to the visual field. Mouth and nose protection after at least one of preceding claims, characterized by different Sizes.