Method and manufacturing plant for producing a sequence of respiratory masks

Abstract

Method for automatically producing a sequence of respiratory masks (100), the method comprising the steps of - a reinforcing fabric panel (1.V), - at least one first further fabric panel (1.1) and - at least one second further fabric web (1.2, 1.3, 1.4) is fed to a production plant (10, 20) in this way, - that the reinforcing fabric panel (1.V) is located between the first further fabric panel (1.1) and the second further fabric panel (1.2) and - there is a gap between the reinforcing fabric panel (1.V) and the or each first further fabric panel (1.1) as well as between the reinforcing fabric panel (1.V) and the or each second further fabric panel (1.2, 1.3, 1.4), a reinforcement strand (2) is produced from the reinforcement fabric web (1.V) by cutting it out, the reinforcement strand (2) produced comprising an interconnected sequence (2) of reinforcement pieces, the reinforcement strand (2) is connected to at least two further supplied fabric webs (1.2, 1.3, 1.4) in such a way that - a multi-layer composite strand (5) is produced and - the reinforcing strand (2) is sandwiched between a first further fabric web (1.1) and a second further fabric web (1.2) in the multi-layer composite strand (5), and the sequence of respiratory masks (100) is produced by cutting them out of the multi-layer composite strand (5), that each respirator (100) - each comprises a reinforcement piece (36) from the reinforcement strand (2), a first further piece of fabric (30.a, 31.a, 32.a, 34.a, 35.a) from the or at least one first further fabric web (1.1) and a second further piece of fabric (30.a, 31.i, 32.i, 34.i, 35.i) from the or at least one second further fabric web (1.2, 1.3, 1.4) and - the reinforcing piece (36) is sandwiched between the or a first further piece of fabric (30.a, 31.a, 32.a, 34.a, 35.a) and the or a second further piece of fabric (30.a, 31.i, 32.i, 34.i, 35.i).

Description

The invention relates to a method and a production plant for automatically producing a sequence of respirator masks.A user wears a respirator mask produced according to the invention in front of his face in such a way that the respirator mask covers at least the mouth and the nose of the user. The respirator filters out particles, aerosols and other potentially harmful constituents from the breathing air that the user draws in.DE 199 83 183 B4 shows a disposable mask 11 protecting the face of a wearer. The mask 11 has a base portion 14 with an opening 66, the opening 66 facing the face of a wearer 12, the base portion 14 covering the nose and mouth of the wearer 12 and having a sealing end 38. the opening 66 is defined by an upper edge, a lower edge and two opposing sides. The upper edge extends over the wearer's nose and cheeks. The lower edge extends below the mouth of the wearer. A first portion of the base portion 14 is made of a first material moldable around the face. A second portion of the base portion 14 is adjacent the sealing end 38 and is formed of a second material that is filtering and gas permeable in both directions. The two regions are immediately adjacent to one another.Typically, a sequence of such respirators is produced by a production method using a production facility. Various methods and manufacturing equipment for manufacturing a sequence of respirators have become known.A method and a production plant are described, for example, in WO 2018 / 081 227 A1. Each respirator (face-pie respirator 10) to be produced comprises a reinforcing element (reinforcement element 40) which is arranged between two further layers (outer cover web 32, filtration layer 34) and comprises a reinforcing element for the nose region (nose clip 70). A multilayer composite layer (web assembly 134) is produced from the layers, for example by electrostatic forces, welding or adhesive bonding.The respirator mask, the production of which is described in DE 10 2020 115 472 A1, comprises a first, inner, breathable fabric layer 1, a second, filtering fabric layer 2 and a third, outer, breathable fabric layer 3. This produces a pleated material 5 whose width is less than the width of the second fabric layer 2, and the pleated material 5 is inserted between the first fabric layer 1 and the third fabric layer 3. The three fabric layers 1, 2, 3 are connected to one another.DE 10 2020 122 483 A1 describes a production plant which produces both the mask body 3 and the fixing elements 4 of a face mask 2 in a continuous process. This is referred to as inline production and saves the need to remove fixing elements from an external supplier. The fixation elements include fastening straps 5 and a nose bar 6 per face mask 2.EP 3 177 161 B1 describes a method for cutting and placing individual wires for the nose area in a production facility 106 for face masks. A continuous wire 101 is provided at a cutting station 108. A plurality of driven feed rollers 110 engage the wire 101 and feed the wire 101 to a cutting roller at a first speed S 1. The cutting roller 112 cuts the wire 101 into individual wires for one mask each. A plurality of spreader rollers 116 deposit the wires onto a supporting web 119. The distribution rollers 116 are driven independently of the feed rollers 110 and the cutting roller 112. Therefore, the individual wires are transported away at a speed S 2 that is greater than the first speed S 1. Subsequently, the individual wires are deposited on the supporting fabric web 118 at a third speed S 3, wherein the third speed S 3 is less than the first speed S 1.In the method according to WO 2008 / 085 546 A2, a web of a non-woven layer is provided. The web comprises polymer fibers blended together and has a Cucumbery flexural stiffness of over 200 mg. A crease line is inserted in this web. A mask body is made from the web which causes a pressure drop of less than 20 mm H2O. The mask body can be folded together and unfolded again.The object of the invention is to provide a method and a production facility for producing a sequence of respirator masks, wherein each respirator mask to be produced comprises in each case a reinforcing piece and at least two further pieces of fabric, wherein the reinforcing piece is situated sandwiched between two further pieces of fabric and wherein the method and the production facility are intended to make it easier to bring the reinforcing piece into a desired shape.The object is achieved by a method having the features of claim 1 and by a production plant having the features of claim 4.Advantageous embodiments are specified in the dependent claims. Advantageous embodiments of the method are, insofar as appropriate, also advantageous embodiments of the production plant and vice versa.The method according to the invention and the production facilities according to the invention are capable of automatically producing a sequence of respirators. Each produced respirator mask of this sequence comprises a reinforcement piece, at least one first further piece of fabric and at least one second further piece of fabric. The reinforcement piece is sandwiched between the or a first further piece of fabric and the or a second further piece of fabric. The term "substance" denotes any material which is suitable for filtering out particles from a stream of a gas which flows perpendicularly or obliquely through this substance and which is furthermore sufficiently flexible and therefore suitable for bearing against the face of a person. The two further pieces of fabric and the reinforcing piece are each produced from such a fabric. The at least three pieces of fabric may be made of the same fabric or of at least two different fabrics.The method according to the invention is carried out using a production plant according to the invention. The method according to the invention comprises the following steps, and the production plant according to the invention is configured to carry out the following steps:At least the following webs of material are fed to the production plant:a reinforcing fabric web,at least one first further fabric web; andat least one second further fabric web.During this feeding, the reinforcing fabric web is located between the or a first further fabric web and the or a second further fabric web. When feeding the at least three webs of fabric, a distance occurs between the reinforcing web of fabric and the or each first further web of fabric. In addition, a distance also occurs between the reinforcing fabric web and the or each second further fabric web. The reinforcing fabric web can be located with the same spacing or with two different spacings between two further fabric webs.A reinforcing strand is produced from the reinforcing fabric web by cutting at least one region out of the reinforcing fabric web. This reinforcement strand comprises a sequence of reinforcement pieces, namely one reinforcement piece per respirator mask. The reinforcing pieces of the sequence are still mechanically connected to one another. In the process of cutting out at least one region, there remains a distance between the reinforcement panel and each further panel.The reinforcing strand is mechanically connected to the or at least one first and the or at least one second further fed fabric web, preferably to all further fed fabric webs. Preferably, at least one material connection is produced, for example by laser welding or cold welding or by adhesive bonding or sewing or by a combination of at least two of these techniques. This joining produces a multilayer composite strand. In this multilayer composite strand, the reinforcing strand is sandwiched between the or a first further fabric web and the or a second further fabric web.The sequence of respirators is created by cutting or otherwise separating the respirators from the composite strand.According to the invention, the at least three fabric webs are supplied in such a way that the reinforcing fabric web is located at a distance between two further fabric webs in each case. This feature facilitates guiding and moving each individual web. Thanks to these spacings, it is easier to produce the reinforcing strand by cutting it out of the reinforcing fabric web. A cutting tool can be moved from both sides towards the reinforcing fabric web and clamp the reinforcing fabric web between them.Furthermore, the feature with the two spacings makes it possible to apply a further element of the respirator mask, for example a nose clip or a filter, or a liquid substance, for example for disinfecting or impregnating or reinforcing, to the one surface of the reinforcing fabric web. The reinforcing fabric web can be held and / or supported from the other surface while the further elements are being applied.According to the invention, a multilayer composite strand is produced by connecting the reinforcing strand to at least two further fabric webs. The reinforcement string is created before the individual respirator masks are created by cutting them out. This feature often results in mechanically more stable respirators than another approach. This facilitates cutting the respirators out of the reinforcement string. The risk is less that the actual shape of a respirator mask deviates considerably from a desired shape. In addition, in many cases it is not necessary to hold a single respirator during production and then trim it.In order to produce the multilayer composite strand, if a first and a second further fabric web are used, according to the invention only three fabric webs need to be connected to one another. In conventional production methods, instead of only one further fabric web each, a nose portion, a mouth portion and a chin portion must frequently be connected to a reinforcement piece from the inside and from the outside, which frequently means that five fabric pieces must be connected to one another. The terms "inner" and "outer" refer to a position in which the respirator mask bears against the face of a wearer.According to the invention, a multilayer composite strand is produced by connecting the reinforcing strand to at least two further fabric webs. A preferred embodiment for producing this composite strand comprises the following steps:A space is established between the or each first further fabric web and that surface of the reinforcing strand which points towards the first further fabric web. Preferably, the opposite surface of the reinforcing strand is supported. It is possible that a distance also occurs between the or each second further fabric web. It is also possible for a second further fabric web to be brought into contact with the opposite surface of the reinforcing strand.A sequence of further reinforcing elements is applied to the surface of the reinforcing strand pointing toward the first further fabric web, namely at least one reinforcing element per respirator mask to be produced. Optionally, the sequence of further reinforcing elements is connected to the reinforcing strand in a materially integral manner. The or a reinforcing element is, for example, a nose clip or a nose strap. It is possible for at least two reinforcing elements to be applied per respirator mask to be produced. The step of applying the sequence of further reinforcing elements is possible because a distance occurs between the surface facing the first further fabric web and the or each first further fabric web.Subsequently, the surface to which the sequence of further reinforcing elements has been applied is brought into contact with the or at least one first further fabric web. Optionally, this first further fabric web is now connected to the reinforcing fabric web in a materially integral manner. The sequence of further reinforcing elements is now sandwiched between the reinforcing strand and this first further fabric web. As a result, the sequence of further reinforcing elements is held in its position and can no longer move to any appreciable extent relative to the reinforcing fabric web or a further fabric web.An advantage of an embodiment of this embodiment is the following: When the further reinforcing elements are brought onto the surface pointing towards the first further fabric web, the reinforcing fabric web is already in contact with the second further fabric web. This supports the reinforcing fabric web, which facilitates the application of the further reinforcing elements. However, owing to this configuration, it is possible in many cases not necessary to connect the sequence of further reinforcing elements to a fabric web in a materially integral mannerThe invention is described below with reference to an exemplary embodiment. This shows FIG. 1 shows a folded-out respirator mask; FIG. 2 is a sectional view taken along line II--II of FIG. 1 of a respirator mask manufactured in a conventional manner; FIG. 3 is a plane II-II of FIG. 1 showing a respirator mask made in accordance with the present invention; FIG. 4 shows the one-piece reinforcing layer of a respirator mask produced according to the invention; FIG. 5 is a lateral view of how five webs of material are fed one above the other to a first manufacturing station and are processed there; FIG. 6 is a perspective view of how a second manufacturing station processes the material web and a material web from the first manufacturing station.In the exemplary embodiment, the method according to the invention is used to produce a sequence of respirator masks, each respirator mask comprising a reinforcing layer and a plurality of further layers. The reinforcing layer is situated in the manner of a sandwich between at least two further layers and is referred to below as a "reinforcing piece". Of course, more than two further layers are also possible.A user (hereinafter "a carrier") can attach this respirator mask in front of the mouth and nose in order to reduce the exchange of harmful aerosols and other particles between his body, in particular his breathing system, and the environment. As a rule, the respirator also covers a part of the chin. The terms "outer", "inner", "top" and "bottom" refer to the respirator mask resting against the wearer's face.FIG. 1 shows a folded-out respirator mask 100. The viewing direction of FIG. 1 is the viewing direction B of a wearer wearing this respirator 100 in front of his nose, mouth and child. The harness 8 holding the respirator mask 100 to the head of the wearer is shown only schematically. The illustration of FIG. 1 is not necessarily to scale.The respirator 100 comprisesa mouth portion 30 in front of the mouth of the wearer,a nose portion 31 in front of the nose of the wearer,a chin portion 32 in front of the chin of the wearer, anda nose clip 33 which can adapt to the outer contour of the wearer's nose and functions as a further reinforcing element.An upper flap 34 connects the nose portion 31 to the mouth portion 30, a lower flap 35 connects the chin portion 32 to the mouth portion 30, and an upper weld S.o and a lower weld S.u hold the three portions 30, 31 and 32 together. The nose clip 33 is applied to the nose portion 31 in a materially integral manner on the inside and near the upper edge.The three parts 30, 31 and 32 each comprise an outer layer and an inner layer. The inner layers face the carrier, the outer layers face away from the carrier. The mouth portion 30 additionally includes a reinforcing layer disposed between the outer layer and the inner layer of the mouth portion 30.FIGS. 2 and 3 show a section through the respirator mask 100 in the plane II-II of FIG. 1. In this case, FIG. 2 shows a respirator mask 100 produced using a conventional method, and FIG. 3 shows a respirator mask 100 produced using the method according to the invention and using the production plant according to the invention. The illustration of FIG. 1 relates both to a respirator mask 100 produced conventionally and also to a mask produced according to the invention.As seen in Figs. 2 and 3, the mouth part 30 comprises an inner layer 30.i, a reinforcing layer 30.v and an outer layer 30.a. The nose portion 31 comprises an inner layer 31.i and an outer layer 31.a. Chin portion 32 comprises an inner layer 32.i and an outer layer 32.a. The upper flap 34 comprises an inner layer 34.i, a reinforcing layer 34.v and an outer layer 34.a. The lower flap 35 comprises an inner layer 35.i, a reinforcing layer 35.v and an outer layer 35.a. The distances between the layers are exaggerated.In the embodiment according to FIG. 2, the inner layers 34.i and 35.i are connected in advance to the inner layer 30.i, the outer layers 34.a and 35.a are connected in advance to the outer layer 30.a. In addition, the reinforcing layers 30.v and 35.v are bonded to the reinforcing layer 30.v in advance. The upper weld seam S.o connects five layers to one another, namely (from the inside outwards) the layer 30.i+34.i, the layer 31.i, the layer 30.v+34.v, the layer 31.a and the layer 30.a+34.a. The lower weld seam S.u also connects five layers to one another, namely (from the inside outwards) the layer 30.i+35.i, the layer 32.i, the layer 30.v+35.v, the layer 32.a and the layer 30.a+35.a. The respirator mask 100 can have further welded seams, which are not shown.The embodiment according to FIG. 3 has the following differences from the embodiment according to FIG. 2: The respirator mask 100 has a single inner layer 30.i, 31.i, 32.i, which is produced from a single material web. Moreover, the respirator mask 100 has a single outer layer 30.a, 31.a, 32.a, which is produced from a single material web. The reinforcing layer 30.v, 34.v, 35.v is also produced from a single material web.The reinforcing layer 30.v, 34.v, 35.v is arranged in the manner of a sandwich between the inner layer 30.i, 31.i, 32.i and the outer layer 30.a, 31.a, 32.a. The upper weld seam S.o and the lower weld seam S.u connect these three continuous layers to one another. In contrast to the embodiment according to FIG. 2, the two welded seams in the embodiment according to FIG. 3 thus connect three layers to one another instead of five layers each. This increases stability. The risk of a connection becoming leaky is lower.FIG. 4 shows the one-piece reinforcement piece 36 from the same viewing direction as FIG. 1, which reinforcement piece 36 comprisesa segment 30.v belonging to the mouth part 30,a segment 34.v belonging to the upper tab 34, anda segment 35.v which belongs to the lower tab 35.The method according to the invention and the production plant according to the invention are described below with reference to FIGS. 5 and 6. Each respirator mask 100 produced according to the invention comprises in this example in each case two inner layers, a reinforcing layer and an outer layer.FIG. 5 schematically shows how five webs of fabric are fed to a first manufacturing station 10 with a frame 14, namely a reinforcing web of fabric 1.V and four further webs of fabric 1.1 to 1.4. In this embodiment, each respirator mask 100 to be produced comprises five layers lying one above the other, wherein the reinforcing layer is arranged between one piece of fabric from the fabric web 1.1 on the one hand and three pieces of fabric from the fabric webs 1.2, 1.3, 1.4 on the other hand. FIG. 5 shows the first production station 10 from a lateral viewing direction, i.e. the five webs of material are conveyed from left to right, namely in each case in a conveying direction which lies in the planes of the drawing. FIGS. 5 and 6 also show guide rollers 24.1, 24.2,... for one respective fabric web 1.1,..., 1.4, 1.V and a guide plate between two fabric webs.The reinforcing pieces 36 of the respirators are produced from the reinforcing fabric web 1.V, and the four further layers are produced from the four further fabric webs 1.1 to 1.4. The fabric webs 1.1,..., 1.4, 1.V are, for example, each drawn off from a respective roll. During feeding, the five fabric webs 1.1,..., 1.4, 1.V are arranged horizontally and one above the other in a sequence such that a distance occurs in each case between two adjacent fabric webs.The first manufacturing station 10 comprises the following components:a punching system (prefilter cutting station) 11 having a cutting roller and a counter roller, anda first roller unit 15 having two rollers.The reinforcement fabric web 1.V is guided between the cutting roller and the counter roller of the punching installation 11. The cutting roller 12 (arranged at the top in the example shown) comprises a cutting contour. The cutting contour of the cutting roller cuts into the reinforcing fabric web 1.V the outer contour of the reinforcing layers. Here, it performs punching and rotary cutting. As a result, the punching installation 11 produces a reinforcing strand 2.The uppermost further web of material 1.1 is guided past the top of the punching installation 11 without being processed by the punching installation 11. The three further webs of material 1.2, 1.3, 1.4 are guided past the punching installation 11 at the bottom without being processed by the punching installation 11. The further web of fabric 1.2 is guided by a guide roller and optionally deflected.The three still unprocessed further fabric webs 1.2, 1.3, 1.4 and the reinforcing strand 2 are put together. This produces a material strand 3 of four webs, namely (from top to bottom) of the reinforcing strand 2 and the three further fabric webs 1.2, 1.3, 1.4. The upward facing surface of the reinforcing strand 2 is therefore not covered by another fabric web. In order to produce the material strand 3, the four material webs 2, 1.2, 1.3, 1.4 are fed to the first roller unit 15 and are guided through between the two rollers of the first roller unit 15. The four fabric webs 2, 1.2, 1.3, 1.4 are preferably not yet connected to one another.In a next step, which is not shown, a respective nose clip 33 per respirator mask is applied from above to the material strand 3, i.e. to the upward-pointing surface of the reinforcement strand 2, and fastened. As a result, a material strand 4 with nose clips 33 is produced. The nose clip 33 is moved towards the fabric webs 1.2, 1.3, 1.4.A second production station 20 now merges this material strand 4, on which the nose clips 33 are applied, with the uppermost fabric web 1.1. FIG. 6 shows the second production station 20 in a perspective illustration. The second manufacturing station 20 comprises a stand 21 and a second roller unit 25 with two rollers. The second roller unit 25 produces a material strand 5 with five webs from the material strand 4 with the nose clips 33 and the uppermost further web of fabric 1.1. For this purpose, the material strand 4 and the uppermost further web 1.1 are passed between the two rollers of the second roller unit 25. The material strand 5 produced in this way preferably has a width between 220 mm and 260 mm.The five webs of the material strand 5 are placed one above the other but are not yet connected to one another. The second production station 20 comprises a welding station 22, and the material strand 5 is fed to this welding station 22 and held from below by a counter roller. This welding station 22 welds the five webs of the material strand 5 to one another or connects them to one another in another manner in a materially integral manner, for example by adhesive bonding or sewing or gluing. As a result, the welding station 22 generates a material strand 6 from the material strand 5, wherein the material strand 6 comprises five webs connected to one another in a materially bonded manner.In subsequent steps, the respective outer contour of each respirator mask 100 is produced from this material strand 6 by cutting. The respirator masks 100 are folded and separated from one another and preferably individually packaged in a respective wrapper. A respirator mask 100 produced according to the invention preferably has a shape as shown in FIGS. 1 and 3.List of reference characters1.1 The uppermost further fabric web, functions as a first further fabric web, is further fabric webs when feeding above the reinforcing fabric web 1.V 1.2, 1.3, 1.4, function as a respective second further fabric web, is 2 reinforcing strand when feeding below the reinforcing fabric web 1.V 1.V reinforcing fabric web, arranged sandwiched between the fabric webs 1.1 and 1.2, 3 material strand produced by the punching system 11 from the reinforcing fabric web 1.V comprises the fabric webs 1.2, 1.3, 1.4 and the reinforcing web 2 4 material strand with one nose clip 33 per respirator mask 100, is produced by applying the nose clips 33 to the material strand 3 5 material strand with five webs, is produced, By placing the uppermost further fabric web 1.1 on the fabric web 4, 6 fabric web with five webs which are connected to one another in a materially integral manner, 8 changes are produced in the welding station 22 from the fabric web 5, which holds the respirator mask 100 on the head of the wearer 10 first production station, comprises the punching system 11 and the first roller unit 15 11 punching system (prefilter cutting station), comprises a cutting roller and a counter roller, cuts into the reinforcing fabric web 1.V the outer contour of the reinforcing layers a 14 frame of the first production station 10 15 first roller unit, comprises two rollers, sets the four fabric webs 2, 1.2, 1.3, 1.4 to the fabric web 3 together 20 second production station, comprises the frame 21, the second roller unit 25 and the welding station 22 21 frame of the second production station 20, respectively, The layer of material 30 is arranged to monitor the course of the uppermost further web of material 1.1 22 welding station of the second production station 20, connects the five webs of the web of material 5 to one another in a materially integral manner and thereby generates the strand of material 6 24.1, 24.2, guide roller for a web of material 25 second roller unit, comprises two rollers, sets the strand of material 4 and the uppermost further web of material 1.1 to form the strand of material 5 together 30 mouth portion of the respirator mask 100, comprises the layers 30.i, 30.v and 30.a 30.a outer layer of the mouth portion 30 30.i inner layer of the mouth portion 30 30.v reinforcing layer of the mouth portion 30 31 nose portion of the respirator mask 100, comprises the layers 31.i, 31.v and 31.a 31.a outer layer of the nose portion 31.i inner layer of the nose portion 31.v reinforcing layer of the nose portion 31, 32 chin portion of the respirator mask 100 arranged between the layers 31.i and 31.a 32.chin portion of the respirator mask 32.a outer layer of the chin portion 32.i inner layer of the chin portion 32.v reinforcing layer of the chin portion 32, 34 upper flap arranged between the layers 32.i and 32.a 33 nose clip of the respirator mask 100 applied internally to the nose portion 31, connects the nose portion 31 to the mouth portion 30, comprises the layers 34.i, 34.v and 34.a 34.a outer layer of the upper flap 34.i inner layer of the upper flap 34.v reinforcing layer of the upper flap 34, 34.v reinforcing layer of the upper flap 34, The layer of the mask 100 is joined to the upper weld seam of the mask 100 between the layers 34.i and 34.a arranged 35 lower flap, connects the chin portion 32 to the mouth portion 30, comprises the layers 35.i, 35.v and 35.a 35.a outer layer of the upper flap 35 35.i inner layer of the upper flap 35 35.v reinforcing layer of the lower flap 35 arranged between the layers 35.i and 35.a 36 one-piece reinforcing piece, comprises the layers 30.v, 34.v, 35.v 100 respirator mask, comprises the mouth portion 30, the nose portion 31, the chin portion 32, the flaps 34 and 35, the harness 8 and the nose clip 33B viewing direction of a wearer of the respirator mask 100 S.o upper weld seam of the respirator mask 100, The weld joint between the nose portion 31 and the chin portion 32 and the mouth portion 30 connects the lower weld joint of the respirator 100, the nose portion 31 and the chin portion 32 connects to the mouth portion 30

Claims

Method for automatically producing a sequence of respirators (100), wherein the method comprises the steps of - feeding a reinforcing fabric web (1.V), - at least one first further fabric web (1.1) and - at least one second further fabric web (1.2, 1.3, 1.4) to a production plant (10, 20) in such a way that the reinforcing fabric web (1.V) is located between the or a first further fabric web (1.1) and the or a second further fabric web (1.2), and - a distance occurs in each case both between the reinforcing fabric web (1.V) and the or each first further fabric web (1.1) and between the reinforcing fabric web (1.V) and the or each second further fabric web (1.2, 1.3, 1.4), from the reinforcement fabric web (1.V) a reinforcement strand (2) is produced by cutting out, wherein the produced reinforcement strand (2) comprises a sequence (2) of reinforcement pieces connected to one another, the reinforcement strand (2) is connected to at least two further supplied fabric webs (1.2, 1.3, 1.4) in such a way that - a multilayer composite strand (5) is produced and - the reinforcement strand (2) is situated in the multilayer composite strand (5) in a sandwich-like manner between a first further fabric web (1.1) and a second further fabric web (1.2), and the sequence of respirator masks (100) is produced by cutting out from the multilayer composite strand (5) in such a way that each respirator mask (100) - in each case a reinforcement piece (36) from the reinforcement strand (2), a first further piece of fabric (30.a, 31.a, 32.a, 34.a, 35.a) from the or at least one first further piece of fabric (1.1) and a second further piece of fabric (30.a, 31.i, 32.i, 34.i, 35.i) from the or at least one second further piece of fabric (1.2, 1.3, 1.4) and - the reinforcing piece (36) is situated sandwiched between the or a first further piece of fabric (30.a, 31.a, 32.a, 34.a, 35.a) and the or a second further piece of fabric (30.a, 31.i, 32.i, 34.i, 35.i).Method according to claim 1, characterized in that the step of producing the multi-layer composite strand (5) comprises the steps of bringing a surface of the reinforcement strand (2) into contact with the or a second further fabric web (1.2) while a distance occurs between the reinforcement strand (2) and the or each first further fabric web (1.1), respectively, applying a sequence of further reinforcement elements (33) to the opposite surface of the reinforcement strand (2) and subsequently bringing the opposite surface into contact with the or at least one first further fabric web (1.1), so that the sequence of further reinforcement elements (33) is sandwiched between the reinforcement strand (2) and the first further fabric web (1.1).Method according to claim 2, characterised in thata respective reinforcing element (33) per respirator mask (100) is applied to the opposite surface, in particular a respective reinforcing element (33) for the nose region.Production plant (10, 20) for producing a sequence of respirators (100), wherein the production plant (10, 20) comprises - a punching plant (11), - a conveying unit (15, 25) for moving webs of material (1.V, 1.1 to 1.4) and - a joining unit, wherein the production plant (10, 20) is configured to move - a reinforcing web of material (1.V), - at least one first further web of material (1.1) and - at least one second further web of material (1.2, 1.3, 1.4) in such a way to the punching unit (11) using the conveying unit (15, 25), that - the reinforcing fabric web (1.V) is located between the or a first further fabric web (1.1) and the or a second further fabric web (1.2), and - a respective spacing occurs both between the reinforcing fabric web (1.V) and the or each first further fabric web (1.1) and between the reinforcing fabric web (1.V) and the or each second further fabric web (1.2, 1.3, 1.4), wherein the punching installation (11) is configured to produce a reinforcing strand (2) from the reinforcing fabric web (1.V) by cutting it out, wherein the produced reinforcing strand (2) comprises a sequence (2) of reinforcing pieces (36) connected to one another, wherein the joining unit is configured to produce the reinforcing strand (2) in such a way with at least two supplied further fabric webs (1.2, 1.3, 1.4) to connect that - a multilayer composite strand (5) is produced and - the reinforcing strand (2) is sandwiched between a first further fabric web (1.1) and a second further fabric web (1.2) in the multilayer composite strand (5), and wherein the punching system (11) is configured to produce the sequence of respirator masks (100) by cutting it out of the multilayer composite strand (5) in such a way that each respirator mask (100) - in each case a reinforcing piece (36) from the reinforcing strand (2), a first further fabric piece (30.a, 31.a, 32.a, 34.a, 35.a) from the or a first further fabric web (1.1) and a second further fabric piece (30.a, 31.i, 32.i, 34.i, 35.i) made of the or a second further fabric web (1.2, 1.3, 1.4) and - the reinforcing piece (36) is situated in a sandwich-like manner between the or a first further fabric piece (30.a, 31.a, 32.a, 34.a, 35.a) and the or a second further fabric piece (30.a, 31.i, 32.i, 34.i, 35.i).

Images