EP3895763A1 - Procédé de fabrication de masques de protection ainsi que masques de protection - Google Patents

Procédé de fabrication de masques de protection ainsi que masques de protection Download PDF

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Publication number
EP3895763A1
EP3895763A1 EP20170125.7A EP20170125A EP3895763A1 EP 3895763 A1 EP3895763 A1 EP 3895763A1 EP 20170125 A EP20170125 A EP 20170125A EP 3895763 A1 EP3895763 A1 EP 3895763A1
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EP
European Patent Office
Prior art keywords
distance
tape
cutting
protective
filter material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20170125.7A
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German (de)
English (en)
Inventor
Albrecht Ehrmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyga Ag
Original Assignee
Hyga Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hyga Ag filed Critical Hyga Ag
Priority to EP20170125.7A priority Critical patent/EP3895763A1/fr
Publication of EP3895763A1 publication Critical patent/EP3895763A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres

Definitions

  • the invention relates to a method for producing protective masks, in particular mouth and nose protective masks or respiratory protective masks, which allows protective masks to be produced continuously.
  • the present invention also relates to protective masks.
  • Oral and nose protective masks known from the prior art consist of a rectangular piece of a multilayered fleece, elastic straps being attached to the short edges with which the oral and nose protective masks can be fastened to the ears or around the head of a person . Furthermore, such masks can also have a wire bracket with which the shape of the masks can be adapted over the nose.
  • the fleece pieces can be produced in a continuous process, the attachment of the elastic bands and the insertion of a wire clip per mask are carried out individually, each mask having to be partially rotated or turned for this purpose. In some cases, the elastic straps and the wire hangers are also attached by hand. As a result, the efficiency in the production of the masks is reduced overall.
  • respiratory masks for example of the filter class FFP2 or FFP3, in which additional filter elements have to be incorporated into the fleece pieces as well as shells that are used for shaping.
  • the object of the invention is to create a method belonging to the technical field mentioned at the beginning, with which protective masks can be manufactured continuously at a high production speed.
  • the method according to the invention is intended to enable cost-effective production of masks.
  • the method for producing protective masks comprises, in a first step, the presentation of a tape of at least one filter material, in particular paper or fleece.
  • the filter material is turned over onto a first surface of the belt along its two long sides, each over a first distance to form two lateral flaps.
  • the two lateral tabs are then fixed at least in points on the first surface of the band.
  • the tape is cut into parts with a first length by means of a cutting and embossing step in order to obtain protective masks.
  • means for fastening the protective masks on a face of a person are connected to the at least one filter material or introduced into it. All steps in the process are continuous.
  • All process steps can be carried out in a continuous process, since the band of filter material does not have to be rotated or turned. In addition, all steps can be carried out one after the other at separate stations in a corresponding manufacturing facility. This enables a high throughput to be achieved.
  • the method according to the invention can be carried out on existing manufacturing plants for hygiene articles such as diapers, sanitary napkins and incontinence pads, these manufacturing plants only having to be adapted slightly.
  • the method according to the invention is preferably used for the production of protective face masks.
  • Oral and nose protective masks are also called hygiene masks or surgical masks.
  • mouth and nose protective masks are pulled over the lower half of the face so that they at least cover the nose and mouth of the person wearing the mask.
  • Mouth and nose protective masks prevent the escape of aerosol particles, which can contain pathogens and which can arise when speaking or coughing, so that people in the vicinity of the person wearing the mask are protected from droplet infection.
  • face-to-face masks protect the mask wearer from splashes of body secretions, contaminated liquids or other particles in the air and from touching the mouth and nose with contaminated hands.
  • the method according to the invention is alternatively preferably used for the production of respiratory half masks, a material with particle filtering properties, in particular a fleece, being used as the filter material, so that it protects the mask wearer from inhaling aerosols and particles.
  • Half masks enclose the mask wearer's mouth and nose.
  • they are assigned to one of three protection classes (FFP-1, FFP-2 or FFP-3), for example according to the EN 149: 2001 standard, whereby the assignment to a class is essentially based on the material properties and depends on the total leakage of the mask.
  • Breathing protection half masks with protection class FFP-1 or FFP-2 are preferably produced with the method according to the invention. Alternatively, however, protective masks that do not fall into a specific protection category can also be produced.
  • the band of filter material is preferably presented in the form of at least one roll, the band being continuously processed by being advanced in a manufacturing plant.
  • Suitable manufacturing plants therefore have means for unrolling of the strip and for advancing it through the manufacturing plant, for example in the form of rollers and / or cylinders.
  • the production plant has a plurality of individual stations which each carry out at least one step of the method while the strip is moved through the production plant at a predefined feed rate.
  • the individual stations are accordingly arranged one behind the other in the direction of feed of the strip in the sense of a production line.
  • the individual stations have appropriate means to carry out the at least one process step, for example cutting embossing rollers, cutting rollers, embossing rollers, applicators for adhesive, etc.
  • the production plant preferably has means with which the tape can be conveyed at the feed speed, for example at least one Pair of rollers between which the tape is drawn.
  • the production plant preferably has means with which further elements of the protective masks can be continuously fed to the belt, for example means for attaching the protective masks to a person's face.
  • the band of at least one filter material preferably has several layers of filter material. These are preferably layers of the same filter material. However, the tape can also have layers of different filter materials which are placed on top of one another. If the band has several layers of filter material, the layers are preferably firmly connected to one another. If there are several layers, individual layers cannot be formed over the entire surface, that is to say they cannot extend over the full length and / or width of the tape.
  • a layer can, for example, only be in the form of a strip which extends along the entire length of the band or rectangular part, but only over a defined section of its width. Alternatively, however, a tape can also be used which has only one layer of filter material.
  • the band preferably has a predefined width which, in particular, is constant over the entire length of the band.
  • band of filter material is presented for the method according to the invention.
  • the two and more can Bands of filter material are placed one on top of the other in such a way that the filter material of all the bands comes to lie one on top of the other.
  • a single band of several layers of different filter materials can be formed from bands with different filter materials.
  • Each of the tapes or the layers lying on top of one another can have one layer or also several layers of filter material.
  • Nonwoven is also referred to as nonwoven and is a structure of fibers of limited length, filaments or cut yarns that are joined together without crossing or intertwining, as is the case, for example, with weaving, knitting or braiding.
  • Nonwovens suitable for the process can consist of fibers, filaments or yarns made from materials of natural or synthetic origin.
  • nonwovens made of natural or synthetic polymers such as viscose nonwovens or nonwovens made of a polyester, made of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene (PP), polyamide (PA), polyethylene (PE) or aramid are particularly suitable.
  • a nonwoven made of polypropylene is particularly preferably used as the filter material.
  • a fleece is used as the filter material, it can be in the form of an oriented fleece, a cross-layer fleece or a random-layer fleece.
  • the layers of fleece can be made of the same material, but with different fiber orientation, different pore sizes or different fiber lengths.
  • the at least one filter material After being turned over, the at least one filter material is guided twice along the two long sides of the belt. This means that there is twice the thickness of the at least one filter material in the area of the longitudinal edges of the belt. At the same time, the extent of the band across its long sides is reduced by twice the amount of the first distance.
  • a fold line is created on both sides of the tape, these two fold lines preferably being pressed on by means of at least one roller, so that the two lateral folds formed by the fold The tabs remain in place with the first surface of the band even without further attachment of the same, which means that the two tabs do not fold back into their original position by themselves.
  • the first surface of the tape is preferably that surface which, after completion of the protective masks, faces a wearer of a mask.
  • the turning of the at least one filter material to form the two lateral flaps is preferably carried out continuously, like all steps of the method according to the invention.
  • a corresponding folding station is arranged with which the at least one filter material can be turned over on both sides of the belt while the belt is conveyed through the folding station at the feed speed.
  • folding stations are known to a person skilled in the art.
  • the two tabs are fixed at least point by point on the first surface of the tape by means of a suitable method.
  • the tabs are preferably fixed point by point on the first surface of the tape by means of welding, gluing, embossing or heat sealing.
  • Point-by-point fixing within the meaning of the present application means that the two tabs are not fixed over the entire length of the tape with the first surface, but only at individual points or along individual lines. In some preferred embodiments, however, the two tabs are affixed to the first surface of the tape along the entire length of the tape.
  • the first length corresponds to the width of a protective mask.
  • the first length and thus the width of the protective masks can vary. For example, if protective masks are made for children, the first length will be smaller than if protective masks are made for adults.
  • protective masks with different widths can also be produced, so that a suitable mask width is available for each head shape.
  • the width of the protective masks is defined by the width of the tape minus twice the amount of the first distance.
  • the width of the protective masks can therefore be adjusted by varying the first distance or by using a tape with a different width.
  • the band By means of the cut embossing, the band can be cut into parts on the one hand, and layers of the at least one filter material can be fixed to one another by the embossing on the other hand.
  • the step of cutting embossing is preferably carried out by a cutting embossing roller, with which this step can be carried out in a continuous process.
  • the step of cutting embossing can also be carried out in two successive individual sub-steps, with the band first being cut and then embossed on both sides along the cutting edge, or with the band first being embossed over its entire width and then cut within this embossing.
  • the partial steps can be carried out continuously by arranging an embossing roller and a cutting roller (or vice versa) one after the other.
  • the division into sub-steps has advantages in terms of production technology, in particular since additional process steps can also be inserted between the sub-steps.
  • the individual protective masks are available.
  • the at least one filter material is preferably provided with means before or after the cutting embossing with which the protective masks can be attached to the head or to the ears of people after they have been completed.
  • the steps of the method take place continuously, that is, without interruption between the individual steps and without interruption during the individual steps. As a result, a very large number of protective masks can be produced in a short time. Accordingly, all steps of the method take place as a linear process, with the strip running through different processing stations of a manufacturing plant one after the other without interruption.
  • At least one thread or at least one strip of an elastic material at a second distance the is greater than the first distance, but less than twice the first distance, placed along the two long sides on the first surface of the tape and fixed with this.
  • the fixing takes place in particular by gluing or ultrasonic welding.
  • the at least one thread or the at least one strip of the elastic material is located on both sides between the first surface and the respective tab.
  • the at least one filter material can be given a certain elasticity, so that the protective masks adapt better to the facial contours of the wearer when they are worn.
  • An elastomer such as a rubber, an elastomeric polyurethane, polyisobutylene or polyvinyl butyral is preferably used as the elastic material.
  • the at least one thread or strip of the elastic material is preferably fixed to the first surface of the tape with a hot melt adhesive.
  • the two tabs are preferably also fixed on the first surface with the same hot-melt adhesive.
  • the at least one thread or strip of the elastic material is arranged along the longitudinal sides of the tape, it is laid along the entire length of the tape. When cutting embossing, the at least one thread or strip of the elastic material is accordingly also cut.
  • the at least one thread or strip of the elastic material is preferably fed onto the belt by means of at least one roller.
  • the strip of elastic material can be produced by the same production facility that is used to produce the protective masks.
  • the strip is preferably produced by continuously inserting elastic threads between two layers of a fleece or textile.
  • the at least one thread or the at least one strip of the elastic material is preferably placed in a stretched state on the first surface of the tape, in particular with an elongation of 200% or more, preferably of 300% compared to its relaxed state.
  • the at least one thread or strip of the elastic material is placed on the first surface under a pretension.
  • the fixation of the same takes place under this pretension, so that the edges of the protective masks contract after the step of cutting embossing.
  • the elastic threads or straps on both long sides of the protective mask are stretched again, so that the face mask fits particularly well against the facial contour of the wearer. As a result, the tightness, security against slipping and the wearing comfort of the protective masks can be increased.
  • the at least one thread or the at least one strip of the elastic material is preferably fixed continuously to the first surface over the entire length of the tape.
  • the at least one thread or the at least one strip of the elastic material can only be fixed in partial areas on the first surface. These partial areas are preferably located on the first surface in such a way that they come to lie essentially in the center of each part after the cutting embossing. If the cut embossing now takes place in two sub-steps, wherein in a first sub-step the tape is first cut and is embossed in a second sub-step, the at least one thread or strip of elastic material is severed by the cutting.
  • the at least one thread or strip of elastic material Since the at least one thread or strip of elastic material is not fixed to the first surface, it will snap back due to the pretension, with the exception of the partial area in which the at least one thread or strip of elastic material is fixed to the first surface. This gives the protective masks elastic properties in the partial area in which the at least one thread or strip of elastic material is fixed to the first surface, while the remaining area of the protective masks is not elastic.
  • the two side flaps are connected to both the first surface of the tape and to the at least one thread or the at least one strip of the elastic material fixed over its entire length. This fixation takes place in particular by gluing, preferably with a hot melt adhesive.
  • the band is preferably folded at least once along the longitudinal direction before the cutting embossing, so that the tabs lie on top of one another.
  • the embossing in the cutting embossing step fixes the short sides of the parts in the folded state.
  • a protective mask is unfolded, a hollow is created in the area of the two short sides, which can be pulled over a person's ear in order to attach the protective mask to the person's face.
  • the protective mask therefore forms a kind of hood that can be pulled over the mouth, nose and both ears.
  • the protective mask can thus be easily and reliably attached to the face without further aids such as elastic straps or the like.
  • the short sides are those sides of the protective masks that were created by the cut embossing. These are therefore at a right angle to the long sides. Both short sides are preferably folded several times, in particular in the manner of a bellows. After unfolding the protective masks, the short sides are in a ruffled state.
  • slots in particular transversely to the longitudinal direction of the tape, or punchings are cut into the tape, in particular by means of a cutting roller, the slots or punchings being arranged on the tape in such a way that after the cutting of the Tape comes to lie in each of the parts with a slot or a cutout at a third distance from the respective short side of the parts.
  • the third distance is chosen so that the material remaining between the short sides of the protective masks produced by the cutting embossing and the slots or punched-out areas is strong enough so that it does not tear when the protective mask is hung on the ears of a wearer.
  • the two slots or punchings have a length transversely to the longitudinal direction of the tape which is less than the width of the tape minus twice the amount of the first distance, or less than the extent of the tape transversely to the longitudinal sides between the two fold lines.
  • the length of the slits transversely to the longitudinal direction of the tape is preferably up to 80% of the extent of the tape transversely to the longitudinal sides between the two fold lines.
  • the material between the slots or punched-out areas and the short sides can preferably also be reinforced by applying a strip of a reinforcing layer.
  • the slots or punchings are preferably produced by means of a cutting roller, with which the method can be carried out continuously.
  • the speed of the cutting roller as well as the initial position of the cutting edges is selected in such a way that it is coordinated with a cutting embossing roller of the manufacturing plant in such a way that the slots are introduced at the third distance from the short sides that are created by the cutting embossing.
  • the slots can be designed as a straight line or in the form of an arc. Alternatively, however, the slots can also be designed as several straight and curved lines that cross or abut one another.
  • the punchings can have any shape.
  • the cutouts are preferably designed in the shape of the letter C. With this configuration of the punched holes, the material present within the C can be bent over when the protective mask is put on. The resulting folding can improve the wearing comfort of the protective masks on a person's ears.
  • the first distance is preferably 5 to 20 mm, in particular 10 to 15 mm.
  • the width of the tape and the first spacing are preferably selected such that the protective masks have a width of 50-200 mm, in particular 60-190 mm.
  • the width of the protective masks corresponds to the width of the tape minus twice the amount of the first distance.
  • the first distance is 10-50 mm, with at least one of the two tabs being fixed along two lines with the first surface over the entire first distance, in particular by gluing, welding or sealing, the two lines being arranged in this way that after cutting the tape into parts, they are essentially symmetrical to an axis dividing a part transversely to the longitudinal direction and a first distance between the two lines in the region of the longitudinal edge is smaller than a second distance between the two lines in the region of an edge the at least one tab that is at the first distance from the longitudinal edge.
  • a trapezoidal area of the at least one flap is created between the two lines, which can be folded out when the protective mask is put on, so that it covers the bridge of the nose or the chin of the mask wearer.
  • Both tabs are therefore preferably fixed to the first surface by means of two lines each, so that a trapezoidal area is created for both tabs of the protective masks, whereby these are both folded out when the protective mask is put on and placed over the bridge of the nose as well as over the chin of the mask wearer can.
  • the protective masks offer increased protection, as a higher degree of tightness is achieved.
  • the first distance is preferably from 20 to 80 mm, while the second distance is from 60 to 180 mm.
  • the tape is preferably cut in the longitudinal direction of the tape in the region of the tabs in the region of the tabs before the cutting embossing, in particular with a cutting roller, so that the protective masks have a predefined shape after the cutting embossing.
  • an elastic band is placed in the longitudinal direction on the two tabs or in areas of a second surface opposite the first surface, which are opposite the two tabs, whereby the elastic bands are cut to length by the cutting embossing and connected to the filter material at the same time.
  • this step of the method can also be carried out continuously without the band having to be turned or turned.
  • each protective mask is preferably spaced apart from adjacent protective masks by a fourth distance, in particular by means of a separating device.
  • the protective masks are then conveyed one behind the other on a conveying device, an elastic band or a textile band being placed continuously on the protective masks and the conveying device in the area of the two flaps.
  • the elastic bands or the textile bands are fixed with the flaps of each protective mask, the elastic bands or the textile bands then being separated between two protective masks in half of the fourth distance, in particular by a cutting roller.
  • the protective masks to be provided with elastic or textile straps that can be knotted behind the head.
  • the elastic or textile straps can be continuously connected to the protective masks, so that the highest possible production speed is guaranteed, with the protective masks neither having to be rotated, turned or otherwise manipulated.
  • a separating device is preferably used.
  • the spacing can also take place in that the conveying device has a higher conveying speed than the advancing speed of the tape, the protective masks being transferred to the conveying device immediately after cutting. Due to the speed difference between the advance of the belt and the conveyor device, the protective masks are spaced from one another.
  • the feed speed and the conveying speed can be coordinated with one another in such a way that the protective masks are spaced apart from one another at the fourth distance will.
  • a conveyor belt, pull rollers or vacuum transport rollers are used as the conveying device.
  • the elastic or textile straps are preferably fixed to the flaps of the protective masks by gluing, welding, heat sealing or by using holding means, in particular staples.
  • the protective masks are preferably folded once along their longitudinal axis so that the elastic bands or textile bands lie on top of one another, with the cut ends of the elastic bands or textile bands lying on top of each other being connected to one another, in particular by gluing, during or after cutting or heat sealing.
  • the protective masks can be provided in a simple and continuous manner with elastic or textile straps on their short sides, with which the protective masks can be attached to a person's ears.
  • At least one additional element is preferably arranged at least in partial areas of the first surface and fastened with the filter material.
  • the at least one additional element is in particular an element made of a second filter material, an antibacterial material, a cushioning material, a fixing material or an odor-inhibiting material.
  • the at least one additional element in the form of a strip is preferably first placed on the first surface in the longitudinal direction of the tape and then fixed to it.
  • the at least one additional element is preferably fixed by the step of cutting embossing.
  • At least one elastic band is preferably applied as an additional element on the first surface and / or on a second surface of the filter material which is opposite the first surface, in the longitudinal direction of the band.
  • the protective masks can be given additional elasticity in certain areas.
  • an additional elastic band is applied in an area in which the intended Using the mask after putting on the same is placed on a person's chin. This improves the fit, and the protective masks can also be prevented from slipping when speaking.
  • a skin-friendly adhesive can be used as the fixing material. This allows the protective masks to be attached to the face so that they do not slip.
  • the adhesive does not have to be attached directly to the first surface, but it can be arranged on an adhesive tape which is attached to the first surface.
  • Such an adhesive tape does not necessarily have to be firmly attached to the first surface, but can also be attached to it in a detachable manner, e.g. by means of a Velcro connection.
  • At least one image, pattern and / or text is printed on a second surface of the filter material, which is opposite the first surface, before cutting into parts.
  • the masks can be decorated, visually embellished or even provided with instructions, in particular how the mask is to be put on. Advertising prints are also possible, for example if the protective masks are worn by employees of a company or if these are distributed as promotional gifts.
  • the present application also relates to a protective mask which is preferably produced according to the method described above.
  • the protective mask according to the invention comprises a rectangular part made of at least one filter material.
  • the at least one filter material is folded over along the two longitudinal sides of the part over a first distance onto a first surface of the filter material to form tabs, which are fixed to this at least in points.
  • the protective mask also has means for attaching the protective mask to a person's face.
  • the protective mask according to the invention has features which can all be produced by means of a continuous process. Accordingly, the protective mask according to the invention can be produced in large numbers at relatively low costs. Another advantage of the protective mask according to the invention is that this can be produced on existing production lines for hygiene articles, with these only having to be modified slightly.
  • At least one thread or strip of an elastic material is preferably placed on the first surface and fixed to it. This gives the protective mask elastic properties at least in the direction of the two flaps.
  • the means for fastening the mask on the face of a person are preferably formed by at least two slits or punch-outs which are made in the at least one filter material at a third distance from the short sides of the part.
  • the ears of a person can be put through the slit or punched-out holes, with which the protective mask can be attached to the face of the person.
  • the slots can be designed as straight or curved lines. Furthermore, the slots can also be designed from several straight and / or curved lines that cross one another or abut one another.
  • the punchings can be in any geometric shape that is suitable for inserting an ear. In a preferred embodiment, the punchings are designed in the shape of the letter C.
  • the at least one filter material within the C can be folded over backwards before the protective mask is put on, the resulting fold making the protective mask more comfortable to wear.
  • the part is preferably folded at least once along its two short sides so that the two tabs touch or lie on top of one another in a region of the two short sides, the short sides being fixed in the folded state so that hollows are formed on both short sides of the part that can be used to hang the protective mask over a person's ears to attach the mask to the person's face.
  • the protective mask according to this embodiment is essentially in the form of a hood which can be pulled over the face and attached to it by hanging over both ears. Such a protective mask can be produced easily and inexpensively.
  • the first distance is preferably 10-50 mm, with at least one of the two tabs being fixed along two lines with the first surface over the entire first distance, in particular by gluing, welding or sealing.
  • the two lines are arranged in such a way that they are essentially symmetrical to an axis dividing the part in the middle, a first distance between the two lines in the region of the longitudinal edge being smaller than a second distance between the two lines in the region of an edge the at least one tab that is at the first distance from the longitudinal edge.
  • a trapezoidal area forms between these lines, which can be pulled over the bridge of the nose or the chin when the protective mask is put on. This results in a higher sealing effect of the protective mask and thus better protection.
  • the means for attaching the protective mask to a person's face are preferably formed as at least two textile or elastic bands, which are connected to the at least one filter material in the region of the short sides, and which are either arranged in the longitudinal direction over the flaps or as a loop along the two short pages are available.
  • the Fig. 1 shows a schematic representation of a first embodiment of the method according to the invention.
  • a band 1 made of at least one filter material is presented on a roll 2 and continuously processed into protective masks by a production facility (not shown) with individual processing stations according to the embodiment shown.
  • the arrow at the top of the figure shows the direction of advance of the tape 1.
  • the belt 1 has two longitudinal edges 4.1, 4.2 and a first surface 3 in the longitudinal direction so that two side tabs 6.1, 6.2 are formed.
  • the two tabs 6.1, 6.2 are then fixed to an edge that rests on the first surface 3 of the tape 1 by gluing along two glue lines 7.1, 7.2.
  • fold lines 24.1, 24.2 are formed on both sides of the tape 1.
  • the strip 1 is divided into parts with a first length L1 by a cutting embossing step 8, in particular by means of a cutting embossing roller.
  • the band is cut along a cutting line 9 on the one hand and embossed in an area on both sides of this cutting line 9.
  • the embossing for example, several layers of filter material of the strip 1 can be connected to one another.
  • the cut parts correspond to a protective mask 11, each protective mask 11 over two longitudinal sides with the first length L1 and two short sides 13.1, 13.2 with a width corresponding to the width of the strip 1 minus twice the amount of the first distance A1.
  • the Fig. 2 shows a schematic representation of a second embodiment of a method according to the invention.
  • the first step 5 in which the at least one filter material is turned over along the longitudinal sides 4.1, 4.2 of the tape 1, at least one thread or a strip of an elastic material 12.1, 12.2 is placed on both sides of the first surface 3 and with this is fixed, in particular by using hot melt adhesive or by welding.
  • the Threads or strips of the elastic material 12.1, 12.2 are arranged at a second distance from the longitudinal sides 4.1, 4.2 of the tape, which is greater than the first distance A1, but less than twice its amount.
  • the threads or strips of the elastic material 12.1, 12.2 therefore lie within the flaps 6.1, 6.2, ie they are surrounded on both sides by the at least one filter material of the band 1.
  • the threads or strips of the elastic material 12.1, 12.2 are placed on the first surface 3 of the band 1, in particular under pretension, and fixed with it.
  • the tabs 6.1, 6.2 are fixed by applying the same hot melt adhesive or by using the same welding process that is used to fix the threads or strips of the elastic material 12.1, 12.2 by means of adhesive or welding surfaces 23.1, 23.2.
  • the threads or strips of the elastic material 12.1, 12.2 are cut simultaneously with the band 1 by the cutting embossing step 8 and are additionally connected to the at least one filter material in the area of the short sides 13.1, 13.2 of the protective masks 11.
  • the Fig. 3 shows schematically and in detail a further embodiment of the method according to the invention, in which before the cutting embossing step 8 slits 14 are cut in the at least one filter material of the strip 1, in particular by a cutting roller.
  • the slits 14 are cut into the tape in such a way that they each come to lie at a third distance from the cutting line 9 on both sides.
  • the slots 14 are each essentially symmetrical with respect to a longitudinal axis of the band 1, ie they are each at the same distance from the two tabs 6.1, 6.2.
  • the slots 14 are also arranged in such a way that they are each spaced apart from the short sides 13.1, 13.2 by a third distance A3 after the cutting embossing step.
  • the protective masks 11 could be hung over the ears of a person by means of the slots 14, so that the protective masks 11 can be fastened over the mouth and nose of the person.
  • the Figures 4a and 4b show alternative embodiments of the slots 14 for the embodiment of the method according to FIG Fig. 3 .
  • the slot according to Figure 4a has a first line running transversely to the longitudinal direction of the strip 1, in which in the half a second line is at right angles to the first line, the two lines touching each other.
  • the slot according to Figure 4b has a first line which runs transversely to the longitudinal direction of the band 1, the ends of which are rounded off with an arc of a circle over 90 °. In the half of the first line, a second line adjoins this, whereby the second line is at a right angle to the first line.
  • the Fig. 5 shows a protective mask 11 which can be obtained by means of a further embodiment of the method according to the invention.
  • the protective masks are initially according to the embodiment of FIG Fig. 2 produced, the individual protective masks 11 being folded at least once along their two short sides 13.1, 13.2 and the short sides 13.1, 13.2 being fixed in the folded state, for example by the cutting embossing step or by welding, before the cutting embossing step 8.
  • hollows are formed in the area of the two short sides 13.1, 13.2, which can each be hung over a person's ear in order to fasten the protective mask 11 on the person's face.
  • the protective masks form a kind of hood which a person can hold in front of their face and slip over both ears. Thanks to the threads or strips of the elastic material 7.1, 7.2, the protective masks 11 according to this embodiment can be easily and reliably attached to a person's face.
  • the Fig. 6 shows a schematic representation of a further embodiment of a method according to the invention.
  • two fixation lines 15.1, 15.2, 15.3, 15.4 are introduced in each of the two flaps, for example by embossing or welding.
  • the two fixation lines 15.1, 15.2; 15.3, 15.4 of each tab 6.1, 6.2 are at an angle to the respective fold line 24.1, 24.2, the two respective fixation lines 15.1, 15.2; 15.3, 15.4 on the respective fold line by a first distance D1 and on the edge of the respective tab, which rests on the first surface 3 of the tape 1, by a second distance D2, which is greater than the first distance D1.
  • the respective fixation lines 15.1, 15.2; 15.3, 15.4 of each flap together with the respective fold line 24.1; 24.2 and the edge of the respective tab 6.1, 6.2 a trapezoidal area 16.1, 16.2.
  • the trapezoidal areas 16.1, 16.2 can be folded out onto a person's face when a protective mask 11 is put on and put over the person's nose or chin in order to achieve an additional seal in these areas.
  • fixation lines 15.1, 15.2; 15.3, 15.4 are applied to the tabs 6.1, 6.2 in such a way that the trapezoidal areas 16.1, 16.2 come to lie approximately centrally in the longitudinal direction of the protective masks after the embossing cut 8.
  • the Fig. 7 shows schematically a further embodiment of the method according to the invention.
  • an elastic band 18.1, 18.2 is placed in the longitudinal direction on each of the two tabs 6.1, 6.2 before the cutting embossing step 8.
  • the elastic bands 18.1, 18.2 are both cut and fixed on the tabs 6.1, 6.2 by the embossing.
  • the separating embossing step 8 takes place in two sub-steps, the embossing sub-step initially taking place in order to fix the elastic bands 18.1, 18.2 to the at least one filter material, followed by the cutting sub-step.
  • the protective masks 11 can be fastened behind the head of a person by means of the elastic straps 18.1, 18.2.
  • the elastic bands 18.1, 18.2 can also be fixed with additional means in the area of the short sides 13.1, 13.2, for example by applying a drop of adhesive or by means of a staple.
  • additional elastic bands can be applied to the first surface 3 or also to the second surface which is opposite the first surface 3, these additional elastic bands being fixed to the band 1 along the longitudinal direction thereof.
  • the Fig. 8 shows a schematic representation of a further embodiment of a method according to the invention.
  • the protective masks 11.1-11.3 are spaced apart from one another by a fourth distance A4 after the cutting / embossing step, for example by a separating device (not shown).
  • the protective masks are conveyed by a conveyor, which in the embodiment shown is designed as a conveyor belt (endless belt) 20, along a conveying direction (arrow above) emotional.
  • a textile or elastic band 18.1, 18.2 is continuously placed on the protective masks and on the conveyor belt 20 in the area of the two tabs 6.1, 6.2.
  • the textile or elastic bands 18.1, 18.2 are fixed on the tabs 6.1, 6.2, for example by welding or a hot melt adhesive.
  • the textile or elastic bands 18.1, 18.2 are then each cut in half of the fourth distance A4 along a cutting line 21, in particular by a cutting roller (not shown).
  • the protective masks produced in this way can be attached to the person's face by tying the textile or elastic straps behind the head of a person.
  • the Fig. 9 shows an alternative embodiment to the inventive method according to FIG Fig. 8
  • the masks 11.1-11.3 are folded along their longitudinal axis so that the textile or elastic bands 18.1, 18.2 lie on top of one another.
  • the textile or elastic bands 18.1, 18.2 lying on top of one another are then separated in half of the fourth distance A4 and sealed to one another at the separation point 25.
  • This results in a loop 26.1, 26.2 on each of the short sides 13.1, 13.2 of the protective masks 11, as on FIG Fig. 10 can be seen.
  • the loops 26.1, 26.2 consist of the cut ends of the textile or elastic bands 18.1, 18.2, which are connected to one another at their interfaces 25 by means of a seal 22.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP20170125.7A 2020-04-17 2020-04-17 Procédé de fabrication de masques de protection ainsi que masques de protection Withdrawn EP3895763A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20170125.7A EP3895763A1 (fr) 2020-04-17 2020-04-17 Procédé de fabrication de masques de protection ainsi que masques de protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20170125.7A EP3895763A1 (fr) 2020-04-17 2020-04-17 Procédé de fabrication de masques de protection ainsi que masques de protection

Publications (1)

Publication Number Publication Date
EP3895763A1 true EP3895763A1 (fr) 2021-10-20

Family

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EP20170125.7A Withdrawn EP3895763A1 (fr) 2020-04-17 2020-04-17 Procédé de fabrication de masques de protection ainsi que masques de protection

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EP (1) EP3895763A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB893614A (en) * 1960-02-10 1962-04-11 Vernon & Company Ltd Improvements in or relating to surgical face masks
US4084585A (en) * 1977-01-12 1978-04-18 Venaleck Howard J Face mask
US20050098182A1 (en) * 2003-11-12 2005-05-12 Callan Eoin J. Respiratory mask
EP2695641A2 (fr) * 2012-08-06 2014-02-12 SAN-M Package Co., Ltd. Masque

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB893614A (en) * 1960-02-10 1962-04-11 Vernon & Company Ltd Improvements in or relating to surgical face masks
US4084585A (en) * 1977-01-12 1978-04-18 Venaleck Howard J Face mask
US20050098182A1 (en) * 2003-11-12 2005-05-12 Callan Eoin J. Respiratory mask
EP2695641A2 (fr) * 2012-08-06 2014-02-12 SAN-M Package Co., Ltd. Masque

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