FR2483787A1 - FACIAL MASK AND METHOD OF MANUFACTURE - Google Patents

Abstract

THE INVENTION RELATES TO A FACIAL MASK. ACCORDING TO THE INVENTION, IT INCLUDES TWO LAYERS OF FLEXIBLE AND SLITTED PLASTIC MATERIAL 10, 12 CONFORMING TO THE CONTOURS OF A USER'S FACE AND SUPPORTING FILTERING MATERIAL 14 TAKEN IN SANDWICH BETWEEN THEM, WITH SOFT MATERIAL 16 OF THE SIDE OF THE USER'S FACE. THE INVENTION APPLIES IN PARTICULAR TO THE FILTERING OF PARTICULAR IMPURITIES IN THE AIR.

Description

248378?

  The present invention relates to weak masks and more particularly to faith masks formed of a number of layers, the individual eoches fulfill various functions in the facinl mask according to the invention at least one ocouhe is formed dume ti. A perforated layer which serves as a supporting layer for providing at least one other filtering material. In a particular embodiment of the invention, two layers of flexible, perforated plastic material provide support for the coating layer. filtering, this layer of filter material is taken in Esadiqch between the layers of plastic material openwork

  With the mask rai-al seloen linvention9 luUtisa-

  The perforated plastics material provides a flexible support and yet its shape for the fastening material. Moreover, since the plastic material has a perforated configuration which forms a certain number of perforations, the perforated plastic material allows the generally unrestricted passage of a large volume of COO-area, the perforated plastic material for the passage of a volumetric material. important deair, the facial mask according to the invention is comfortable to wear because the

  User breathing is not restricted.

  The oouohe dt. Filtering material can be of any general type of filter material used with facial masks to allow the filtering of particulate impurities. With the facial mask of the invention, the filtering apparatus can be used for the following purposes. - while still being well supiort by the support beds ren o.atlbre plastic ajouréeo In addition, the met'riau. Filtering commonly used may not use a device that preserves its shape or it is necessary to use it itself.

  There was some reason to bear it.

  In the following, according to the invention, the material is: ## EQU1 ## or ## EQU1 ## formed of a plastic sheet which is may be formed of a sheet of woven material or may be formed of a mesh material In particular, the perforated plastic layer may be formed of various plastics such as vinyl, polyethylene, synthetic or natural rubber or the like materials or combinations of materials. For example, the perforated plastic may be formed

in ethyl vinyl acetate.

  The filter material may be formed of various types of filter materials, such as nonwoven polyester fiber, electrostatically charged polypropylene, activated charcoal, various types of natural fibers and other commonly used filter materials. Many of the filter materials commonly used to form the filter portion of the face masks can not withstand a high degree of heat because this heat can reduce or eliminate the filtering properties of the material. With the present invention, the face mask can be formed using a method that does not subject the filter material to a high degree of heat, thus, the filtering properties of the filter material are not

- not significantly affected.

  In a first particular embodiment of the invention, the face mask is formed of four layers of material and more particularly comprises two layers of perforated flexible plastic material for supporting a layer of filter material between these layers perforated plastic material. A fourth inner layer of a soft material serves as a layer placed against the face of the user of the mask. This soft material offers

  additional comfort to the user of the facial mask.

  For example, a material such as a nylon knit can serve as a layer of soft material. In another embodiment of the invention, a single sheet of flexible plastic material and perforated is formed to support

  a layer of filter material.

  The present invention may also comprise various additional means for forming a closure along the peripheral edge of the facial mask. For example, a sprue joint may be spun around the peripheral edge for example by closing the peripheral edge of the facial mask. also close the edge of this mask against the face of the user of the mask. Other means to obtain the obturation or dtohit the perimph riqlue of the facial mask consisting of cutting a hot blade avco, the meshes of the MESQ ue fzcieliel to the external configuration In this embodiment of the invention, the filter material is pre-cut to a spunbonded configuration of the filter, to allow the perforated plastic layers to melt on the perimeter edge, and thus to seal the peripheral edge. . The layers of. the expanded plastic material extends beyond the material p = déoupoup iltra9g @ e and when the necklaces of openwork plastic are cut by means of 1'mie hot- the peripheral edges of the layers of perforated plastic material stick together to drill a shutter As a result, the peripheral edge portions of the openwork plastic layers may be rolled or molded to form a hem.

attached if desired.

  The present invention also relates to a method of molding a multi-layered face mask, a reinforced configuration for conferring on the wearer's face, and wherein the filter material is provided to the user.

  a minimum of heat, in order to hinder damage.

  More particularly, the perforated plastic sheets are pre-heated at a position remote from the filtering material. The leaves of plastiqae openwork are then inserted between male organs. and female mold, the filter material being inserted at the same time between the pre-heated sheets of plastic material ajouree0 the orgmese m & la and female mold are m3 in hL r L a besse teé: prature and when these bodies are close together to mold the facial mask to the desired contour configuration, the perforated plastic sheets which have been softened by the pre-heating are

  molded and quickly reduced in temperature. The utilisa-

  This cold molding technique prevents the filter material from being exposed to a substantial amount of heat. In the process described above, the material

  filtering can also be pre-cut to a configura-

  It is intended that, after molding the face masks, the perforated plastic layers extend beyond the pre-cut configuration for the filter material. The present invention is therefore directed to a face mask which allows the use of different types of filter material to provide the desired degree of filtering while at the same time allowing a considerable volume of air to pass to the user. of the mask. The face mask according to the invention comprises at least a single layer of perforated flexible plastic material carrying and carrying at least one layer of filter material. The facial mask according to the invention may comprise an additional layer of perforated plastic material to form an additional support and an additional layer of a soft fabric for comfort. The present invention comprises various means for sealing the peripheral edge of the face mask. The present invention is also directed to a particular method of molding the face mask, where a cold molding technique is used to prevent any deterioration of the

  filtering material by heat.

  The invention will be better understood, and other purposes, features, details and advantages thereof

  will become clearer during the description

  explanatory text which will follow with reference to the accompanying schematic drawings given solely by way of example illustrating several embodiments of the invention and in which: FIG. 1 is a perspective view of a first embodiment of a face mask constructed according to the teachings of the present invention, FIG. 2 is in accordance with the first embodiment of the invention; FIGURE 5 is a transverse transverse shoulder which follows the links 353 in FIGURE 29 - FIGURE 4 is cut in section through a portion of a recess of the face mask according to the invention. Fig. 5 is a basic view of a patient's patient's facial embodiment according to the invention, with a seal for lateral closure or ordnance; Figure 6 is a cross-sectional street in the middle of the third embodiment of the face mask. An average gauge is provided for forming the lateral closure. FIG. 7 is a fourth embodiment of the facial mask according to FIG. the invention uses a pre-cut filtering member; FIG. 8 is viewed in a cross-sectional view of part of the face mask of FIG. 7; FIG. 9 is a cross-sectional view of the part of the facial section of FIG. 7 with a side view and FIG. Figure 10 is a facial massage training method co! 1imventiiOn Los 2igures. 1 hour 5 months ago, a major node in the Greater Lyon area will be involved in this event, which will include a number of additional resources, such as the number of participants and the number of participants, as well as the number of participants. layer of material of size-1, the soft-soft fabric 16 is placed on top of the top, so that it can provide comfort to the user. Masquee A bnde -? flt1 (1 .., -hz, ep pap ages 22 and ellea is used to support the face mask in position against

  the face, as can be seen in Figure 3.

  The perforated plastic layers 10 and 12

  form the support layers of the filter material 14.

  In particular, the perforated plastic layers may be formed of sheets traversed by a number of openings to allow the free passage of air. For example, the perforated plastic layers may be formed of a perforated plastic, a woven plastic, a mesh plastic and the like. In general, the material

  plastic is of the type that can be molded

  desired configuration by maintaining this configuration in order to support the filtering material, while at the same time being sufficiently flexible to allow the

  facial mask to conform to different facial contours

  individual users of the mask. More particularly, the layers of perforated masks may be composed of various types or combinations of plastics such as vinyls, polyethylenes, synthetic or natural rubber and the like, allowing the moldability to form the desired configuration, however with sufficient flexibility to allow the mask shaped to fit the face of each

individual.

  The filter layer 14 may be formed of any known type of filter material such as non-woven polyester fiber, polypropylene electrostatically

  activated charcoal, various natu-

  such as merino wool, or other types of materials used for filtering. Many of these different types of filter materials can not withstand high heat because this strong heat has

  tendency to destroy the filtering properties of the material.

  The present invention provides a method of forming the face mask where the filter layer 14 is not subject

at a high heat.

2485T87

  DPms the pzomier Bode of realization of, seaju facial dea fires t to 3, sue layer intesrne -en cloth or, is expected c_ comforto This layer can be oimee in a ma'e ian such as M trsiot e nylo, being able to aerate The inner layer of plastic material is curved during the molding process. As can be seen in FIG. 13, the bod 20 which extends around the periphery of the meshes is open. As indicated above, the static band 81 can be fixed to the normal using a 2 racs 229 co g agres 22 agrmt

  At the same time, the layers appear at the sides.

  If desired additional staples can be placed on the ouou of the imacque acia! M0 Come the facial maski according to the invention is gnéaIem enet not intended to be subject to u% port rpté9 then the edge me oit not be closed. In addition, the various layers during the molding process are somewhat different. In addition to other embodiments of the facial mask according to the invention, various means are provided for sealing the peripheral edge of the face mask. This obturation can also provide a more precise fit of the mask to the face of the user. pasbe of a second embodiment of raquelisation of the facial measque according to the invention, and it

  Watch in particular U mask f acia having a construction

  simpler than that of the first mode of realization,

  with only two layers of material & more particulullôre-

  With the embodiment of FIG. 4, a first internal layer 32, perforated flexible plastic material 30 forms the support or support of a second layer of filter material 32. The layers 30 and 52 may be The above materials are used, and an elastic band can be attached to hold the face mask in position in the embodiment of FIG. 4. ! Use of filtering material 32 which, at least to some degree, will adhere to itself, since the filter material is not sandwiched between two layers of plastic material. It will also be noted that the relative positions of the layers 30 and 32 can be reversed, the filter material being inside. For example, if the layer of the filter material 32 is formed of a natural fiber, such as

  merino wool, so this layer can be comfortable-

  placed against the face of the user. Since the embodiment of the face mask of FIG. 3 is simpler in construction and its materials are simpler, it will be less expensive than the embodiment of FIGS. 1-3. However, the face mask of FIG. not allow to resist to the same degree

  of wear that the embodiment of Figures 1 to 3.

  FIG. 5 shows a part of a third embodiment of the face mask according to the invention with two support layers made of flexible plastic material and openwork 40 and 42 which receive therebetween a layer 44 of filtering material. In the embodiment of Figure 5, the edge of the face mask is closed by a

  soft molded seal member 46 attached thereto.

  The seal forming member 46 not only allows the closure of the edge, thus preventing the layers from separating, but it also provides a sealing or sealing

  most important of the mask against the face of the user.

  The seal member may be attached to the molding edge

or can be molded on site.

  FIG. 6 shows a face mask having the same general structure as that of FIG. 5, and having the two layers of perforated flexible plastic material 40 and 42

  supporting the layer of filter material 44 between them.

  The mask of Figure 6 has a different means for sealing or sealing the edge. More particularly, in the face mask of FIG. 6, the peripheral edge 48 has been cut with a hot blade, which has melted the plastic material forming the layers 42 and which has reached the edge of the edge. o o o o o o filtering 4, o This fusion of the matzie p? easique f Me eison of iVers $ e Layers tc lone of the edge pti} ,, 48 po ^ p zo pocket the couohez Se Bpa-er. it is nobed that the relaunching egoes are in place at the end of the year and at the end of the year. fao ilnte8ze dui mageqe Doi mSm% used and so on of a co-gemeNg foPeSeMeb anointed o f th e Foun d of the Plastic Ruler also had to be used 9o% u get the edge of the edge of the Mezze amois at Sidvei, which are covered by the following table 7, which is also used as a method of production. it has been deposited from the Basque Country in the past. We are 52 and 54. We also have 7 and 8 Ps-2eies. ss, oohes in reasical material 52 and 54 s dtLQAkut aeid de lci oouoe. = 0emp'e 50 of the milling material s ~ l.es fsose on a U meq faoiat CChe on tpeu, see it in the figPue 9 The pipelines of Oops 52 and 54 can be omitted from the above-described or described or described desiccation. or how little is it, and how are it or how much it is, whether it is a dream or not? plastico Be bouPselet 56 tee 2t'ie: l psabt ', iru ... t.ode? fdre roup the msem if pce -,' u get @ and 5th.ale put ffJSoPmr an anointed plus 6 & D of the mask oentrew l face of 1 -Qilicatei The S 12u% 0? it, a 3I of fabi atio2 O, has, maesGqbGe -I; 4'Q -slOî ti uitiono and more pPuloulimeneuen% t pod {eolese {i esoe if;: ali% !. a ooguraPtion s; deP saes Sue lee Pau d'iltege 2Ci-ede Itg rAwu open.e.ezeieager this eeieU.O Does the proo6ds Pepdcs, t6 sup is fig% 10, the nateriau 110 Co IE '-t,' Sscnout 0. it can be pPó = 1-D peo, L: ee Moatéeú, u Pe = d <:, se: r :, e ó,? In this embodiment, the top and inner sheets 112 and 114 of plastics material are subjected to preheating for the first time. For example, the plastic sheets may be pre-heated to 140 ° C. This is shown by step 102, using the heaters 116 and 118. The upper and lower sheets preferably heated plastics must be inserted between male and female molds 120 and 122, in 106 are may held at a low temperature by a refrigerator device 124. For example, the molds 120 and 122 can be maintained at 2 + 3DC. The pre-cut filter material 110 must also be inserted at the correct position between the male and female molds 120 and 122 and

  between the upper and lower leaves 112 and 114.

  In addition, a soft fabric 126 may be inserted between the

  male mold and a sheet of plastic material

  heated. This is represented in step 104.

  In the next step, the molds, which are held at a cold temperature, are brought together to capture the upper and lower plastic sheets 112 and 114, the pre-cut filter material 110, and the fabric 126 to allow the molding of individual face masks. The use of the cold molds allows the upper and lower plastic sheets to be cooled at the same time as they are molded to the desired contour configuration. In this way, a relatively low degree of heat is transferred to the filter material, while allowing the face masks to be well molded. All particular embodiments of the face mask described above can be made by the desired method as long as at least one perforated flexible plastic layer is used to support the filter material to allow a large volume of air to cross

  the opening of the perforated plastics material.

  As a final step, the individual face masks Dnnrvent Q tz.G de7? 0 $ mgs zM-iIsO 2al and the ww: Étr ob-3s-m \ x-: is $ P% z @ $ ooit in uatîlism o 4Xt du, b rd, with me Mae o? D02e oe the Momzemt las figuares 6 @ e% 9. * maqie Ga eff ictcia to the laws ilaOat, 'ivi q' B'o1 @ 0 of to ut C-in pez1a being the mask 4e2Xt Se o2e, 3 the 1Edefira $ iOn the face of!, utiliaSeu? and in doing so, you should pay attention to "X roll, he! a $ ivem \% miIt) ber $ P & '8ms aai," at the same time! $ 6

Claims (11)

R E V E N D I C A T I 0 N S   1.- Face mask to wear on the face of a   user, producing a filtering of particular impurities   in the air, characterized in that it comprises: at least one layer (10) of a flexible plastic material generally molded to conform to the contours of the user's face and forming a flexible support for a filter material said layer being formed of a perforated flexible plastic material to form a number of perforations therethrough, allowing free passage of air through said layer; and a separate layer (14) of filter material supported by said flexible plastic layer,   said filter material filtering the impurities eyelids in the air.   2. Mask according to claim 1, characterized in that it further comprises another layer (12) of flexible plastic molded openwork forming another flexible support for the aforementioned filtering material, the layer of said filter material being sandwiched between said layers of plastics material flexible and openwork.   3. A mask according to claim 2, characterized in that the peripheral edges of the perforated flexible plastic layers are heated to seal   the peripheral edge of said mask.   4. A mask according to claim 2, characterized in that the layer of filter material mentioned above is pre-cut to a particular configuration and in that the layers of flexible plastic material perforated above   extend beyond the periphery of said filter material.   5. A mask according to claim 4, characterized in that the peripheral edges of said layers of perforated flexible plastic material at a position beyond the periphery of said filtering material are Gl16os, eemblle p -oulr fe, We bourrlt (56 ) 6.Mlasuee e oe roe erioatiens I oe 2, o.xoeer s6e e, qua moremore a key cut (16) oeouvPt its setfe tizta ePe 7 Mask selo. It is also important that the area of the field of planetary materials is so large that it obeys the edge of the surface. Mtfe soon3! A PeeDl iortiem l oaret @ risé in oae {ie the pie ty of the filtering unit 2 is peopled and peopled, and in this way the cost of Fusible ateée elite e2d de @ -elat peartour, udî1t filtering material, 9, Mask according to the dream diatio 8O, characterized in Ge that the pdhSrique edge th the couohe of flexible plastic material ajouPée préitée a position beyond from the fear of the aforementioned filtering material is Gheat to form a bead.   t0. How much is the cost of reYemdio   I or 2, it is also possible to use the edge of the machine to make it easier for the user to use the machine. @ ePettot ufiltrege, eaarotPisî in this, Gil eemp Md leo fpe-ePe ame ee ee ee of plastic maeTire A2exi * xbl-e in tee plastMe e Plexible perforated head for proeiure% e oertein number of perforations peetteunt the free passage of the plastic material in the form of an oil filtering louvre in order to reduce the pressure on the male and female detectors of the Mouta family to a minimum of 100%. It is mainly done at the end of the day, at the end of the day, to a flexible plastic perforated at a hot temperature, sufficient to mold the plastic material to a desired configuration, to move the pre-shaped layer -heated flexible perforated plastic material and the layer of filter material between the gold male and female casting ganes which are cold, and pressing said male and female mold member against each other to form the face mask to the desired configuration, by molding said layer of perforated flexible plastic material to form a support layer carrying said layer of   filtering, while cooling at the same time the layer   heated flexible perforated plastic material, sufficient   in order not to damage the layer of filtering.   12. A process according to claim 11, characterized in that two layers of perforated flexible plastics material are provided and preheated and in that the above-mentioned layer of filter material is sandwiched between said perforated flexible plastic layers when the male and female organs   above mentioned molding are pressed against each other.   13. The method of claim 12, characterized in that it further comprises the step of forming a layer of soft fabric and placing said layer of soft fabric between the aforementioned molding members to cover the internal surface of the facial mask.   14.- Method according to claim 12, characterized in that it further comprises the step of heating the peripheral edges of said perforated flexible plastic layers to seal the peripheral edge of the facial mask.   15. A method according to claim 12, characterized in that it further comprises the step of pre-cutting the layer of the filter material to a particular configuration and the layers of perforated flexible plastic material molded to extend beyond Beyond the periphery of said 16o Poccd sele_e the cacatérisé 1'euotion 150 and tqcii eo you glue the edges perii ePi @ queu the ouoeo de mÉtî (flexible plastic openwork enserble, in paise beyond the pouPrto the 9. A filter for a bead 17- rotated according to claim 129 characterized in that it comprises more than one seal attached to the main borg2 of the ejection step 18- A method according to claim 119, characterized in that In addition, the step of foeing a layer of to2fe ootle and pumping it between the moldings   pPSci'b to cover the su ffi ciency of the medical profession.   19o = PrOceded the reeloe 11o cara; terisîs in that it eop: makes it possible to heat the periphclic bod of the couohe proitiess of Mti e plastic lexible perforated to seal the perimph rim of the mask easy.   20. The method according to claim 119, characterized in that it furthermore includes the step of cutting off the layer of material from a particular conglomeration and the neck of perforated flexible plastic material, so that it can be stretched. to = del. from around said filter material.   21. A method according to the invention characterized in that it further comprises a step of heating the peripheral edge of the above-mentioned hollow-flow plastic material to a position beyond that; around the   Filter material lending yard form a bead.   22 according to claim 119, characterized in that it further comprises the step of attaching a seal   on the peripheral edge of the facial mask.