Ballistic protection element for bulletproof vests adapted to the female anatomy

Abstract

The invention relates to a ballistic protection element (100) for the protection of a female torso, said protection element having a rear face (101), intended to be positioned opposite the female torso, and an opposing front face (102), and comprising, within its thickness: a first assembly (120) of a plurality of layers (121) made of fibers, with surface dimensions adapted to cover the female torso, and having a shape reproducing the shape of the female torso; a second assembly (130) of at least one layer (131) made of selected fibers, with surface dimensions adapted to cover only the female breast, and having a shape reproducing the shape of the female breast. The layers of the first assembly (120) are independent of each other. Figure 1

Description

Title of the invention: Ballistic protection element for bulletproof vests adapted to the female anatomy. Technical field of the invention

[0001] The present invention relates to the field of personal protective clothing intended to protect an upper part of an individual's body, more specifically their torso. More particularly, the invention concerns a ballistic protection element, of the type intended to be integrated into a bulletproof vest, for the protection of a female torso, and more specifically the breasts. Previous technique

[0002] There are several types of bulletproof vests, depending on the desired level of protection for the individual wearing said bulletproof vest.

[0003] Bulletproof vests suitable for the protection of an individual comply with various performance standards, including those set out by the American NU standard (acronym for National Institute of Justice), the German VP AM standard (Association of testing bodies for attack-resistant materials and constructions), the English HOSDB standard (acronym for Home Office Scientific Development Branch), the Russian GOST standard and the NATO STANAG standard (abbreviation for Standardization Agreement).

[0004] Conventionally, the degree of protection is classified into five categories: - protection of an individual against attacks carried out with so-called handguns, - protection of an individual against attacks carried out with hunting rifles, - protection of an individual against attacks carried out with assault rifles, - protection of an individual against attacks carried out with bladed weapons - protection of an individual against attacks carried out with explosive devices generating shrapnel / fragments.

[0005] Bulletproof vests adapted for the protection of an individual against attacks carried out with handguns are capable of stopping, according to the desired levels of protection, ammunition in calibers of 9 mm x 19 mm, .357 Magnum, .44 Magnum, .22 Long Rifle, 7.62 x 25 and with a velocity between 200 and 650 m / s.

[0006] Bulletproof vests adapted for the protection of an individual against attacks carried out with hunting rifles are, for their part, capable of stopping 12 / 76 or 16 caliber ammunition, for example of the Brenneke or Sauvestre type.

[0007] Bulletproof vests adapted for the protection of an individual against attacks carried out with assault rifles are capable of stopping 7.62 mm, 5.56 mm, 5.45 mm caliber ammunition and for a maximum velocity of 1000 m / s.

[0008] Bulletproof vests adapted for the protection of an individual against attacks carried out with bladed weapons are capable of stopping weapons such as ice picks, double or single-edged knives, syringes.

[0009] Finally, bulletproof vests adapted for the protection of an individual against attacks carried out with explosive devices generating shrapnel / fragments are capable of stopping explosive devices as mentioned, for example, in the STANAG 2920 standard.

[0010] The most commonly used bulletproof vests, particularly by the national police, gendarmerie, and municipal police forces, are those designed to protect individuals against handguns and shotguns. Typically, this type of bulletproof vest includes a flexible ballistic protection element integrated into the ventral part of the vest, usually inside a waterproof cover. This ballistic protection element consists of a stack of layers made of fibers.Each of these layers is generally formed from a series of unidirectional plies made of ultra-strong fibers such as very high or ultra-high molecular weight polyethylene fibers, or para-aramid fibers, which are stacked one on top of the other and held in a matrix of an organic binder, preferably of a thermoplastic type, or possibly of a thermosetting type. All the stacked layers are of the same shape and dimensions, except possibly for their thickness.

[0011] Such protective elements have a generally flat shape and are perfectly suited to the male morphology, the flexibility of the protective elements allowing them to adapt to a man's torso.

[0012] However, they are in no way adapted to the female anatomy, particularly the curves of a woman's breasts, and therefore cause discomfort when she wears a bulletproof vest containing such a protective element. Furthermore, such protective elements do not provide sufficient protection, especially in the area between the breasts, given the gap between the ballistic protection element and the body, and can cause significant trauma if a projectile strikes an area near the breast. Presentation of the invention

[0013] The present invention aims to remedy the aforementioned drawbacks, in particular those set out above, by proposing a ballistic protection element, intended to be integrated into a bulletproof vest, adapted to the female morphology, and which provides both comfort when worn and sufficient protection, in particular in an area located between the two breasts, reducing trauma for the user of the bulletproof vest incorporating such a ballistic protection element.

[0014] Additional objectives of the invention are that the bulletproof vest incorporating this ballistic protection element is easy and quick to manufacture.

[0015] To this end, the present invention proposes a ballistic protection element intended for the protection of a female torso, this ballistic protection element having a first face, called the rear face, intended to be positioned opposite the female torso, and a second opposite face, called the front face.

[0016] By female torso, we mean the region of the human body comprising the breasts, abdomen and flanks.

[0017] This ballistic protection element conventionally comprises, within its thickness, a first set of a plurality of fiber-based layers. This first set has surface dimensions adapted to substantially cover the female torso.

[0018] The fibers of this first assembly are selected, in particular, from high or ultra-high molecular weight polyethylene fibers, para-aramid fibers, and basalt fibers, or any other type of fiber with properties that make them suitable for use in ballistic protection. The composition of the layers, as well as the number of layers forming the first assembly, are preferably chosen, in combination with each other, so that said first assembly is capable of protecting an individual against attacks carried out with handguns (and thus meets, for example, UN Level IIIA standards) and with shotguns. It is within the competence of a person skilled in the art to determine the combinations of layer composition and number of layers that achieve such performance, or any other substantially equivalent performance required.

[0019] The first assembly advantageously has a shape that substantially reproduces the shape of the female torso. In other words, the first assembly does not have a generally flat shape, but rather a contoured form. This contoured form is adapted to fit the shape of the female torso. The first assembly is thus formed to conform overall to the female torso, thereby allowing it to fit said female torso as closely as possible.

[0020] The ballistic protection element according to the invention further comprises a second assembly of at least one fiber-based layer, in particular fibers selected from high or ultra-high molecular weight polyethylene fibers, para-aramid fibers, and basalt fibers, or any other type of fiber having properties that make them suitable for use in ballistic protection. This second assembly has smaller surface dimensions than the first assembly. More specifically, the surface dimensions of the second assembly are adapted to cover only the female chest.

[0021] The second assembly is positioned relative to the first assembly at the level of a part of the ballistic protection element, called the local part, which is intended to be positioned at the level of the female chest.

[0022] The second assembly has a shape that substantially reproduces the shape of the female breast. In other words, the second assembly does not have a generally flat shape, but rather a contoured form. This contoured form is adapted to fit the shape of the female breast. The second assembly is thus formed to conform overall to the female breast, thereby allowing it to fit said female breast as closely as possible.

[0023] The ballistic protection element may thus have, at the level of its local part, an excess thickness due to the second assembly.

[0024] The layers of the first assembly are independent of each other, over the entire surface of the ballistic protection element.

[0025] A layer of the second set adjacent to a layer of the first set is also independent of said layer of the first set.

[0026] By independent layers, it is understood that the layers are not bonded to one another in a binder matrix, in particular a polymer binder. Each layer is independent of the adjacent layer. The layers are thus not fixed to one another, but are free to move relative to each other. Such a ballistic protection element proves to be quite advantageous from the point of view of the user comfort of a bulletproof vest incorporating said ballistic protection element. Indeed, the fact that the layers of the first assembly are independent of one another ensures flexibility to the ballistic protection element, allowing it to adapt optimally to the movements of a user and thus guaranteeing greater comfort for said user.

[0027] Moreover, unlike existing protective elements which have a flat shape, the ballistic protective element according to the invention has a shape reproducing the curved shape of the female torso, which also contributes to the comfort for the user.

[0028] Furthermore, the ballistic protection element according to the invention advantageously allows, thanks to the addition of the second assembly, both for improved impact performance in the hollow area located between the two breasts and for reduced trauma to the chest in the event of a projectile impact. Indeed, the composition and number of layers forming the second assembly are jointly selected to reduce the rearward deformation of the ballistic protection element after impact. Injuries caused by this rearward deformation are thus limited.

[0029] Such a ballistic protection element thus advantageously provides a user with reinforced protection at the level of the female chest, while ensuring comfort of use.

[0030] The second assembly being present only at the local level of the ballistic protection element, said ballistic protection element according to the invention also presents a weight saving.

[0031] The bulletproof vest comprising a ballistic protection element according to the invention is perfectly suited for use by women.

[0032] According to particular embodiments of the invention, the ballistic protection element further meets the following characteristics, implemented separately or in each of their technically operative combinations.

[0033] In particular embodiments of the invention, the second assembly comprises a single layer. Said layer is preferably formed by a three-dimensional weave.

[0034] By the term "three-dimensional weaving", or "3D weaving", is meant a form of weaving in which at least some of the warp yarns bind weft yarns over several weft stacks.

[0035] In particular embodiments of the invention, the second assembly comprises a plurality of layers.

[0036] In one embodiment, all the layers of the second assembly are independent of each other. The fact that the layers of the first and second assemblies are independent of each other ensures greater flexibility in the ballistic protection element, allowing it to adapt better to the movements of a user and thus guaranteeing greater comfort for said user.

[0037] In another embodiment, all the layers of the second assembly are bonded to each other by a binder matrix, forming a rigid shell. The fact that the layers of the second assembly are bonded to each other advantageously makes it possible to significantly reduce rearward deformation relative to the type of ammunition to be stopped.

[0038] In another embodiment, some layers of the second assembly are bonded to each other by a binder matrix, while the other layers of the second assembly are independent. This embodiment advantageously maintains flexibility while reducing backstrap deformation.

[0039] In particular embodiments of the invention, at least one layer of the first assembly and / or the second assembly is formed of at least one, preferably a plurality, of fiber layer(s) embedded in a binder matrix, preferably a thermoplastic or thermosetting binder. The binder may be the same for both assemblies, or different for the first and second assemblies. The same applies to the fibers used to form the layers.

[0040] Preferably, the layer is formed of a plurality of fiber sheets superimposed one on top of the other and embedded in a binder matrix, preferably a thermoplastic or thermosetting binder, which ensures cohesion between the different sheets of each layer. These fiber sheets may, in particular, be unidirectional fiber sheets, stacked crosswise with respect to each other, that is to say, arranged with respect to each other in such a way that the fibers of one sheet are oriented differently from the fibers of each adjacent sheet.

[0041] In particular embodiments of the invention, at least one layer of the first assembly and / or the second assembly is formed of a fabric, in particular a woven fabric, such as taffeta, twill, or satin. When the first assembly and / or the second assembly comprises at least two layers formed of a fabric, the fabrics of the layers may be of the same basis weight or of different basis weights and / or of the same weave or of different weaves.

[0042] In particular embodiments of the invention, at least one layer of the first assembly is formed by a combination of felt and fabric.

[0043] In particular embodiments of the invention, at least one layer of the first assembly is formed by a 3D weave.

[0044] The fibers used according to the invention preferably have high strength. In particular embodiments of the invention, the fibers forming the layers of the first assembly, and / or the fibers forming the layers of the second assembly, are chosen from: - high or ultra-high molecular weight polyethylene fibers, such as fibers marketed under the names Dyneema® by DSM, Tensylon® by DuPont®, Endumax® by Teijin, Spectra by Honeywell, - aramid fibers, more specifically para-aramid (poly-para-phenylene terephthalamide), such as the fibers marketed under the names like Kevlar® by DuPont®, Twaron® or Technora by Teijin, or Gold Flex® by Honeywell, and - basalt fibers, such as the fibers marketed under the name Filava® by Isomatex.

[0045] Such high Young's modulus fibers are advantageously ultra-strong.

[0046] The binder can be chosen from polyurethanes and polyolefins, or any one of their mixtures.

[0047] Preferably, the layers of the first assembly located on the side of the female torso are made of basalt fibers. Preferably also, the layers of the second assembly are made of basalt fibers.

[0048] In particular embodiments of the invention, the second assembly is superimposed on the first assembly at the front face of the ballistic protection element. The additional thickness generated by the second assembly is thus positioned opposite the female torso, in the normal position for using the ballistic protection element. Such a configuration advantageously increases the comfort of using the ballistic protection element according to the invention.

[0049] In particular embodiments of the invention, the second assembly is superimposed on the first assembly at the rear face of the ballistic protection element.

[0050] In particular embodiments of the invention, the second assembly is placed between two successive layers of the first assembly. Such positioning of the second assembly makes it possible to embed the second assembly within the ballistic protection element and to limit the excess thickness on the front face of said ballistic protection element.

[0051] The invention also relates to a bulletproof vest incorporating a ballistic protection element according to the invention meeting one or more of the characteristics described above and / or below.

[0052] The ballistic protection element is intended to be integrated into a ventral part of the bulletproof vest, to protect the torso of a user wearing the vest.

[0053] The invention also relates to a method for manufacturing a ballistic protection element according to the invention, meeting one or more of the characteristics described above and / or below. In this manufacturing method, the shaping of the first assembly and that of the second assembly are carried out simultaneously. This manufacturing method comprises the following steps: - layering, in a suitable mold, of the layers of the first set and the second set, adding at least one release agent between each layer of the first set, - thermocompression of said layers of the first and second sets.

[0054] The mold used for the manufacturing process is shaped like the female torso.

[0055] The layer(s) of the second set is / are deposited only in coincidence with the part of the mold having the shape of the female breast.

[0056] The invention also relates to a method for manufacturing a ballistic protection element according to the invention, having one or more of the characteristics described above and / or below. In this manufacturing method, the shaping of the first assembly and the shaping of the second assembly are carried out separately.

[0057] When the second assembly consists of a single layer, the process comprises the steps of: - formatting of the first set comprising: • layering, in a suitable mold, of the layers of the first assembly, adding a release agent between each layer, • thermocompression of the layers of the first assembly, - formatting of the second set comprising: • positioning, in a suitable mold, of the layer of the second assembly, • thermocompression of the layer of the second set, - assembly of the first and second sets.

[0058] When the second assembly comprises a plurality of layers, the process comprises the steps of: - formatting of the first set comprising: • layering, in a suitable mold, of the layers of the first assembly, adding a release agent between each layer, • thermocompression of the layers of the first assembly, - formatting of the second set comprising: • layering, in a suitable mold, of the layers of the second assembly, if necessary adding a release agent between two successive layers, • thermocompression of the layers of the second set, - assembly of the first and second sets.

[0059] The mold used for the first assembly has the desired shape and surface dimensions for a female torso.

[0060] The mold used for the second assembly can have the desired shape and surface dimensions for a female breast.

[0061] In another embodiment of the mold used for the second assembly, the mold is the one used to shape the first assembly. In this case, the Layers of the second set are deposited only in coincidence with the part of the mold that has the shape of the female breast.

[0062] Regardless of the manufacturing process, the fiber-based layers forming part of the first and second assemblies of the ballistic protection element according to the invention are initially in the form of fiber(s) embedded in a binder matrix, in particular a thermoplastic or thermosetting binder, the binder of each layer is softened during the thermocompression step, then cooled, each layer retaining its shape.

[0063] The release agent advantageously prevents the layers from sticking together during the thermocompression operation. The layers are thus independent of each other.

[0064] The thermocompression operation can be carried out by press or by autoclave.

[0065] The parameters of the thermocompression operation may vary depending on the materials used, and in particular the binder in each layer, especially the thermoplastic or thermosetting binder, particularly with regard to the thermocompression temperature. When the binder is formed from a mixture of several compounds, the temperature used is preferably greater than or equal to the highest softening temperature of these compounds.

[0066] In one example, when the binder is a polyurethane, the softening temperature of the binder is approximately 100 to 135 °C.

[0067] The pressure can vary between 5 and 300 bars.

[0068] According to particular embodiments of the invention, the manufacturing processes of the ballistic protection element also meet the following characteristics, implemented separately or in each of their technically operative combinations.

[0069] In examples of implementation of the invention, the addition of the release agent consists of applying a release film or spraying with a non-stick spray.

[0070] In examples of implementation of the invention, when the release agent is a release film, a step of removing said release film from the first set and / or the second set can be carried out after the thermocompression step. Brief description of the figures

[0071] The invention will be better understood upon reading the following description, given by way of non-limiting example, and made with reference to the figures which represent:

[0072] Figure 1 illustrates an isometric perspective and exploded view of a ballistic protection element according to a first embodiment,

[0073] Figure [Fig. 2] illustrates an exploded side view of the ballistic protection element of Figure [Fig. 1],

[0074] [Fig.3] illustrates a front view of the ballistic protection element of [Fig.1]. Description of the implementation methods

[0075] A ballistic protection element 100 according to a particular embodiment of the invention is illustrated in Figures 1 to 3. The ballistic protection element 100 will hereafter simply be referred to as the protection element.

[0076] The protective element 100 is intended for the protection of a female torso 500.

[0077] This protective element 100 has dimensions adapted to cover the female torso. The torso is understood to be the region of the human body covering the chest and abdomen.

[0078] The protective element 100 has a face, called the rear face 101, and an opposite face, called the front face 102. In the worn configuration, the rear face of the protective element 100 is intended to be positioned opposite the female torso and the front face 102 is intended to be positioned opposite the female torso.

[0079] As seen in [Fig.3], the protective element 100 has a curved shape adapted to fit the contours of the female torso 500. The protective element 100 has a shape reproducing the shape of the female torso 500.

[0080] The protective element 100 may have an upper notch 103 shaped to fit the shape of the neck. It may have two lateral notches 104 shaped to fit the contour of the two arms.

[0081] The protective element 100 comprises, within its thickness and over its entire surface, a first assembly 120 of a plurality of layers, or plies, 121 made of fibers. The different layers 121 of the first assembly 120 are not bonded to one another, but are free to move relative to each other. The fibers used for each layer 121 of said first assembly are chosen to be suitable for providing ballistic protection. They are preferably high or ultra-high molecular weight polyethylene fibers, para-aramid fibers, or basalt fibers.

[0082] The fact that the layers 121 of the first set 120 are not linked together guarantees flexibility to said first set.

[0083] The first assembly 120 makes up the general shape of the protective element 100.

[0084] In the non-limiting example of Figures 1 and 2, the first assembly 120 comprises nine distinct layers 121.

[0085] The first assembly 120 has surface dimensions suitable for covering the female torso 500. All the layers 121 of the first assembly 120 advantageously have substantially identical surface dimensions. The first Set 120 advantageously presents a shape that closely reproduces the shape of the female torso.

[0086] As illustrated in [Fig. 1] and 2, each layer 121 of the first assembly 100 may have an upper notch 122 which together form the notch 103 of the protective element. Each layer 121 may have two lateral notches 123, each lateral notch of each layer together forming a lateral notch 104 of the protective element 100.

[0087] In one embodiment, a layer 121 of the first assembly 100 is formed of a plurality of layers of fibers superimposed on one another, and embedded in a binder matrix, preferably a thermoplastic or thermosetting binder, which ensures cohesion between the different layers of each layer.

[0088] These fiber mats can in particular be unidirectional fiber mats, stacked crosswise with respect to each other, that is to say arranged with respect to each other in such a way that the fibers of one mat have a different orientation from the fibers of each adjacent mat.

[0089] In another embodiment, a layer 121 of the first assembly 100 is formed of a fabric, in particular a warp and weft fabric, such as a taffeta, a twill, a satin.

[0090] In this example, the term fabric is understood to mean that it is formed by a classic weave called two-dimensional, or "2D weave", in other words a form of weaving in which each warp thread passes from one side to the other of threads of a single weft.

[0091] In another embodiment, a layer 121 of the first set 100 is formed by a combination of felt and fabric, assembled by needle punching, such as for example the CoreMatrix® complex.

[0092] In another embodiment, a layer 121 of the first set 100 is formed by a 3D weave.

[0093] It is clear from the description that the first assembly may comprise identical layers and / or different layers. For example, the first assembly 120 may comprise only layers 121 formed either of a plurality of fiber plies, or of a fabric, or of a combination of felt and fabric, or of a 3D weave. In another example, the first assembly 120 may comprise layers 121 formed of a plurality of fiber plies, and / or of a fabric, and / or of a combination of felt and fabric, and / or of a 3D weave. When the first assembly comprises at least two layers formed of a fabric, the fabrics of the layers may be of the same basis weight or of different basis weights and / or of the same weave or of different weaves.

[0094] The protective element 100 further comprises, in its thickness and on a part of its surface, a second set 130 of at least one layer 131 based on fibers.

[0095] The fibers used for at least one layer 131 of the second assembly 130 are chosen to be suitable for providing ballistic protection. As with the first assembly 120, these are preferably high or ultra-high molecular weight polyethylene fibers, para-aramid fibers, or basalt fibers.

[0096] The second assembly 130 has surface dimensions adapted to cover only the female breast. When the second assembly 130 has several layers 131, all the layers 131 of the second assembly 130 advantageously have substantially identical surface dimensions.

[0097] The second set 120 advantageously presents a shape that substantially reproduces the female breast.

[0098] At least one layer 131 of the second set may have an upper notch (not visible in the figures) of a shape similar to the upper notch 123 of the layers 121 of the first set 120.

[0099] In a first configuration of the second set, said second set comprises a single layer 131.

[0100] In this first configuration, layer 131 is preferentially formed by a 3D weave.

[0101] In a second configuration of the second set, said second set comprises a plurality of layers 131.

[0102] In the non-limiting example of Figures 1 and 2, the second set 130 comprises three layers 131.

[0103] In a first version of this second configuration, the different layers 131 of the second set 130 are not fixed to each other, but free to move relative to each other.

[0104] The fact that the layers 131 of the second set 130 are not linked together guarantees flexibility to said second set.

[0105] In addition, the independence of both the layers of the first set 120 and the second set 130 provides flexibility to the protective element, thus offering better comfort of use to the user.

[0106] In a second version of this second configuration, the various layers 131 of the second assembly 130 are bonded to each other in a binder matrix, in particular a polymer binder. They are not free to move relative to each other. The rigidity of the second assembly is increased, which allows for a significant reduction in backstrap deformation.

[0107] In a third version of this second configuration, certain layers 131 of the second set 130 are bonded to each other in a binder matrix, in particular a polymer binder matrix, and the other layers 131 of the second set 130 are not bonded to each other. Preferably, certain layers 131 of the The second set can be bonded together in pairs or trios within a binder matrix. This third version advantageously provides some firmness to the sensitive area of ​​the female breast.

[0108] In an example of an embodiment of this second configuration of the second assembly, a layer 131 of the second assembly 130 is preferably formed of a plurality of layers of fibers superimposed on one another, and embedded in a binder matrix, preferably a thermoplastic or thermosetting binder, which ensures cohesion between the different layers of each layer.

[0109] These fiber mats can in particular be unidirectional fiber mats, stacked crosswise with respect to each other, that is to say arranged with respect to each other in such a way that the fibers of one mat have a different orientation from the fibers of each adjacent mat.

[0110] In another example of an embodiment of this second configuration of the second assembly, a layer 131 of the second assembly 130 is formed of a fabric, in particular a warp and weft fabric, such as a taffeta, a twill, a satin.

[0111] Adding the second set 130, regardless of the configuration, to the protective element enhances protection at the female chest when worn. The composition and number of layers forming the second set 130 are jointly selected to minimize rear deformation of the protective element after impact.

[0112] Preferably, the layers 121 of the first assembly 120 intended to be positioned on the side of the female chest are preferably chosen to reduce the rear deformation of the ballistic protection element after impact. For example, the layers 121 are preferably formed of either a fabric, a combination of felt and fabric, or a 3D weave.

[0113] Preferably, the layers of the first assembly intended to be positioned opposite the female breast are preferably chosen to rapidly stop munitions (increasing stopping power). The layers 121 are preferably formed of a plurality of fiber plies.

[0114] In a preferred embodiment of the protective element 100, as illustrated in Figures 1 and 2, at least one layer 131 of the second set 130 is placed between two adjacent layers of the first set 120.

[0115] In another embodiment of the protective element 100, not shown in the figures, at least one layer 131 of the second assembly 130 is superimposed on all the layers of the first assembly 120, at the level of the front face 102 of said protective element 100.

[0116] In another embodiment of the protective element 100, not shown in the figures, at least one layer of the second assembly 130 is superimposed on the set of layers of the first set 120, at the level of the rear face 101 of said protective element 100.

[0117] In another embodiment of the protective element 100, not shown in the figures, where the second assembly 130 comprises a plurality of layers, a portion of the plurality of layers 131 of the second assembly 130 is placed between two successive layers 121 of the first assembly 120, and at least another portion of the layers 131 of the second assembly 130 is placed between two other successive layers 121 of the first assembly 120. Regardless of the embodiment of the protective element 100, a layer 121 of the first assembly 120 and a layer 131 of the second assembly 130 adjacent to said layer 121 of the first assembly 120 are independent of each other. In other words, each layer 121 of the first assembly 120 that is adjacent to a layer 131 of the second assembly is independent of said layer 131 of the second assembly.

[0118] Thus, as illustrated for example in Figures 1 and 2, when the second set 130 is intercalated between two layers 121 of the first set 120, said two layers of said first set are each independent of the layer 131 of the second set to which they are adjacent.

[0119] By way of example, a protective element 100 according to the invention can be constituted in the following way. The first set 120, for example, comprises 22 layers 121, arranged in a first stack of 6 layers 121 stacked one on top of the other and a second stack of 16 layers 121 stacked one on top of the other. The second set 130 comprises 10 layers 131 stacked one on top of the other. The second set 130 is inserted between the first and second stacks of the first set 120. The second stack is positioned opposite the female torso. The first stack of the first assembly 120 comprises 6 layers based on ultra-high molecular weight polyethylene (UHMW-PE) fibers. Each of the 6 layers is formed by superimposing at least two sheets of unidirectional fibers, the fiber sheets being oriented differently relative to each other, and embedded in a thermoplastic polymer binder matrix, in particular polyurethane. The second stack of the first assembly 120 comprises 6 layers of ultra-high molecular weight polyethylene (UHMW-PE) fibers and 10 layers of para-aramid fibers. The 6 polyethylene fiber layers are positioned opposite the female torso. Each of the 6 polyethylene fiber layers is formed from a warp and weft fabric, with the fabric of each layer being different. The 10 para-aramid fiber layers are each formed by layering at least two sheets of fibers. unidirectional, the fiber sheets being oriented differently from each other, and embedded in a thermoplastic polymer binder matrix, in particular polyurethane. The second assembly consists of 10 layers made of superimposed para-aramid fibers. The 10 polyethylene fiber layers are each formed by a warp and weft fabric, with each layer being different. The same type of binder is used for the 121 layers of the first set 120 and the 131 layers of the second set 130, although the grade of the particular polymer binder may differ between the first set 120 and the second set 130.

[0120] All of these characteristics, given simply as an example and in no way limiting the invention, make it possible to obtain a ballistic protection element intended to protect individuals against handguns, hunting rifles and bladed weapons.

[0121] The protective element 100 may also include a layer, called a comfort layer, located on the rear face 101 of the protective element 100 (layer not shown in the figures). The comfort layer is at least sized to match the layers 131 of the second assembly 120. Preferably, the comfort layer is sized to match the layers 131 of the second assembly 120. Such a comfort layer advantageously provides additional comfort and also helps to reduce trauma.

[0122] Such a comfort layer can be made of foam, natural or synthetic, for example closed-cell polyurethane foam.

[0123] The protective element 100 is conventionally placed in a protective cover, the dimensions of which are adapted to said protective element. Such a protective cover can be made of any type of material, in particular coated polyamide fabric, flexible plastic film, etc., or can be obtained by overmolding by injection or spraying of an organic polymer, or by any other conventional means known to those skilled in the art. Such a cover is preferably waterproof and impermeable to ultraviolet radiation.

[0124] Two methods for manufacturing a ballistic protection element 100 according to the invention are now described.

[0125] In a first manufacturing process, the shaping of the first set 120 and that of the second set 130 are carried out together.

[0126] The first manufacturing process includes a first step of superimposing the layers of the first set 120 and the second set 130.

[0127] In a first example of implementing this first step, each layer 121 of the first assembly 120 is deposited in a mold. This mold has the The desired shape and surface dimensions for a female torso are defined. Between each application of a layer 121, a release agent is added. A release agent is also previously added between the mold and the layer 121 of the first assembly 120 that is in contact with the mold. The layer(s) 131 of the second assembly 130 is / are then applied to the first assembly 120, coinciding with the portion of the mold that has the shape of the female breast. When the second assembly 130 has several layers 131, a release agent may be added between each application of a layer 131 of the second assembly 130. A release agent is also added between the adjacent layers of the first assembly 120 and the second assembly 130. This first example of implementation is representative of a protective element whose second assembly is located at the rear face 101 of the protective element 100.

[0128] In a second example of implementing this first step, the layer(s) 131 of the second assembly 130 is / are deposited in a mold. This mold has the desired shape and surface dimensions for a female torso. Each layer 131 of the second assembly 130 is deposited only in coincidence with the part of the mold having the shape of the female breast. Between each deposit of a layer 131 of the second assembly 130, a release agent may be added. A release agent has also been previously added between the mold and the layer 131 of the second assembly 130 that is in contact with the mold. Each layer 121 of the first assembly 120 is then deposited onto the second assembly 130, in the mold. Only a surface part of the first set 120 is superimposed on the second set 130. Between each application of a layer 131 of the first set 130, a release agent is added.A release agent is also added between the layer of the first assembly 120 and that of the second assembly 130, which are adjacent. This second example of implementation is representative of a protective element where the second assembly is located at the front face 102 of the protective element 100.

[0129] In a third example of implementing this first step, a portion of the layers 121 of the first set 120 is deposited into a mold. This mold has the desired shape and surface dimensions for a female torso. Between each deposit of a layer 121 of the first set 120, a release agent is added. A release agent has also been previously added between the mold and the layer of the first set 120 that is in contact with the mold. The layer(s) 131 of the second set 130 is / are then deposited onto the layers 121 already deposited from the first set 120, coinciding with the portion of the mold having the shape of the female breast. Between each deposit of a layer 131 of the second set 130, a release agent may be added. A release agent is A release agent is also added between the adjacent layers 121 of the first set 120 and those of the second set 130. The remaining layers 121 of the first set 120 are then deposited onto the second set 130. Between each deposit of a layer 131 of the first set 130, a release agent is added. A release agent was also previously added between the layer of the second set 130 and that of the first set 120. This third example of implementation is representative of a protective element 100 in which the second set 130 is placed between two layers of the first set 120.

[0130] Regardless of the implementation example of this first step, the addition of the release agent may consist of applying a release film. The release film is, for example, made of polytetrafluoroethylene (PTFE) or polyethylene tetrafluoroethylene (ETFE).

[0131] Regardless of the example of implementation of this first step, the addition of the release agent may consist of spraying a spray, for example a silicone spray or a PTFE spray, onto the layer.

[0132] The first process then includes a second step of thermocompression of all the layers of the first and second assemblies.

[0133] This second thermocompression step can be carried out in an autoclave or under a press, preferably by applying sufficient pressures and at a temperature above the softening temperature of the thermoplastic or thermosetting binder of each layer.

[0134] In one example, the pressure can vary between 5 and 300 bars.

[0135] In one example, when the binder is a polyurethane, the softening temperature of the binder is approximately 125 °C.

[0136] At the end of this second stage of the first process, after cooling and hardening of the binder, all the layers are shaped.

[0137] The release agent between each layer advantageously prevents the layers from sticking together. Thus, at the end of the thermocompression step, the different layers are not bonded to each other.

[0138] When the release agent is a release film, the first process may include a third step of removing said release film from each layer of the first and / or second assembly. Once the release films have been removed, the layers are stacked on top of each other again and then placed in a protective cover.

[0139] In a second manufacturing process, the shaping of the first set 120 and that of the second set 130 are carried out separately.

[0140] The second manufacturing process includes a first step of shaping the first assembly 120.

[0141] This first step includes a first sub-step of superimposing the layers 121 of the first set 120.

[0142] In an example of implementing this first substep, each layer 121 of the first assembly is deposited into a mold. This mold has the desired shape and surface dimensions for a female torso. Between each deposit of a layer 121 of the first assembly 120, a release agent is added. A release agent has also been previously added between the mold and the layer of the first assembly 120 that is in contact with the mold.

[0143] The first step then includes a second sub-step of thermocompression of the layers 121 of the first assembly 120.

[0144] This second thermocompression substep can be carried out in an autoclave or under a press, preferably by applying sufficient pressures and at a temperature above the softening temperature of the thermoplastic or thermosetting binder of each layer of the first assembly.

[0145] At the end of this first step, after cooling under pressure and hardening of the binder, all the layers of the first assembly are shaped.

[0146] The release agent between each layer advantageously prevents the layers of the first assembly from sticking together. Thus, at the end of the thermocompression step, the different layers of the first assembly are not bonded together.

[0147] The second manufacturing process includes a second shaping step of the second assembly 130.

[0148] When the second assembly 130 comprises a single layer 131, this second step comprises, a first sub-step of depositing the layer 131 into a mold.

[0149] When the second set 130 comprises a plurality of layers 131, this second step comprises a first substep of superimposing the layers 131 of the second set 130.

[0150] In an example of implementation of this first substep, each layer 131 of the second set 130 is deposited in a mold.

[0151] Between each application of a layer 131 of the second assembly 130, a release agent may be added. A release agent has also been previously added between the mold and the layer of the second assembly 130 that is in contact with the mold.

[0152] In one embodiment of the mold, the mold may have the desired shape and surface dimensions for a female breast.

[0153] In one embodiment of the mold, the mold is the one used to shape the first assembly. In this case, the layer or layers of the second assembly is / are deposited, only in coincidence with the part of the mold presenting the shape of the female breast.

[0154] The second step then comprises a second sub-step of thermocompression of the layers 131 of the second assembly 130.

[0155] This second thermocompression substep can be carried out in an autoclave or under a press, preferably by applying sufficient pressures and at a temperature above the softening temperature of the thermoplastic or thermosetting binder of each layer of the second assembly.

[0156] At the end of this second stage, after cooling under pressure and hardening of the binder, all the layers of the second assembly 130 are shaped.

[0157] When a release agent is used between two layers 131 of the second assembly 130, it advantageously prevents the two layers of the second assembly from sticking together.

[0158] The order of implementation of the first and second steps is not imposed and, according to the process, can be carried out in the reverse order of the order described or carried out simultaneously without changing the result of said steps.

[0159] When the release agent is a release film, the second process may include a step of removing said release film from each layer of the first assembly and / or the second assembly.

[0160] In a step subsequent to the first and second steps, the layers of the two sets are superimposed on each other.

[0161] In an example implementation, the layer(s) 131 of the second set 130 is / are positioned between two successive layers 121 of the first set 120.

[0162] In another example of implementation, the layer(s) 131 of the second set 130 is / are positioned on or below the layers 121 of the first set 120.

[0163] The protective element is then placed in a protective cover, of a size adapted to said protective element.

[0164] The ballistic protection element 100 according to the invention can be integrated into a conventional bulletproof vest itself, in the ventral part thereof. The resulting vest is advantageously easy and comfortable for a woman to use, and it provides protection against projectiles fired from handguns, shotguns, or edged weapons.

Claims

1.

2. Demands Ballistic protection element (100) intended for the protection of a female torso (500), said ballistic protection element: - presenting a first face, called the rear face (101), intended to be positioned opposite the female torso, and a second opposing face, called the front face (102), and - comprising, within its thickness, a first set (120) of a plurality of layers (121) based on fibers chosen from high or ultra-high molecular weight polyethylene fibers, para-aramid fibers and basalt fibers, with surface dimensions adapted to cover the female torso, characterized in that the first set (120) has a shape reproducing the shape of the female torso, in that the ballistic protection element (100) comprises a second assembly (130) of at least one layer (131) made of fibers selected from high or ultra-high molecular weight polyethylene fibers, para-aramid fibers and basalt fibers, with surface dimensions adapted to cover only the female breast, said second assembly (130) having a shape reproducing the shape of the female breast, in that the layers (121) of the first set (120) are independent of each other, and in that a layer (131) of the second set (130) adjacent to a layer (121) of the first set (120) is independent of said layer of the first set (120). Ballistic protection element (100) according to claim 1, wherein the second assembly (130) comprises a plurality of layers (131) and wherein: - all the layers (131) of the second set (130) are independent of each other, or - all the layers (131) of the second assembly (130) are bonded to each other by a binder matrix, or, - certain layers (131) of the second assembly (130) are bonded to each other by a binder matrix and the other layers (131) of the second set (130) are independent.

3. Ballistic protection element (100) according to claim 1 in which the second assembly (130) comprises a single layer (131), preferably formed by a three-dimensional weave.

4. Ballistic protection element (100) according to any one of the preceding claims, wherein the second assembly (130) is either superimposed on the first assembly (120) at the front face (101) of said ballistic protection element (100), or superimposed on the first assembly (120) at the rear face (102) of said ballistic protection element (100).

5. Ballistic protection element (100) according to any one of claims 1 to 3, wherein the second assembly (130) is placed between two successive layers (121) of the first assembly (120).

6. Bulletproof vest, characterized in that it incorporates, at the level of a ventral part of said bulletproof vest, a ballistic protection element (100) according to any one of claims 1 to 5.

7. A method for manufacturing a ballistic protection element (100) according to any one of claims 1 to 5, characterized in that it comprises the steps of: - superimposing, in a suitable mold, the layers of the first assembly (120) and the second assembly (130), adding at least one release agent between each of the layers of the first assembly, - thermocompression of said layers of the first and second assemblies (120, 130).

8. A method for manufacturing a ballistic protection element (100) according to any one of claims 1 to 5, characterized in that it comprises the steps of: - shaping the first assembly (120) comprising: • superimposing, in a suitable mold, the layers (121) of the first assembly (120), adding a release agent between each layer, • thermocompression of the layers (121) of the first assembly,

9.

10. - formatting of the second set (130) comprising, when the second set comprises a plurality of layers: • superposition, in a suitable mold, of the layers (131) of the second assembly (130), where necessary by adding a release agent between two successive layers, • thermocompression of the layers (121) of the second assembly, - assembly of the first and second sets (120, 130). Method of manufacturing a ballistic protection element (100) according to one of claims 7 or 8 wherein the addition of the release agent consists of the application of a release film or the spraying of an anti-stick spray. Method of manufacturing a ballistic protection element (100) according to any one of claims 7 to 9 comprising, where the release agent is a release film, a subsequent step of removing said release film from the first assembly (120) and / or the second assembly (130).

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