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Chain mail, notably for protective equipment
Inactive Publication Date: 2018-03-08
MANULATEX FRANCE
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Summary
Abstract
Description
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Application Information
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Problems solved by technology
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Benefits of technology
The invention is a chain mail that is resistant to deformation and wear and tear, even during use and maintenance. It also has a consistent and repeatable mechanical resistance. The chain mail can be designed for optimal safety and can offer a compromise between resistance and weight. Overall, the invention provides a reliable and safe solution for protecting individuals wearing personal protective equipment.
Problems solved by technology
However, generally, those skilled in the art consider that the techniques for manufacturing chain mails, and in particular the required operations of cutting, stamping, forming, bending and / or welding metal particles, limit the possibilities of using very hard and very resistant metals.
However, document WO-2013 / 007298 does not disclose a chain mail whereof the performance is optimal with regards to the mechanical tensile strength (Rm) and abrasion.
These intrinsic characteristics thus do not make it possible to lower the wire diameter to lower than 0.47 mm, then generating problems of weight with the equipment.
Those skilled in the art furthermore know the risk of seeking to excessively increase the mechanical tensile strength (Rm) of the wire, under penalty of obtaining a brittle material due its low capacity for elongation at break and therefore imperfect to meet these standards.
Method used
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first embodiment
[0109] the chain mail rings have an outer diameter between 3.8 mm and 4.2 mm, limits included, and are made from stainless steel wire whereof the diameter is between 0.38 mm and 0.6 mm, limits included.
[0110]In this case, preferably, the rings are made from stainless steel wire whereof the diameter is between:
[0111]0.38 mm and 0.5 mm, limits included, preferably between 0.38 mm and 0.45 mm, limits included; or
[0112]0.45 mm and 0.6 mm, limits included, preferably between 0.5 mm and 0.6 mm, limits included.
[0113]Without being limiting, the rings comprise a tensile strength that is upper than 300 N, with preferably:
[0114]a tensile strength between 300 and 400 N, carried out with a wire of a diameter of 0.4 mm and
[0115]a tensile strength between 500 and 600 N, carried out with a wire of a diameter of 0.5 mm.
[0116]In this framework, for the carrying out of a glove or of an apron for example, the chain mail rings have an outer diameter of 4 mm, and are made from stainless steel wire where...
second embodiment
[0122] the rings have an outer diameter between 6.5 mm and 8 mm, limits included, and are made from stainless steel wire whereof the diameter is between 0.6 mm and 1 mm, limits included.
[0123]Such a chain mail is in particular interesting in ballistic uses, in particular in the form of a weapon pack added to a ballistic solution.
[0124]In this case, this chain mail is used in combination with a multilayer complex of technical fabric (aramid fibres, high-tenacity polyester, etc.).
[0125]The rings of this chain mail can also be carried out with a wire with a reduced diameter, while still retaining suitable performance qualities. The rings then advantageously comprise a usual outer diameter but an increased inner diameter.
[0126]Such a chain mail then comprises a weight that is substantially reduced due to the synergy between:
[0127]the reduction in the weight of each ring, but also
[0128]the decrease in the density of the rings per surface unit.
[0129]Generally, the invention also relates t...
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Abstract
Disclosed is a chain mail constituted of a lattice of interlinked metal rings, in particular for personal protective equipment. The chain mail rings are made using a stainless steel wire whereof the mechanical tensile strength (Rm) is between 1,600 and 2,550 N / mm2, limits included.
Description
TECHNICAL FIELD TO WHICH THE INVENTION RELATES[0001]This invention relates to the general field of chain mail, in particular for protective equipment (in particular personal protective equipment of the gloves, aprons, vests, etc. type).TECHNOLOGICAL BACKGROUND[0002]Personal protective equipment for certain industries (in particular industries that use cutlery articles, for example the meat industry), or for the protection against aggressions from projectiles (bullets, shrapnel, etc.) or weapons, frequently comprise parts made of metal particles.[0003]These metal particles consist advantageously in chain mail fabrics formed by an interlinking of metal rings.[0004]Such personal protective equipment is appreciated in particular for its intrinsic qualities in resisting cuts and perforation.[0005]Given the protective function sought, it is desired to obtain metal webs that have optimal safety and resistance characteristics.[0006]These performance characteristics are for example defined i...
Claims
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Application Information
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