Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D19/00—Gloves
  • A41D19/015—Protective gloves
  • A41D19/01505—Protective gloves resistant to mechanical aggressions, e.g. cutting. piercing
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D31/00—Materials specially adapted for outerwear
  • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
  • A41D31/24—Resistant to mechanical stress, e.g. pierce-proof
  • A41D31/245—Resistant to mechanical stress, e.g. pierce-proof using layered materials
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B42/00—Surgical gloves; Finger-stalls specially adapted for surgery; Devices for handling or treatment thereof
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B1/00—Layered products having a non-planar shape
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
  • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
  • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
  • B32B5/024—Woven fabric
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
  • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
  • B32B9/025—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch comprising leather
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
  • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2255/00—Coating on the layer surface
  • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
  • B32B2262/02—Synthetic macromolecular fibres
  • B32B2262/0276—Polyester fibres
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
  • B32B2262/06—Vegetal fibres
  • B32B2262/062—Cellulose fibres, e.g. cotton
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2274/00—Thermoplastic elastomer material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2437/00—Clothing
  • B32B2437/02—Gloves, shoes

Definitions

• the present invention relates to a flexible laminate of high puncture and puncture resistance, such as a glove, which comprises at least one inner metal layer forming a barrier to these punctures and perforations.
• the invention thus applies more particularly but not exclusively to a glove for industrial use consisting of this laminate, being also applicable to other flexible three-dimensional manufactured articles or not having such a resistance, such as tire casings.
• gloves of fibrous structure are typically based on a knit of textile fibers (eg aramid fibers) impregnated or not with an elastomer on at least a part of their surface, and they have the main disadvantage of limiting simply the risk of puncture by fine points without removing it;
• textile fibers eg aramid fibers
• these gloves which may be based on a textile knit or a polymeric layer, and which have in some places only rigid plates for example steel
• the stainless steel having a high puncture resistance has the particular disadvantage that it only partially protects the user's hand and has a reduced ability to fold because of the relatively large size of these plates, which can impede the freedom of movement. movement of the fingers and thus considerably alter the precision of the gestures
• glas of lamellar structure these gloves, which are for example based on amorphous metal lamellae as described in document FR-A-2 808 975 in the name of the Applicant, appear to be the best suited to meet the requirements of the present invention. requirements for use and resistance to pitting, while still requiring the implementation of a relatively complex manufacturing process and therefore expensive.
• An object of the present invention is to provide a flexible laminate, high resistance to punctures and perforations and intended in particular to form a glove or a tire envelope, the laminate comprising at least one metal inner layer barrier to said punctures and perforations, said or each layer having a thickness of less than 50 ⁇ m, which makes it possible in particular to obtain a glove for industrial use to overcome the aforementioned drawbacks by providing a very effective protection against the risk of punctures and perforation, including punctures by the the finest points, without penalizing the flexibility of this laminate.
• a laminate according to the invention is such that said or each layer comprises at least one metal sheet of continuous structure which has a width greater than 10 mm and / or a length greater than 50 mm and which has both following properties, measured at 20 ° C:
• metal sheet (s) continuous (s) continuous (s) that characterize the laminates of the invention are characterized by remarkable mechanical properties including including the three properties (i) to (iii) listed above.
• these sheets also have excellent curvature which makes them almost elastically able to withstand curvatures around a radius proportional to their thickness.
• the Applicant has shown that it is possible in particular to obtain, thanks to these continuous metal sheets having these mechanical properties, gloves combining in use qualities of high resistance to perforation and especially to pitting (the resistance to perforation being measured in accordance with the standard
• NF EN 388 of April 2004 or ASTM F 1342 of 2005 has very satisfactory qualities of flexibility, in spite of the incompatibility that usually present between these two qualities for a glove.
• this structure of continuous sheet (s) for the or each metal layer of the laminate according to the invention is clearly distinguishable from the discontinuous slatted structure described in document FR-A-2 808 975 cited above. which makes it possible in particular to obtain satisfactory results in terms of resistance to punctures and perforations with a reduced manufacturing cost in comparison with that inherent in the use of these lamellae.
• the or each metal layer that the laminate of the invention can be indifferently substantially flat (ie two-dimensional) or three-dimensional.
• said sheet or at least one of said sheets may have a width greater than 20 mm and / or a length greater than 70 mm.
• said sheet or at least one of said sheets has both the following properties, measured at 20 ° C:
• said or each layer may be formed of an ordered juxtaposition of several of said sheets which extend adjacently with each other with respect to all or part of an external face of the laminate.
• the laminate comprises a plurality of these layers at least partially superimposed and which are preferably two in number. Indeed, the breaking force varies linearly depending on the number of layers used.
• the or each sheet is made of a material selected from the group consisting of carbon steels, low alloy steels, stainless steels and hard nickel alloys and preferably it is made of a cold-rolled and aged austenitic stainless steel, such as a steel with the trademark Sandvik Nanoflex®, for example grade "1 RK91".
• said or each sheet is made of an amorphous metal or metal alloy, for example based on iron, such as a metal glass with the trademark "Met Glass 2605 S01".
• an amorphous metal or metal alloy is meant in the sense of the present invention sheets obtained by the technique of hyperemperature of a metal or a metal alloy.
• This technique which is described in particular in documents FR-A-2 700 282 and FR-A-2 732 628, consists in sending a liquid jet of molten metal or alloy to a cooled surface in rapid traverse such as a wheel, such that the metal or alloy spreads on this surface in a film of very small thickness, cools very rapidly and thus solidifies in an amorphous state.
• a glove of high resistance to punctures and perforations according to the invention is such that it consists of a laminate as defined above.
• this glove may comprise said metal layer as a single internal metal layer or, preferably, an at least partial superposition of two of said metal layers.
• said or each metal layer may be formed of an ordered juxtaposition of several of said sheets which extend adjacently and spaced apart, facing at least one palmar face of the glove.
• these sheets juxtaposed within the or each metal layer of the glove extend opposite the only palmar surface of the glove (i.e. not facing the dorsal surface of this glove).
• this juxtaposition of sheets may be two-dimensional or three-dimensional.
• said or each metal layer may comprise between 10 and 20 of said sheets which substantially cover the entire palmar surface of the glove including the hand clip and which may further cover the tops of the nails, including for example a first group of leaves covering the palm of said palmar face and a second group of leaves which are smaller than those of first group and which are distributed on each of the fingers of this palmar face.
• the glove may advantageously comprise two metal layers, said sheets juxtaposed with the or each layer each having a thickness of less than 40 microns. As explained above, this two-layer metal structure then provides for this glove a very satisfactory compromise between a very high resistance to sting and good flexibility in use.
• the glove may advantageously comprise a ply bonded with a preferably screened textile fabric which is applied to at least one of the two faces of the said or each metal layer, this glued sheet being one hand able to minimize the noise generated by the folds or curvatures of said or each layer during the handling of the glove, and on the other hand to obtain greater flexibility.
• Said or each sized sheet may be for example based on polyester or cotton, such as a sheet of "double-sided adhesive” type sold under the name SUPERPROTECT® or SUPERTAPE®.
• the textile fabric of the or each bonded web may be based on another natural or synthetic polymer, such as a high tenacity polyethylene.
• this glove according to the invention then advantageously has both a high resistance to punctures and perforations, a satisfactory flexibility and also an ability to be handled in a virtually silent manner (ie with a noise minimized during the movements of the fingers of the user).
• the glove incorporating said or each glued sheet also has mechanical performances according to the standard NF EN 388 of April 2004 which are improved.
• the glove may comprise a stack of said metal sheets which respectively have mutually shifted cuts or lights, which are designed to define fold or seam lines of the glove in use.
• the glove may advantageously comprise at least two layers of said metal sheets which are arranged in an offset manner and each sheet of one of these layers is connected to at least one of sheets of another adjacent layer by a flexible binder, so that the sheets of each layer can move relative to those of the adjacent layer.
• the glove may comprise:
• a flexible outer coating of the glove which is for example made of textile knit, leather or imitation leather, rubber or a thermoplastic material, and to the inside of said glove; or said layer (s), an inner coating absorbing the glove intended to cover the user's hand and for example based on a woven or non-woven textile fabric capable of absorbing perspiration.
• a tire envelope according to the invention consists of a laminate as defined above.
• this tire envelope incorporates said layer (s) metal (s) in its tread and / or in its sidewalls.
• a laminate according to the invention can also be used to form other three-dimensional articles or not likely to be subjected to punctures or perforations, such as shoe soles (in particular boots), non-limiting.
• articles of clothing such as boots, cuffs, aprons, vests, helmets, hoods, as well as "geological" textiles may be mentioned, in a non-limiting manner.
• Other characteristics, advantages and details of the present invention will emerge on reading the following description of several examples of embodiment of the invention, given for illustrative and not limiting, said description being made with reference to the accompanying drawings, among which: FIG.
• FIG. 1 is a plan view showing the inside of a structure laminated to a metal layer of continuous sheets, on the palmar surface of a glove according to an exemplary embodiment of the invention, this glove being illustrated substantially 1 is a diagrammatic sectional view of the laminated structure with two metal layers of a glove according to a variant of the invention also incorporating two internal and external coatings, FIG. schematic sectional view illustrating a variant of the layered two-layer structure of FIG. 2, in which the sheets of these layers are connected together by FIG. 4 is a sectional view of a device used for puncture and perforation tests and carried out on specimens according to the invention and on "control" test pieces, FIGS.
• FIG. 5 and 6 are respectively two photographs illustrating according to side views (after rotation of a quarter turn) the geometry of the piercing end of each hypodermic needle used for the puncture tests performed on these specimens
• Figure 7 is a schematic sectional view of a test piece according to an example of the invention based on a laminate with a single metal layer
• FIG. 8 is a schematic sectional view of a specimen based on a glove surmounting a laminate according to a variant of the invention has two superposed metal layers
• the glove 1 shown cutaway in Figure 1 is formed of a three-dimensional laminate having, opposite its single palmar surface, a single inner metal layer forming a barrier to punctures and perforations and consisting of an ordered juxtaposition of continuous metal sheets 2 which extend adjacently and spaced from one another with respect to the zone of this palmar face corresponding to the palm P and to the five fingers D1 to D5 of the hand of a user.
• FIG. 1 is formed of a three-dimensional laminate having, opposite its single palmar surface, a single inner metal layer forming a barrier to punctures and perforations and consisting of an ordered juxtaposition of continuous metal sheets 2 which extend adjacently and spaced from one another with respect to the zone of this palmar face corresponding to the palm P and to the five fingers D1 to D5 of the hand of a user.
• the glove 1 shows an absorbent inner liner 3 of the glove 1 which is intended to cover the user's hand and which is for example based on a woven or non-woven textile fabric capable of absorbing perspiration (the flexible outer coating of the glove 1, which is for example made of leather, rubber or a thermoplastic material, is not shown for the sake of clarity to illustrate the sheets 2 interposed between these two inner and outer coatings).
• each of the sheets 2 of the glove 1 has a thickness of less than 50 ⁇ m and preferably less than 40 ⁇ m, and has both of the following three properties, measured at 20 ° C:
• each sheet 2 is preferably produced:
• At least one of the three sheets 2 of the zone P of the glove 1 corresponding to the palm - of substantially rectangular geometry - has a width greater than 20 mm and a greater length at 70 mm (see the top sheet 2 of the palm P adjacent to the finger area D2 to D5).
• the 13 sheets 2 which are distributed over the zones D1 to D5 of the fingers they present almost all a substantially rectangular geometry of width at least equal to 10 mm.
• a glove according to the invention could comprise a single continuous metal sheet or a continuous superposition of several metal sheets (ie without free space to the right of these sheets), so as to form a continuous barrier to stitching and punctures.
• the laminated structure 10 of glove illustrated in Figure 2 comprises essentially two inner metal layers 11 and outer 12 superimposed, which are made of a material such as that of the sheets 2 of the glove 1 of Figure 1 (ie preferably a Sandvik Nanoflex® stainless steel grade "1 RK91” or an amorphous alloy "Met Glass 2605 S01") and which have each of their two inner and outer faces covered with a ribbon 11a, 11b, 12a, 12b formed of a sheet glued with a textile fabric halftone.
• This tape 11a, 11b, 12a, 12b is preferably based on polyester or cotton, for example responding to the name SUPERPROTECT® or SUPERTAPE®, and it is used to minimize the noise generated by the folds of these two layers 11 and 12 when handling the glove.
• this glued sheet it would be possible to use a layer of a natural or synthetic polymer acting as a binder or a protective layer.
• this laminated structure 10 comprises, towards the outside of the ribbon 12b covering the outer face of the outer metal layer 12, a flexible outer coating 13 for the glove which is for example leather (non-limiting) and, towards the interior of the ribbon 11a covering the inner face of the inner metal layer 11, an inner absorbent coating 14 of the glove intended to cover the hand of the user and for example based on a textile fabric such as cotton (not limiting) absorbing perspiration.
• a textile fabric such as cotton (not limiting) absorbing perspiration.
• the laminated structure 20 with two inner metallic layers 21 and outer layers 22 according to the invention illustrated as an alternative to FIG. 3 differs essentially from that of FIG. 2, in that each sheet continuous metal 21a, 21b or 22a of one of these layers 21 or 22 is connected to at least one sheet 22a or 21a, 21b of the other layer 22 or 21 by a flexible binder 23 adapted, which advantageously allows that the sheets of each layer 21 can move in virtually all directions relative to those of the layer 22 and vice versa (see arrows A and B in Figure 3).
• the piercing device 30 of FIG. 4 which has been used for these tests comprises, in its lower part, a sample holder block 31 for clamping and centering each test specimen to be tested and, in its upper part, a support block. and supply 32 of each needle 33 which is movably mounted in translation relative to the block 31.
• each hypodermic needle has a cylindrical main body with a diameter of 0.61 mm and, at its pierced and beveled end, an oblong opening of length equal to 2.75 mm and an internal width equal to 0.38 mm.
• this pierced end has two successive bevels respectively forming angles of 9.6 ° and 16 ° with the direction of the cylindrical body of the needle.
• test specimens 1 to 4 two types of metal and continuous thin sheets A and B were used, one made of a Sandvik Nanoflex® cold rolled and aged austenitic stainless steel. grade "1 RK91”, and the other made of an amorphous metal alloy (also known as metallic glass) with the trademark "Met Glass 2605 S01". Table 1 below lists the main mechanical properties and the respective thicknesses of these two sheets.
• specimen No. 1 according to the invention: consisting of a single metal layer formed from the aforementioned sheet A
• specimen No. 2 according to the invention: consisting of a single metal layer formed of the aforementioned sheet B
• specimen No. 3 according to the invention: consisting of two metal layers which are each formed of the aforesaid sheet A and which are directly stacked one on the other
• specimen No. 4 according to the invention: consisting of two metal layers which are each formed of the aforementioned sheet B and which are directly stacked one on the other
• specimen No. 1 consisting of a single metal layer formed from the aforementioned sheet A
• specimen No. 2 according to the invention: consisting of a single metal layer formed of the aforementioned sheet B
• specimen No. 3 consisting of two metal layers which are each formed of the aforesaid sheet A and which are directly stacked one on the other
• specimen No. 4 according to the invention: consisting of two metal layers which are each formed of the aforementioned sheet B and which are directly stacked one on the other
• test specimen No 6 'control' consisting of a tire-skin rubber composition with a thickness of 2 mm
• sample 7 "control” "white” leather plate with a thickness of 1.05 mm
• Sample No. 8 "control” first anti-stitch control glove marketed in the United States under the name “Turtle”
• - test-tube No. 9 "control” third control glove of denomination "Mapa Ultrane plus 557” in green latex (level 3 for the resistance to perforation, according to standard NF EN 388).
• Table 2 illustrates in base 100 (the reference 100 chosen corresponding to the sample No. 8 "control") the results obtained for the other specimens No. 1 to 7 and 9 subjected to piercing tests via the needles mentioned above, in terms of piercing force (in N), it being specified that piercing force values which are greater than 100 show improved pitting resistance in comparison with this reference.
• test pieces according to the invention and in particular the test pieces Nos. 3 to 5, which have in common that they comprise several superimposed metal layers satisfying the three criteria (i) to (iii) above and that are indifferently constituted "Nanoflex” sheets A or “Met Glass” sheets B) have, thanks to these layers, a significantly improved pitting resistance in comparison with that of the "control" specimens, while having a satisfactory flexibility making these laminates in particular satisfactory. can be used in gloves for industrial use.
• the test specimen No. 5 according to the invention based on four metal layers has the highest resistance to sting, since it is the needle itself which was broken during this test of drilling.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Surgery (AREA)
• Medical Informatics (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Ceramic Engineering (AREA)
• Molecular Biology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Mechanical Engineering (AREA)
• Laminated Bodies (AREA)
• Gloves (AREA)

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• 2007
  • 2007-07-26 FR FR0705467A patent/FR2919223B1/fr not_active Expired - Fee Related
• 2008
  • 2008-07-24 WO PCT/FR2008/001103 patent/WO2009044012A2/fr not_active Ceased
  • 2008-07-24 EP EP08836247A patent/EP2183101A2/de not_active Withdrawn

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