FR2728144A1 - HIGH PROTECTION GLOVE - Google Patents

Abstract

The present invention relates to a high protection glove intended to protect the hand mainly against the risks of cuts, but also against the risks of burns, abrasion or perforation, as well as to a method of manufacturing such. glove. The glove (10) is characterized in that at least the face of the glove intended to cover the palm of the hand - or palmar face (13) - comprises a material of high cut resistance while all or part of the face of the glove intended to cover the back of the hand - or dorsal surface - comprises an elastic material. The material of high cut resistance is advantageously a textile of organic fibers such as, for example, a knitted fabric of para-aramid or inorganic fibers or else a mixture of such fibers, while the elastic material is advantageously a textile of organic fibers. such as for example a knitted fabric of cotton fibers.

Description

HID PROTECTION GLOVE

  The present invention relates to a high-protection glove intended to protect the hand mainly against the risk of cuts, but also against the risk of burns, abrasion or perforation, as well as a method of manufacturing a

such glove.

  For the protection of the hands when handling products, tools or cutting equipment, Art Anterior offers gloves made of knitted fabrics having a high resistance to

the cut.

  Among the organic fibers used, mention may be made of polyester fibers, polyethylene fibers

  "high modulus and high tenacity (DYNEEMA fibers.

  sold by the Company SDM), polyamide fibers, aramid fibers and especially para-aramids such as KEVLAR fibers which constitute a material particularly suitable for producing such gloves because of their high resistance to cutting. KEVLAR fiber knitted knits are also used for the manufacture of mitts and gloves with high protection against heat or fire because these fibers also have good thermal performance. In order to make them impervious, especially to oils and chemical agents, to give them additional resistance to perforations and to prolong their longevity, the outer surface of these gloves is generally coated with an elastomer or a plastics material. This coating is carried out by a conventional quenching technique which consists of mounting the glove to be coated on a mold in the shape of a hand, then to soaking the assembly in several successive baths containing said elastomer or said plastic material, the last quenching operation being followed, in the case of a

  elastomer, a vulcanization operation.

  However, the knitted fabrics made from the aforementioned textile fibers are little or not elastic so that it is not possible to give the gloves a shape that is faithful to the outline of the hand, otherwise it will not be possible, on the one hand, to put them on the quenching molds and slip in on the other hand. It follows that these gloves have a coarse anatomical shape which impedes the movements of the fingers and considerably alters the precision of the gestures and the dexterity of the user, which, on the one hand, limits their use to rough manipulations and, d On the other hand, makes them

uncomfortable use.

  The lack of elasticity of the knitted fabric constituting these gloves accentuates these disadvantages to the extent that it is unfit to follow the

  movements of the hand and fingers.

  The discomfort of these gloves often prompts their user to remove them, including to perform dangerous object handling, despite the safety rules, so that, paradoxically, these

  gloves do not fulfill their safety function.

  To overcome these drawbacks, it has also been proposed for the protection of hands against the risk of cuts, to make gloves in an elastic knit and to report by sewing, on the outer face of these gloves, one or more pieces of a textile inelastic fiber presenting a high

cut resistance.

  However, in order for the gloves thus produced to retain the elastic properties of the textile which constitutes them and in particular to be able to be mounted without difficulty on quenching shapes, only small areas can be covered with inextensible textile, which has the effect of limiting the surface area. hands really protected when handling sharp or sharp objects. Thus, the anterior face of the fingers is generally not protected while it is a part of the hand particularly exposed to the risk of cut. In addition, the extra thicknesses constituted by the high-protection textile inserts prove to be troublesome,

even hurtful to use.

  To these problems, it is furthermore added that the methods proposed in the prior art for coating high protection gloves with a protective coating have the effect of stiffening the knits of fibers which are highly resistant to cutting and thus contribute to at

  make the use of gloves even more uncomfortable.

  The purpose of the invention is, in general, to provide a glove of high protection mainly against the risk of cuts that do not have the disadvantages of known gloves

mentioned above.

  The Applicant has indeed set the goal of providing a glove to very effectively protect the areas of the hand exposed to the risk of accidents including the risk of cuts when handling sharp objects or sharp without the quality of this protection impedes the functional properties of the hand so that the user can perform with this glove all the gestures, even the finest and the most delicate, in the best

  conditions of comfort and safety.

  The Applicant has also set itself the goal of providing such a glove whose moderate cost allows its wide dissemination. These objects are achieved according to the present invention by a high-protection glove characterized in that at least the face of the glove intended to cover the palm of the hand - or palmar face - comprises a material of high resistance to cutting while all or part of the face of the glove intended to cover the back of the hand - or dorsal surface - comprises an elastic material. According to an advantageous arrangement of the invention, the material of high resistance to cutting is a textile of organic or inorganic fibers resistant to cutting or a mixture of such fibers. Preferably, the high strength material

  at the cut is a knit of para-aramid fibers.

  According to another advantageous arrangement of the invention, the elastic material is a textile of

  natural or synthetic organic fibers.

  Preferably, the elastic material is a

knitted cotton fibers.

  In one embodiment of the invention, the glove comprises a wrist or a cuff, at least the face intended to cover the anterior face of the wrist or forearm comprises the material of high resistance to cut while the face intended to cover the posterior surface of the wrist or forearm

comprises the elastic material.

  In another embodiment of the invention, the glove comprises a wrist or a cuff comprising a textile of natural or synthetic fibers such as an elastic knit of cotton fibers or a rigid fabric of para-aramid fibers, which is rendered integral, by sewing or any other means, the proximal ends of the palmar and dorsal faces of said glove. Advantageously, the glove further comprises one or more pieces of material of high resistance to cutting reported by sewing or any

  other means on its palmar face and / or its dorsal surface.

  In a preferred embodiment of the invention, the glove comprises on all or part of its outer surface a coating made of an elastomer or a

plastic material.

  In a particularly advantageous manner,

  the elastomer is a carboxylated nitrile rubber.

  The invention also relates to a method of manufacturing a high-protection glove which is characterized in that it comprises assembling, by sewing or any other means, the edges of a first piece intended to cover at least the palm of the hand and previously made or cut in a material of high resistance to cutting and a second piece intended to cover all or part of the back of the hand and previously made or cut in an elastic material. According to an advantageous arrangement of the method, the latter comprises the assembly, by sewing or any other means, on the free edge of said parts of a wrist or a cuff previously made or cut in a textile of natural or synthetic organic fibers such as that an elastic fiber knit of

  cotton or a rigid canvas of para-aramid fibers.

  In a preferred embodiment of the process according to the invention, for coating the outer surface of the glove with an elastomer, it comprises: - a quenching of the glove in a solution capable of allowing the coagulation of the glove. elastomer followed by drying, - one or more successive quenching of the glove in the elastomer, each quenching being followed by drying until complete coagulation of said elastomer is obtained, - quenching of the glove in the elastomer; water or any other solvent capable of allowing the elimination of the coagulating solution, drying of the glove for example in an oven and vulcanization of the elastomer. Other features and benefits of

  the invention will appear from the description which follows,

  by way of example and with reference to the accompanying drawings in which: - Figure 1 is a schematic view of the palmar surface of a first embodiment of a glove according to the invention in use condition on a right hand; FIG. 2 is a schematic view of the dorsal surface of the glove of FIG. 1, also in condition of use on a right hand; - Figure 3 is a schematic view of the dorsal surface of a second embodiment of a glove according to the invention, also in condition of use on a right hand; FIG. 4 is a schematic view of the dorsal surface of a third embodiment of a glove according to the invention, also in condition

of use on a right hand.

  Referring first to Figures 1 and 2 which show schematically a glove 10 according to the invention, in condition of use on a right hand, and which comprises, as shown in Figure 1, a first piece 11 of a material of high resistance to cutting which covers the palm of the hand and, as shown in Figure 2, a second piece 12 of elastic material which covers the back of the hand. In the foregoing and the following, the term "palmar face" of the glove 10 - referenced 13 in FIG. 1 - denotes the face of this glove which covers the palm of the hand whereas the term "dorsal face" of the glove 10 is referenced. 14 in Figure 2 - the face of it which

covers the back of the hand.

  The parts 11 and 12 are secured to one another, for example by seams 15, at the radial and ulnar edges of the hand, at the lateral faces of the fingers, the end of the latter

  as well as at the level of the interdigital commissures.

  The material of high resistance to cutting

  is advantageously a textile (fabric, knitted or not

  woven) of organic or inorganic fibers having a high cut resistance or a mixture of

such fibers.

  Among the cut resistant organic fibers suitable for the implementation of the invention, mention may be made of the fibers conventionally used in the prior art for the manufacture of gloves of high protection such as, for example, polyester fibers, "high modulus and high tenacity" polyethylene fibers, polyamide fibers, fibers

  aramids and, among these, para-

  aramids. The para-aramid fibers of the KEVLAR® type (DU PONT DE NEMOURS) represent a particularly suitable material for making a glove.

according to the invention.

  To obtain a truly satisfactory protection against the risk of cuts, it is

  it is preferable that, irrespective of the textile used,

  it is inextensible or very slightly extensible, either by the nature of the fibers which constitute it, or by

their method of assembly.

  In particular, in the case of the use of a KEVLAR fiber knit, it must be chosen with tight mesh to prevent it from deforming during assembly of the glove on the quenching shape, which would cause the widening of some stitches and the

  creation of zones of less resistance to the cut.

  Excellent results have been obtained by using a knit of para-aramid fibers of the KEVLAR type having a basis weight of 300 g / m 2 as that marketed by SEM under the

Reference 844.

  Among the inorganic fibers, it is possible to use metal, carbon or

glass.

  A cut-resistant material useful for the implementation of the invention may also consist of a textile of organic fibers reinforced with

  metal wires such as for example stainless steel.

  The elastic material constituting the part 12 is advantageously a textile of natural or synthetic fibers whose elasticity must be sufficient to compensate for the lack of extensibility of the resistant material

at the cut-off forming part 11.

  A cotton fiber knit represents an elastic material particularly suitable for the implementation of the invention in that it has the advantage of being comfortable, hypoallergenic, low in flammability and also low cost. Excellent results have been obtained with a single knit fabric of mass cotton fibers

surface area equal to 250g / m2.

  However, it is possible to use an elastic textile other than cotton fibers to form part 12. All textiles used in the clothing industry (polyamide, polyester, acrylic fiber textiles, etc.) can appropriate, provided that they have sufficient elasticity to

  compensate for the lack of elasticity of the part 11.

  The glove 10 comprises a wrist 16, which is advantageously, as shown in FIGS. 1 and 2, formed of a tubular piece 17 made of an elastic textile which is attached to the proximal ends of the pieces 11 and 12 by one or more seams 18 or some

analogous means.

  Among the elastic fabrics that may be suitable for forming the wrist 16, mention may be made of single or double-layer knits of cotton fibers because of the advantages mentioned above that these fibers have, but also the knits of polyamide, polyester, acrylic and other fibers classically

  used in the clothing industry.

  The presence of the wrist 16 advantageously facilitates donning and maintaining the glove 10 on the hand while providing protection of the wrist and

  the lower part of the forearm.

  In the embodiment of the glove shown in Figures 1 and 2, the glove 10 comprises a not shown coating which covers the entire palmar surface 13 of the glove 10 and a part of the anterior face of the wrist 16, the end fingers up to, for example, the line 19 shown in FIG. 1, which covers the major part of the dorsal surface 14 of the glove 10, from the fingertips to, for example, the line 20

shown in Figure 2.

  This coating may consist of one or more layers of a natural elastomer (polyisoprene) or synthetic (nitrile rubbers, polychloroprene, ...) or a plastic such as for example polyvinyl chloride (PVC), is intended as appropriate, to waterproof the glove vis-à-vis some agents such as oils or to prevent premature wear or deterioration during handling objects with asperities. It also makes it possible to prevent the wetting of the cut resistant fibers in contact with water or aqueous products which, in addition to being a source of discomfort, causes a deterioration of the mechanical properties of these fibers. It can also give the glove a protective function against the risk of perforation and, depending on its nature and surface condition, to prevent wet objects or small size slip between the fingers of the user. Of the synthetic elastomers, carboxylated nitrile rubbers (carboxylated copolymers of butadiene and acrylonitrile) have proved to be particularly advantageous coatings due to the fact that they allow, unexpectedly, to considerably increase the level of resistance to cut of the glove. 3 schematically illustrates a second embodiment of a glove according to the invention, in use condition on a right hand and seen under its dorsal face 14. In this embodiment, the part 11 consists of a material of high resistance to cut and forming the palmar face 13 of the glove 10 extends on the dorsal surface of the thumb so as to completely cover the latter, from its end to the seam 18 solidarizing the part 17 which forms the wrist 16 to

  proximal ends of parts 11 and 12.

  The parts 11 and 12 are therefore integral with each other at the level of the ulnar edge of the hand, at the level of the lateral faces and the ends of the fingers, with the exception of those of the thumb, at the level of the interdigital commissures. , as well as at the line 21 shown in its visible part in Figure 3 and which extends from the commissure located between the thumb and the index finger

up to said seam 18.

  In addition, the glove 10 comprises a reinforcing piece 22 made of a cut resistant material identical or different from that which constitutes the piece 11 and which is attached by one or more seams 23 or similar means to the portions of the pieces 11 and 12 overlapping the palm and back side of the hand between the thumb and forefinger to enhance

  protective glove 10 at these areas.

  In this embodiment also, the glove 10 comprises a not shown coating which covers the entire palmar surface of this glove and a part of the anterior face of the wrist 16 and which covers most of its dorsal face 14, the fingertips

  up to line 20 shown in FIG.

  Referring now to Figure 4 which schematically shows a third embodiment

  of a glove 10 according to the invention seen under its dorsal face 14 and in use condition on a right hand, in which the part 11 which constitutes the palmar face 13 of this glove, extends on the dorsal surface of the fingers so as to cover the first phalanx of each finger.

  This embodiment optimally protects the ends of the fingers that are

  particularly exposed to the risk of cutting during handling of sharp objects.

  In addition, as shown in Figure 4, the parts 11 and 12 extend in the opposite direction to that of the ends of the fingers so as to form a sleeve 24, the anterior face 25 is formed by the high-strength material cut-off while the rear face 26 is constituted by the elastic material. The sleeve 24 makes it possible to effectively protect the anterior surface, and in particular the veins, the wrist and the forearm against the risks.

cut.

  Whatever the embodiment, the gloves according to the invention have a shape faithful to the anatomy of the hand, are adapted to marry thanks to the presence of the piece 12 the contour of the hand and, especially the contour of the fingers, while they allow thanks to the presence of the part 11 and, incidentally of one or more reinforcing pieces 22, to very effectively protect the areas of the hand exposed to the risk of cuts when handling objects sharp or sharp. It is thus possible to make using these gloves all kinds of manipulations, including the most delicate, in the best conditions of comfort

and security.

  In addition, these gloves can easily be put on the quenching forms used for coating their outer surface, when such

coating is required.

  The manufacture of a glove 10 according to the invention comprises the assembly on their edges of the parts 11 and 12, previously cut to the appropriate dimensions or made to measure in the appropriate materials, said assembly being preferably made on a template reproducing a hand in a size conventionally used in the manufacture of gloves (7, 71/2, 8, 81/2, ...) so that the glove thus formed perfectly fits the contour of the hand to which it

is destined.

  For the embodiments shown in Figures 1 to 3, the manufacture of the glove further comprises the assembly of the part 17 to form the wrist 16 of the glove with the proximal ends of the parts 11 and 12 and, for the form of 3, it further comprises assembling the remaining free edges of the workpiece 11 so as to close the glove at the inner lateral edge of the thumb followed by the attachment of the workpiece.

reinforcement 22.

  Preferably, the assembly of these different parts together is achieved by seams.

  However, other means such as welds or

collages can be used.

  In the case where it is desired to coat the glove with an elastomer or a plastic material as in the embodiments corresponding to FIGS. 1 to 3, it is advisable to subject the glove obtained at the end of the assembly operations. parts that constitute it to

a coating operation.

  This can be carried out by the quenching techniques conventionally used in the prior art for coating high-protection gloves and which comprise, after mounting the glove on a quenching form, one or more successive quenching of the glove in a bathing an elastomer or a plastic material, each quenching being followed by drying, and then optionally vulcanizing or gelling the glove.

  drying oven before its extraction from the quenching form.

  However, when the coating chosen is an elastomer, the invention provides, after the glove has been mounted on the quenching form, to dip it successively: in a solution suitable for allowing the elastomer to coagulate, this quenching being followed by drying, in one or more baths of the elastomer, each quench also being followed by drying until complete coagulation of said elastomer is obtained, and - in water or any other solvent capable of allowing the elimination of the coagulating solution, then, after drying the glove, for example in an oven, to undergo vulcanization before extraction of the form

quenching.

  The Applicant has in fact discovered that this method makes it possible to deposit on the outer surface of the glove one or more layers of elastomer without completely coating the textile fibers constituting the material of high resistance to cutting so that the flexibility of this material, and hence, that of the glove are preserved. Thus, for the same elastomer, a coating made in accordance with the invention leads to obtaining a glove significantly softer than a glove coated by the techniques of the prior art. A particularly suitable coagulant solution is water with about 10% added

of acetic acid.

  The mounting of a glove according to the invention on the quenching forms and its extraction of these forms after the coating operations have taken place.

  revealed particularly well-off.

COMPARATIVE TESTS:

  The Applicant has carried out cut resistance tests according to the slicing test of the European standard EN 388 on gloves (A, B, C and D) according to the invention and having the following characteristics: Glove A : - material of high resistance to the cut: KEVLAR fiber knit of mass density equal to 300g / m2; no coating; Glove B: - material with high cut resistance identical to that of the glove A - coating with a carboxylated nitrile rubber according to a coating process not using a coagulating solution; Glove C: - material with high cut resistance identical to that of gloves A and B; coating with a carboxylated nitrile rubber according to the coating method according to the invention; Glove D: - material of high resistance to cutting identical to that of gloves A, B and C; coating by a natural latex according to the

  coating process according to the invention.

  The table below presents the cut-off indices obtained for each of these gloves as well as the

  level of performance corresponding to these indices.

  GAWT CLIP LEVEL INDICES PelFOtULI

A 10 to 11 4

B 20 to 27 5

C 22 to 25

  The results above show that, unexpectedly, a carboxylated nitrile rubber coating makes it possible to obtain a cut resistance almost twice as high as that obtained with a natural latex, the latter being of the same level. than

that of an uncoated glove.

  Of course, the invention is in no way

  limited to the embodiments described and illustrated below.

  before which are given only as an example. Thus, it is possible to replace, in the embodiments shown in Figures 1 to 3, the tubular part 17 forming the wrist 16 and made of an elastic fabric by a clean part to form a wrist or a cuff and previously made in a rigid textile such as a KEVLARO fiber cloth for

  strengthen the protection of the wrist and forearm.

Claims (11)

  Glove (10) of high protection, characterized in that at least the face of the glove intended to cover the palm of the hand - or palmar face (13) comprises a material of high resistance to cutting while all or part the face of the glove intended to cover the back of the hand - or dorsal face (14) - comprises an elastic material.   Glove according to Claim 1, characterized   in that the material of high resistance to cutting is a textile of organic or inorganic fibers resistant to cutting or a mixture of such fibers. Glove according to claim 2, characterized in that the material of high resistance to cutting   is a knit of para-aramid fibers. 4. Glove according to any one of   Previous claims, characterized in that the   elastic material is an organic fiber textile natural or synthetic.   Glove according to Claim 4, characterized in that the elastic material is a fiber knit of cotton. 6. Glove according to any one of   Previous claims, characterized in that   has a wrist or cuff (24) at least the face for covering the anterior surface of the wrist or forearm (25) comprises the high-cut material while the face intended to cover the face posterior of the wrist or forearm   (26) comprises the elastic material. 7. Glove according to any of   Claims 1 to 5, characterized in that it comprises a   wrist or cuff (16) comprising a textile of natural or synthetic fibers such as an elastic knit of cotton fibers or a rigid web of para-aramid fibers, which is made integral, by sewing or any other means, with the proximal ends   palmar (13) and dorsal (14) faces of the glove. 8. Glove according to any one of   Previous claims, characterized in that   further comprises one or more pieces (22) of material of high resistance to cutting, reported by sewing or any other means, on its palmar face (13) and / or its dorsal face (14). 9. Glove according to any one of   Previous claims, characterized in that   includes on all or part of its external surface a   coating made of an elastomer or a plastic material.   Glove according to Claim 9, characterized in that the elastomer is a carboxylated nitrile rubber. 11il. Method of manufacturing a high glove   protection according to any one of claims 1 to   , characterized in that it comprises assembling, by sewing or any other means, the edges of a first piece (11) intended to cover at least the palm of the hand and previously made or cut from a high-strength material at the cut and a second piece (12) intended to cover all or part of the back of the hand and previously made or cut in an elastic material.   12. Manufacturing method according to claim 11, characterized in that it comprises the assembly, by sewing or any other means, on the free edge of the glove of a wrist or a cuff (16) previously made or cut in a textile of natural or synthetic organic fibers such as an elastic knit of cotton fibers or a rigid fabric of para-aramid fibers.   13. Manufacturing process according to claim 11 or claim 12, characterized in that, for coating the outer surface of the glove with an elastomer, it comprises: - a quenching of the glove in a solution suitable for allowing the coagulation of the elastomer followed by drying, one or more successive quenching of the glove in the elastomer, each quenching being followed by drying until complete coagulation of said elastomer is obtained; - quenching of the glove in the elastomer; water or any other solvent capable of allowing the elimination of the coagulating solution, drying of the glove for example in an oven and vulcanization of the elastomer.