Classifications

• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
  • D02G3/16—Yarns or threads made from mineral substances
  • D02G3/18—Yarns or threads made from mineral substances from glass or the like
  • D02G3/182—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure
  • D02G3/185—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure in the core
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
  • D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
  • D02G3/442—Cut or abrasion resistant yarns or threads

Definitions

• Cut resistant wire intended in particular for the production of protective clothing
• the present invention relates to a cut-resistant wire, intended in particular for the production of protective clothing against mechanical attack
• These personal protective equipment are most often in the form of gloves, cuffs, aprons, or any part of clothing, and are generally knitted or more rarely woven.
• the pure polymer yarns, chosen in the previous materials do not allow obtaining class 5 classifications according to the European standard EN 388, for thin knits, ensuring good dexterity as must be the case in protective gloves. intended for cutting.
• These personal protective equipment, widely used in the sheet metal industry must allow beyond good grip by users, good comfort which ensures that the equipment will always be worn by exposed personnel.
• Glass or stainless steel filaments do not withstand bending well and break.
• the released ends despite assemblies of polymeric filaments intended to sheath them by wrapping operations, end up passing through the layers of gimped polymeric filaments, the effect of which is to prick the hands of operators, who generally no longer carry the equipment protection.
• glass filaments are used for their fire-resistant properties (MO classification). These sun visors are placed inside buildings in front of windows and must fulfill, in addition to solar filtration, an aesthetic function.
• the glass filament generally called silionne is coextruded with a polymeric flame-retardant resin in the mass and dyed with the desired color. These threads are then woven and heat-welded at the crossing of the threads to block the thread network.
• the object of the invention is to provide a wire resistant to cutting allowing the production of protective equipment which provides good security for users and which has good flexibility, promoting comfort.
• the wire which it concerns comprising a core obtained by coextrusion of a glass multifilament E, R, C or S or more generally of silionne or basalt and a sheath of polymer of the thermoplastic, thermoset type , natural elastomer, synthetic elastomer, fluorinated or not, is characterized in that the fiberglass part represents at most 60% by mass of the sheath + filament compound, and in that the core is covered by synthetic multifilaments.
• the core is subjected to a double or triple wrapping by synthetic multifilaments.
• the coextrusion part makes the core wire more flexible than if it were made entirely of glass.
• the covering threads are absolutely blocked by the contact of the polymer constituting them on the coextruded polymer.
• the extruded polymer sheath creates a perfect seal for the axial component constituted by the glass filament.
• the polymers used can be polyvinyl chloride or polyurethanes or any other chemically inert polymer.
• level 5 is reached very easily and can be stored even after 10 washes.
• the covering multifilaments are chosen from the following families: High molecular weight polyethylene, greater than 600,000 g / mole, Para-aramid with a module> 50Gpa, high tenacity and standard polyamide, High tenacity polyester and standard, Liquid crystal polymer (LCP), Poly Phenylene Benzo Bisoxazole (PBO), Polyester loaded with ceramic.
• LCP Liquid crystal polymer
• PBO Poly Phenylene Benzo Bisoxazole
• the different covering multifilaments are made of identical materials.
• the different covering multifilaments are made, at least for some, of different materials.
• This wire consists of a "core” A consisting of a glass wire coextruded with a PVC type resin, with a global title of 100 Tex.
• the glass fiber part represents 35 Tex
• This compound "core” is covered by covering with a polyethylene multifilament of 220 dtex with high molecular weight B (greater than 600,000 g / mole), the crystallinity of which is greater than 80% by volume.
• the covering is with contiguous turns, with a pitch of the propeller of 1.5 mm, that is to say a twist of 666 rpm in the S or Z direction, the title of the filament is 220 dtex with 0 twist turn.
• a second covering is carried out with a multifilament of the same nature C with a pitch of the propeller of 2 mm, that is to say a twist of 500 rpm in the opposite direction to the first layer of filament.
• the complete thread therefore reaches a global title of
• This compound "core” is covered by covering with a multifarament B 'of Para-aramid of 440 dtex and the Young's modulus between 60 and 1 20 GPa.
• the overlap is with contiguous turns with a pitch of 3 mm for a twist of 333 rpm in the S or Z direction.
• a second covering is carried out with a multifilament C of Polyamide 6.6 high tenacity of 440 dtex having a degree of crystallinity> 45% by volume.
• the gloves reached class 5 with a cut index> 60. After 10 washing tests, the gloves showed no breakage of glass filaments. 3rd hybrid yarn (fig.3)
• This wire consists of a "core” A "consisting of a glass wire coextruded with a PU resin with a global title of 238 Tex.
• the glass fiber part represents 64 Tex and the PU part 1 74 Tex.
• This" "compound core is covered by covering with a multifilament B" of Para-aramid of 440 dtex and the Young's modulus between 60 and 1 20 GPa. The overlap is with contiguous turns with a pitch of 3 mm for a twist of 333 rpm in the S or Z direction.
• a second covering C " is produced with a polyethylene multifilament of high molecular weight (> 600,000 g / mole), of
• a third covering is finally carried out with a polyethylene multifilament of high molecular weight (> 600,000 g / mole) of 440 dtex, having undergone an "Air jet” type texturing to bring cohesion to all of the multifilaments.

Applications Claiming Priority (3)

Publications (2)

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• 2001
  • 2001-08-24 FR FR0111107A patent/FR2828894B1/fr not_active Expired - Fee Related
• 2002
  • 2002-08-21 EP EP02796302A patent/EP1419292B1/de not_active Expired - Lifetime
  • 2002-08-21 DE DE60209551T patent/DE60209551T2/de not_active Expired - Lifetime
  • 2002-08-21 WO PCT/FR2002/002918 patent/WO2003018890A1/fr active IP Right Grant
  • 2002-08-21 US US10/483,057 patent/US7065949B2/en not_active Expired - Lifetime
  • 2002-08-21 JP JP2003523728A patent/JP4257204B2/ja not_active Expired - Lifetime
  • 2002-08-21 ES ES02796302T patent/ES2259733T3/es not_active Expired - Lifetime
  • 2002-08-21 AT AT02796302T patent/ATE318948T1/de not_active IP Right Cessation

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