WO2013049009A1 - Gants à bouts de doigt résistant à l'écrasement - Google Patents

Gants à bouts de doigt résistant à l'écrasement Download PDF

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Publication number
WO2013049009A1
WO2013049009A1 PCT/US2012/057030 US2012057030W WO2013049009A1 WO 2013049009 A1 WO2013049009 A1 WO 2013049009A1 US 2012057030 W US2012057030 W US 2012057030W WO 2013049009 A1 WO2013049009 A1 WO 2013049009A1
Authority
WO
WIPO (PCT)
Prior art keywords
liner
glove
fingertips
crush
resistant
Prior art date
Application number
PCT/US2012/057030
Other languages
English (en)
Inventor
Jeffrey Charles MORELAND
James H. Moreland
Gopinath Radhakrishnan
Ricky C. CARD
Original Assignee
Ansell Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ansell Limited filed Critical Ansell Limited
Publication of WO2013049009A1 publication Critical patent/WO2013049009A1/fr

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Classifications

    • 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
    • A41D19/01517—Protective gloves resistant to mechanical aggressions, e.g. cutting. piercing with protection against crushing, e.g. of the finger tips

Definitions

  • Embodiments of the present invention relate generally to protective articles such as gloves and other wearable items providing an inner fabric support and an outer polymeric coating and, particularly, to gloves having crush-resistant fingertips.
  • Gloves, and particularly gloves used in work settings require properties providing safety while ensuring comfort during prolonged wear throughout the course of work activities. Fingers, and particularly fingertips, encounter the most danger and are often injured during work activities, such as from impact, crush, severance, and pinch hazards. However, workers often complain that gloves are too bulky and inflexible for the work that they perform. As a consequence, the gloves are often not worn, leading to even greater injuries. Accordingly, gloves must be flexible to be useful while performing work activities as well as inexpensive and easy to manufacture while protecting hands against additional concerns, such as protection from chemicals, oils, gases, and the like. Moreover, it is often desirable to protect workpieces (electronic equipment, touchscreens, and the like) from contact, natural skin oils, and perspiration by the wearer of the glove. Therefore, attempts have been made to create gloves addressing these needs.
  • workpieces electronic equipment, touchscreens, and the like
  • One such glove discloses crush-resistant fingertips made of plastic or metal.
  • the glove comprises fingertips shaped as tubular members.
  • the tubular members are inserted into or onto a liner.
  • the liner may then be received within an outer glove.
  • the glove requires many manufacturing steps, does not provide an integrally formed glove, and does not address many safety and other concerns.
  • a thin flexible glove comprising a liner, crush-resistant fingertips, and a shell, and methods for manufacturing, substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims, are disclosed.
  • FIG. 1 depicts a glove having rigid, crush-resistant fingertips inserted into the finger stalls of a liner, according to embodiments of the invention
  • FIG. 2 depicts a glove having rigid, crush-resistant fingertips attached to the outside of the finger stalls of a liner, according to embodiments of the invention
  • FIG. 3 depicts a glove having rigid, crush-resistant fingertips inserted into or attached onto a liner glove, and further including an outer coating over the liner, according to embodiments of the invention
  • FIG. 4 depicts several rigid, crush-resistant fingertips, according to embodiments of the invention.
  • FIG. 5 illustrates a typical manufacturing process, according to embodiments of the invention.
  • FIG. 1 depicts a glove having rigid, crush-resistant fingertips inserted into the finger stalls of a liner, according to embodiments of the invention.
  • the fabric support or liner 104 for the crush-resistant gloves 100 can be, for example, a knit material, a cut-and sewn woven or non-woven fabric, cotton flock, fleece, or other suitable material.
  • Crush-resistant fingertips 102 are disposed inside the finger stalls of liner 104 of glove 100 and are delivered there through cuff 110 as shown by the directional arrow.
  • FIG. 2 depicts a glove having rigid, crush-resistant fingertips attached to the outside of the finger stalls of a liner, according to embodiments of the invention.
  • the crush- resistant fingertips 102 are disposed on the outside of the finger stalls of liner 104 of glove 200.
  • a shell comprising an elastomeric or polymeric coating can be applied by dip coating the support, as is discussed below. Alternatively, the shell may be sprayed onto the liner and fingertips, as is known in the art.
  • FIG. 3 depicts a glove having rigid, crush-resistant fingertips inserted into or attached onto a liner glove, and further including an outer coating over the liner, according to embodiments of the invention.
  • the liner 104 of glove 300 is coated with an elastomeric or polymeric layer 106.
  • the crush-resistant fingertips 102 may be adhered to the inside of the finger stalls of liner 104 or, alternatively, the fingertips 102 may be adhered to the outside of liner 104, and the resulting intermediate glove coated with an elastomeric or polymeric coating 106.
  • a glove with an elastomeric or polymeric coating may comprise a palm dip that covers at least the fingertips, a three-quarters dip as shown in FIG. 3, or a full dip, which result in different level of protection. When applying the coating substantially to all of a glove, all or part of cuff area 108 may nonetheless be uncoated.
  • the finger and palm areas may be coated, while the back of the hand (exclusive of the fingertips) may be uncoated.
  • FIG. 4 depicts several rigid, crush-resistant fingertips, according to embodiments of the invention.
  • the crush-resistant fingertips may be of many different sizes and shapes.
  • the fingertip can comprise an open-end for enhanced tactile sensation.
  • Open-ended fingertips which allow the palm-side of the fingers to extend through the crush resistant fingertips, also allow the gloves, knitted from conductive yarns, to be used with capacitive touchscreen technologies, such as those disclosed in commonly assigned US Patent No. 7,434,422, which is incorporated herein by reference in its entirety.
  • FIG. 4 shows crush-resistant fingertip 402 having an embodiment of an open-ended fingertip, with the finger of a user entering fingertip 402 from direction A.
  • Fingertips may alternately be cylindrical or conical in shape, as in fingertip 404 with the finger of a user entering fingertip 402 from direction A. Alternately, the fingertips may comprise a slightly-bent orientation, as shown in fingertip 406, such as an index finger might be when engaging the thumb, which can alleviate stresses and fatigue during use for some activities.
  • Fingertip 408 comprises a series of rings 410 having varying diameters, the smallest diameters closest to the end of the fingertip and gradually increasing in size, like the finger itself, and joined together at one or a plurality of points 412 to stabilize the structure.
  • the inside and outside surfaces of the crush-resistant fingertips can comprise surface treatments, surface finishes, roughened surfaces, and the like to promote adhesion of the fingertips to the liner and shell.
  • the inside surface may be formed having one of several different electric discharge machine (EDM) finishes known to those of ordinary skill in the art.
  • EDM electric discharge machine
  • the fingertip is to be placed within a liner for attachment by gluing, the outside surface of the fingertip may have one of several different EDM finishes.
  • the material the crush-resistant fingertips components are made of can be selected to balance service properties with manufacturability concerns, such as choosing a plastic that easily bonds with both a specific adhesive and the adhesive to a specific liner yarn.
  • the crush-resistant fingertips may comprise metals, plastics, and/or reinforced composite materials such as carbon-reinforced fiber composites and the like.
  • the plastics and/or composite materials may be doped with metallic materials to add conductivity properties. Carbon-reinforced materials are also used where conductive applications are contemplated.
  • any of the crush- resistant fingertips may comprise embodiments addressing other service concerns, such as puncture and chemical resistance.
  • the support/liner 104 can be made from a yarn having one of various deniers and using 7, 10, 13, 15, or 18 knit gauges, and can be comprised of such materials as KEVLAR®, p-aramids, NOMEX®, m-aramids, SPECTRA®, DYNEEMA®, TSUNOOGA®, SPANDEX®, nylons, polyesters, rayon, cotton, metal wires, fiberglass, and the like, and blends of the foregoing.
  • Various yarns may be specified for flame- and/or heat- resistance as well as for cut-resistance. In some embodiments, the yarns may be treated with chemicals to impart properties known to those having ordinary skill in the art.
  • knitted liners may have various yarns plaited into the knit to impart a balance of properties, for instance, comfort, moisture control and absorbance, scratch resistance, cushioning, strength, and the like.
  • the support is a knitted liner
  • the knitted liners may comprise separately knitted sections, and knitted variable stitch dimensions, such as those disclosed in commonly assigned U.S. Patent No. 6,962,064 and U.S. Patent Appl. Publ. 2009/0211305, which are incorporated herein by reference in their entireties.
  • FIG. 5 illustrates a typical manufacturing process, according to embodiments of the invention.
  • Method 500 for manufacturing gloves is disclosed.
  • the liner 104 is placed on a former at step 502.
  • the inside surface of crush-resistant fingertips may be attached to the outside surface of the liner, either before or after the liner is placed on the former.
  • the liner having the crush-resistant fingertips may then be optionally coated with an elastomeric coating at step 506 and the elastomeric coating cured at step 508.
  • Techniques for fabricating such a dipped glove are well known and disclosed, for example, in commonly assigned US patent number 7,803,438, incorporated herein by reference in its entirety.
  • the fingertips may be attached to the liner using glues, hot melts, or sprayed adhesives, or other suitable attachment means.
  • the fingertips are held in place on the inside or outside surface of the liner with friction.
  • a series of rings having varying diameters may impart friction on the liner and/or on the fingers of the wearer to hold the fingertips in place.
  • This alternative has the added feature of allowing greater circulation of air around the fingers, which can promote comfort and breathability.
  • the rings are oval-shaped and/or sized so that the crux of a wearer's finger at the knuckle receives a ring 410.
  • the fingertips may be held in place by forcing oversized fingertips into the finger stalls of the liner and stretching the yarn of the liner, creating an interference fit.
  • the coating may be disposed on the liner via a molding process, such as an injection-molding process, and may coat the palm area or be extended to a 3 ⁇ 4 coating (palm, fingers, knuckles) or full coat to the wrist.
  • a molding process such as transfer, compression, or injection molding.
  • the injection-molded components may have engineered profiles, textures, finishes, or contours to impart properties promoting ease of use during service, grip-ability, and the like.
  • the crush-resistant fingertips may be injection-molded directly onto a glove already comprising an elastomeric-coated liner. This glove may also then be coated with an additional elastomeric coating. It is further to be noted that any of the various fingertip designs can be incorporated into any embodiment of any glove liner and shell/coating disclosed herein.
  • the support/liner can be mounted onto a former and optionally dipped into a coagulant composition; and dipped into an elastomeric or polymeric emulsion; forming the coating from the emulsion, such as a coating that penetrates less than the entire thickness of the support; and curing the coating.
  • the coating can be applied to all or most of the support, or a portion thereof.
  • the former can be turned over to distribute the elastomeric or polymeric material evenly.
  • the dipping depth into the emulsion composition can be chosen to ensure that the resulting coating penetrates the glove body for good adherence but with minimal to no strikethrough to the hand-contacting side.
  • the process variables, which control the penetration of the polymeric or elastomeric emulsion can include, control of viscosity of the emulsion and control of dip depth in the elastomeric or polymeric emulsion tank.
  • hydraulic pressure in the tank of aqueous polymeric emulsion can contribute to the depth of penetration.
  • Typical elastomeric or polymeric materials that may be used include natural rubbers, synthetic rubbers, guayule, natural and synthetic polyisoprene, butadiene, styrene-butadienes, nitriles, poly (vinyl chloride), polyurethane, polychloroprene, blends, mixtures thereof, and the like.
  • the coating may optionally be foamed, embodiments of the invention comprising a foamed coating are produced using a suitable combination of a surfactant, control of air content in the foamed coating, control of the viscosity of the elastomeric lattices and suitable former temperatures for liner supported dipping processes.
  • the elastomeric or polymeric emulsion composition may comprise ingredients such as surfactants, defoamers, pigments, plasticizers, thixotropic agents, thickeners, processing aids, fillers, and the like, as known to those of ordinary skill in the art.
  • the concentration of the coagulant can be varied to regulate the amount the polymer penetrates the support. Similarly, the amount and orientation of pre-cure drying can be adjusted to limit excessive penetration.
  • the support/liner can be partially dried after dipping into a coagulant solution.
  • Coagulant solutions that can be used with the invention include calcium nitrate, calcium citrate, acetic acid, tricarboxylic acid, aluminum sulfate, zinc acetate, sodium chloride, alcohol, dilute HC1, formic acid, other divalent and trivalent metal ion salts, mixtures thereof, and the like.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Gloves (AREA)

Abstract

L'invention concerne un gant fin souple comprenant une doublure de support en tissu, des bouts de doigt résistant à l'écrasement et une coque élastomère ou polymère disposée sur ces derniers, et ses procédés de fabrication.
PCT/US2012/057030 2011-09-26 2012-09-25 Gants à bouts de doigt résistant à l'écrasement WO2013049009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161539251P 2011-09-26 2011-09-26
US61/539,251 2011-09-26

Publications (1)

Publication Number Publication Date
WO2013049009A1 true WO2013049009A1 (fr) 2013-04-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/057030 WO2013049009A1 (fr) 2011-09-26 2012-09-25 Gants à bouts de doigt résistant à l'écrasement

Country Status (2)

Country Link
US (1) US20130074242A1 (fr)
WO (1) WO2013049009A1 (fr)

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CN103415223B (zh) * 2011-03-11 2016-08-17 安塞尔有限公司 具有注塑成型组件的手套
ITTV20120028A1 (it) * 2012-02-24 2013-08-25 Alpinestars Res Srl Struttura di guanto provvista di elementi di protezione e metodo di realizzazione della stessa.
CN104970462A (zh) * 2015-06-19 2015-10-14 夏瑾梅 海绵垫半指板式防护手套
JP7023111B2 (ja) * 2015-07-16 2022-02-21 日本ゼオン株式会社 ディップ成形品の製造方法
US20170156421A1 (en) * 2015-12-07 2017-06-08 East Leading Chemical Co., Ltd. Water repellent glove
USD824111S1 (en) 2016-06-21 2018-07-24 Ringers Technologies Llc Industrial impact safety glove
WO2018194669A1 (fr) 2017-04-21 2018-10-25 Ringers Technologies Llc Gants de protection
US10701993B2 (en) 2017-09-29 2020-07-07 Ringers Technologies Llc Industrial impact safety glove
DE102018128839A1 (de) * 2018-11-16 2020-05-20 W + R Gmbh Handschuh und Verfahren zur Herstellung eines Handschuhs
USD920586S1 (en) 2019-03-29 2021-05-25 DigiShield LLC Finger protector
AU2020383428A1 (en) * 2019-11-11 2022-06-09 Mechanix Wear Llc Glove with reinforced fingers

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RU2425611C1 (ru) * 2010-06-11 2011-08-10 Федеральное государственное унитарное предприятие Южно-Уральский институт биофизики Федерального медико-биологического агентства (ФГУП ЮУрИБФ) Перчатка защитная

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