EP3165104B1 - Schutzhandschuh mit lebensdaueranzeigeschicht - Google Patents

Schutzhandschuh mit lebensdaueranzeigeschicht Download PDF

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Publication number
EP3165104B1
EP3165104B1 EP15193529.3A EP15193529A EP3165104B1 EP 3165104 B1 EP3165104 B1 EP 3165104B1 EP 15193529 A EP15193529 A EP 15193529A EP 3165104 B1 EP3165104 B1 EP 3165104B1
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EP
European Patent Office
Prior art keywords
layer
protective
glove
protective layer
indicator
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP15193529.3A
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English (en)
French (fr)
Other versions
EP3165104A1 (de
Inventor
Cornel P. Cobianu
Bogdan-Catalin Serban
Octavian Buiu
Cristian Diaconu
Viorel Georgel Dumitru
Mihai Gologanu
Eric Farin
Christiane Saunier
Alisa Stratulat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell International Inc
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Honeywell International Inc
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.)
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Publication date
Application filed by Honeywell International Inc filed Critical Honeywell International Inc
Priority to EP15193529.3A priority Critical patent/EP3165104B1/de
Priority to PCT/US2016/058807 priority patent/WO2017079001A1/en
Publication of EP3165104A1 publication Critical patent/EP3165104A1/de
Application granted granted Critical
Publication of EP3165104B1 publication Critical patent/EP3165104B1/de
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/0006—Gloves made of several layers of material
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/0024—Gloves with accessories
    • A41D19/0027—Measuring instruments, e.g. watch, thermometer

Definitions

  • the protective gloves for process industries are constructed to assure people safety under harsh chemical, mechanical and electrical conditions.
  • the glove suppliers provide a big product catalog, where different types of gloves are recommended for different type of chemicals to be handled. Depending on the application and chemical products to which they are exposed, the gloves may have a different type of material and a different thickness of the layers from which they are made of.
  • the gloves In many countries, such as European countries, the gloves have to pass mechanical (EN 388), thermal (EN511), and chemical standards, such as a European standards (EN 374-2, EN 374-3) before they are sent to the market.
  • the gloves should comply with the standard EN 420, which specifies general criteria for comfort, size, dexterity, labeling, and heavy metal content and pH content.
  • EN 420 specifies general criteria for comfort, size, dexterity, labeling, and heavy metal content and pH content.
  • Each standard defines exact test and acceptance conditions for the gloves exposed to critical mechanical, thermal, chemical agents.
  • the standard EN-374-2 characterizes the permeability features of the gloves and it specifies a method for testing the protective gloves resistance to permeation of chemical products (penetration).
  • the standard EN374-3 includes the standard EN 374-2 requirements, and in addition, it requires that the protective glove to pass the performance level 2 of chemical resistance for at least three chemical products (like, methanol, sulfuric acid 96%, 40% sodium hydroxide, tetrahydrofuran, acetone, carbon disulfide, ethyl acetate, etc.)
  • This performance level 2 for chemical resistance means that the permeation time (test made according to the standard) should be higher than or equal to 30 minutes, when the glove is exposed continuously to that chemical.
  • a catalog of gloves for chemical protection during handling of acids and alkalis would include as suitable the latex gloves which can be used in harsh applications for food and beverage industry where cleaning with high concentrated cleaning agents are the most used.
  • Such latex gloves meet the above standard and they are also accompanied by a wide list of permeation data.
  • Related to the protective gloves described above we need to mention that their use in the field is made most of the time without keeping a clear evidence of the time of use during their lifetime, and so in many cases they can be used for a much shorter time with respect to their designed lifetime.
  • the suppliers themselves may be conservative in specifying the level of performance, which means that even if the real level of performance may be 4, the supplier would specify 3, which is lower than 4.
  • US5133087 and US5017427 disclose a laminate structure for gloves in which a color indicator layer is provided as an under layer to a transparent outer layer to indicate any breakage in the outer layer by a color change of the indication layer.
  • EP1637046 discloses gloves having a color change label by adding an ink to the glove material so that the color change can be seen after a period of time.
  • GB2433227 discloses a multilayered material suitable for use in gloves for indicating punctures.
  • a near-end of service life indication is provided for a smart protective glove.
  • the smart protective glove may indicate a remaining operation time of the glove by means of colorimetric principle based on the use of embedded pH indicators in a stack of layers forming the glove. After a certain period of time of use in harsh chemicals, the harsh chemicals will penetrate an outer protective layer of the glove and contact the pH indicators, changing the color of the pH indicator.
  • the pH indicator diffuses back to the outer surface of the glove and result in the glove showing a color change with respect to its background color.
  • Such an event may signify for example that the remaining lifetime left for operation is equal to about 10% of its entire life.
  • An existing process for making gloves may be minimally adjusted to provide the colorimetric indication.
  • FIG. 1 illustrates layers of a glove generally at 100.
  • a first layer 110 is a protective layer, and may be formed of latex or other protective material, like nitrile, chloroprene (e.g. Neoprene, butyl, polyvinyl chloride (PVC), PU, CSM, Fluoro elastomer (e.g. Viton).
  • the first protective layer 110 comprises about 90% of the total of two or more protective layers of the glove.
  • a second embedded pH indicator layer 115 is formed of Bromophenol blue.
  • the second layer 115 may be thin, in the thickness range of 30-60 ⁇ m, but provide enough pH indicator material to provide color change to a visible portion of the first protective layer as the glove reaches 90% of its useful life.
  • a third layer 120 comprises a second protective layer with thickness equal to (the remaining) 10% of the total protective layer thickness, which is then optionally followed by a fourth layer 125 which may be a glue layer, and fifth layer 130 which may be a liner.Note that the fourth and fifth layers may be optional.
  • the second layer is an embedded solid state layer containing a universal pH indicator like bromophenol blue that may be included in the fabrication process of protective gloves.
  • Bromophenol blue provides color changes over a broad range of pH, from basic to acidic.
  • Other pH indicators may also be used in further embodiments, but may have color changes that occur when exposed to solutions over a narrow range of pH, such as only acidic or only basic solutions. When such pH indicators are used, the gloves should be labeled for use in the corresponding solutions.
  • a direct printing process may be used for selectively printing the color change indicator layer 115.
  • Direct printing such as by inkjet printer allows the color changing layer to be masklessly deposited so that alphanumeric characters to be printed with a text like" 10% LEFT" as indicated in FIG. 2 on a glove 200 at 210.
  • the second protective layer 120 may be thicker than that described to provide a longer service life than that specified by the characters in some embodiments. The thickness may depend on how conservative a manufacture desires to be in providing indications of remaining useful life of a glove.
  • a smart glove with color service life indication (SLI) at more different remaining lifetimes (75%, 50%, 25%, 10% for example)
  • direct printing may be performed at different depths as indicated in block form in FIG. 3 at 300 (25%, 50%, 75%, 90%) as a protective layer 310 is formed.
  • Each indicator layer represented at 315, 320, 325, 330 respectivelycan be patterned or shaped to display its ownalphanumeric characters as indicated in FIG. 3 as (75%, 50%, 25%, 10%)"LIFETIME LEFT" corresponding to the depth in the protective layer 310 in which they are printed.
  • the patternedindication layers in one embodiment should be non-overlapping such that as each layer becomes visible, it does not overlap and potentially be obscured by indications provided from a previously layer.
  • Such indications may be sized and located to be easily read by the user.
  • One location is on the glove corresponding to a back of the hand. Fingers may also be exposed to solutions longer, and may also contain indicators.
  • the last indicator layer may be a full layer that colors most of the surface of the glove indicating little life remaining.
  • the activation mechanism causing the indicator layer to produce a visible indication at an external surface of the glove occurs by exposure of the smart glove to vapors and liquid state of the chemicals mentioned, referred to as a solution.
  • a solution In the body of the protective layers of the gloves there are always nanopores which are filled with air, and these nanopores are at the origin of the liquid permeation process. This means that the liquid molecules can diffuse inside the protective layer via those pores and after a certain time they can penetrate the entire thickness of the protective layer. This time is called the breakdown time of the protective layer in a certain solution. The breakdown time of a protective layer will depend on its thickness, the magnitude of the permeating liquid molecule and the size of the nanopores.
  • a background color of white for the glove may provide for maximum contrast of the indication color.
  • the color will be changed according to the overall pH of the liquid in the pores after gloveexposure to both acids and bases, and solvents, i.e., the solution.
  • This concept of smart colorimetric NESLI/SLI glove can be applied to all types of chemically protective gloves.
  • the fabrication process of the smart gloves with multiple colorimetric service life indicators SLI (75%, 50%, 25%, 10%) may bemade utilizing a hybrid or printed technologies from above.
  • the process for getting these multiple service life indications derives from the examples from above.
  • the multiple service life indications may avoid overlapping such that indications showing a longer service life remaining do not obscure indications of less service life remaining.
  • the last indicator layer may be dip coated causing the entire glove to change color with a selected percentage of the protective life of the glove remaining.
  • An automated factory for fabrication of printed NESLI/SLI protective gloves may involve moving the HSF on a line from one location to another for receiving the right process.
  • the same or separate dip coating vats of latex may be utilized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Gloves (AREA)

Claims (11)

  1. Schutzhandschuh (100, 200, 300), gebildet aus mehreren Schichten, zum Schutz eines Trägers gegen aggressive Chemikalien, wobei der Schutzhandschuh umfasst:
    eine erste Schutzschicht (110, 310) mit einer oberen Oberfläche und einer unteren Oberfläche und mit luftgefüllten Nanoporen;
    eine Indikatorschicht (115, 315, 320, 325, 330), die an der unteren Oberfläche der ersten Schutzschicht (110, 310) in dem Handschuh eingebettet ist und aus einem Indikatormaterial besteht, das die Farbe einer aggressiven chemischen Lösung verändert, wenn es gegenüber der aggressiven chemischen Lösung exponiert wird, die durch die Nanoporen der ersten Schutzschicht (110, 310) dringt, wobei die Indikatorschicht (115, 315, 320, 325, 330) den pH-Indikator Bromphenolblau umfasst, der eine Farbe erzeugt, die dem pH-Wert der Lösung entspricht, wobei die Nanoporen in der ersten Schutzschicht und das Indikatormaterial dafür ausgelegt sind, zu erlauben, dass die Farbveränderung der aggressiven chemischen Lösung durch Diffusion des Indikatormaterials durch die Nanoporen über den Konzentrationsgradienten und Kapillarkräfte zu der oberen Oberfläche der ersten Schutzschichten an der oberen Oberfläche der ersten Schutzschicht (110, 310) sichtbar wird; und
    eine zweite Schutzschicht (120, 310), die so gestaltet ist, dass die Indikatorschicht (115, 315, 320, 325, 330) zwischen der zweiten Schutzschicht (120, 310) und der ersten Schutzschicht (110, 310) angeordnet ist.
  2. Schutzhandschuh (100, 200, 300) gemäß Anspruch 1, wobei die erste Schutzschicht (110, 310) etwa 90 % der Summe der ersten und der zweiten Schutzschicht des Handschuhs (100, 200, 300) bereitstellt.
  3. Schutzhandschuh (100, 200, 300) gemäß Anspruch 1 oder Anspruch 2, wobei die Schutzschichten (110, 310, 120) natürliche oder synthetische Gitter umfassen.
  4. Schutzhandschuh (100, 200, 300) gemäß einem der Ansprüche 1 bis 3, wobei die Indikatorschicht (115, 315, 320, 325, 330) eine kontinuierliche Schicht ist.
  5. Schutzhandschuh (100, 200, 300) gemäß einem der Ansprüche 1 bis 4, ferner umfassend mehrere strukturierte Indikatorschichten (315, 320, 325, 330), die in verschiedenen Tiefen der ersten Schutzschicht (110, 310) eingebettet sind.
  6. Schutzhandschuh (100, 200, 300) gemäß einem der Ansprüche 1 bis 5, wobei die erste Schutzschicht (110, 310) Latex umfasst.
  7. Verfahren zur Herstellung des Schutzhandschuhs (100, 200, 300) gemäß Anspruch 1, wobei das Verfahren umfasst:
    Tauchbeschichten einer handförmigen Formvorrichtung in einem Bad, um die erste Schutzschicht (110, 310) mit einer ersten Dicke zu bilden;
    Bilden der Indikatorschicht (115, 315, 320, 325, 330) auf der ersten Schutzschicht (110, 310); und
    Tauchbeschichten der handförmigen Formvorrichtung in einem Bad, um die zweite Schutzschicht (120, 310) mit einer zweiten Dicke zu bilden.
  8. Verfahren gemäß Anspruch 7, wobei das Bilden der Indikatorschicht (115, 315, 320, 325, 330) auf der ersten Schutzschicht (110, 310) Tauchbeschichten der handförmigen Formvorrichtung, die die erste Schutzbeschichtung aufweist, in einem Bad, das eine Bromphenolblau-Aufschlämmung enthält, umfasst, um die Indikatorschicht (115, 315, 320, 325, 330), die Bromphenolblau umfasst, zu bilden.
  9. Verfahren gemäß Anspruch 8, wobei die Bromphenolblau-Aufschlämmung Bromphenolblau-Pulver, Alkohol, ein grenzflächenaktives Mittel und ein viskositätserhöhendes Harzmittel umfasst.
  10. Verfahren gemäß einem der Ansprüche 7-9, wobei das Bilden der Indikatorschicht (115, 315, 320, 325, 330) auf der ersten Schutzschicht (110, 310) Drucken der Indikatorschicht (115, 315, 320, 325, 330) in einer Struktur umfasst.
  11. Verfahren gemäß einem der Ansprüche 7-10, ferner umfassend:
    Tauchbeschichten der handförmigen Formvorrichtung mit der zweiten Schutzschicht (120, 310) in einem Klebstoffbad, um eine Klebstoffschicht (125) zu bilden; und
    Anfügen einer Auskleidung (130) an die Klebstoffschicht (125).
EP15193529.3A 2015-11-06 2015-11-06 Schutzhandschuh mit lebensdaueranzeigeschicht Active EP3165104B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15193529.3A EP3165104B1 (de) 2015-11-06 2015-11-06 Schutzhandschuh mit lebensdaueranzeigeschicht
PCT/US2016/058807 WO2017079001A1 (en) 2015-11-06 2016-10-26 Protective glove with service life indicator layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15193529.3A EP3165104B1 (de) 2015-11-06 2015-11-06 Schutzhandschuh mit lebensdaueranzeigeschicht

Publications (2)

Publication Number Publication Date
EP3165104A1 EP3165104A1 (de) 2017-05-10
EP3165104B1 true EP3165104B1 (de) 2019-02-27

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EP15193529.3A Active EP3165104B1 (de) 2015-11-06 2015-11-06 Schutzhandschuh mit lebensdaueranzeigeschicht

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WO (1) WO2017079001A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3375309B1 (de) * 2017-03-16 2021-06-16 Honeywell International Inc. Intelligente schutzhandschuhe mit abgedichteter kolorimetrischer schicht

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63144040A (ja) * 1986-12-08 1988-06-16 横浜ゴム株式会社 インジケ−タ−機能を有する積層体
US5133087A (en) * 1986-12-08 1992-07-28 The Yokohama Rubber Co., Ltd. Laminate having indicator function
US5650329A (en) * 1990-08-23 1997-07-22 Awc. Inc. Acid indicators
US20060059603A1 (en) * 2004-09-21 2006-03-23 Shuo Peng Gloves with a visual indicator to remind change
GB0525720D0 (en) * 2005-12-16 2006-01-25 Regent Medical Ltd Puncture-indicating laminates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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EP3165104A1 (de) 2017-05-10
WO2017079001A1 (en) 2017-05-11

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