(19)
(11)EP 3 206 520 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
04.12.2019 Bulletin 2019/49

(21)Application number: 15849952.5

(22)Date of filing:  13.10.2015
(51)Int. Cl.: 
A41D 19/00  (2006.01)
A41D 19/04  (2006.01)
B29C 41/40  (2006.01)
A41D 19/015  (2006.01)
B29C 41/14  (2006.01)
B29C 33/42  (2006.01)
(86)International application number:
PCT/AU2015/000614
(87)International publication number:
WO 2016/058029 (21.04.2016 Gazette  2016/16)

(54)

TEXTURED GLOVES, METHOD OF MAKING AND GLOVE FORMER

TEXTURIERTE HANDSCHUHE, VERFAHREN ZUR HERSTELLUNG UND HANDSCHUHFORM

GANTS TEXTURÉS, PROCÉDÉ DE FABRICATION ET FORMES POUR GANTS


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 14.10.2014 US 201462063531 P
07.01.2015 US 201562100610 P

(43)Date of publication of application:
23.08.2017 Bulletin 2017/34

(73)Proprietor: Ansell Limited
Richmond, Victoria 3121 (AU)

(72)Inventors:
  • MEGAT ABDUL AZIZ, Putri Faridatul Akmar
    40160 Shah Alam Selangor (MY)
  • CHIN, Mei Yee
    43300 Seri Kembangan Selangor (MY)
  • ZAWAWI, Mohd Fairuz Bin Mohd
    41050 Klang Selangor (MY)
  • RASTAM, Norazilayati Binti
    40000 Shah Alam Selangor (MY)

(74)Representative: AWA Sweden AB 
P.O. Box 5117
200 71 Malmö
200 71 Malmö (SE)


(56)References cited: : 
GB-A- 1 310 711
US-A- 6 081 928
US-A1- 2007 126 149
US-A1- 2012 137 404
US-A1- 2013 291 283
US-B1- 6 732 735
US-A- 5 993 923
US-A- 6 143 416
US-A1- 2011 191 936
US-A1- 2012 137 404
US-A1- 2013 291 283
US-B2- 7 771 644
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present application relates generally to nitrile gloves with molded texture at the finger tips, polymeric gloves with molded texture at the fingertips and containing a multivalent metal ion salt of an organic acid with logP of about 4 to about 15, and a method of making.

    [0002] Methods of dip moulding gloves with improved grip using glove formers with a certain surface roughness are known from US 2013/291283 A1 and US 6 143 416 A . US 2013/291283 A1 discloses in paragraph 42 a roughness Ra of about 9 micrometer and peak count Rpc of about 20 for glove formers. US 6 143 416 A discloses, that in the case of using formers for tacky polyurethane, improved grip and tack properties are achieved with a former where the distance between profile peaks at the measured mean line (Sm) is generally in the range 30 to 70 micrometres. In seeking to produce texture on the surface of a single dip polymeric glove by a texture structure found at the surface of the dipping former, it is extremely difficult to produce a glove that has good grip while being reliably formed without holes. It has now been unexpectedly found that good grip can be obtained by carefully selecting certain roughness parameters for the former.

    SUMMARY



    [0003] Provided is a glove according to claim 1.

    [0004] Provided is a method of making such a glove according to claim 6.

    [0005] Also provided is a former for making a glove (such as a single dip nitrile glove) having one or more textured finger tips wherein the former has the following properties at the corresponding finger tip regions:
      (micrometer)
    Ra Av. roughness about 7 - 14
    Rsm Mean width of roughness about 500 - 720
    Rpc Peak count about 15 - 20

    DESCRIPTION OF THE DRAWINGS



    [0006] So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only illustrative embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.

    FIG. 1 depicts a glove with texture;

    FIG. 2 shows the texture in expanded view;

    FIG. 3 shows an exemplary method of making; and

    FIG. 4 shows a former for imparting texture.



    [0007] To facilitate understanding, identical reference numerals have been used, where possible, to designate comparable elements that are common to the figures. The figures are not drawn to scale and may be simplified for clarity. It is contemplated that elements and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

    DETAILED DESCRIPTION



    [0008] The glove has one or more textured finger tips. texturing can be on one side, since the gripping side of a finger is on one side. However, it will often be convenient to form the grip on both sides. Grip texture can be at a finger tip, such as about 50% of the way down to the first knuckle crease. Or, texture can be found further down the finger. In embodiments, 2, 3, 4 or 5 fingers have texture. Texture can be formed more generally, but is particularly useful at the finger tips.

    [0009] FIG. 1 depicts the palm side of a glove 10 with texture at 12 at the finger tips.

    [0010] FIG. 2 shows the texture in expanded view. Each line on the superimposed scale is 1 mm. While the vertical scale is not apparent, the surface was created with, and the thus a reverse image of, a former with the Ra, Rsm, Rpc, Rz, Rmax, Rp and Rv parameters of the narrower ranges recited below.

    [0011] In embodiments elastomeric layer is primarily acrylonitrile butadiene copolymer (NBR or "nitrile") by polymer content weight (e.g. 80% or more), thus forming for the purposes of this application a "nitrile glove.' Other polymers may be natural rubber latex (including Guayule latex), other synthetic rubber latex, or the like, and combinations thereof. The synthetic rubber latex may be selected, for example, from the group comprised of polychloroprene, polyisoprene, polyurethane, styrene-butadiene, butyl, and combinations thereof. The nitrile can include carboxylated acrylonitrile butadiene copolymer. In embodiments, it is highly carboxylated.

    [0012] The texture at the finger tips results from forming the glove on a former having one or more of the following values (from about value A to about value B):
      (micrometer)or (micrometer)
    Ra Av. roughness 7 - 14 8 - 12
    Rsm Mean width of roughness 500 - 720 610 - 700
    Rpc Peak count 15 - 20 16 - 19


    [0013] In embodiments, Ra is about 9, 10, 11 or 12. In embodiments, Rsm is about 500, 630, 650 or 670. In embodiments, Rpc is about 17, 18 or 19.

    [0014] In embodiments, the former of the invention and used in the invention has one or more of the following roughness properties (from about value A to about value B):
      (micrometer)or (micrometer)
    Rz Mean roughness depth 30 - 50 30 - 45
    Rmax Largest roughness depth 40 - 70 40 - 65
    Rp Height of the highest peak 8 - 22 10 - 20
    Rv Depth of deepest valley 16 - 35 18 - 30


    [0015] In embodiments, Rz is 34, 38, 40 or 42. In embodiments, Rmax is about 47, 53 or 60. In embodiments, Rp is about 13, 15, 17 or 20. In embodiments, Rv is 20, 21, 24 or 27.

    [0016] The above parameters are as measured by a Perthometer (Mahr GmbH, Göttingen, Germany), with the stylus running at constant speed across 0.22 in (5.6 mm) length of surface. The Roughness profile R describes the departure from the mean line. The average roughness is calculated as described is the arithmetic average of the absolute values of the roughness profile ordinates.

    [0017] In embodiments, the former is ceramic.

    [0018] Gloves formed on the above formers can be tested for falling within the claims by reverse molding. For example, the glove can be treated with a release agent if needed, inverted, and used as a mold for a self-curing polymer mixture that solidifies to sufficient hardness to allow for measurement with the Perthometer device. Perthometer values within the above ranges indicate that the former used falls within the above values.

    [0019] It is believed that better results are obtained in the manufacturing process if the temperature of the leaching process is about 50°C, such as about 45 to about 55°C. The temperature of the gelling (vulcanization) oven can about 120 to about 160°C, such as 125°, 135°, 145° or 155°.

    [0020] It is believed that better results are obtained in the manufacturing process if the coagulant used in the dipping step includes a fatty acid salt. For example, the following can be used:
    Material% W/W
    Water 70
    Calcium nitrate 24.5
    calcium stearate 5.5


    [0021] In methods of the invention, the coagulant composition can for example comprise multivalent metal ion salt of an organic acid with logP of about 4 to about 15. In all embodiments with an organic acid salt, the organic acid can a for example C14 to C30 fatty acid (whether or not within the logP parameters). In all embodiments with an organic acid salt, the organic acid can be a for example C16 to C20 fatty acid. In all embodiments with an organic acid salt, the multivalent metal ion can be for example Ca, Mg, Zn or Al. In all embodiments with an organic acid salt, the multivalent metal ion can be Ca. In all embodiments with an organic acid salt, such a salt can for example comprises about 5 to about 50% by wt (e.g., 18%) of coagulant compounds in the coagulant composition.

    [0022] In embodiments, the gloves of the invention comprise a multivalent metal ion salt of an organic acid consistent with any of the above (e.g., C14-C30, even if not with above logP range). The amount present can be the residue remaining after a post-dipping leaching or washing.

    [0023] In embodiments of the gloves that contain the fatty acid salt (by any definition herein), the polymer of the outer layer can be natural rubber latex (including Guayule latex), other synthetic rubber latex, or the like, and combinations thereof. In embodiments, such a glove is a single dip glove.

    [0024] Fig. 3 shows an exemplary process for forming the article of the invention. Step 202 (optional) is cleaning the textured former. Step 204 is applying coagulant to the former. In the illustrative embodiment, the coagulant is composition is dried at 60 - 80° C. In step 206, the former is dipped in elastomer composition (compound). In step 208 (optional), the dipped former is dried, for example if a glove with the fingers pointing down.

    [0025] In step 210 (optional), the article on the dipped former is leached. For example, leaching can be conducted at a moderately elevated temperature that effects some cross-linking. In step 212, the article on the former is cured. In step 214 (optional), the article (typically after stripping from the former) is washed and dried.

    Principle of the Test Method



    [0026] The method uses a 1.0 kg or 1.5 kg weight (e.g., metallic), and measures "Pull Force" needed to grip test bar for lifting the weight, and a "Catch Force" needed to re-grip the test bar after letting it slip.

    [0027] The test is used to measure the pinch grip performance of glove in grip force (kgf) in a systematic pattern of a pinch grip task. The subject uses only the tips of the first finger and thumb to grip the grip bar. Sufficient grip force between the finger and thumb is required to enable the grip bar to be held in control so that it can then be pulled down in a fixed distance without slipping ("Pull Force"). The pulling down action effectively lifts a specific mass (1.0 kg or/and 1.5 kg) on the other side of a pulley. The grip bar is then released, allowed to slip and then re-gripped ("Catch Force"). Finally the grip bar is returned to the stationary initial position in a controlled manner. The grip bar is wetted with water or covered with oil when performing wet or oil pinch grip test respectively.
    Table: Test Procedure
    General
    a) Apply minimum grip force around a grip bar which is sufficient to lift up a certain load.
    b) The tester shall use only the tips of the first finger and thumb to grip the grip
    c) Preferably use the same size and same side of gloves when conducting the test.
    d) The tester shall perform the test by using the dominant hand.
    e) The wrist shall be rested on a support (e.g., the lower height indicator block) when re-gripping the slipping grip bar.
    Test Procedure - Dry
    a) 2 x 500 g standard weights are slotted onto the mass-holder to provide a 1.0 kg load.
    b) The grip bar is cleaned with ethanol and dried to remove any contamination.
    c) The tester shall follow the procedure in Table D (below).
    d) Repeat Table D steps until three repetitions have been performed for the same glove specimen.
    e) 3 x 500 g standard weights are slotted onto the mass-holder to provide a 1.5 kg load.
    f) Repeat Table D steps for lifting up the load of 1.5 kg and until three repetitions have been performed for the same glove specimen.
    g) Unless otherwise specified, two tests on each sample should be carried out.
    Test Procedure - Wet
    The same procedure is repeated, but adding the following after step b):
    b-1) Approximately 1.0 ml of water is dripped onto a gauze using a pipettor.
    b-2) Both sides of the grip bar are then wiped with the wetted gauze.
    Test Procedure - Oil
    The same procedure is repeated, but adding the following after step b):
    b-1*) Approximately 1.0 ml of oil (Shell Rimula X 15W-40) is dripped onto a gauze using a pipettor.
    b-2*) Both sides of the grip bar are then wiped with the wetted gauze.
    Test Procedure - IPA
    The same procedure is repeated, but adding the following after step b):
    b-1) Approximately 1.0 ml of isopropyl alcohol is dripped onto a gauze using a pipettor.
    b-2) Both sides of the grip bar are then wiped with the wetted gauze.
    Table D
    TaskAction
    1 - Tester uses only the tips of the first finger and thumb to grip the grip bar at the pre-marked position
    - The gloved hand applies just sufficient grip force to pull the grip bar down vertically
    2 - The gloved hand's wrist reaches the lower height indicator and stops
    - Tester releases grip allowing the grip bar to slip through the fingers whilst keeping the wrist at the lower height indicator
    3 - Tester re-grips grip bar and stops its movement whilst keeping the wrist at the lower height indicator
    - Tester moves grip bar up vertically
    4 - Tester releases grip when the grip bar reaches its initial stationary position


    [0028] With gloves of the invention, the following oil grip values were obtained:
    1.0 kg Load
    Catch Force (Kgf)Max Pull Down Force (Kgf)
    4.25 1.85


    [0029] With gloves of the invention, the following dry grip values were obtained:
    1.0 kg Load1.5 kg Load
    Catch Force (Kgf)Max Pull Down Force (Kgf)Catch Force (Kgf)Max Pull Down Force (Kgf)
    0.12 0.15 0.35 0.22


    [0030] With gloves of the invention, the following wet grip values were obtained:
    1.0 kg Load1.5 kg Load
    Catch Force (Kgf)Max Pull Down Force (Kgf)Catch Force (Kgf)Max Pull Down Force (Kgf)
    0.16 0.17 0.5 0.28


    [0031] With gloves of the invention, the following IPA grip values were obtained:
    1.0 kg Load1.5 kg Load
    Catch Force (Kgf)Max Pull Down Force (Kgf)Catch Force (Kgf)Max Pull Down Force (Kgf)
    1.12 0.31 4.55 1.42


    [0032] In embodiments, gloves of the invention achieve grip values of about 1.5 x the values listed above (rounded to the nearest 0.01 value) or less, or about 1.4 x or less, or about 1.3 x or less, or about 1.2 x or less, or about 1.1 x or less. In embodiments, gloves of the invention achieve grip values of about 0.5 x the values listed above (rounded to the nearest 0.01 value) or more, or about 0.7 x or more, or about 0.85 x or more. These values apply to gloves of any of the embodiments described above.

    [0033] Formers for use in the invention can be manufactured by casting, selectively sandblasted to form texture, or the like. FIG. 4 depicts a former of the invention in the form of a glove former 310, with the palm side having texture at 312 at the finger tips.

    [0034] The invention can be described further with reference to the following embodiments:
    Embodiment 1: A glove formed by latex dipping having one or more textured finger tips wherein: the texture at one or more finger tips results from forming the glove on a former having the following corresponding surface properties:
      (micrometer)
    Ra Av. roughness about 7 - 14
    Rsm Mean width of roughness about 500 - 720
    Rpc Peak count about 15 - 20
    ; and the glove being non-chlorinated, wherein the glove is a (i) single dip nitrile glove or (ii) a dipped glove with a so textured layer formed of polymer latex, and comprising a multivalent metal ion salt of an organic acid with logP of about 4 to about 15.
    Embodiment 2: The glove of Embodiment 1, wherein the former has one or more of the following properties at the corresponding finer tip surfaces:
      (micrometer)
    Rz Mean roughness depth about 30 - 50
    Rmax Largest roughness depth about 40 - 70
    Rp Height of the highest peak about 8 - 22
    Rv Depth of deepest valley about 16 - 35

    Embodiment 3: The glove of Embodiment 2, wherein the former has one or more of the following properties at the corresponding finer tip surfaces:
      (micrometer)
    Ra Av. roughness about 8 - 12
    Rsm Mean width of roughness about 610 - 700
    Rpc Peak count about 16 - 19

    Embodiment 4: The glove of Embodiment 3, wherein the former has one or more of the following properties at the corresponding finer tip surfaces:
      (micrometer)
    Rz Mean roughness depth about 30 - 45
    Rmax Largest roughness depth about 40 - 65
    Rp Height of the highest peak about 10 - 20
    Rv Depth of deepest valley about 18 - 30

    Embodiment 5: The glove of one of Embodiments 1 to 4, comprising a multivalent metal ion salt of an organic acid with logP of about 4 to about 15.
    Embodiment 6: The glove of one of Embodiments 1 to 5, wherein the wet catch force with a 1.0 kg load is about 0.24 kgf or less.
    Embodiment 7: The glove of one of Embodiments 1 to 6, wherein the wet catch force with a 1.5 kg load is about 0.75 kgf or less.
    Embodiment 8: A method of forming a glove comprising: coating a glove former with coagulant; applying a coagulable elastomer formulation to the coagulant coated former so that the former is coated with coagulated elastomer; and curing the elastomer coating, wherein former has the following properties:
      (micrometer)
    Ra Av. roughness about 7 - 14
    Rsm Mean width of roughness about 500 - 720
    Rpc Peak count about 15 - 20
    and, wherein the glove formed is a (i) single dip nitrile glove or (ii) a dipped glove with a so textured layer formed of natural rubber latex or rubber latex, and comprising a multivalent metal ion salt of an organic acid with logP of about 4 to about 15.
    Embodiment 9: The method of Embodiment 8, wherein the former has one or more of the following properties:
      (micrometer)
    Rz Mean roughness depth about 30 - 50
    Rmax Largest roughness depth about 40 - 70
    Rp Height of the highest peak about 8 - 22
    Rv Depth of deepest valley about 16 - 35

    Embodiment 10: The method of Embodiment 9, wherein the former has one or more of the following properties:
      (micrometer)
    Ra Av. roughness about 8 - 12
    Rsm Mean width of roughness about 610 - 700
    Rpc Peak count about 16 - 19

    Embodiment 11: The method of Embodiment 10, wherein the former has one or more of the following properties:
      (micrometer)
    Rz Mean roughness depth about 30 - 45
    Rmax Largest roughness depth about 40 - 65
    Rp Height of the highest peak about 10 - 20
    Rv Depth of deepest valley about 18 - 30

    Embodiment 12: The method of one of Embodiments 8 to 11, wherein the coagulant coating is conducted with a composition comprising a multivalent metal ion salt of an organic acid with logP of about 4 to about 15.
    Embodiment 13: The method of one of Embodiments 8 to 12, wherein the organic acid is a C14 to C30 fatty acid.
    Embodiment 14: The method of one of Embodiments 8 to 13, wherein the organic acid is a C16 to C20 fatty acid.
    Embodiment 15: The method of one of Embodiments 12 to 14, wherein the multivalent metal ion salt comprises about 5 to about 50% by wt of coagulant compounds in the coagulant composition.

    [0035] All ranges recited herein include ranges therebetween, and can be inclusive or exclusive of the endpoints. Optional included ranges are from integer values therebetween (or inclusive of one original endpoint), at the order of magnitude recited or the next smaller order of magnitude. For example, if the lower range value is 0.2, optional included endpoints can be 0.3, 0.4, ... 1.1, 1.2, and the like, as well as 1, 2, 3 and the like; if the higher range is 8, optional included endpoints can be 7, 6, and the like, as well as 7.9, 7.8, and the like. One-sided boundaries, such as 3 or more, similarly include consistent boundaries (or ranges) starting at integer values at the recited order of magnitude or one lower. For example, 3 or more includes 4 or more, or 3.1 or more.

    [0036] Where a sentence herein states that its subject is found in embodiments, or in certain embodiments, or in the like, it is applicable to any embodiment in which the subject matter can be logically applied. This invention described herein is of textured gloves, methods of forming the same, and formers for making the gloves. Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the present invention as defined by the following claims.


    Claims

    1. A latex dip glove having one or more textured finger tips wherein: the texture at one or more finger tips is a reverse image of a former, used in the forming of the glove, having one or more surfaces on fingertip regions with the following properties:
      (micrometer)
    Ra Av. roughness about 7 - 14
    Rsm Mean width of roughness about 500 - 720
    Rpc Peak count about 15 - 20
    ; and the glove being non-chlorinated, wherein the glove is a (i) single dip nitrile glove or (ii) a dipped glove with a so textured layer formed of polymer latex, and said glove comprising a multivalent metal ion salt of an organic acid with logP of about 4 to about 15, preferably the glove is a nitrile glove.
     
    2. The latex dip glove of claim 1, wherein the former has one or more of the following properties at the corresponding finer tip surfaces:
      (micrometer)
    Ra Av. roughness about 8 - 12
    Rsm Mean width of roughness about 610 - 700
    Rpc Peak count about 16 - 19

     
    3. The latex dip glove of claim 1 or 2, wherein the former has one or more of the following properties at the corresponding finer tip surfaces:
      (micrometer)
    Rz Mean roughness depth about 30 - 50
    Rmax Largest roughness depth about 40 - 70
    Rp Height of the highest peak about 8 - 22
    Rv Depth of deepest valley about 16 - 35

     
    4. The latex dip glove of one of claims 1 to 3, wherein the multivalent metal ion salt of an organic acid is a C14 to C30 fatty acid salt.
     
    5. The latex dip glove of one of claims 1 to 4, wherein the wet catch force with a 1.0 kg load is about 0.24 kgf or less, optionally wherein the wet catch force with a 1.5 kg load is about 0.75 kgf or less.
     
    6. A method of forming a glove comprising:

    coating a glove former with coagulant;

    applying a coagulable elastomer formulation to the coagulant coated former so that the former is coated with coagulated elastomer; and

    curing the elastomer coating, wherein the former has one or more surfaces on finger tip regions with the following properties:

      (micrometer)
    Ra Av. roughness about 7 - 14
    Rsm Mean width of roughness about 500 - 720
    Rpc Peak count about 15 - 20
    and, wherein the glove formed is a (i) single dip nitrile glove or (ii) a dipped glove with a so textured layer formed of natural rubber latex or rubber latex, and said glove having one or more textured finger tips resulting from forming the glove on the former, and comprising a multivalent metal ion salt of an organic acid with logP of about 4 to about 15.


     
    7. The method of claim 6, wherein the former has one or more of the following properties:
      (micrometer)
    Rz Mean roughness depth about 30 - 50
    Rmax Largest roughness depth about 40 - 70
    Rp Height of the highest peak about 8 - 22
    Rv Depth of deepest valley about 16 - 35

     
    8. The method of one of claims 6 or 7, wherein the former has one or more of the following properties:
      (micrometer)
    Ra Av. roughness about 8 - 12
    Rsm Mean width of roughness about 610 - 700
    Rpc Peak count about 16 - 19

     
    9. The method of one of claims 6 to 8 wherein the coagulant coating is conducted with a composition comprising a multivalent metal ion salt of an organic acid with logP of about 4 to about 15.
     
    10. The method of one of claims 6 to 9, wherein the organic acid is a C14 to C30 fatty acid, optionally wherein the organic acid is a C16 to C20 fatty acid.
     
    11. The method of one of claims 9 to 10, wherein the multivalent metal ion salt comprises about 5 to about 50% by wt of coagulant compounds in the coagulant composition.
     
    12. A glove former having one or more surfaces on finger tip regions with the following properties:
      (micrometer)
    Ra Av. roughness about 7 - 14
    Rsm Mean width of roughness about 500 - 720
    Rpc Peak count about 15 - 20

     
    13. The glove former of claim 12, wherein the former has one or more of the following properties at said finger tip regions:
      (micrometer)
    Rz Mean roughness depth about 30 - 50
    Rmax Largest roughness depth about 40 - 70
    Rp Height of the highest peak about 8 - 22
    Rv Depth of deepest valley about 16 - 35

     
    14. The glove former of one of claims 12 or 13, wherein the former has one or more of the following properties at said finger tip regions:
      (micrometer)
    Ra Av. roughness about 8 - 12
    Rsm Mean width of roughness about 610 - 700
    Rpc Peak count about 16 - 19

     
    15. The glove former of one of claims 12 to 14, wherein the former has one or more of the following properties at said finger tip regions:
      (micrometer)
    Rz Mean roughness depth about 30 - 45
    Rmax Largest roughness depth about 40 - 65
    Rp Height of the highest peak about 10 - 20
    Rv Depth of deepest valley about 18 - 30

     


    Ansprüche

    1. Latex-tauchgeformter Handschuh mit einer oder mehreren texturierten Fingerspitzen, wobei: die Textur an einer oder mehreren Fingerspitzen ein Umkehrbild einer bei der Herstellung des Handschuhs verwendeten Tauchform ist, die eine oder mehrere Oberflächen an Fingerspitzenbereichen mit den folgenden Eigenschaften aufweist:
      (Mikrometer)
    Ra Mittl. Rauigkeit etwa 7-14
    Rsm Mittlere Weite der Rauigkeit etwa 500-720
    Rpc Zahl der Scheitel etwa 15-20
    und der Handschuh nichtchloriert ist, wobei der Handschuh (i) ein Einzeleintauch-Nitrilhandschuh oder (ii) ein tauchgeformter Handschuh mit einer so texturierten Schicht aus Polymerlatex ist, und der Handschuh ein Salz eines mehrwertigen Metallions mit einer organischen Säure mit einem logP-Wert von etwa 4 bis etwa 15 umfasst, wobei der Handschuh vorzugsweise ein Nitrilhandschuh ist.
     
    2. Latex-tauchgeformter Handschuh gemäß Anspruch 1, wobei die Tauchform eine oder mehrere der folgenden Eigenschaften an den entsprechenden Fingerspitzenoberflächen aufweist:
      (Mikrometer)
    Ra Mittl. Rauigkeit etwa 8-12
    Rsm Mittlere Weite der Rauigkeit etwa 610-700
    Rpc Zahl der Scheitel etwa 16-19

     
    3. Latex-tauchgeformter Handschuh gemäß Anspruch 1 oder 2, wobei die Tauchform eine oder mehrere der folgenden Eigenschaften an den entsprechenden Fingerspitzenoberflächen aufweist:
      (Mikrometer)
    Rz Mittlere Rauigkeitstiefe etwa 30-50
    Rmax Größte Rauigkeitstiefe etwa 40-70
    Rp Höhe des höchsten Scheitels etwa 8-22
    Rv Tiefe der tiefsten Senke etwa 16-35

     
    4. Latex-tauchgeformter Handschuh gemäß einem der Ansprüche 1 bis 3, wobei das Salz eines mehrwertigen Metallions mit einer organischen Säure ein C14- bis C30-Fettsäuresalz ist.
     
    5. Latex-tauchgeformter Handschuh gemäß einem der Ansprüche 1 bis 4, wobei die Nass-Greifkraft mit einer Last von 1,0 kg etwa 0,24 kgf oder weniger beträgt, wobei die Nass-Greifkraft mit einer Last von 1,5 kg gegebenenfalls etwa 0,75 kgf oder weniger beträgt.
     
    6. Verfahren zur Herstellung eines Handschuhs, umfassend:

    Beschichten einer Handschuh-Tauchform mit Koagulationsmittel;

    Aufbringen einer koagulierbaren Elastomerformulierung auf die koagulationsmittelbeschichtete Tauchform, so dass die Tauchform mit koaguliertem Elastomer beschichtet ist; und

    Vulkanisieren der Elastomerbeschichtung, wobei die Tauchform eine oder mehrere Oberflächen an den Fingerspitzenbereichen mit den folgenden Eigenschaften aufweist:

      (Mikrometer)
    Ra Mittl. Rauigkeit etwa 7-14
    Rsm Mittlere Weite der Rauigkeit etwa 500-720
    Rpc Zahl der Scheitel etwa 15-20
    und wobei der gebildete Handschuh (i) ein Einzeleintauch-Nitrilhandschuh oder (ii) ein tauchgeformter Handschuh mit einer so texturierten Schicht aus Naturkautschuklatex oder Kautschuklatex ist, und der Handschuh eine oder mehrere texturierte Fingerspitzen aufweist, die durch Formen des Handschuhs auf der Tauchform gebildet sind, und ein Salz eines mehrwertigen Metallions mit einer organischen Säure mit einem logP-Wert von etwa 4 bis etwa 15 umfasst.


     
    7. Verfahren gemäß Anspruch 6, wobei die Tauchform eine oder mehrere der folgenden Eigenschaften aufweist:
      (Mikrometer)
    Rz Mittlere Rauigkeitstiefe etwa 30-50
    Rmax Größte Rauigkeitstiefe etwa 40-70
    Rp Höhe des höchsten Scheitels etwa 8-22
    Rv Tiefe der tiefsten Senke etwa 16-35

     
    8. Verfahren gemäß einem der Ansprüche 6 oder 7, wobei die Tauchform eine oder mehrere der folgenden Eigenschaften aufweist:
      (Mikrometer)
    Ra Mittl. Rauigkeit etwa 8-12
    Rsm Mittlere Weite der Rauigkeit etwa 610-700
    Rpc Zahl der Scheitel etwa 16-19

     
    9. Verfahren gemäß einem der Ansprüche 6 bis 8, wobei die Koagulationsmittelbeschichtung mit einer Zusammensetzung durchgeführt wird, die ein Salz eines mehrwertigen Metallions mit einer organischen Säure mit einem logP-Wert von etwa 4 bis etwa 15 umfasst.
     
    10. Verfahren gemäß einem der Ansprüche 6 bis 9, wobei die organische Säure eine C14- bis C30-Fettsäure ist, wobei die organische Säure gegebenenfalls eine C16- bis C20-Fettsäure ist.
     
    11. Verfahren gemäß einem der Ansprüche 9 bis 10, wobei das Salz eines mehrwertigen Metallions etwa 5 bis etwa 50 Gew.-% an Koagulationsmittelverbindungen in der Koagulationsmittelzusammensetzung umfasst.
     
    12. Handschuh-Tauchform mit einer oder mehreren Oberflächen an Fingerspitzenbereichen mit den folgenden Eigenschaften:
      (Mikrometer)
    Ra Mittl. Rauigkeit etwa 7-14
    Rsm Mittlere Weite der Rauigkeit etwa 500-720
    Rpc Zahl der Scheitel etwa 15-20

     
    13. Handschuh-Tauchform gemäß Anspruch 12, wobei die Tauchform eine oder mehrere der folgenden Eigenschaften an den Fingerspitzenbereichen aufweist:
      (Mikrometer)
    Rz Mittlere Rauigkeitstiefe etwa 30-50
    Rmax Größte Rauigkeitstiefe etwa 40-70
    Rp Höhe des höchsten Scheitels etwa 8-22
    Rv Tiefe der tiefsten Senke etwa 16-35

     
    14. Handschuh-Tauchform gemäß einem der Ansprüche 12 und 13, wobei die Tauchform eine oder mehrere der folgenden Eigenschaften an den Fingerspitzenbereichen aufweist:
      (Mikrometer)
    Ra Mittl. Rauigkeit etwa 8-12
    Rsm Mittlere Weite der Rauigkeit etwa 610-700
    Rpc Zahl der Scheitel etwa 16-19

     
    15. Handschuh-Tauchform gemäß einem der Ansprüche 12 bis 14, wobei die Tauchform eine oder mehrere der folgenden Eigenschaften an den Fingerspitzenbereichen aufweist:
      (Mikrometer)
    Rz Mittlere Rauigkeitstiefe etwa 30-45
    Rmax Größte Rauigkeitstiefe etwa 40-65
    Rp Höhe des höchsten Scheitels etwa 10-20
    Rv Tiefe der tiefsten Senke etwa 18-30

     


    Revendications

    1. Gant trempé en latex comportant une ou plusieurs extrémités de doigts texturées, dans lequel : la texture au niveau d'une ou plusieurs extrémités des doigts est une image inverse d'une forme, utilisée dans la formation du gant, comportant une ou plusieurs surfaces sur les régions d'extrémité des doigts ayant les propriétés suivantes :
      (micromètres)
    Ra Rugosité moyenne environ 7-14
    Rsm Largeur moyenne de rugosité environ 500-720
    Rpc Densité de pics environ 15-20
    ; et
    le gant étant non chloré, le gant étant (i) un gant en nitrile formé en un seul trempage ou (ii) un gant trempé comportant une couche ainsi texturée formée de latex polymère, et ledit gant comprenant un sel d'ion métallique multivalent d'un acide organique ayant une valeur logP d'environ 4 à environ 15, le gant étant préférablement un gant en nitrile.
     
    2. Gant trempé en latex selon la revendication 1, dans lequel la forme a une ou plusieurs des propriétés suivantes au niveau des surfaces d'extrémité des doigts correspondantes :
      (micromètres)
    Ra Rugosité moyenne environ 8-12
    Rsm Largeur moyenne de rugosité environ 610-700
    Rpc Densité de pics environ 16-19

     
    3. Gant trempé en latex selon la revendication 1 ou 2, dans lequel la forme a une ou plusieurs des propriétés suivantes au niveau des surfaces d'extrémité des doigts correspondantes :
      (micromètres)
    Rz Profondeur moyenne de rugosité environ 30-50
    Rmax Profondeur maximum de rugosité environ 40-70
    Rp Hauteur du pic le plus haut environ 8-22
    Rv Profondeur du creux le plus profond environ 16-35

     
    4. Gant trempé en latex selon l'une des revendications 1 à 3, dans lequel le sel d'ion métallique multivalent d'un acide organique est un sel d'acide gras C14-C30.
     
    5. Gant trempé en latex selon l'une des revendications 1 à 4, dans lequel la force de préhension pour le rattrapage d'un barreau à l'état humide avec une charge de 1,0 kg est d'environ 0,24 kgf ou moins, optionnellement dans lequel la force de préhension pour le rattrapage d'un barreau à l'état humide à l'état humide avec une charge de 1,5 kg est d'environ 0,75 kgf ou moins.
     
    6. Procédé de formation d'un gant, comprenant :

    l'enduction d'une forme de main avec un coagulant ;

    l'application d'une formulation d'élastomère coagulable sur la forme enduite de coagulant de telle sorte que la forme soit enduite d'élastomère coagulé ; et

    le durcissement de l'enduit élastomère, dans lequel la forme comporte une ou plusieurs surfaces sur les régions d'extrémité des doigts ayant les propriétés suivantes :

      (micromètres)
    Ra Rugosité moyenne environ 7-14
    Rsm Largeur moyenne de rugosité environ 500-720
    Rpc Densité de pics environ 15-20
    et dans lequel le gant formé est (i) un gant en nitrile formé en un seul trempage ou (ii) un gant trempé comportant une couche ainsi texturée formée de latex de caoutchouc naturel ou de latex de caoutchouc, et ledit gant comportant une ou plusieurs extrémités de doigts texturées résultant de la formation du gant sur la forme, et comprenant un sel d'ion métallique multivalent d'un acide organique ayant une valeur logP d'environ 4 à environ 15.


     
    7. Procédé selon la revendication 6, dans lequel la forme a une ou plusieurs des propriétés suivantes :
      (micromètres)
    Rz Profondeur moyenne de ruqosité environ 30-50
    Rmax Profondeur maximum de rugosité environ 40-70
    Rp Hauteur du pic le plus haut environ 8-22
    Rv Profondeur du creux le plus profond environ 16-35

     
    8. Procédé selon l'une des revendications 6 ou 7, dans lequel la forme a une ou plusieurs des propriétés suivantes :
      (micromètres)
    Ra Rugosité moyenne environ 8 - 12
    Rsm Largeur moyenne de rugosité environ 610-700
    Rpc Densité de pics environ 16-19

     
    9. Procédé selon l'une des revendications 6 à 8, dans lequel l'enduit de coagulant est réalisé avec une composition comprenant un sel d'ion métallique multivalent d'un acide organique ayant une valeur logP d'environ 4 à environ 15.
     
    10. Procédé selon l'une des revendications 6 à 9, dans lequel l'acide organique est un acide gras C14-C30, optionnellement dans lequel l'acide organique est un acide gras C16-C20.
     
    11. Procédé selon l'une des revendications 9 à 10, dans lequel le sel d'ion métallique multivalent représente environ 5 à environ 50 % en poids des composés coagulants dans la composition de coagulant.
     
    12. Forme de main comportant une ou plusieurs surfaces sur les régions d'extrémité des doigts ayant les propriétés suivantes :
      (micromètres)
    Ra Rugosité moyenne environ 7-14
    Rsm Largeur moyenne de rugosité environ 500-720
    Rpc Densité de pics environ 15-20

     
    13. Forme de main selon la revendication 12, la forme ayant une ou plusieurs des propriétés suivantes au niveau desdites régions d'extrémité des doigts :
      (micromètres)
    Rz Profondeur moyenne de rugosité environ 30-50
    Rmax Profondeur maximum de rugosité environ 40-70
    Rp Hauteur du pic le plus haut environ 8-22
    Rv Profondeur du creux le plus profond environ 16-35

     
    14. Forme de main selon l'une des revendications 12 ou 13, la forme ayant une ou plusieurs des propriétés suivantes au niveau desdites régions d'extrémité des doigts :
      (micromètres)
    Ra Rugosité moyenne environ 8 - 12
    Rsm Largeur moyenne de rugosité environ 610-700
    Rpc Densité de pics environ 16-19

     
    15. Forme de main selon l'une des revendications 12 à 14, la forme ayant une ou plusieurs des propriétés suivantes au niveau desdites régions d'extrémité des doigts :
      (micromètres)
    Rz Profondeur moyenne de ruqosité environ 30-45
    Rma x Profondeur maximum de rugosité environ 40-65
    Rp Hauteur du pic le plus haut environ 10-20
    Rv Profondeur du creux le plus profond environ 18-30

     




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    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description