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WO2025144037A1 - Gants revêtus de nitrile et procédé de production des gants - Google Patents

Gants revêtus de nitrile et procédé de production des gants Download PDF

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Publication number
WO2025144037A1
WO2025144037A1 PCT/MY2023/050108 MY2023050108W WO2025144037A1 WO 2025144037 A1 WO2025144037 A1 WO 2025144037A1 MY 2023050108 W MY2023050108 W MY 2023050108W WO 2025144037 A1 WO2025144037 A1 WO 2025144037A1
Authority
WO
WIPO (PCT)
Prior art keywords
nitrile
layer
viscosity
coated
liner
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.)
Pending
Application number
PCT/MY2023/050108
Other languages
English (en)
Inventor
Yen Chiat Chew
Hean Kooi Ong
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.)
MAXI SUPPORT Sdn Bhd
Original Assignee
MAXI SUPPORT Sdn Bhd
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 MAXI SUPPORT Sdn Bhd filed Critical MAXI SUPPORT Sdn Bhd
Priority to PCT/MY2023/050108 priority Critical patent/WO2025144037A1/fr
Priority to PCT/MY2024/050085 priority patent/WO2025144039A1/fr
Publication of WO2025144037A1 publication Critical patent/WO2025144037A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/0055—Plastic or rubber gloves
    • A41D19/0058—Three-dimensional gloves
    • A41D19/0065—Three-dimensional gloves with a textile layer underneath
    • 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
    • A41D19/001—Linings
    • 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
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/015—Protective gloves
    • A41D19/01529—Protective gloves with thermal or fire protection

Definitions

  • Nitrile gloves are gaining popularity as compared to natural rubber gloves due to reduced risk of latex allergies. Further, nitrile gloves are relatively strong and resistance to most chemicals. Additionally, nitrile gloves are well-accepted in countries with strict regulations for use in dealing with fatty foods, such as, fish, chicken, or red meat. There are gloves with liners coated with nitrile compounds to widen the application. For example, Canadian Patent No. CA 2639874 C and European Patent No. EP 3369332 Bl. Further, there are nitrile gloves incorporated with textures or features such as those as disclosed in LTnited States Patent No. 7356852, LTnited States Patent No. 10349690 B2, United States Patent Application No. US 2018125132 Al and Chinese Patent No.
  • Another aspect of the present invention is to provide a glove comprising a back-hand area configured with a protective feature derived from thermoplastic rubber (TPR) and/or thermoplastic polyurethane (TPU).
  • a back-hand area refers to an area of the glove which covers the dorsal side of a hand.
  • the TPR and/or TPU protective feature is configured in strips and/or patches with foldable ridges to maintain a best possible flexibility of the gloves when in use.
  • one of the embodiments of the present invention is a nitrile coated glove comprising: a glove liner; a first layer of a nitrile compound which has been roll coated onto the liner, the first layer being formed from a coating having a first viscosity; at least one second layer of a nitrile compound coated onto the first layer, the second and any subsequent layers having a lower viscosity of nitrile compound coating than that of the first layer; and one or more friction areas formed by a plurality of nitrile granules spread on the second layer.
  • the nitrile granules are formed by acrylonitrile butadiene rubber.
  • An advantage of providing the granules by means of nitrile is to provide a glove with palm granules which is 100 % environmental, social and governance (ESG) compliant, soft, comfortable, food-safe and with excellent dexterity. Nonetheless, the granules may be made from latex or polyvinyl chloride (PVC), or a mixture thereof. Alternatively, the granules may be made from a combination of at least two of acrylonitrile butadiene rubber, latex, and PVC.
  • the granules have an average size between 10 to 60 mesh.
  • the coating will obtain the lowest possible common surface with the substrate.
  • the first nitrile layer is coated on a liner, while the second nitrile layer is coated on the first nitrile layer.
  • a nitrile compound with a suitable surface tension value is preferred.
  • the first nitrile compound has a surface tension value above 34 mN/m.
  • the second or subsequent nitrile compound has a surface tension value below or equal to 34 mN/m.
  • one of the embodiments of the present invention is a method of producing a nitrile coated glove, the method comprising the steps of: preparing a glove liner to be coated on a former; roll-coating a first nitrile compound having a first viscosity on the liner by rotating the former in a bath of the first nitrile compound to obtain a first nitrile layer on the liner; drying the roll coated first nitrile layer; coating the first nitrile layer with a second nitrile compound having a second viscosity which is different to the first viscosity to form a second nitrile layer; spreading, prior to curing of the second nitrile layer, a plurality of nitrile granules on the second nitrile layer to form one or more friction areas to enhance the gripping characteristics of the glove; drying the high friction areas; and coating the or each high friction area with a third
  • the method further comprising a step of adhering thermoplastic rubber (TPR) and/or thermoplastic urethane (TPU) at the back-hand area of the gloves.
  • TPR thermoplastic rubber
  • TPU thermoplastic urethane
  • the method further comprising a step of adjusting the viscosity of the first, second and subsequent layers of nitrile compound in respective layers by adding diluent and/or thickeners thereto.
  • the step of spreading the nitrile granules is conducted by sprinkling the granules at a predetermined area on the second nitrile layer thereby forming the friction area.
  • the nitrile compound of at least one of the first, second or any subsequent layers comprises at least one of acrylonitrile butadiene rubber, chloroprene, polyisoprene, or any combination thereof.
  • At least one of the preceding aspects is met, in whole or in part, by the present invention, in which one of the embodiments of the present invention is nitrile coated gloves produced according to the preceding description.
  • FIG. 1 shows a front-hand with friction area of an exemplary pair of gloves of the present invention.
  • a first layer 100 of a nitrile compound which has been roll coated onto the liner the first layer 100 being formed from a coating having a first viscosity
  • at least one second layer 200 of a nitrile compound coated onto the first layer 100, the second 200 and any subsequent layers 300, 400 having a lower viscosity of nitrile compound coating than that of the first layer 100
  • the method further comprising a step of forming thermoplastic rubber (TPR) and/or thermoplastic polyurethane (TPU) at the back-hand area of the gloves.
  • the method may further comprise another step of coating the third nitrile layer 300 with a fourth nitrile compound and curing thereof.
  • the step of adjusting viscosity of the first nitrile compound is conducted by adding about 2 wt% to 5 wt % of thickener therein.
  • the step of adjusting viscosity of the second and/or subsequent nitrile compound is conducted by adding about 3 wt% to 6 wt% of water and 3 to 6 wt% of thickener therein.
  • the step of spreading a plurality of nitrile granules 201 is conducted by sprinkling the granules 201 at a predetermined area on the second nitrile layer 200 thereby forming the friction areas.
  • the step of sprinkling the granules 201 can be conducted manually or automated by means of machinery.
  • the present invention provides a nitrile coated glove which includes friction areas configured with nitrile granules 201.
  • the method comprises a step of adhering thermoplastic rubber (TPR) and/or thermoplastic polyurethane (TPU) at the back-hand area of the glove.
  • TPR thermoplastic rubber
  • TPU thermoplastic polyurethane
  • the TPR are adhered on the outermost cured nitrile layer, such that the TPR can be provided on the back-hand area of the gloves.
  • the TPR are provided in strips and/or patches 500 as shown in FIG. 3 and 5.
  • the foldable ridges 501 provide space for movement of joints of a hand thereby providing flexibility in hand movement of a user.
  • Conventional way of sewing TPR on fabric gloves may not be applicable in the present invention as sewing may puncture the nitrile layers.
  • the TPR strips and/or patches 500 are adhered to the outermost layer of the glove by means of high-performance adhesives, such as high-performance polyurethane glue, or the like.
  • the method in the present invention further comprising steps of leaching the cured gloves to remove chemical remains thereof.
  • the method may further comprise steps of chlorinating the gloves using chlorine or sodium hypochlorite, followed by neutralization.
  • concentration of chlorine or sodium hypochlorite used may vary based on situation. For example, 100 to 500 ppm of chlorine or sodium hypochlorite can be used.
  • the present invention may be embodied in other specific forms without departing from its essential characteristics. The described embodiments are to be considered in all aspects only as illustrative and not restrictive. The scope of the invention is therefore indicated by the appended claims rather than by the foregoing description. All changes, which come within the meaning and range of equivalency of the claims, are to be embraced within their scope.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gloves (AREA)

Abstract

La présente invention concerne un gant revêtu de nitrile et son procédé de production. Le gant comprend : un revêtement de gant ; une première couche d'un composé nitrile qui a été enduite au rouleau sur le revêtement, la première couche étant formée à partir d'un revêtement ayant une première viscosité ; au moins une seconde couche d'un composé nitrile revêtu sur la première couche, la seconde et toute couche suivante ayant une viscosité de revêtement de composé nitrile inférieure à celle de la première couche ; et une ou plusieurs zones de frottement formées par une pluralité de granules de nitrile répartis sur la seconde couche.
PCT/MY2023/050108 2023-12-28 2023-12-28 Gants revêtus de nitrile et procédé de production des gants Pending WO2025144037A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/MY2023/050108 WO2025144037A1 (fr) 2023-12-28 2023-12-28 Gants revêtus de nitrile et procédé de production des gants
PCT/MY2024/050085 WO2025144039A1 (fr) 2023-12-28 2024-11-12 Gants polyvalents et procédé de production des gants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/MY2023/050108 WO2025144037A1 (fr) 2023-12-28 2023-12-28 Gants revêtus de nitrile et procédé de production des gants

Publications (1)

Publication Number Publication Date
WO2025144037A1 true WO2025144037A1 (fr) 2025-07-03

Family

ID=89834350

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/MY2023/050108 Pending WO2025144037A1 (fr) 2023-12-28 2023-12-28 Gants revêtus de nitrile et procédé de production des gants
PCT/MY2024/050085 Pending WO2025144039A1 (fr) 2023-12-28 2024-11-12 Gants polyvalents et procédé de production des gants

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/MY2024/050085 Pending WO2025144039A1 (fr) 2023-12-28 2024-11-12 Gants polyvalents et procédé de production des gants

Country Status (1)

Country Link
WO (2) WO2025144037A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7356852B2 (en) 2004-08-25 2008-04-15 Supermax, Inc. Latex glove with textured outer surface
CA2639874C (fr) 2006-03-10 2014-05-13 Kimberly-Clark Worldwide, Inc. Article en caoutchouc nitrile ayant un revetement exterieur et ayant les caracteristiques du caoutchouc naturel
US20180125132A1 (en) 2016-11-08 2018-05-10 Top Glove International Sdn Bhd Patterned gloves for enhanced grip
US10349690B2 (en) 2013-11-25 2019-07-16 Ansell Limited Supported glove having grip features
EP3369332B1 (fr) 2017-03-03 2019-10-09 Showa Glove Co. Gant
CN108433220B (zh) 2018-04-28 2020-07-03 山东星宇手套有限公司 一种丁腈颗粒防滑手套的制备方法
CN112779790A (zh) * 2020-12-25 2021-05-11 徐州富山医疗制品有限公司 一种丁腈颗粒防滑手套的制备方法
US20210161226A1 (en) * 2015-12-31 2021-06-03 Ringers Technologies Llc Safety glove including chemical resistance and impact protection and method of manufacturing the same
US20210330004A1 (en) * 2020-04-24 2021-10-28 Honeywell International Inc. Layered coating for fabrics

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016141408A1 (fr) 2015-03-10 2016-09-15 Ansell Limited Gant pourvu d'une base et d'un revêtement de nitrile résistant à l'abrasion
WO2017031522A1 (fr) 2015-08-25 2017-03-02 Ansell Limited Gants présentant des renforts et des éléments d'impact
US11229248B2 (en) * 2015-12-02 2022-01-25 Showa Glove Co. Supporting glove and method for manufacturing the supporting glove
WO2018145145A2 (fr) 2017-02-09 2018-08-16 Ansell Limited Gant supporté à revêtement mince
US12102147B2 (en) * 2018-10-19 2024-10-01 Ringers Technologies Llc Liquid proof gloves having impact protection

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7356852B2 (en) 2004-08-25 2008-04-15 Supermax, Inc. Latex glove with textured outer surface
CA2639874C (fr) 2006-03-10 2014-05-13 Kimberly-Clark Worldwide, Inc. Article en caoutchouc nitrile ayant un revetement exterieur et ayant les caracteristiques du caoutchouc naturel
US10349690B2 (en) 2013-11-25 2019-07-16 Ansell Limited Supported glove having grip features
US20210161226A1 (en) * 2015-12-31 2021-06-03 Ringers Technologies Llc Safety glove including chemical resistance and impact protection and method of manufacturing the same
US20180125132A1 (en) 2016-11-08 2018-05-10 Top Glove International Sdn Bhd Patterned gloves for enhanced grip
EP3369332B1 (fr) 2017-03-03 2019-10-09 Showa Glove Co. Gant
CN108433220B (zh) 2018-04-28 2020-07-03 山东星宇手套有限公司 一种丁腈颗粒防滑手套的制备方法
US20210330004A1 (en) * 2020-04-24 2021-10-28 Honeywell International Inc. Layered coating for fabrics
CN112779790A (zh) * 2020-12-25 2021-05-11 徐州富山医疗制品有限公司 一种丁腈颗粒防滑手套的制备方法

Also Published As

Publication number Publication date
WO2025144039A1 (fr) 2025-07-03

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