EP4129103A1 - Gleitschutzstruktur für artikeloberfläche, artikel, gleitschutzkörper und handschuhe mit gleitschutzbeschichtung und verfahren zur herstellung von handschuhen - Google Patents
Gleitschutzstruktur für artikeloberfläche, artikel, gleitschutzkörper und handschuhe mit gleitschutzbeschichtung und verfahren zur herstellung von handschuhen Download PDFInfo
- Publication number
- EP4129103A1 EP4129103A1 EP21776959.5A EP21776959A EP4129103A1 EP 4129103 A1 EP4129103 A1 EP 4129103A1 EP 21776959 A EP21776959 A EP 21776959A EP 4129103 A1 EP4129103 A1 EP 4129103A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recessed portions
- article
- gloves
- coating film
- film layer
- 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.)
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/015—Protective gloves
- A41D19/01547—Protective gloves with grip improving means
- A41D19/01558—Protective gloves with grip improving means using a layer of grip improving material
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2400/00—Functions or special features of garments
- A41D2400/80—Friction or grip reinforcement
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/50—Synthetic resins or rubbers
- A41D2500/54—Synthetic resins or rubbers in coated form
Definitions
- the present invention relates to an anti-slipping structure for a surface of an article, an article provided with coating film layer imparting an anti-slipping effect, an anti-slipping body, gloves, a method for forming coating film layer, and a method for manufacturing gloves.
- gloves that are coated with a coating film layer made of an elastic material such as natural rubber, synthetic rubber, polyvinyl chloride, polyurethane have been popularly used. This is because such gloves exhibit excellent functions such as high waterproof property, high oil resistant property and high chemical resistant property while maintaining flexibility.
- an elastic material such as natural rubber, synthetic rubber, polyvinyl chloride, polyurethane
- a friction force that acts between the glove and a grasping article can be increased and hence, operability of a user in a state where the user wears the gloves can be enhanced.
- Patent Literature 1 Japanese Patent Laid-Open No. 2008-274521
- the conventional gloves formed by the above-mentioned powder adhesion method have a drawback that small dust is likely to be filled in the fine recessed portions formed on the surface of the coating film layer.
- gloves formed by a powder adhesion method are gloves having excellent operability, there has been a demand for gloves having a larger friction force.
- the inventors of the present invention have made extensive studies so as to develop gloves where dust is minimally filled in recessed portions and a larger friction force can be generated compared to gloves that are obtained by a powder adhesion method.
- the inventors cast off the conventional technical concept that requires powdery body as an indispensable constituent for forming recessed portions, and have found a novel method that can overcome such problems of the conventional method by making use of a property of a liquid, and also have found that the novel method is not only applicable to surfaces of gloves simply but also applicable to the prevention of a slippage relating to articles in a broad range.
- the present invention has been made based on such finding. Solution to Problem
- an anti-slipping structure for an article surface that includes, on a surface of a coating film layer that covers a surface of an article, a plurality of hemispherical recessed portions each having an approximately circular shape as viewed in a plan view, and a plurality of diaphragm provided recessed portions formed such that two or more hemispherical recessed portions are connected to each other in a partially overlapping manner and a connection boundary between the recessed portions is partitioned by a diaphragm.
- an article having a coating film layer which covers a surface of an article and on which a plurality of recessed portions are formed for imparting an anti-slipping effect to the article, wherein the plurality of recessed portions are formed of: a plurality of hemispherical recessed portions having an approximately circular shape as viewed in a plan view; and a plurality of diaphragm provided recessed portions formed such that two or more hemispherical recessed portions are connected to each other in a partially overlapping manner and a connection boundary between the recessed portions is partitioned by a diaphragm.
- an anti-slipping body wherein the anti-slipping body is the article described in the configuration (2), and is disposed on other articles so as to impart an anti-slipping effect to the other articles.
- gloves where a plurality of recessed portions are formed on a coating film layer that covers surfaces of the gloves, wherein the plurality of recessed portions are formed of: a plurality of hemispherical recessed portions having an approximately circular shape as viewed in a plan view; and a plurality of diaphragm provided recessed portions formed such that two or more hemispherical recessed portions are connected to each other in a partially overlapping manner and a connection boundary between the recessed portions is partitioned by a diaphragm.
- a method for forming a coating film layer which covers a surface of an article and on which a plurality of recessed portions are formed so as to impart an anti-slipping effect to the article wherein a liquid droplet of a solidifying agent is made to impinge on an unsolidified elastic material that adheres to the surface of the article so as to recess and solidify impinged portions thus forming the recessed portions.
- the article in the method for forming a coating film layer, is an anti-slipping body that imparts an anti-slipping effect to other articles by being disposed on the other articles.
- a method for manufacturing gloves where a plurality of recessed portions are formed on a coating film layer that covers surfaces of the gloves, wherein a liquid droplet of a solidifying agent is made to impinge on an unsolidified elastic material that adheres to the surface of an unfinished article formed in a profile of fingers so as to recess and solidify impinged portions thus forming the recessed portions.
- the anti-slipping structure includes, on the surface of the coating film layer that covers the surface of the article, the plurality of hemispherical recessed portions each having an approximately circular shape as viewed in a plan view, and the plurality of diaphragm provided recessed portions formed such that two or more hemispherical recessed portions are connected to each other in a partially overlapping manner and the connection boundary between the recessed portions is partitioned by a diaphragm.
- the article of the present invention having the coating film layer that imparts an anti-slipping effect
- the article is the article that includes the coating film layer which covers a surface of the article on which the plurality of recessed portions are formed so as to impart an anti-slipping effect to the article
- the plurality of recessed portions are formed of: the plurality of hemispherical recessed portions having an approximately circular shape as viewed in a plan view; and the plurality of diaphragm provided recessed portions formed such that two or more hemispherical recessed portions are connected to each other in a partially overlapping manner and the connection boundary between the recessed portions is partitioned by the diaphragm.
- the article described above is formed of the anti-slipping body that is disposed on other articles so as to impart an anti-slipping effect to the other articles, it is possible to easily impart an excellent anti-slipping effect to various objects that are desirable to be imparted with an anti-slipping effect such as a chair, a table, a floor surface, treads of a stair and a handrail, for example.
- gloves where a plurality of recessed portions are formed on a coating film layer that covers surfaces of the gloves, wherein the plurality of recessed portions are formed of: a plurality of hemispherical recessed portions having an approximately circular shape as viewed in a plan view; and a plurality of diaphragm provided recessed portions formed such that two or more hemispherical recessed portions are connected to each other in a partially overlapping manner and a connection boundary between the recessed portions is partitioned by a diaphragm.
- a liquid droplet of a solidifying agent is made to impinge on an unsolidified elastic material that adheres to the surface of the article so as to recess and solidify the impinged portions thus forming the recessed portions.
- the article is an anti-slipping body that imparts an anti-slipping effect to other articles by being disposed on the other articles, it is possible to easily impart an excellent anti-slipping effect to various objects that are desirable to be imparted with an anti-slipping effect.
- the method for manufacturing gloves of the present invention where the plurality of recessed portions are formed on the coating film layer that covers the surfaces of the gloves, wherein a liquid droplet of a solidifying agent is made to impinge on an unsolidified elastic material that adheres to the surface of the unfinished article formed in the profile of the fingers so as to recess and solidify impinged portions thus forming the recessed portions.
- anisotropy is imparted to the recessed portions by applying a tension to the elastic material, it is possible to easily remove dust that enters the recessed portion, it is also possible to impart anisotropy to a generated friction force.
- the present invention relates to an anti-slipping structure for an article surface, and an article an anti-slipping body, and gloves having a coating film layer that imparts an anti-slipping effect, wherein a plurality of recessed portions are formed on the coating film layer that covers a surface of the article.
- the present provides the gloves where dust is minimally filled in the recessed portions and a larger friction force can be generated compared to gloves obtained by a powder adhesion method.
- the present invention relates to an article that includes a coating film layer that imparts an anti-slipping effect. Further, the present invention also proposes an anti-slipping structure that is formed on a surface of the article, a structure where one specific mode of the article is a so-called anti-slipping body itself, and a structure where a specific one mode of the article is gloves.
- the article is not particularly limited provided that the anti-slipping structure according to the embodiment can be formed.
- the description will be made by focusing on gloves as one mode of the article.
- the article is an article that satisfies the above-mentioned condition, and the article includes, various articles, for example, socks, slippers, shoes, mats, and a chair, a table, a floor surface, treads of a stair, a handrail as described above.
- the anti-slipping body has configuration that can be disposed on articles that are desirable to be imparted with an anti-slipping effect.
- the anti-slipping body may take a mode such as an adhesive tape or a tacky adhesive pad, or may be formed in a plate shape so that the anti-slipping body can be fixed by bolts or the like, or may take a mode where the anti-slipping mode does not an adhering or fixing means and is only disposed.
- the anti-slipping structure according to the present embodiment is the structure for anti-slipping that is commonly used by the article, the anti-slipping body, the gloves and the like according to the present embodiment, and is one large technical feature of the present invention.
- the specific technical features of the anti-slipping structure are described hereinafter with respect to the case where the object on which the anti-slipping structure or the object on which the anti-slipping body is disposed is gloves. Accordingly, the specific technical features are described together with the description of such a case.
- the gloves according to the present invention are formed such that a plurality of recessed portions are formed on the coating film layer that covers the surface. With such a configuration, compared to glove that are obtained by a powder adhesion method, dust is minimally filled in the recessed portions and, further, a larger friction force can be generated.
- the gloves according to the present embodiment may be unsupported-type gloves where a glove base body is not used and a coating film layer is formed on a surface of a resin film, or may be supported-type gloves that use a glove base body and a coating film layer is formed on a surface of the glove base body directly or by way of a predetermined resin film.
- a semi-finished article that is an object on which a coating film layer that covers a surface of the gloves may be either a type of semifinished article that does not use a glove base body or a type of semi-finished article that uses a glove base body.
- a semi-finished article it is possible to provide gloves according to the present embodiment on which an anti-slipping structure that includes a plurality of recessed portions on the coating film layer on the surface of the semifinished article is formed.
- the recessed portions on the surface of the gloves may be formed on the entire surface of the resin film or may be partially formed on the surface of the resin film.
- the semifinished article means a semifinished article that is in a process of forming the gloves according to the embodiment.
- the semifinished article does not mean an article that is used in a case where the gloves according to the present embodiment is used as a semifinished article in a manufacturing process of a secondary processed article that uses the gloves according to the embodiment as a semifinished article.
- the present invention may include such a case.
- the glove base body for example, gloves that are formed using a knitted fabric or a woven fabric can be named.
- the raw material of the glove base body is not particularly limited, and the following various raw materials can be used.
- natural fibers cotton, silk floss, hemp, wool and the like are named.
- synthetic fibers nylon, vinyl, polyvinyliden chloride, polyvinyl dichloride, polyester, polyurethane, rayon, cuprammonium rayon, acetate, acryl, polypropylene, polyethylene, fluorocarbon fibers, polychlal fibers, aramid fibers, cellulose, glass fibers and the like are named.
- a material for forming a coating film layer that covers a surface of gloves according to the present embodiment contains a solidifying agent that changes the elastic material from an unsolidified state to a solidified state.
- the solidifying agent can be prepared as a solution. Further, it is sufficient for the solidifying agent that the elastic material is speedily solidified to an extent that impingement traces remain at contact portions when an unsolidified elastic material comes into contact (impingement) with a liquid droplet of the solidifying liquid.
- an elastic material used in general for forming a film by a solidification method for example, natural rubber, synthetic rubber, (for example, acrylonitrile butadiene rubber (NBR), polyurethane and the like are named.
- the solidification method is a method that forms a resin composition into a gel form by salt solidification, solidification by an acid, or solidification by an organic solvent.
- a resin composition which is an object to be solidified is natural rubber or synthetic rubber, as a solidification agent for solidifying such resin composition using by salt solidification, for example, a methanol solution in which metal salt such as calcium nitride, calcium chloride is dissolved, or aquas solution can be used.
- a solidification agent for solidifying such resin composition using by salt solidification for example, a methanol solution in which metal salt such as calcium nitride, calcium chloride is dissolved, or aquas solution can be used.
- an acid that forms a solidification agent for solidifying by an acid an organic acid such as an acetic acid or citrate can be used.
- the solidification can be performed by performing either one of solidification using metal salt or solidification using an acid in a single form, both solidifications can be used in combination.
- the resin composition that is an object to be solidified is polyurethan
- a solidification agent for solidifying polyurethan by solidification using an organic solvent for example, an organic solvent such as a heptane can be used.
- a thickness of the coating film layer is preferably 0.05 to 2mm. There is a tendency that the thicker the resin film, the harder the portion becomes.
- the thinner a thickness of the coating film layer the larger the flexibility of the coating film layer becomes and hence, fitting property or property that the coating film layer suits a hand can be improved.
- a strength of the gloves is lowered and hence, when the gloves are used for a heavy work, it is necessary for the coating film layer to have a certain amount of thickness.
- a surface portion and recessed portions of the coating film layer become smooth.
- a depth of the recessed portion with respect to a diameter of an opening of the recessed portion is shallow and hence, a strength of the coating film layer when the coating film layer is formed with the substantially same thickness is increased compared to the gloves formed by a powder adhesion method.
- the coating film layer fairly differs in softness and texture also depending on a raw material. For example, even when the coating film layer has the same thickness, there is a tendency that the coating film layer made of a low modulus raw material such as natural rubber or a soft polyvinyl chloride is soft, and the coating film layer made of high modulus raw material such as nitrile rubber becomes hard.
- a low modulus raw material such as natural rubber or a soft polyvinyl chloride
- high modulus raw material such as nitrile rubber becomes hard.
- a plurality of recessed portions of the anti-slipping structure according to the present embodiment formed on the coating film layer includes: hemispherical recessed portions having an approximately circular shape as viewed in a plan view; and diaphragm provided recessed portions where two or more hemispherical recessed portions are connected to each other in a partially overlapping manner, and a bonding boundary between the hemispherical recessed portions is partitioned by a diaphragm wall.
- hemispherical shape is not always limited to an accurately hemispherical shape, and also includes a recessed portion that is slightly shallower than a hemispherical shape, and a recessed portion having an elliptical shape as viewed in a plan view.
- approximately circular shape that expresses the shape as viewed in a plan view is also not limited to an accurate circle. That is, it is sufficient that a most portion of an opening edge of the recessed portion having an annular shape is protruding outward at an opening edge, and forms a substantially continuous curve. For example, in Fig.
- the recessed portion indicated by a black flame is a hemispherical recessed portion.
- the recessed portion indicated by the black frame exemplifies a portion of the hemispherical recessed portion illustrated in Fig. 1(a) . That is, it must be noted that it is not always the case that only the recessed portions indicated by the black frame exhibit all hemispherical recessed portion, and some hemispherical recessed portions that are not indicated by the black frame exist together with the recessed portions that do not form the hemispherical recessed portions.
- the diaphragm provided recessed portion is a recessed portion having the structure where two or more hemispherical recessed portions are connected with each other in a partially overlapping manner, and the bonding boundary is partitioned by the diaphragm wall.
- a liquid droplet of a solidification solution impinges on an area extremely close to the hemispherical recessed portion that is already formed so that a new hemispherical recessed portion is formed in such a manner that a portion of the previously formed hemispherical recessed portion is eroded.
- the diaphragm provided recessed portion is formed of the eroded recessed portion derived from the previously formed hemispherical recessed portion and the hemispherical recessed portion.
- an elastic material whose thicknesses increased in an offset manner by an impingement of the solidification liquid when the above-mentioned new hemispherical recessed portion is formed forms the diaphragm wall that is bent in a convex shape toward the inside in the previous semispherical recessed portion.
- this diaphragm wall is thinner than a wall around the hemispherical recessed portion formed independently. It is considered that the diaphragm wall plays a role of increasing a friction force by entangling with an object to be gripped.
- a recessed portion formed by a powder adhesion method is derived from a particle embedded in a coating film layer and hence, an overhang portion is formed by an inner space having a diameter larger than a diameter of an opening of the recessed portion.
- a wall having an overhung shape that is formed between two recessed portions is fragile or weak because the wall has a portion having a thin wall thickness ranging from a surface layer to a deep portion of the coating film layer and hence, the portion of the wall falls by friction so that the generation of dust is promoted.
- the coating film layer decreases an effect of sucking an object to be gripped like suction cups (a so-called suction cup effect). Accordingly, because of a rough surface shape where a base line is not determined as illustrated in Fig. 2(a) , a leakage of air is likely to occur and hence, it is difficult to maintain a sufficient negative pressure in the recessed portion.
- the recessed portion of the gloves according to the present embodiment does not have an overhung portion in most cases as illustrated in Fig. 3 , that is, a cross-sectional view. Accordingly, even when dust or worn-out debris of the coating film layer enters the recessed portion, the dust or the debris can be easily removed and hence, it is possible to prevent the recessed portion from being filled with the dust or the debris. It is not always the case where a group of recessed portions that form the anti-slipping structure of the gloves according to the present embodiment exclude the recessed portions having the overhung structure in the strict meaning of the term. That is, the presence of the recessed portions having the overhung structure is allowed more or less to an extent that the superiority of the above-mentioned advantageous effects against the conventional products is not impaired.
- the wall formed between two hemispherical recessed portions has a gentle mountain-like shape and also has a shape having a large wall thickness, that is, a shape having a large wall thickness and minimally generating the concentration of a stress. Accordingly, the generation of dust such as a lump of a portion of the coating film layer that falls is hardly promoted.
- the wall having a gentle mounting-like shape has appropriate flexibility.
- the wall has the structure where a base surface (base line) that corresponds to a surface before the recessed portions are formed is relatively clear and portions other than the recessed portions are relatively flat and smooth. Accordingly, a leakage of air is small and hence, a negative pressure in the recessed portion can be sufficiently maintained whereby a suction cup effect can be effectively generated.
- the structure of the gloves according to the present invention is the anti-slipping surface structure of the gloves where, while forming the main body by the flat smooth wall structure having a large wall thickness that is formed between a curved surface that forms a side wall of one flat smooth recessed portion having a hemispherical shape or a hemi-elliptical shape and a curved surface that forms a side wall of the other flat smooth recessed portion disposed adjacently to the former flat smooth recessed portion, portions also exist where the other ellipse is formed on one ellipse in an overlapping manner (one ellipse being formed by erosion by the other ellipse) so that a portion where a thin wall thinner than the flat smooth wall having the above-mentioned wall thickness in the above-mentioned one ellipse exists.
- the structure of the gloves according to the present invention is the anti-slipping surface structure of the gloves where, while forming the main body by the flat smooth wall structure having a large wall thickness that is formed between a curved surface that forms an inner wall of one ellipse and a curved surface that forms an inner wall of the other ellipse disposed adjacently to the one ellipse, portions also exist where the other ellipse is formed on one ellipse in an overlapping manner (one ellipse being formed by erosion by the other ellipse) so that a thin wall that is thinner than the flat smooth wall having the above-mentioned wall thickness in the above-mentioned one ellipse.
- a method for manufacturing gloves having such technical features is also provided. More specifically, in a method for manufacturing gloves where a plurality of recessed portions are formed on a coating film layer that covers surfaces of the gloves, a liquid droplet of a solidifying agent is made to impinge on an unsolidified elastic material that adheres to the surface of an unfinished article formed in a profile of fingers so as to recess and solidify impinged portions thus forming the recessed portions.
- the semifinished article may be a resin film formed in a shape of a profile of fingers without using a glove base body.
- a glove base body formed using a knitted fabric or a woven fabric, or a glove base body having a surface on which a resin film is formed may be also used as the semifinished article.
- the semifinished article may have the shape of a mitten or the like, or may be formed such that some fingers are exposed from the semifinished article.
- an unsolidified elastic material is made to adhere to the surface of such a semifinished article.
- the adhesion of the elastic material may be performed by applying an elastic material to the semifinished article by coating, or by immersing the semifinished article into the elastic material.
- Liquid droplets of a solidifying agent that is an elastic material is made to impinge on the elastic material that adheres to the semifinished article.
- the impingement of the liquid droplets may be performed using a spray of the like
- a method of generating the impingement of the liquid droplets is not particularly limited provided that kinetic energy can be imparted to the liquid droplets to an extent that recesses can be formed on the surface of the elastic material when the liquid droplets impinge on the elastic material.
- the hemispherical recessed portions and the diaphragm provided recessed portions are formed on a surface of the elastic material.
- gloves are manufactured by solidifying the elastic material on which such recessed portions are formed to a deep portion when necessary.
- a compounding agent may be added to the elastic material when necessary.
- a stabilizer a cross-linking agent, a cross-linked dispersion agent, an anti-aging agent, a thickener, a plasticizer, an antifoaming agent and the like can be used. Amounts of these compounding agents can be suitably adjusted depending on a usage of gloves.
- a cross-linked dispersion agent can be obtained by dispersing, besides a cross-linking agent such as sulfur or peroxide, a solid material such as a cross-linking promoter such as BT, TT, CZ, PZ, a cross-linking promoting aid such as zinc oxide or an anti-aging agent into water.
- the cross-linking dispersion agent is mainly used when a resin composition is a rubber latex. With the use of the cross-linking agent, rubber molecules are bonded to each other in a mesh shape so that physical property such as a strength of the resin film can be increased.
- anisotropy may be imparted to the recessed portions formed by imparting a tension to the elastic material.
- the recessed portions are formed, by imparting a tension in a predetermined direction among plane directions to the elastic material before the elastic material is completely solidified, for example, the respective recessed portions of a group of recessed portions formed in a circular shape can be deformed in an elliptical shape having a major axis oriented in the respective predetermined directions thus imparting anisotropy.
- the directions of major axes of the group of recessed portions deformed in an elliptical shape are also referred to as orientation directions.
- an opening diameter of the recessed portion for example, an opening diameter of the hemispherical recessed portion is not particularly limited.
- the opening diameter can be set to 0.5 mm or less, further, approximately 0.01 to 0.5 mm, and more preferably approximately 0.05 to 0.25 mm.
- the gloves according to the present embodiment can be manufactured through the following steps in general when the gloves are of a support type, for example.
- the gloves of an unsupported type are manufactured by substantially the same manufacturing method as gloves of a support type and hence, description of the method for manufacturing the gloves of an unsupported type is omitted. Further, flocking may be applied to the inside of the gloves.
- bubbles may be contained in the coating film layer of the gloves according to the present embodiment.
- the term "bubbles” is used with also a meaning that the bubbles indicate portions that contain a gas in a liquid body or solid body, and portions formed into recessed portions where a portion or most portion of the bubble opens on a surface of the solid body so that the recessed portions do not contain a gas, for example, traces after foam breaking.
- a method that allows an elastic material that is a material for forming the coating film layer to contain bubbles is maned.
- a method that allows the elastic material to contain bubbles for example, a method that uses mechanical foaming or a method that uses chemical foaming can be named.
- an elastic material in an unsolidified state is stirred by a stirrer such as a mixer thus allowing the elastic material to contain bubbles.
- a foaming agent is added to an elastic material in an unsolidified state, and the foaming agent is formed into bubbles by applying heat to the foaming agent at the time of molding gloves thus allowing the elastic material to contain bubbles.
- the foaming agent is a chemical that is also used in the manufacture of a sponge product.
- the foaming agent is decomposed when heat is applied to the foaming agent, and generates gasses such as a carbon dioxide gas, a nitrogen gas, and ammonia thus forming the bubble structure.
- gasses such as a carbon dioxide gas, a nitrogen gas, and ammonia thus forming the bubble structure.
- an inorganic foaming agent such as soda or ammonium carbonate or an organic foaming agent such as a nitroso compound, an azo compound, or a sulfonyl hydrazide can be named.
- bubbles can be easily uniformly or approximately uniformly dispersed in the elastic material.
- bubbles contained in the coating film layer obtained by solidification of the elastic material can be also uniformly or approximately uniformly dispersed.
- An amount of bubbles contained in the coating film layer may preferably be 5 to 30 vol% with respect to a unit volume of the coating film layer.
- an amount of bubbles is less than 5 vol%, a sufficient anti-slipping effect cannot be obtained and hence, such amount of babbles is not preferable.
- an amount of bubbles exceeds 30 vol%. although an anti-slipping effect and flexibility are sufficient, wear resistance is deteriorated so that durability is lowered. Accordingly, an amount of bubbles exceeding 30 vol% is not preferable.
- the resin film that does not contain bubbles By providing the resin film that does not contain bubbles, a strength of gloves can be enhanced.
- the resin film that does not contain bubbles can be formed by using the same material as the elastic material that formed the coating film layer. From a viewpoint of an adhesion property, such usage is preferable.
- a resin film that functions as an infiltration prevention film and does not contain bubbles can be omitted.
- the gloves and the method for manufacturing gloves according to the present embodiment include the above-mentioned configurations.
- these configurations are not always configurations that are limited to the gloves, and are applicable to various articles.
- the gloves and the method for manufacturing the gloves according to the present embodiment are mainly described with reference to an actual manufacturing example.
- the gloves of a support type that do not contain bubbles in the coating film layer are described as an example.
- the present invention also includes the gloves that contain bubbles in the coating film layer as described above, and the gloves of an unsupported type.
- a hand mold was covered with a knitted glove base body.
- the hand mold covered with the glove base body was immersed into an immersion vessel willed with a solidifying agent (3 weight % of calcium nitrate methanol solution) and, thereafter, the mold is pulled out and was dried.
- a solidifying agent (3 weight % of calcium nitrate methanol solution)
- the hand mold was immersed in an immersion vessel filled with a natural rubber blended liquid, and thereafter, the hand mold was pulled out, and was dried at a temperature of 70°C for 30 minutes. Accordingly, a semifinished article where an infiltration prevention film formed by a natural rubber blended liquid is formed on a surface of the glove base body was formed.
- the above-hand mold on which the semifinished article provided with the infiltration prevention film is again immersed in the immersion vessel filled with the natural rubber blended liquid.
- a sprayer on which a spray nozzle is mounted a solidifying agent is sprayed at a pressure of 0.1 to 1.0 MPa to the hand mold at a position spaced apart from the hand mold by 10 to 30 cm so as to impinge liquid droplet of the solidifying agent to the hand mold.
- the spray nozzle is not particularly limited, and a commercially available spray nozzle can be suitably adopted.
- a hollow conical nozzle No.
- the above-mentioned values exemplify one example and are not particularly limited. In short, it is sufficient that when liquid droplets of a solidifying liquid reach a surface of an elastic material adhering to the semifinished article, recessed portions can be formed by an impact of the liquid droplets. It is needless to say that such pressure and distance respectively differ depending on the configuration of the device or the like used for performing the above-mentioned operation. It is not difficult to find out these values, and can be determined by adopting conditions for forming recessed portions by observing several samples which differ in pressure and distance using a microscope or the like.
- the formation of such a coating film layer can be realized by allowing a natural rubber blended liquid to contain bubbles as an unsolidified elastic material that is made to adhere to the semifinished article.
- the natural rubber blended liquid was stirred by a mixer thus performing mechanical foaming. Stirring can be performed until a volume rate of bubbles occupying in the entire natural rubber blended liquid becomes 5 to 30 vol%, as an example, approximately 20vol%. In this case, stirring is continuously performed until the volume of the natural rubber blended liquid of 100 mL contains bubbles exceeds 120 ml.
- the gloves according to the present embodiment was obtained.
- a surface of the obtained gloves was observed by a microscope.
- a large number of (a plurality of) recessed portions are formed on the surface of the coating film layer, and the plurality of recessed portions include a large number of hemispherical recessed portions indicated by a block frame in Fig. 1(a) and a large number of diaphragm provided recessed portions indicated by a broken line frame in Fig. 1(b) .
- the respective recessed portions in portions where a tension is applied to the gloves before the coating film layer is completely solidified are deformed into an elliptical shape, and a major axis of the elliptical shape is substantially directed in a fixed direction thus exhibiting anisotropy.
- a test was performed so as to confirm that the recessed portions are minimally filled with dust and dust can be easily removed from the recessed portions. Specifically, a comparison specimen having a size of 5 cm ⁇ 5 cm that was cut out from a palm portion of the glove manufactured by a powder adhesion method and a specimen obtained in the same manner from the glove according to the present invention are used.
- the specimen was made to adhere to an upper surface of a desk in a state where the coating film layer is directed upward, soil was rubbed against the coating film layer 10 times, a weight of coating film layer was measured except for surplus soil on the coating film layer, and an amount of dust filled in the recessed portion was obtained by obtaining the difference between the specimen on which the soil was not rubbed and a weight of the specimen before rubbing was performed.
- the recessed portion was filled with 0.046 g of dust in average per 25 cm 2 by rubbing of soil.
- am amount of dust filled in the recessed portion can be suppressed to 0.009 g in average per 25 cm 2 . That is, an amount of dust generated in the present invention can be suppressed to approximately 1/5 of an amount of dust generated in the powder adhesion method.
- Gloves served in the test are four kinds of gloves consisting of gloves having no recessed portions (gloves P), gloves manufactured by the powder adhesion method (gloves Q), (isotropic) gloves according to the present embodiment where no anisotropy was applied to the recessed portion (gloves R), and gloves according to the present embodiment where anisotropy was applied to the recessed portion (gloves S).
- the test was performed such that a palm portion of each glove on which the coating film layer is formed was cut out by a size of a width of 5.5cm and a length of 7.5 cm, the cut-out specimen was laminated to a surface of a plate that was fixed at a raised angle of 45 degrees, a flat-shaped metal circular columnar body having a weight of 23 g, and having a height of 0.6cm and a diameter of 3.0cm was placed on a surface of each specimen in a state where a bottom surface of the metal circular columnar body opposedly faces the surface of each specimen, and friction performance in a dry state was confirmed by measuring time until the circular columnar body slides down along the surface of the specimen.
- the time that the circular columnar body slid down on the surface of the glove R to which anisotropy is not applied is 48.78 seconds that largely exceeds the corresponding times in the case of the glove P and the glove Q. Accordingly, the glove R exhibited an extremely excellent friction performance.
- the time that the circular columnar body slid down along the surface of the glove S to which anisotropy was imparted was 45.39 seconds in case of the glove S1 where the inclination direction is oriented in the gradient direction, and is 51.46 seconds in the case of the glove S2 where the inclination direction is directed in the direction orthogonal to the gradient direction. Accordingly, it was confirmed that anisotropy appeared in the friction performance.
- the glove according to the present embodiment is the glove that can generate a larger friction force under a dry condition.
- Gloves served in the test are, in the same manner as the above-mentioned [4. Test for confirming friction performance in dry state], four kinds of gloves consisting of gloves having no recessed portions (gloves P), gloves manufactured by the powder adhesion method (gloves Q), (isotropic) gloves according to the present embodiment where no anisotropy was applied to the recessed portion (gloves R), and gloves according to the present embodiment where anisotropy was applied to the recessed portion (gloves S) .
- the test was performed such that a palm portion of each glove on which the coating film layer is formed was cut out by a size of a width of 5.5 cm and a length of 7.5 cm, the cut-out specimen was laminated to a surface of a plate and was disposed at a fixed raised angle of 45 degrees. The surface of the specimen was made wet by spraying so that the specimen was brought into a wet state.
- the time that the ice cubicle slid down along the surface of the glove P on which recessed portions are not formed was 0.165 seconds
- the time that the ice cubicle slid down the surface of the glove Q formed by a powder adhesion method was 0.204 seconds.
- the gloves Q on which the recessed portions are formed by the powder adhesion method is superior with respect to friction performance in a wet state.
- the gloves according to the present embodiment are gloves that have extremely excellent wear performance also in a wet state compared to the gloves obtained by a powder adhesion method.
- the ice cubicle did not slide down even at an angle that exceed 90 degrees and hence, it was considered that the above-described suction cup effect is generated between the coating film layer and the ice cubicle. Still further, the inventors increased the weight of the ice cubicle and confirmed a maximum angle by which the ice cubicle can be held with respect to the gloves R, the gloves S1, and the gloves S2.
- the gloves R could hold the ice cubicles by 53 degrees
- the gloves S1 could hold the ice cubicle by 48 degrees
- the gloves S2 could hold the ice cubicle by 57 degrees. Accordingly, it was confirmed anisotropy appeared in friction performance.
- the gloves according to the present embodiment are gloves that can generate a larger friction force even under a wet condition compared to the glove obtained by a powder adhesion method.
- the article is an article that includes the coating film layer which covers the surface of the article and on which the plurality of recessed portions are formed so as to impart an anti-slipping effect, and the plurality of recessed portions are formed of: the plurality of hemispherical recessed portions having an approximately circular shape as viewed in a plan view; and the plurality of diaphragm provided recessed portions formed such that two or more hemispherical recessed portions are connected to each other in a partially overlapping manner and the connection boundary between the recessed portions is partitioned by a diaphragm. Accordingly, it is possible to provide the article where, compared to an article that has an anti-slipping effect obtained by a powder adhesion method, dust is minimally filled in the recessed portion for anti-slipping and, further, a larger friction force can be generated.
- the gloves according to the present embodiment are the gloves where the plurality of recessed portions are formed on the coating film layer that covers the surface of the gloves, wherein the plurality of recessed portions are formed of: the plurality of hemispherical recessed portions having an approximately circular shape as viewed in a plan view; and the plurality of diaphragm provided recessed portions formed such that two or more hemispherical recessed portions are connected to each other in a partially overlapping manner and the connection boundary between the recessed portions is partitioned by a diaphragm. Accordingly, it is possible to provide the gloves where, compared to the gloves that have an anti-slipping effect obtained by a powder adhesion method, dust is minimally filled in in the recessed portion, further, a larger friction force can be generated.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Gloves (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2020056794A JP2021155877A (ja) | 2020-03-26 | 2020-03-26 | 物品表面の滑り止め構造、滑り止め効果を付与するコーティング被膜層を備えた物品、滑り止め体、及び手袋、並びにコーティング被膜層の形成方法及び手袋の製造方法 |
PCT/JP2021/011468 WO2021193458A1 (ja) | 2020-03-26 | 2021-03-19 | 物品表面の滑り止め構造、滑り止め効果を付与するコーティング被膜層を備えた物品、滑り止め体、及び手袋、並びにコーティング被膜層の形成方法及び手袋の製造方法 |
Publications (2)
Publication Number | Publication Date |
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EP4129103A1 true EP4129103A1 (de) | 2023-02-08 |
EP4129103A4 EP4129103A4 (de) | 2023-09-06 |
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EP21776959.5A Withdrawn EP4129103A4 (de) | 2020-03-26 | 2021-03-19 | Gleitschutzstruktur für artikeloberfläche, artikel, gleitschutzkörper und handschuhe mit gleitschutzbeschichtung und verfahren zur herstellung von handschuhen |
Country Status (5)
Country | Link |
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US (1) | US20230337771A1 (de) |
EP (1) | EP4129103A4 (de) |
JP (1) | JP2021155877A (de) |
CN (1) | CN115279221A (de) |
WO (1) | WO2021193458A1 (de) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US4329312A (en) * | 1969-11-14 | 1982-05-11 | Affiliated Hospital Products, Inc. | Method of making gloves |
JP4269478B2 (ja) * | 2000-04-13 | 2009-05-27 | 中部物産貿易株式会社 | 滑り止め手袋の製造方法 |
JP2002129413A (ja) * | 2000-10-17 | 2002-05-09 | Mizuno Corp | スパッツ |
JP2002129418A (ja) * | 2000-10-23 | 2002-05-09 | Noosu Kasei Kogyo Kk | 通気性滑り止め手袋の製造方法 |
JP4331782B2 (ja) | 2007-03-30 | 2009-09-16 | 株式会社東和コーポレーション | 樹脂表面の形成方法、表面に異なる大きさの凹状部が混在する物品の製造方法及びその物品、手袋の製造方法及び手袋 |
JP6004621B2 (ja) * | 2011-09-13 | 2016-10-12 | 株式会社東和コーポレーション | 手袋 |
-
2020
- 2020-03-26 JP JP2020056794A patent/JP2021155877A/ja active Pending
-
2021
- 2021-03-19 WO PCT/JP2021/011468 patent/WO2021193458A1/ja unknown
- 2021-03-19 US US17/905,393 patent/US20230337771A1/en active Pending
- 2021-03-19 EP EP21776959.5A patent/EP4129103A4/de not_active Withdrawn
- 2021-03-19 CN CN202180015384.2A patent/CN115279221A/zh active Pending
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EP4129103A4 (de) | 2023-09-06 |
WO2021193458A1 (ja) | 2021-09-30 |
CN115279221A (zh) | 2022-11-01 |
JP2021155877A (ja) | 2021-10-07 |
US20230337771A1 (en) | 2023-10-26 |
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