gloves
The glove's matrix resin innermost layer with cellulose particles addresses sweat absorption issues, ensuring quick diffusion and reduced stuffiness during extended wear.
Patent Information
- Application Number
- JP2021181384
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-11-05
- Publication Date
- 2025-10-06
- Estimated Expiration
- 2041-11-05
AI Technical Summary
Existing gloves fail to adequately absorb large amounts of sweat generated over extended wear, leading to stuffiness inside the glove, especially when cumulative wearing time exceeds one hour.
A glove design featuring a matrix resin innermost layer with 7-45 parts by mass cellulose particles and a non-foamed structure, with cellulose particles exposed to enhance sweat absorption and diffusion, and a specific particle size range of 10-45 μm to promote quick drying.
The design effectively suppresses glove stuffiness by quickly absorbing and diffusing sweat, reducing discomfort and ease of removal even with prolonged wear.
Smart Images

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Abstract
Description
[Technical Field]
[0001] The present invention relates to gloves. [Background technology]
[0002] Conventionally, gloves have been used that have the function of preventing the inside of the gloves from becoming stuffy due to sweat generated by perspiration when worn by a wearer for a long period of time (for example, one hour), in other words, preventing the inside of the gloves from becoming wet. For example, Patent Document 1 listed below describes a glove that includes a glove body that covers a wearer's hand, the glove body including a matrix resin such as elastomer latex and a fibrous material such as cotton, and an innermost layer that forms the inner surface of the glove. Furthermore, Patent Document 1 below describes that with gloves configured as described above, even if the wearer sweats after wearing the gloves for a long period of time, the sweat generated by the sweating is absorbed by the innermost layer, thereby preventing the inside of the gloves from becoming stuffy; more specifically, it describes that even after wearing gloves configured as described above for one hour, the wearer still feels that the inside of the gloves is dry. Furthermore, Patent Document 1 below describes that by forming the innermost layer as a foam layer, sweat generated by perspiration can be more sufficiently absorbed by the innermost layer. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Special Publication No. 2007-514575 Summary of the Invention [Problem to be solved by the invention]
[0004] Incidentally, the above-mentioned Patent Document 1 describes that when the gloves configured as described above are worn for one hour, the innermost layer can absorb sweat generated by perspiration to such an extent that the wearer still feels that the inside is dry. On the other hand, if the gloves configured as described above are worn for more than one hour, it is expected that the amount of sweat produced by perspiration will be greater. Therefore, there is a concern that in gloves constructed as described above, the innermost layer may not be able to adequately absorb such large amounts of sweat, to the extent that the wearer still feels that the inside is dry. Furthermore, even if the wearer wears the glove for less than one hour each time, if the cumulative wearing time exceeds one hour after multiple wearing and removing, the cumulative amount of sweat absorbed by the innermost layer will be large, and in such cases too, there is a concern that the innermost layer will not be able to sufficiently absorb sweat. If the innermost layer is unable to absorb sweat sufficiently in this way, the inside of the glove becomes stuffy due to the sweat that can no longer be absorbed, which is undesirable. However, it is difficult to say that sufficient consideration has been given to these problems.
[0005] In view of the above problems, an object of the present invention is to provide gloves that can relatively prevent stuffiness inside even when a relatively large amount of sweat is generated inside. [Means for solving the problem]
[0006] The glove according to the present invention comprises: A glove body for covering a wearer's hand, the glove body has an innermost layer comprising a matrix resin and cellulose particles and constituting an inner surface of the glove; the cellulose particles are at least partially exposed from the inner surface; the innermost layer contains 7 parts by mass or more and 45 parts by mass or less of the cellulose particles relative to 100 parts by mass of the matrix resin, and is formed as a non-foamed layer; The cellulose particles have an average particle size of 10 μm or more and 45 μm or less.
[0007] With this configuration, even when a relatively large amount of sweat is generated inside the glove, stuffiness inside the glove can be relatively suppressed.
[0008] In addition, in the above gloves, The innermost layer preferably contains 8 parts by mass or more and 25 parts by mass or less of the cellulose particles per 100 parts by mass of the matrix resin.
[0009] With this configuration, even when a relatively large amount of sweat is generated inside the glove, stuffiness inside the glove can be further suppressed. Furthermore, even when a relatively large amount of sweat is generated inside the gloves, the gloves can be easily removed from the wearer's hands.
[0010] In addition, in the above gloves, The static contact angle immediately after a water droplet is brought into contact with the surface of the innermost layer is defined as θ1, When the static contact angle 5 seconds after the water droplet contacts the surface of the innermost layer is defined as θ2, It is preferable that the rate of change Rc of the static contact angle calculated by the following formula (1) is 20% or more and 90% or less.
[0011]
number
[0012] With this configuration, even when a relatively large amount of sweat is generated inside the glove, stuffiness inside the glove can be further suppressed. [Effects of the Invention]
[0013] As described above, according to the present invention, it is possible to provide gloves that can relatively prevent stuffiness inside even when a relatively large amount of sweat is generated inside. [Brief explanation of the drawings]
[0014] [Figure 1] 1A and 1B are diagrams showing the overall structure of a glove according to an embodiment of the present invention, in which (a) is a diagram showing the overall structure of the glove from the back of the hand, and (b) is a diagram showing the overall structure of the glove from the palm of the hand. [Figure 2] 1 is a cross-sectional view of a glove according to an embodiment of the present invention. [Figure 3] 1 is a flow diagram showing a method for manufacturing a glove according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0015] Hereinafter, a glove according to one embodiment of the present invention will be described with reference to the drawings. In the following, an example will be described in which a glove includes a glove body and a hem portion connected to the glove body and covering at least the wrist of a wearer. In this specification, the term "stuffiness" refers to a phenomenon in which the amount of sweat produced by a glove wearer exceeds the amount of sweat evaporating from inside the glove, causing sweat to remain in a gaseous state inside the glove, and also includes a phenomenon in which sweat remains in a liquid state on the surface of the wearer's hand, causing the inside of the glove to become stuffy.
[0016] (gloves) As shown in Figures 1(a) and (b), the glove 1 of this embodiment comprises a glove body 10 that covers the wearer's hand, and a hem portion 20 that is connected to the glove body 10 and covers at least the wearer's wrist. Figures 1(a) and (b) show an example of a glove 1 in which the glove body 10 and the hem portion 20 are integrally formed, but in the glove 1, the glove body 10 and the hem portion 20 may also be formed separately.
[0017] In the glove 1 of this embodiment, the glove body 10 has a main bag portion 10a formed in a bag shape to cover the back and palm of the wearer's hand, and a finger bag portion 10b extending from the main bag portion 10a to cover the wearer's fingers. The finger pocket 10b has a first finger portion 10b1, a second finger portion 10b2, a third finger portion 10b3, a fourth finger portion 10b4, and a fifth finger portion 10b5, which respectively cover the wearer's first finger (thumb), second finger (index finger), third finger (middle finger), fourth finger (ring finger), and fifth finger (pinky finger). The first finger portion 10b1 to the fifth finger portion 10b5 are formed in a cylindrical shape with closed fingertips.
[0018] In the glove 1 according to this embodiment, the glove body 10 has a two-layer structure as shown in FIG. Specifically, in the glove 1 according to this embodiment, the glove body 10 has a resin layer 30 that forms the outer surface of the glove 1, and a stuffiness suppression layer 40 that is laminated on one side of the resin layer 30 and forms the inner surface of the glove 1. That is, in the glove body 10 of the glove 1 according to this embodiment, the stuffiness prevention layer 40 is the innermost layer (the layer that comes into contact with the hand of the wearer of the glove 1) that constitutes the inner surface of the glove 1, and the resin layer 30 is the outermost layer that constitutes the outer surface of the glove 1.
[0019] The resin layer 30 is mainly composed of a matrix resin. The matrix resin may be any of various known resins, such as vinyl chloride resin, natural rubber, nitrile butadiene rubber, chloroprene rubber, fluororubber, silicone rubber, isoprene rubber, polyurethane, acrylic resin, or modified products thereof (e.g., carboxyl-modified products), or a combination of various known resins. The resin layer 30 functions as a waterproof layer that prevents moisture adhering to the outer surface of the glove 1 from penetrating into the inside of the glove 1.
[0020] The resin layer 30 may also contain components other than the matrix resin. Examples of components other than the matrix resin include vulcanizing agents such as sulfur; vulcanization accelerators such as zinc dimethylthiocarbamate, zinc dibutylthiocarbamate, and zinc oxide; crosslinking agents such as blocked isocyanates; plasticizers and softeners such as mineral oil and phthalate esters; antioxidants and anti-aging agents such as 2,6-di-t-butyl-4-methylphenol; thickeners such as acrylic polymers and polysaccharides; foaming agents such as azocarbonamide; foaming agents and foam stabilizers such as sodium stearate; anti-tack agents such as paraffin wax; inorganic fillers such as carbon black, calcium carbonate, and finely powdered silica; metal oxides such as zinc oxide; pH adjusters such as potassium hydroxide; thickeners; and pigments.
[0021] The resin layer 30 is preferably formed to have a thickness of 0.05 mm or more and 1.5 mm or less. The thickness of the resin layer 30 is measured by observing the cross section of the layer at 200x magnification using a digital microscope (Keyence Corporation, Model VHX-6000) and arithmetically averaging the values measured at 10 points spaced 500 µm apart. The cross section observation using the digital microscope is performed by observing the cross section of the center of the palm of the glove. Here, the central part of the palm of the glove means the vicinity of the intersection of a straight line drawn from the tip of the crotch between the third finger portion 10b3 and the fourth finger portion 10b4 in the longitudinal direction (the direction in which the third finger portion 10b3 extends) and a straight line drawn from the tip of the crotch between the first finger portion 10b1 and the second finger portion 10b2 in the lateral direction (the direction perpendicular to the longitudinal direction).
[0022] The resin layer 30 is preferably formed as a non-foamed layer. This results in high strength. In this specification, the term "non-foamed" refers to a state in which the matrix resin is not foamed. The non-foamed state refers to a state in which the expansion ratio is 1.0.
[0023] The stuffiness suppression layer 40 contains a matrix resin and cellulose particles. The stuffiness suppression layer 40 is formed as a non-foamed layer.
[0024] The matrix resin contained in the stuffiness suppression layer 40 may be the same as the matrix resin constituting the resin layer 30 .
[0025] Various known cellulose particles, regenerated cellulose particles, etc. can be used as the cellulose particles 40a contained in the stuffiness-preventing layer 40. The cellulose particles 40a are preferably particles obtained by pulverizing natural wood cellulose (hereinafter referred to as pulverized cellulose particles). As the cellulose particles 40a, for example, KC Flock (registered trademark) can be used. As the KC flock, for example, KC flock W-100GK (manufactured by Nippon Paper Industries Co., Ltd.) can be used.
[0026] The stuffiness suppression layer 40 contains 7 parts by mass or more and 45 parts by mass or less of cellulose particles 40a with respect to 100 parts by mass of the matrix resin. The stuffiness suppression layer 40 preferably contains 7 parts by mass or more and 35 parts by mass or less of the cellulose particles 40a per 100 parts by mass of the matrix resin. Since the stuffiness suppression layer 40 contains 7 parts by mass or more and 35 parts by mass or less of cellulose particles 40a per 100 parts by mass of the matrix resin, stuffiness inside the glove 1 can be further suppressed even when a relatively large amount of sweat is generated inside the glove. The stuffiness suppression layer 40 preferably contains 8 parts by mass or more and 25 parts by mass or less of the cellulose particles 40a per 100 parts by mass of the matrix resin. The stuffiness suppression layer 40 contains 8 parts by mass or more and 25 parts by mass or less of cellulose particles 40a per 100 parts by mass of the matrix resin, so that stuffiness inside the glove 1 can be further suppressed even when a relatively large amount of sweat is generated inside the glove 1. Furthermore, even when a relatively large amount of sweat is generated inside the glove 1, the glove 1 can be easily removed from the wearer's hand. Moreover, the stuffiness suppression layer 40 more preferably contains 9 parts by mass or more, and even more preferably 10 parts by mass or more, of the cellulose particles 40a per 100 parts by mass of the matrix resin. Furthermore, it is more preferable that the stuffiness suppression layer 40 contains 20 parts by mass or less of the cellulose particles 40a per 100 parts by mass of the matrix resin.
[0027] The cellulose particles 40a contained in the stuffiness suppression layer 40 have an average particle diameter of 10 μm or more and 45 μm or less. The cellulose particles 40a preferably have an average particle size of 17 μm or more and 45 μm or less.
[0028] The average particle size of cellulose particles 40a was measured before blending using a laser diffraction particle size analyzer (Mastersizer 2000 manufactured by Malvern Panalytical). Specifically, the measurement method employed the Mastersizer 2000 software, employing a scattering measurement mode. Laser light was irradiated onto a wet cell through which the dispersion liquid containing the measurement sample (cellulose particles) was circulated, obtaining the scattered light distribution from the measurement sample. The scattered light distribution was then approximated by a log-normal distribution. The particle size corresponding to 50% cumulative density (D50) within the range of the particle size distribution (horizontal axis, σ) set to a minimum of 0.021 μm and a maximum of 2000 μm was used as the average particle size. The dispersion liquid used was 350 mL of pure water plus 60 mL of 0.5% by mass hexametaphosphate aqueous solution. The concentration of the measurement sample in the dispersion liquid was 10%. Prior to measurement, the dispersion liquid containing the measurement sample was treated with an ultrasonic homogenizer for 2 minutes. The above measurement is carried out while stirring the dispersion containing the measurement sample at a stirring speed of 1500 rpm.
[0029] The cellulose particles 40a are preferably fibrous particles having an L / D ratio of 2.0 or more, preferably 2.5 or more, and more preferably 3.0 or more, where D is the width of the particle and L is the length of the particle. Furthermore, for fibrous particles, L / D is preferably 50 or less, more preferably 30 or less, even more preferably 20 or less, and particularly preferably 10 or less. When the cellulose particles 40a are fibrous particles, the length L is preferably 5 μm to 100 μm, more preferably 10 μm to 95 μm, and the width D is preferably 1 μm to 25 μm, more preferably 3 μm to 20 μm. The particle width refers to the length of the fibrous particle in the short direction. When the short direction length varies depending on the measurement location, the largest value is taken as the particle width. Furthermore, the particle length refers to the length of the fibrous particle in the longitudinal direction. When the fibrous particle is linear, the particle length refers to the length from one end to the other of the straight line. When the fibrous particle is crimped (e.g., crimped) or bent (e.g., L-shaped or V-shaped), the particle length refers to the length of the line connecting one end of the particle to the other end in the crimped or bent state. The particle width D and particle length L can be determined by measuring L and D for any 10 particles before blending while observing them at a magnification of 500x or 1000x using a digital microscope (Keyence Corporation, model VHX-6000) and then calculating the arithmetic mean of the measured L and D values.
[0030] Furthermore, the cellulose particles 40a have a relatively high water absorption rate because the cellulose has many hydroxyl groups. This allows the cellulose particles 40a to attract moisture relatively easily. In this specification, "relatively high water absorption rate" means that the saturated water absorption rate is 7% or more under an environment of a temperature of 25°C and a relative humidity of 65%.
[0031] The stuffiness suppression layer 40 may contain additives other than the cellulose particles 40a. Examples of additives other than the cellulose particles 40a include plasticizers, pH adjusters, vulcanizing agents, metal oxides, vulcanization accelerators, antioxidants, inorganic fillers, antifoaming agents, thickeners, and pigments.
[0032] In the stuffiness-preventing layer 40, as shown in FIG. 2, at least a part of the cellulose particles 40a is exposed from the matrix resin constituting the inner surface of the glove 1.
[0033] As shown in FIG. 2, the stuffiness suppression layer 40 has convex portions 40A formed on the inner surface of the glove 1 by agglomerating a plurality of cellulose particles 40a contained in the stuffiness suppression layer 40 and raising the inner surface, and concave portions 40B recessed toward the resin layer 30 from the convex portions 40A. That is, the stuffiness suppression layer 40 (the inner surface of the glove 1) has irregularities formed thereon. In the stuffiness-preventing layer 40, the convex portions 40A and the concave portions 40B are determined using a digital microscope (manufactured by Keyence Corporation, model VHX-6000). Specifically, using dedicated software, the cross-sectional shape (measurement curve) of the stuffiness-suppressing layer 40 is displayed on a monitor under the conditions of using line roughness mode as the measurement mode, "roughness" as the measurement type, 1 mm as the reference length, and no cutoff. Then, in the portion of the measurement curve corresponding to the reference length, the portion that protrudes above the monitor from the average line of the measurement curve is determined to be a convex portion 40A, and the portion that is recessed below the average line is determined to be a concave portion 40B.
[0034] The stuffiness suppression layer 40 is usually 0.01 m m The stuffiness prevention layer 40 is preferably formed to have a thickness of 0.02 mm or more and 0.07 mm or less. The thickness of the stuffiness suppression layer 40 is measured by observing the cross section of the layer at a magnification of 200 times using a digital microscope (manufactured by Keyence Corporation, model VHX-6000) and calculating the arithmetic average of the values measured at any 50 points.
[0035] In the glove body 10, the stuffiness suppression layer 40 may be formed over the entire area of one side of the resin layer 30 (the inner surface when worn), or may be formed on a part of one side of the resin layer 30 (the inner surface when worn). Here, the palm of the wearer of glove 1 can be easily recessed away from the inner surface of glove 1, whereas the back of the hand of the wearer of glove 1 cannot be easily recessed away from the inner surface of glove 1. Therefore, when a wearer of glove 1 removes his / her hand from inside glove 1, the inner surface of glove 1 tends to stick to the back of the wearer's hand, and as a result, the inner surface of glove 1 tends to get caught on the back of the wearer's hand. The sweatier the back of the hand of the wearer of glove 1, the more pronounced the catch of the back of the hand on the inner surface of glove 1 becomes. For this reason, it is preferable that the stuffiness suppression layer 40 is formed at least on the back of the hand of the wearer of the glove 1 in order to prevent the back of the hand from getting stuffy. Furthermore, as described above, although the palm of the wearer of glove 1 can be easily recessed so as to separate from the inner surface of glove 1, if the palm of the wearer of glove 1 is sweaty, the palm of the wearer of glove 1 is likely to get caught on the inner surface of glove 1. In this way, in order to prevent the palm of the wearer of the glove 1 from easily getting caught on the inner surface of the glove 1, it is more preferable that the stuffiness suppression layer 40 is also formed on the palm portion.
[0036] The skirt portion 20 is formed in a cylindrical shape. The bottom hem 20 has a two-layer structure as shown in FIG. 2, similar to the glove body 10. Specifically, the hem portion 20 has a resin layer 30 that forms the outer surface of the glove 1 and a stuffiness suppression layer 40 that is laminated on one side of the resin layer 30 and forms the inner surface of the glove 1. That is, even in the hem portion 20, the stuffiness suppression layer 40 is the innermost layer (the layer that comes into contact with at least the wrist of the wearer of the glove 1) that forms the inner surface of the glove 1, and the resin layer 30 is the outermost layer that forms the outer surface of the glove 1. The resin layer 30 of the hem portion 20 is configured in the same manner as the resin layer 30 of the glove body 10, and the stuffiness suppression layer 40 of the hem portion 20 is configured in the same manner as the stuffiness suppression layer 40 of the glove body 10, so their explanation will be omitted.
[0037] As mentioned above, the cuffs 20 cover at least the wrists of the wearer. The cuff 20 may cover a portion of the wearer's forearm in addition to the wrist. In the glove 1 according to this embodiment, the hem portion 20 is preferably formed integrally with the glove body 10 in a continuous manner.
[0038] In the hem portion 20, the stuffiness suppression layer 40 may be formed over the entire area of one side of the resin layer 30 (the inner surface when worn), or may be formed on a part of one side of the resin layer 30 (the inner surface when worn). Here, a wearer of the glove 1 is likely to sweat mainly at the wrist in the bottom hem 20. Therefore, when forming the stuffiness suppression layer 40 on a part of one surface (the inner surface when worn) of the resin layer 30, it is preferable to form it at least on the wrist.
[0039] In the glove 1 according to the present embodiment, when the static contact angle immediately after a water droplet is brought into contact with the surface of the stuffiness-suppressing layer 40 constituting the innermost layer is defined as θ1, and the static contact angle 5 seconds after the water droplet is brought into contact with the surface of the stuffiness-suppressing layer 40 constituting the innermost layer is defined as θ2, it is preferable that the rate of change Rc of the static contact angle calculated by the following formula (1) is 20% or more and 90% or less. Here, "immediately after the water droplets are brought into contact with the surface of the stuffiness suppression layer 40" means within one second after the water droplets are brought into contact with the surface of the stuffiness suppression layer 40. Moreover, the rate of change Rc of the static contact angle calculated by the following formula (1) is more preferably 30% or more, and even more preferably 40% or more. Furthermore, it is more preferable that the rate of change Rc of the static contact angle calculated by the following formula (1) is 85% or less. By keeping the rate of change Rc of the static contact angle calculated by the following formula (1) within the above range, even when a relatively large amount of sweat is generated inside the glove 1, stuffiness inside the glove 1 can be further suppressed.
[0040]
number
[0041] The static contact angle θ1 and the static contact angle θ2 can be determined as follows. (1) A part of the glove body 10 or a part of the hem 20 is cut out in a predetermined size from any part of the glove 1 to obtain a test piece. (2) The specimen is dried in an oven at 100°C for 30 minutes. (3) After drying, a predetermined amount of water droplets is brought into contact with the surface of the matrix resin of the stuffiness-suppressing layer 40 of the test specimen. Specifically, a micropipette is used to bring 25 μL of water droplets into contact with the surface of the matrix resin of the stuffiness-suppressing layer 40 of the test specimen. (4) A water droplet is brought into contact with the matrix resin surface of the stuffiness suppression layer 40 of the test specimen, and the static contact angle with the water droplet is measured within one second. The static contact angle immediately after a water droplet is brought into contact with the matrix resin surface of the stuffiness suppression layer 40 is measured using a contact angle measuring device "DropMaster500" (manufactured by Kyowa Interface Science Co., Ltd.) and evaluation analysis software "FAMAS" (manufactured by Kyowa Interface Science Co., Ltd.). The static contact angle immediately after a water droplet is brought into contact with the surface of the matrix resin of the sweat suppression layer 40 is calculated by the θ / 2 method. (5) A water droplet is brought into contact with the matrix resin surface of the stuffiness suppression layer 40 of the test specimen, and then, 5 seconds later, the static contact angle with the water droplet is measured. The static contact angle 5 seconds after the water droplet is brought into contact with the matrix resin surface of the stuffiness-suppressing layer 40 is measured in the same manner as the static contact angle immediately after the water droplet is brought into contact with the stuffiness-suppressing layer 40. (6) (1) to (5) are performed on test specimens (three test specimens) cut out from any three positions of the glove body 10, and for each test specimen, the static contact angle value immediately after a water droplet is brought into contact with the matrix resin surface of the stuffiness-suppressing layer 40 and the static contact angle value 5 seconds after the water droplet is brought into contact with the matrix resin of the stuffiness-suppressing layer 40 are obtained, and then these values are arithmetically averaged to determine the static contact angle θ1 and the static contact angle θ2.
[0042] Although it is unclear why the glove 1 according to this embodiment can relatively prevent stuffiness inside even when a relatively large amount of sweat is generated inside, the inventors speculate as follows.
[0043] In the glove 1 according to the present embodiment, in the stuffiness-preventing layer 40, at least a part of the cellulose particles 40a is exposed from the surface of the matrix resin (the inner surface of the glove 1). More specifically, in the glove 1 according to this embodiment, the average particle size of the cellulose particles 40a and the content of the cellulose particles 40a in the stuffiness suppression layer 40 are adjusted so that at least a portion of the cellulose particles 40a is appropriately exposed from the surface of the matrix resin (the inner surface of the glove 1). Furthermore, as described above, the cellulose particles 40a have many hydroxyl groups, and therefore, as explained above, are relatively prone to absorbing moisture. From this, it is considered that the surface of the matrix resin of the stuffiness suppression layer 40 (the inner surface of the glove 1) has an appropriate hydrophilicity because at least a part of the cellulose particles 40a is exposed to an appropriate extent. Therefore, when a wearer sweats relatively much while wearing the glove 1 according to this embodiment and the sweat adheres to the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1), it is thought that the sweat will be attracted to the cellulose particles 40a exposed from the surface and spread thinly over the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1). In addition, the stuffiness suppression layer 40 contains a predetermined amount (7 parts by mass or more and 45 parts by mass or less per 100 parts by mass of the matrix resin) of cellulose particles 40a having a predetermined average particle diameter (10 μm or more and 45 μm or less), so that the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) has an appropriate unevenness (protrusions 40A and recesses 40B). Therefore, compared to gloves having a relatively flat surface from which at least a part of the cellulose particles are exposed, the glove 1 according to this embodiment has a moderate unevenness formed thereon, which increases the surface area of the stuffiness suppression layer 40. In the glove 1 according to this embodiment, the amount of cellulose particles 40a exposed from the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) is relatively large because the surface area of the stuffiness suppression layer 40 is large, which is thought to promote the diffusion of sweat on the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1).
[0044] Furthermore, in the glove 1 according to the present embodiment, the stuffiness suppression layer 40 is formed as a non-foamed layer, and therefore it is considered that there are relatively fewer depressions formed on the inside (the resin layer 30 side) of the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) compared to when the stuffiness suppression layer 40 is formed as a foamed layer. Therefore, it is considered that the sweat that has diffused on the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) penetrates into the stuffiness suppression layer 40 and remains inside the stuffiness suppression layer 40.
[0045] In addition, in the glove 1 according to this embodiment, the average particle diameter of the cellulose particles 40a contained in the stuffiness suppression layer 40 is 10 μm or more and 45 μm or less, which is significantly shorter than short fibers such as pile fibers having a fiber length of 300 μm or more and 800 μm or less. Therefore, it is considered that the length of the exposed portion of the cellulose particles 40a from the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) is also relatively shorter than such short fibers. Therefore, even if sweat is absorbed by the exposed portions of the cellulose particles 40a, the exposed portions of the cellulose particles 40a can be dried relatively quickly since the length of the exposed portions is relatively short.
[0046] As a result of the above, even when the wearer sweats a relatively large amount, the sweat adhering to the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) is prevented from penetrating into the stuffiness suppression layer 40 and remaining there, and is diffused relatively quickly on the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) while forming a thin water film, so that it is thought that the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) dries relatively quickly. Furthermore, since the length of the exposed portion of the cellulose particles 40a from the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1) is relatively short, even if sweat is absorbed in the exposed portion, it is thought that the sweat can be dried relatively quickly. As a result, the inventors believe that the glove 1 according to this embodiment can relatively prevent stuffiness inside even when a relatively large amount of sweat is generated inside.
[0047] According to the above-mentioned mechanism, sweat adhering to the surface of the wearer's skin is easily transferred to the surface of the matrix resin of the stuffiness suppression layer 40 (the inner surface of the glove 1), so that the sweat is easily removed from the surface of the wearer's skin, and as a result, discomfort when wearing the glove is reduced. Furthermore, since short fibers such as pile have a fiber length of 300 μm or more and 800 μm or less, when they are included in the stuffiness suppression layer 40, the sweat held by the capillary phenomenon occurring in the short fibers becomes difficult to dry, and the sweat becomes difficult to diffuse on the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1), making the inside of the glove 1 prone to become stuffy. However, in the glove 1 according to this embodiment, the stuffiness suppression layer 40 contains cellulose particles 40a which are significantly shorter than short fibers such as pile, and therefore, it is possible to suppress the difficulty of retained sweat drying and the difficulty of sweat diffusing on the matrix resin surface of the stuffiness suppression layer 40 (the inner surface of the glove 1). Furthermore, when the stuffiness suppression layer 40 is formed as a foam layer, sweat tends to accumulate in voids formed on the surface of the foam layer due to foaming, making it difficult for the sweat to dry inside the glove. Also, when the wearer grips an object, the sweat accumulated in the voids formed on the surface of the foam layer is pushed out onto the surface of the matrix resin of the stuffiness suppression layer 40, which can increase discomfort when wearing the glove. However, in the glove 1 according to the present embodiment, the stuffiness suppression layer 40 is formed as a non-foamed layer, and therefore, it is possible to suppress sweat from accumulating inside the stuffiness suppression layer 40. This prevents sweat from drying easily inside the glove 1 and prevents sweat from being pushed out onto the surface of the matrix resin of the stuffiness-suppressing layer 40, which increases discomfort when worn. The short fibers generally have an L / D value of 50 or more, where D is the width of the short fibers and L is the length of the short fibers.
[0048] (Glove manufacturing method) The glove 1 according to this embodiment is manufactured by a manufacturing method including a coagulant layer forming step S1 of forming a coagulant layer containing a coagulant on the surface of a hand mold, a resin layer forming step S2 of forming a resin layer 30 so as to cover the coagulant layer, a stuffiness suppression layer forming step S3 of forming a stuffiness suppression layer 40 so as to cover the resin layer 30, and a removal step S4 of removing the laminate of the resin layer 30 and the stuffiness suppression layer 40 covering the hand mold from the hand mold while inverting it. In the present embodiment, an example in which the glove 1 is manufactured by carrying out the coagulant layer forming step S1 has been described, but the coagulant layer forming step S1 is not an essential step. That is, the coagulant layer forming step S1 may be omitted in the method for manufacturing the glove 1.
[0049] <Coagulant layer formation step S1> In the coagulant layer forming step S1, the hand mold is immersed in a coagulant solution to form a coagulant layer on the outer surface of the hand mold. Specifically, in the coagulant layer formation step S1, the hand mold is immersed in the coagulant solution, and then pulled out, and the solvent of the coagulant solution is evaporated to form a coagulant layer on the outer surface of the hand mold. As the coagulant solution, various known solutions can be used. As the coagulant solution, for example, a methanol solution or an aqueous solution containing a polyvalent metal salt or an organic acid can be used.
[0050] Examples of the polyvalent metal salts include barium chloride, calcium chloride, magnesium chloride, zinc chloride, aluminum chloride, barium nitrate, calcium nitrate, zinc nitrate, barium acetate, calcium acetate, zinc acetate, calcium sulfate, magnesium sulfate, and aluminum sulfate. These may be used alone or in combination of two or more.
[0051] The lower limit of the content of the polyvalent metal in the coagulant solution is preferably 8% by mass, more preferably 15% by mass, and even more preferably 40% by mass. When the content of the polyvalent metal in the coagulant solution is 8% by mass or more, the coagulant solution can exhibit sufficient coagulation power. As a result, as will be described later, when the hand mold on which the coagulant layer has been formed is immersed in a resin composition in the resin layer forming step S2, it is possible to prevent the resin composition from adhering to the coagulant layer insufficiently thick, and it is also possible to prevent the resin composition from dripping from the coagulant layer, resulting in an uneven thickness of the resin layer 30. The upper limit of the polyvalent metal content in the coagulant solution is preferably 95% by mass, and more preferably 90% by mass. By having the content of the polyvalent metal in the coagulant solution be 95% by mass or less, as will be described later, when the hand mold on which the coagulant layer has been formed is immersed in a resin composition in the resin layer forming step S2, excessive aggregation can be suppressed in the resin composition attached to the surface of the coagulant layer. This can prevent the thickness of the resin layer 30 from becoming non-uniform.
[0052] Examples of the organic acid include acetic acid and citric acid. The content of the organic acid in the coagulant solution is preferably 5% by mass or more and 35% by mass or less. The organic acid may be used alone or in combination with the polyvalent metal. By using the organic acid in combination with the polyvalent metal, the glove body 10 and the cuff 20 can be made to have a sufficient thickness. Furthermore, the ability to form the resin layer 30 using the resin composition can be controlled relatively easily.
[0053] The temperature of the hand mold when immersed in the coagulant solution is preferably 40°C or higher and 80°C or lower. By setting the temperature of the hand mold to 40°C or higher and 80°C or lower, the coagulant solution can be applied to the outer surface of the hand mold with a relatively uniform thickness, thereby making it possible to make the coagulant layer have a relatively uniform thickness. The time for which the hand mold is immersed in the coagulant solution is not particularly limited, but is usually between 5 seconds and 1 minute.
[0054] After the hand mold is removed from the coagulant solution, the temperature at which the solvent in the coagulant solution is evaporated is preferably 25°C or higher and 80°C or lower. Furthermore, the time for evaporating the solvent of the coagulant solution after the hand mold is removed from the coagulant solution is preferably 10 seconds or more and 600 seconds or less. By setting the temperature and time for evaporating the solvent of the coagulant solution within the above ranges, it is possible to form the coagulant layer with a relatively uniform thickness on the outer surface of the hand mold.
[0055] <Resin layer formation process S2> In the resin layer forming step S2, the hand mold on which the coagulant layer has been formed is immersed in a first coating liquid containing a matrix resin, thereby forming a resin layer 30 so as to cover the coagulant layer. Specifically, in the resin layer formation process S2, the hand mold on which the coagulant layer has been formed is immersed in the first coating liquid, pulled out, and then dried at a predetermined temperature for a predetermined time to form a resin layer 30 covering the coagulant layer. In the resin layer forming step S2, it is preferable to immerse the hand mold on which the coagulant layer has been formed in the first coating liquid so as to cover the entire outer surface of the coagulant layer.
[0056] The matrix resin contained in the first coating liquid may be any of various known resins, such as vinyl chloride resin, natural rubber, nitrile butadiene rubber, chloroprene rubber, fluororubber, silicone rubber, isoprene rubber, polyurethane, acrylic resin, or modified products thereof (e.g., carboxyl modified products), or a combination of various known resins. Of these various known resins, a suitable one can be used depending on the purpose. For example, when the objective is to improve the strength and ease of processing of the resin layer 30, it is preferable to use latex such as natural rubber or nitrile butadiene rubber. In this case, the resin composition is prepared so that the solid content ratio is 20 to 60 mass %. The solid content ratio is adjusted using water or the like.
[0057] The first coating liquid may contain components other than the matrix resin. Examples of components other than the matrix resin include vulcanizing agents such as sulfur; vulcanization accelerators such as zinc dimethylthiocarbamate, zinc dibutylthiocarbamate, and zinc oxide; crosslinking agents such as blocked isocyanates; plasticizers and softeners such as mineral oil and phthalate esters; antioxidants and anti-aging agents such as 2,6-di-t-butyl-4-methylphenol; thickeners such as acrylic polymers and polysaccharides; foaming agents such as azocarbonamide; foaming agents and foam stabilizers such as sodium stearate; anti-tack agents such as paraffin wax; inorganic fillers such as carbon black, calcium carbonate, and finely powdered silica; metal oxides such as zinc oxide; pH adjusters such as potassium hydroxide; thickeners; and pigments. Among these, the resin composition preferably contains a pH adjuster, a vulcanizing agent, a metal oxide, a vulcanization accelerator, and an antioxidant.
[0058] The pH adjuster is preferably contained in an amount of 0.2 parts by mass or more and 0.7 parts by mass or less per 100 parts by mass of the matrix resin. The vulcanizing agent is preferably contained in an amount of 0.1 parts by mass or more and 2.0 parts by mass or less per 100 parts by mass of the matrix resin. The metal oxide is preferably contained in an amount of 1.0 part by mass or more and 4.0 parts by mass or less per 100 parts by mass of the matrix resin. The vulcanization accelerator is preferably contained in an amount of 0.1 parts by mass or more and 2.0 parts by mass or less per 100 parts by mass of the matrix resin. The antioxidant is preferably contained in an amount of 0.3 parts by mass or more and 0.7 parts by mass or less per 100 parts by mass of the matrix resin.
[0059] The first coating liquid may further contain an inorganic filler, an antifoaming agent, a thickener, and a pigment in appropriate amounts. As the inorganic filler, the antifoaming agent, the thickener, and the pigment, various known inorganic fillers, antifoaming agents, thickeners, and pigments can be used.
[0060] The viscosity of the first coating liquid is preferably 200 to 3000 mPa·s when measured under conditions V6 using a Brookfield viscometer.
[0061] The temperature of the hand mold when immersed in the first application liquid is preferably 25°C or higher and 60°C or lower. The time for which the hand mold is immersed in the first application liquid is not particularly limited, but can be, for example, 10 seconds or more and 200 seconds or less.
[0062] After the hand mold is removed from the first coating liquid, the hand mold coated with the first coating liquid is placed in, for example, an oven and dried at a predetermined temperature for a predetermined time, thereby forming a resin layer 30 so as to cover the coagulant. The hand mold coated with the first coating liquid can be dried, for example, at 80° C. for 60 minutes.
[0063] <Moisture suppression layer formation process S3> In the stuffiness suppression layer forming process S3, the hand mold on which the resin layer 30 has been formed is immersed in a second coating liquid containing a matrix resin and cellulose particles 40a, thereby forming the stuffiness suppression layer 40 so as to cover the resin layer 30. Specifically, in the stuffiness suppression layer forming process S3, the hand mold on which the resin layer 30 has been formed is immersed in the second coating liquid, pulled out, and then dried at a predetermined temperature for a predetermined time, thereby forming the stuffiness suppression layer 40 so as to cover the resin layer 30. In the stuffiness suppression layer forming step S3, it is preferable to immerse the hand mold on which the resin layer 30 has been formed in the second coating liquid so that the entire area of the resin layer 30 is covered.
[0064] The matrix resin contained in the second coating liquid may be the same as the matrix resin contained in the first coating liquid.
[0065] The cellulose particles 40a contained in the second coating liquid may be any of the various known cellulose particles mentioned above. The average particle size of the cellulose particles 40a contained in the second coating liquid is 10 μm or more and 45 μm or less. The second coating liquid contains 7 parts by mass or more and 45 parts by mass or less of cellulose particles 40a with respect to 100 parts by mass of the matrix resin. Furthermore, the second coating liquid is not subjected to any foaming treatment such as physical foaming or chemical foaming, that is, the second coating liquid is a non-foaming solution.
[0066] Similar to the first coating liquid, the second coating liquid may contain, in addition to the matrix resin, a pH adjuster, a vulcanizing agent, a metal oxide, a vulcanization accelerator, an antioxidant, an inorganic filler, a defoaming agent, a thickener, a pigment, and the like.
[0067] The viscosity of the second coating liquid is preferably 200 to 2000 mPa·s when measured under conditions V6 using a Brookfield viscometer.
[0068] The temperature of the hand mold when immersed in the second coating liquid is preferably 25°C or higher and 60°C or lower. The time for which the hand mold is immersed in the second coating liquid is not particularly limited, but can be, for example, from 10 seconds to 200 seconds.
[0069] After the hand mold is removed from the second coating liquid, the hand mold coated with the second coating liquid is placed in, for example, an oven and dried at a predetermined temperature for a predetermined time, thereby forming a stuffiness suppression layer 40 so as to cover the resin layer 30. The hand mold coated with the second coating liquid can be dried, for example, in the following two steps. (1) First, dry at 80°C for 60 minutes. (2) Next, dry at 120°C for 30 minutes. By drying at 120°C for 30 minutes in this manner, the resin layer 30 and the stuffiness suppression layer 40 can be dried more thoroughly, and in addition, the crosslinking (vulcanization) reaction can be sufficiently advanced to impart the glove 1 with the necessary strength.
[0070] <Removal process S4> In the removing step S4, the laminate of the resin layer 30 and the stuffiness suppression layer 40 covering the hand mold is removed from the hand mold while being inverted. That is, when the hand mold is covered, the layered body of the resin layer 30 and the stuffiness suppression layer 40 is removed from the hand mold so that the stuffiness suppression layer 40, which is the outermost layer of the glove 1, becomes the innermost layer of the glove 1, and the resin layer 30, which is the innermost layer of the glove 1, becomes the outermost layer of the glove 1.
[0071] As described above, by sequentially performing the coagulant layer forming step S1, the resin layer forming step S2, the stuffiness suppression layer forming step S3, and the removing step S4, it is possible to obtain a glove 1 in which the resin layer 30 forms the outermost layer and the stuffiness suppression layer 40 forms the innermost layer.
[0072] It should be noted that the glove according to the present invention is not limited to the above-described embodiment. The glove according to the present invention is also not limited by the above-described effects. The glove according to the present invention can be modified in various ways without departing from the gist of the present invention.
[0073] In the above embodiment, an example has been described in which glove 1 comprises a glove body 10 that covers the wearer's hand and a hem portion 20 that is connected to the glove body 10 and covers at least the wearer's wrist, but the configuration of glove 1 is not limited to this. The glove 1 may comprise only the glove body 10 that covers the wearer's hand.
[0074] In the above embodiment, an example has been described in which no processing is performed on the outer surface of the glove body 10 in the glove 1, but the configuration of the glove 1 is not limited to this. The glove 1 may have an anti-slip pattern on the outer surface of the glove body 10. When providing an anti-slip pattern on the outer surface of the glove body 10, it is preferable that the anti-slip pattern be provided on the palm portion of the main bag portion 10a, the fingertip portion of the first finger portion 10b1, the fingertip portion of the second finger portion 10b2, the fingertip portion of the third finger portion 10b3, the fingertip portion of the fourth finger portion 10b4, and the fingertip portion of the fifth finger portion 10b5.
[0075] Furthermore, the glove 1 may be provided with a reinforcing layer to increase its strength. Specifically, the glove 1 may have a reinforcing layer on the glove body 10 at the fingertip portion of the first finger portion 10b1, the fingertip portion of the second finger portion 10b2, the fingertip portion of the third finger portion 10b3, the fingertip portion of the fourth finger portion 10b4, and the fingertip portion of the fifth finger portion 10b5. The reinforcing layer can be provided by immersing the fingertip portions of the first finger portion 10b1, the second finger portion 10b2, the third finger portion 10b3, the fourth finger portion 10b4, and the fifth finger portion 10b5 of the glove body 10 in an application liquid containing a matrix resin, followed by drying. The coating liquid containing the matrix resin may be the same as the first coating liquid. [Example]
[0076] The present invention will be described in more detail below with reference to examples. The following examples are intended to further illustrate the present invention, but are not intended to limit the scope of the present invention.
[0077] [Example 1] The gloves according to Example 1 were made using the following materials.
[0078] (1st resin layer) First, a ceramic three-dimensional hand mold was heated to 50°C. Next, the parts of the heated three-dimensional mold that correspond to the glove body (hereinafter referred to as the glove body part) and the parts that correspond to the hem (hereinafter referred to as the hem part) were immersed in a coagulant solution prepared by dissolving 60 parts by weight of calcium nitrate in 100 parts by weight of water, and the coagulant solution was applied to the outer surfaces of the parts that correspond to the glove body and the hem part of the three-dimensional mold. After applying the coagulant solution, the three-dimensional mold was dried at 30°C for 3 minutes. Next, the glove body portion and hem portion of the three-dimensional hand mold after the coagulant solution had been applied were immersed in the first application liquid for forming a resin layer, and the first application liquid was applied to the outer surfaces of the glove body portion and hem portion of the three-dimensional hand mold. Next, the three-dimensional hand mold after the first coating liquid was applied was dried in an oven at 80°C for 60 minutes to form a resin layer on the parts of the three-dimensional hand mold corresponding to the glove body and the hem.
[0079] The first coating liquid was prepared by diluting a composition containing the ingredients shown in Table 1 with ion-exchanged water so that the solid content ratio was 42% by mass. The viscosity of the first coating liquid was 1000 mPa·s (measured using a Brookfield viscometer under V6 conditions (6 rpm, 25°C)). The first coating liquid was not subjected to any foaming treatment such as physical foaming or chemical foaming, that is, the first coating liquid was a non-foaming solution.
[0080] [Table 1]
[0081] (Sweat-suppressing layer) After the resin layer was formed, the three-dimensional mold was cooled to 60°C. Next, the glove body portion and the hem portion of the three-dimensional hand mold after the resin layer was formed were immersed in a second coating liquid for forming a stuffiness suppression layer, and the second coating liquid was applied to the entire outer surface of the resin layer. Next, the three-dimensional hand mold to which the second coating liquid had been applied was dried in the following two steps to form a stuffiness suppression layer over the entire outer surface of the resin layer. (1) First, dry it in an oven at 80°C for 60 minutes. (2) Next, dry it in an oven at 120°C for 30 minutes. Next, the laminate of the resin layer and the stuffiness-preventing layer covering the three-dimensional hand mold was inverted and removed from the three-dimensional hand mold. That is, when the three-dimensional hand mold is covered, the laminate of the resin layer and the stuffiness suppression layer is removed from the three-dimensional hand mold so that the stuffiness suppression layer, which is the outermost layer of the glove, becomes the innermost layer of the glove, and the resin layer, which is the innermost layer of the glove, becomes the outermost layer of the glove. In this way, the glove according to Example 1 was obtained.
[0082] The second coating liquid was prepared by diluting a composition containing the ingredients shown in Table 2 with ion-exchanged water to a solid content of 15% by mass. The viscosity of the second coating liquid was 500 mPa·s (measured using a Brookfield viscometer under V6 conditions (6 rpm, 25°C)). As shown in Table 2 below, the cellulose particles were added in an amount of 7.5 parts by mass per 100 parts by mass of the resin (NBR latex). Furthermore, the second coating liquid was not subjected to any foaming treatment such as physical foaming or chemical foaming, that is, the second coating liquid was a non-foaming solution. Furthermore, when the cross section of the stuffiness suppression layer was observed at a magnification of 300x using a digital microscope (Keyence Corporation, model VHX-6000), it was confirmed that some of the cellulose particles were exposed from the surface of the matrix resin of the stuffiness suppression layer.
[0083] [Table 2]
[0084] Before blending, the average particle size of the cellulose particles contained in the moisture-suppressing layer was measured using a laser diffraction particle size distribution analyzer (Malvern Panalytical Mastersizer 2000) and found to be 37 μm. The average particle size of the cellulose particles was measured as follows. Specifically, using the dedicated software Mastersizer 2000 software, the scattering measurement mode was adopted, laser light was irradiated onto a wet cell in which a dispersion liquid containing dispersed cellulose particles was circulated, and the scattered light distribution from the cellulose particles was obtained. The scattered light distribution was then approximated by a log-normal distribution, and the particle size at a cumulative degree of 50% (D50) within the range of the particle size distribution (horizontal axis, σ) set to a minimum of 0.021 μm and a maximum of 2000 μm was taken as the average particle size. In the measurement, the dispersion liquid used was prepared by adding 60 mL of a 0.5% by mass aqueous solution of hexametaphosphoric acid to 350 mL of pure water, and the concentration of cellulose particles in the dispersion liquid was set to 10%. Before the measurement, the dispersion containing the cellulose particles was treated with an ultrasonic homogenizer for 2 minutes. Furthermore, the measurement was carried out while stirring the dispersion containing the cellulose particles at a stirring speed of 1500 rpm. Furthermore, before blending, the ratio of the length L to the width D of the cellulose particles, i.e., L / D of the cellulose particles, was measured and found to be 6.3. L and D of the cellulose particles were measured by the method described above.
[0085] [Example 2] A glove according to Example 2 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 37 μm were added to the second coating liquid so that the number of parts added was 10 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 6.3.
[0086] [Example 3] A glove according to Example 3 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 37 μm were added to the second coating liquid so that the number of parts added was 15 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 6.3.
[0087] [Example 4] A glove according to Example 4 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 37 μm were added to the second coating liquid so that the number of parts added was 20 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 6.3.
[0088] [Example 5] A glove according to Example 5 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 37 μm were added to the second coating liquid so that the number of parts added was 30 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 6.3.
[0089] [Example 6] A glove according to Example 6 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 37 μm were added to the second coating liquid so that the number of parts added was 40 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 6.3.
[0090] [Example 7] A glove according to Example 7 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 10 μm were added to the second coating liquid so that the number of parts added was 20 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 4.3.
[0091] [Example 8] A glove according to Example 8 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 17 μm were added to the second coating liquid so that the number of parts added was 20 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 4.0.
[0092] [Example 9] A glove according to Example 9 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 45 μm were added to the second coating liquid so that the number of parts added was 20 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 5.8.
[0093] [Comparative Example 1] A glove according to Comparative Example 1 was prepared in the same manner as in Example 1, except that cellulose particles having an average particle size of 37 μm were added to the second coating liquid so that the number of parts added was 5 parts by mass relative to 100 parts by mass of the resin (NBR latex). The L / D ratio of the cellulose particles was 6.3.
[0094] Comparative Example 2 A glove according to Comparative Example 2 was prepared in the same manner as in Example 1, except that the second coating liquid did not contain cellulose particles.
[0095] [Reference example 1] As the glove of Reference Example 1, a commercially available glove was prepared, which contained pile fibers (rayon pile fibers) and had an innermost layer (a layer that comes into contact with the palm, back of the hand, and wrist of the wearer) configured as a foam layer.
[0096] (static contact angle) For the gloves of each example and each comparative example, the static contact angle θ1 immediately after a water droplet was brought into contact with the surface of the stuffiness-suppressing layer, and the static contact angle θ2 5 seconds after the water droplet was brought into contact with the surface of the matrix resin of the stuffiness-suppressing layer were measured. The static contact angle θ1 and the static contact angle θ2 were determined as follows. (1) A part of the glove body or a part of the hem is cut out from any part of the glove according to each example and comparative example into a flat rectangular shape of predetermined dimensions (a flat rectangular shape of 2 cm x 4 cm) to obtain a test specimen. (2) The specimen is dried in an oven at 100°C for 30 minutes. (3) After drying, a predetermined amount of water droplets is brought into contact with the surface of the matrix resin of the stuffiness-suppressing layer of the test specimen. Specifically, a 25 μL water droplet is brought into contact with the surface of the matrix resin of the stuffiness-suppressing layer of the test specimen using a micropipette. (4) A water droplet is brought into contact with the surface of the matrix resin of the moisture-reducing layer of the test specimen, and the static contact angle with the water droplet is measured within one second. The static contact angle immediately after a water droplet is brought into contact with the surface of the matrix resin of the stuffiness suppression layer is measured using a contact angle measuring device "DropMaster500" (manufactured by Kyowa Interface Science Co., Ltd.) and evaluation analysis software "FAMAS" (manufactured by Kyowa Interface Science Co., Ltd.). The static contact angle immediately after a water droplet is brought into contact with the surface of the matrix resin of the sweat suppression layer is calculated by the θ / 2 method. (5) A water droplet is brought into contact with the surface of the matrix resin of the moisture-reducing layer of the test specimen, and the static contact angle with the water droplet is measured 5 seconds later. The static contact angle 5 seconds after the water droplet is brought into contact with the matrix resin surface of the stuffiness-suppressing layer is measured in the same manner as the static contact angle measured immediately after the water droplet is brought into contact with the matrix resin surface of the stuffiness-suppressing layer. (6) (1) to (5) are performed on three specimens cut out from any three positions of the glove of each Example and Comparative Example, and for each specimen, the static contact angle immediately after bringing a water droplet into contact with the surface of the matrix resin of the stuffiness-suppressing layer and the static contact angle 5 seconds after bringing the water droplet into contact with the surface of the matrix resin of the stuffiness-suppressing layer are obtained, and then the static contact angle θ1 and the static contact angle θ2 are calculated by arithmetically averaging these values. Furthermore, for the gloves according to each Example and Comparative Example, the rate of change Rc of static contact angle was calculated by the following formula (1) using the values of static contact angle θ1 and static contact angle θ2 obtained as described above. The values of the static contact angle θ1, the static contact angle θ2, and the rate of change Rc of the static contact angle obtained for the gloves of each Example and Comparative Example are shown in Table 3 below.
[0097]
number
[0098] [Table 3]
[0099] (Moisture transfer to the innermost layer) The gloves of Examples 2 and 5 and the glove of Comparative Example 2 were examined for moisture permeability to the innermost layer. The moisture transfer to the innermost layer was investigated as follows. (1) From any part of the gloves according to Examples 2 and 5 and the glove according to Comparative Example 2, a part of the glove body or a part of the hem is cut out into a rectangular shape of a predetermined size (a rectangular shape of 3 cm x 5 cm) to obtain a test specimen. (2) The specimen is dried in an oven at 100°C for 30 minutes. (3) After drying, the specimen is attached to the semicircular portion of a jig with a semicircular cross section so that the innermost layer is on the outside, and then the mass of the jig to which the specimen is attached (hereinafter referred to as the initial mass W0) is measured. (4) Using a micropipette, place a 25 μL droplet of water in a glass dish, then bring the innermost layer of the test piece attached to the jig into contact with the 25 μL droplet of water, and remove the innermost layer of the test piece from the droplet within 1 second after contact. (5) Within 10 seconds after the innermost layer of the test specimen is removed from the water droplet, the mass of the jig to which the test specimen is attached (hereinafter referred to as the mass after contact with water W1) is measured. (6) (1) to (5) are carried out for three specimens cut out from three arbitrary positions of the gloves according to Examples 2 and 5 and the glove according to Comparative Example 2, and the initial mass W0 and the mass after contact with water W1 are obtained for each specimen. Then, using these values, the arithmetic mean value (W 0ave ) and the arithmetic mean value of the mass after contact with water (W 1ave ) is found. (7) W 1ave From W 0ave The amount of water transferred to the innermost layer of the specimen, W T Ask for. The moisture transfer amount W for the test specimens cut out from the gloves of Examples 2 and 5 and the test specimen cut out from the glove of Comparative Example 2 was T The results are shown in Table 4 below.
[0100] [Table 4]
[0101] From Table 4, the test specimens according to Examples 2 and 5, which have an innermost layer (stuffing suppression layer) containing cellulose particles, have a moisture transfer amount W T It is understood that the value of is high. From this, it can be seen that by including cellulose particles in the innermost layer, sweat produced by the wearer can be more easily transferred to the surface of the innermost layer (stuffiness-suppressing layer).
[0102] The gloves according to each Example, the gloves according to each Comparative Example, and the gloves according to Reference Example 1 were evaluated for stuffiness during wear and ease of removal after wear.
[0103] (Sweaty) The stuffiness during wear was evaluated as follows. (1) Eight panelists were asked to wear the gloves according to each Example, the gloves according to each Comparative Example, and the gloves according to Reference Example 1. (2) Eight panelists were asked to wear the gloves for each example for two hours. (3) After wearing each example of glove for 2 hours, each panelist is asked to evaluate the stuffiness of the gloves while wearing them according to the following criteria, and the arithmetic mean of the evaluation results is calculated. 4: You won't feel any sweating while wearing it. 3: I feel a little stuffy while wearing it, but it's not to the point where it's uncomfortable. 2: I feel stuffy while wearing it and it's a little uncomfortable. 1: I feel quite stuffy while wearing it, and it's extremely uncomfortable. The evaluation results for stuffiness are shown in Table 5 below.
[0104] (Easy to remove) The ease of removal after wearing was evaluated as follows. (1) Eight panelists were asked to wear the gloves according to each Example, the gloves according to each Comparative Example, and the gloves according to Reference Example 1. (2) Eight panelists were asked to wear the gloves for each example for two hours. (3) After wearing the gloves of each example for two hours, each panelist was asked to remove the gloves of each example from their hands and evaluate the ease of removal after donning them according to the following criteria, and the evaluation results were arithmetically averaged. 4: The gloves can be removed extremely easily with almost no feeling of them getting caught on the innermost layer. 3: Although there is some feeling of catching on the innermost layer, the gloves can be removed relatively easily. 2: There is a feeling of the innermost layer getting caught, making the gloves somewhat difficult to remove. 1: There is a great deal of snagging on the innermost layer, making it extremely difficult to remove the gloves. The evaluation results for ease of removal are shown in Table 5 below.
[0105] [Table 5]
[0106] As can be seen from Table 5, the gloves according to each example were evaluated as 3 points or more for stuffiness during wear and 3 points or more for ease of removal after wear, showing good results in all evaluation items. In particular, the gloves of Examples 2 to 4 were rated 4 points or higher for sweatiness while wearing and 4 points or higher for ease of removal after wearing, achieving extremely good results in all evaluation categories. In contrast, the gloves of Comparative Example 1, in which the amount of cellulose particles added was 5 parts by mass, received a score of 1 for stuffiness while wearing the gloves and a score of 2 for ease of removal after wearing, resulting in poor results in all evaluation items. Furthermore, the gloves of Comparative Example 2, which did not contain cellulose particles, received a score of 1 for stuffiness during wear and a score of 1 for ease of removal after wear, showing extremely poor results in all evaluation items. Furthermore, the glove of Reference Example 1, in which the innermost layer is a foam layer, received a score of 1 for both the evaluation of stuffiness during wear and the evaluation of ease of removal after wear, resulting in extremely poor results for both evaluation items. [Explanation of symbols]
[0107] 1: glove, 10: glove body, 20: hem, 30: resin layer, 40: stuffiness suppression layer, 40a: cellulose particles, 40A: convex portions, 40B: concave portions.
Claims
1. A glove body for covering a wearer's hand, the glove body has an innermost layer comprising a matrix resin and cellulose particles and constituting an inner surface of the glove; The cellulose particles are fibrous particles at least a part of which is exposed from the inner surface, and when the width of the particle is D and the length of the particle is L, L / D is 3.0 or more and 30 or less, the innermost layer contains 7 parts by mass or more and 45 parts by mass or less of the cellulose particles relative to 100 parts by mass of the matrix resin, and is formed as a non-foamed layer; The cellulose particles have an average particle size of 10 μm or more and 45 μm or less. gloves.
2. The innermost layer contains 8 parts by mass or more and 25 parts by mass or less of the cellulose particles per 100 parts by mass of the matrix resin. The glove of claim 1.
3. The static contact angle immediately after a water droplet is brought into contact with the surface of the innermost layer is defined as θ 1 year, The static contact angle θ is defined as 5 seconds after the water droplet contacts the surface of the innermost layer. 2 When The rate of change Rc of the static contact angle calculated by the following formula (1) is 20% or more and 90% or less. The glove according to claim 1 or 2. [Equation 1]
Citation Information
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