JP3132780B2 - Fiber napping sheet for golf gloves - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a napped fiber sheet for golf gloves which has a jet-black tone, is flexible and has an appropriate elasticity, and has excellent washing fastness.

[0002]

2. Description of the Related Art Hitherto, a number of methods have been proposed for producing dyed napped sheet-like articles comprising ultrafine polyamide fibers and an elastic polymer, and have a softer feel than those comprising polyester ultrafine fibers and an elastic polymer. It is used for various purposes because of its excellent color development, appearance and texture. Such napped sheet materials are also used in the field of golf gloves, and napped sheet materials for golf gloves have a high demand for not only a high-grade appearance and texture but also a feeling of grip when gripping a club. . Moreover, the use conditions are severer than those for general clothing. For such applications, there is a demand for a napped sheet-like material which is thin, has high flexibility, and is excellent in fastness and mechanical properties. With regard to the color of the napped sheet material for golf gloves, various colors are required from a light color to a dark color. In recent years, in particular, the napped sheet material dyed in jet black tone has been increasingly required.

[0003] In order to obtain a napped sheet material dyed in a dark color, the fineness of the ultrafine fibers is increased to enhance the color development.
A method has been proposed in which the fiber is soaked with carbon black or the like, post-treatment is performed to increase the amount of dye to be dyed and improve the fastness, or a combination of these methods. The inventor of the present invention discloses a method for dyeing a nap sheet comprising polyamide ultrafine fibers and an elastic polymer in a dark color in Japanese Unexamined Patent Publication (Kokai) No. 3-1103082, which discloses a method for producing a suede-like sheet having excellent dyeing fastness. This is proposed in Japanese Patent Application Laid-Open No. 2-242980.

[0004]

The relatively light-colored ones can satisfy the above-mentioned requirements for the napped sheet for golf gloves, but the dark-colored ones, especially jet-black, can meet these requirements. A product satisfying all the characteristics was not obtained. In other words, if the fineness of the ultrafine fibers is increased, the texture and appearance are inferior, and if the amount of carbon black or the amount of dye dyed is increased, the texture becomes harder, or the robustness and physical properties are reduced. A nap sheet having a good appearance and a good texture has not been obtained. An object of the present invention is to provide a napped sheet for a jet-black golf glove having excellent appearance and texture and sufficient durability, which solves these problems.

[0005]

According to the present invention, 5 to 10% by weight is provided.
A dyed sheet comprising a bundle of polyamide ultrafine fibers having an average fineness of 0.005 to 0.01 denier containing carbon black and an elastic polymer, and having napped on at least one side, wherein Fiber apparent density 0.25
A fiber napped sheet for golf gloves having a K / S value of 25 or more and a washing fastness of 3 or more in the range of 0.30 g / cm ^{3 to} 0.30 g / cm ³ .

The ultrafine fibers constituting the fiber napped sheet of the present invention are bundles of polyamide ultrafine fibers containing 5 to 10% by weight of carbon black and having an average fineness of 0.005 to 0.01 denier. Such bundled fibers remove the sea component from the ultrafine fiber-generating fiber having a spinnable polyamide as an island component and a polymer having a different solubility or degradability with respect to a solvent or the like from the polyamide as a sea component. Obtained by:

The polyamide constituting the island component is, for example,
6-nylon, 66-nylon, 610-nylon, 1
1-nylon, 12-nylon, 26-nylon, 21
It is at least one kind of polyamide selected from 0-nylon, 410-nylon, 76-nylon, and other spinnable polyamides having an aromatic ring. 5 to polyamide
10% by weight of carbon black are added. 5% added
If the amount is less, dyeing with a large amount of dye must be carried out in order to obtain sufficient blackness, and only those having poor texture and fastness can be obtained. On the other hand, if it is more than 10%, the strength of the polyamide ultrafine fiber is reduced, and required physical properties cannot be obtained. The method of adding carbon black to polyamide is as follows: a predetermined amount of carbon black is kneaded in the polyamide resin prior to spinning, or a master pellet in which carbon black is kneaded at a high concentration is prepared, and spinning is performed during spinning. For example, mixing is performed so that the total amount of carbon black becomes a predetermined amount. In addition to carbon black, a heat stability improver for a resin can be added to the polyamide.

The polymer constituting the sea component is a polymer having different solubility in a solvent from polyamide and having low affinity, such as polyethylene, polypropylene, ethylene propylene copolymer, ethylene vinyl acetate copolymer, and polystyrene. And at least one polymer selected from polymers such as styrene-acryl copolymers and styrene-ethylene copolymers.

The average fineness of the ultrafine fibers of the ultrafine fiber bundle is 0.
005 to 0.01 dr. If it is thinner than 0.005dr, the color developability is poor,
Further, the strength of the ultrafine fibers is greatly reduced by the addition of carbon black, and the physical properties of the napped sheet are likely to be low. When the average single fineness is larger than 0.01 dr, the color development is excellent, but the appearance of the raised hair becomes rough and inferior in luxury.

[0010] The ultrafine fiber-generating fiber is prepared by mixing a chip of an island component polyamide and a polymer of a sea component, and extruding a mixed melt melted in the same melting system from a die, and spinning.
It is obtained by a method of spinning in a sea-island state by repeating the split integration by melting in a separate melting system or by mixing the polyamide into the sea component from a plurality of spinnerets at the spinneret portion, and spinning in a sea-island shape. In order to obtain an ultrafine fiber bundle of 0.01 dr, a method of melt spinning with the same melting system is excellent. The single fineness of the ultrafine fiber is adjusted to the desired thickness by adjusting the melt viscosity difference between the polyamide and the sea component at the spinning temperature to change the number of islands, or by changing the fineness of the ultrafine fiber generating fiber, the sea-island ratio, etc. Can be. In order to increase the fiber density in the sheet, the weight ratio of the island component is desirably 40% or more. The ultrafine fiber-generating fiber can be processed to a fineness of 1
~ 15 denier fiber.

The fibers are defibrated with a card, formed into a random web or a cross-wrap web through a web, and laminated to a desired weight and thickness. Then, a known method
A dollar punch or a water entanglement process is performed to obtain an entangled nonwoven fabric. The entanglement treatment is desirably performed sufficiently to enhance mechanical properties such as tear strength of the product. The obtained entangled nonwoven fabric is further subjected to hot pressing, if necessary,
The apparent density of microfibers in the napped sheet of the final product is 0.
The apparent density is adjusted to be 25 to 0.30 g / cm ³ .

Next, the fiber entangled nonwoven fabric is impregnated with the elastic polymer liquid and solidified. The elastic polymer liquid impregnated in the fiber entangled nonwoven fabric is a solution or dispersion of an elastic polymer mainly composed of polyurethane. As the polyurethane used for impregnation,
Conventionally known ones can be used, but in order to obtain a product with a soft texture, it is desirable that the polyurethane be a polyurethane having a dry stress at 100% elongation of 0.20 to 1.00 kg / mm ² . The polymer for impregnation may be further blended with an additive selected from a colorant, a coagulation regulator, a mold release agent, a plasticizer, a stabilizer, an antioxidant, a light stabilizer, and the like, if necessary. Make it a composition liquid. In order to obtain a jet-black nap sheet, it is preferable to add 1% or more, preferably 2 to 7% of carbon black.

The fiber-entangled nonwoven fabric is impregnated with the above-mentioned impregnating composition solution, treated with a polymer non-solvent, wet-coagulated, washed and dried if necessary. Next, by treating the polyamide and the elastic polymer impregnated in the substrate with a treatment liquid which is a non-solvent for the elastic polymer impregnated in the base and a solvent or a decomposer for the sea component of the ultrafine fiber generating fiber, The fiber-generating fiber is modified into a polyamide ultrafine fiber bundle to obtain a fibrous base made of an ultrafine fiber entangled nonwoven fabric and a polymer mainly composed of polyurethane.

Next, the fibrous base material is adjusted to a desired thickness by slicing, buffing, or the like, and at least one surface is formed with a fiber nap surface mainly composed of ultrafine fibers. The method of forming the fiber nap can be performed by an existing napping method such as buffing with sandpaper, napping or the like. Sheet thickness depends on the product after dyeing
It is preferably in the range of 0.35 to 1.60 mm. According to the experience of the present inventors, when used as a golf glove, if the thickness is less than 0.35 mm, the cushioning effect is not sufficient and hands may be hurt during use. On the other hand, if the thickness is larger than 0.6 mm, the cushioning effect is sufficient, but the feeling is too thick and the fit is poor.

The fiber raised sheet of the present invention has an apparent density of ultrafine fibers in the sheet in the range of 0.25 to 0.30 g / cm ³ . If the apparent density is less than 0.25 g / cm ³ , the sheet will be inferior when filled with gloves, and its physical properties such as tear strength will also be poor. When the content of the elastic polymer is increased to enhance the sense of fulfillment, rubber-like resilience is produced, and when the thickness is increased to increase the strength, the thickness becomes thicker, the fit is reduced, and the sense of quality is lacking. If the apparent density is greater than 0.30 g / cm ³ , the texture becomes paper-like, and the quality is also inferior.

According to the knowledge of the present inventors, when used as a golf glove, it is necessary that the tear strength be 2.5 kg or more regardless of the thickness of the sheet. If the tearing strength is less than 2.5 kg, it is likely to tear during use, resulting in a low commercial value. If the apparent density of the microfibers in the sheet is in the range of 0.25 to 0.30 g / cm ³ , the transition is entangled even when a relatively low-strength polyamide microfiber containing 5 to 10% of carbon black is used. By adjusting the state and the content of the elastic polymer, the tearing strength of the napped sheet can be 2.5 kg or more.

The obtained napped fibrous base material is dyed by a conventionally known method such as wins and dash lines so that the K / S value of the napped sheet material after dyeing is 25 or more. Stain. The K / S value is a numerical value representing the color density obtained from the reflectance (R) by the Kubelker-Munk function, and is calculated from the following equation. K / S = (1−R) ² / 2R The larger the K / S value, the darker the color. If the K / S value is lower than 25, the color becomes grayish and cannot be called jet-black.

As the dye to be used, polyamide ultrafine fibers and polyurethane are dyed with an acid dye, a gold-containing complex dye or the like, and it is preferable to use a 2: 1 type metal complex salt dye.
Prior to dyeing with a 2: 1 type metal complex dye, it is preferable to pre-dye with a dye which does not decrease the washing fastness, such as a sulfur dye or a vat dye. When dyeing,
The K / S value can be easily increased to 25 or more by increasing the dye concentration of the dyeing liquor. However, since the washing fastness tends to be low, it is preferable to dye at a dye concentration of 3% or less. It is also preferable to brush the dyed sheet in a wet state for improving the fastness.

The dyed napped fibrous base material is subjected to a light-resistant treatment, a kneading, a softening treatment, a finishing treatment such as brushing, etc., as required, to obtain a fibrous napped sheet product. The fiber napped sheet of the present invention has an extremely good appearance, texture, surface feel, and uniformity of fluff, and has excellent fit and durability when used as a golf glove, and is full of luxury.

[0020]

EXAMPLES Next, the practice of the present invention will be described specifically with reference to examples, but the present invention is not limited to these examples. The parts and percentages in the examples relate to weight unless otherwise specified.

Example 1 50 parts of 6-nylon containing 7.0% of carbon black,
50 parts of polyethylene were mixed, melted and extruded to obtain a multicomponent fiber having an island component of nylon and a sea component of polyethylene, an average number of islands in a cross section of 300 and a fineness of 10 denier. The fiber was drawn, crimped, and cut into short fibers having a fiber length of 51 mm and a fineness of 4.3 denier. The average fineness of the island component of this fiber is 0.00
7 denier (calculated value). The fibers were opened with a card, then formed into a random web, subjected to needle punching to form an entangled nonwoven fabric, heated to 125 ° C. and roller pressed to obtain a nonwoven fabric having an apparent density of 0.40 g / cm ³ and a basis weight of 780 g / m ² . This nonwoven fabric was impregnated with a composition solution of 12.5 parts of a polyether-based polyurethane composition, 0.5 part of a coagulation regulator, 1.0 part of carbon black, and 86.0 parts of dimethylformamide, coagulated, washed with water, and then dissolved and removed of polyethylene in toluene. 1.34m thick
m, and a sheet-like substrate having an apparent density of 0.40 g / cm ³ was obtained. The polyurethane ratio in the sheet-like substrate was 27.3%, and the apparent density of the fiber component was 0.29 g / cm ³ . This sheet-shaped substrate is divided into two in the middle of the thickness, and the divided surface is buffed with sandpaper to a thickness of 0.5 mm, and the surface at the time of solidification is treated with an emery buffing machine to form a napped surface, Staining was performed under the following conditions.

Dye: Assacidol Pier Blue S-GL
(Asahi Chemical) 3% owf Reducing agent: Sodium hydrosulfide 6% Dyeing solution temperature: 80 ° C. Immersion time: 30 seconds Squeezing rate: 100% The fiber napping sheet is treated in a dye solution, squeezed, and then air-oxidized. After washing with water and further oxidizing with an oxidizing solution having the following composition at room temperature for 30 minutes, a neutralizing treatment was performed. Oxidizing agent: Asahioxy 50 (Asahi Chemical) 0.5% Acetic acid 1% The fiber napping sheet is washed with water, and the dye adhering to the surface is removed by brushing, and then the following 2: 1 type metal complex dye is added. And stained. Dye: Lanyl Blue BW (Sumitomo Chemical) 1.2% Karajan Black 2RL (Nippon Kayaku) 1.0% Leveling agent: 1% After dyeing, soaping, washing with water, drying, hair styling and thickness 0.5m
m, a fiber nap sheet having a basis weight of 210 g / m ² was obtained. Table 1 shows the quality of the obtained fiber nap sheet.

COMPARATIVE EXAMPLE 1 Example 6 containing 7.0% of carbon black
A multi-component fiber having an average number of islands of 300 was obtained in the same manner by using 6-nylon containing 11.0% of carbon black instead of nylon, but it lacked spinning stability.
Thereafter, the same treatment as in Example 1 was carried out to obtain a thickness of 0.5 mm and a basis weight of 210 g /
An m ² fiber napped sheet was obtained. Table 1 shows the quality of the obtained fiber nap sheet.

Comparative Example 2 A multi-component fiber having an average number of islands of 300 was prepared in the same manner as in Example 1, except that 6-nylon containing 3.0% carbon black was used instead of 6-nylon containing 7.0% carbon black. Obtained. Thereafter, the same processing as in Example 1 was performed to obtain a thickness of 0.
5 mm, a fiber nap sheet having a basis weight of 210 g / m ² was obtained. However, for dyeing with a 2: 1 metal complex dye, the dye composition was 5.0% for both Raneal Blue BW and Karajan Black 2RL. Table 1 shows the quality of the obtained fiber nap sheet.

Comparative Example 3 In Example 1, the spinning conditions were changed to change the average number of islands to 600.
Was obtained. The fiber is stretched, crimped, and cut to obtain a fineness of 4.3 denier, and the average fineness of the island component of the short fiber is 0.003.
5 denier (calculated value). Thereafter, the same treatment as in Example 1 was carried out to obtain a fibrous napped sheet having a thickness of 0.5 mm and a basis weight of 210 g / m ² . However, since the coloring property of the ultrafine fibers is low, 2: 1
Dyeing with metal complex dyes is based on the runel blue B
Both W and Karajan Black 2RL were 5.0%. Table 1 shows the quality of the obtained fiber nap sheet.

Comparative Example 4 An entangled non-woven fabric was prepared using the short fibers of Example 1, heated to 125 ° C. and roller pressed to an apparent density of 0.30 g / cm ³ and a basis weight of 600.
g / m ² . This nonwoven fabric was impregnated with the same composition liquid as in Example 1, coagulated and washed with water, and then the polyethylene was dissolved and removed in toluene to give a thickness of 1.35 mm and an apparent density of 0.35 g /
A sheet base material of cm ³ was obtained. The polyurethane ratio in the sheet-shaped substrate is 36.8%, and the apparent density of the fiber component is 0.22 g.
/ Cm ³ . Thereafter, the same processing as in Example 1 was performed to obtain a thickness of 0.5
A fiber napped sheet having a mm and a basis weight of 180 g / m ² was obtained. Table 1 shows the quality of the obtained fiber nap sheet.

[0027]

[Table 1]

[0028]

The fibrous napped sheet of the present invention has a high-grade appearance and texture, and also has an excellent grip when gripping a club. Moreover, it is a jet-black fibrous napped sheet with excellent durability, such as robustness and mechanical properties, without impairing the moist touch of the polyamide ultra-fine fiber. A golf glove full of unprecedented levels of luxury can be provided.

Continued on the front page (51) Int.Cl. ⁷ Identification code FI D06M 13/07 D06M 13/07 15/568 15/568 // D01F 6/60 321 D01F 6/60 321C 6/90 301 6/90 301 D06C 11/00 D06C 11/00 Z D06M 15/568 9/02 C (58) Field surveyed (Int. Cl. ⁷ , DB name) D06N 7/00 A63B 71/14 C09C 1/48 D01F 8/12 D03D 25 / 00 102 D06M 13/07 D06M 15/568 D01F 6/60 321 D01F 6/90 301 D06C 11/00

Claims (1)

(57) [Claims] 1. A dyed sheet comprising a bundle of ultrafine polyamide fibers having an average fineness of 0.005 to 0.01 denier containing 5 to 10% by weight of carbon black and an elastic polymer, and having at least one surface having nap. The apparent density of the fibers in the sheet is in the range of 0.25 to 0.30 g / cm ³ , the K / S value of the sheet is 25 or more, and the washing fastness is 3
A fiber napped sheet for golf gloves of grade or higher.