JP2002266220A - Nonwoven fabric and articles of clothing using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a nonwoven fabric having excellent flexibility, drape and surface qualities which have not conventionally existed, in more detail, a nonwoven fabric suitable for outers such as blouson, windbreaker, coat, etc., inners such as underwear, etc., the whole clothes such as uniforms, etc., and clothing materials such as quilt cover, curtain, bag, etc., and to provide a method for producing the same. SOLUTION: In order to solve the subject, the following constitution is adopted. (1) This nonwoven fabric is characterized in that the nonwoven fabric comprises a conjugate fiber group composed of an incompatible polymer of two or more components as constitutent elements and has crimp. (2) The clothes are obtained by using the nonwoven fabric. (3) The outers obtained by using the nonwoven fabric. (4) The inners obtained by using the nonwoven fabric. (5) The clothing materials obtained by using the nonwoven fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a nonwoven fabric having excellent flexibility, drapability and surface quality, and more particularly to outerwear such as blousons, windbreakers and coats, innerwear such as underwear, and uniforms. The present invention relates to a nonwoven fabric suitable for clothing such as futons, clothing materials such as futon covers, curtains, and bags, and a method for producing the same.

[0002]

2. Description of the Related Art In recent years, nonwoven fabrics have been rapidly spreading due to the low cost merit derived from their high productivity.
Still the main use is in sanitary materials such as disposable diapers and sanitary napkins. Although some are used for clothing materials such as interlining and base fabrics such as disposable uniforms and artificial leather, they are not widely used for general clothing.
The reason is that the nonwoven fabric does not have the properties of a woven or knitted fabric when viewed as a material for clothing. For example, nonwoven fabrics are inferior to woven or knitted fabrics in terms of flexibility, drapability, surface quality, and the like.

[0003] In order to improve the flexibility and drapability of the drawback, attempts have been made to reduce the single-fiber fineness to, for example, 0.6 dtex or less, but when the single-fiber fineness is reduced,
There were problems such as the spinnability being remarkably reduced and the operability being deteriorated, and the obtained product was not satisfactory for use in clothing.

[0004]

SUMMARY OF THE INVENTION In view of the background of the prior art, the present invention relates to a nonwoven fabric having excellent flexibility, drapability and surface quality, and more specifically, outerwear such as blousons, windbreakers and coats. The present invention relates to non-woven fabrics suitable for clothing such as innerwear such as clothing, underwear, uniforms, etc. and clothing materials such as futon covers, curtains, and bags, and a method for producing the same.

[0005]

The present invention adopts the following constitution in order to solve the above-mentioned problems. "(1) It is characterized by containing a composite fiber group composed of two or more incompatible polymers as a constituent element and having crimp.

(2) Clothing articles using the nonwoven fabric according to the above (1).

(3) Outer materials using the nonwoven fabric described in (1) above.

(4) Inners using the nonwoven fabric according to (1).

(5) Clothing materials using the nonwoven fabric according to (1). "

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to the above-mentioned objects, that is, a nonwoven fabric excellent in flexibility, drapability and surface quality, more specifically, outerwear such as blousons, windbreakers and coats, innerwear such as underwear and uniforms. Nonwoven fabrics suitable for clothing, such as futon covers, curtains, bags, etc., have been eagerly studied, and nonwoven fabrics containing a composite fiber group consisting of two or more incompatible polymers as a constituent element On the other hand, when a crimp caused by a difference in shrinkage and / or dissolution caused by a processing agent treatment containing an acid and / or an organic solvent and a crimp caused by a difference in shrinkage caused by a heat treatment were developed, these problems were all exhibited. It is determined that the problem is solved.

The nonwoven fabric referred to in the present invention contains, as a constituent element, a composite fiber group comprising two or more incompatible polymers. Further, natural fibers such as cotton, hemp, animal hair and silk may be contained. For forming into a nonwoven fabric, a web containing a composite fiber group composed of two or more incompatible polymers as a constituent element may be treated by heat bonding, resin bonding, needle punching, high-pressure liquid flow, or the like. Two or more types of webs may be bonded. In addition, it is preferably a high-pressure liquid flow treatment in terms of texture, and as the high-pressure liquid flow treatment,
What is necessary is just to follow the usual method using a water jet processing machine,
The liquid used as the liquid stream is preferably water or warm water that is easy to handle.

The composite fiber group referred to in the present invention is composed of two or more incompatible polymers, and is preferably nylon-based fiber, polyester-based fiber, or hydrocarbon-based fiber in terms of productivity, dyeability, texture, quality and the like. It contains at least one selected from fibers, polylactic acid-based fibers, polyphenylene sulfide-based fibers, acrylic fibers, and the like, and more preferably nylon 6 fibers, nylon 6,6 fibers, polyethylene terephthalate fibers, and polytrimethylene terephthalate. It contains at least one selected from fibers, polybutylene terephthalate fibers, polyethylene fibers, polypropylene fibers, polylactic acid-based fibers, and polyphenylene sulfide-based fibers.

The conjugate fiber group referred to in the present invention is a short fiber group and / or a long fiber group, and a long fiber group is preferable in terms of productivity.

The term "composite fiber group comprising two or more incompatible polymers" refers to a composite fiber composed of two or more different single component yarns or a multicomponent single yarn. Among them, it is particularly preferable that a multi-component split single yarn is constituted by split yarns, since a nonwoven fabric excellent in flexibility, drapability and surface quality can be obtained.

In the present invention, a nonwoven fabric containing a composite fiber group composed of two or more incompatible polymers as components is treated with a processing agent containing acids. Here, as the acids, aliphatic carboxylic acids are preferably used regardless of whether they are monobasic acids or polybasic acids. Further, in view of the effects of shrinkage and / or dissolution, aliphatic monocarboxylic acids having 1 to 5 carbon atoms, such as formic acid, acetic acid, propionic acid, and lactic acid,
Aliphatic dicarboxylic acids having 2 to 8 carbon atoms, more preferably aliphatic dicarboxylic acids having 2 to 8 carbon atoms, such as adipic acid, glutaric acid, succinic acid, oxalic acid, pimelic acid, fumaric acid, and maleic acid , Malonic acid, mesaconic acid, malic acid and the like. Further, it may be an acid anhydride of the dicarboxylic acids or a mixture of two or more kinds.

In the present invention, a nonwoven fabric containing, as a constituent, a composite fiber group composed of two or more incompatible polymers is treated with a processing agent containing an organic solvent. Here, the organic solvents are preferably hydroxyl-containing aromatic compounds such as phenol and benzyl alcohol in terms of shrinkage and / or dissolution effects, dichloromethane, 1,2-dichloroethane, tetrachloroethylene, 1,1,2,2- Halogen-substituted hydrocarbons such as tetrachloroethane,
More preferred are hydroxyl group-containing aromatic compounds such as phenol and benzyl alcohol. Further, a mixture of two or more kinds may be used.

The treatment method using acids and organic solvents is as follows.

In the case of acids, it may be provided by impregnating, spraying, coating, or the like with an acid processing agent diluted with a solvent such as water. Also, immersion treatment may be used. The concentration of the diluent, the treatment temperature after application, the treatment time, the dry heat, the wet heat, and other conditions are not particularly limited, but preferably the treatment temperature is 70 to 120 ° C. with wet heat, and the treatment time is 1 to 1. By controlling within a range of 20 minutes, shrinkage and / or dissolution can be adjusted to obtain flexibility, drapability, and surface quality that meet finishing goals.

In the case of an organic solvent, it may be applied by impregnating, spraying, or applying an emulsified processing agent for the organic solvent. Also, immersion treatment may be used. The conditions such as the concentration of the emulsion, the processing temperature after application, the processing time, the dry heat, the wet heat, etc. are not limited at all, but preferably the processing temperature is 70 to 12
By controlling the temperature within the range of 0 ° C. and the processing time of 1 to 20 minutes, the shrinkage and / or dissolution can be adjusted to obtain the flexibility, drapability, and surface quality suitable for the finishing target.

In the processing agent treatment method of the present invention, a thickener such as a sizing agent may be added for the purpose of adjusting the viscosity of the processing agent. Before the processing agent treatment, dyeing may be performed. The dyeing method may be a conventional method using a jet dyeing machine or a package dyeing machine.

Further, by the treatment with an acid or an organic solvent, a splittable composite single yarn comprising two or more incompatible polymers contained as constituent elements of the nonwoven fabric can be split.

In the present invention, a non-woven fabric containing a composite fiber group composed of two or more incompatible polymers as a component is subjected to a heat treatment. Here, the heat treatment method may be a dry heat treatment using a pin tenter or the like, a wet heat treatment using a continuous steamer or the like. However, if the processing temperature is increased and the processing time is increased, molten balls of the nonwoven fabric components are generated, and the quality is remarkably deteriorated, or the generated molten balls may fall and contaminate the processing apparatus. Therefore, when the processing temperature is set higher than the melting point of the nonwoven fabric component, the processing time may be shortened. Conditions such as processing temperature, processing time, dry heat, moist heat are not limited at all,
Preferably, the processing temperature is controlled in the range of 90 to 200 ° C. by dry heat and the processing time is 15 seconds to 10 minutes to adjust the shrinkage to obtain the flexibility, drapability and surface quality that match the finishing target. Can be. Further, when performing the heat treatment, by applying overfeed or the like to suppress the tension in at least one of the vertical direction and the horizontal direction of the nonwoven fabric, it is possible to further improve flexibility, drapability, and surface quality. it can. In addition, dyeing may be performed before the heat treatment. The dyeing method may be a conventional method using a jet dyeing machine or a package dyeing machine.

The crimp referred to in the present invention is manifested in the contracted and / or dissolved fibers themselves due to the contraction and / or dissolution of the fibers constituting the nonwoven fabric due to the processing agent treatment, and the contraction of the fibers constituting the nonwoven fabric due to the heat treatment. And / or consequently a crimp developed in other constituent fibers. Due to the developed crimp, the obtained nonwoven fabric becomes excellent in flexibility, drapability and surface quality.

The nonwoven fabric obtained by the present invention can be subjected to functional processing such as antibacterial processing, deodorizing processing, flame retarding processing, water repellent processing, oil repellent processing, antifouling processing, moisture absorption processing and antistatic processing. . As a method, after impregnating the nonwoven fabric with the working fluid,
Conventional methods such as a method of squeezing uniformly with a mangle roll or the like and passing through a dry-cure process, or a method of adjusting the working fluid to an appropriate viscosity, applying it with a knife coater, gravure roll coater, printing, or the like, followed by heat treatment It is good to follow. Further, another nonwoven fabric or a woven or knitted fabric or a laminate sheet can be bonded or thermally bonded to the nonwoven fabric obtained by the present invention.

The nonwoven fabric of the present invention includes outerwear such as blousons, windbreakers and coats, innerwear such as underwear, clothing such as uniforms, and futon covers;
It is suitably used for clothing materials such as curtains and bags.

[0026]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. The quality evaluation in the examples is performed by tactile judgment and visual judgment, and the judgment criteria are as follows. <Flexibility> ：: Flexibility is more than base cloth ：: Flexibility is equivalent to base cloth ×: Flexibility is lower than base cloth <Drapability> ：: Drapability is more than base cloth ○ : Drapability is equivalent to the base cloth. ×: Drapability is equal to or less than the base cloth. <Surface quality> ：: Surface quality is equal to or higher than the base cloth. ：: Surface quality is equivalent to the base cloth. X: Surface quality is equal. (Example 1) [Preparation of base cloth] Nylon 6 and polyethylene terephthalate were melt-spun at a ratio of 1: 1 by volume, and were split type conjugate long fibers having an average fineness of 1.1 decitex. The formed web having a basis weight of 70 g / m ² was sprayed with three injection nozzles each having a plurality of injection holes having a hole diameter of 0.10 mm and a hole interval of 1.0 mm.
Provided at the stage, 30 kg / cm ^{2 in} the first stage, 60 kg / c in the middle stage
m ^2, by injecting water pressure of the subsequent 90 kg / cm ² and subjected to high pressure liquid stream treatment, was created based fabric performs segmentation and entanglement of the constituent fibers of the web. [Acid treatment] The base cloth was impregnated with a treating agent of 40 parts by weight of malonic acid and 60 parts by weight of water, and squeezed with a 100% pickup.
After performing a wet heat treatment at 105 ° C. for 10 minutes in a continuous steamer, washing and drying were performed to obtain a target nonwoven fabric. [Quality evaluation] The obtained nonwoven fabric has flexibility, drapability,
The surface quality was all satisfied. (Example 2) [Preparation of base cloth] The same base cloth as in Example 1 was used. [Organic solvent treatment] The base fabric is impregnated with benzyl alcohol, squeezed with a 100% pickup, subjected to a moist heat treatment at 105 ° C for 20 minutes in a continuous steamer, and then washed and dried to obtain a desired nonwoven fabric. Was. [Quality evaluation] The obtained nonwoven fabric has flexibility, drapability,
The surface quality was all satisfied. (Example 3) [Preparation of base cloth] A base cloth was prepared in the same manner as in Example 1 except that polyethylene terephthalate and polyethylene were used. [Heat Treatment] The base fabric is subjected to dry heat treatment at 120 ° C. for 5 minutes in a pin tenter under the condition that overfeed is applied in the vertical direction and the finished width is 15% wider than the inserted width in the horizontal direction. A non-woven fabric was obtained. [Quality evaluation] The obtained nonwoven fabric has flexibility, drapability,
The surface quality was all satisfied. (Comparative Example 1) [Preparation of base fabric] Nylon 6 was melt-spun and had an average fineness of 1.1 decitex.
The Webb m ^2, pore diameter 0.10 mm, hole spacing 1.0m
injection nozzle having a plurality of m injection holes in three stages,
First 30 kg / cm ² , Middle 60 kg / cm ² , Last 90
Water at a pressure of kg / cm ² was sprayed to perform a high-pressure liquid flow treatment, and the constituent fibers of the web were entangled to prepare a base fabric. [Acid treatment] The base fabric was treated in the same manner as in Example 1 to obtain a desired nonwoven fabric. [Quality evaluation] The obtained nonwoven fabric has flexibility, drapability,
Not all surface qualities were satisfied. (Comparative Example 2) [Preparation of base cloth] A base cloth was prepared in the same manner as in Comparative Example 1 except that polyethylene terephthalate was used. [Organic solvent treatment] The base fabric was treated in the same manner as in Example 2 to obtain a desired nonwoven fabric. [Quality evaluation] The obtained nonwoven fabric has flexibility, drapability,
Not all surface qualities were satisfied. (Comparative Example 3) [Preparation of base cloth] A base cloth was prepared in the same manner as in Comparative Example 1 except that polyethylene was used. [Heat treatment] The base fabric was treated in the same manner as in Example 3 to obtain a desired nonwoven fabric. [Quality evaluation] The obtained nonwoven fabric has flexibility, drapability,
Not all surface qualities were satisfied.

[0027]

[Table 1]

[0028]

According to the present invention, flexibility that has never existed before,
Non-woven fabric with excellent drapability and surface quality; more specifically, outerwear such as blousons, windbreakers, coats, innerwear such as underwear, uniforms, etc .; and clothing materials such as duvet covers, curtains, bags, etc. And a method for producing the same.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D06C 7/00 D06C 7/00 Z D06M 11/00 D06M 11/00 // D06M 101: 16 101: 16 101 : 20 101: 20 101: 32 101: 32 101: 34 101: 34 9/06 9/14 (72) Inventor Koichi Saito 1-1-1, Sonoyama, Otsu-shi, Shiga F Terms (Reference) 3B029 HA03 HB00 3B154 AA07 AA08 AA09 AA17 AB22 BA31 BA39 BB12 CA50 DA09 DA30 4L031 AA14 AA18 AA20 AB09 AB26 AB34 BA33 CA08 CA09 CA15 DA01 DA05 DA06 4L041 AA07 BA04 BA05 BD11 BD20 CA06 A21A01 DD01 AA26 AA27 AB03 AB09 BA04 CB01 CB10 CC01

Claims (13)

[Claims] 1. A nonwoven fabric comprising a composite fiber group comprising two or more incompatible polymers as a constituent element and having a crimp. 2. The composite fiber group comprises at least one selected from the group consisting of nylon fibers, polyester fibers, polyethylene fibers, polypropylene fibers, polylactic acid fibers and polyphenylene sulfide fibers. The nonwoven fabric according to claim 1, 3. The nonwoven fabric according to claim 1, wherein said composite fiber group is a long fiber group. 4. The nonwoven fabric according to claim 1, wherein said group of composite fibers is obtained by dividing a splittable composite single yarn. 5. A method for producing a nonwoven fabric, comprising treating a nonwoven fabric containing a composite fiber group comprising two or more incompatible polymers as a constituent with a processing agent containing acids. 6. The method for producing a nonwoven fabric according to claim 5, wherein said acids are aliphatic dicarboxylic acids having 2 to 8 carbon atoms. 7. A method for producing a nonwoven fabric, comprising treating a nonwoven fabric containing a composite fiber group comprising two or more incompatible polymers as a constituent with a processing agent containing an organic solvent. 8. The method for producing a nonwoven fabric according to claim 7, wherein said organic solvent is a hydroxyl group-containing aromatic compound and / or a halogen-substituted hydrocarbon. 9. A method for producing a nonwoven fabric, comprising heating a nonwoven fabric containing a composite fiber group comprising two or more incompatible polymers as a constituent element. 10. Clothes using the nonwoven fabric according to claim 1. 11. Outerwear using the nonwoven fabric according to any one of claims 1 to 5. 12. An inner using the nonwoven fabric according to any one of claims 1 to 5. 13. Clothing materials using the nonwoven fabric according to any one of claims 1 to 5.