JP2008133558A - Shaped nylon cloth and shaping method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shaped nylon cloth having excellent shaping workability of a nylon fiber cloth and shape retention of the shaped nylon cloth, especially excellent shape retention in washing, and having excellent workability, and to provide a shaping method for the nylon cloth. <P>SOLUTION: A nylon fiber cloth containing ≥50 wt.% nylon fiber is subjected to a water-repelling treatment and then a shaping work to obtain a shaped nylon cloth having excellent shaping workability of the nylon fiber cloth and washing resistance. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a nylon-shaped processed cloth containing 50% by weight or more of nylon fibers and a method for forming a nylon-shaped processed cloth.

  As a conventional method for shaping nylon fiber cloth, a method for shaping nylon fiber cloth by a method using a shaping jig or a wrinkle processing machine, a manual kneading method, a method of binding the fabric with yarn, etc. Alternatively, there is a processing method in which the surface of a nylon fiber cloth is coated with a film and then shaped (for example, Patent Document 1).

  However, in the method of shaping the nylon fiber cloth by the method using a shaping jig or wrinkle processing machine, the hand kneading method, the method of binding the cloth with yarn, etc. The shapeability and the shape maintenance after the shaping process, particularly the washing resistance at the time of washing were not sufficient. Further, the method described in JP-T-2005-500446 has a problem that the work process is complicated, the productivity is poor, and the processing cost is increased. For this reason, there has been a strong demand for the emergence of a nylon shaped cloth and a shaping method that are excellent in the formability to the nylon fiber cloth and the wash resistance of the shaped cloth.

Special Table 2005-500446

  The object of the present invention is to form nylon to a nylon fiber cloth and to maintain the shape of the nylon shaped cloth after shaping, in particular, to maintain the shape during washing and to improve the workability. An object of the present invention is to provide a shape cloth and a method for forming the shape.

The present invention provides a nylon forming excellent in formability and washing resistance to a nylon fiber cloth by subjecting a nylon fiber cloth containing 50% by weight or more of a nylon fiber to a water repellent treatment, followed by a shaping process. It is characterized in that a work cloth can be obtained.
The nylon shaped cloth of the present invention is a nylon fiber cloth that makes use of the characteristics of nylon more effectively when a nylon fiber cloth containing 90% by weight or more of nylon fiber is subjected to water repellency treatment and then shaped. It is preferable because a nylon shaped cloth having excellent shapeability and shape retention after shaping, particularly shape retention during washing and excellent workability can be obtained.
In the shaping method of the present invention, it is preferable that the shaping jig is heated to 50 to 220 ° C., and the shaping is performed while the cloth is brought into contact with the shaping jig.
Moreover, when the shaping method of this invention prepares the dry shaping machine which has a roll as a shaping jig, or the wet shaping machine which has a vapor | steam, it will be preferable when better shaping property is obtained.
Furthermore, in the shaping method of the present invention, after shaping the nylon fiber cloth, adding a step of leaving at 70 to 200 ° C. and the time for 30 seconds or longer under the shaping process, further better shaping And shape retention after shaping are preferable.

  Nylon fiber cloth containing 50% by weight or more of nylon fiber is subjected to water repellent treatment and then subjected to shaping, so that the nylon fiber cloth has excellent shapeability and wash resistance. Can be obtained.

  The present invention provides a nylon forming excellent in formability and washing resistance to nylon fiber cloth by subjecting a nylon fiber cloth containing 50% by weight or more of nylon fiber to a water repellent treatment and then applying a shaping process. It is characterized in that a work cloth can be obtained.

In the present invention, nylon fiber refers to nylon 6 and nylon 66.
Nylon fibers may be used alone or in combination as filaments or staples.
In the present invention, the nylon fiber cloth refers to a cloth-like structure formed using nylon fibers, for example, a cloth formed by operations such as weaving or knitting using nylon fibers, or a nonwoven fabric using nylon fibers. It can be illustrated.

  Nylon 6 or nylon 66 may be used alone or in combination, and the nylon fiber cloth may be polyester fiber, polyamide fiber other than nylon 6 or nylon 66, or polyacrylocitryl fiber, if necessary. You may mix and use with a fiber.

The nylon fiber or nylon fiber cloth of the present invention may be dyed.
Nylon fibers have characteristics such as low specific gravity, softness, and easy dyeing, in addition to the property of being excellent in physical strength.

  In the nylon fiber cloth of the present invention, the nylon fiber contained in the nylon fiber cloth needs to be 50% by weight or more, more preferably 90% by weight or more so as not to impair the characteristics of the nylon fiber.

  In the nylon shaped fabric of the present invention, the nylon fiber fabric must be subjected to water repellent treatment from the viewpoint of shaping processability and shaping maintenance property after shaping.

  In the present invention, the water repellent treatment refers to a step of applying a water repellent treatment by adhering and adsorbing a water repellent treatment agent onto a nylon fiber or nylon fiber cloth.

  Examples of the water repellent agent include fluorine compounds, silicone compounds, hydrocarbon compounds, etc., and these may be used alone or in admixture of two or more.

  The fluorine compound refers to a fluorine compound containing a polyfluoroalkyl group in the chemical structure. A polyfluoroalkyl group refers to a group in which two or more hydrogen atoms of an alkyl group are substituted with fluorine atoms. Fluorine compounds include polymer homopolymers containing perfluoroalkyl groups or other polymerizable monomers that can be polymerized with these polymers, for example, vinyl compounds such as acrylic acid, methacrylic acid, styrene, vinyl chloride, etc. And a copolymer obtained by polymerization.

  The silicone compound means a compound having a siloxane bond in the chemical structure, such as polydimethylsiloxane, methylphenylpolysiloxane, amino-modified silicone, epoxy-modified silicone, alkyl-modified silicone, carboxyl-modified silicone, fluorine-modified silicone, Polymerized with various modified silicones such as ether-modified silicone, siloxane-bonded polymer homopolymers or other polymerizable monomers that can be polymerized with these polymers, for example, vinyl compounds such as acrylic acid, methacrylic acid, styrene, vinyl chloride Examples of such a copolymer can be exemplified.

  The hydrocarbon compound means a compound having a long chain alkyl group in the chemical structure. Examples include metal salts of polymer wax emulsions, octadecyl ethylene urea, fatty acid esters, polyamide compounds and the like.

  In the present invention, it is preferable to use at least a fluorine-based compound or a silicone-based compound, particularly preferably a fluorine-based compound, from the viewpoint of securing good shapeability and shape retention after shaping.

  For example, a nylon fiber or a nylon fiber cloth is subjected to a water repellent treatment by, for example, placing a nylon fiber or a nylon fiber cloth with a water repellent aqueous solution diluted with water if necessary in a liquid dyeing machine or the like. Examples thereof include a method of immersing at a predetermined temperature and time, and a method of spraying an aqueous solution of a water repellent agent onto nylon fibers or nylon fiber cloths and then spraying them.

  The amount of the active ingredient of the water repellent adhered to the nylon fiber or the nylon fiber cloth is preferably 0.05 to 10% by mass, more preferably 0.2 to 5% by mass with respect to the fiber. If the amount of the water repellent treatment agent is too large, the treatment residue is wasted, and if it is 0.05% by mass or less, sufficient water repellency cannot be obtained.

  In the present invention, the treatment temperature with the water repellent treatment agent is preferably 30 to 70 ° C. If the treatment temperature is too low, the amount of water repellent treatment adsorbed on the nylon fiber or nylon fiber cloth is small, and if the treatment temperature is too high, the water repellent treatment agent will adhere unevenly to the fibers, resulting in uniform water repellency. It becomes difficult to obtain.

  After the water repellent treatment agent is adsorbed and applied to the nylon fiber or nylon fiber cloth by the above method, the waste water treatment agent is heat treated by calendering or the like in order to firmly adhere the waste water treatment agent onto the surface of the nylon fiber or nylon fiber cloth. The heat treatment temperature is preferably 120 to 200 ° C, more preferably 130 to 190 ° C.

  The shaping processing method of the present invention is characterized in that the shaping jig is heated to 80 to 220 ° C. and shaping is performed while the cloth is brought into contact with the shaping jig.

  In the present invention, the shaping process refers to forming irregularities typified by pleats and wrinkle patterns in a cloth shape, and is formed by applying physical force such as human power or mechanical force to the cloth and bending it. For the shaping process, a known method such as a method using a mechanical pleating machine or a wrinkling machine, a manual kneading method, a method of binding a cloth with a thread or the like can be used.

  According to the shaping processing method of the present invention, the shape retention of uneven patterns such as pleats formed on the cloth is improved by the physical force at the time of shaping processing, and even if the physical force is released after the shaping is completed, There is an advantage that it is easy to maintain the shape. Normally, when shaping without heating, especially for V-shaped sharp patterns, when the physics is released after shaping, the V-shaped tip is deformed into a sharp U-shape by the repulsive force of the fabric. It is difficult to obtain the shape.

  The processing temperature during the shaping process is 80 to 220 ° C., preferably 100 to 200 ° C., preferably 120 to 180 ° C., from the viewpoint of improving the shapeability and washing resistance of the nylon fiber cloth subjected to water repellent treatment. Is more preferable. If it exceeds 220 ° C, the nylon fiber cloth is likely to be discolored. If it is less than 80 ° C., it is difficult to obtain formability.

  During the shaping process, the processing method is not particularly limited, but an indirect heating method such as a method of shaping while applying heat rays, hot air, or heated steam to the cloth or a method of shaping in a heated container, Examples include a direct heating method such as a method in which a shaping jig is heated with electricity, steam, or the like, and a shaping process is performed while directly contacting the cloth with the shaping jig.

  In addition, as a heating method at the time of shaping, from the viewpoint of improving the shapeability and washing resistance of the cloth, the shaping jig is heated with electricity or steam and the cloth is brought into contact with the shaping jig. However, a method of shaping and directly heating is preferred.

  Among these direct heating methods, when the forming jig is subjected to heating, the forming jig is heated to 100 to 220 ° C., and the forming process is performed while the cloth is in contact with the forming jig. This is preferable because a good shaping effect can be obtained, and as a result, excellent formability and washing resistance of the cloth can be obtained.

  In particular, when a shaping machine having a roll is used as a shaping jig, the roll surface temperature is preferably 100 to 200 ° C, more preferably 120 to 180 ° C, and the roll should be shaped. It is preferable to perform shaping such as pleating while touching the cloth, since good cloth shaping and washing resistance can be obtained.

In the present invention, as a post-treatment step, if the fabric that has been subjected to the shaping process is treated for a certain period of time under dry treatment conditions in high-temperature air or steam, a shaping enhancement effect can be imparted, As a result, the formability and washing resistance of the shaped cloth are improved, which is preferable.
For example, a dry post-treatment in which the shaped cloth is left and held in air or steam kept at a high temperature of 90 to 200 ° C., preferably 130 to 180 ° C., for 30 seconds or more, preferably 10 to 60 minutes. The method of doing can be illustrated preferably.

  Since the nylon shaped fabric of the present invention is excellent in shape maintenance, it is necessary to store it in a pleated or brazed cold protection clothing (down jacket), waterproof clothing (windbreaker), or a certain volume. When used as an automotive part such as an air bag or an industrial material, the effect is preferably exhibited.

In the following, “% by weight” is represented by “%”, “Nylon fiber” is represented by “N”, and “Polyester fiber” is represented by “PE” only in Table 5.
Examples 1-8, Comparative Examples 1-8
A 50% nylon and 50% polyester fiber cloth and 100% nylon fiber cloth cut to 1 m in length and width were used.
(Water repellent composition)
60 parts of Asahi Guard AG-7000 (Fluorine water and oil repellent made by Asahi Glass Co., Ltd.)
Penetration agent Emulgen 707 (surfactant manufactured by Kao Corporation) 2 parts solvent Dipropylene glycol 3 parts Water 35 parts Next, the obtained water-repellent treatment agent is put in a liquid dyeing machine, and this water-repellent treatment agent is used as a test cloth. Soaked and treated. The treatment temperature was 50 ° C.

These test cloths were heat-treated with a calendar at 70 to 260 ° C. for 90 seconds.
(Water repellent evaluation method)
Evaluation was made by the spray method of JIS L-1092. The evaluation grade numbers listed in Table 1 below were used as evaluation criteria.

The test cloth thus obtained was shaped using a roll-shaped shaping jig while being alternately bent so as to form straight walls at intervals of 2 cm in the roll direction. The shaping process was performed by changing the surface temperature of the roll as shown in Table 5. Table 5 shows the results of formability, washing resistance, and discoloration of the obtained shaped processed fabric. In addition, the formability, the washing resistance and the discoloration were measured as follows.
(Method for evaluating formability)
The shapeability of the shaped fabric was measured by cutting out an evaluation test fabric from the shaped fabric so as to be 20 cm in length and width, and measuring the angle of the bent portion using a Monsanto-type tester. The smaller the angle, the better the shapeability. The evaluation grade numbers shown in Table 2 below were used as evaluation criteria.

（耐洗濯性の評価方法）
賦形加工の洗濯耐久性は、賦形加工布から縦横20ｃｍになるように評価用テスト布を切り出し、その布を用いてＪＩＳ Ｌ−1610に準じて洗濯を行い、その後乾燥を行う操作を10回行い、試験前後の折り曲げ部の角度をモンサント形試験器を用いて測定し、式(2)から判定した。洗濯前に比べその角度の変化が少ないほど良好な耐洗濯性を有すると判断した。評価基準として下記の表3に記載の評価級数字を用いた。

(Washing resistance evaluation method)
For the washing durability of the shaping process, the test cloth for evaluation was cut out from the shaped cloth so as to be 20 cm in length and width, and the cloth was used for washing according to JIS L-1610, followed by drying. The angle of the bent part before and after the test was measured using a Monsanto type tester and judged from the formula (2). It was judged that the smaller the change in the angle than before washing, the better the washing resistance. The evaluation grade numbers shown in Table 3 below were used as evaluation criteria.

From the results in Table 5, the test cloth is immersed in an aqueous solution containing 3% by mass of a fluororesin that is a water repellent treatment agent, then calendered at 70 ° C. to 260 ° C. for 90 seconds, and the shaping jig is 80 In Examples 1-8, good shapeability and washing resistance were obtained while heating to more than ℃, and in particular, Examples 2-4, 6-6 in which the roll temperature of the shaping jig was 120-220 ° C. In No. 8, good fabric shaping and washing resistance were obtained.
In Comparative Example 1 in which the forming temperature was 80 ° C. or lower, washing resistance was not obtained, and in Comparative Example 2 processed at 240 ° C. that was 220 ° C. or higher, discoloration was observed in the fabric. Comparative Examples 3 and 4 of the cloth not containing the fluorine-based resin or Comparative Examples 5, 6 or 220 ° C. of the cloth having a water repellent (calendering) temperature of 100 ° C. or less even if the fluorine-based resin is contained In Comparative Example 7, the washing resistance was extremely poor even when the shaping process was heated to 70 to 190 ° C. Further, in Comparative Example 8 where the water repellent finish (calendering) was 260 ° C., the fabric was dissolved.

  Next, using the obtained work cloth of Example 6, it was allowed to stand in air at 130 ° C. or in water vapor at 130 ° C. for 20 minutes for post-treatment. The resulting fabric was examined for washing resistance (washing resistance after post-treatment) in the same manner as in the previous period. The evaluation grade numbers shown in Table 6 below were used as evaluation criteria.

  From the results in Table 6, it was found that in Example 2, washing resistance was improved by performing steam treatment or hot air treatment as a post-treatment.

Claims (6)

Nylon shaped cloth characterized in that a nylon fiber cloth containing 50% by weight or more of nylon fiber is subjected to water repellent treatment and then shaped at 80 to 220 ° C. The nylon shaped cloth according to claim 1, comprising a nylon fiber cloth containing 90% by weight or more of nylon fibers. The step of performing the shaping process is a process of heating the shaping jig to 80 to 220 ° C. and performing the shaping process while bringing the cloth into contact with the shaping jig. , 2, a method for shaping a nylon-shaped processed cloth. The shaping processing method according to claim 3, wherein a dry shaping machine having a roll or a wet shaping machine having steam is prepared as the shaping jig. 5. The shaping process according to claim 3, further comprising a step of leaving the cloth at 70 to 200 [deg.] C. for 30 seconds or longer under a shaping process after the shaping process. A nylon shaped fabric product processed by the shaping process according to any one of claims 3 to 5. Clothing, not particularly limited, down jacket, windbreaker or industrial material, but not specifically limited to interior blinds and airbags.