JP2780747B2 - Cotton fiber-containing fiber product and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cotton fiber-containing fiber product suitable for clothing and clothing such as shirts, slacks, blouses, and the like. The present invention relates to a cotton fiber-containing fiber product having improved (wash and wear) properties, pleating properties, puckering properties, and shape retention properties, and a method for producing the same.

[0002]

2. Description of the Related Art Improvement of defects such as easy wrinkling and shrinkage of cellulosic fibers is a permanent problem. There is a strong demand for a puckering phenomenon (twitching phenomenon) caused by a difference in elasticity between sewing threads or fabric parts and an improvement in shape retention in a product shape.
In an attempt to improve this problem, there has been an attempt to utilize a gas phase reaction with formalin in a product state.However, a new problem that cellulose fiber causes a remarkable decrease in strength has been highlighted, and its solution is desired. .

[0003]

DISCLOSURE OF THE INVENTION The present invention has a good texture, excellent wrinkle resistance, and excellent puckling, W / W, shrink-proof and shape-retaining properties after repeated washing. An object of the present invention is to provide a cotton fiber-containing fiber product in which the reduction in strength due to the phase formalin treatment is suppressed as much as possible and a production method excellent in industrial productivity.

[0004]

Means for Solving the Problems The present inventors have made intensive studies to solve the above problems, and as a result, have reached the present invention.

That is, the crystalline structure of cellulose type I is less than 50% by weight in all the crystals, and it contains a cotton fiber cross-linked with formaldehyde using sulfur dioxide as a catalyst source. And cotton fiber-containing fiber products.

And sodium hydroxide and / or liquid
Was treated with ammonia, as a result, the crystalline structure of cellulose I type contains cotton fibers is less than 50 wt% in the total crystals
In textiles is a method for producing a cotton fiber-containing textile product, characterized in that the crosslinking reaction with cellulose allowed steam penetration of formaldehyde within said cotton fibers.

The cotton fiber in the present invention preferably swells by being pretreated with a swelling agent and has a short-axis / major-axis ratio of 0.70 or more in the cross section of the single fiber.

[0008] The cotton-containing fiber according to the present invention, the tree
100% cellulosic fibers mixed with other cellulosic fibers including regenerated cellulose such as cotton fiber alone or viscose rayon (including polynosic), cuprammonium rayon, solvent spinning rayon, etc. It means a fiber when mixed with a synthetic fiber such as polyester, polyamide, acrylic, polyethylene or polypropylene by blending, weaving, or twisting. In the case of a mixed product, the content of the cotton fiber is preferably 20% by weight or more, more preferably 30% by weight or more, in order to sufficiently exhibit the effects of the present invention.

[0009] The fiber product referred to in the present invention is the above-mentioned fiber product.
It means a fabric such as a woven fabric or a knitted fabric using a cotton fiber or a mixed fiber, and a sewn product such as a shirt, slacks, a blouse, a hat, and a handkerchief obtained by using the fabric.

The cellulose type I having a crystal structure referred to in the present invention is obtained by an X-ray diffraction method. H.
Hermans & A. Weidinger: J.W. A
ppl. phys. 19 491-506 (1948)
And Hayashi et al., Hokkaido University Research Report, p. 8 3 (1 9 7 4
).

[0011] Cellulose I in cotton fiber in the present invention
The form is less than 50% by weight of the total crystal. Preferably it is less than 40% by weight, more preferably less than 30% by weight. If the content is 50% by weight or more, crosslinking of cellulose by formaldehyde becomes non-uniform, and a decrease in strength is not preferable.

The cross-linking of cotton fibers with formaldehyde is usually carried out by a so-called gas-phase formalin processing method using formaldehyde vapor (gas) and sulfur dioxide gas. When the crystalline structure of cellulose I is less than 50% by weight of the total weight of the cotton fiber, formaldehyde vapor uniformly penetrates into the cellulose fiber, and uniform crosslinking can be realized.

As a result, it contains cotton fiber which is excellent in wrinkle resistance, puckering property after repeated washing, W / W property, shrinkproof property and shape retention property, and at the same time, suppresses the strength reduction by gas phase formalin treatment as much as possible. Textile products can be manufactured.

The cotton fiber-containing fiber product of the present invention, in the case of a woven fabric, has a dry-proof wrinkle of 270 ° or more according to JIS L-1059B method (Monsanto method), and a total value of the wet-proof wrinkle of 550 ° or more. 570 ° or more is more preferable. In particular, the higher the total value of the dryness prevention wrinkle degree and the wetness prevention wrinkle degree, the higher the W / W property, and the more excellent the puckering property and the shape retention property. A sewing product containing a cellulosic fiber modified to achieve these wrinkle resistance is manufactured by AATC.
Whether the W / W property in the C124-1984 method is 3 or higher or J
AATCC after 5 washes of 103 method of ISL-0217
The puckering property in the method shows a shape retention of grade 4 or higher.

In the present invention , sodium hydroxide and liquid ammonia are used to change the crystal structure of cotton fibers.
Although it is used, a combined use of sodium hydroxide and liquid ammonia is more preferable from the viewpoints of improvement in dyeability and retention of texture after washing.

However, the alkali treatment with sodium hydroxide changes the crystal structure of cellulose from cellulose type I to cellulose type II. The efficiency of this crystal transformation depends on the concentration of sodium hydroxide and the tension of the cotton fibers during the alkali treatment. It is greatly affected by the receiving method and the alkali removal temperature.

On the other hand, the liquid ammonia treatment changes the crystal structure from cellulose type I to cellulose type III. Crystal modification efficiency at this time, the tree if considering reducing the water content in the cellulose is carried out ammonia removal by dry heat
The effect of the tension of the cotton fiber is relatively small and good.

Therefore, in order to make the crystal structure of cellulose type I less than 50% by weight in all the crystals, it is necessary to consider sodium hydroxide treatment at a relatively high concentration, a low tension and a low alkali removal temperature. . The concentration of sodium hydroxide is from 20 ° Be 'to 35 ° Be', and more preferably from 23 ° Be 'to 28 ° Be'. The temperature at the time of removing the alkali is from 0 to 100 ° C, preferably 80 ° C or less. Further, in order to moderate the tension, it is also effective to previously apply a liquid or mechanical rubbing effect, such as a liquid jet dyeing machine, a washer, a tumbler, and a sunphorize, to remove the strain, and then to perform a mercerizing treatment to improve the crystal transformation efficiency.

On the other hand, when the tension is unavoidably added, it can be achieved by using liquid ammonia treatment together.
When treated with liquid ammonia, the cotton fiber-containing fabric is immersed in liquid ammonia for 2 to 20 seconds, and then 5 to 90 seconds,
Desirably, the deammonia treatment is performed by heat or steam at a timing of 5 to 20 seconds.

[0020] and have you in the present invention, crosslinking the cellulose
Formaldehyde used for this purpose easily becomes steam by heating or the like, and can be uniformly permeated into the cotton fiber.

In the case of formaldehyde vapor, MgCl which can be used in a usual resin processing agent (for example, DMDEU) can be used.
_{2 · 6H 2 O, NH 4} Cl, advance the potential acidic catalyst such as hydrochloric acid salts of aliphatic amines, or pretreated, such as by allowed to coexist catalyst such as sulfur dioxide gas, OH formaldehyde is present in the cellulose It reacts with the groups to form crosslinks between cellulose molecular chains, but sulfur dioxide is preferred for obtaining a high W / W property. The treatment conditions for formaldehyde vapor are usually 5 to 80 ° C. and 160 ° C. in the presence of a catalyst.
~ 60 minutes.

In the present invention, the cotton fiber is treated with sodium hydroxide or sodium hydroxide before being brought into contact with steam such as formaldehyde.
When the liquid ammonia is at least once permeated into the cotton fiber and as uniformly as possible, the vapor of formaldehyde or the like can easily permeate into the cotton fiber evenly. Therefore, it is possible to prevent local cross-links from being formed in the cotton fibers or to avoid cross-links that cause distortion, and it is possible to prevent a reduction in the strength of the cotton fibers.

The gas-phase formaldehyde treatment can be performed in either the state of the fabric or the state of the sewn product. However, the treatment after forming the sewn product has no problem in sewing and the shape of the sewn product is more effective. , So puckering,
This is a preferred embodiment because the shape retention is significantly increased.

[0024]

EXAMPLES The present invention will be described below in more detail with reference to examples, but the present invention is not limited to these examples. The evaluation method used in the examples is shown below. Wrinkle prevention method: Wrinkle recovery angles at dry and wet times according to JIS L-1059 B method (Monsanto method) (each D
CR, WCD). Tensile strength: JIS L-1096 Grab method (lateral direction) Tensile strength retention: The ratio of the strength after processing to the strength before processing is shown in percentage. W / W property: Judgment was made based on the AATCC 124-1984 5-step replica method. 5th grade (good)-1st grade (bad)

Puckling property: JIS L-0217
After 5 times of washing with 103 method, AATCC
It was evaluated by a 5-step replica of the seam according to the 88-B-1984 method. 5th grade (good)-1st grade (bad)

[0027] Retainability: Washing and tumble drying (condition I-2) according to JIS L-1042 FII method were repeated 5 times, and then visually judged in 5 steps. 5 (grade): very good 4 〃: good 3 〃: normal 2 ：: slightly bad 1 〃: very bad

Content of cellulose type I crystal (%): Cellulose single fiber was taken out of the woven or knitted fabric and measured by X-ray diffraction. Cellulose I, Cellulose II, Cellulose II
The content of I. H. Hermans & A. We
idinger: J. Appl. phys. 19 49
1-506 (1948) and Hayashi et al., Hokkaido University Research Report, p. 83 (1974).

Example 1 Cotton (sliver-like) was immersed in 25 ° Be 'sodium hydroxide at room temperature for 20 minutes, washed thoroughly with water at 20 ° C., neutralized with a 1% by weight aqueous acetic acid solution, and then washed with water. And dried. The mercerized cotton thus obtained is spun in the usual way: a woven fabric (50 × 50/145 × 75, 112 g)
/ M ² ) and subjected to normal desizing, scouring and bleaching. A shirt was sewn using this cloth (A). 10 kg of this shirt was set in a gas phase reaction treatment tank, and 4 liters of a 37% formalin aqueous solution were uniformly injected in a mist state with steam.
Next, 250 g of sulfur dioxide gas was injected. Thereafter, the temperature of the gas phase reaction vessel was raised to 128 ° C.
Hold for a minute. Thereafter, a formalin treatment was performed using a small amount of aqueous ammonia and steam. Table 1 shows the evaluation results of the obtained shirts.

Example 2 Cotton fabric (90/2 × 90/2/142 × 76, 11 1)
g / m ² ) of the scoured / bleached cloth is repeated twice at 25 ° B. sodium hydroxide by a conventional method twice, then immersed in liquid ammonia for 2 seconds, squeezed at a squeezing rate of 70%, and squeezed for 10 seconds. , And dried at 90 ° C for 1 minute. Using this cloth (B), a shirt was sewn, and gas phase treatment with formalin was performed in the same manner as in Example 1.
Table 1 shows the evaluation results of the obtained shirts.

Example 3 A mercerizing treatment was performed using sodium hydroxide at 32 ° Be ′, and then a liquid ammonia treatment was performed in the same manner as in Example 2 to obtain a fabric (C). Using this cloth (C), a shirt was sewn by a conventional method and subjected to the same gas phase treatment with formalin as in Example 1. Table 1 shows the evaluation results of the obtained shirts.

Example 4 Cotton fabric (90/2 × 90/2/142 × 76, 111
g / m ² ), followed by liquid ammonia treatment in the same manner as in Example 2 to obtain a fabric (D). Using this cloth (D), a shirt was sewn and subjected to the same gas phase treatment with formalin as in Example 1. Table 1 shows the obtained results.

Comparative Example 1 Cotton fabric (90/2 × 90/2/142 × 76, 111
g / m ² ) of the scoured and bleached product was subjected to a conventional mercerizing process with 25 ° Be ′ sodium hydroxide to obtain a fabric (E). Using this cloth (E), a shirt was sewn and subjected to gas phase treatment with formalin in the same manner as in Example 1. Table 1 shows the obtained results.

Comparative Example 2 Cotton fabric (90/2 × 90/2/142 × 76, 111
g / m ² ) was subjected to mercerizing with 32 ° Be ′ sodium hydroxide to obtain a fabric (F). Using this cloth (F), a shirt was sewn and subjected to the same gas phase treatment with formalin as in Example 1. Table 1 shows the obtained results.

Comparative Example 3 The fabric (E) used in Comparative Example 1 was immersed in the processing agent composition (I) solution, squeezed so as to have a squeezing ratio of 72%, and squeezed at 120 ° C.
After intermediate drying for 5 minutes, it was cured at 150 ° C. for 3 minutes. Using this cloth, a shirt was sewn by an ordinary method. Table 1 shows the evaluation results of the obtained shirts. (I) Bath composition: Becamine B425 (Glyoxal resin, manufactured by Dainippon Ink and Chemicals, Inc.) 5 parts Catalyst G (manufactured by Dainippon Ink and Chemicals, crosslinked catalyst) 0.6 parts Finetex PEN (Dainippon Ink and Chemicals, Inc.) 2 parts Silicone Softener EP1010 (Nichika Chemical Co., Ltd. Silicone Softener) 2 parts Water 90.4 parts

[0035]

[Table 1]

The shirt of the present invention has a high wrinkle-preventing property without rough hardening of the hand, a small decrease in tensile strength, an excellent W / W property, and a remarkably excellent puckering property and shape-retaining property. Comparative Example 3
With the shirt according to the conventional method shown in the above, it was difficult to satisfy all the above-mentioned characteristics like the shirt of the present invention.

[0037]

EFFECTS OF THE INVENTION An agent such as sodium hydroxide, liquid ammonia or the like that changes the crystal structure of cellulosic fibers greatly transforms the original crystal structure of cellulose I into another crystal structure, and the swelling is caused by formaldehyde vapor. The fiber product containing cotton fiber, which is uniformly cross-linked and fixed and minimizes the generation of distortion due to cross-linking, has a good texture, a small decrease in strength, a high wrinkle resistance, and an excellent W / after repeated washing. It shows W properties, shrink resistance, and shape retention.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaya Shinjo 2-1-1 Katata, Otsu-shi, Shiga Prefecture Toyo Spinning Co., Ltd. (72) Inventor Tetsuyo Nagara 2-1-1 Katata, Otsu-shi, Shiga No. 1 Toyo Spinning Co., Ltd. General Research Institute Examiner Masato Matsunawa (56) References JP-A-49-55803 (JP, A) JP-A-58-8184 (JP, A) JP-A-58-60065 (JP, A) Japanese Patent Application Laid-Open No. 7-11575 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) D06M 13/00-13/535

Claims (2)

(57) [Claims] 1. The crystal structure of cellulose I is 5% of the total crystal.
A cellulosic fiber-containing fiber product which is less than 0% by weight and contains cotton fibers crosslinked with formaldehyde. 2. A sodium hydroxide and / or liquid ammo.
A textile product containing a cotton fiber which has been pretreated with near and has a crystalline structure of cellulose type I of less than 50% by weight of the total crystal, a formaldehyde vapor is penetrated into the cotton fiber to form a cellulose product. Characterized by cross-linking reaction
A method for producing a fiber product containing cotton fiber.