JPH0860540A - Method for processing cellulosic textile fabric - Google Patents

Abstract

PURPOSE: To obtain the subject fabric excellent in uniform easy care properties by applying a humectant to a cellulosic textile fabric and carrying out the cross-linking reaction with formaldehyde gas. CONSTITUTION: This method for processing a cellulosic textile fabric is to carry out vapor processing for applying one of a hyaluronate, collagen, squalane, squalene, a pyrrolidonecarboxylate, chitosan, etc., as a humectant to the cellulosic textile fabric, drying the resultant fabric, then adsorbing formaldehyde gas thereon and heat-treating the cellulosic textile fabric and thereby apply uniform easy care properties without any dispersion in performances thereto. The uniform vapor processing can be performed by applying the humectant to the fabric even without uniformly regulating the moisture before carrying out the vapor processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for vapor-phase processing a cellulosic fiber cloth using formaldehyde gas.

[0002]

2. Description of the Related Art Cellulosic fiber cloth is subjected to gas phase processing using formaldehyde gas, and formaldehyde is cross-linked between the cellulose molecules of the fiber to modify the cellulose fiber cloth to improve easy care (wash
The imparting of (and wearability) has been publicly known, and is generally performed.

However, the problem with this method is that
If the moisture content of the fabric is not adjusted evenly during processing, there will be variations in the modification. Therefore, the fabric had to be left in a constant temperature and constant humidity chamber for several hours to control the humidity before performing vapor phase processing using formaldehyde gas.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such a situation as described above, and it is possible to perform uniform modification without humidity control before performing vapor phase processing. It is intended to obtain an easy care (wash and wear) processing method for a fiber cloth.

[0005]

SUMMARY OF THE INVENTION The present invention achieves the above object and has the following configuration. That is, the present invention provides a moisturizer to the cellulosic fiber cloth,
The gist of the present invention is a method for processing a cellulosic fiber cloth, which is characterized in that, after drying, formaldehyde gas is adsorbed and heat treatment is performed to form a cross-linking reaction with formaldehyde.

The present invention will be described in detail below.

The term "cellulosic fiber cloth" as used in the present invention means
Woven fabric, knitted fabric, non-woven fabric, etc. containing natural fibers such as cotton and hemp, regenerated cellulose fibers such as rayon and polynosic, and synthetic fibers such as polyester and nylon as other fibers in the form of mixed spinning, mixed fiber, mixed weaving, etc. It may be mixed. Of course, a cloth made of 100% cellulosic fibers may be used.

In the method of the present invention, first, a moisturizing agent is applied to the above-mentioned cellulosic fiber cloth. Examples of moisturizers used here include sodium hyaluronate, hyaluronic acid, collagen, squalane, squalene, sodium pyrrolidonecarboxylate, chitosan, glycyrrhizic acid, lanolin, urea, beeswax, glycerin, sodium alginate, and polyethylene oxide. It is possible to apply it to the cellulosic fiber cloth using one or more of these.

To apply the humectant to the cellulosic fiber cloth, first, the humectant can be dissolved in water, the cloth can be impregnated with the aqueous solution by a usual method, and the cloth can be dried. From a practical point of view, it is even more preferable to control the applied amount with a padder or the like and apply. In the case of sewn products, after soaking in the above-mentioned aqueous solution, centrifugal spin-drying is performed uniformly, or spraying is applied uniformly to dry with a dryer. Drying at 90-200 ℃ 0.5
Do ~ 2 minutes.

Next, in the present invention, the above-mentioned cloth is subjected to vapor phase processing with formaldehyde which adsorbs formaldehyde gas and heat-treats it to crosslink it.

In the vapor phase processing, the vapor phase has a closed reaction chamber and has a blowing device for feeding formaldehyde gas or the like into the interior, a heating device for reaction, and a device for fixing a workpiece. A processing apparatus can be used. As a concrete vapor processing apparatus, ATP (American Text
vapor processing equipment manufactured by ile Processing Co.
17958) can be used.

The formaldehyde gas concentration in this vapor phase processing apparatus is preferably in the range of 1 to 20%, and when it is 1% or less, the crosslinking reaction becomes insufficient, and even when it is 20% or more, it is effective. Will not go any further.

The catalyst used in the cross-linking reaction may be subjected to a gas phase treatment after padding the fabric with the catalyst solution in advance, or the catalyst solution or the liquefied catalyst may be vaporized and adsorbed on the fabric. Good.

Regarding the type of catalyst, when the catalyst is padded in advance, the same catalyst as used in conventional resin processing, for example,
A metal salt of an acid such as zinc nitrate, a Lewis acid, a Frentsted acid or the like can be used. Further, when vaporizing, a volatile acid having a low boiling point such as hydrogen chloride is desirable.

With respect to the catalyst concentration, it is desirable that it be in the range of 0.1 to 3.0% when treated with gas. If the gas concentration is less than 0.1%, the crosslinking reaction will be insufficient, and even if it exceeds 3.0%, the effect will no longer increase. When the catalyst is padded with an aqueous solution, the catalyst concentration is 5 to
A range of 100 g / liter is desirable. If the concentration is less than 5 g / liter, the crosslinking reaction becomes insufficient and 100
Even if it exceeds g / liter, the effect will not increase.

After adsorbing the formaldehyde gas, the cloth is heat treated to carry out a crosslinking reaction.
The crosslinking reaction can be completed by performing the treatment at a temperature in the range of 0 to 180 ° C. for 0.5 to 10 minutes.

The present invention has the above structure.

[0018]

[Function] As in the present invention, when a moisturizing agent is applied to the cellulosic fiber cloth, dried and then subjected to vapor phase processing with formaldehyde, the hygroscopic effect of the moisturizing agent makes the hygroscopicity of the cloth uniform, so Since the moisture content can be kept uniform over the entire fabric without being affected, uniform modification processing can be performed.

[0019]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples. The measurement and evaluation of the performance of the fabrics in Examples were carried out by the following method with respect to 10 randomly sampled samples.

(1) Easy-care property Wrinkle after washing AATCC-124 Packing property AATCC-88-1964T Pleating property AATCC-88C-1964
T

Example 1 A plain woven fabric (155 warps / inch, 80 wefts / inch) made of a 50-count single yarn blended yarn consisting of 50% cotton and 50% polyester was used for ordinary desizing, scouring, bleaching, After mercerizing, immerse it in a moisturizer treatment solution of the following prescription 1 with a mangle, pad it with a pickup of 60%, and then 100 ° C.
And dried for 1.5 minutes. Prescription 1 Sodium hyaluronate (1% liquid) 500 g / liter

After 10 dress shirts were sewn using this cloth, a vapor phase processing apparatus manufactured by ATP (American Textile Processing Co.) (stainless steel width 6 feet, length 1
0 ft, 7 ft high atmospheric pressure closed reaction chamber) was used to put the dress shirt in the processing equipment, sealed and steamed at 17 psi and about 220 ° F. through the injector and steam conduit. , Formaldehyde aqueous solution was supplied to the room for 1.5 minutes, and 2400 g of formaldehyde aqueous solution was injected. Then sulfurous acid gas 15lb
Inject s and let it soak for 2 minutes, then exhaust the free formaldehyde and sulphite gas not retained on the shirt,
After raising the room temperature to 260 ° F, inject 60 psi of steam for 5 minutes to remove residual formaldehyde,
After cooling, the shirt was taken out.

For comparison with the present invention, a dress shirt for comparison (Comparative Example 1) was obtained in exactly the same manner as in this Example, except that the moisturizing agent treatment of Formulation 1 was omitted in this Example. For reference, 10 pieces of dress shirts (Comparative Example 2) were sewn by using the unprocessed cloth immediately before the treatment with the moisturizing agent in this example and provided for comparison.

The performances of the present invention and comparative dress shirts were measured and evaluated, and the results are shown together in Table 1.

[0025]

[Table 1]

As can be seen from Table 1, the dress shirt according to the method of the present invention has no variation in easy care performance and has excellent easy care.

[0027]

EFFECTS OF THE INVENTION According to the method of the present invention, it is possible to perform vapor phase processing with formaldehyde which is excellent in uniform easy-care performance with no variation in performance.

Claims (2)

[Claims] 1. A moisturizer is added to a cellulosic fiber cloth,
A method for processing a cellulosic fiber cloth, which comprises performing a vapor-phase processing with formaldehyde, which is dried and then adsorbed with formaldehyde gas and heat-treated to crosslink. 2. The humectant is selected from the group consisting of sodium hyaluronate, collagen, squalane, squalene, sodium pyrrolidonecarboxylate, chitosan, glycyrrhizic acid, lanolin, urea, beeswax, glycerin, sodium alginate, and polyethylene oxide. The method for processing a cellulosic fiber cloth according to claim 1, wherein the method is at least one kind.