JPS59116467A - Production of fiber structure containing cellulose fibr and synthetic fibril fiber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a fibrous structure made of cellulose fibers and fibrillated composite fibers containing polyester.

Various cleaning cloths, leather, soft papers, etc. are used to remove dirt from the surfaces of various products and keep them beautiful.

In general, stains can be classified into lipophilic stains, hydrophilic stains, and mixtures thereof, and it goes without saying that a cleaning material that is effective against all types of stains is desired for practical purposes. Cellulose-based materials such as gun, hemp, and paper are commonly used.
Although it removes water-soluble substances, it is not effective against oil stains, fingerprints, fogging of glass, etc., and has the disadvantage of generating a lot of dust.

On the other hand, it is well known that synthetic fibers such as polyester, polyamide, and polyacrylic have excellent ability to remove lipophilic stains.
Cleaning cloths using wide-surface curved artificial fibers have also been proposed.

In view of the above circumstances, an object of the present invention is to industrially and easily produce a fiber structure having excellent cleaning power and comprising cellulose fibers and polyester-containing fibrillated composite fibers.

In other words, is it cellulose fiber or polyester? 2 to 8% by weight of alkali metal hydroxide based on the fiber electric charge is applied to a fiber structure using fibrillated conjugate fibers, and scouring of the cellulose fibers and fibrillation of the conjugate fibers are performed simultaneously. The present invention provides a method for producing a fibrous structure containing cellulose fibers and synthetic fibril fibers, characterized by the following.

The fiber structure composed of cellulose fibers and polyester-containing fibrillated composite fibers used in the present invention is a fibrillated composite fiber containing polyester, using cotton, hemp, viscose, etc. alone or a mixture thereof as the cellulose fibers, and using fibrillated fibers containing polyester. The type composite fiber used is one made of polyester alone or polyester and polyamide or polyolefin, which forms synthetic fibril fibers with a single filament fineness of 1 denier or less, preferably 0.5 denier or less after splitting, and cellulose-based The usage ratio of fibers and fibrillated composite fibers is cellulose-based PJ1. l#, is 40~
A range of 7596 is preferred. If it is less than 40%, the removability of water-soluble dirt will be poor, and the fiber structure will be too flexible to be absorbed, and if the cellulose fiber is less than 75%
If the amount is more than that, there is no effect in removing oily T5 stains or fogging on glass, and dust generated from cellulose fibers may also adhere, which is not preferable.

The above-mentioned fibers can be made into a woven fabric by blending-1 weaving or knitting, or can be made into a non-woven fabric to form a fiber structure.
The fiber structure of the cleaning fabric that comes into contact with the object to be cleaned is important;
Even if the usage ratio of cellulose fibers is 40 to 75%, if the contact area with the object to be cleaned is outside the above range,
For example, in the case of reversible woven or knitted fabrics made of cellulose-based w&fibers and fibrillated composite fibers, it is not preferable even if the mixing ratio of the fiber structure is within the above range.

The alkali metal hydroxide used in the present invention is an aqueous solution of caustic soda, caustic potash, lithium hydroxide, etc., and caustic soda is generally used. The amount used is 2 to 8% by weight, preferably Vi 3 to 7% by weight, based on the weight of the fiber.

Embodiments of the present invention will be described below.

First, an alkali metal hydroxide is applied to the fiber structure. In this case, raw cloth is usually used. Those that have been heat-treated such as burnt or heat-set are not preferred. At this time, G-line surfactant, polyester weight loss accelerator, oxidized desizing agent,
There is no problem in using a bleaching agent such as hydrogen peroxide as appropriate. Application methods include padding method, spray
Although there are various methods such as padding method and dipping method, it is usually convenient to use the padding method or dipping method.

Next, steaming or stewing is performed at 80 to 160°C for 6 to 60 minutes. In this case, sufficient consideration should be given to the embrittlement of cellulosic fibers and polyester fibers;
The degree of scouring of cellulose fibers, the degree of division of fibrillated composite fibers, etc. are important.
Steaming is carried out using ~7 weight percent under steaming conditions of 95-100<0>C for 30-45 minutes.

Furthermore, when a weight loss accelerator such as a quaternary ammonicum salt is used, the concentration of caustic soda can be reduced.

Next, bleaching and dyeing (+7) are carried out as necessary, and finally, in order to remove the hardness of the cellulose fibers, silicone-based
Treat with anionic, /ionic, etc. softener.

With the above, the entire process of the present invention has been completed, and the obtained fiber structure has good compatibility between cellulose fiber and synthetic fibril fiber, is highly flexible, and has excellent water absorption and cleaning power. It has the advantage that its durability is semi-permanent, and that the scouring of the cassette fibers and the splitting of the fibrillated composite fibers can be carried out at the same time.

As described above, the method of the present invention provides a fiber structure made of cellulose fibers and fibrillated composite fibers with excellent cleaning power through a simple process, and its industrial utility value is extremely high. It is.

The present invention will be explained below with reference to Examples.

In addition, % in an example shows weight 96, and various measured values were obtained by the following method.

(1) Cleaning power to remove oil-based stains Apply 0.005 s/i of machine oil to a glass plate (preparation), wipe with various test cloths at a load of 400"j/ci, and then wipe with Hitachi Color Analyzer 507. Transmittance was measured using a mold.

Without dirt, the transmittance is 100, and as the dirt increases, the transmittance decreases.

(2) Cleaning power for water-based stains (1) Machine/EIJ: y-sister f
The same experiment as (1) was carried out by applying [0.005 S/d consisting of I Of / (1).

(5) Water absorption, TIS L-1018 Pisic method (4) Tear strength JIS L-1004 Penschlum method (5) Whiteness Total reflectance measurement at 500 nm using Hitachi Color Analyzer 307u.

Example 1 20g hand cotton thread, 50% polyester, 30% polyamide, consisting of 50 denier/25 filaments.
The fibrillated composite fiber in the figure (A in the figure is nylon, B is polyester) (average fineness denier wood twisted yarn (1
A plain weave fabric with a warp density and a weft density of 60 yarns/inch as shown in Table 1 was woven using 50 Gunniru fabrics.

Table 1 Using fabrics with A% 8% C1, treatments (1) to (4) were carried out as shown in Table 2.

(1) Benzyl alcohol treatment After soaking in benzyl alcohol emulsion, squeezing with a mangle to divide fibrillated composite fibers, washing and drying.

(2) Cold patch treatment hydrogen peroxide (35% product) filter 0s/e, caustic sorb 5s/
After applying a solution consisting of L silicate powder 5Q/g and sand/(N DTC (non-ionic activator manufactured by Pundo Co., Ltd.) 2S/e using a mangle, it was sealed with vinyl and kept at 25°C. After being left under these conditions for 20 hours, it was washed with water, hot water, and dried.

(6) Pad steam treated caustic saw 50 W/g, f:/F/
(N D T C5Q / 100% squeezing rate of liquid
After applying it with a mange, it was steamed for 60 minutes in saturated steam at 100°C, and then thoroughly washed with hot water and water, and then dried.

(4) Caustic sorg for pad/steam treatment CHx01) 5097g, hydrogen peroxide (65% product) 20 f/e
, Acid Sodium 1097g, Poondong DTC5su/e
Using a solution consisting of (6), various tests were conducted on the fabric obtained in the same example, and the results are shown in the second barley.

As is clear from Table 2, processing method (I) in which fibrillated composite fibers are split with benzyl alcohol has excellent removability of oily stains, but has poor removability of hydrophilic stains and water absorption. Both sex and white skin are poor.

Processing Method <[I H After the fibers were completely divided with benzyl alcohol, bleaching was carried out using the cold patch method, but the hydrophilic stain removal properties, water absorption, etc. were inferior. When the fibers are completely split and then treated with pad steam using MaOH, as in the processing method (IID (6)), the cleaning power is good, but the strength of the fibrillated composite fibers is reduced. Is the processing method ff) just bleaching using the cold patch method? Although this method was carried out, the fibers were not split at all and the quenching ability was poor.

The processing method (VD color (with νV, the rod is well refined, the water absorption is good, the fibers are completely divided, the oil stain removal is good, there is little loss of strength, and the sample And + 00%) is Hydrophilic stain removal performance is good, but lipophilic stain removal performance is poor, and the sample (fibrillated synthetic fiber +00967), on the contrary, has no hydrophilic stain removal performance, and the present invention examples (VD, (B), (~ [1-B has excellent hydrophilicity and lipophilic stain removal properties.

Example 2 Using the fabric B of Example 1 (combined woven fabric of cotton and fibrillated composite fibers), a mangle of 100% squeezed Na (Hl and sandpan DTC5W/e liquid) shown in Table @6 was used. After application, it was treated under the steaming conditions shown in Table 3. All of the obtained samples were bleached by the cold patch method of Example 1. Softening treatment was performed using nonionic softener) + (1/JIK).

Various tests were conducted using the obtained cloth, and the results were as follows.
The fruits are shown in Table 6.

Table 6 As is clear from Table 6, the present invention examples (MaOH amount: 2 to 8% by weight based on the fiber weight, processing conditions 280 to 160°C
for 6 to 60 minutes], for example, as in Comparative Example 2.
When the aOH concentration is low, both stain removal and water absorption are ineffective,
When the NaOH concentration is high, as in Comparative Example 9, the strength decreases significantly, which is not preferable.

In addition, even if NaOH 6% is in the range of 2 to 8% by weight based on 1 fiber solution as in Comparative Example 10.12, the treatment 1%,
Depending on the situation at the time of processing, it may not be possible to fully achieve the purpose of a non-explosion project.

Example 6 5th spun rayon yarn made of poly/thick rayon of 1.4 denier, used for all warps, weft 2 70% polyester made of 150 filament of 150 denier,
A woven fabric having the structure shown in Table 4 was woven using figurized composite fibers containing 3D% polyamide (average fineness after splitting: 0.2 denier').

The blending rate of the woven fabric is polynosic rayon 5096
, fibrillated composite fibers were 50%, and the fiber ratio on the cloth surface was as shown in Table 4. Using these fabrics, Na, OH 3%, neolay) based on the fiber weight
NA-50 (manufactured by NICCA CHEMICAL KK, quaternary cationic activator) in a tilted bath ratio of 1:20. A similar flexibility treatment was performed.

All the various tests were carried out using the obtained cloth, and the results were reported in the fourth section.
Shown in the table.

Even with 50% yarn and 50% fibrillated composite fibers, the effect on both #i oily and hydrophilic stains is not sufficient depending on the stain cleaning direction, that is, the ratio of the surface fibers of the cloth.

[Brief explanation of drawings]

Figures 1 to 7 show the cutting of fibrillated composite fibers in the method of the present invention [! 11 Schematic diagram, in the diagram, A-type polyamide,
B1-1 polyester.

Claims (1)

[Claims] (1) -1! A fiber structure made of fibrillated composite fibers containing lurose fibers and polyester is treated with an alkali metal hydroxide of 2 to 8% by weight based on the weight of the fibers, and the cellulose fibers are refined and the composite fibers are 1. A method for producing a fibrous structure containing cellulose fibers and synthetic fibrillar fibers, characterized by simultaneously performing fibrillation. (2) The method according to claim 1, wherein the composite fiber has a single fiber fineness of 1 denier or less after fibrillation. (6) The method according to claim 1 or 2, wherein the fiber structure comprises 40 to 75% by weight of cellulose thread* and 60 to 25% by weight of composite fibers. (4) The method according to any one of claims 1 to 2, wherein the alkali metal hydroxide is caustic soda. (5) Claims 1 to 3, in which the alkali metal hydroxide is applied in an aqueous solution by a heading method or a dipping method.
The method described in any of 4.