JPH06287811A - Antifungal raw yarn for socks - Google Patents

Abstract

PURPOSE:To provide the subject raw yarns freed from such problems as esp. discoloration, inadequate provision of antifungal effect and lack in its sustainability and decline in mechanical strength. CONSTITUTION:The objective antifungal raw yarns for socks can be obtained by incorporating (A) polyamide fibers with (B) 0.5-3.0wt.% of antifungal dissolvable glass powder <=5 (pref. <=1)mu in particle diameter prepared by incorporating (1) 0.1-0.7wt.% of Ag2O in (2) dissolvable glass composed of 49-51mol% of P2O5, 43-45mol% of MgO and 5-7mol% of Al2O3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the provision of a sock base yarn having antibacterial properties, and in particular, it solves the problems of preventing yellowing, maintaining the antibacterial action, and lowering the strength of stockings. It is suitable as a material for socks with high fashion such as pantyhose and tights.

[0002]

2. Description of the Related Art Conventionally, a soluble glass capable of eluting copper ions and silver ions has been blended with a fiber material for sterilization, antibacterial, antibacterial,
As a technique for imparting each function such as deodorization, for example, the technique disclosed in JP-A 1-213410 is known.

Examples of such known examples include polyamide, aramid,
Si for various fibers such as polyester, vinylon and rayon
Network-forming oxides such as O ₂ , B ₂ O ₃ , and P ₂ O ₅ , or Na ₂ O, K ₂ O, CaO, MgO, BaO, Al
_During spinning, an antibacterial agent is prepared by adding a metal compound that releases copper ions such as Cu ₂ O, CuO and Ag ₂ O to a soluble glass made of a network modifying oxide such as ₂ O ₃ , TiO ₂ and ZnO during spinning. Such a function is imparted by adding or by adhering by spinning or the like after spinning.

[0004]

However, in such prior art, the problem of yellowing of the fiber due to the antibacterial agent, or the problem of persistence of the antibacterial effect, and further the strength, depending on the composition and manufacturing conditions, In particular, in the case of polyamide-based fibers such as nylon 6 and nylon 66, problems such as coloring of the yarn and discoloration when left in a natural environment occurred in the method of kneading with a resin.

On the other hand, in women's socks made of such polyamide fibers, in recent years, in order to make female legs look beautiful, the pursuit of thinner and more transparent materials has been made.
It is not uncommon for ultrafine yarns of 15 denier or less to be used as the fineness of the yarn is further advanced. Further, from the viewpoint of appearance, it is also necessary that the thread is not colored unnecessarily, or that the color tone does not change over time. In addition, it is necessary to maintain the strength above a certain level, even though it is made finer, at the time of knitting and at the time of wearing, and it is also an important issue from the viewpoint of its use that the texture is not deteriorated. However, as such a sock raw yarn, the provision of a material that can satisfy this from the viewpoints of maintaining strength, preventing discoloration, texture, etc. Was required. The present invention provides a novel sock base yarn that does not exist in the prior art and satisfies the above-mentioned requirements.

[0006]

SUMMARY OF THE INVENTION However, the present invention is a constitution of a fiber having an antibacterial ability by a soluble glass, and in the constitution, the composition ratio is P ₂ O ₅ 49 to 51 mol%,
MgO 43 to 45 mol% and Al ₂ O ₃ to 5 to 7 mol% were mixed with Ag ₂ O in an amount of 0.1 to 0.7 wt%, and the particle size was 5 μm or less, more preferably 1 μm.
The present invention relates to the provision of a sock base yarn characterized by containing 0.5 to 3.0% by weight of an antibacterial and soluble glass powder in a micron or less content with respect to a polyamide fiber.

[Action]

The composition and function of the antibacterial soluble glass constituting the present invention will be described. As described above, the phosphoric acid-based soluble glass is mainly used, and magnesium oxide and aluminum oxide are mixed therewith. Silver oxide is added to the resulting soluble glass to release antibacterial ions. The composition of such fusible glass is
It is important to prevent yellowing or discoloration when added to the resin or due to external conditions after addition, and for such purpose, the compounding ratio is generally as described above. It is desired to be in the range.

The meltable glass is adjusted to have a particle size of 5 μm or less, more preferably 1 μm or less by an appropriate method such as crushing, and it is added to the polyamide resin before spinning or at the time of spinning to 0.5% with respect to the polyamide resin. It is added in a proportion of from 3.0 to 3.0% by weight and uniformly dispersed to form the yarn of the present invention.

The particle size and the addition amount of the soluble glass are based on the use of the water-soluble glass having antibacterial properties which constitutes the present invention, and the antibacterial effect and its sustainability,
The above range is set from the viewpoints of maintaining strength and feeling. That is, if the particle size is larger than the above range and if it is added in a large amount, it may cause poor yarn quality, unevenness of the yarn surface, decrease in strength, etc., and also cause high cost. On the other hand, on the contrary, if the amount added is small, problems occur in antibacterial effect and durability.

In the present invention, such conditions have been specified particularly in the recent special applications such as finer and more fashionable socks and fineness of 50 denier or less, particularly 30 denier or less. This is because nylon 6 or polyamide fiber for socks such as nylon 66 is used as the target material.

In the spinning, various additives which are usually used, for example, stabilizers against heat and light, or smoothing agents, plasticizers, antioxidants, thickeners, etc. are added in appropriate amounts. These may be added in various ranges, or these may be uniformly dispersed in pellets prior to spinning.
Also, the conditions in spinning, namely, melting, extrusion, drawing,
Various conditions such as cooling, heat treatment, relaxation, etc., and the shape of the spinneret are arbitrary, and the yarn obtained by this is a monofilament or a multifilament yarn,
Alternatively, it is used as a sock raw yarn after being crimped and bulked.

The present invention will be specifically described below with reference to examples.

Example 1 When melt-spinning a nylon 6 polymer, P ₂ O ₅ 5 whose particle size was adjusted to 5 μm or less was used.
0 mol%, MgO 44 mol%, Al ₂ O ₃ 6 mol%, A
An antibacterial soluble glass powder having a composition of 0.5% by weight of g ₂ O was uniformly blended in an amount of 1.5% by weight based on the weight of the polymer and melt-spun to obtain a 35 denier nylon yarn of the present invention. The results of evaluating the yarn and knitting the stocking using the yarn and confirming the effect are shown in Table 1, Table 2, Table 3, and Table 4.

[0013]

[Table 1]

[Table 2]

[Table 3]

[Table 4]

Table 1 shows the evaluation of the physical properties by the yarn, Table 2 shows the evaluation of the antibacterial property by the knitted fabric, Table 3 shows the evaluation of the discoloration of the knitted fabric under various environments, and Table 4 shows. Indicates whiteness, yellowing degree, and fluorescence intensity depending on the knitted fabric. In each table, the control group 1 has an average particle size of the soluble glass of 10 microns and the amount added is 0.5% by weight, and the control group 2 has an average particle size of the soluble glass of 5 microns and the addition amount is 0.5% by weight. The control group 3 contained 4.0% by weight, the antibacterial nylon yarn of Company T containing an antibacterial agent prepared by adsorbing silver ions on a zeolite system, and the control group 4 having silver and copper ions attached to the zeolite. This is an antibacterial nylon yarn manufactured by Company K containing the following antibacterial agent and evaluated.

The evaluation method will be described below. Table 1
The strength, elongation, and elongation recovery in Table 1 were measured by the JIS measurement method, and the elongation recovery indicates the maximum resistance value at a constant elongation of 15%. (Average value of measured n number 10) The antibacterial properties in Table 2 were evaluated as follows. (Average value of measured n number of 10) <Test method> Bacteria count method <Test strain> Staphylococcus aureus IFO
12732 <Test method> A broth suspension of test bacteria was added to the test sample, and the number of produced bacteria after culturing at 37 ° C for 18 hours in a closed container was measured to determine the increase / decrease value with respect to the number of inoculum. In order to see the durability of the effect, the laundry was repeatedly washed 10 times using a household washing machine, and the evaluation was obtained.

The evaluation 1 in Table 3 is a moisture content of 100% when evaluated for 2 days when left for 4 days in direct sunlight, and a moisture content of 3 when evaluated for 3 days when left for 4 days in direct sunlight. 1
It was set to 00%, and the degree of fading when left for 2 hours under a high pressure mercury lamp was judged on a gray scale. (Average value of 3 measurements n)

Table 4 shows whiteness, yellowing degree, and fluorescence intensity, and the measurement was performed as follows. Whiteness: C.I. I. E L ^* . a ^* . b ^* Calculated in terms of Hunter whiteness using a color system. Yellowing degree: same as above, calculated by Hunter's formula. Fluorescence intensity: a measurement value at a wavelength of 400 to 700 nanometers, which was measured by a Macbeth colorimeter 2020 plus. The term “after 10 times of washing” means an evaluation after repeating 10 times using a household washing machine in order to see changes due to washing. (Average value of 3 measurements n)

[0018]

As is apparent from the evaluations of the above examples, in the present invention, the problems such as yellowing, discoloration, and the like, which have been considered as the conventional defects, are solved, and the antibacterial effect thereof, and its It was also excellent in sustainability. Furthermore,
In terms of strength and the like, no deterioration was observed, and when the surface of such a yarn was observed with an electron microscope, no extreme roughness was observed, and it was not so much as to hinder knitting and texture. As described above, the present invention has an excellent function as a sock raw yarn.

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location D02G 3/44

Claims (1)

[Claims] 1. The composition ratio of P ₂ O ₅ is 49 to 50.
51 mol%, MgO 43 to 45 mol%, Al ₂ O ₃ 5 to 7 mol% Ag ₂ O 0.1 to the soluble glass.
0.5 wt% to 3.0 wt% of polyamide fiber is mixed with 0.7 wt% of antibacterial soluble glass powder having a particle size of 5 μm or less, more preferably 1 μm or less. A sock base yarn having antibacterial properties.