JPH09117353A - Bedclothes containing filler having antibacterial antimycotic function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make sweat or the like hard to be contained, rapidly dry it, and restrain elution of useless silver ions at unused time by sandwiching nonwoven fabric obtained from polypropylene fibers or the like containing powder of meltable glass containing silver ions between surface cloth and a filler of bedclothes containing the fiber. SOLUTION: When it is applied to a mattress, nonwoven fabric 3 of polypropylene fibers having an antibacterial/antimycotic function is sandwiched, and is sewn to between intermediate cotton (a filler) 1 and surface cloth 2 made of cotton cloth. This nonwoven fabric 3 is obtained by using polypropylene fibers containing powder of meltable glass containing silver ions, or by containing powder of meltable glass in both fibers and an adhesive component. Preferably, a material which is formed by kneading powder of meltable glass which contains silver ions and has a particle diameter not more than 50μm at a rate not more than 30wt.% into a constitutive fiber raw material and to which initial eluting rate of silver ion not less than 10ng/cm<2> /day is given, is used as the polypropylene fibers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bedding having a filling material such as a futon, a pillow or the like cotton, and a feather having an antibacterial and antifungal function, and particularly to the occurrence of discoloration, imparting an antibacterial and antifungal and insecticidal effect and its sustainability The present invention relates to a bedding containing a filler, which solves the problem of strength reduction.

[0002]

2. Description of the Related Art In recent years, goods with antibacterial and antifungal functions have been put to practical use in various fields, and are easily soiled by daily use.
It has been considered to realize this by using a non-woven fabric or cotton having an antibacterial and antifungal function containing soluble glass even for bedding containing a filler such as futons and pillows which are difficult to wash.

Examples of conventional non-woven fabrics and cottons having an antibacterial and antifungal function containing soluble glass include, for example, JP-A-4-242.
B containing silver, copper, or zinc ions described in JP-A-58
There is one in which powder such as ₂ O ₃ —SiO ₂ —R ₂ O type glass is mixed or added. In this type of non-woven fabric or cotton, the antibacterial and antifungal function has a wide range depending on the composition of the soluble glass and the method of selecting the range of its addition amount.

[0004]

However, such a conventional non-woven fabric having an antibacterial and antifungal function is used for a wide range of applications such as clothing interlining, filter sanitary materials, daily necessities, towels and sports equipment. Since the purpose of the invention is to provide a general-purpose product intended to be used, there is a problem that it cannot be said that it is necessarily the most suitable bedding containing a filler such as a futon and a pillow.

The present invention has been made in view of the above conventional problems, and specifies the types of antibacterial and antifungal functional metal ions to be contained in non-woven fabric, cotton fiber and soluble glass powder. An object of the present invention is to provide a bedding containing a filler having an antibacterial and antifungal function, which has solved the above-mentioned problems and is a novel and non-conventional bedding.

[0006]

DISCLOSURE OF THE INVENTION The filled bedding of the present invention uses polypropylene fibers containing a powder of a soluble glass containing silver ions, or the above-mentioned soluble glass in an adhesive component of a non-woven fabric. Non-woven fabric obtained by including powder, or by dissolving the soluble glass powder in both the fiber and the adhesive component, is sandwiched between the table cloth of the bedding containing the filler and the batting, or containing silver ions. It is characterized in that batting containing polypropylene fibers containing powder of soluble glass is used as a filler, and the filler is covered with a face cloth.

Further, the polypropylene fiber containing the soluble glass powder containing silver ions contains 30% by weight or less of the soluble glass powder containing silver ions and having a particle diameter of 50 μm or less in the constituent fiber material. Knead in proportion 10n
It is characterized by having an initial elution rate of silver ions of g / cm ² / day or more. Further, the soluble glass containing this silver ion has a composition ratio of P
A in a soluble glass in which ₂ O ₅ is 49 to 51 mol%, MgO is 43 to 45 mol%, and Al ₂ O ₃ is 5 to 7 mol%.
It is characterized by containing 0.1 to 0.7% by weight of g ₂ O.

In the present invention, the synthetic fibers that can be used as the constituent fibers of the non-woven fabric or cotton are limited to polypropylene fibers. If it is not made of hydrophobic fiber, unnecessary silver ions are eluted due to moisture absorption, which causes a drawback that the antibacterial and antifungal action is deteriorated at an early stage. A typical example of the hydrophobic fiber is a polyolefin fiber, and a typical example of the polyolefin fiber is a polypropylene fiber and a polyethylene fiber. However, the latter cannot obtain a fine fiber, so that a soft feeling cannot be obtained, and the latter is limited to polypropylene fiber.

Organic solvent adhesive components (binders) such as urethane, acrylic, synthetic rubber latex, and melamine emulsion can be used as the fiber adhesive for making the nonwoven fabric. In addition to the method of using the above-mentioned binder, a method of making a non-woven fabric includes a method of melt-bonding a felt-like fiber web, and a mechanical method of tying fibers together by a needle punch method.

The soluble glass containing silver ions used in the present invention is a general term for glasses whose composition is controlled in consideration of the physical and chemical characteristics of glass so as to exhibit a limited melting rate. Thus, a soluble glass containing silver ions can elute silver ions at a defined rate over any period of hours to years. Then, the eluted silver ions are adsorbed on the cell walls of bacteria or microorganisms or condensed in the cell membrane to inhibit the growth of bacteria or microorganisms by a so-called oligodynamic effect and exert an antibacterial function.

Generally, fungi, bacteria, sea urchins and the like propagate when the humidity is high, and when the humidity is low, the fungi and bacteria do not propagate very much. In contrast, soluble glass elutes many of its components when the temperature and humidity are high,
When the temperature and humidity are low, the components are not eluted so much, so that it is in direct proportion to the growth of mold and bacteria. That is, when bacteria and the like are easily propagated, a large amount of antibacterial and antifungal components are eluted from the soluble glass.
Almost no antibacterial and antifungal components are eluted from the soluble glass.

The amount of the soluble glass added varies depending on the particle size, but when the particle size is 50 μm or less, the range is preferably 0.1 to 30% by weight based on the weight of the nonwoven fabric. As a metal that emits ions as an antibacterial and antifungal component to be contained in soluble glass, copper, zinc, and other metal compounds having an antibacterial and antifungal function are conceivable, but safety,
Due to its antibacterial and antifungal properties, it is limited to those that release silver ions.

When the amount of silver ions eluted from the non-woven fabric and cotton constituting the bedding containing the filler obtained by the present invention is 10 ng / cm ² / day or more in distilled water at 20 ° C., the bacteria and mold will be protected by the oligodynamic action. Breeding was inhibited with favorable results.

Examples of the components of the soluble glass usable in the present invention include network-forming oxides such as SiO ₂ , B ₂ O ₃ and P ₂ O ₅ , or Na ₂ O, K ₂ O, Cao and Mg.
It consists of a network-modifying oxide such as O, BaO, Al ₂ O ₃ , TiO ₂ , and ZnO. When it absorbs moisture, the soluble glass gradually dissolves due to the moisture, and the silver ions contained in the glass composition are eluted. Although the thing which can be used is not particularly limited, when the fusible glass having the composition according to claim 4 is used, it is particularly advantageous in terms of preventing yellowing of the bedding containing the filler and maintaining the antibacterial and antifungal action. .

The bedding containing a filler of the present invention uses a nonwoven fabric or cotton having an antibacterial and antifungal function that satisfies the above-mentioned requirements. , Quilting, or stab-sewn sewing is reinforced and sewn by sandwiching it between the surface cloth and the filling material such as batting, and finishing into a bed with a desired filling material such as pillows, bedding, and comforters. If the batting has an antibacterial and antifungal function, the action of the antibacterial and antifungal is further enhanced, but a normal filler such as cotton can also be used. Also,
A non-woven fabric having an antibacterial / antifungal function may not be used between the outer cloth and the batting, and a batting having an antibacterial / antifungal function that satisfies the above requirements may be used.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. [Embodiment 1] FIG. 1 is a cross-sectional view showing a mattress according to a first embodiment of the present invention. An antibacterial and antibacterial agent, which will be described next, is provided between a batting (filler) 1 and a cotton cloth 2. A polypropylene fiber nonwoven fabric 3 having a mold function is sandwiched and sewn.
The non-woven fabric 3 used was manufactured as follows.

First, when melt-spinning polypropylene, P ₂ O ₅ 5 pulverized to a particle size of 25 μm or less is used.
An antibacterial and antifungal soluble glass powder having a composition of 0 mol%, MgO 44 mol%, Al ₂ O ₃ 6 mol%, and Ag ₂ O 0.5 wt% was uniformly mixed at 1.5 wt% with respect to the weight of the polymer. And melt-spun to obtain short fibers having a fiber length of 30 mm and a fineness of 3 denier. Next, this short fiber was dispersed in water using a paper making machine to make a paper. Further heat-pressed with a calender roll machine (at about 130 ° C), then 15
It heat-processed at 0 degreeC for 1 minute, and finished the nonwoven fabric with a basis weight of 30-35 g / m < ² >.

To examine the antibacterial and antifungal properties of this non-woven fabric, 25 cm ^{2 of} the non-woven fabric was cut and placed in 50 cc of water at a temperature of 20 ° C.
When the amount of silver ions eluted was measured by immersion for 40 hours,
Results of ng / cm ² / day were obtained. Further, this non-woven fabric was cut into a size of 9 cm ² (3 cm × 3 cm), and the spore suspension of green mold was applied on a normal broth agar medium and placed on the medium, followed by culturing at 24 ° C. for 4 weeks. Then, the length of the mold growth inhibition zone is measured, and the circumference of the nonwoven fabric according to the present invention is 2 to 3 m.
The result obtained was that no blue mold was observed in m. It should be noted that no yellowing occurred in the non-woven fabric during these 4 weeks.

The appropriate amount of silver ions eluted from the non-woven fabric 3 exude to the batting 1 and the outer fabric 2 which are in contact with the non-woven fabric 3, exerting an antibacterial and anti-fungal effect on the entire surface of the mattress, and clean the mattress for a long period of time. keep. Dry the mattress on the sun,
When it is dried in a dryer, the elution of silver ions is reduced, and when it is absorbed by sweat, the elution of silver ions is increased and the antibacterial and antifungal action is enhanced.

[Embodiment 2] The nonwoven fabric manufactured as follows was used as the nonwoven fabric of the comforter having the same structure as that of the above-mentioned Embodiment 1. First, a commercially available non-woven fabric obtained by heat-sealing polypropylene (unit weight: 300 g / m ² ) was obtained.

On the other hand, soluble glass (P ₂ O ₅ 65 mol%, CaO 15 mol%, Na ₂ O 14 mol%, Al ₂
Ag ₂ O based on the basic glass composition of 6 mol% O _3.
A glass to which 1.0 wt% was added was pulverized to 20 μm or less) was added to an acrylic aqueous emulsion so as to be 5 wt / volume% to prepare a suspension. The above non-woven fabric was put in a bath of this solution, squeezed with a nip roller after putting, and after removing excess water, heat-bonded at 140 ° C. for 30 minutes to obtain a non-woven fabric having an antibacterial and antifungal function.

In order to examine the antibacterial and antifungal properties of this non-woven fabric, 25 cm ² of the non-woven fabric was immersed in water at 20 ° C. for 24 hours, and the amount of silver eluted was measured. The results were that the amount of deposited soluble glass was 8.0 g / m ² and the elution rate of silver ions was 700 ng / cm ² / day. Next, for the inhibition of the growth of green mold, after culturing on a potato dextrose agar medium at 25 ° C. for 1 week,
The stunt zone was observed. No blue mold was found around 5 mm around the nonwoven fabric. Furthermore, after this, this test subject was also immersed in water for 1 day, and the deterioration of the blue mold growth inhibition function due to the elution of silver ions was also observed. The length of the blue mold inhibition zone was 4
Even with a slight decrease in mm, it was possible to expect a sufficient effect as a bedding with a filler that will absorb a large amount of water with a wet foot.

[Third Embodiment] FIG. 2 is a cross-sectional view showing a pillow according to a third embodiment of the present invention, in which batting 4 is wrapped with a silk cloth outer cloth 5 and sewn on the pillow. This batting 4
The polypropylene fiber having the same antibacterial and antifungal function as that of the above-described Embodiment 1 was used for the. The silver ions eluted from the batting (filler) 4 made of polypropylene fiber having an antibacterial and antifungal function also exude to the surface cloth 5, exerting an antibacterial and antifungal effect on the entire pillow, and keep the mattress clean for a long period of time.

When polypropylene fiber having an antibacterial and antifungal function is used for the batting as in the third embodiment, the batting is not necessarily made of polypropylene fiber having 100% antibacterial and antifungal function, and cotton, It is possible to change the elasticity, feel, hygroscopicity, etc. by mixing other fibers such as polyester cotton according to the application.

[0025]

As described above, according to the present invention, since hydrophobic polypropylene fiber is used as the fiber material of the non-woven fabric constituting the bedding containing the filler or the batting which is the filler, it is less likely to contain sweat etc. and comfortable. In addition to being able to dry quickly, it is possible to suppress the elution of useless silver ions when not in use, and the composition and amount of the soluble glass having an antibacterial and antifungal function can be selected in a considerably wide range. Therefore, it is possible to have a wide range of antibacterial and antifungal functions, and since the ingredients that have antibacterial and antifungal functions are limited to silver compounds that are safe for the human body, it can be used as a bedding with filler without any problems from the viewpoint of safety and hygiene. can do.

Further, 30 wt% or less of a molten glass powder containing silver ions and having a particle size of 50 μm or less, which is used for the bedding containing the filler, is kneaded in polypropylene fiber in an amount of 10 ng / cm ² / day or more. Since the fiber has an excellent antibacterial and antifungal function by providing an initial elution rate of silver ions, it is possible to eliminate the risk of falling off compared to when it is attached to the outer surface. Compared with this, the period during which the antibacterial and antifungal function can be exerted is much longer, and a stable effect can be maintained for a long period of time.

Further, the soluble glass exhibiting antibacterial and antifungal properties is composed mainly of phosphoric acid type glass, which is mixed with magnesium oxide and aluminum oxide to be oxidized to release antibacterial and antifungal ions. The addition of silver can prevent yellowing and discoloration, and it maintains a stable antibacterial and antifungal effect without causing yellowing or discoloration for a long time as a bedding with filler. be able to.

[Brief description of the drawings]

FIG. 1 is a sectional view of a mattress having an antibacterial and antifungal function according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a pillow having an antibacterial and antifungal function according to another embodiment of the present invention.

[Explanation of symbols]

 1 Filler (Batting) 2 Table cloth 3 Nonwoven fabric 4 Filler (Batting) 5 Table cloth

Claims (4)

[Claims] 1. Use of polypropylene fibers containing a soluble glass powder containing silver ions, or inclusion of the soluble glass powder in an adhesive component of a non-woven fabric,
Alternatively, it has an antibacterial and antifungal function, characterized in that a non-woven fabric obtained by including the soluble glass powder in both the fiber and the adhesive component is sandwiched between the cover and the filler of the bedding containing the filler. Bedding with filler. 2. A filling material comprising batting containing polypropylene fibers containing powder of soluble glass containing silver ions,
A bedding containing a filler having an antibacterial and antifungal function, which is obtained by covering the filler with a surface cloth. 3. The polypropylene fiber containing the soluble glass powder containing silver ions contains 30% by weight or less of the soluble glass powder containing silver ions and having a particle diameter of 50 μm or less in the constituent fiber material. Knead at a ratio of 10 ng /
The bedding containing a filler having an antibacterial and antifungal function according to claim 1 or 2, which has an initial dissolution rate of silver ions of not less than cm ² / day. 4. The soluble glass containing silver ions has a composition ratio of P ₂ O ₅ of 49 to 51 mol%, MgO of 43 to 45 mol%, and Al ₂ O ₃ of 5 to 7 mol%. 4. A bedding containing a filler having an antibacterial and antifungal function according to claim 1, wherein the soluble glass is blended with 0.1 to 0.7% by weight of Ag ₂ O.