KR200276993Y1 - Radiating polyurethane foam and pillow made of the same - Google Patents

Abstract

The spinning polyurethane foam produced by mixing the spontaneous clay ceramic powder with main component is the ratio of alumina (Al ₂ O ₃ ) and silica (SiO ₂ ) to the natural clay whose main component is Al ₂ Si ₂ O ₅ (OH) _4. Spinning ceramic powders obtained by adding alumina (Al ₂ O ₃ ) to wet, mixed and calcined to be approximately 2: 1 to 3: 1 were mixed with a polyether-based polyurethane, and volatile in the polyurethane mixture. It is produced by mixing and foaming a solvent with a blowing agent. The polyurethane mixture may further be mixed with tourmaline in powder form.

Description

Spun Polyurethane Foam and Pillow Made Using Them {RADIATING POLYURETHANE FOAM AND PILLOW MADE OF THE SAME}

The present invention relates to a polyurethane foam, and more particularly to a spun polyurethane foam produced by mixing a spun ceramic powder mainly composed of natural clay.

In general, polyurethane foam refers to a porous product in which a polyurethane is a skeleton, and a polyurethane obtained by the reaction of an isocyanate compound and glycol is used as a constituent material, and a component of isocyanate and water used as a bridge binder. It refers to a foamed product made by mixing a volatile solvent such as carbon dioxide and freon produced by the reaction with a blowing agent.

These polyurethane foams have the advantage of being able to control the bulk density relatively freely, and simply foam in the field anywhere. In addition, depending on the type of raw glycol used, it can be divided into polyether foam and polyester foam. The polyether foam has good flexibility and the polyester foam is suitable for use as an industrial foam. Thus, the foams made in this way have various rigidities such as super soft, soft, semi-hard, and hard.

Super soft and soft foams are used for futons and mattresses because of their excellent cushioning properties, and rigid foams are used as refrigerator insulation materials because of their rigidity and good thermal insulation and low temperature characteristics. It is mainly used as automobile interior materials due to its good shock absorption. There are two foam forming methods, one-shot method and prepolymer process. The one-shot method is economical because the raw material components are mixed and reacted at once and foamed, so the flexible foam is mostly made by this method. In addition, the prepolymer method is a method in which a part of glycol and diisocyanate are reacted in advance to form a prepolymer (partial polymerizer), and then mixed with the remaining glycol, a blowing agent, and a catalyst. This method is used to create high quality foams that are used industrially, such as rigid foams.

Recently, as interest in health has increased, a technique of adding various materials for improving health to polyurethane foam has emerged. Korean Patent Publication No. 2001-112833 "Polyurethane foam and its manufacturing method" has been proposed a technique for adding jade as one such example. This technique foams jade powder in the form of particulates having a size of 300 to 1000 mesh by adding 0.1 to 50% by weight to polyester or polyether based polyols. In addition, according to the above literature, it is also possible to add ocher to the polyol in addition to jade, wherein the component ratio of ocher is 60 to 65% of silica (SiO ₂ ), 10 to 13% of alumina (Al ₂ O ₃ ), and calcium oxide (CaO) 8 %, Ferrous sulfide (FeSO ₄ ) 5-6%, magnesium (Mg) 2%, sodium (Na) 2%, potassium (K) of about 1.5% natural loess.

In the above literature, loess is aimed at far-infrared radiation. However, as in the above case, when the component ratio of silica (SiO ₂ ) is higher than that of alumina (Al ₂ O ₃ ), the amount of far-infrared radiation is rather low, and alumina (Al ₂ O _{3) is used.} When the ratio of the component is higher than that of silica (SiO ₂ ), it is known that the far-infrared radiation effect is high, and thus there is a disadvantage in that sufficient radiation effect is not obtained. In addition, in the above document, since yellow soil is used in a state in which impurities such as quartz, mica, crystallization, iron emulsion, magnetite, and the like, and a viable salt and a replaceable base are mixed as it is, it is rather harmful to human body after molding into polyurethane foam. The disadvantage is that the components can be released.

The present invention was devised to solve the above problems, and the spinning polyurethane foam which can obtain a very high far-infrared emissivity by containing the spun ceramic powder processed to maximize the emissivity to the polyethylene-based polyurethane is added. The purpose is to provide.

The following drawings attached to this specification are illustrative of the preferred embodiments of the present invention, and together with the detailed description of the present invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to.

1 is a flow chart for explaining the process of producing a spinning polyurethane foam according to the present invention.

Figure 2 is a view showing a pillow made of a spinning polyurethane foam produced by the process of FIG.

<Explanation of symbols for important parts of the drawing>

100..Pillow 102..Rear 104..Front

In order to achieve the above object, the spinning urethane foam according to the present invention has a ratio of alumina (Al ₂ O ₃ ) and silica (SiO ₂ ) in natural clay, in which Al ₂ Si ₂ O ₅ (OH) ₄ is a main component. Alumina (Al ₂ O ₃ ) is added so as to be 1: 1 to 3: 1, followed by wet mixing and spinning ceramic powder obtained by calcining and pulverization is mixed with a polyether-based polyurethane, and a volatile solvent is added to the polyurethane mixture. It is produced by mixing and foaming.

Preferably, at least one of ZrO ₂ , MgO, CaO and transition metal together with the alumina (Al ₂ O ₃ ) is added to the spinning ceramic powder in a range of 20% or less.

In addition, the alumina (Al ₂ O ₃ ) is preferably added to the spun ceramic powder in the state in which impurities are removed through the separation and purification process by the sedimentation rate difference in water.

In addition, it is more preferable that the polyurethane mixture is further mixed and foamed with tourmaline in a powder state.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors will properly describe the concept of terms in order to best explain their own design. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical ideas of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a flowchart illustrating a process of manufacturing a spinning polyurethane foam according to the present invention. Referring to the drawings, the process of manufacturing the spinning polyurethane foam in the present invention is largely a process for obtaining the spinning ceramic powder (S10 to S24), and to complete the spinning polyurethane foam using the spinning ceramic powder (S26 to S42).

First, in the present invention, a polyether-based polyurethane is used as a main raw material of the polyurethane foam, and a radial ceramic powder having a far-infrared radiation function is inserted into the polyether-based polyurethane. In the present invention, the spin ceramic powder may be manufactured using an artificial ceramic, but it is preferable to process and use natural clay having excellent cost-effectiveness. In general, artificial ceramics are very expensive due to the difficult manufacturing process because of the addition of a large number of various components that make up the ceramic, such as kneading, molding, drying, firing, etc. low.

The natural clay used in the present invention generally includes Al ₂ O ₃ , SiO ₂ , TiO ₂ , Fe ₂ O ₃ , ZrO ₂ , MgO, CaO, Na ₂ O, K ₂ O and the like in common. In addition, the amount of natural clay has a different radiation amount according to the place and type. Generally, it is known that the emission amount is larger when the content of alumina (Al ₂ O ₃ ) is larger than that of silica (SiO ₂ ), and in particular, alumina (Al When the compounding ratio of ₂ O ₃ ) and silica (SiO ₂ ) is 2: 1 to 3: 1, it was found that the radiation dose of far infrared rays beneficial to the human body was the best.

Looking at the process of manufacturing the spin ceramic powder used in this aspect from this point of view, first to dilute the natural clay in water in a ratio of 1:20 (S10). At this time, it is preferable that the natural clay is Al ₂ Si ₂ O ₅ (OH) ₄ is the main component, such clay is not used for the refractory rather than the binder because there is not much plasticity compared to the wood or clay.

By the way, since natural clay generally contains various impurities, it is necessary to remove such impurities. Sedimentation method is used to remove impurities, and the clay diluted in water is allowed to settle for about 10 minutes, and impurities such as quartz, feldspar, mica, iron emulsified iron, magnetite steel, and soluble salts and substitutable bases are precipitated by specific gravity difference. The back is removed (S12).

Thereafter, to remove the water component in the clay solution from which impurities are removed, dehydration and drying are performed, and the purified clay is obtained through this process (S14).

In general, the purified natural clay is not uniformly mixed with alumina (Al ₂ O ₃ ) and silica (SiO ₂ ), and in particular, the content of silica is higher than that of alumina. Therefore, the alumina (Al ₂ O ₃ ) is added to the thus-refined clay so that the mixing ratio of alumina (Al ₂ O ₃ ) and silica (SiO ₂ ) is 2: 1 to 3: 1 in which the optimal far-infrared radiation effect is obtained. (S16).

Thus, one or two or more of TiO 2, ZrO 2, MgO, CaO, and transition metal may be additionally added to clay in which the mixing ratio of alumina (Al ₂ O ₃ ) and silica (SiO ₂ ) is adjusted (S18). Such additives serve to control the wavelength band of far-infrared rays emitted from the clay, and it is preferable to add as much as 20% or less of the weight of the purified clay.

After this addition process, the clay and the additives are mixed evenly in the stirrer (S20). In addition, the clay mixture thus mixed is then subjected to a press molding and drying process (S22), the clay dried by this process is plastically pulverized to become a spin ceramic powder (S24).

Since the produced ceramic ceramic powder is made of natural clay, the raw material cost is very inexpensive, and the mixing ratio of alumina and silica is 2: 1 to 3: 1 to adjust the optimal far-infrared emissivity. This spun ceramic powder is also used as an additive in the process of producing the spun polyurethane foam described later.

In order to manufacture the spinning polyurethane foam, first, a polyether-based low elastic high density polyurethane is injected into the chemical tank (S26). At this time, the polyurethane has a polyether-based and polyester-based, but when the polyester is used, the hardness is mainly used for industrial purposes, and in the present design, because the polyurethane foam is mainly used for bedding to be in close contact with the human body Ether is more suitable.

Thereafter, the above-described spinning ceramic powder is added to the chemical tank (S28). Since the radiant ceramic powder has already been manufactured to radiate far-infrared rays of an appropriate frequency, the far-infrared rays are radiated from the urethane foams themselves when they are made of urethane foams.

In addition, tourmaline powder may be further added to the mixture of the polyurethane and the spun ceramic powder (S30). Tourmaline is a mineral belonging to a hexagonal system, commonly referred to as an electric stone, and its chemical composition is composed of complex borosilicates of iron, magnesium, alkali metals, and aluminum. Such tourmaline has the effect of generating a permanent weak current to generate negative ions or surfactant activity, and also has the effect of emitting far-infrared radiation with a wavelength of 4 to 14 microns.

Such polyurethane and various additives are stirred for about 30 minutes to 1 hour by the stirrer in the state injected into the chemical tank to mix each drug evenly (S32).

The mixture thus mixed is then injected into a mold having an appropriate internal shape (S34) and heated to approximately 50-60 ° C. by a separate heating means. In addition, at this temperature, a volatile solvent is injected into the mold as a blowing agent (S36). As the volatile solvent, carbon dioxide or freon produced by the reaction of isocyanate with water used as a bridge binder may be used, and carbon dioxide is more preferable in consideration of environmental aspects.

In addition, another surfactant, a catalyst material, a crosslinking agent, a flame retardant, or the like may be further injected into the mold, and the content thereof is not particularly limited.

Through this process, the foam preparation process of the polyurethane and the spin ceramic powder is finished, and then the mixture is foamed through a conventional foaming process (S38). In addition, after the foaming process, the foam is cut into a predetermined shape to be cured and dried (S40), and through this aging process, a radiation polyurethane foam emitting far infrared rays is completed (S42).

The radiation polyurethane foam of the present invention produced through the above method was found to have a high far-infrared emissivity of about 0.868 in the wavelength range of 5 ~ 20 ?? m as a result of the test results commissioned by Korea Textile Testing Institute. The FT-IR measurement under the temperature condition of 占 폚 showed that it emits far infrared radiation of about 349.830 W / m ² ?? m. In addition, analysis of the radiation polyurethane foam of the present design is extracted at 37 ℃ with distilled water for 2 hours, the anion content of chloride ion (Cl ^-) 120.9ppm, sulfate ion (SO ₄ ^2-) 51.9ppm, nitrate ion ( No ₃ ^-) 9.2ppm, nitrite ions (NO ₂ ^-) 1.2ppm was found to be of about, and the results of the sample a test is extracted for 2 hours at 37 ℃ as 0.07mol / l HCL solution, lead, cadmium, antimony Heavy metals such as, chromium, mercury, arsenic, barium and selenium all showed low levels of 0.1 mg / kg or less.

In addition, according to the test results of the Korea Far Infrared Application Evaluation Research Institute, apart from the above test results, as a result of measuring a sample of the radiation polyurethane foam of the present invention, it has a high far-infrared emissivity of approximately 0.905 in the wavelength range of 5-20 ?? m. In addition, the FT-IR measurement resulted in the emission of far-infrared radiation of approximately 3.49 × 10 ² W / m ² ?? m under the temperature condition of 37 ° C., and the room temperature 23 ° C. When tested under the conditions of 44% humidity and 104 / cc of anion water in the air, the number of released anions per unit volume was 546 ION / cc. In addition, the radiation polyurethane foam according to the present invention showed that the infrared thermal measurement results are significantly superior to the general polyurethane foam, the deodorization rate also showed a high efficiency of about 70% or more. Table 1 shows the results of the deodorization rate test results for the spun polyurethane foam of the present invention. According to this table, when the spun polyurethane foam sample of the present invention was put in a 69% state after 30 minutes of curing than the blank state without the sample. It showed deodorization rate, 73% after 60 minutes, 76% after 90 minutes, and 78% after 120 minutes, and was found to be very suitable as a material in contact with the user's skin.

Test Items Elapsed time (minutes) Blank concentration (ppm) Sample concentration (ppm) Deodorization rate (%) Deodorization test Early 500 500 - 30 490 150 69 60 480 130 73 90 460 110 76 120 450 100 78

Figure 2 is a pillow made of a spinning polyurethane foam according to the present invention is shown. The pillow 100 is entirely made of spinning polyurethane foam. In addition, the pillow 100 has a structure in which the rear 102 is higher and lowers toward the front 104, and the front and rear ends 102 and 104 are manufactured in a round shape.

Such a pillow has excellent flexibility because the spinning polyurethane foam is made of polyethylene as a main component, and has a good texture. Also, since the elasticity is low, the shape of the upper surface is easily deformed according to the pressure applied by the user's head, which is very comfortable. It has the advantage of making you feel good. In addition, as described above, since the radial ceramic powder is contained in the polyurethane foam, the far infrared rays are released to the user unconsciously while the user is lying on the pillow to help with fatigue and health promotion, and in particular, tourmaline may be contained. In this case, the anion activates the skin cells of the user, strengthens the oxygen transport ability of the blood, and provides various beneficial effects such as antibacterial action.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Various modifications and variations can be made within the equivalent scope of the utility model registration claims to be described.

In particular, the present invention has described only the pillow as a use example of the spinning polyurethane foam, but not limited to the spinning polyurethane foam of the present invention is a sofa, seat, car seat, car neck support, mattress, cushion, chair, etc. It can be used in all products that are in direct or indirect contact with the human body, and at this time, the far-infrared effect by the radiant ceramic powder, the anion effect by tourmaline, and the flexibility effect by the polyether-based polyurethane can be obtained.

The spinning polyurethane foam according to the present invention is a polyether-containing spinning ceramic powder powdered by adding alumina such that the content of alumina and silica is 2: 1 to 3: 1, which is optimal for far-infrared radiation beneficial to human body. It is manufactured by mixing and foaming with a series of low-elasticity high-density polyurethane of the series has the advantage of maximizing the health promotion effect of the user by far infrared rays when manufactured for bedding in contact with the human skin.

In addition, the spinning polyurethane foam of the present invention promotes the safety of the user by preliminarily removing impurities harmful to the human body from natural clay by sedimentation method, and also promotes the health promotion effect by the anion by adding tourmaline releasing anion. There is an advantage that it can.

In addition, the pillow made of such a spinning polyurethane foam is in contact with the user's skin to provide a variety of health benefits by the release of negative ions by tourmaline as well as the far infrared effect by the ceramic ceramic powder.

Claims (6)

_{Al 2 Si 2 O 5 (OH} ) 4 of alumina in the natural clay as a main component (Al ₂ O ₃₎ with the ratio of silica (SiO ₂₎ approximately 2: 1 to 3: alumina (Al ₂ O ₃₎ so that one of Spinning polyurethane foam produced by mixing the spinning ceramic powder obtained by the addition and wet mixing, and then plastically pulverized in a polyether-based polyurethane, and mixed with a volatile solvent in the polyurethane mixture with a foaming agent and foamed. The method of claim 1, Spun urethane foam, characterized in that the at least one of ZrO ₂ , MgO, CaO and transition metal together with the alumina (Al ₂ O ₃ ) is added to the spinning ceramic powder in a range of 20% or less. The method of claim 1, Spinning urethane foam, characterized in that the alumina (Al ₂ O ₃ ) is added to the spinning ceramic powder in the state in which impurities are removed through the separation and purification process by the sedimentation speed difference in water. The method according to any one of claims 1 to 3, Spinning urethane foam, characterized in that the polyurethane mixture is further mixed and foamed tourmaline in powder form. _{Al 2 Si 2 O 5 (OH} ) 4 of alumina in the natural clay as a main component (Al ₂ O ₃₎ with the ratio of silica (SiO ₂₎ approximately 2: 1 to 3: alumina (Al ₂ O ₃₎ so that one of A pillow made of a spinning polyurethane foam produced by mixing the spinning ceramic powder obtained by adding and wet mixing and then plastically pulverizing with a polyether-based polyurethane, and mixing the foam with a volatile solvent in the polyurethane mixture. The method of claim 5, The pillow is a pillow made of a spinning polyurethane foam, characterized in that the rear 102 is high and has a shape that decreases toward the front 104.