JP3069841B2 - Far-infrared radiator-containing Japanese paper and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing far-infrared radiator-containing washi paper, and to far-infrared radiator-containing washi paper made by the production method. On the top surface of undried base Japanese paper made by circular mesh from the suspension suspended in the ratio of
A method of paper-making far-infrared radiator-containing Japanese paper having a characteristic feature in that undried patterned Japanese paper made by short netting from highly viscous water sludge is pressed and dried as it is, and far-infrared radiation obtained by this method It is related to body-containing Japanese paper.

[0002]

2. Description of the Related Art In recent years, the details of the mechanism of action of far-infrared rays have not yet been elucidated, and there are many unclear points.
It is considered to be effective for food-related applications such as food ripening and color improvement because it exhibits an ionizing effect when passing through substances.Beddings and clothing are used as far-infrared cotton. As an anti-warm product, it is used as an effective health care product for skin protection such as stiff shoulders and low back pain or for recovery from fatigue because the surface of the skin is warmed by far-infrared rays and blood flow to peripheral blood vessels increases. Applications are considered.

An electromagnetic wave called far-infrared rays is a radiant heat ray, which can directly heat only an object to be irradiated, and is widely used as a heat source for an infrared stove, an infrared stove, an infrared kotatsu, and the like. Then, since electromagnetic waves called far-infrared rays penetrate into the irradiated object, the inside can be heated without unnecessarily increasing the surface temperature. For example, firewood
It is an example of that it is said that cooking with charcoal makes it possible to cook delicious food that goes well on fire.In addition, a method of baking the potato to the inside without raising the surface temperature of the potato more than necessary, such as a stone potato And the method of baking the inside of a hard shell like Tianjin sweet chestnut is a heating cooking method using far infrared rays radiated from heated stones, all of which are found empirically by the predecessor. It is also the wisdom of living.

As a material that efficiently radiates electromagnetic waves in the far-infrared region, far-infrared radiation ceramics represented by alumina-based ceramics and gyricon-based ceramics are known, and are formed by adding platinum as an additive to alumina and silica. Powders for far-infrared radiation are also known (JP-A-62
-184088).

[0005] In the conventional Japanese paper, an attempt has been made to make Japanese paper containing a far-infrared radiator and to utilize the freshness retaining properties, antibacterial properties, etc. of foods having far-infrared radiation constantly emitted from the Japanese paper. It is desired to develop a far-infrared radiator-containing Washi paper in which the far-infrared radiator is uniformly supported, retains the texture of Japanese paper as it is, and is excellent in air permeability, processability, deformation after processing, and the like, and a method for producing the same. I was

[0006]

Heretofore, as a method for producing Japanese paper containing such a far-infrared radiator, a sludge obtained by mixing and mixing a glue such as smelt, aoi, etc., with Japanese paper fibers, such as mulberry, mitsu or goose. And a method in which a fine powder of a far-infrared radiator is adhered and supported on the surface of the paper-made Japanese paper.

However, according to the conventional method for producing washi paper, sludge obtained by mixing and mixing fine powder of a far-infrared radiator with sludge mainly containing washi fiber and a sizing agent is produced. Even if you create radiator-containing Japanese paper,
Japanese paper in which the fine powder of the far-infrared radiator was uniformly dispersed could not be produced. The reason is,
This is because the fine powder of the far-infrared radiator aggregates to form a lump, or sludge in which the fine powder of the far-infrared radiator is uniformly dispersed could not be adjusted.

On the other hand, according to the method of adhering and carrying the fine powder of the far-infrared radiator on the surface of the paper made of paper, the product Washi loses the texture that seems to be Washi, and has good air permeability and processability.
Only Japanese paper, which is difficult in terms of deformation after processing, could be created. There are also problems such as the inability to carry the far-infrared radiator uniformly, the increase in cost, and the inability to carry out mass production.

The present invention has been intensively developed in view of such circumstances, and a problem to be solved is to solve the above-mentioned problems of the conventional manufacturing method.
The purpose of the invention is, in particular, to provide a method for producing washi paper containing fine powder of, for example, a ceramic far-infrared radiator and having antibacterial far-infrared radiation characteristics. The purpose is to provide inexpensively Japanese paper to which characteristics have been added.

[0010]

The measures taken by the present invention to solve the above-mentioned problems are as set forth in the appended claims.

[0012] The invention according to claim 1 is a method for mechanically paper-making Japanese paper containing a far-infrared radiator, wherein the pulp is formed from a suspension suspended at a ratio of 3% by weight with respect to the whole by a circular net. A method for making far-infrared radiator-containing washi paper, in which the upper surface of the undried base Japanese paper is dried by pressing the undried patterned washi paper made with a short net from highly viscous water sludge and drying as it is, The total amount of the water sludge is 7.
4% by weight of chemically treated plant fiber and 0.3 % in total
7% by weight of a paste and 0.02 to 0.74% by weight of a fine powder of a far-infrared radiator mixed and mixed, and a method for making Japanese paper containing far-infrared radiator " The invention according to claim 2 describes “the method for producing far-infrared radiator-containing Japanese paper according to claim 1, wherein the far-infrared radiator is a ceramic far-infrared radiator”. This is the gist.

According to the method for producing far-infrared radiator-containing Japanese paper according to the first or second aspect of the present invention, a far-infrared ray is first used when mixing and mixing the Japanese paper fiber and the sizing agent. A uniform sludge can be adjusted while preventing the radiator from agglomerating into a lump, and a Japanese paper in which the far-infrared radiator is uniformly dispersed throughout can be produced.

[0014]

Further, Japanese paper which can always emit far-infrared rays having the freshness preserving property and antibacterial property of the food, maintain the texture like Japanese paper as it is, and is excellent in air permeability, processability, deformation after processing, etc. Can be made.

[0016] Next, the invention according to claim 3 is based on "an undried base paper made from a suspension obtained by suspending pulp at a ratio of 3% by weight with a circular net, A machine-fabricated far-infrared radiator-containing Japanese paper obtained by pressing undried patterned Japanese paper formed by short netting from highly viscous water sludge and drying the paper as it is, wherein the water sludge is 7% in total. 0.4% by weight of chemically treated vegetable fiber, 0.37% by weight of total sizing agent and 0.02 % by weight of total
The invention according to claim 4, wherein the far-infrared radiator-containing Japanese paper is obtained by mixing and mixing 0.74% by weight of a fine powder of a far-infrared radiator. Is a ceramic far-infrared radiator, wherein the far-infrared radiator-containing Japanese paper according to claim 3 is the gist of each.

According to the far-infrared radiator-containing Japanese paper according to the third and fourth aspects of the present invention, the far-infrared radiator can be used even if the washi fiber and the paste are mixed and mixed. Since it is not agglomerated into a lump, and is thus made from uniform sludge, it is a Japanese paper in which the far-infrared radiator is uniformly dispersed throughout.

[0018]

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments that embody the present invention, but the present invention is not limited to the following embodiments.

The far-infrared radiator is not particularly limited as long as it emits far-infrared rays having freshness preserving properties and antibacterial properties of food. Even if it is made of a ceramic such as zirconia, titania or alumina, cordierite ( 2MgO ・ 2
Al ₂ O ₃ .5SiO ₂ ), β-spodumene (Li _{2
O · Al 2 O 3 · 4SiO} 2), or even titanate aluminum _{(Al 2 O 3 · TiO 2} ) a ceramic mainly composed, manganese oxide _(MnO 2), iron oxide _{(Fe 2 O} 3), Even if the transition element oxide-based ceramic is mainly composed of a transition element oxide such as copper oxide (CuO) or cobalt oxide (CoO), the cordierite,
Beta-spodumene, a ceramic mainly composed of aluminum titanate using the above transition element oxide as an agent, or a mixture of these may be used, but its handling and preservation of food freshness In consideration of activity and antibacterial activity, it is preferable to select from transition element oxide-based ceramics.

The far-infrared radiator has a particle size of 0.1.
001 μm (non-surface area of 100 to 200 m ² / g), the surface of which is pulverized into ultrafine powder having a rough surface with large irregularities, and can be uniformly dispersed without agglomeration in an adhesive described later. It is easy to uniformly adhere and carry on the surface of the washi fiber, and has a large surface area for radiating electromagnetic waves and high surface activity.

The amount of the far-infrared radiator adhered and carried on the Japanese paper fiber can be appropriately selected by changing the concentration of the salt solution. If the amount of the far-infrared radiator carried on the washi fiber is too small, the antibacterial activity and the freshness maintaining activity of the food will be weakened, and if the amount of the far-infrared radiator is too large relative to the amount of the washi fiber, it will be carried on the washi fiber. It is not preferable because it may exist in a free form without being able to be removed. The amount of the far-infrared radiator supported on the washi fiber is 0.02 to 30 by weight based on the washi fiber.
%, Preferably from 0.2 to 10% by weight.

The adhering agent is used for holding fine powder of the far-infrared radiator on the washi paper fiber, and is capable of uniformly and harmlessly adhering the far-infrared radiator not in an aggregated state. It may be a natural substance or a chemical adhering agent, but is preferably selected from those which are water-soluble if possible. Such water-soluble adhesives include, for example, monovalent or divalent fatty acids and salts or derivatives thereof, polysaccharides and derivatives thereof, and more specifically, sodium aspartate, glutamic acid, sodium glutamate, sodium lactate. ,
Examples thereof include carboxylate salts such as potassium sorbate, sodium tartrate, sodium carboxymethylcellulose, potassium alginate and ammonium alginate, and starch.

In the present invention, the paste used for making Japanese paper is not particularly limited. Far-infrared radiator-containing Japanese paper fibers can be made into sludge homogeneously dispersed without agglomeration as long as they are harmless,
It is selected from those that are water-soluble. Such a water-soluble sizing agent may be substantially the same as the above-mentioned adhering agent, besides those which have been widely used for a long time, such as a trolloom extract.

If necessary, the sludge may contain a plasticizer such as dibutyl phthalate, dibutyl adipate, dioctyl adipate, triacetin, a deicing agent such as ethylene glycol, propylene glycol, ethanol, etc. Agents, antistatic agents, anti-adhesion agents, fluorescent dyes, pigments and the like can also be mixed.

In the present invention, the compounding ratio of the far-infrared radiator-containing Japanese paper fiber and the sizing agent varies depending on the papermaking conditions, and it is necessary to appropriately set appropriate conditions. If the blending ratio of the far-infrared radiator-containing fiber and the sizing agent is more than 10: 1, the effect of fixing the fiber tends to decrease, and if the blending ratio is less than 1:10, the antibacterial performance and the freshness of the food are reduced. Retention tends to decrease.

By the way, the far-infrared radiator-containing Japanese paper of the present invention can be formed by a mechanical papermaking method. First, 2 kg of the sizing agent, 500 kg of water, 2 kg of the above-mentioned paste, were placed on the upper surface of an undried base paper made of circular paper from a suspension in which pulp was suspended at a ratio of 3% by weight based on the whole. 40kg fiber,
When 2 kg of fine powder of far-infrared radiator is mixed and mixed, the undried patterned Japanese paper fiber made by short netting from a highly viscous sludge is pressed together, and both remain undried and the sludge contains a paste. Therefore, both can be adhered to each other by this paste, and if this is dried as it is, a type of far-infrared ray radiator-containing Japanese paper called so-called Yunlong Japanese paper can be manufactured. Even if fine powder of the far-infrared radiator is mixed and mixed with the suspension in which the pulp is suspended at a ratio of 3% by weight based on the whole, the far-infrared radiator sediments downward, so that the final product It was difficult to impregnate the entire washi paper with the far-infrared radiator.

[0028]

EXAMPLES In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the present invention will be described below. The far-infrared radiator used in the following examples was 39% by weight of aluminum oxide (Al ₂ O ₃ ).
And 46% by weight silicon oxide (SiO ₂ ) and 0.4% by weight
It is an ultrafine ceramic powder obtained by firing a mixed kneaded product containing iron oxide (Fe ₂ O ₃ ) and then pulverizing the mixture to a particle size of 0.01 μm or less.

First, the washi fiber containing the far-infrared radiator is 5
% Carboxymethylcellulose (trade name “Cellulogel WS-C”) solution, and 5 L of this adhesive 2
5 g and 30 g of the far-infrared radiator were added and dispersed well, 50 g of chemically treated plant fiber was added, rubbed well for 2 minutes, then dehydrated, and then dried outdoors on a sunny day to prepare.

The far-infrared radiator-containing Japanese paper of Example 1 was 1
A trolley mallow extract solution was added to 0% by weight of the above-mentioned far-infrared radiator-containing Washi fiber suspension and mixed to form sludge, which was hand-sheeted according to a conventional method (FIG. 1). It should be noted that Japanese paper made from sludge containing no far-infrared radiator in the same manner as above was used as Comparative Example 1.

The far-infrared radiator-containing Japanese paper of Example 2 was 1
A sludge obtained by adding a trolley mallow extract to 0% by weight of the suspension of far-infrared radiator-containing Japanese paper fiber and mixing the sludge was hand-made on the surface of Comparative Example 1 (FIG. 2). It should be noted that a sludge made by adding the trolley mallow extract to the suspension of the washi fiber without adding the far-infrared radiator and mixing the sludge with the same method as described above was used as Comparative Example 2.

The far-infrared radiator-containing Japanese paper of Example 3 was 1
A sludge obtained by adding a trolley mallow extract to 0% by weight of the above-mentioned far-infrared radiator-containing Washi fiber suspension and mixing the sludge is made twice (FIG. 3). In addition, the sludge obtained by adding the trolley mallow extract to the suspension of the washi fiber without adding the far-infrared radiator and mixing the sludge twice was produced by the same method as described above, and the paper was used as Comparative Example 3.

The washi paper containing the far-infrared ray radiator of Example 4 was prepared by adding a trolley-oil extract to the washi fiber suspension without adding 30 g of the far-infrared ray radiator to form a sludge. In addition, sludge made by adding and mixing a trolley mallow extract to a 10% by weight far-infrared radiator-containing Washi fiber suspension is patterned and made into a paper, and is called so-called Yunlong Japanese paper (FIG. 4). It should be noted that so-called Yunlong Japanese paper was prepared as Comparative Example 4 in which sludge obtained by adding the trolley mallow extract to the Japanese paper fiber suspension and mixing without adding the far-infrared radiator at all was formed in the same manner as described above.

Next, the following antibacterial tests were performed on each of the Japanese paper of Examples 1 to 4 and the Japanese paper of Comparative Examples 1 to 4. (1) Drop method: Bacterial solution is dropped on the sample,
After storage for a time, the number of viable bacteria on the sample is calculated. First, the lower portion of each bacterial cell was tested on a normal agar medium (Nippon Pharmaceutical).
After culturing at 18 ° C. for 18 to 24 hours, the strain is suspended in a sterilized solution containing broth (dissolved 0.3 g of dried broth in 1 L), and adjusted to about 10 ⁴ CFU (colony formation unit) / mL. did. Then, 0.2 mL of the test bacterial solution was dropped on the Japanese paper of Examples 1 to 4 and Examples 1 to 4. After 24 hours or 48 hours of storage, the dropped bacterial solution was poured into a Petri dish with 0.8 mL of phosphate buffered saline. The number of viable bacteria in this solution was determined by using a pour plate culture solution (37 ° C., 2
4 hours) and converted to a CFU value per mL. Table 1 shows the results.

As is clear from Table 1, in the Japanese paper of Comparative Examples 1 to 4, both Escherichia coli and Staphylococcus aureus proliferate in large amounts, whereas according to the Japanese paper of Examples 1 to 4, Bacteria are also remarkably prevented from growing, and it can be seen that excellent antibacterial performance can be exhibited.

By the way, the present invention is not limited to the first to fourth embodiments. For example, the present invention is applied to a case where a washi paper containing a far-infrared radiator is integrally formed on both front and back surfaces of a washi paper containing no far-infrared radiator. The design can be changed as appropriate without departing from the spirit of the invention.

[0037]Table 1 Sample storage time E. coli Staphylococcus aureus Example 1 24 7 1.8 × 10²  48 5 1.3 × 10¹  Comparative Example 1 24 10 1.6 × 10⁶  48 10 1.8 × 10⁶  Example 2 24 6 3.5 × 10¹  486 1.1x10¹  Comparative Example 2 24 10 1.6 × 10⁶ 48 10 1.9 × 10⁶  Example 3 24 4 2.9 × 10¹  485 1.5x10¹  Comparative Example 3 24 10 1.7 × 10⁶  48 10 2.0 × 10⁶  Example 4 24 6 2.9 × 10²  486 3.4 x 10¹  Comparative Example 4 24 10 1.7 × 10⁶ 48 10 2.1 × 10 ⁶

[0038]

As described above, according to the method for producing far-infrared radiator-containing Japanese paper of the present invention, it is possible to form far-infrared radiators uniformly on the entire surface of the washi paper. It has an excellent effect that hygienic antibacterial Japanese paper such as Unryu Washi can be produced without using any special means.

Next, according to the far-infrared radiator-containing Japanese paper obtained by the production method of the present invention, the final product as the final washi, which emits far-infrared rays continuously or entirely, on the surface of the Japanese paper. Since the infrared radiator is uniformly dispersed and supported, it can constantly emit far-infrared rays with food freshness-retaining properties, antibacterial properties, etc., and it retains the texture of Japanese paper as it is, and has breathability, processability, and after processing. It is possible to provide inexpensively high-quality Japanese paper containing a far-infrared radiator that is excellent in deformation of the paper.

[Brief description of the drawings]

FIG. 1 is an enlarged vertical sectional view of a far-infrared radiator-containing Japanese paper of Example 1.

FIG. 2 is an enlarged vertical sectional view of a far-infrared radiator-containing Japanese paper of Example 2.

FIG. 3 is an enlarged longitudinal sectional view of a far-infrared radiator-containing Japanese paper of Example 3.

FIG. 4 is an enlarged vertical sectional view of a far-infrared radiator-containing Japanese paper of Example 4.

[Explanation of symbols]

 1: Far-infrared radiator-containing layer

Claims (4)

(57) [Claims] 1. A paper-making method for mechanically paper-making Japanese paper containing a far-infrared radiator, comprising the steps of: forming a paper web from a suspension of pulp suspended in a ratio of 3% by weight with respect to the whole; A method for making far-infrared radiator-containing Japanese paper, in which an undried patterned Japanese paper made by short netting from highly viscous water sludge is pressed onto the upper surface and dried as it is, wherein the water sludge is 7% in total. 0.4% by weight of chemically treated vegetable fiber and 0.37% by weight of sizing agent,
A far-infrared radiator-containing paper made by mixing and mixing 0.02 to 0.74% by weight of a fine powder of a far-infrared radiator with respect to the whole. 2. The method for producing far-infrared radiator-containing Japanese paper according to claim 1, wherein the far-infrared radiator is a ceramic far-infrared radiator. 3. A paper made from a suspension of pulp suspended at a ratio of 3% by weight based on the whole net, and a short net made from highly viscous water sludge formed on an upper surface of an undried base Japanese paper. A machine-fabricated far-infrared radiator-containing washi paper obtained by pressing undried patterned washi paper and drying it as it is, wherein the water sludge contains 7.4% by weight of chemically treated plant fibers and 100 wt. , 0.37% by weight of the paste based on the whole,
A far-infrared radiator-containing Japanese paper, which is mixed and mixed with a fine powder of a far-infrared radiator of 0.02 to 0.74% by weight based on the whole. 4. The far-infrared radiator-containing Japanese paper according to claim 3, wherein the far-infrared radiator is a ceramic far-infrared radiator.