JP2001032195A - Carbon-containing paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain carbon-containing paper that develops germicidal action and preservative action to a variety of foods and is useful as a wrapping paper that can retain the freshness of fresh foods by allowing the wrapping paper to include powdery bamboo charcoal, additionally powdery tourmaline, metallic silver, catechins, and chitosan. SOLUTION: Paper is allowed to include powder of bamboo charcoal having adsorption and deodorization effects, additionally powder of tourmaline mineral having electric polarization effect to enhance the activation of the bamboo charcoal, further silver having germicidal effect, catechins having antioxidant effect and chitosan having deodorant effect. Thus, the objective wrapping paper is obtained that can adsorb and decompose promptly the ethylene gas emitted from the vegetables and fruits to keep the fresh foods fresh.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charcoal-containing paper, and more particularly, to a charcoal-containing paper used for packaging fresh foods and other packages to maintain the freshness of the packages. It relates to paper or charcoal-containing paper used as conductive paper or insulating paper.

[0002]

2. Description of the Related Art Maintaining freshness of fresh food is an ultimate problem, and various attempts have been made for this purpose.

For example, in the case of vegetables and fruits, it has been empirically found that if the vegetables and fruits are sealed in a refrigerator or a box, the freshness is reduced by ethylene gas radiated from the vegetables and fruits. I have.

In order to solve this, in recent years,
For example, a sheet for maintaining freshness such as a sheet made of a nonwoven fabric or a sheet made of a synthetic resin has been developed, and attempts have been made to package fresh food such as vegetables with this sheet.

[0005]

However, the sheet made of non-woven fabric only utilizes the air permeability inherent in non-woven fabric.

That is, when fresh food such as vegetables is wrapped in the sheet, ethylene gas can be diffused to the outside through a non-woven fabric having good air permeability, and the ethylene gas stays as much as possible inside. This is nothing more than maintaining freshness from the passive viewpoint of avoiding the problem.

A sheet made of synthetic resin is made of a synthetic resin made of a special material through which ethylene gas can pass. Similarly to the above-mentioned nonwoven fabric sheet, when fresh food is packaged, ethylene gas is contained inside. The ethylene gas can be diffused to the outside without stagnation due to the permeability of a special synthetic resin sheet.

Therefore, in any case, the conventional sheet for maintaining freshness merely aims at maintaining freshness from the passive viewpoint of preventing the deterioration of freshness as much as possible by preventing ethylene gas from staying inside. However, it did not fundamentally solve the ultimate problem of keeping fresh food fresh.

On the other hand, various materials such as metal, synthetic resin, rubber and the like have been conventionally used as materials having conductivity or insulation, but materials using paper have not been developed yet.

The present invention has been made to solve the above problems, and has as its object to remarkably increase the freshness holding effect as compared with a conventional freshness holding sheet.

Another object of the present invention is to provide paper as a new material having conductivity and insulation.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and the means for solving the problems is to make paper contain charcoal.

As charcoal, bamboo charcoal is mainly used.
In addition, charcoal such as bamboo charcoal, bincho charcoal, and hinoki charcoal are used.

[0014] Charcoal is mainly used in the form of powder.

For example, charcoal powder of bamboo is obtained by carbonizing bamboo and pulverizing the bamboo, and the particles of the obtained powder have remarkably voids as compared with general porous substances. Many porous materials.

Incidentally, such bamboo charcoal powder is 1
The surface area is as high as 20 ares per cm ³ , which is about twice as large as that of charcoal, which is generally known as a porous material, has a surface area of 10 ares per cm ³ , which is an excellent adsorption effect. Has become a factor.

The dry distillation of bamboo is carried out, for example, in a high-pressure steam oven under the conditions of a cage pressure of 3 atm, 100 ° C. to 150 ° C., and 20 to 30 minutes.

The charcoal-containing paper of the present invention can contain tourmaline ore.

Tourmaline ore is usually called tourmaline,
It has a hexagonal crystal structure with a hardness of 7.25 and a specific gravity of 3.05.

[0020] Tourmaline ore is a polar crystal,
It has the property of causing electric polarization even without being placed in an electric field like a general dielectric.

The composition of the tourmaline ore is NaX ₃ Al
₆ (BO ₃ ) ₃ Si ₆ O ₁₈ (OH) ₄ .

Here, X is Mg, Fe, Mn, L
i means a metal element arbitrarily selected from Al. When X is Mg, it is called dravite (magnesium tourmaline). When X is Fe or Mn, it is shawl (iron tourmaline). When X is Li or Al, it is referred to as elbite (lithia tourmaline).

The charcoal-containing paper of the present invention is used, for example, for preserving freshness. The charcoal-containing paper adsorbs and deodorizes powder of bamboo charcoal, which is a porous substance, and retains freshness due to the adsorption effect of tourmaline ore by electrostatic force. Although attention has been paid to the fact that an effect is produced, by mixing the two, there is also a synergistic effect that the freshness retaining effect of bamboo charcoal can be retained semipermanently.

That is, static electricity is generated due to the property of tourmaline ore that causes electrode polarization, and this promotes the activation of bamboo charcoal.

The carbon-containing paper of the present invention can contain silver.

This silver is blended for sterilization.

Silver can be converted into an aqueous solution as silver ions and kneaded into fibers before paper production.

It is also possible to knead the fibers in the form of powder or to make them into paper and use them.

When used as silver ions, it is preferable to use it by adding it to zirconium phosphate, whereby it does not elute with water and has an antibacterial effect as compared with the case where silver ions are used alone. There is an advantage of improving.

This silver has an effect of removing static electricity in addition to a sterilizing effect. Therefore, when the object to be packaged is wrapped with the paper containing such silver, it is possible to prevent the object to be packaged and the paper from being attached carelessly due to static electricity.

It should be noted that charcoal also has such an effect of removing static electricity, and thus the combined use of charcoal and silver improves the effect of removing static electricity.

The charcoal-containing composition of the present invention may further contain catechin powder.

Catechin is a component contained in green tea and has antioxidant power.

In general, foods containing unsaturated fatty acids such as meat and oils and fats, when left in the air, are relatively easily deteriorated to reduce the flavor and generate an unpleasant odor.

Catechins include such meats, fats and oils,
It has the effect of preventing the oxidation of unsaturated fatty acids contained in seafood and the like, and maintaining freshness.

The catechins can also be contained, for example, by kneading into fibers before paper production.

The carbon-containing paper of the present invention may further contain chitosan powder.

When this chitosan powder is blended,
Good deodorizing effect.

The charcoal-containing paper of the present invention can also be used as conductive paper or insulating paper.

The properties of charcoal vary with its carbonization temperature. In particular, the change between 400 and 800 ° C is remarkable.
It has semiconductivity at ~ 800 ° C and becomes conductive above 800 ° C.

Accordingly, if the paper contains charcoal carbonized at 400 to 500 ° C., it becomes an insulating paper, and if the charcoal carbonized at 800 ° C. or more is contained in the paper, it becomes a conductive paper.

[0042]

Embodiments of the present invention will be described below.

Example 1 The composition of each compounding component in the freshness-retaining paper as one embodiment of the carbon-containing paper of the present invention is as follows. Ingredients Blending amount (wt%) Bamboo charcoal powder 20% Tourmaline ore powder 5% Silver 1% Catechin powder 1% Chitosan powder 2%

The remaining amount is an amount of a resin or the like which is a raw material of a fiber for producing paper.

Test Example 1 In this test example, the adsorption effect of bamboo charcoal powder was tested.

A 30 cm square sheet provided with bamboo charcoal powder was placed in a 40 cm square box filled with 20% concentration of trimethylamine, which is a factor such as fish odor.

The concentration of trimethylamine was 13 minutes after 10 minutes.
% After 30 minutes to 12% and 60 minutes after 10%
And after 120 minutes to 8%.

As a result, it was confirmed that the bamboo charcoal powder had a very good adsorption effect on trimethylamine.

It is recognized that this adsorption effect produces a freshness maintaining effect for fresh food such as fish.

Embodiment 2 Next, the case of manufacturing freshness-preserving paper as one embodiment will be described. First, silver powder, catechin-based powder, and chitosan powder are used as raw materials of fibers for manufacturing paper. Mixed into the resin.

[0051] Such a raw material is made into a fiber by melt spinning or the like, and a bamboo charcoal powder and a tourmaline ore powder are mixed into the fiber to form a fiber.

In this way, the fiber obtained by mixing the powder of bamboo charcoal and the powder of tourmaline ore with the powder of silver, the powder of catechins, and the powder of chitosan is mixed into a length of about 5 mm. Disconnect.

With the short fibers thus obtained,
Manufacture paper.

Test Example 2 Tuna sashimi and radish ken were wrapped with the freshness-keeping paper manufactured as in Example 2 and stored in a refrigerator.

As a comparative example, tuna sashimi and radish ken were packaged in ordinary paper and stored in a refrigerator.

Tuna sashimi and the like wrapped in the freshness retaining paper of Example 2 and the tuna sashimi and the like wrapped in the comparative example paper were placed in a refrigerator, and then removed from the refrigerator on the third day. And changes in appearance were observed.

The tuna sashimi wrapped with the freshness preserving paper of Example 2 maintained the original reddish color of the tuna with almost no discoloration. The radish Ken also had a crisp texture.

On the other hand, the tuna sashimi wrapped with the paper of the comparative example was discolored black and the body was deformed. In addition, Ken of the radish was also discolored.

Other foods such as green soybeans, tofu, peach and the like were similarly tested using the freshness retaining paper of Example 2 above, and a good freshness retaining effect was obtained.

Embodiment 3 This embodiment is an embodiment in which charcoal-containing paper is used as conductive paper.

In the conductive paper of this embodiment, silver powder is first mixed into a resin as a raw material of a fiber for producing paper, and then the raw material is made into a fiber by melt-spinning or the like. , And the fiber was cut into a length of about 5 mm to produce the fiber.

The bamboo charcoal used was carbonized at 800 degrees or more.

In the present example, paper having very good conductivity was obtained because the paper contained bamboo charcoal carbonized at 800 degrees or more.

Further, since silver is contained in addition to bamboo charcoal, conductivity is further improved.

Further, in this embodiment, since it contains bamboo charcoal carbonized at 800 degrees or more, it also has a characteristic of blocking electromagnetic waves.

Therefore, such charcoal-containing paper can be variously used for the purpose of blocking electromagnetic waves at places where OA equipment and the like are used.

For example, when used as a wall cloth, in addition to the above-mentioned electromagnetic wave blocking function, it also has the effect of adsorbing odors in the room by the deodorizing effect of bamboo charcoal and purifying air.

[Embodiment 4] This embodiment is an embodiment in which charcoal-containing paper is used as insulating paper.

The insulating paper of this example was manufactured by inserting bamboo charcoal carbonized at 400 to 500 degrees into the paper.

The charcoal of bamboo carbonized at 400 to 500 degrees has insulating properties. Therefore, the insulating paper of this embodiment can be used as a substitute for various insulating materials.

[Other Examples] In Example 1, the above-mentioned components were blended as the components blended in the bamboo charcoal-containing paper, but it is essential for the present invention to blend all the above-mentioned components. Not a condition.

The point is that bamboo charcoal should be contained.

Further, in each of the above embodiments, bamboo charcoal powder is used, but the properties of bamboo charcoal are not limited to powdery ones.

Further, the type of charcoal is not limited to the bamboo charcoal of this embodiment. For example, bamboo charcoal, Bincho charcoal, and hinoki charcoal can also be used.

The point is that porous charcoal may be used.

In addition to the components of Example 1,
For example, it is also possible to mix an extract of Kumagasa.

When this is blended, the effect of maintaining freshness becomes better.

Further, the freshness retaining paper of Example 1 can further contain powder of green bamboo skin.

The green bamboo skin powder has a strong bactericidal and deodorizing power.

Although it can be used as it is, when it is carbonized, its deodorizing power increases.

It is also possible to mix a bamboo vinegar solution for neutralization.

That is, since only bamboo charcoal powder, tourmaline ore powder, and catechin powder become strongly alkaline, an acidic bamboo vinegar solution is blended to maintain the pH at about 6.8 to 7.

In Example 2, silver powder, catechins powder, and chitosan powder were mixed into a resin as a raw material of a fiber for producing paper, and then the raw material was mixed with the fiber by melt spinning or the like. After that, the powder of bamboo charcoal and the powder of tourmaline ore were mixed and made into a paper, but the procedure and means for including the same in paper are not limited to the examples.

For example, bamboo charcoal can be contained by mixing and kneading into resin as a raw material of fiber.

However, in consideration of the difference in specific gravity of each of the components, it is preferable that the components of the above-mentioned examples are contained in the same manner as in the above-mentioned examples.

Further, in the above embodiment, the fiber was cut into a length of about 5 mm for use, but the fiber length is not limited to this embodiment.

When used as wrapping paper for maintaining freshness, examples of wrappings include ham, pickles, gyoza,
Examples include cakes, Japanese sweets, and other fresh foods.

However, it is also possible to use it for packaging objects other than food.

When used as wrapping paper, there is an advantage in that even if a large number of components are contained as in the above embodiment, printing is possible by making the paper white.

However, it is also possible to use it for packaging other than foods.

When used as a wrapping paper, there is an advantage that even if a large number of components are contained as in the above embodiment, printing is possible by making the paper white.

Further, in the above embodiment, the case where the charcoal-containing paper of the present invention is used for maintaining freshness has been described. However, the use of the charcoal-containing paper of the present invention is not limited to this, and it is not limited to this. It is also possible to use it as wrapping paper for the purpose.

Further, in addition to the use as a wrapping paper, it can be used, for example, as an oil removing paper or a face pack.

When used in these applications, since it comes into contact with the skin, from the viewpoint of protection against wrinkles, freckles, etc., it is also possible to add molasys liquid extracted from sugar cane molasses. .

It is also possible to mix a component called placenta extracted from the placenta of animals such as cattle.

Further, as an application of the present invention, it is also possible to apply the present invention to conductive paper or insulating paper as in the third and fourth embodiments.

In the third embodiment, since the conductive paper contained silver, a favorable effect of further improving the conductivity was obtained. However, the inclusion of silver is not a condition.

Although the conductive paper of Example 3 and the insulating paper of Example 4 contained bamboo charcoal, charcoal other than bamboo, such as charcoal, bamboo charcoal, and bincho charcoal, can also be used. It is.

In any case, the use of the carbon-containing paper of the present invention does not matter.

Further, when the paper is used for various uses, it can be formed into various shapes according to the use.

For example, when used as wrapping paper, it may be formed in a sheet shape or in a bag shape.

Further, when used as oil removing paper, it can be formed into a glove shape in addition to a sheet shape. In this case, it is worn on a hand and touches each part of the face as it is. There is an advantage that the same purpose as that of general oil removing paper can be achieved and the operation is simplified.

[0103]

As described above, since the paper of the present invention contains charcoal, when such paper is used for maintaining freshness, fresh paper such as vegetables can be produced using the paper. When fruits or fruits are wrapped or placed, ethylene gas emitted from vegetables and fruits is quickly adsorbed and decomposed by the powder of porous charcoal, especially bamboo charcoal. Since the ethylene gas, which was considered to be the cause of the decrease, can be decomposed, the freshness retaining effect is remarkably improved as compared with the conventional freshness retaining sheet which simply diffuses or permeates the ethylene gas to the outside.

Further, bamboo charcoal powder has a bactericidal action and an antiseptic action, so that it can be effectively used for preventing corrosion of various foods. In the case of the food, there is an effect that it can be used as wrapping paper in addition to preventing corrosion and maintaining freshness, thereby contributing to an improvement in commercial value.

Further, since it also has a deodorizing effect due to the adsorption effect of the bamboo charcoal powder, the odor of fresh food which causes a decrease in freshness can be suitably removed.

Further, due to the adsorption effect of bamboo charcoal, there is an effect that when used as a face pack or oil removing paper, for example, oils and fats on the skin and extraneous substances can be suitably removed.

Further, an excellent deodorizing effect can be obtained by the adsorption effect of bamboo charcoal. Therefore, it can be used for various uses for deodorization.

For example, it can be used for adsorption decomposition of formaldehyde and the like.

Further, when the tourmaline ore powder is blended together with the bamboo charcoal powder adsorption effect, the electric action also controls the moisture quality of the fresh food, which further enhances the freshness preserving effect. It is supposed to be.

Further, when catechins are contained, the oxidation of unsaturated fatty acids contained in meat, fats and oils, seafood and the like can be prevented, the antioxidant power can be increased, and spoilage of fresh foods can be suitably prevented. There is an effect that it can be prevented.

Further, when silver is contained, there is an effect that the bactericidal effect is improved.

[0112] Further, conductive paper or insulating paper can be provided by incorporating charcoal whose carbonization temperature is adjusted into paper, and a conductive material or insulating material which is inexpensive and has good workability compared to conventional materials can be obtained. be able to.

Further, since the carbonization temperature of the charcoal is adjusted to have the characteristic of blocking electromagnetic waves, it can be used for a variety of purposes to block electromagnetic waves at places where OA equipment and the like are used. Become.

Further, when used as a wall cloth, for example, in addition to the above-mentioned function of blocking electromagnetic waves, it also has the effect of adsorbing odors in the room by the deodorizing effect of bamboo charcoal and purifying the air. There is an effect that a wall cloth having remarkably superior characteristics can be provided.

Claims (7)

[Claims] 1. A charcoal-containing paper containing charcoal. 2. The charcoal-containing paper according to claim 1, wherein the charcoal is bamboo charcoal. 3. The charcoal-containing paper according to claim 1, wherein the charcoal is a powder. 4. The charcoal-containing paper according to claim 1, wherein the paper contains tourmaline ore. 5. The charcoal-containing paper according to claim 1, wherein the paper contains silver. 6. The charcoal-containing paper according to claim 1, which contains catechins. 7. The charcoal-containing paper according to claim 1, which contains chitosan.