KR102412186B1 - Paper for antibacterial fruit bag using illite and manufacturing method of antibacterial fruit bag using same - Google Patents

Abstract

The present invention relates to a paper for fruit bag using illite and a method for manufacturing an antibacterial fruit bag using the same. It relates to an antibacterial fruit bag in which a coating layer containing a fat and oil emulsion is formed.
The antibacterial fruit bag of the present invention is to prepare a base paper for fruit bags by mixing the illite powder or extract water extracted from the illite component when manufacturing the base paper using the pulp, and coating the base paper with a coating material to make the fruit bag.
The antibacterial fruit bag of the present invention can preserve fruit safely compared to the existing fruit bag treated with sterilization and insecticide, and has excellent antibacterial properties to reduce the occurrence of diseases occurring in fruit, and it is eco-friendly, so it does not cause environmental pollution, Fruits grown or stored in these fruit bags are safe as eco-friendly agricultural products, and thus have the effect of improving product value.

Description

Paper for antibacterial fruit bag using illite and manufacturing method of antibacterial fruit bag using same {.}

The present invention relates to an antibacterial fruit bag paper using illite and a method for manufacturing an antibacterial fruit bag using the same. for making bags.

In general, the use of fruit bags is used for the purpose of increasing profits by protecting a certain period of fruit from scratching, sunburn, and pests and furthermore, by controlling the harvest time by controlling the coloration, and by increasing the commercial value by improving the aesthetics of the fruit. are doing

To this end, the fruit bag prevents damage from pathogens or pests after coating by mixing chemical disinfectants, pesticides, and pesticides with the coating solution in the bag to protect the growing fruit, while covering the fruit bag to reduce scratch damage and reduce pests and pests It prevents sunburn, which is a phenomenon in which the skin is burned by strong sunlight, and controls the harvest time of fruits.

In particular, apple bags among fruit bags can induce even coloration of the entire fruit by suppressing the discoloration of the skin until harvest, then peeling the outer bag 30-40 days before harvest and peeling the inner bag 7 days before harvest.

At the same time, since the temperature and humidity in the fruit bag are appropriately controlled to promote or inhibit the growth of fruit, the time of shipment can be controlled, thereby increasing the income of farmers through high-quality fruit production.

Domestic Patent Publication No. 10-1056177 discloses a composition related to an antibacterial mineral light bag and a manufacturing method thereof. The method for manufacturing a fruit bag containing an antibacterial inorganic material disclosed in the above patent is an inorganic material having antibacterial properties on the base coated with any one selected from paraffin wax, paraffin wax emulsion, fat and oil and oil emulsion, lime sulfur compound, lime Bordeaux liquid, sulfur, Any one mineral selected from quicklime and slaked lime is sprayed on the fruit bag, and then dried and pressed to prevent the inorganic substance from desorbing.

In addition to the above-described action, fruit bags are widely used as important agricultural materials for producing high-quality fruits by increasing the sugar content of fruits and preventing the peels from bursting.

On the other hand, the core of orchard cultivation technology is the battle against pests and diseases, so many chemicals such as fungicides, pesticides and pesticides are used during the orchard cultivation period. Therefore, by using a fruit bag, pesticides that come in direct contact with the fruit can be blocked, but in order to protect the fruit from diseases and pests, when manufacturing the bag, chemical fungicides, pesticides, and pesticides are mixed with the raw materials to prevent the spread of pests to the fruit inside the bag. to prevent it. However, there is a problem with the safety of the pesticide because the pesticide of the fruit bag remains on the peel.

In order to fundamentally solve this problem, it is required to use inorganic substances with excellent antibacterial and insecticidal properties that are used in eco-friendly farming methods that can replace the efficacy of pesticides such as chemical disinfectants and pesticides in the production of fruit bags.

In addition, if an antibacterial fruit bag can be used not only during cultivation, but also when storing or shipping to the market, the fruit bag can be used continuously, making it eco-friendly and economical.

Domestic Patent Publication No. 10-1056177 (August 04, 2011)

The present invention is to solve the above problems by manufacturing an antibacterial fruit bag base containing an illite component, and using the antibacterial fruit bag when growing or storing fruits, thereby preventing fruit spoilage and prolonging the storage period. in order to be able to do it.

In addition, when an antibacterial fruit bag using illite is used, the humidity inside the fruit bag can be kept constant or the fruit can be kept fresh by preventing over-humidity.

In addition, the antibacterial fruit bag using Illite extends the storage period of the fruit and increases the freshness so that it can be sold at a high price in the market.

In order to achieve the above object, the antibacterial paper for fruit bags using illite and the method for manufacturing an antibacterial fruit bag using the same of the present invention are first prepared by mixing illite powder or illite extract water with pulp to prepare a base paper for fruit bags. do. That is, 1 to 5 parts by weight of Illite powder or 1 to 10 parts by weight of Illite extract water is mixed with 100 parts by weight of the pulp stock solution for the antibacterial base paper for fruit bags using Illite to prepare a base paper for fruit bags.

It is preferable to mix the illite powder pulverized to a size of 0.001 to 100 μm with the pulp as the illite powder mixed into the pulp when preparing the antibacterial base paper for fruit bags.

When preparing the antibacterial base paper for fruit bags, the illite extract water mixed with the pulp is mixed with 100 parts by weight of water and 5-30 parts by weight of illite powder having a size of 0.01 to 500 μm, followed by immersion for 24 to 72 hours. It is prepared by mixing.

In addition, the antibacterial fruit bag is manufactured using the base paper for the antibacterial fruit bag, and a coating layer is formed by coating one side of the antibacterial fruit bag circle with a coating material. As the coating material, the coating material is coated with a coating material containing one of paraffin wax, paraffin wax emulsion, oil and fat emulsion, and the coating material coated on the base paper for antibacterial fruit bags is 0.00001 to 0.01 parts by weight in 100 parts by weight of the base paper for antibacterial fruit bags. Coating is preferred.

The present invention relates to an antibacterial fruit bag paper using illite and a method for manufacturing an antibacterial fruit bag using the same. there is

That is, the present invention prepares a fruit bag base with illite powder containing an antibacterial component, and allows it to be used as a fruit bag, thereby preventing fruit spoilage when growing or storing fruit with an antibacterial fruit bag, and shortening the storage period. It has a long-lasting effect.

In addition, the antibacterial fruit bag using Illite has the effect of increasing the income of fruit growers by extending the storage period of the fruit and enhancing the freshness of the fruit by selling it at a high price in the market.

In addition, it has the effect of increasing the export of Korean fruits by increasing the quality of domestic fruits.

Hereinafter, the present invention will be described in detail.

The present invention is to prepare a base paper for an antibacterial fruit bag using illite having an antibacterial component, and to manufacture an antibacterial fruit bag using the base paper.

Illite is a mineral mainly produced in Yeongdong-gun, Korea, and is known for its excellent antibacterial properties.

The chemical composition of illite is SiO2, Li, Al2O3, Cr, Fe2O3, TiO2, Ni, MgO, Cu, MnO, Zn, CaO,Ga, Na2O, Sr, K2O,P205 and L. SiO2 (silicon oxide) is effective in removing impurities and excess sebum in the pores, Al2O3 (alumina) promotes blood circulation, Fe2O3 (iron oxide) acts on collagen binding, and CaO (calcium) has a detoxifying effect. And because it is effective for mental action, it suppresses or relieves stress, and Na O (sodium) regulates osmotic pressure. Moisture control, MgO (magnesium) promotes excretion of waste products. It works for collagen binding. That is, Illite has effects such as cell activation function, metabolism promotion function, aging function, and anion generation.

The antibacterial base paper for fruit bags is prepared by mixing Illite powder or Illite extract water when manufacturing pulp. Pulp is produced by pulverizing wood to produce paper, and 1 to 5 parts by weight of illite powder or 1 to 10 parts by weight of illite extract water is mixed with 100 parts by weight of the pulp stock solution to prepare a base paper for fruit bags. When the illite powder is mixed less than this, the antibacterial effect is reduced, and when the illite powder is mixed excessively, the texture of the fruit bag is deteriorated and the coating of the coating material may be difficult.

It is preferable to mix the illite powder pulverized to a size of 0.001 to 100 μm with the pulp as the illite powder mixed into the pulp when preparing the antibacterial base paper for fruit bags.

When preparing the antibacterial base paper for fruit bags, the illite extract water mixed with the pulp is mixed with 100 parts by weight of water and 5-30 parts by weight of illite powder having a size of 0.01 to 500 μm, followed by immersion for 24 to 72 hours. It is prepared by mixing. If the size of the illite powder is small when extracting the illite extract water, it is easy to extract the illite component, but there is a problem in that excessive cost occurs in the powder manufacturing process. In addition, when the amount to be mixed with the illite powder is 5 parts by weight or less, there is a problem in that the extraction of the illite component is insufficient and the antibacterial effect is lowered.

In addition, the antibacterial fruit bag is manufactured using the base paper for the antibacterial fruit bag, and a coating layer is formed by coating one side of the antibacterial fruit bag circle with a coating material. As the coating material, the coating material is coated with a coating material containing one of paraffin wax, paraffin wax emulsion, oil and fat emulsion, and the coating material coated on the base paper for antibacterial fruit bags is 0.00001 to 0.01 parts by weight in 100 parts by weight of the base paper for antibacterial fruit bags. Coating is preferred.

In addition, the antibacterial fruit bag of the present invention can be prepared by adhering the illite powder to one or both sides of the conventional fruit sachet paper. In this case, the illite powder powder having a size of 0.0001 to 0.1 μm is used.

When manufacturing antibacterial fruit bags using Illite powder on paper for fruit bags as described above, the fruit is added to a mixture of 100 parts by weight of water or alcohol, 20-40 parts by weight of a water repellent, and 50-100 parts by weight of Illite extract water. After immersing the paper for sealing, drying, and coating a coating material on one side to prepare an antibacterial fruit bag.

In this case, when manufacturing the fruit bag, the antibacterial effect is good to coat the illite powder particles having a size of 0.0001 to 0.1 μm.

<Pulp Manufacturing>

Pulp is a material extracted from fiber plants such as trees to make paper. Various types of wood are used as raw materials for paper, and among them, the most used softwood is about 50% cellulose, and 25% lignin, 20% pentosan, and others are contained in small amounts. have. It is made by dissolving and removing components other than cellulose from wood by chemical treatment, leaving only cellulose.

To make pulp, first crush wood (this is called chip), and steam it in an aqueous solution of calcium hydrogen sulfite at 130 ~ 160℃ for about 8 hours to remove lignin, pentosan, and other things. And it goes through a process such as bleaching again. The pulp produced in this way is called sulfite pulp. In addition to this, there are methods such as the caustic soda method and the sodium sulfate method. The pulp produced by the sodium sulfate method is called craft pulp, and it is used as wrapping paper (kraft paper) because of its high quality. In addition, there are cases where the above-mentioned chemical treatment was not performed and the chief was only crushed with water. This is called crushed wood pulp, and it contains lignin and other components, so it is cheap, but it is easily discolored and used as newsprint.

The three main components of wood are cellulose, hemicellulose, and lignin. Subcomponents of wood include resins, essential oils, extracts such as tannins, and minerals (10% level).

Lignin is a high-molecular amorphous substance, and has a characteristic that it is difficult to hydrolyze by acid. In fact, it is known that 20-25% of hardwoods and 27-30% of softwoods exist. It is easy to think of lignin as the cement that supports the skeleton of cellulose.

In order to use it as an important organic resource material, it is a component that must be removed in particular to use wood for pulp. When pulp is made, waste liquid from which lignin is melted is produced, and this waste liquid can be used for chemical production and energy conversion such as concentrated fuel.

Cellulose is the main component of pulp. The higher the cellulose content, the better the pulp. Cellulose is a hydrocarbon compound composed of hexoses.

In order to extract cellulose from wood, the OH group of carbon 5 of glucose must attack carbon 1 (aldehyde group). The two most important results of this cyclization reaction are the formation of a new asymmetric carbon and the formation of a pair of diastereomers, i.e., monosaccharides that differ only in the arrangement at carbon 1 are called anomers. do. Pure glucose exists in two crystalline forms. (α-D-glucose, β-D-glucose) In the anomers of D-glucose, there are more β anomers than α anomers because β anomers are more stable.

Hemicellulose is a generic term for polysaccharides that are easily hydrolyzed by acid and extracted. Like cellulose, it has polysaccharides but other characteristics, and is a material that constitutes wood cell membranes. It is not extracted in cold water, but is easily extracted by alkali and hot water.

In the case of conifers, galactoglucomannan and arabino-4-O-methylglucuronoxylan are distributed the most, and in the case of hardwoods, O-acetyl-4-O-methylglucuronoxylan is the most distributed.

The process of removing lignin and other substances while leaving the maximum amount of cellulose constituting the pulp among the main components of this wood is called the pulping process. This pulping process can be divided into chemical pulping and mechanical pulping.

<The order of making pulp>

Debarking, chipping, screening, and pulping (chemical and mechanical) are the steps to make the pulp. The pulp made in this way is mostly used as a raw material for making paper, but it is made into tissues and other hygiene products.

Debarking

Debarking - The operation of removing the bark attached to the log. The outer bark contains quite a lot of negative factors in the process of processing the wood that goes into the paper. Because it is exposed to the outside, it contains a large amount of foreign substances and causes machine failure, and since the content of cellulose required for paper is small, it is peeled off without needing to be thrown away.

Chipping of wood

- Except for groundwoodmechanical pulp, processes using peeled logs require small chips. In the future, it is necessary to treat the wood with chemicals or pressure, and the machine used at that time is called a refiner. In the refiner mechanical pulping process, raw wood cannot enter the disc refiner, so it must be mechanically pulped into chips. Ultimately, it can be said that the purpose of this process is to make the wood into small chips so that the chemicals and vapors can penetrate it rapidly and uniformly into the wood.

Screening

The size of the chip is generally made with a fiber length of 15 to 25 mm and a thickness of 4 mm, but materials (fines) larger or smaller than this size are produced during the process. It is better to remove the fine powder because it causes an increase in the chemical solution and is not conducive to the process. In addition, if the size is too large, the penetration of the chemical is not easy, so a chip larger than the desired size is filtered. The distance process is called screening, and screening is simply sieving through a dense mesh. Screening varies depending on the size of the net, and in most processes, multiple screenings are performed to avoid wasting wood as much as possible.

Screens play a very important role in the production of mechanical pulp. For example, it is a unit process for removing shives (fine fiber fragments), classifying fibers, removing heavy foreign substances, and refining rejects. In conclusion, the removal of shives is the main objective of this screening process.

pulping

Pulping refers to reducing the molecular weight while cleaving the aryl ether structure.

Mechanical Pulping

Mechanical pulping refers to a process in which physical temperature or force is applied to remove lignin among the pulping methods. It consumes a lot of energy because it involves the process of breaking the wood and applying strong pressure, and instead has a high yield. Although high-yield, high-quality cellulose is not obtained. In modern times, it is attempted to increase the quality and yield by mixing it with a chemical pulping method.

In addition, mechanical pulping differs from chemical pulping in that the size distribution of lignin is wide, abundant, and stiff.

Since the indestructible fiber pieces are stiff, for proper paper strength, the mechanical pulp must contain a large amount of high-quality fibers with high bonding strength. Therefore, mechanical pulp is used together with chemical pulp, and compared to mechanical pulp, the strength of paper can be further improved by adding a flexible chemical pulp. If only mechanical pulp is used, high-quality paper cannot be obtained because it contains a large amount of lignin.

The types of mechanical pulping are as follows.

Ground Wood Mechanical Pulp (GW)

It is a mechanical pulping method that uses whole wood without making chips. Because stone is used to treat wood, it is called crushed wood pulping. It is used at a temperature of 70-75°C, and the yield is quite high, about 98.5%, but the content of lignin is very large. Therefore, ground wood pulp is mainly mixed with newsprint, low-grade magazines, toilet paper, and wallpaper. Because it is effective in increasing the opacity and thickness of paper, the content of short fibers and microfibers is high, and the durability is low. In addition, it is easily yellowed by air or light and has high ink hygroscopicity.

It is used not only for pure crushed wood pulping, but also by pre-treatment with pressure and heat.

Groundwood Mechanical Pulp (SGW): The process of processing wood using stones.

-Pressure Milling Machine Pulp (PGW): After applying a pressure of 2.5 bar, it enters the milling machine after pretreatment by washing with water below 100℃. The yield is 98.5%.

-Third Wood Machine Pulp (TGW:): After heating with water and steam at about 80°C, it enters the milling machine. The yield is 98.5%.

Stones are used to treat wood, and the point where it protrudes is called a protrusion. As the wood is continuously treated, the projections become dull, so a sharpening process is required.

refiner pulp

The refining process, which is fiberized by a refiner, is the most important core part of the refiner ground wood pulp process. It means that the chip is physically processed as it passes through the narrow gap of the refiner. It can be said that the process of crushing the chips by shear force by sending the chips together with water to the center of two rotating disks installed in parallel. A typical rotational speed of the disc refiner is 1500 to 1800 rpm.

In the actual process, it is often used in multiple stages connected in series, and the concentration of the first stage is 18 to 20% and the concentration of the second stage is operated at 20% or more. The primary refining makes the chip into short fibers, and the secondary refining increases the bonding strength between fibers by fibrillating the short fibers. The yield is about 97.5%.

Pressure refiner pulp (PRMP: Pressure Refiner Mechanical Pulp) that is pre-processed by applying pressure once before the refiner process.

Other thermal and chemical mechanical pulps

A simple mechanical pulp gives a lot of physical force during grinding, so that the fibers become short and microfibers occur a lot, the strength is lowered, and the lignin is not easily eluted. Therefore, heat or chemicals are pre-treated, and the abbreviation changes depending on the presence or absence of pre-treatment.

Thermomechanical Pulp (TMP)

It is a pulp produced by pre-treating chips at a high temperature and refining under pressure.

By applying heat, the lignin is softened to facilitate dissolution. Refiner is a pulp manufactured by refining under atmospheric pressure without pretreatment, whereas thermomechanical pulp is a pulp with superior strength characteristics and better fiber preservation compared to refiner mechanical pulp because a pretreatment process is added using high-temperature steam before refining. can

Chemical Mechanical Pulp (CMP: Chemimechanical Pulp) Pulp that is pre-treated with chemicals and then grinded

Chemical thermomechanical pulp (CTMP: Chemi-thermo-mechanical Pulp): It is a pulp that is milled after pre-treatment with chemicals and high-temperature steam.

chemical pulping

Chemical pulping refers to a process of cooking after adding a chemical that helps the dissolution of lignin among the pulping methods. In other words, it is to remove lignin at a certain time and temperature by adding chemicals. It is carried out under a certain pressure to achieve the desired temperature, and the chemical is recovered after cooking. Compared to mechanical pulping, it consumes relatively low energy and has a low yield. However, a low yield is not a negative sign. Although the yield is low, it is a more efficient pulping method than mechanical pulping because the proportion of pure cellulose is large.

In chemical pulping, lignin becomes water-soluble and eluted by the action of chemicals (hydrosulfide ion, bisulfite ion, hydroxide ion). There is fight pulping.

kraft pulping

It refers to chemical pulp obtained by cooking with a mixture of sodium hydroxide (NaOH) and sodium sulfide (Na2S). Because the chemical solution is alkaline, it is sometimes classified as alkaline pulp along with soda pulp.

Lignin swollen in wood is chemically decomposed by OH- and SH- and eluted as phenolate or carboxylate ion.

Kraft pulping is the most efficient and currently the most used. However, not only lignin is eluted purely. As carbohydrate decomposition occurs, carbohydrates are also eluted. Carbohydrates (hemicellulose and some cellulose) are also chemically decomposed, and consequently, lignin 80%, hemicellulose 50%, and cellulose 10% are eluted during kraft pulping.

Condensation reaction may occur during pulping, but SH- can reduce the condensation reaction by protecting the reactive group (hydroxyl group of benzyl alcohol). The condensation reaction is the condensation of decomposed lignin in the liver or between insoluble lignin and cellulosic carbohydrates. When this condensation reaction occurs, it becomes more difficult to remove the lignin from the wood.

During kraft pulping, lignin occurs by lignin softening.

Hydrogen bonds are formed in lignin. As this lignin swells, the softening temperature is determined by the softening temperature and the elastic modulus is determined by hydrogen bonding.

During the pulping process, the hydrogen bond between the molecular chains of lignin was replaced by the bond between lignin and water, so the softening temperature and elastic modulus were lowered.

In other words, the softening temperature and elastic modulus lowered by sulfonation is a phenomenon that occurs when a sulphonate group, which cannot form a bond between molecular chains, substitutes an ether group and a hydroxyl group.

Lignin elution is largely divided into three steps.

Initial stage: Extraction of components including carbohydrates and lignin. (The loss of carbohydrates is greater than the dissolution of lignin.)

Intermediate stage: 20% carbohydrate and lignin are eluted, with lignin optionally eluted up to almost 90%.

Residual stage: Although the remaining lignin tries to elute as much as possible, more carbohydrates are lost in this process.

Therefore, it is important to perform pulping for an appropriate time and temperature by properly utilizing the loss rate of lignin and carbohydrate loss.

Soda pulping

The method using only caustic soda (NaOH, sodium hydroxide) is called the soda pulping method.

Hardwoods are mainly used, and the cooking liquor is used by mixing caustic soda (NaOH, 25-27%/caustic soda) sodium carbonate (Na2CO3, 2-4%) in a ratio of 4:1. It proceeds at a temperature between 140 and 170 °C. Cook for 2 to 6 hours. The yield is 40-55%. If the temperature is higher than 180 degrees Celsius, carbonization of carbohydrates occurs, so it should not be higher than 180 degrees Celsius. When caustic soda is added for cooking, swelling, peeling, stopping, and chain cleavage occur, resulting in dissolution of lignin.

sulfite pulping

Sulfite pulping: It is pulping that cooks using sulphurousacid (H2SO3). The bisulphiteions are involved in delignification (pH 1-2).

It is also pulping using organic solvents (anthraquinone, ethanol, methanol, and peraceticacid).

bleaching

Bleaching is a process of eluting residual ginseng by decomposing it through cleavage of carbon and carbon, quinonation and cleavage of the benzene ring. In the case of lignin, it turns yellow when exposed to UV light or over time, so bleaching is essential to control the brightness of paper.

Factors affecting bleaching include the pressure of the bleaching tank, the direction of pulp movement (up-flow, down-flow or upflow-downflow), the pulp concentration, the size of the reaction tank, and the residence time.

Claims (6)

In the manufacturing method of antibacterial base paper for fruit bag using illite,
The base paper for fruit bags is mixed with Illite extract water to the pulp for manufacturing paper,
The pulp is subjected to mechanical pulping of wood at a pressure of 2.5 bar at a temperature of 80 to 100 ° C.
The pulping uses a pulp prepared by using kraft pulping or soda pulping, which elutes the lignin component of wood with hydroxide ions in water-soluble,
When mixing Illite extract water with the pulp prepared as described above, 1 to 10 parts by weight of Illite leachate immersed for 24 to 72 hours after mixing 5 to 30 parts by weight of 0.01 to 500 μm size illite powder with 100 parts by weight of water Method for producing base paper for antibacterial fruit bag using Illite, characterized in that it is mixed with 100 parts by weight of pulp stock solution
delete delete delete In the manufacturing method of the antibacterial fruit bag,
The antibacterial fruit bag uses an antibacterial base paper for fruit bags using Illite, and the base paper for fruit bags mixes Illite extract with pulp for producing paper,
The pulp is subjected to mechanical pulping of wood at a pressure of 2.5 bar at a temperature of 80 to 100 ° C.
The pulping uses a pulp prepared by using kraft pulping or soda pulping, which elutes the lignin component of wood with hydroxide ions in water-soluble,
When mixing Illite extract water with the pulp prepared as described above, 1 to 10 parts by weight of Illite leachate immersed for 24 to 72 hours after mixing 5 to 30 parts by weight of 0.01 to 500 μm size illite powder with 100 parts by weight of water Manufactures an antibacterial base paper for fruit bags mixed with 100 parts by weight of the pulp stock solution,
When a coating layer is formed by coating one side of the base paper for antibacterial fruit bags with a coating material, 100 parts by weight of the base paper for antibacterial fruit bags contains 0.00001 to 0.01 parts by weight of a coating material comprising one of paraffin wax, paraffin wax emulsion, fat and oil, and oil and fat emulsion. Method for manufacturing an antibacterial fruit bag, characterized in that it is coated


















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