KR20010106752A - Film having antibacterial agent and deodorizer - Google Patents

Abstract

The present invention relates to a food packaging film provided with an antibacterial and deodorant function by including an antibacterial agent and a deodorant.

Antimicrobial deodorant film according to the present invention is processed by mixing the inorganic antimicrobial agent and deodorant function of ganban stone fine powder into a polyolefin resin such as polyvinyl chloride and forming into a film, while having excellent antibacterial effect, fish odor or kimchi It not only removes the captan odor, but also maintains the freshness of the food by far infrared rays emitted from the elvan, and maintains transparency, adhesiveness, and physical properties, which are inherent to the conventional food packaging film.

Description

Film containing antibacterial and deodorant {Film having antibacterial agent and deodorizer}

The present invention relates to a food packaging film comprising an antibacterial agent and a deodorant. More specifically, the present invention relates to an antimicrobial agent in a conventional food packaging film made of polyolefin resin such as polyethylene (PE) or polyvinyl chloride (PVC) (commonly distributed under the trade name 'wrap'). In addition, by mixing and processing the fine powder of ganban stone with excellent deodorizing function and forming into a film, it has excellent antibacterial effect and removes fishy smell, kimchi smell and rotten odor of egg, and maintains freshness of food by far infrared rays emitted from gannetite. It relates to an antibacterial deodorant film.

Recently, as consumers 'interest in hygiene has increased due to the improvement of consumers' living standards, some antimicrobial films using inorganic antibacterial agents have been developed, but they cannot remove the smell of fishy fishy or kimchi. There is a growing interest in antimicrobial deodorant films.

Currently, food packaging films are widely used in general households, restaurants, and various retail packaging for fruits, vegetables, growth, processed foods, etc., but their usage is diversified. It has only the freshness holding function by the permeation | transmission blocking effect of this.

Currently, antimicrobial agents applied to polyolefin-based films such as polyvinyl chloride are inorganic antimicrobial agents manufactured artificially by chemically reacting silver, zinc, copper, etc. with processed zeolites.

In general, deodorant has been widely used as a material that can be easily encountered around our lives for a long time.

Japanese Patent No. 92-298513 and Japanese Patent No. 90-217064 describe general deodorant compositions using green tea extracts and polyols, and Japanese Patent No. 90-297239 describes deodorants and disinfectants including limonene and benzalkonium chloride. It was described. However, when the film is thin and transparent like a film and requires a certain strength, the tensile strength and the elongation rate decrease according to the addition of the deodorant, and the opacity of the film occurs, which makes it difficult to apply the film.

In addition, until now, there is no film for food packaging provided with antibacterial and deodorizing functions at the same time.

Therefore, the present inventors have repeatedly studied a film that can remove an unpleasant odor while having an excellent antimicrobial effect, and thus developed an antimicrobial deodorant film including an antimicrobial agent and a deodorant and a method of manufacturing the same.

An object of the present invention is to provide an antibacterial deodorant film comprising an antibacterial agent and a deodorant.

Another object of the present invention to provide an antimicrobial deodorant film comprising an inorganic antibacterial agent and ganbanite fine powder deodorant.

The film comprising the antimicrobial agent and the deodorant according to the present invention is a film obtained by mixing 0.01 to 2% by weight of an inorganic antibacterial agent and 0.001 to 1% by weight of a deodorant in a masterbatch comprising a polyolefin resin such as polyvinyl chloride, a plasticizer and an additive. It is made by molding.

Plasticizers and additives included in the masterbatch may be selected from the group consisting of DOA (Dioctyl Adipate; Dioctyl Adipate), soybean oil, heat stabilizer, antifog and mixtures of two or more thereof.

The inorganic antimicrobial agent is a fine powder having a particle size of 0.1 to 2 μm.

The inorganic antimicrobial agent is prepared by combining an antimicrobial metal ion selected from the group consisting of silver, zinc, copper and a mixture of two or more thereof with a zeolite inorganic carrier.

The deodorant is a finely divided elvan rock having a particle size of 0.1 to 4 μm.

The inorganic antibacterial agent and the deodorant are mixed in the form of a compound or a master powder in a master batch.

The master powder is used comprising 20 to 50% by weight of polyvinyl chloride, 20 to 50% by weight of soybean oil, 1 to 10% by weight of antibacterial agent and 1 to 10% by weight of deodorant.

Hereinafter, the present invention will be described in detail with reference to specific examples.

The film containing the deodorant according to the present invention is mixed with 0.01 to 2% by weight of the inorganic antibacterial agent and 0.001 to 1% by weight of the deodorant in the masterbatch for the production of the film of the polyolefin resin used in the production of the film that can be used for food packaging, etc. It is made by molding into a film.

In the above, polyolefin-based resin is a generic term for a resin that is high molecular weight by polymerization of a monomer having a double bond in the monomer molecule used for preparing the resin. Representative examples of the polyolefin-based resins include polyethylene, polypropylene, polystyrene, polyvinyl chloride, ethylene-propylene copolymers, and the like, which are listed only by way of example, there are a plurality of resins and copolymerization of two or more monomers. The copolymers may have various composition ratios and structural diversity depending on the intended physical properties. Examples of the monomer having a double bond include ethylene monomer used for producing polyethylene, propylene monomer used for producing polypropylene, styrene monomer used for producing polystyrene, vinyl chloride used for producing polyvinyl chloride, and the like. These can be collectively referred to as vinyl monomers.

Examples of the plasticizer and additive included in the polyolefin resin and constituting the masterbatch include plasticizers such as DOA and DOP (Dioctyl Phthalate), and other additives such as soybean oil, heat stabilizer, and antifogging agent.

The additive may be used for the purpose of low temperature flexibility, molecular weight control, and the like, and may be added or subtracted according to the physical properties of the resin. Soybean oil is used as a lubricant and facilitates molding into a film. As the heat stabilizer, bisorganic tin stabilizers such as di-n-octyl tin bis (isooctylthioglycolic acid ester) are used, and serve to prevent decomposition by heat. They are also widely used because they exhibit no toxicity or low toxicity. The antifogging agent serves to maintain the transparency of the packaging film by preventing the formation of water droplets on the surface of the film (commonly referred to as 'fogging'). What includes the plasticizer and the additive in the polyvinyl resin is generally referred to as a "master batch", and is a composition for forming into a film or the like.

In the present invention, it is characterized in that the masterbatch is mixed with 0.01 to 2% by weight of inorganic antibacterial agent and 0.001 to 1% by weight of deodorant to form a film.

In general, the inorganic antimicrobial agent is a form in which antimicrobial metal ions are bonded to an inorganic carrier, and ion exchangeable ions partially or completely to antimicrobial ions in a bioceramic zeolite (SiO ₂ , Al ₂ O ₃ , NaO) inorganic carrier. As the antimicrobial ions, silver, zinc, copper, mercury, tin and the like are used alone or in combination, and the inorganic antimicrobial agent used in the present invention is silver, zinc, copper and two or more of which are antimicrobial metal ions in the zeolite inorganic carrier. It is prepared by combining antibacterial metal ions selected from the group consisting of mixtures.

In the case of using the inorganic antimicrobial agent used in the present invention at less than 1x10 ^-1 % by weight of polyvinyl chloride, there may be a problem that the target antimicrobial effect cannot be obtained, and when used at 2% by weight or more, transparency and There may be a problem that the physical properties are lowered, the product value of the film is lowered.

In general, as a deodorant exclusively extracts derived from ethanol, green tea, bamboo, etc. are used as a deodorant, or a compound such as dichlorobenzene, chlorine compound, benzalconium chloride, etc., is mostly used as a deodorant for a refrigerator or kitchen detergent. to be.

The ganbanite fine powder deodorant used in the present invention not only removes the fishy or kimchi mercaptan odor, but also serves to maintain the freshness of the food by far infrared rays emitted from ganbanite.

In the case of using the elvan fine powder deodorant used in the present invention at 1x10 ^-3 wt% or less compared to polyvinyl chloride, there may be a problem in that the target deodorizing effect cannot be obtained, and when used at 2 wt% or more, transparency There may be a problem that the physical properties of the film is lowered and the physical properties are lowered.

In addition, in order to minimize the amount of incorporation by increasing the activity of the deodorant without affecting the transparency and physical properties due to the incorporation of the deodorant, in the present invention, the particle size of the fine granules of the ganguerite powder is used in the range of 0.1 to 4 μm.

In addition, since the food packaging film is in direct or indirect contact with the human body, hygiene stability is important above all. Therefore, the oral toxicity evaluation (LD ₅₀ ), skin irritation evaluation (Skin Path Test), return mutation evaluation (AMES Test) by performing an evaluation on the hygiene stability in the national certified institution for the antibacterial and deodorant raw materials used in the present invention The harmlessness of the human body was confirmed (see Experimental Example).

In addition, since the inorganic antimicrobial agent and the deodorant used in the present invention have a very small amount of input, in case of incorporating a deodorant alone during film production by a T-die extruder or inflation, a measurement error and dispersion In order to impair the uniformity of quality due to the nonuniformity of, in the present invention, a master powder or compound composed of polyvinyl chloride, an inorganic antimicrobial agent, and a ganban fine powder deodorant was prepared in advance and incorporated. At this time, the master powder can be produced in a composition ratio of 20 to 50% by weight of polyvinyl chloride, 20 to 50% by weight of soybean oil, 1 to 10% by weight of antimicrobial agent, and 1 to 10% by weight of fine powder deodorant. However, when the antimicrobial agent and the deodorant content of the master powder is less than 1% by weight, the uniformity of quality may be excellent, but there may be a problem of an increase in manufacturing cost, and when the weight is more than 40% by weight, there may be a problem of poor quality uniformity.

Hereinafter, preferred embodiments and comparative examples of the present invention will be described.

The following examples are intended to illustrate the invention and should not be understood as limiting the scope of the invention.

Example 1

First, a master powder was prepared by mixing 65% by weight of polyvinyl chloride, 20% by weight of epoxidized soybean oil, 5% by weight of antibacterial agent, and 10% by weight of deodorant.

Separately 72% by weight of polyvinyl chloride, 15% by weight of DOA, 10% by weight of epoxidized soybean oil, 1% by weight of heat stabilizer and 2% by weight of antifog to prepare a masterbatch, 0.1% by weight of the master powder The mixture was further mixed in an amount of to prepare a 12 μm thick film using a T-die extruder.

Example 2

The master powder of Example 1 was further mixed with the master powder in an amount of 1% by weight to prepare a 12 μm thick film using a T-die extruder.

Example 3

The master powder of Example 1 was further mixed with the master powder in an amount of 2% by weight to prepare a 12 μm thick film using a T-die extruder.

Example 4

The master powder of Example 1 was further mixed with the master powder in an amount of 5% by weight to prepare a 12 μm thick film using a T-die extruder.

Example 5

The master powder of Example 1 was further mixed with the master powder in an amount of 10% by weight to prepare a 12 μm thick film using a T-die extruder.

Comparative Example 1

A 12 μm thick film was prepared using a T-die extruder in the masterbatch of Example 1.

Experimental Example 1: Sanitary Stability Test

Test methods and standards for the presence of harmful substances and hygienic stability of inorganic antimicrobial agent and ganban stone fine powder deodorant are based on the hazardous substance-containing fiber products, quality inspection criteria and methods (Industrial Advancement Notice No. 1992-24, '92 .2.14). Evaluation was performed and the results are shown in Table 1.

Inspection items standard Evaluation Acute Oral Toxicity Assessment (LD ₅₀ ) 600 mg / kg or more 2500 mg / kg or more Return Mutation Assessment (AMES Test) voice voice Skin irritation evaluation Sub-negative voice

From the results of Table 1, it was found that the inorganic antimicrobial agent and the elvan fine powder deodorant used in the present invention are harmless to the human body.

Experimental Example 2: Deodorant Effect Test

Put deodorant in a sealed container and put the same amount of odor source (3 kinds), and after a certain time, the residual amount of odor that has not been deodorized is sucked into the detector tube and the residual gas concentration is measured (using a gas detector). The results are shown in Table 2.

1) Ammonia: 0.4 ml of 0.03% aqueous ammonia was aspirated into the detection tube.

2) Amine: measured by inhaling 0.4 ml of amine 0.3% aqueous solution in the detection tube

3) mercaptan: measured by aspirating 0.5 ml of a mercaptan 0.1% aqueous solution into the detection tube

Deodorant Deodorant Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Example 5 ammonia 97 82 62 50 25 19 Trimethylamine 95 80 51 45 20 15 Methylmercaptan 80 77 70 65 49 45 More than 80 ppm: No deodorant 50 to 80 ppm: Minor deodorant 20 to 50 ppm: Deodorant Less than 20 ppm: Excellent deodorant

As can be seen from the results of Table 2, in Examples 3, 4 and 5 according to the present invention it was shown that the deodorizing effect is superior to Comparative Example 1 without addition of the deodorant used in the present invention, while the master powder 0.1 When used below the weight% (Example 1), only the comparatively low deodorant effect was obtained.

Experimental Example 3: Lead retention effect test

After packing the lettuce with a film for food packaging, the wilting phenomenon of the lettuce as a quality index factor while storing in the refrigerator refrigerator compartment, the results are shown in Table 3 storage period (days).

Keep fresh tooth fresh division Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Example 5 Storage period (days) 3 4 5 7 8 8 The longer storage period, the better the leading effect

As can be seen from the results of Table 3, the freshness retention period of the lettuce was increased according to the addition of the antimicrobial agent and the deodorant, and the effect was excellent from Example 3.

Experimental Example 4: Evaluation of Antimicrobial Activity

The test and control surface areas of the film are cut to 60 cm 3 and inoculated with 100 μl of a suspension of precultured Escherichia coli ATCC 10536, Staphylococcus aureus ATCC 6538 (104 CFU / mL). Then, each sample piece is folded in half, pressurized and incubated in a 37 ° C. incubator for 24 hours. After 24 hours, dilute with 4 ml of phosphate buffer and stir well for 1 minute. Dilute in 0.85% aqueous sodium chloride solution and smear on bacterial enrichment medium to count viable counts of test bacteria. The bacterial growth medium is incubated for 48 hours in a 37 ° C incubator, and the number of viable cells is counted. In the test described above, the number of three bacteria was averaged, and the reduction rate was calculated. The results are shown in Table 4.

% Growth rate Test strain Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Example 5 ^* Escherichia coli -10 56 81 90 99 99 ^* Staphylococcus aureus -5 72 80 88 99 99 Escherichia coli: Staphylococcus aureus: Staphylococcus aureus

From the results of Table 4, inoculation bacteria were slightly increased in Comparative Example 1 without the antimicrobial agent, but inoculation bacteria were reduced when the antimicrobial agent was added, and inoculation bacteria were decreased in Example 1 in which 0.1 wt% of the master powder was added. The effect was relatively low, and when injecting more than 5% by weight of the master powder as in Example 4, both inoculation bacteria can be seen to be killed or reduced by more than 90% by weight.

Experimental Example 5: Transparency Test

According to ASTM 1003-01, the transparency (HAZE,%) for each material was measured by using a brand name HAZEMETER manufactured by TOYOSEIKI, Japan, and the results are shown in Table 5.

Transparency (HAZE,%) division Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Example 5 Transparency (HAZE,%) 0.62 0.64 0.72 0.80 0.91 1.2

As can be seen from the results of Table 5, the transparency was slightly decreased depending on the addition of the antimicrobial agent and the deodorant, but the difference was small. On the other hand, in the case of Example 5, that is, when using the master powder in more than 10% by weight did not exhibit the level of transparency required by the inventors.

As a result of the synthesis of the above embodiments, according to the present invention, while maintaining the transparency and physical properties, which are inherent characteristics of the conventional food packaging film, excellent in stability to the human body and the antibacterial effect to remove various bacteria and deodorizing effect to remove the unpleasant odor It can be seen that it can be obtained at the same time and to obtain an antibacterial deodorizing film to maintain the freshness of the food.

Therefore, according to the present invention, the antimicrobial deodorant film having both an excellent antimicrobial effect and a deodorizing effect can be obtained by including an inorganic antimicrobial agent and a deodorant of the finely divided fine powder in a masterbatch composed of a polyolefin resin.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

Claims (7)

Antimicrobial agent and deodorant, characterized in that formed by forming a film by mixing 0.01 to 2% by weight of inorganic antibacterial agent and 0.001 to 1% by weight of deodorant in a master batch comprising a polyolefin resin such as polyvinyl chloride, a plasticizer and an additive Antibacterial deodorant film. The method of claim 1, Plasticizers and additives included in the masterbatch is an antimicrobial deodorant film comprising the antimicrobial agent and deodorant, characterized in that selected from the group consisting of DOA, soybean oil, heat stabilizer, antifog and mixtures of two or more thereof. The method of claim 1, The antimicrobial deodorant film comprising the antimicrobial agent and deodorant, characterized in that the inorganic antimicrobial agent is a fine powder having a particle size of 0.1 to 2 ㎛. The method according to claim 1 or 3, The antimicrobial deodorant film comprising the antimicrobial agent and the deodorant, characterized in that the inorganic antimicrobial agent is prepared by combining an antimicrobial metal ion selected from the group consisting of silver, zinc, copper and a mixture of two or more thereof to a zeolite inorganic carrier. The method of claim 1, The antimicrobial deodorant film comprising the antimicrobial agent and deodorant, characterized in that the deodorant is finely divided elvan rock with a particle size of 0.1 to 4 ㎛. The method of claim 1, The antimicrobial deodorant film comprising the antimicrobial agent and the deodorant, characterized in that the inorganic antibacterial agent and deodorant are mixed in the form of a compound or a master powder in a masterbatch. The antimicrobial agent and the deodorant according to claim 6, wherein the master powder contains 20 to 50% by weight of polyvinyl chloride, 20 to 50% by weight of soybean oil, 1 to 10% by weight of antibacterial agent, and 1 to 10% by weight of deodorant. Antibacterial deodorant film comprising a.