KR102301561B1 - Food pad - Google Patents

Abstract

The present invention relates to a food pad, and more particularly, to a food pad capable of absorbing droplets generated by exudation from food, for example, blood of meat.

Description

food pad {Food pad}

The present invention relates to a food pad, and more particularly, to a food pad capable of absorbing droplets generated by exudation from food, for example, blood of meat.

In general, food packaging containers are packed with various fruits or vegetables and meat, and then closed and sealed.

However, as described above, after packaging fruits or vegetables in a food packaging container, E. coli and mold have already penetrated the inside of the sealed container in the cultivation process, packaging process, and many other conditions, thus speeding up the decay process. There was a problem that reduced the value of the product.

In addition, since a large amount of moisture is always stagnant at the bottom of the container, there is a problem that the product is spoiled even by the moisture.

In order to solve the above problems, conventionally, a method for absorbing blood or water from food by forming pores on a film surface or a container for food packaging has been proposed.

However, in order to make small holes on the film surface or container for food packaging, there is a problem of complexity in the manufacturing process, and the nonwoven fabric does not absorb the droplets generated by exudation from the food because the nonwoven fabric does not obtain the desired level of absorption capacity. The problem of food spoiling easily occurred frequently.

Therefore, there is an urgent need to research and develop a pad having a high-performance absorption ability even with a simple process so that food can be stored for a long period of time.

Japanese Patent Laid-Open No. Hei 02-251444

The inventors of the present invention continued research on a pad having a high absorption capacity capable of absorbing droplets generated by exudation from food. As a result, it was found that the absorption capacity of droplets generated by exudation from food can be remarkably improved by mixing the oxygen generator and the desiccant in an appropriate ratio, and thus the present invention has been completed.

Hereinafter, the present invention will be described in detail.

The terms used in the present specification have been selected as widely used general terms as possible while considering the functions in the present invention, but these may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Numerical ranges are inclusive of the values defined in that range. Every maximum numerical limitation given throughout this specification includes all lower numerical limitations as if the lower numerical limitation were expressly written. Every minimum numerical limitation given throughout this specification includes all higher numerical limitations as if the higher numerical limitation were expressly written. Any numerical limitation given herein shall include all further numerical ranges within the broader numerical range, as if the narrower numerical limitation were expressly written.

food pad

The present invention provides an absorption layer formed by mixing an oxygen generator and a moisture absorbent; and a cover layer on which the absorbent layer is attached.

In the present invention, the term "food pad" includes an absorbent layer formed by mixing an oxygen generator and a moisture absorbent, and a cover layer on which the absorbent layer is attached. It means a pad with high absorption capacity.

In the present invention, the term "Oxygen Generating Neutralizer ('OGN')" refers to a sterilization action by generating oxygen radicals by reacting with moisture generated in food, and then oxygen is produced due to the decomposition of oxygen radicals. It means a material that can prevent food spoilage by being generated, and specifically, the oxygen generating agent is a material having an antibacterial effect because it can reduce the amount of strain through the mechanism of action.

In the present invention, the term "oxygen radical" is applied to various fields such as sterilization, disinfection action, surface activation action, oxidative decomposition of non-degradable organic materials, decolorization, deodorization, deodorization action, suppression of the production of carcinogenic substances (YHM), etc. Because of the even sterilization effect regardless of the strain, the ultrapure water sterilization treatment not only sterilizes water quality, but also increases the freshness of the water by 6 times, so it can prevent scale inside the water tank and pipe, and it can be used for indoor air purification It can also sterilize, deodorize, desulfurize, and denitrify, so it has excellent effects in indoor air sterilization, deodorization, underground purification, high-purity sterilization water purification, food sterilization treatment, agricultural product sterilization treatment, and aquatic product sterilization treatment.

In one embodiment of the present invention, the oxygen generating agent may be any one of calcium peroxide, magnesium peroxide, sodium percarbonate or sodium perborate, more specifically may be calcium peroxide.

In the present invention, the term "hygroscopic agent" means a material having a property of absorbing or adsorbing moisture generated in food, and specifically, in one embodiment of the present invention, the absorbent is a super absorbent polymer (Super Absorbent Polymer; SAP). Specifically, the superabsorbent polymer may be any one of starch-based, cellulose-based, or acrylic superabsorbent polymer, but is not limited thereto, but may preferably be an acrylic superabsorbent polymer.

In the present invention, the term "super absorbent resin" is a synthetic resin in the form of a white powder made by graft hybridization polymerization of acrylonitrile to starch (potato starch) or cellulose, or by mixing acrylic acid and sodium hydroxide (caustic soda). It means a material that can absorb a large amount of water without being soluble in water as a polymer having a large amount of hydrophilic groups while having a three-dimensional network structure. High hygroscopic resin is a resin that absorbs water tens to hundreds of times its own weight. Since the material itself absorbs water, it absorbs more than cotton or cotton cloth, and does not release water under moderate pressure, so it is suitable for children, adults, and animals. Most commonly used for diapers. That is, the conventional superabsorbent polymer was used as a defecation pad, but there were no examples of it being used as a food pad.

In the present invention, the term "absorbent layer" means that an oxygen generating agent and a moisture absorbent are mixed to absorb the droplets generated by exudation from the food to prevent spoilage of the food.

In one embodiment of the present invention, the absorbent layer may be formed by mixing an oxygen generator and a desiccant in a weight ratio of 1:1.5-5, and the absorbent layer contains an oxygen generator and a moisture absorbent in a weight ratio of 1:1.5. When the absorbent layer is formed by mixing the oxygen generator and the desiccant in a weight ratio of 1:5, there is a problem in that the absorption capacity of the droplets generated by the exudation from the food decreases. There is a problem in that the role of the agent is reduced and the sterilization effect is insignificant, so it is preferable to include an oxygen generating agent and a desiccant within the above weight ratio range, and more specifically, the oxygen generator and the desiccant in a weight ratio of 1: 2 It may be formed by mixing. By including the oxygen generator and the hygroscopic agent in the above content range, the food pad of the present invention does not need to include an antibacterial material and a freshness maintaining material, etc. It has the advantage of absorbing moisture or blood to maintain the freshness of food for a long period of time. In addition, there is no need for a separate antibacterial and sterilization treatment, so there is an advantage that it can be manufactured in an economical way.

In one embodiment of the present invention, the absorption layer may further include activated carbon, but is not limited thereto. Specifically, when activated carbon is additionally included, the absorption layer may be formed by mixing an oxygen generator, a moisture absorbent, and activated carbon in a weight ratio of 1:1.5-5:0.5-1.5, but is not limited thereto.

In the present invention, the term "cover layer" means forming a cover of a food pad that may include an absorbent layer, and in one embodiment of the present invention, the cover layer may be pulp, but is not limited thereto. .

In the present invention, the term "pulp" means an aggregate of cellulose fibers obtained from wood or other fibrous plants by mechanical, chemical, or intermediate methods thereof.

In one embodiment of the present invention, the cover layer may further include a waterproof layer attached thereon, but is not limited thereto.

In the present invention, the term "waterproof cloth" refers to a material that is waterproof and has a strong resistance to moisture and chemicals.

In one embodiment of the present invention, the waterproof layer may be a polyethylene tarpaulin, but is not limited thereto.

In the present invention, the term "polyethylene tarpaulin" means a polyethylene (Polyethylene) fabric is waterproof.

In one embodiment of the present invention, the food pad may further include a breathable sheet at the top and bottom ends, specifically, the breathable sheet may be a polyolefin-based film, but is not limited thereto.

In one embodiment of the present invention, the polyolefin-based film may be a metallocene catalyst-based polyolefin film, a low-density polyethylene film, a linear low-density polyethylene film, a medium-density polyethylene film, and a high-density polyethylene film, and more preferably a low-density polyethylene film. may, but is not limited thereto.

In one embodiment of the present invention, the breathable sheet may include nano silver particles, but is not limited thereto.

In one embodiment of the present invention, the breathable film may contain 20 to 30% by weight of nano silver particles based on the total weight, and more preferably, further include 25% by weight of nano silver particles, By including the nano-silver particles within the above range, there is an advantage that an antibacterial function can be added.

In one embodiment of the present invention, the surface of the breathable sheet may include an uneven structure, but is not limited thereto. Specifically, there is an advantage in that it is possible to prevent moving parts when transporting food by including the uneven structure on the surface of the air-permeable sheet, and to prevent slipping in the container when applied to the food container.

In one embodiment of the present invention, the lower surface of the low-density polyethylene film positioned at the bottom may further include an adhesive layer and a release paper adhered to the lower surface of the adhesive layer, but is not limited thereto.

Specifically, when a food pad includes a release paper, the food pad can be uniformly fixed to the lower surface of the packaging container by removing the release paper and adhering it to the lower surface of the packaging container using an adhesive layer, so that the absorbent pad is moved to one side during the transportation process. There is an advantage in preventing the phenomenon of leaning.

In one embodiment of the present invention, the food pad may be used by being accommodated inside the packaging container, but is not limited thereto.

In one embodiment of the present invention, the food pad may have a perforated structure is excluded, but is not limited thereto.

Food pad manufacturing method

The present invention provides a method for manufacturing a food pad that is manufactured by laminating an absorbent layer on a cover layer and then compressing it,

The absorbent layer relates to a method for manufacturing a food pad, which is prepared by filling a mold with an absorbent layer material mixed with an oxygen generator and a moisture absorbent and applying pressure to prepare the absorbent layer pad.

In one embodiment of the present invention, the oxygen generator and the desiccant may be mixed in a weight ratio of 1: 1.5-5, and more specifically, the oxygen generator and the desiccant may be mixed in a weight ratio of 1: 2. .

Matters not mentioned in addition may refer to the matters described in the food pad, and the matters mentioned in the food pad and the manufacturing method of the food pad are the same as long as they do not contradict each other.

food container

The present invention is to provide a food container including the food pad.

Since the structure and components of the food container are known to those of ordinary skill in the art to which the present invention pertains, a detailed description thereof will be omitted below.

Contents known to those of ordinary skill in the art to which the present invention pertains with respect to the structure and components of the fire extinguishing system are incorporated into the content of the present invention.

Matters not mentioned in addition may refer to the matters described in the food pad, and the matters mentioned in the food pad and the food container are the same as long as they do not contradict each other.

The food pad according to the present invention has the effect of remarkably improving the absorption capacity of droplets generated by exudation from food by mixing the oxygen generator and the moisture absorbent in an appropriate ratio.

1 is a view schematically showing the structure of a food pad of the present invention.
2 is a view showing the sterilization effect of the food pad manufactured according to an embodiment of the present invention. (a: image before the start of the experiment, b: image after storage at room temperature for 5 days, c: image after storage at room temperature for 10 days)
3 is a view showing the sterilization effect of the food pad prepared according to Comparative Example 1 of the present invention (a: image before the start of the experiment, b: image after storage at room temperature for 5 days, c: image after storage at room temperature for 10 days).
4 is a view showing the sterilization effect of the food pad prepared according to Comparative Example 2 of the present invention (a: image before the start of the experiment, b: image after storage at room temperature for 5 days, c: image after storage at room temperature for 10 days).

Hereinafter, preferred examples are presented to help the understanding of the present invention. However, the following examples are only provided for easier understanding of the present invention, and the contents of the present invention are not limited by the examples.

Example

Pulp, calcium peroxide, acrylic superabsorbent polymer, and polyethylene tarpaulin were purchased from BASF Korea and the like.

An absorbent layer material was prepared by mixing 2 g and 4 g of calcium peroxide as an oxygen generator and acrylic superabsorbent resin, respectively (weight ratio = 1:2).

Thereafter, the absorbent layer material prepared above was filled in the inside of the mold (material: stainless steel), and a pressure of 2 atm was applied to prepare a rectangular absorber pad (width 4 mm, length 3 mm, and thickness 2 mm).

A breathable sheet was prepared by depositing 25 wt% of nano silver particles on the surface of the low-density polyethylene film based on the total weight of the low-density polyethylene film.

In this case, a commonly known method was used so that an uneven structure can be formed on the surface of the air permeable sheet.

After that, 25% by weight of nano silver particles are included, and a low-density polyethylene film having an uneven structure on the surface, a polyethylene tarpaulin (10 mm wide, 8 mm long and 2 mm thick), pulp (8 mm wide, 6 mm long and thickness 2 mm), an absorbent layer pad and a low-density polyethylene film were sequentially laminated, and then pressed using a roll applying heat (250 ℃) and pressure (2 atm). The pad was made.

Comparative Example 1: Preparation of a food pad

A food pad was prepared under the same conditions as in the above example, except that the absorbent layer material was prepared by mixing 2 g and 2 g of calcium peroxide as an oxygen generator and an acrylic superabsorbent resin, respectively (weight ratio = 1:1).

Comparative Example 2: Preparation of food pad

A food pad was prepared under the same conditions as in the above example, except that the absorbent layer material was prepared by mixing 2 g and 20 g of calcium peroxide as an oxygen generator and acrylic superabsorbent resin, respectively (weight ratio = 1:10).

Hereinafter, preferred experimental examples are presented to help the understanding of the present invention. However, the following experimental examples are provided for easier understanding of the present invention, and the contents of the present invention are not limited by the experimental examples.

In the present invention, the term "room temperature" means a range of 15 to 25 ℃.

Experimental example

Experimental Example 1: Performance evaluation of food pad

Whether the oranges are cut and placed on the food pad prepared in Examples and Comparative Examples 1 and 2, and left at room temperature for 5 and 10 days, whether the oranges are spoiled by drips caused by exudation from the oranges confirmed

Specifically, referring to FIG. 2 , in the case of the food pad manufactured according to the embodiment of the present invention, it was confirmed that the tangerine did not decay even if it was left at room temperature for 5 days, and the tangerine was easily removed even if it was left at room temperature for 10 days. It was confirmed that it was not corrupted.

Through the above results, calcium peroxide and acrylic superabsorbent polymer are mixed in a weight ratio of 1:2, so that the sterilization ability of calcium peroxide, an oxygen generating agent, and the moisture absorption ability of the acrylic superabsorbent polymer are synergistic, so that food is not easily spoiled. It was confirmed that the food pad of the present invention has excellent drip absorption and sterilization effect.

On the other hand, referring to FIG. 3 , in the case of the food pad prepared according to Comparative Example 1, when left at room temperature for 5 days, the tangerines began to partially decay, and when left for 10 days, 80% of the total area of tangerines It was confirmed that the abnormality was corrupted.

In addition, referring to FIG. 4 , in the case of the food pad prepared according to Comparative Example 2, when left at room temperature for 5 days, more than 60% of the total area of the tangerine began to decay, and when left for 10 days, identification was impossible. The entire area of the mandarin orange was rotten.

Through the above results, it was confirmed that calcium peroxide and acrylic superabsorbent polymer were mixed in a weight ratio of 1:1, so that there was a problem in that the absorption capacity of droplets generated by exudation was lowered (Comparative Example 1), and also calcium peroxide and acrylic superabsorbent polymer were mixed in a weight ratio of 1:1. It was confirmed that there is a problem that the sterilization effect is insignificant by mixing the absorbent resin in a weight ratio of 1:10.

In particular, the weight ratio of calcium peroxide and the acrylic superabsorbent polymer according to Comparative Example 2 is a ratio that is optimized to be mainly used for a toilet pad of a diaper or a blood pad included in a sanitary napkin. It was confirmed that the optimal composition of the absorbent layer for absorbing each component differs depending on the application, since the components of the droplets generated by exudation from the water are completely different.

Therefore, through the above, by using calcium peroxide among various oxygen generators and mixing the acrylic superabsorbent resin among the superabsorbent polymers in a weight ratio of 1:2, optimal absorption capacity and sterilization effect can be expected, and this Therefore, when stored in packaging containers for agricultural products such as fruits, vegetables, and flowers, or marine products such as fish and shellfish, it is possible to prevent spoilage of agricultural and marine products in the distribution process and to maintain freshness, thereby extending the shelf life. can be expected

As the specific parts of the present invention have been described in detail above, for those of ordinary skill in the art, it is clear that these specific descriptions are only preferred embodiments, and the scope of the present invention is not limited thereby. will be. Accordingly, it is intended that the substantial scope of the present invention be defined by the appended claims and their equivalents.

Claims (7)

an absorption layer formed by mixing an oxygen generator and a moisture absorbent; and
and a cover layer on which the absorbent layer is attached;
The absorption layer is formed by mixing an oxygen generator and a moisture absorbent in a weight ratio of 1: 2,
The oxygen generator is calcium peroxide,
The desiccant is an acrylic superabsorbent resin,
The cover layer further comprises a polyethylene tarpaulin attached to the top,
A food pad that is stored in a packaging container of agricultural products or aquatic products and absorbs droplets generated by exudation from food,
Further comprising a breathable sheet at the top and bottom of the food pad,
The surface of the breathable sheet will include a concave-convex structure, the food pad. delete delete delete The method of claim 1,
The cover layer is a food pad that is accommodated in a packaging container for agricultural products or aquatic products, which is pulp, and absorbs droplets generated by exudation from the food. delete delete

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