KR20130006343A

KR20130006343A - The packing materials

Info

Publication number: KR20130006343A
Application number: KR1020120073337A
Authority: KR
Inventors: 오병도
Original assignee: 티앤아이(주)
Priority date: 2011-07-08
Filing date: 2012-07-05
Publication date: 2013-01-16
Also published as: KR101195958B1

Abstract

The present invention relates to a packaging material capable of wrapping a distribution object or packaging a distribution object for distribution of food and the like.
The packaging material of the present invention is made of a synthetic resin material and has a film portion in which a plurality of pores having a size of oxygen or carbon dioxide passes but does not pass moisture, the permeability of oxygen through the pores is 20,000 ~ 40,000cc / ㎡ 24h.
Therefore, while the grapes are protected from foreign matters by the packaging material, the freshness of the grapes is maintained for a long time.

Description

Packaging material to keep fresh longer {THE PACKING MATERIALS}

The present invention relates to a packaging material capable of wrapping a distribution object or packaging a distribution object for distribution of food and the like.

Various types of packaging materials are available for distribution of various agricultural products such as potatoes, grapes, tomatoes, strawberries, aquatic products, livestock products, and various processed foods (hereinafter referred to as 'distribution object').

Most of these packaging materials are in the form of a bag having a distribution object filling space in which one direction is opened so that a distribution object can be put in, or a general container or a distribution object having a distribution object filling space is formed in a simple film form such as a wrap. It is intended to block the upper part of the dish.

The packaging material in the form of a bag has a structure in which a distribution object is placed in a distribution object filling space and fused or bundled to block the entrance of the distribution object filling space.

In addition, the packaging material in the form of a simple film, such as a wrap, is placed on the top of the container to block the distribution space of the container. (The plate is placed on the plate and the top of the plate is blocked by the wrap. To prevent exposure to air)

As described above, most conventional packaging materials have a structure in which a distribution object is placed in a closed space so that the distribution object is not exposed to air.

However, this structure has a problem that promotes corruption or discoloration when circulating agricultural products, there was a problem that the freshness is not maintained for a long time.

In order to solve this problem, the packaging materials such as Korean Patent Application No. 10-2009-0000034 (Publication Nos. 10-2010-0014087, 2010. 02. 10.) and Korea Utility Model Publication No. 20-1999-0039818 By forming a hole, a packaging material of a structure (expressed to be able to breathe) that can be in contact with the air outside the packaging material while being protected by the packaging material was created.

However, if the hole is formed in the packaging material, but the effect of preventing the corruption or discoloration of agricultural products, such as the effect was not much less than expected.

Patent Application No. 10-2009-0000034 Korean Utility Model Publication No. 20-1999-0039818

The present invention is to solve the above problems, and more particularly, to provide a packaging material that can be maintained in a fresh state of the object of distribution, in particular, the root of the plant, such as potatoes or grapes, fruit.

In the present invention, the packaging material is to have a film portion made of synthetic resin material, but the film portion is embodied in the form having a plurality of pores of the size that oxygen or carbon dioxide passes through, but not through moisture, the transmittance of oxygen through the pores is 60,000 in the case of potatoes ~ 100,000cc / ㎡ · 24h, and in the case of grapes 20,000 ~ 40,000cc / ㎡ · 24h so that freshness is maintained for a long time while potatoes or grapes are protected from foreign matter by the packaging material.

The packaging material of the present invention has a film portion made of a synthetic resin material, the film portion is made of a form having a plurality of pores of a size that oxygen or carbon dioxide passes through, but not moisture, the transmittance of oxygen through the pores is a plant such as potatoes It is within the numerical range suitable for the roots and overgrowth of grapes, so it is protected from foreign matters by the packaging material, and the freshness is maintained for a long time.

1 is a schematic view for explaining a packaging material of the present invention implemented in a conventional bag form
Figure 2 is a schematic diagram for explaining the packaging material of the present invention made of a paper absorbing the water portion of the inner wall forming the object to fill the distribution space
Figure 3 is a schematic diagram for explaining the oxygen transmittance measuring method and apparatus
Figure 4 is an image for explaining the results of the experiment to determine the appropriate oxygen permeability for distribution of grapes
5 is a schematic view for explaining the formation of pores by having a roller having a plurality of elongated needles protruding to the outside of the method of forming pores so that the packaging material passes through the rollers;

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings and experimental examples.

However, the accompanying drawings are only shown to explain the present invention in more detail, and the present invention is not limited to the form of the accompanying drawings.

The present invention relates to a packaging material used for packaging a subject for distribution such as agricultural products (potato, grape, etc.).

The packaging material of the present invention may also be implemented in the form of a film such as a wrap as in the prior art, may be implemented in the form of a bag that can block the entrance to put the distribution object.

By the way, the present invention has an object to provide a packaging material that can keep the distribution object fresh for a long time.

The inventors of the present application have noted that it is the gas generated from the moisture and bacteria and the distribution object that acts on the decay of the distribution object. It was concluded that gas release is important and there is a need to block the influx of bacteria from the outside.

In particular, in order to maintain freshness for a long time, such as agricultural products having a considerable amount of moisture by not undergoing a drying process, an appropriate amount of moisture must be maintained in the space in which the agricultural products are placed, and the gas generated from the agricultural products must be smoothly discharged. It was concluded that outside fresh air should be allowed to flow in. (The distribution targets such as agricultural products should be able to breathe, but still be able to maintain proper moisture and release gas.)

When blocking the distribution object from the outside through the packaging as in the prior art can prevent the inflow of bacteria from the outside, it is possible to prevent the loss of moisture.

However, no gas is released and no fresh air is introduced.

If a large hole is formed, there is a problem that a large amount of water loss occurs.

The inventors of the present application succeeded in maintaining the freshness of the distribution object for a long time by puncturing the pores of the size that can not pass through the moisture and communication of the air and the air is possible.

However, a large difference in the effect occurs according to the pore size, and various experiments were conducted as follows to obtain a conclusion about the proper size of the pore.

(Experiment to determine proper size of pore-conducted in lab) Pore diameter Four days 5 days later Six days Seven days After 8 days After 9 days 10 days later Not perforated 0 0 One 3 6 7 9 5㎛ 0 0 0 0 One 2 4 10 탆 0 0 0 0 0 0 One 20 탆 0 0 0 0 0 0 One 30 μm 0 0 0 0 0 0 One 40 탆 0 0 0 0 0 0 One 50 탆 0 0 0 0 0 0 One 60 탆 0 0 0 0 0 One 2 70㎛ 0 0 0 0 One 2 4 80 탆 0 0 0 0 One 4 5 90 μm 0 0 0 One 2 4 6

Remarks

The object of distribution was grapes, and after making 700 bags of pores per 1㎡ in polyethylene film, a bag was made and grapes were put into the bag, and the inlet was fused to block the inflow of air or foreign substances through the inlet.
The experiment was conducted in a laboratory where a temperature of 30 ° C. was maintained.
Numerical value of sensory test by naked eye. No change is indicated by '0' and no change such as corruption is indicated by '10'.

Through experiments as shown in Table 1, when the diameter of the pores for achieving the object of the present invention 5㎛ ~ 80㎛ was obtained that the freshness can be maintained longer than before.

However, as described above, when a bag having a pore diameter of 5 μm to 80 μm was applied to an actual distribution environment, the following results were generated.

(Experiment to find proper size of pores-experiment in distribution environment) Pore diameter Four days 5 days later Six days Seven days After 8 days After 9 days 10 days later Not punched 0 One 2 4 7 8 9 5㎛ 0 0 One 3 6 7 8 10 탆 0 0 0 0 0 One 2 20 탆 0 0 0 0 0 One 2 30 μm 0 0 0 0 0 One 3 40 탆 0 0 0 0 0 One 3 50 탆 0 0 0 0 One 2 4 60 탆 0 0 0 0 One 3 5 70㎛ 0 0 0 One 2 4 5 80 탆 0 0 One 2 3 5 6 90 μm 0 0 One 3 4 6 8
Remarks

The object of distribution was grapes, and after making 700 bags of pores per 1㎡ in a film on polyethylene, a bag was made. Grapes, which are subjects of distribution, were put in a bag, and the inlet was fused to block the inflow of air or foreign substances through the inlet.
The temperature during the experiment was 20 ° C-30 ° C.
Numerical value of sensory test by naked eye. No change is indicated by '0' and no change such as corruption is indicated by '10'.

In order to achieve the object of the present invention by applying to the actual distribution environment through the experiment as shown in Table 2, the pore size should be 10㎛ ~ 80㎛, preferably the pore diameter is 10㎛ ~ 30㎛, most preferred The conclusion was 10 micrometers-20 micrometers.

In addition, in the case of 5 μm, the effect was significantly lowered because pores were blocked by foreign matters such as dust in a circulation environment.

The experiment described only the grapes, but the experiments with potatoes and carrots obtained the same level of results as the grapes.

On the basis of the above experiments, it was concluded that the most preferable conditions under the condition of having a pore in the range of 10㎛ ~ 20㎛ made a packaging material in the form of a wrap and a wrap-type packaging material was subjected to the test of the present invention, various problems occurred.

Specifically, in the case of having the same number of pores of the same size, the freshness retention effect was excellent in some test zones, but the effect was greatly reduced in the other test zones.

In the course of various researches and experiments to find the cause, even if the packaging material to which the present invention is applied, when the printing on the perforated packaging material, the pores are blocked, the conclusion that the effect is difficult to expect.

Therefore, the packaging material of the present invention was concluded that the pores should be perforated in the state of printing of the brand or image of the product and the product description statement.

As described above, the preferred pores were applied, and after printing, the pores were not punched, and the packaging material without the pores was applied to the packaging of various agricultural products such as grapes, cucumbers, pumpkins, strawberries, bananas, bean sprouts, potatoes, and carrots. A big difference occurred.

After many years of research and efforts, it was concluded that the cause of this problem is that the amount of emitted gas and the amount of water are different for each agricultural product.

In addition, in order to apply the present invention to agricultural products, it was concluded that the permeability of oxygen through pores is very important. Was concluded.

In the above description, the oxygen permeability refers to the degree (cc) of oxygen permeation (cc) for 24 hours (24h) with respect to an area of 1㎡ of packaging material. (The space in which the distribution object is placed if the packaging material is in the form of a bag. Means the width of the wall forming the space (10))

Oxygen transmittance was measured in the same manner as in FIG.

Looking at Figure 3 it can be seen that the top and bottom of the chamber is separated into a packaging material, supplying oxygen to the top of the chamber and nitrogen to the bottom of the chamber.

As a result, some of the supplied oxygen is moved to the lower chamber through the pores to cause the loss of oxygen.

As the oxygen supplied as described above is moved to the lower chamber, the amount of oxygen generated is oxygen transmission rate.

However, the range of oxygen transmission rate (OTR: Oxygen Transmission Rate) applicable to agricultural products is about 1,000 to 100,000 cc / m 2 · 24h, which is very wide.

This, in turn, means that there is a need for research on oxygen permeability suitable for each agricultural product.

The inventors of the present application carried out experiments on grapes, potatoes, carrots, deodeok, ginseng, radishes and the like.

Grape varieties were taken from Campbell Early (House Grape), and recorded at observation at room temperature.

Through this, it was concluded that the oxygen permeability of grape was 20,000 to 40,000cc / ㎡ · 24h relatively suitable.

When grapes are distributed through the packaging material of the present invention, the appropriate oxygen permeability is 20,000 to 40,000cc / m 2, which can be seen through Table 3 and FIG.

In addition, it is understood that the oxygen transmittance is 30,000 cc / m 2 · 24h which is most preferable for the distribution of grapes.

In the case of circulating potatoes, the oxygen transmission rate is 60,000 to 100,000 cc / m 2, which can be seen from Table 4 below. (The most preferable one is also the oxygen transmission rate of 80,000 cc / m 2 · 24h.)

(Experiment to find proper oxygen permeability for distribution of grapes) Elapsed Days One 3 5 7 9 11 13 15 17 19 21 23 25 26 27 28 29 30 Packing
none

372
366
352
338
332
323
319
315
309
305
300
295
290
289
284
281
277
273 20,000
451 451 450 445 445 444 444 443 442 442 441 440 440 440 440 439 440 440 30,000
425 425 425 419 419 419 418 415 416 417 417 417 147 417 416 416 416 416 40,000
411 411 411 406 406 405 404 403 403 403 402 402 400 400 400 399 399 398
Remarks

The data value is a measure of weight (g),
To see the change in weight.

On the left, 20,000 to 40,000 represent the oxygen transmission rates (cc / m 2 · 24h).

The result of checking the state of grapes separately from the weight is attached to FIG.
In the test sphere subjected to the experiment without the bag as shown in Figure 4
The kernels and stems of grapes dried up and the kernels had relatively high granulation.

In case of packing with oxygen permeability of 20,000cc / ㎡ · 24h in bag and fusion spliced inlet, grape kernels had good elasticity but many kernels had been removed.

When the bag was fused and packed with an oxygen permeability of 30,000 cc / m 2 · 24h, grape kernels had good elasticity, and had less granulation and heat.

In the case of packing the inlet with the oxygen permeability of 40,000cc / ㎡ · 24h in the bag, the elasticity of grape kernels was good, but a lot of degranulation and fever occurred.

(Experiment to find proper oxygen permeability for distribution of potato) Elapsed Days One 3 5 7 9 11 13 15 17 19 21 23 25 26 27 28 29 30 Packing
none

902
894
877
870
862
863
855
847
839
833
826
820
812
805
799
793
788
783 50,000 901 901 900 900 900 899 899 899 898 898 898 897 897 896 896 896 895 895 60,000 902 902 902 902 902 901 901 901 900 900 899 899 898 898 897 896 896 895 70,000 901 901 901 901 900 900 898 898 897 897 895 895 894 893 893 891 891 890 80,000 902 902 902 901 901 900 898 898 897 896 895 892 891 889 887 886 884 883 90,000 900 900 899 898 898 896 894 891 890 887 885 881 878 875 872 870 867 865 100,000 903 902 901 898 895 892 889 887 884 881 878 874 871 868 865 861 857 853 110,000 902 896 890 885 881 876 872 867 861 856 850 846 841 837 832 828 825 822
Remarks

The data value is to measure the weight (g) including the wrapping paper to determine the change in weight with elapsed days.

On the left side, 50,000 to 110,000 indicate the oxygen transmission rate (cc / m 2 · 24h).

In the test zone where the experiment was conducted without a bag, the drying speed of the potato
Occurred fastest.

When packed in a bag with an oxygen transmittance of 80,000 cc / m² and 24 h
Potato dryness and decay rate was the best, and was considered the most desirable.

When packed in a bag with oxygen transmittance of 11,000cc / m² and 24h
The effect of preventing potatoes from drying out was not as expected.

When packed in a bag with an oxygen transmittance of 50,000 cc / m² and 24 h
Potatoes dried less often, but the rate of decay was high.

The inventors of the present application have examined ginseng, carrots, sweet potatoes, potatoes, deodeok, and radishes in order to find out the appropriate oxygen transmittance for keeping the roots of plants fresh for a long time. When the oxygen transmittance through the pores 21 is 40,000 ~ 100,000cc / ㎡ · 24h it was possible to obtain a satisfactory effect.

The packaging material of the present invention may be implemented in the form of a bag, or may be implemented in the form of a simple film such as a wrap.

However, it is desirable to implement in the form of a bag that can block the inlet by fusion bonding, etc. It is a space where the object to be distributed is excellent and it is preferable because it is excellent in preventing the inflow of external bacteria or foreign substances and convenient to use. It is possible to fundamentally prevent the inflow of oxygen through other parts)

That is, it is made in the form of a bag having a distribution object filling space 10 in which one direction is opened so that the distribution object can be fused or zippered (in the case of a zipper pack form) of the open portion of the distribution object filling space 10. It is implemented to prevent moisture from entering or exiting the distribution target material filling space 10 by blocking by a method such as locking.

In addition, the film portion 20 having pores forms an inner wall of the distribution object filling space 10, so that the gas in the distribution object filling space 10 passes outside the distribution object filling space 10 through the film part 20. It is discharged to, and is implemented so that the air outside the distribution object filling space 10 can enter the distribution object filling space 10 through the pores (21).

Agricultural products such as mushrooms are very sensitive to moisture.

It was found through various studies and experiments that the packaging material for distributing agricultural products such as mushrooms is preferably provided with means for catching excessive moisture and releasing the moisture when the moisture is insufficient.

When the packaging material of the present invention is implemented in the form of a bag based on this study, a part of the inner wall forming the distribution object filling space 10 may be made of a paper 30 for absorbing moisture.

In this case, when the moisture of the distribution object filling space 10 is excessive, the paper 30 absorbs and retains moisture, and when the moisture of the distribution object filling space 10 is insufficient, the moisture retained by the paper 30 is distributed. It is discharged to the filling space (10).

Therefore, the distribution object filling space (10) is in a state having a proper moisture can be distributed while maintaining the freshness for a long time in the distribution of distribution objects, such as mushrooms.

In the above description, a part of the inner wall forming the distribution object filling space 10 has been described as being made of paper.

However, it is embodied in the form of a conventional bag, but embodied in the form having a film portion 20 having pores 21, and added to the distribution object filling space 10 with a distribution object to further absorb a separate paper Through the form provided, the freshness of agricultural products such as mushrooms can be kept longer.

In this case, however, the paper inputted together with the distribution object may be shaken in the distribution object filling space 10 to cause damage to the distribution object, and the paper may be positioned in front of the pore to block the pore. There is a disadvantage.

The film unit 20 in the present invention described above may be part of the packaging material, or may be an entire part.

If the packaging material in the form of a film such as a normal wrap, all parts correspond to the film part.

In the present invention, the method for forming the pores 21 in the film portion 20 of the packaging material may use a variety of known methods such as a laser processing method or a forming method through a needle.

FIG. 5 is provided with a roller 1 having a plurality of thin long, pointed needles 1a protruding outward, and the pores in the film portion 20 as the film portion 20 passes through the roller 1. It is shown to be formed.

Reference numeral 2a is an oxygen inlet for injecting oxygen into the oxygen permeability experiment chamber, and 2b is an oxygen outlet through which the supplied oxygen is discharged.

3a is a nitrogen inlet for injecting nitrogen into the oxygen permeability experiment chamber and 3b is a nitrogen outlet through which the supplied nitrogen is discharged.

1. Rollers 1a. needle
2a. Oxygen inlet 2b. Oxygen outlet
3a. Nitrogen inlet 3b. Nitrogen outlet
10. Filling space for distribution 20. Film part
21. Pore 30. Paper

Claims

In the packaging used to package agricultural products,
It is made of a synthetic resin material and has a film portion 20 which is perforated with a plurality of pores 21 of a size that does not pass through oxygen or carbon dioxide but moisture,
The permeability of oxygen through the pores (21) is 60,000 ~ 100,000cc / ㎡ · 24h, packaging material used to wrap potatoes, to keep the freshness long.

In the packaging used to package agricultural products,
It is made of a synthetic resin material and has a film portion 20 which is perforated with a plurality of pores 21 of a size that does not pass through oxygen or carbon dioxide but moisture,
The permeability of oxygen through the pores (21) is 20,000 ~ 40,000cc / ㎡ · 24h, packaging material used to wrap grapes, to maintain the freshness long.

In the packaging used to package agricultural products,
It is made of a synthetic resin material and has a film portion 20 which is perforated with a plurality of pores 21 of a size that does not pass through oxygen or carbon dioxide but moisture,
The permeability of oxygen through the pores 21 is 40,000 ~ 100,000cc / ㎡ · 24h, used to wrap any one of ginseng, carrot, deodeok, sweet potato, radish, packaging material to keep the freshness long.

4. The method according to any one of claims 1 to 3,
The diameter of the pores 21, characterized in that 10㎛ ~ 80㎛, packaging material to keep the freshness long.

4. The method according to any one of claims 1 to 3,
The diameter of the pores 21 is 10㎛ ~ 20㎛ characterized in that the packaging material to be maintained for a long time.

4. The method according to any one of claims 1 to 3,
It consists of a bag form having a distribution object filling space 10 in which one direction is opened so that a distribution object can be introduced, but moisture is blocked by blocking an open portion of the distribution object filling space 10. Are not allowed to enter or exit
The film part 20 forms an inner wall of the distribution object filling space 10, so that the gas in the distribution object filling space 10 is discharged to the outside of the distribution object filling space 10 through the film part 20. The packing material to keep the freshness long, characterized in that the air outside the distribution object filling space (10) can enter the inside of the distribution object filling space (10) through the pores (21).