Patent Application
20250136348
The present disclosure relates to a pouch for food. More particularly, it relates to a pouch for food, which is able to self-discharge vapor during a cooking process, while it is not required to separately open the pouch for food during microwave cooking, thereby improving the texture and taste of food.
A pouch used for food is ordinarily placed in a microwave for cooking after making an incision therein and opening the pouch for food using a notch or cutting tool. In such a case, drying of the surface of the product or temperature deviation may occur depending on the extent of the opening. This may result in a deterioration in product (food) quality.
To solve this problem, a pouch for food that may be cooked in a microwave without cutting the pouch for food has been developed.
However, in the case of a pouch for food to be cooked in a microwave oven without cutting as described above, there is a problem in that the sheet of the pouch is ruptured by vapor generated in the pouch for food during the microwave cooking process. In such a case, the ruptured pouch for food may cause a problem in that the content of the pouch may leak out of the pouch, and the quality of the product is deteriorated.
Therefore, there is a need to develop a pouch for food that may be cooked in a microwave without cutting the pouch for food and may appropriately control vapor pressure.
An object of the present disclosure is to provide a pouch for food that is able to self-discharge vapor during a cooking process without the opening of the pouch for food during microwave cooking.
The pouch for food according to an embodiment of the present disclosure comprises a sheet forming an inner space with its edges fused; a perforated line formed on the sheet; a first exhaust unit positioned in a central region of the sheet and comprising a plurality of first exhaust holes; and a second exhaust unit positioned in a peripheral region of the sheet as spaced apart from the first exhaust unit and comprising a plurality of second exhaust holes, wherein the plurality of second exhaust holes are arranged perpendicular to the perforated line.
According to an embodiment of the present disclosure, the first exhaust holes and the second exhaust holes may each be holes that pass through the sheet.
According to an embodiment of the present disclosure, the first exhaust holes may be arranged in a direction parallel to the perforated line and a direction perpendicular to the perforated line, respectively.
According to an embodiment of the present disclosure, the number of the first exhaust holes arranged in the direction perpendicular to the perforated line may be greater than the number of the first exhaust holes arranged in the direction parallel to the perforated line.
According to an embodiment of the present disclosure, the number of the first exhaust holes may be 6 to 9.
According to an embodiment of the present disclosure, the second exhaust unit may be positioned on the left and right sides of the first exhaust unit, respectively.
According to an embodiment of the present disclosure, the second exhaust unit positioned on the left side of the first exhaust unit and the second exhaust unit positioned on the right side may comprise the same number of the second exhaust holes.
According to an embodiment of the present disclosure, the total number of the plurality of second exhaust holes may be 12 to 14.
According to an embodiment of the present disclosure, the total number of the plurality of first exhaust holes and the plurality of second exhaust holes may be 20 to 22.
According to an embodiment of the present disclosure, the sheet may not comprise other penetrating holes than the first exhaust holes and the second exhaust holes.
According to an embodiment of the present disclosure, the first exhaust holes may be formed on the front side of the pouch for food, and the second exhaust holes may be formed on the rear side of the pouch for food.
According to an embodiment of the present disclosure, the number of the plurality of first exhaust holes may be smaller than the number of the plurality of second exhaust holes.
According to an embodiment of the present disclosure, the first exhaust holes and the second exhaust holes may have sizes different from each other.
According to an embodiment of the present disclosure, the width of the second exhaust hole may be greater than the width of the first exhaust hole.
According to an embodiment of the present disclosure, the ratio of the width of the second exhaust hole to the width of the first exhaust hole may be 1.3 to 2.5.
According to an embodiment of the present disclosure, the spacing between the plurality of second exhaust holes may be greater than the spacing between the plurality of first exhaust holes.
According to an embodiment of the present disclosure, the depth of the perforated line may be 8 μm to 10 μm.
According to an embodiment of the present disclosure, the tensile strength at break of the perforated line may be 30 N or more and 50 N or less.
According to an embodiment of the present disclosure, the sheet may have a laminated structure of a polyethylene film and a polyethylene terephthalate film.
According to an embodiment of the present disclosure, the polyethylene film is positioned adjacent to the inner space, and the perforated line may be formed only on the polyethylene terephthalate film.
In the pouch for food according to an embodiment of the present disclosure, the vapor pressure in the inner space can be constantly maintained during a cooking process using a microwave oven. That is, since the pressure of vapor generated in the heating process using a microwave oven can be kept constant, the temperature and quality of the product are constant, and heating can be performed quickly. In addition, a steam is maintained inside the pouch for food during the heating process, so that the product does not dry out, and moisture can be maintained.
In addition, since the moisture and pressure in the inner space are maintained relatively high, steamed cooking can be performed. Accordingly, the texture of the heated food can be further enhanced.
In addition, the pouch for food according to an embodiment of the present disclosure is provided with a second exhaust unit at a position adjacent to the perforated line. The second exhaust unit may maintain the vapor pressure applied to the perforated line and around the perforated line to be relatively low as compared with the vapor pressures at other locations. Accordingly, it is possible to more effectively prevent the perforated line from being unintentionally broken during the cooking process using a microwave oven.
In addition, the second exhaust unit may be formed at a position adjacent to a side of the pouch for food. Accordingly, it is possible to prevent vapor from being discharged concentratedly in the central region where the first exhaust unit is positioned and to maintain an overall uniform temperature and pressure in the inner space.
Hereinafter, embodiments according to the present disclosure will be described with reference to the accompanying drawings.
A pouch for food according to an embodiment of the present disclosure may comprise a sheet provided with a perforated line and an exhaust unit.
In the present disclosure, the term “food” is not limited as long as it is subject to the pouch for food of the present disclosure. Specifically, the food may be one that requires exhausting during cooking, and more specifically, it may be food that requires the exhaustion of steam generated during a microwave cooking process. Examples of such food include frozen or refrigerated dumplings (mandu), frozen or refrigerated food materials (e.g., vegetables, meats), and instant rice.
In the following description, the horizontal direction or left-right direction refers to the X-axis direction shown in
The pouch (1) for food according to an embodiment of the present disclosure may comprise a sheet (10). In addition, the sheet (10) may be provided with a perforated line (40) and an exhaust unit (100, 200).
The sheet (10) may be composed of a synthetic resin film having a predetermined area. The synthetic resin film may comprise a polyolefin or a polyester. Specifically, the synthetic resin film may comprise a polyethylene (PE) film or a polyethylene terephthalate (PET) film. The polyethylene may be a linear low-density polyethylene (LLDPE).
In the pouch (1) for food according to an embodiment of the present disclosure, a fusion part (20) in which the edges of two sheets (10) are fused to each other is provided in the outer region, and an inner space (30) having a predetermined volume may be formed inside the fusion part (20). Here, the edge refers to an outer peripheral portion of the sheet (10), and it does not necessarily mean only the outermost portion. In addition, the term “two sheets (10)” does not mean only two sheets (10) that are separated from each other. For example, it still falls within the scope of the present disclosure that one sheet (10) is folded such that one portion and another portion of the sheet (10) are fused to each other, and an inner space (30) is formed between the fused portions. The sheet (10) may comprise a front sheet (10) positioned in front of the inner space (30) and a rear sheet (10) positioned in the rear of the inner space (30).
Referring to
The first film (12) may comprise a polyethylene terephthalate, and the second film (14) may comprise a polyethylene. For example, the sheet (10) may have a laminated structure of a polyethylene film and a polyethylene terephthalate film. The sheet (10) can have high thermal resistance by virtue of the laminated structure, so that damage to the pouch (1) for food can be prevented even when it is cooked in a microwave oven.
The thickness (T2) of the second film (14) may be greater than the thickness (T1) of the first film (12).
For example, the thickness (T2) of the second film (14) may be 30 μm or more, 40 μm or more, or 45 μm or more, and may be 70 μm or less, 60 μm or less, or 55 μm or less. More specifically, the thickness (T2) of the second film (14) may be about 50 μm. For example, the thickness (T1) of the first film (12) may be 5 μm or more, 8 μm or more, or 10 μm or more, and may be 20 μm or less, 18 μm or less, or 15 μm or less. More specifically, the thickness (T1) of the first film (12) may be about 12 μm. As a result, the thermal resistance, durability, chemical resistance, and water resistance of the pouch (1) for food can be enhanced altogether, so that the moisture and pressure inside the pouch (1) for food can be maintained high when it is cooked in a microwave oven, thereby enhancing the texture of the heated food.
Food and the like may be accommodated in the inner space (30).
At least one position of the sheet (10) is provided with the perforated line (40). The perforated line (40) is formed so that the user may easily cut the sheet (10). That is, the perforated line (40) may have an easy-tear configuration. The perforated line (40) may be, for example, a part processed through laser processing, stamping, or the like. Each processed part that constitutes the perforated line (40), for example, may have a depth (T3) of 8 to 10 μm and a width of 200 to 400 μm. The perforated line (40) may be formed long in the left-right direction on the upper region of the sheet (10), for example, as shown in
As the perforated line (40) having the above configuration is provided, the pouch (1) for food according to the present disclosure may be easily opened using the perforated line (40). In addition, as the perforated line (40) has the depth and width as described above, it may have the effect of achieving the simple opening of the pouch (1) for food and, at the same time, may have an effect of preventing the occurrence of unintentional breakage of the perforated line (40) in a microwave cooking process. For example, in the case of the perforated line (40) having a depth of greater than 10 μm, specifically, greater than 10 μm to 12 μm, it was confirmed that unintentional breakage occurred during a microwave cooking process.
The tensile strength at break of the perforated line (40) may be 30 N or more and 50 N or less. If the tensile strength at break of the perforated line (40) is less than 30 N, the perforated line (40) may be easily broken, and the pouch (1) for food may be damaged due to vapor pressure during a microwave cooking process. In addition, if the tensile strength at break of the perforated line (40) exceeds 50 N, too high a force may be required to open the pouch, which may deteriorate the user's convenience.
The tensile strength at break refers to the maximum stress until the perforated line (40) breaks due to a tensile load. The tensile strength at break may be measured according to the ASTM D882 standard using, for example, a universal testing machine (UTM) such as 34SC-1 from Instron.
The perforated line (40) may be processed through a laser score material removal process. For example, the depth of the laser cut is set to about 10 μm, and the perforated line (40) may be formed by irradiating the laser in the left-right direction on the upper region of the sheet (10). As a result, the tensile strength at break of the perforated line (40) may be easily adjusted to the above range.
According to an embodiment, when the sheet (10) has a laminated structure of a first film (12) and a second film (14), the perforated line (40) may be formed only on the first film (12). For example, the depth (T3) of the laser cut may be set so as not to exceed the thickness (T1) of the first film (12). As a result, the pouch (1) for food can be easily opened while unintentional breakage of the perforated line (40) is prevented during a microwave cooking process, and the thermal resistance, water resistance, and chemical resistance of the sheet (10) are maintained to be excellent, thereby making microwave cooking possible.
Meanwhile, according to an embodiment, the perforated line (40) may be provided with a cutting initiation part (42). The cutting initiation part (42) is a part that may be initiated to be cut when the user cuts the perforated line (40) and is a part that the user may grip the pouch for food by hand. As shown in
The exhaust unit (100) is formed at at least one position of the sheet (10).
The exhaust unit (100) may comprise at least one of a first exhaust unit (100) and a second exhaust unit (200).
The first exhaust unit (100) may be formed at at least one position of the sheet (10). According to an embodiment, the first exhaust unit (100) may be positioned in a central region of the sheet (10).
The first exhaust unit (100) may be provided on at least one of the front sheet (10) that constitute the front side of the inner space (30) and the rear sheet (10) that constitute the rear side of the inner space (30).
The first exhaust unit (100) may comprise at least one first exhaust hole (102). The first exhaust hole (102) is configured as a hole that passes through the sheet (10). According to an embodiment, the first exhaust hole (102) may completely pass through the sheet (10). As a result, the inner space (30) and the exterior of the sheet (10) may be communicated by the first exhaust hole (102).
The first exhaust unit (100) may function as a vapor discharge void that prevents the sheet (10) of the pouch (1) for food from being ruptured by vapor pressure during a cooking process using a microwave oven.
A plurality of the first exhaust holes (102) may be provided. According to an embodiment, the number of the first exhaust holes (102) may be 6 to 9. If the number of the first exhaust holes (102) is less than 6, the exhaust of vapor may not be sufficient during a cooking process, so that the sheet (10) may be ruptured. If the number of the first exhaust holes (102) is more than 9, the vapor is excessively exhausted during a cooking process, so that the vapor pressure may not be maintained, and sanitary problems may occur. According to an embodiment, the number of the first exhaust holes (102) may be 6.
The arrangement of the plurality of first exhaust holes (102) may be arbitrary. According to an embodiment, when the number of the first exhaust holes (102) is 6, they may have a matrix structure of 3×2 in the horizontal and vertical directions. However, it is not limited thereto.
The shape and size of the respective first exhaust holes (102) may be constant. For example, the first exhaust hole (102) may be a hole having a width P. The width P of the first exhaust hole (102) may be, for example, 200 to 300 μm.
The spacing between the first exhaust holes (102) may have a predetermined size D1.
According to an embodiment, D1 may be 3 to 4 mm. That is, if D1 is too small or too large, an appropriate exhaust effect may not be ensured, or a portion between the first exhaust holes (102) may be torn. Thus, D1 may be 3 to 4 mm.
The second exhaust unit (200) may be positioned adjacent to the perforated line (40). Here, the meaning of being adjacent to the perforated line (40) is that the position of the second exhaust unit (200), as compared with the position of the first exhaust unit (100), is adjacent to the perforated line (40).
The second exhaust unit (200) may comprise at least one second exhaust hole (202). The second exhaust hole (202) is configured as a hole that passes through the sheet (10).
The second exhaust unit (200) is a vapor discharge void that prevents the sheet (10) of the pouch (1) for food from being ruptured by vapor pressure during a cooking process using a microwave oven. In particular, it may function as an anti-breakage void that prevents the perforated line (40) from being unintentionally broken by vapor pressure.
A plurality of the second exhaust holes (202) may be provided. According to an embodiment, the number of the second exhaust holes (202) may be 3 to 5. For example, the number of the second exhaust holes (202) may be 3.
The arrangement of the plurality of second exhaust holes (202) may be arbitrary. According to an embodiment, the plurality of second exhaust holes (202) may be arranged in the left-right direction to form one row. In addition, the second exhaust holes (202) may be arranged parallel to the perforated line (40).
The shape and size of the respective second exhaust holes (202) may be constant. For example, the second exhaust hole (202) may be a hole having a width Q. The width Q of the second exhaust hole (202) may be, for example, 400 to 500 μm.
The spacing between the second exhaust holes (202) may have a predetermined size D2.
The second exhaust holes (202) may have a predetermined distance D3 from the perforated line (40).
According to an embodiment, D2 and D3 may each be 2 to 4 mm. That is, if D2 and D3 are too large, the effect of preventing breakage of the perforated line (40) during microwave cooking may not be secured. On the other hand, if D2 and D3 are too small, the portion between the perforated line (40) and the second exhaust holes (202), or the portion between the second exhaust holes (202), may be torn off. Thus, D2 and D3 may each be 2 to 4 mm.
Meanwhile, the first exhaust unit (100) and the second exhaust unit (200) may be respectively formed on opposite sides of the pouch (1) for food in the front-rear direction. For example, the first exhaust unit (100) may be formed in the front sheet (10) of the pouch (1) for food, and the second exhaust unit (200) may be formed in the rear sheet (10) of the pouch (1) for food.
As the first exhaust unit (100) and the second exhaust unit (200) are respectively formed on opposite sides in the front-rear direction of the pouch (1) for food as described above, it is possible to prevent the exhaust pressure from being concentrated on one side. Therefore, damage to the pouch (1) for food may be prevented.
According to an embodiment, the second exhaust unit (200) may be positioned opposite the cutting initiation part (42) of the perforated line (40). That is, when the cutting initiation part (42) is positioned at one end of the perforated line (40), the second exhaust unit (200) may be positioned at the other end that is the opposite end to the perforated line (40). For example, as shown in
As in the above embodiment, the effect of the second exhaust unit (200) positioned on the opposite side of the cutting initiation part (42) of the perforated line (40) will be described as follows. When the pouch (1) for food is taken out once the cooking process has been completed, the residual vapor in the pouch (1) for food may be discharged through the second exhaust unit (200). In such an event, when the user holds the pouch (1) for food by hand in order to tear the perforation line (40), in particular, when the portion where the second exhaust unit (200) is provided is held by hand, the user may be burned by the vapor discharged through the second exhaust unit (200). According to the embodiment, as the cutting initiation part (42) of the perforated line (40) is positioned opposite to the position where the second exhaust unit (200) is provided, the user may tear off the perforated line (40) by holding the opposite side of the position where the second exhaust unit (200) is provided. In particular, according to the embodiment, a marker for inducing the user's grip may be indicated in the cutting initiation part (42), and the user may naturally avoid gripping the position where the second exhaust unit 200 is provided and rather grip the cutting initiation part (42). Accordingly, the possibility of the occurrence of burn injuries as described above may be reduced.
In addition, according to the embodiment, when the user grips the pouch (1) for food according to the embodiment of the present disclosure, the user avoids gripping the positions (the first exhaust unit (100) and the second exhaust unit (200)) through which vapor is exhausted and is capable of gripping other positions. Thus, the occurrence of burn injuries as described above can be prevented while user convenience can be improved.
In the following description, the horizontal direction or left-right direction refers to the X-axis direction shown in
The pouch (1) for food may comprise a sheet (10). In addition, the sheet (10) may be provided with a perforated line (40) and an exhaust unit.
The sheet (10) may be composed of a synthetic resin film having a predetermined area. The synthetic resin film may comprise a polyolefin or a polyester.
According to an embodiment, the sheet (10) may have a structure in which a first film (12) and a second film (14) are laminated as described in
In the pouch (1) for food, a fusion part (20) in which the edges of two sheets (10) are fused to each other is provided in the outer region, and an inner space (30) having a predetermined volume may be formed inside the fusion part (20). Alternatively, one sheet (10) is folded such that one portion and another portion of the sheet (10) are fused to each other, and an inner space (30) is formed between the fused portions.
Food and the like may be accommodated in the inner space (30).
At least one position of the sheet (10) is provided with the perforated line (40). The perforated line (40) may be, for example, a part processed through laser processing, stamping, or the like. Each processed part that constitutes the perforated line (40) may have a depth of 8 μm to 10 μm and a width of 200 μm to 400 μm. The perforated line (40) may be formed long in the left-right direction on the upper region of the sheet (10), for example, as shown in
The tensile strength at break of the perforated line (40) may be 30 N or more to 50 N or less. The perforated line (40) may be processed through a laser score material removal process.
According to an embodiment, when the sheet (10) has a laminated structure of a first film (12) and a second film (14), the perforated line (40) may be formed only on the first film (12).
The perforated line (40) may be provided with a cutting initiation part (42). As shown in
The exhaust unit (100) is formed at at least one position of the sheet (10). The exhaust unit (100) may comprise a first exhaust unit (100) and a second exhaust unit (200).
The first exhaust unit (100) may be positioned in a central region of the sheet (10).
The first exhaust unit (100) may be provided on at least one of the front sheet (10) that constitute the front side of the inner space (30) and the rear sheet (10) that constitute the rear side of the inner space (30).
The first exhaust unit (100) may comprise at least one first exhaust hole (102). The first exhaust hole (102) is configured as a hole that passes through the sheet (10). According to an embodiment, the first exhaust hole (102) may completely pass through the sheet (10).
A plurality of the first exhaust holes (102) may be provided. According to an embodiment, the number of the first exhaust holes (102) may be 6 to 9. If the number of the first exhaust holes (102) is less than 6, the exhaust of vapor may not be sufficient during a cooking process, so that the sheet (10) may be ruptured. If the number of the first exhaust holes (102) is more than 9, the vapor is excessively exhausted during a cooking process, so that the vapor pressure may not be maintained, and sanitary problems may occur. More specifically, the number of the first exhaust holes (102) may be 8. When the number of the first exhaust holes (102) is 8, the vapor pressure and temperature are appropriately maintained during a cooking process while the sheet (10) is prevented from rupturing, and the possibility of sanitary problems occurring may also be low.
The arrangement of the plurality of first exhaust holes (102) may be arbitrary.
According to an embodiment, the plurality of first exhaust holes (102) may be arranged in a matrix structure in the horizontal and vertical directions. The horizontal direction may be the X direction parallel to the perforated line (40). The vertical direction may be the Y direction perpendicular to the perforated line (40).
According to an embodiment, the number of the first exhaust holes (102) arranged in the vertical direction may be greater than the number of the first exhaust holes (102) arranged in the horizontal direction. Specifically, when the number of the first exhaust holes (102) is 8, they may have a matrix structure of 2×4 in the horizontal and vertical directions.
For example, if the first exhaust holes (102) are arranged longer in the horizontal direction rather than the vertical direction that is the roll unwinding direction, the first exhaust holes (102) may be broken due to the high tensile strength applied to the sheet (100) when the first exhaust holes (102) are formed. In addition, as the first exhaust holes (102) are formed to be arranged longer in a direction perpendicular to the roll unwinding direction, the processing time of the sheet (10) may relatively increase, which may lower productivity.
The shape and size of the respective first exhaust holes (102) may be constant. The width of the first exhaust hole (102) may be, for example, 200 μm to 300 μm.
The spacing between the first exhaust holes (102) may be 3 mm to 4 mm. That is, if the spacing between the first exhaust holes (102) is too small or too large, an appropriate exhaust effect may not be ensured, or a portion between the first exhaust holes (102) may be torn. Thus, the spacing between the first exhaust holes (102) may be 3 mm to 4 mm.
According to an embodiment, the first exhaust hole (102) may have a circular shape.
The second exhaust unit (200) may comprise second exhaust holes (202) positioned in a peripheral region of the sheet (10). For example, the second exhaust unit (200) may be positioned in the peripheral region of the sheet (10) as spaced apart from the first exhaust unit (100).
The second exhaust unit (200) may be formed in both the left peripheral region and the right peripheral region of the sheet (10). Specifically, the second exhaust unit (200) may be formed on both sides of the first exhaust unit (100) in the left-right direction as spaced apart from the first exhaust unit (100).
The second exhaust unit (200) may be positioned adjacent to the perforated line (40). For example, the distance between the second exhaust hole (202) closest to the perforated line (40) and the perforated line (40) may be smaller than the distance between the first exhaust hole (102) and the perforated line (40).
The second exhaust unit (200) may comprise at least one second exhaust hole (202). The second exhaust hole (202) is configured as a hole that passes through the sheet (10). Specifically, the second exhaust hole (202) may completely pass through the sheet (10). As a result, the inner space (30) and the exterior of the sheet (10) may be communicated by the second exhaust hole (202).
A plurality of the second exhaust holes (202) may be provided. According to an embodiment, the number of the second exhaust holes (202) may be 12 to 14. If the number of the second exhaust holes (202) is less than 12, the exhaust of vapor may not be sufficient during a cooking process, so that the perforated line (40) may be broken. If the number of the second exhaust holes (202) is more than 14, the vapor is excessively exhausted during a cooking process, so that the vapor pressure may not be maintained, and sanitary problems may occur. More specifically, the number of the second exhaust holes (202) may be 14. When the number of the second exhaust holes (202) is 14, the vapor pressure is sufficiently maintained during a cooking process while the breakage of the perforated line (40) is prevented, and the possibility of sanitary problems occurring may also be low.
According to an embodiment, the number of the second exhaust holes (202) positioned on the left side of the first exhaust unit (100) and the number of the second exhaust holes (202) positioned on the right side of the first exhaust unit (100) may be the same. As a result, the exhaust pressure on the left and right sides of the pouch (1) for food can be equalized, so that the temperature of the inner space (30) can be uniform throughout.
According to an embodiment, the plurality of second exhaust holes (202) may be arranged to form one row on each of the left and right sides of the sheet (10). In addition, the second exhaust holes (202) may be arranged perpendicular to the perforated line (40). With this arrangement, the exhaust pressure can be equalized in the respect regions of the pouch (1) for food, so that the temperature of the inner space (30) can be uniform throughout.
More specifically, seven second exhaust holes (202) may be arranged on each of the left and right sides of the sheet (10), and the seven second exhaust holes (202) may form one row in a direction perpendicular to the perforated line (40). As the seven second exhaust holes (202) are arranged on each of the left and right sides of the sheet (10), the cooking temperature can be more uniform when the product is heated.
The shape and size of the respective second exhaust holes (202) may be constant. The width of the second exhaust hole (202) may be, for example, 400 μm to 500 μm.
According to an embodiment of the present disclosure, the first exhaust holes (102) and the second exhaust holes (202) may have sizes different from each other. For example, the width of the second exhaust hole (202) may be greater than the width of the first exhaust hole (102). The first exhaust holes (102) that are concentratedly arranged in a central region of the sheet (10) have a relatively small size, and the second exhaust holes (202) that are more sparsely arranged in the peripheral region of the sheet (10) have a relatively large size. As a result, the internal temperature can be maintained high while the vapor discharge and exhaust pressure are prevented from being concentrated on one region, and the temperature of the inner space (30) can be maintained evenly.
According to an embodiment, the ratio of the width of the second exhaust hole (202) to the width of the first exhaust hole (102) may be 1.3 to 2.5. For example, the ratio of the width of the second exhaust hole (202) to the width of the first exhaust hole (102) may be 1.3 to 2, 1.5 to 2, or 1.6 to 2. Within the above range, it is possible to shorten the cooking time and further enhance the cooking quality while the perforated line is prevented from rupturing during a cooking process.
The spacing between the second exhaust holes (202) may be 18 mm to 22 mm. More specifically, the spacing between the second exhaust holes (202) may be 20 mm. As a result, the processability of the second exhaust holes (202) can be excellent, the heating temperature of the inner space can be made uniform, and the exhaust pressure can be prevented from being concentrated on one region. In addition, if the spacing between the second exhaust holes (202) is too small, the portion between the second exhaust holes (202) may be torn.
According to an embodiment, the spacing between the second exhaust holes (202) may be greater than the spacing between the first exhaust holes (102). For example, since the edges of the pouch (1) for food are folded or fused, the width of the inner space (30) may become narrower from the center to the edges. Accordingly, since the vapor generated during a cooking process may be concentrated on the central region of the inner space (30), vapor discharge may be made smoother as the first exhaust holes (102) are arranged more concentratedly in the central region of the sheet (10).
In addition, as the second exhaust holes (202) positioned on the side of the pouch (1) for food are arranged at a relatively wide spacing, the second exhaust unit (200) can cover a wider area, so that the temperature and pressure of the inner space (30) can be maintained evenly.
According to an embodiment, the ratio of the spacing between the second exhaust holes (202) to the spacing between the first exhaust holes (102) may be 4 to 8, for example, 4 to 7, 5 to 7, or 5 to 6. Within the above range, it is possible to more effectively prevent the pouch (1) for food from rupturing while the temperature inside the inner space (30) can be maintained uniformly at a higher temperature.
According to an embodiment, the second exhaust hole (202) may have a circular shape.
According to an embodiment, both the first exhaust unit (100) and the second exhaust unit (200) may be formed on the front side of the pouch (1) for food. For example, the first exhaust unit (100) and the second exhaust unit (200) may be formed in the front sheet of the pouch (1) for food.
The distance between the inner edge of the fusion part (20) and the second exhaust holes (202) may be 1 mm to 10 mm, 1 mm to 8 mm, 2 mm to 7 mm, or 3 mm to 6 mm.
According to another embodiment, the first exhaust unit (100) and the second exhaust unit (200) may be respectively formed on opposite sides of the pouch (1) for food in the front-rear direction. For example, the first exhaust unit (100) may be formed in the front sheet (10) of the pouch (1) for food, and the second exhaust unit (200) may be formed in the rear sheet (10) of the pouch (1) for food. As a result, the exhaust pressure is prevented from being concentrated on one side, thereby preventing damage to the pouch (1) for food.
The first exhaust unit (100) may be formed in the inner region of the folding line (50) in the left-right direction, and the second exhaust unit (200) may be formed in the outer region of the folding line (50). As the sheet (10) is folded along the folding line (50), the first exhaust unit (100) may be positioned on the front side of the pouch (1) for food, and the second exhaust unit (200) may be positioned on the rear side.
The width P of the first exhaust hole (102) may be 200 μm to 300 μm. The spacing D1 between the first exhaust holes (102) may be 3 mm to 4 mm.
According to an embodiment, the distance D6 between the first exhaust unit (100) and the folding line (50) may be 50 mm to 90 mm or 60 mm to 80 mm. D6 may be the distance between the first exhaust hole (102) closest to the folding line (50) and the folding line (50). D6 may be the distance between the side of the pouch (1) for food and the first exhaust unit (100) when the sheet (10) is folded along the folding line (50).
The width Q of the second exhaust hole (202) may be 400 μm to 500 μm. The spacing D2 between the second exhaust holes (202) may be 18 mm to 22 mm. More specifically, D2 may be about 20 mm.
According to an embodiment, the distance D7 between the second exhaust holes (202) and the folding line (50) may be 1 mm to 10 mm. Specifically, D7 may be 1 mm to 8 mm, 2 mm to 7 mm, or 3 mm to 6 mm. For example, the distance between the second exhaust holes (202) and the folding line (50) may be about 5 mm. D7 may be the distance between the side of the pouch (1) for food and the second exhaust unit (200) when the sheet (10) is folded along the folding line (50).
As a result, the second exhaust unit (200) can be positioned on the side of the pouch (1) for food and spaced apart from the first exhaust unit (100), thereby preventing the exhaust pressure from being concentrated on one region while also preventing the contents contained in the inner space from being discharged through the rear side. For example, if the second exhaust unit (200) is formed in a central region, or in a region adjacent to the central region, of the rear side of the pouch (1) for food, the contents contained in the inner space (30) may be discharged together with the vapor. In such a case, consumers may be at increased risk of burn injuries, and hygiene problems may also arise due to contamination.
According to an embodiment, the first exhaust unit (100) and the second exhaust unit (200) may be positioned at a predetermined distance from the perforated line (40).
For example, the distance D4 between the first exhaust unit (100) and the perforated line (40) may be 70 mm or more, 80 mm or more, or 90 mm or more, and may be 110 mm or less or 100 mm or less. However, it is not limited thereto. D4 refers to the distance between the first exhaust hole (102) closest to the perforated line (40) and the perforated line (40).
For example, the distance D3 between the second exhaust unit (200) and the perforated line (40) may be 30 mm or more, 35 mm or more, or 40 mm or more, and may be 70 mm or less, 60 mm or less, or 50 mm or less. However, it is not limited thereto. D3 refers to the distance between the second exhaust hole (202) closest to the perforated line (40) and the perforated line (40).
According to the embodiment, when the pouch (1) for food is taken out once the cooking process has been completed, the residual vapor in the pouch (1) for food may be discharged through the first exhaust unit (100) and the second exhaust unit (200). In such an event, if the perforated line (40) is positioned adjacent to the first exhaust unit (100) and the second exhaust unit (200), when the user holds the pouch (1) for food by hand in order to tear the perforation line (40), the user may be burned by the vapor discharged through the first exhaust unit (100) and the second exhaust unit (200). According to the embodiment, since the perforation line (40) is spaced apart from the first exhaust unit (100) and the second exhaust unit (200) by a predetermined distance, the possibility of a burn injuries as described above can be reduced.
The distance D5 between the first exhaust unit (100) and the second exhaust unit (200) on the X-Y plane may be 60 mm or more. For example, D5 may be 60 mm to 80 mm or 65 mm to 80 mm. If D5 is too small, the exhaust pressure may be concentrated on one region, which may cause the internal temperature and pressure to become uneven, resulting in poor cooking quality or increased cooking time.
According to an embodiment, the ratio D6/D8 of the distance D6 between one side of the pouch (1) for food and the first exhaust unit (100) to the width D8 of the pouch (1) for food may be 0.4 to 0.6, 0.45 to 0.55, or 0.45 to 0.5.
According to an embodiment, the ratio D10/D9 of the distance D10 between the upper side of the pouch (1) for food and the first exhaust unit (100) to the length D9 of the pouch (1) for food may be 0.4 to 0.55 or 0.45 to 0.5.
According to an embodiment, the ratio D11/D9 of the distance D11 between the lower side of the pouch (1) for food and the first exhaust unit (100) to the length D9 of the pouch (1) for food may be 0.4 to 0.55 or 0.45 to 0.5.
As a result, the first exhaust unit (100) may be positioned in a central region of the pouch (1) for food, so that vapor concentrated on the central region can be effectively discharged, and the phenomenon of pouch rupturing during a cooking process can be prevented.
According to an embodiment, the ratio D7/D8 of the distance D7 between one side of the pouch (1) for food and the second exhaust unit (200) to the width D8 of the pouch (1) for food may be 0.01 to 0.1, 0.02 to 0.05, or 0.03 to 0.05. As a result, vapor can be discharged more smoothly from the side of the pouch (1) for food through the second exhaust unit (200), and more uniform exhaust pressure and heating temperature can be provided throughout the inner space (30), so that cooking quality can be further improved.
According to an embodiment, the width D8 of the pouch (1) for food may be 100 mm to 180 mm. D8 may be the width of the front sheet (10) and the rear sheet (10). For example, D8 may be 120 mm to 170 mm or 130 mm to 160 mm. However, it is not limited thereto.
According to an embodiment, the length D9 of the pouch (1) for food may be 180 mm to 300 mm. D9 may be the sum of the length of the sheet (10) and the length of the fusion part (20). For example, D9 may be 200 mm to 280 mm or 200 mm to 260 mm. However, it is not limited thereto.
The pouch (1) for food may not comprise other penetrating holes than the first exhaust unit (100) and the second exhaust unit (200). For example, any hole passing through the sheet (10) may not be formed between the first exhaust unit (100) and the second exhaust unit (200).
Meanwhile, the sum of the number of the first exhaust holes (102) and the number of the second exhaust holes (202) may be 20 or more and 22 or less. If the total number of the exhaust holes formed in the sheet (10) is less than 20, vapor may not be sufficiently discharged during microwave cooking, causing the perforated line (40) to break during cooking. In addition, if the total number of the exhaust holes formed in the sheet (10) exceeds 22, excessive vapor may be discharged through the exhaust holes during a cooking process, which may prevent the vapor pressure and cooking temperature from being maintained at the desired level, and the processing time of the sheet (10) may increase, thereby reducing productivity.
More specifically, the sum of the number of the first exhaust holes (102) and the number of the second exhaust holes (202) may be 22. When the total number of the exhaust holes is 22, the vapor pressure is sufficiently maintained during a cooking process while the breakage of the perforated line (40) is prevented, and the possibility of sanitary problems occurring may also be low.
Hereinafter, the experimental results of the present disclosure are described.
Below is a table showing the experimental results according to the total number of first exhaust holes (102) and second exhaust holes (202). In the table below, a case where the perforated line (40) broke or damage to the sheet (10) occurred is indicated as Fail, and a case where the perforated line (40) was prevented from breakage is indicated as Pass.
According to the experimental results, when the total number of the first exhaust holes (102) and the second exhaust holes (202) was less than 20, breakage of the perforated line (40) was observed, and when the total number was 20 or more, breakage was prevented.
The purpose of the experiment is to check whether the quality of the product is maintained when steamed dumpling products are cooked in a microwave oven (1,000 W, 2 minutes) and to check the results by changing the total number of the first exhaust holes (102) and the second exhaust holes (202), respectively (0, 9, 22, and 30). Corner Cut refers to a state in which exhaust holes are not formed and part of the sheet edge is opened.
Specifically, each sample contained six dumplings, sealed, and cooked in a microwave oven. Then, the temperature of each dumpling was measured. The experimental results indicate that the highest internal temperature was achieved when the total number of exhaust holes was 22, and each dumpling maintained an even temperature throughout. Accordingly, it was confirmed that when the total number of exhaust holes is 22, the contents can be cooked evenly, and the cooking time can also be shortened.
According to an embodiment, when the total number of the first exhaust holes (102) and the second exhaust holes (202) is 22, the number of the first exhaust holes (102) may be 8, and the number of the second exhaust holes (202) may be 14. More specifically, as shown in
Sample 12 had a structure in which the number of the first exhaust holes (102) was 22, and the second exhaust holes (202) were not formed, as shown in
Sample 14 had a structure in which the number of the first exhaust holes (102) was 8, arranged in a matrix structure of 2×4 in the horizontal and vertical directions, and the number of the second exhaust holes (202) was 14, arranged in a row of seven on each of the left and right sides of the sheet, as shown in
Each sample contained six dumplings, sealed, and cooked in a microwave oven (1,000 W, 2 minutes). Then, the temperature of each dumpling was measured. The experimental results indicate that Sample 14 maintained an overall even internal temperature, along with a high internal temperature. In contrast, for Samples 12 and 13, the internal temperature was low overall and unevenly distributed. Accordingly, it was confirmed that when the first exhaust unit (100) and the second exhaust unit (200) have the same configuration as Sample 13, a uniform cooking effect and a shortened cooking time effect can be achieved.
Hereinafter, the use and effects of the pouch (1) for food according to the present disclosure will be described.
The pouch (1) for food according to the present disclosure is put into a microwave oven without cutting the perforated line (40) and then heated. That is, it is not necessary to separately open the pouch (1) for food before microwave cooking. Accordingly, the vapor generated in the process of cooking the food in the pouch (1) for food is filled in the inner space (30) and may stay there.
In such an event, the first exhaust unit (100) may act as a vapor exhaust passage. That is, when the pressure of vapor generated in the inner space (30) reaches a predetermined range or more, the vapor may be self-discharged to the outside of the inner space (30) through the first exhaust unit (100).
Accordingly, when the vapor pressure in the inner space (30) reaches a certain level, the vapor is exhausted through the first exhaust unit (100), so that the sheet (10) can be prevented from being unintentionally ruptured.
In the pouch (1) for food according to an embodiment of the present disclosure, the vapor pressure in the inner space (30) can be constantly maintained during a cooking process using a microwave oven. That is, since the pressure of vapor generated in the heating process using a microwave oven can be kept constant, the temperature and quality of the product are constant, and heating can be performed quickly. In addition, the steam is maintained inside the pouch (1) for food during the heating process, so that the product does not dry out, and moisture can be maintained.
In addition, since the moisture and pressure in the inner space (30) are maintained relatively high, steamed cooking can be performed. Accordingly, the texture of the heated food can be further enhanced.
In addition, the pouch (1) for food according to an embodiment of the present disclosure is provided with a second exhaust unit (200) at a position adjacent to the perforated line (40) and to a side of the pouch (1) for food. As the second exhaust unit (200) is positioned adjacent to the perforated line (40) and to a side of the pouch (1) for food, the vapor pressure applied to the perforated line (40) and around the perforated line (40) may be maintained relatively low as compared with the vapor pressure at other locations. Accordingly, it is possible to more effectively prevent the perforated line (40) from being unintentionally broken during a cooking process using a microwave oven. In addition, it is possible to prevent the vapor pressure from being concentrated on the central region and to maintain an overall uniform temperature and pressure in the inner space (30).
Although the preferred embodiments have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above. Rather, various modifications may be made by a person of ordinary skill in the art without departing from the gist of the present disclosure as claimed in the claims. Further, such modifications should not be individually understood from the technical idea or prospect of the present disclosure.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 17400476 | Aug 2021 | US |
| Child | 19012779 | US |
