KR20230167498A - Vapor discharge container with a pointed end in a sealing projection - Google Patents

Abstract

In the present invention, after filling the contents, sealing the lead film and heating the sealed product in a microwave oven, the pressure inside the container increases due to steam generated by heating the moisture in the contents, and the lead film is heated by the increase in internal pressure. This relates to a steam discharge container having a narrow seal width and a structure in which the seal on the upper surface of the vapor discharge portion including the tip and the space inside the non-contact flange can be selectively separated when the expansion exceeds a certain pressure. In addition, in the present invention, when the lead film is contracted after the steam inside the container is discharged, the first auxiliary protrusion, or the first auxiliary protrusion and the second auxiliary protrusion support like a pillar, so that the lead film accommodates the container body in the space inside the non-contact flange. It relates to a vapor discharge container having a structure that prevents negative pressure from being applied inside the container by partially sealing the container again by reattaching the lead film to the side that communicates with the space or the side that communicates with the outside of the container in the space outside the non-contact flange. .

Description

Vapor discharge container with a pointed end in a sealing projection}

The present invention relates to a vapor release container, and particularly to a vapor release container capable of microwave cooking and used for food packaging.

Simple cooking foods are processed foods that can be easily cooked in a short period of time and are made to be convenient for storage, transportation, and carrying. Sealed packaging containers that seal the container containing the contents with a lead film made of flexible material are widely used.

However, as shown above, while the sealed packaging container is heated in a microwave oven or immediately after cooking, the pressure inside the container increases due to steam generated by heating the moisture in the contents, causing the lead film to expand, causing the lead film to momentarily rupture or occur. There is a risk that a weak part of the seal may burst and the contents may scatter, which may contaminate the microwave or cause burns to the user.

As a way to prevent this, before heating the contents, part of the lead film sealed in the packaging container is peeled off or holes are drilled in part of the lead film in advance to allow steam to escape to the outside of the container during heating. This process is quite extensive. Not only is it cumbersome and inconvenient, but if excessive moisture evaporates from the contents, especially food, there is a risk that the taste, texture, and flavor may deteriorate.

Korean Patent No. 1391841 uses an auxiliary sealing protrusion on the flange surface of the edge of the container in addition to the sealing protrusion formed along the flange surface of the container to form a discharge space, and a vapor discharge hole is formed in the discharge space, so that the lead film expands and creates an auxiliary seal. The sealing of the protrusion was first separated to allow steam to be discharged through the steam discharge hole in the discharge space. However, when the lead film is expanded by heating, steam is discharged through the steam discharge hole, but when heating is stopped immediately after cooking, the lead film shrinks and comes into close contact with the steam discharge hole as well as the discharge space or auxiliary sealing protrusion again, causing external air to enter. As the vapor was unable to flow in, negative pressure was applied inside the container and the container was distorted and deformed, and there was also a problem that the risk of burns still remained due to some of the vapor that could not escape.

In addition, Korean Patent Publication No. 2017-0150312 separates the outer and inner adhesive protrusions along the flange of the container and forms a steam discharge hole between them, so that if any part of the inner adhesive protrusions is separated by expansion of the lead film, steam It was made to be discharged through the discharge hole. However, if the inner adhesive protrusion far from the steam discharge hole is separated, the steam discharge efficiency is reduced, and the spaced width of the inner adhesive protrusion and the outer adhesive protrusion must match the width of the flange portion, so it cannot be widened as desired, and the width must be narrow. In this case, the problem of the lead film shrinking immediately after cooking and the separated inner adhesive protrusions and the lead film coming into contact again, blocking the steam exhaust hole still occurred.

Korean Patent No. 1391841 Korean Patent Publication No. 2017-0150312

The purpose of the present invention is to heat the moisture in the contents while heating it in a microwave oven in a sealed state, thereby increasing the internal pressure of the container due to steam generated, causing the lid film to expand and allowing the steam to be discharged through a vapor outlet formed at a certain position in the container. This lowers the risk of the contents scattering, and also prevents the lead film and the vapor discharge part from coming into close contact again even if the lead film shrinks after steam is discharged, so negative pressure is not applied inside the container, preventing distortion of the container and reducing the risk of burns to the user. The purpose is to provide a vapor discharge container that can be further lowered.

The present invention for achieving the above object includes a container body 100 having an open upper side to form a storage space;

A flange portion 200 extending horizontally to the upper edge of the container body 100;

A sealing protrusion 300 protruding at a certain height and a certain width (D) around the upper surface of the flange part 200;

The flange portion 200 is connected to the sealing protrusion 300 around the upper surface to form a closed curve, has the same height as the sealing protrusion 300, and has a width narrower than the width D of the sealing protrusion 300. The formed steam discharge protrusion 410 and the upper surface of the flange portion 200 are used as the floor, the side of the steam discharge protrusion 410 is used as one side, and the inside of the non-contact flange communicates with the storage space of the container body on the other side. A vapor discharge portion 400 including a space portion 420;

The steam discharge protrusion 410 includes a width reducing protrusion 411 that is reduced from the width D of the sealing protrusion 300 to a predetermined width d, and the other side of the sealing protrusion 300 of the width reducing protrusion 411. It relates to a vapor discharge container (10) extending from the end and having a tip portion (413) formed toward the inside or outside of the container when viewed in plan.

It may further include a width maintaining protrusion 412 maintained at a predetermined width d between the width reducing protrusion 411 and the tip portion 413.

The width retaining protrusion 412 may have an arc shape when viewed in plan.

The tip 413 may be formed toward the inside of the container when viewed in plan.

The width-reducing protrusion 411 may have an outer surface extending parallel to the flange portion 200 when viewed in plan, and an inner surface whose width may decrease as it approaches the outer surface toward the tip 413.

The outer surface of the width reduction protrusion 411 extends to the tip 413 while drawing an arc, and the inner surface of the width reduction protrusion 411 draws an arc of relatively greater curvature than the arc of the outer surface. It may extend to the tip 413.

The outer surface of the width reduction protrusion 411 extends to the tip 413 while drawing an arc, and the inner surface of the width reduction protrusion 411 draws an arc with a relatively smaller curvature than the arc of the outer surface. It may extend to the tip 413.

The tip 413 may be formed at an angle of 45° to 90° when viewed from a plan view.

The tip portion 413 may be in contact with the inner circumference of the upper surface of the flange portion or may protrude into the inside of the container when viewed in plan.

The tip portion 413 may protrude 0.5 to 3 mm from the inner circumference of the upper surface of the flange portion 200 toward the inside of the container when viewed in plan.

The width D of the sealing protrusion 300 may be 4 to 12 mm.

The width (d) of the steam discharge protrusion 410 may be 1 to 3 mm.

More than one vapor discharge unit 410 may be installed.

Two steam discharge units 410 may be installed.

A first auxiliary protrusion 421 may be formed on the side of the non-contact flange inner space 420 that communicates with the receiving space of the container body 100 at a height equal to or lower than that of the steam discharge protrusion 410. there is.

The height of the first auxiliary protrusion 421 may be 40 to 90 when the height of the steam discharge protrusion 410 is 100.

The steam discharge portion 400 has the upper surface of the flange portion 200 as the floor, the side of the steam discharge protrusion 410 as one side, and a non-contact flange outer space portion 430 that communicates with the outside of the container on the other side. It may further include.

A second auxiliary protrusion 431 may be formed on the side that communicates with the outside of the non-contact flange outer space 430.

The height of the second auxiliary protrusion 431 may be 60 to 140 when the height of the steam discharge protrusion 410 is 100.

The first auxiliary protrusion 421 or the second auxiliary protrusion 431 is narrow in width and long when the direction parallel to the flange portion 200 is defined as the longitudinal direction and the direction perpendicular to the flange portion 200 is defined as the width direction when viewed in plan. It may have a long shape.

The first auxiliary protrusion 421 may have a length of 5 to 10 mm and a width of 1 to 3 mm.

The second auxiliary protrusion 431 may have a length of 2 to 6 mm and a width of 0.5 to 2 mm.

The container body 100 may be circular, oval, square, rectangular, hexagonal, or octagonal when viewed in plan.

In the vapor discharge container of the present invention, after filling the contents, the lid film is sealed, and while the sealed product is heated in a microwave oven, the internal pressure of the container increases due to the steam generated by heating the moisture in the contents, and the internal pressure rises. When the lead film expands and exceeds a certain pressure, the sealing width is narrow and has a structure in which the sealing on the upper surface of the vapor discharge part, including the tip and the space inside the non-contact flange, can be selectively separated first.

In addition, in the vapor discharge container of the present invention, when the lead film is contracted after the vapor inside the container is discharged, the first auxiliary protrusion, or the first auxiliary protrusion and the second auxiliary protrusion support like a pillar, so that the lead film is held in the space inside the non-contact flange. The lead film is reattached to the side that communicates with the receiving space of the container body or the outside of the container in the outer space of the non-contact flange to partially seal the container again, preventing negative pressure from being applied inside the container.

1 is a perspective view of a vapor discharge container according to an embodiment of the present invention.
Figure 2 is a plan view of the vapor discharge container of Figure 1.
Figure 3a is an enlarged view of the vapor discharge portion of the vapor discharge container of Figure 1.
Figure 3b is an enlarged view of the steam discharge portion of the steam discharge container according to another embodiment of the present invention in which the width retention protrusion and the shape of the space inside the non-contact flange are changed from the steam discharge portion of Fig. 3a.
Figure 3c shows that the steam discharge part of Figure 3a extends to the tip while drawing an arc on the outer surface of the width reducing protrusion without the width retaining protrusion, and the inner surface of the width reducing protrusion is an arc of relatively greater curvature than the arc of the outer surface. This is an enlarged view of the steam discharge portion of a steam discharge container according to another embodiment of the present invention, where the tip extends to the tip and is formed inside the container while drawing, and the tip is in contact with the inner circumference of the upper surface of the flange portion.
FIG. 3D is an enlarged view of the vapor discharge portion of a vapor discharge container according to another embodiment of the present invention, in which a tip is formed on the outside of the container, contrary to the vapor discharge portion of FIG. 3A, and the tip is in contact with the outer circumference of the upper surface of the flange portion.
Figure 4a is an enlarged view of the steam discharge portion of the perspective view of another embodiment of the present invention in which the first auxiliary protrusion and the second auxiliary protrusion are formed in the vapor discharge container of Fig. 1.
Figure 4b is an enlarged plan view of the vapor discharge part of Figure 4a.
Figure 5a shows that when the contents are filled in the vapor discharge container of the present invention, the lead film is sealed, and the sealed product is heated in a microwave oven, the pressure inside the container increases due to steam generated by heating the moisture in the contents, causing the lead film to deteriorate. This is a conceptual diagram showing expansion.
FIG. 5B is a conceptual diagram showing how the sealing of the vapor discharge portion is separated and steam is discharged when the microwave heating continues for a certain period of time in FIG. 5a and the internal pressure of the vapor discharge container exceeds a certain pressure.
Figures 6a to 6c show changes in the vapor discharge portion and the lead film when the product in a sealed state is heated in a microwave oven by filling the contents in the vapor discharge container of the present invention and sealing the lead film; A' cross-sectional view, Figure 6a is a cross-sectional view before heating in a microwave oven, Figure 6b is a cross-sectional view in a state in which only the seal of the first auxiliary protrusion is separated while the lead film expands due to heating in a microwave oven, and Figure 6c is a cross-sectional view showing a state in which only the seal of the first auxiliary protrusion is separated after heating in a microwave oven. This is a cross-sectional view showing the deformed state of the steam discharge portion of the container body after the internal pressure of the steam discharge container exceeds a certain pressure for a certain period of time, the sealing of the vapor discharge portion is separated, and steam is discharged.
Figure 7 is a perspective view of a vapor discharge container according to another embodiment of the present invention in which a sealing reinforcement consisting of a sealing reinforcement protrusion and a side wall reinforcement part and a reinforcement pattern are formed on the side wall of the container.

The present invention will be described in detail below with reference to the drawings.

Figures 1 and 2 show a perspective view and a plan view of a vapor discharge container according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the present invention includes a container body 100 whose upper side is open to form a storage space;

A flange portion 200 extending horizontally to the upper edge of the container body 100;

A sealing protrusion 300 protruding at a certain height and a certain width (D) around the upper surface of the flange part 200;

The flange portion 200 is connected to the sealing protrusion 300 around the upper surface to form a closed curve, has the same height as the sealing protrusion 300, and has a width narrower than the width D of the sealing protrusion 300. The formed steam discharge protrusion 410 and the upper surface of the flange portion 200 are used as the floor, the side of the steam discharge protrusion 410 is used as one side, and the inside of the non-contact flange communicates with the storage space of the container body on the other side. A vapor discharge portion 400 including a space portion 420;

The steam discharge protrusion 410 includes a width reducing protrusion 411 that is reduced from the width D of the sealing protrusion 300 to a predetermined width d, and the other side of the sealing protrusion 300 of the width reducing protrusion 411. It relates to a vapor discharge container (10) extending from the end and having a tip portion (413) formed toward the inside or outside of the container when viewed in plan.

There is no need to specifically limit the material of the vapor discharge container 10 as long as it can exhibit a level of strength that is not easily damaged even when containing the contents 70, but plastic with excellent productivity and sealing properties is preferable. In addition to polyolefin resins such as polyethylene and polypropylene, polyester resins, polyamide resins, polystyrene-based resins, polyvinyl chloride resins, polyacrylonitrile resins, etc. may be used as the plastic. Among them, polypropylene is preferable because it has excellent moldability, strength, and heat seal performance. When heat resistance is required for the vapor discharge container 10, polypropylene mixed with an inorganic filler such as talc can be used.

The contents 70 are not particularly limited, but are suitable for those that require sealing to maintain quality, such as food. Among them, foods that contain a certain amount of moisture and generate steam when heated are preferable.

Foods that generate steam by heating include cooked grain processed foods such as rice or noodles, sauces included with grain processed foods, or meat or vegetable dishes included with them, especially when heated in a microwave oven. It is preferable to accommodate foods for cooking in a microwave oven, and foods for frozen or refrigerated preservation of these foods are preferable. Among them, foods for cooking in a microwave oven that are frozen are more desirable because the movement of water vapor can be controlled to ensure uniform heating by latent heat generated when water vapor condenses.

The vapor discharge container 10 including the container body 100, the flange portion 200, the sealing protrusion 300, and the vapor discharge portion 400 is integrally molded, and the molding method does not need to be particularly limited, Vacuum forming, injection molding, or sheet thermoforming may be used.

There is no need to specifically limit the thickness of the vapor discharge container 10 including the container body 100, the flange portion 200, the sealing protrusion 300, and the vapor discharge portion 400, but if it is too thin, the container 10 ), the strength cannot be sufficiently secured, and there is a risk that the container 10 may be greatly deformed when the internal pressure of the container 10 increases. For this reason, the container thickness is usually 0.2 mm or more, preferably 0.3 mm or more, and more preferably 0.4 mm or more. If the container thickness is too thick, a large amount of material for the container 10 is required, thereby increasing the manufacturing cost of the container 10. For this reason, the container thickness is usually 1.5 mm or less, preferably 1.2 mm or less, more preferably 1.0 mm or less, and even more preferably 0.8 mm or less.

The sealing protrusion 300 and the vapor discharge portion 400 are both installed on the upper surface of the flange portion 200, and the sealing protrusion 300 and the vapor discharge protrusion 410 of the vapor discharge portion 400 are at the same height. is connected to form a closed curve around the flange portion 200, and the upper surface of the sealing protrusion 300 and the vapor discharge protrusion 410 and the lower surface of the lid film 60 are sealed to seal the container.

The material of the lid film 60 does not need to be particularly limited as long as it is a flexible material that can be bonded to the sealing protrusion 300 and the vapor discharge protrusion 410 of the vapor discharge container 10 and can expand to a certain degree. The material of the vapor discharge container 10 may be the same or may be different.

There is no need to specifically limit the size and shape of the lead film 60 as long as it covers the entire flange portion 200 of the container body 100, but is larger than the outer circumference of the flange portion 200. It is preferable to form a protrusion that is at least 1 to 5 mm larger, and to form a protrusion that protrudes further than the outer circumference of the flange portion 200 to facilitate separation of the lead film 60 in at least one area.

Adhesives may be used to bond the lid film 60, the sealing protrusion 300, and the vapor discharge protrusion 410, but when considering productivity and hygiene, heat sealing is used to bond the lead film 60 to the sealing protrusion 300 and the vapor discharge protrusion 410. It is desirable. There is no need to specifically limit the sealing strength of the lead film, but it is bonded with a sealing strength that allows it to be easily removed by hand immediately after heating in a microwave oven, etc., but can be easily removed by hand when frozen or at room temperature. It is desirable to bond them with a sealing strength that cannot be easily removed.

The steam discharge portion 400 has a steam discharge protrusion 410 whose width is narrower than the width D of the sealing protrusion 300, and the upper surface of the flange portion 200 as the floor, and the vapor discharge protrusion The side surface of (410) is one side, and includes a non-contact flange inner space portion 420 that communicates with the storage space of the container body on the other side.

In addition, the steam discharge protrusion 410 includes a width reducing protrusion 411 that is reduced from the width D of the sealing protrusion 300 to a predetermined width d and a sealing protrusion 300 of the width reducing protrusion 411. It extends from the other end to form a tip 413 toward the inside or outside of the container when viewed in plan.

The width (D) of the sealing protrusion 300 is constant along the circumference of the flange portion 200, and the width of the vapor discharge portion 400 is formed to be narrower than the width (D) of the sealing protrusion 300. When the pressure inside the container increases after sealing the film 60, the sealing of the vapor discharge portion 400 can be separated first.

The width (D) of the sealing protrusion 300 is 4 to 15 mm, preferably 6 to 12 mm, more preferably 8 to 10 mm, and the vapor discharge protrusion 410 and the width maintaining protrusion 412 are The width d is 0.5 to 3 mm, preferably 1 to 3.5 mm, more preferably 1.5 to 2.5 mm. In addition, the width (D) of the sealing protrusion 300 divided by the width (d) of the steam discharge protrusion 410 and the width retaining protrusion 412 (D/d) is 2 to 10, preferably 3 to 3. 9, more preferably 4 to 8, even more preferably 5 to 7.

In the present invention, the absolute difference in the width (D) of the sealing protrusion 300 is increased, and the width (D) of the sealing protrusion 300 is increased compared to the width (d) of the steam discharge protrusion 410 and the width retaining protrusion 412. By increasing the relative difference, the possibility of defects in which the seal of the vapor discharge part 400 is not separated first when the pressure inside the container rises due to incomplete or partial sealing of the sealing protrusion 300, which can occur in mass production, is reduced. can be significantly lowered.

However, when the width (D) of the sealing protrusion 300 is lowered below a certain level, the width (D) of the sealing protrusion 300 is compared to the width (d) of the steam discharge protrusion 410 and the width retaining protrusion 412. It is difficult to make the relative difference large.

Additionally, if the width d of the steam discharge protrusion 410 and the width retention protrusion 412 is lowered below a certain level, the possibility of incomplete sealing or incomplete sealing may increase.

The height of the sealing protrusion 300 and the vapor discharge protrusion 410 is 0.5 to 4 mm, preferably 1 to 3 mm, and more preferably 1.5 to 2.5 mm. If the height is too low, the height difference between the steam discharge protrusion 410 and the non-contact flange inner space 420 is reduced, so in the sealing process, not only the vapor discharge protrusion 410 but also a portion of the non-contact flange inner space 420, In particular, defects may occur in the sealing of the side that communicates with the storage space of the container body 100, and when the pressure inside the container increases due to the unintended sealing of the side that communicates with the storage space of the container body 100, steam This may prevent the seal near the discharge portion 400 from being separated first.

In addition to the absolute difference and relative difference between the width (D) of the sealing protrusion 300 and the width (d) of the steam discharge protrusion 410, the steam discharge portion 400 of the present invention is structurally formed with a tip portion 413. As a result, when the pressure inside the container increases, the sealing of the vapor discharge part 400 can be separated first.

Since the sealing protrusion 300 and the vapor discharge protrusion 410 form a closed curve around the flange portion 200, as shown in FIG. 3C, for one vapor discharge portion 400, the sealing protrusion 300, The width reduction protrusion 411, the tip 413, the width reduction protrusion 411, and the sealing protrusion 300 are sequentially connected, and if necessary, a predetermined distance is provided between the width reduction protrusion 411 and the tip 413. A width retaining protrusion 412 maintained at the width d may be further included.

When the steam discharge protrusion 410 is further provided with a width retaining protrusion 412, a sealing protrusion 300 and a width reducing protrusion 411 are used for one steam discharge portion 400, as shown in FIGS. 3A, 3B and 3D. ), the width maintaining protrusion 412, the tip 413, the width maintaining protrusion 412, the width reducing protrusion 411, and the sealing protrusion 300 may be sequentially connected.

The width retaining protrusion 412 may have an arc shape when viewed from the top, as shown in FIGS. 3A and 3D, or may have a shape in which a straight line and an arc are connected, as shown in FIG. 3B. The curvature of the arc can be adjusted depending on the width of the flange portion 200, the angle of the tip portion 413, the width of the width retaining protrusion 412, etc.

The sharp portion of the tip 413 may be formed toward the inside of the container as shown in FIGS. 3A, 3B, and 3C when viewed in plan, or may be formed toward the outside of the container as shown in FIG. 3D. When the pressure inside the container increases, the lead film 60 expands and the lead film 60 on the top of the non-contact flange inner space 420 also expands, and a tip 413 is formed toward the inside of the container as shown in Figure 5a. If possible, pressure is applied from both sides to separate the seal of the tip 413 by expansion of the lead film 60 on the top of the non-contact flange inner space 420 located on both sides of the tip 413, so that it is directed to the inside of the container. It is desirable to form a sharp portion of the tip portion 413.

When the tip portion 413 is formed toward the inside of the container, as shown in FIGS. 3A, 3B, and 3C, the width-reducing protrusion 411 has an outer surface extending parallel to the flange portion 200 when viewed in plan, and an inner surface. The width of the side surface decreases as it approaches the outer surface toward the tip 413, allowing non-contact flange inner space 420 to be formed on both sides of the tip 413.

When the tip 413 is formed toward the outside of the container, as shown in FIG. 3D, the width-reducing protrusion 411 has an inner surface extending parallel to the flange portion 200 when viewed in plan, and an outer surface extending parallel to the tip 413. ), the width decreases as it approaches the outer surface, and a non-contact flange inner space 420 is formed inside the container of the tip 413.

As shown in Figure 3c, the outer surface of the width reduction protrusion 411 without the width retaining protrusion 412 extends to the tip 413 while drawing a circular arc, and the inner surface of the width reduction protrusion 411 is the outer surface of the width reduction protrusion 411. The vapor discharge protrusion 410 may be formed by drawing an arc with a relatively larger curvature than the circular arc and extending to the tip 413 so that the tip 413 faces the inside of the container. In FIG. 3C, the width decreasing protrusion 411 gradually decreases from the width D of the sealing protrusion 300 through d1 to d2.

In addition, although not separately shown in the drawing, the outer surface of the width reducing protrusion 411 extends to the tip 413 while drawing an arc, and the inner surface of the width reducing protrusion 411 is relatively larger than the circular arc of the outer surface. The vapor discharge protrusion 410 may be formed to extend to the tip 413 while drawing an arc of small curvature, with the tip 413 facing the outside of the container.

The tip 413 may be formed at an angle (θ) of 45° to 90°, preferably 50° to 80°, and more preferably 55° to 70° when viewed in plan.

If the angle θ is too large, the lead film 60 on the top of the non-contact flange inner space 420 expands when heated on both sides of the tip 413, and the pressure acting toward the tip 413 increases. ) may not be fully used to separate the sealing, and if the angle (θ) is too small, the tip portion 413 is not formed sharply during the molding process and is rather molded to be thick, thereby damaging the sealing of the tip portion 413. This can make separation difficult.

If the sealed area of the upper surface of the tip 413 is expanded while forming the tip 413 sharply as shown above, when the sealed area of the upper surface of the tip 413 is increased, the tip as shown in Figure 4a The sealing area of the upper surface of the tip portion 413 can be reduced by forming a tip end inclined portion 4131 by slanting the sharp end of the upper surface of the portion 413 toward the inside of the container.

The tip portion 413 may be in contact with the inner circumference of the upper surface of the flange portion or protrude into the inside of the container when viewed in plan, and when it protrudes into the inside of the container as shown in FIGS. 3A and 3B, the flange portion 200 ) It may protrude from the inner circumference of the upper surface to the inside of the container by 0.5 to 3 mm, preferably 1 to 2.5 mm (h in FIGS. 3A and 3B).

When the tip 413 protrudes by a certain length (h), the lead film 60 on the upper part of the non-contact flange inner space 420 expands by heating as shown in FIG. 5A and acts toward the tip 413. Pressure may be more advantageous in separating the seal of the tip portion 413.

If the protrusion length (h) is too long, it is inconvenient to mold the container 10, and rigidity is provided to the side of the container body 100 where the steam discharge portion 400 is formed, so that the steam discharge portion 400 is caused by steam when the steam is discharged. By suppressing deformation, vapor discharge may not be smooth, and when sealing the lead film 60, the sealing width may be exceeded by a conventional sealing device, resulting in incomplete sealing or a problem of having to change the sealing device. It can happen.

One or more steam discharge portions 410 may be installed on the upper surface of the flange portion 200 of the steam discharge container 10, preferably 1 to 4, and more preferably 2. When two steam discharge units 410 are installed, they may be installed opposite to each other in the steam discharge container 10.

The container body 100 may be circular, oval, square, rectangular, hexagonal, or octagonal when viewed in plan. When the container body 100 is square, rectangular, hexagonal, or octagonal, the corner portions preferably have a curved shape with a predetermined curvature.

Even if the material and thickness of the vapor discharge container 10 are the same, the container side wall 110 is formed by the shape of the container body 100, the reinforcement pattern 111, the side wall reinforcement 520, or a combination thereof, as shown in FIG. 7. Intensity may vary. The vapor discharge unit 410 of the present invention may be installed on either side as long as the strength of the container side wall 110 is not different for each side wall, but the strength of the container side wall is determined by the shape of the container body 100 and the reinforcement pattern 111. ), side wall reinforcement 520, or a combination thereof, it is preferable to install it on the relatively weak side.

When the steam discharge container 10 is installed on the weaker side of the container side wall 110, steam is discharged to the steam discharge portion 400 for more than a certain period of time as shown in FIG. 5b, and the steam discharge portion 400 and the container side wall below it Even if thermal deformation occurs in (110) and the pressure inside the container decreases after the steam is discharged for a certain period of time, deformation of the steam discharge portion 400 and the container side wall 110, for example, mainly the upper surface of the steam discharge portion 400 Uneven bending deformation in the longitudinal or width direction of the flange portion 200 is not restored to its original state, so the inside and outside of the container may communicate between the deformed vapor discharge portion 400 and the lid film 60, so even after stopping heating, the inside of the container It is possible to prevent negative pressure from being applied (see Figure 6c).

As shown in FIGS. 4A and 4B, on the side of the non-contact flange inner space 420 that communicates with the receiving space of the container body 100, a first auxiliary protrusion is formed at a height equal to or lower than the steam discharge protrusion 410. 421) can be formed.

If the side of the non-contact flange inner space 420 of the vapor discharge part 400 that communicates with the storage space of the container body exceeds a certain length without the first auxiliary protrusion 421, the sealing device seals it at once. When the process is performed, a defect may occur in which the upper surface of the flange portion 200 on the side that communicates with the storage space of the container body 100 is sealed together with the lead film 60, and the unintended flange portion ( 200) When the pressure inside the container increases due to the sealing on the upper surface, the sealing near the vapor discharge part 400 may be prevented from being separated before the sealing protrusion 200.

In addition, after the lead film 60 is expanded by microwave heating in FIG. 6B, the microwave heating continues for a certain period of time in FIG. 6C, so that the internal pressure of the vapor discharge container 10 exceeds a certain pressure, causing the vapor discharge portion 400 )'s seal is separated and steam is discharged, and then the container body is deformed and the pressure inside the container is lowered, causing the lid film 60 to shrink again. At this time, if the first auxiliary protrusion 421 is not present in the vapor discharge portion 400, the lead film 60 is connected to the flange portion 200 on the side that communicates with the storage space of the container body in the non-contact flange inner space portion 420. As it comes into contact with the upper surface of the container, the container is partially sealed again and a negative pressure is applied inside the container.

However, when the first auxiliary protrusion 421 is formed as shown in FIG. 6C, even if the lead film 60 is contracted, the first auxiliary protrusion 421 supports the lead film 60 like a pillar, so that both sides of the first auxiliary protrusion 421 By allowing the inside and outside of the container to communicate, it is possible to block negative pressure from being applied inside the container.

The height of the first auxiliary protrusion 421 may be the same as or lower than that of the steam discharge protrusion 410, and when the height of the steam discharge protrusion 410 is 100, the height of the first auxiliary protrusion 421 The height may be 40 to 90, preferably 50 to 85, and more preferably 60 to 80.

The sealing area of the upper surface of the first auxiliary protrusion 421 is relatively narrower than the sealing area of the upper surface of the steam discharge protrusion 410, and the non-contact flange inner space 420 accommodates the container body 100. Since it is formed on the side communicating with the space, if the first auxiliary protrusion 421 is formed at the same height as the vapor discharge protrusion 410 or exceeds the upper limit of the height range, the sealing process may be performed at once in the sealing device. When the sealing strength of the first auxiliary protrusion 421 tends to be relatively higher than the sealing strength of the vapor discharge protrusion 410, in this case, the lead film ( If 60) expands, it may prevent the sealing of the first auxiliary protrusion 421 from being separated before the steam discharge protrusion 410.

In addition, even if the height of the first auxiliary protrusion 421 is relatively lower than the height of the vapor discharge protrusion 410, the first auxiliary protrusion 421 is partially sealed to the lead film 60 or is not sealed to the lead film 60. When 60 is expanded and then contracted, there is no problem in the first auxiliary protrusion 421 performing the function of supporting the lead film 60 like a pillar.

However, when the height of the first auxiliary protrusion 421 is lowered below a certain level, the height difference with the upper surface of the flange portion 200 is low even if the first auxiliary protrusion 421 supports the lead film 60 like a pillar. The non-contact flange inner space portion 420 may come into contact with the upper surface of the flange portion 200 on the side that communicates with the storage space of the container body, and the container may be partially sealed again, allowing negative pressure to be applied inside the container. You can.

There is no need to specifically limit the shape of the first auxiliary protrusion 421, such as circular, oval, square, or rectangular when viewed in plan, but on the side that communicates with the storage space of the container body at the non-contact flange inner space 420. In performing the role of a pillar, when the direction parallel to the flange portion 200 is set as the longitudinal direction and the direction perpendicular to the flange portion 200 is set as the width direction so that one to two first auxiliary protrusions 421 are sufficient to perform the function, the width It may have a narrow, long shape.

The first auxiliary protrusion 421 may have a length of 5 to 10 mm, preferably 6 to 8 mm, and a width of 1 to 3 mm, preferably 1.5 to 2.5 mm. In addition, the first auxiliary protrusion 421 installed on the side communicating with the storage space of the container body in the non-contact flange inner space 420 has a length of 5 to 20 mm on the side communicating with the storage space of the container body, preferably Install it so that it is 6 to 15 mm. For example, one first auxiliary protrusion 421 is sufficient for the non-contact flange inner space 420 of FIG. 3A as shown in FIGS. 4A and 4B, and the length of the non-contact flange inner space 420 as shown in FIG. 3B is If it is long, two first auxiliary protrusions 421 may be installed.

When the first auxiliary protrusion 421 is installed in the non-contact flange inner space 420 of FIG. 3A, the non-contact flange inner space 420 is wider at the tip 413 and has a reduced width protrusion 411. Since the starting point of the first auxiliary protrusion 421 is formed narrowly, when the length of the non-contact flange inner space 420 from the tip 413 to the starting point of the width-reducing protrusion 411 is 100, the tip portion 421 It is formed at positions 20 to 50, preferably 30 to 40, with a bias toward the (413) side.

The steam discharge portion 400 has the upper surface of the flange portion 200 as the floor, the side of the steam discharge protrusion 410 as one side, and a non-contact flange outer space portion 430 that communicates with the outside of the container on the other side. It may further include.

If the length of the side of the non-contact flange outer space portion 430 that communicates with the outside of the container is a predetermined length, for example, 15 mm or more, the sealing of the vapor discharge portion 400 is separated by heating in a microwave oven and steam is discharged, and then the lead film As (60) shrinks again, the lead film (60) comes into contact with the side of the non-contact flange outer space portion (430) that communicates with the outside of the container, thereby partially sealing the container again, causing negative pressure to be applied inside the container.

When the second auxiliary protrusion 431 is formed on the side of the non-contact flange outer space 430 that communicates with the outside of the container, the second auxiliary protrusion 431 supports the lead pillar 60 like a pillar, so that the second auxiliary protrusion 431 (431) By allowing the inside and outside of the container to communicate on both sides, negative pressure inside the container can be prevented (see Figure 6c).

The height of the second auxiliary protrusion 431 may be 60 to 140, preferably 70 to 130, and more preferably 80 to 120, assuming that the height of the steam discharge protrusion 410 is 100.

The second auxiliary protrusion 431 is formed on the side of the non-contact flange outer space 430 that communicates with the outside of the container, so that when the sealing process is performed at once in the sealing device, the flange portion 200 moves toward the outside of the container. There is a possibility that structurally flexible height changes may occur as the temperature increases, so the sealing strength of the second auxiliary protrusion 421 tends to be relatively lower than that of the steam discharge protrusion 410.

Therefore, if the height of the second auxiliary protrusion 431 is too low, it cannot function as a pillar supporting the lead film 60 on the side communicating with the outside of the container, and if the height is too high, it cannot perform the role of a pillar when the sealing process is performed at once. 2 The auxiliary protrusion 431 may protrude too much, making the sealing too strong.

The second auxiliary protrusion 431 does not need to be particularly limited in shape, such as circular, oval, square, or rectangular when viewed in plan, but serves as a pillar on the side communicating with the outside of the container in the non-contact flange outer space 430. To perform this, when the direction parallel to the flange portion 200 is determined as the longitudinal direction and the direction perpendicular to the flange portion 200 is determined as the width direction, the shape may be narrow and long.

The length of the second auxiliary protrusion 421 is 2 to 6 mm, preferably 1.5 to 5.5 mm, more preferably 2 to 5 mm, and the width is 0.5 to 2 mm, preferably 1 to 1.5 mm. You can. In addition, the second auxiliary protrusion 431 installed on the side communicating with the outside of the container in the non-contact flange outer space 430 has a length of 5 to 12 mm, preferably 6 to 10 mm, on the side communicating with the storage space of the container body. Install it so that it becomes mm.

When the second auxiliary protrusion 431 is installed in the non-contact flange outer space 430 as shown in FIGS. 4A and 4B, it is installed in the center of the side communicating with the outside of the non-contact flange outer space 430.

Meanwhile, the embodiments of the present invention disclosed in the specification and drawings are merely provided as specific examples to easily explain the technical content of the present invention and to facilitate understanding of the present invention, and are not intended to limit the scope of the present invention. It is obvious to those skilled in the art that in addition to the embodiments disclosed herein, other modifications based on the technical idea of the present invention can be implemented.

10: Steam discharge container
100: container body 110: container side wall
111: Reinforcement pattern
200: Flange part
300: Sealing protrusion
400: Steam discharge unit
410: Steam discharge protrusion 411: Width reduction protrusion
412: Big breast protrusion 413: Cutting edge
4131: Apical distal slope
420: Non-contact flange inner space 421: First auxiliary protrusion
430: Non-contact flange outer space 431: Second auxiliary protrusion
500: Sealing reinforcement part 510: Sealing reinforcement protrusion
520: Side wall reinforcement
60: Lead film
70: Contents

Claims (23)

A container body whose upper side is open to form a storage space;
a flange portion extending horizontally to the upper edge of the container body;
A sealing protrusion protruding at a certain height and a certain width around the upper surface of the flange portion;
A steam discharge protrusion is connected to the sealing protrusion around the upper surface of the flange portion to form a closed curve, is at the same height as the sealing protrusion, and has a width narrower than the width of the sealing protrusion, and the upper surface of the flange portion is connected to the floor. and a steam discharge portion that has a side of the steam discharge protrusion on one side and includes a non-contact flange inner space portion that communicates with the storage space of the container body on the other side;
The steam discharge protrusion is a width-reducing protrusion that is reduced from the width of the sealing protrusion to a predetermined width and extends from the other end of the sealing protrusion of the width-reducing protrusion, and has a tip formed in the inner or outer direction of the container when viewed in plan. A vapor discharge container.
The vapor discharge container according to claim 1, further comprising a width retaining protrusion maintained at a predetermined width between the width reducing protrusion and the tip portion.
The vapor discharge container according to claim 2, wherein the width retaining protrusion has an arc shape when viewed in plan.
The vapor discharge container according to claims 1 to 3, wherein the tip is formed toward the inside of the container when viewed in plan.
The vapor discharge container according to claim 4, wherein the outer surface of the width-reducing protrusion extends parallel to the flange portion when viewed in plan, and the width of the inner surface decreases as it approaches the outer surface toward the tip.
The method of claim 1, wherein the outer surface of the width-reducing protrusion extends to the tip while drawing a circular arc, and the inner surface of the width-reducing protrusion extends to the tip while drawing an arc of curvature relatively greater than the arc of the outer surface. A vapor discharge container characterized in that it extends.
The method of claim 1, wherein the outer surface of the width-reducing protrusion extends to the tip while drawing a circular arc, and the inner surface of the width-reducing protrusion extends to the tip while drawing an arc of curvature relatively smaller than the arc of the outer surface. A vapor discharge container characterized in that it extends.
The vapor discharge container according to claim 1, wherein the tip is formed at an angle of 45° to 90° when viewed from a plan view.
The vapor discharge container according to claim 1, wherein the tip contacts the inner circumference of the upper surface of the flange portion or protrudes into the inside of the container when viewed in plan.
The vapor discharge container according to claim 9, wherein the tip protrudes 0.5 to 3 mm inside the container from the inner circumference of the upper surface of the flange portion when viewed in plan.
The vapor discharge container according to claim 1, wherein the sealing protrusion has a width of 4 to 12 mm.
The vapor discharge container according to claim 1, wherein the width of the vapor discharge protrusion is 1 to 3 mm.
The vapor discharge container according to claim 1, wherein one or more vapor discharge units are installed.
The steam discharge container according to claim 13, wherein two steam discharge units are installed.
The vapor discharge container according to claim 1, wherein a first auxiliary protrusion is formed on a side of the non-contact flange inner space portion that communicates with the receiving space of the container body, with a height equal to or lower than that of the vapor discharge protrusion.
The steam discharge container according to claim 15, wherein the height of the first auxiliary protrusion is 40 to 90 when the height of the steam discharge protrusion is 100.
The method of claim 1, wherein the steam discharge part has the upper surface of the flange portion 200 as the bottom, the side of the steam discharge protrusion as one side, and further includes a non-contact outer space portion of the flange that communicates with the outside of the container on the other side. Characterized by a vapor discharge container.
The vapor discharge container according to claim 17, wherein a second auxiliary protrusion is formed on a side of the non-contact flange outer space communicating with the outside.
The steam discharge container according to claim 18, wherein the height of the second auxiliary protrusion is 60 to 140 when the height of the steam discharge protrusion is 100.
The method according to any one of claims 15 to 19, wherein when the first auxiliary protrusion or the second auxiliary protrusion is viewed in plan, a direction parallel to the flange portion is defined as the longitudinal direction, and a direction perpendicular to the flange portion is defined as the width direction, A vapor discharge container characterized by a narrow and long shape.
The vapor discharge container according to claim 20, wherein the first auxiliary protrusion has a length of 5 to 10 mm and a width of 1 to 3 mm.
The vapor discharge container according to claim 20, wherein the second auxiliary protrusion has a length of 2 to 6 mm and a width of 0.5 to 2 mm.
The vapor discharge container according to claim 1, wherein the container body has a circular, oval, square, rectangular, hexagonal or octagonal shape when viewed in plan.

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