KR102327436B1 - Safty air tight container - Google Patents

Abstract

According to the present invention, by allowing a vacuum negative pressure to act on the inside of a container body before an article such as food is accommodated therein and a cutout part is cut, a lid and the container body are in a sealed form before a consumer purchases such that food preservation can be improved by preventing consumers from easily opening lids of packaging containers displayed on the store shelves. In addition to allowing users to easily open the lid for the first time after the cutout part is cut, a sealing type safety packaging container of the present invention has an improved structure such that the opening and closing function of the lid can be performed even after a part of the lid is cut off for the first opening. The sealing type safety packaging container includes: a container body (100); a lid (200); and an opening means (300).

Description

Sealed Safety Packaging Container {SAFTY AIR TIGHT CONTAINER}

The present invention relates to a sealed safety packaging container, and in particular, a form in which the lid and the container body are sealed before the consumer purchases by allowing negative vacuum pressure to act on the inside of the container body before items such as food are stored therein and the cutout is cut. Food preservation can be improved by preventing the consumer from easily opening the lid of the packaging container displayed on the shelf of the store. It relates to an airtight safety packaging container whose structure is improved so that the lid can be opened and closed even after a part of it is cut off.

In general, when foods such as fruits or vegetables are stored for a long time in a packaged state, the internal air and the external air do not pass through, so that freshness is deteriorated, and there is even a risk of deterioration of the food.

In addition, in this case, since it is impossible to directly observe the state of the food in the packaged state, consumers often purchase spoiled food.

On the other hand, to solve the above problems, recently, packaging containers made of a transparent synthetic resin film have been developed and distributed and sold in the market so that the state of packaged food can be visually identified without opening the packaging paper. the current situation.

In the packaging container of the synthetic resin material, one side of the main body and the lid is connected by a connection part, so that the main body and the lid are not separated. A separate fastening part is provided.

Here, the main body, the lid, and the connecting part are integrally manufactured using synthetic resin, and since this synthetic resin has elasticity, it has a property of returning to its original shape by elasticity before an external force exceeding a critical value acts.

Since this feature is formed on one side of the main body and the lid, and can also occur in the connection part connecting the main body and the lid, if the lid is not completely fastened to the main body through the fastening part, it is separated from the main body and the main body is in an open state. In severe cases, the lid may be fully retracted.

On the other hand, if the above-mentioned condition occurs in the packaging container placed on the display stand, it may lower the purchase motivation of consumers, and may cause undesirable hygienic conditions.

Moreover, in the case of a bulky packaging container or a packaging container in which a thicker synthetic resin is used for packaging heavier food, since the elastic force of the connection part is further strengthened, the possibility of occurrence of the above-mentioned problems increases. have

As the prior art related to the existing packaging container, as disclosed in Korean Patent Publication No. 10-1162291 "Packaging container" (registration date: 2012.06.27), a body member for accommodating food; a lid member for covering the open top surface of the body member; and a plate-shaped connecting member having four sides, wherein the connecting member has two opposite sides of the four sides connected to the body connecting portion and the lid member, respectively, and a surface formed by the two sides is folded to have two corners, and each of the two corners has a plurality of corners forming an acute angle and an obtuse angle folded parallel to the two opposite sides.

However, in the case of food packaging containers displayed in store shelves, there is a risk that consumers open the lid to check the product and touch the food in the container to contaminate or damage the food. Safe packaging is required.

Conventionally, the film and the container body are joined by heat-treating the upper flange wing surface of the container only with the film, or the inside of the packaging container is sealed under vacuum to prevent the lid from being easily opened. It is difficult to open the product after purchase, and when the packaging container is closed, vacuum negative pressure acts inside, so it is difficult for the patient or the elderly to open the container lid.

As another prior art related to the conventional sealed packaging container, as disclosed in Korean Utility Model Publication No. 20-0282213 "Closed packaging container lid opening structure" (registration date: 2002.07.05), sealed safety made of synthetic resin material In composing the lid opening structure provided at the periphery of the packaging container lid, left and right handles are symmetrically provided on the left and right sides of the fixed handle, respectively, centering on the fixed handle provided on one side of the periphery of the lid, and the left and right The handle and the fixed handle are connected to each other with a cut-out groove for easy cutting, and a cut-out groove is formed in the corner between the upper periphery and the horizontal end of the lid. It has a structure in which a cut-out groove is not formed between the upper periphery and the transverse end of the .

However, in the case of the conventional cylindrical sealed packaging container, it is easy to open along the perforation line, but it is not suitable for the opening and closing structure of the container and the lid having a rectangular rim, and there is a disadvantage that molding is not easy.

Korean Patent Publication No. 10-1162291 "Packaging container" (Registration date: 2012.06.27) Korean Utility Model Publication No. 20-0282213 "Structure of the lid open part of a sealed safe packaging container" (Registration date: 2002.07.05)

The present invention was created in consideration of the above-mentioned problems, and its purpose is to allow vacuum negative pressure to act on the inside of the container body before items such as food are stored therein and the cutouts are cut, so that before the consumer purchases The lid and container body are configured in a sealed form, so that consumers cannot easily open the lid of the packaging container displayed on the store shelf, thereby improving food preservation. An object of the present invention is to provide a closed safe packaging container having an improved structure.

Another object of the present invention is to provide a closed safety packaging container whose structure is improved so that the opening and closing function of the lid can be performed even after a part of the lid is cut off for initial opening.

The present invention for achieving the above object has a storage space, the upper side is opened, the first flange is formed on the upper edge of the opened container body is coupled to the lid; a lid which is closely coupled to open and close the upper portion of the container body and has a second flange corresponding to the first flange formed on an edge portion thereof; and an opening means formed so that a part of the second flange of the lid is cut off;

The opening means is formed so that the second flange has four sides, and includes first and second handles protruding outwardly on both left and right sides of the second flange, and one of the first and second handles, It is composed of a cutout formed so that it can be cut using a perforation line to which three of the sides are connected,
A stepped support jaw is formed on the inner side of the container body, a convex portion protruding vertically upward is formed on the support jaw, and a fixed jaw that is seated on the upper side of the support jaw when the container body and the lid are combined is the lid of the lid. It is formed to be stepped on the lower side, and a concave groove-shaped groove is formed so that the convex portion is fitted and coupled to the fixed jaw, so that the convex portion is coupled to the concave portion in the concave manner when the container body and the lid are coupled. do.

The opening means corresponds to a first waveform part formed so that the peaks and valleys are curved in a continuous waveform on one side of the cut-out part, and the first waveform part on one side of the first flange at a position corresponding to the first waveform part Further comprising a second waveform portion in the form of a shape to be formed, the horizontal length of the second waveform portion is formed to be longer than the horizontal length of the first waveform portion, so that when the cutout portion is cut, the valley portion of the second waveform portion and the second A ventilation passage is formed between the lower surfaces of the flanges.

The lower portion of the second waveform portion is formed in an arc shape.

The manufacturing process of the container body and the lid includes: a protrusion protruding upwardly at each upper corner of the vacuum forming mold in which the undercut forming is performed, and having fitting holes formed on surfaces facing each other toward each corner; They are respectively disposed to be interposed between the protrusions, and are rotatably provided so as to be turned outward around a hinge pin fitted into the fitting hole when the container body and the lid are demolded, and a protrusion for undercut molding on the inside protrudes toward the concave groove. turned cover; and a return means for returning the rotating cover, which is rotated during demolding of the container body and the lid, to the original position after the demolding of the container body and the lid is completed.

According to the present invention, by forming a cut-out part including one of the first and second handles in which three of the four sides of the second flange of the lid can be cut along the perforation line, when the packaging container is displayed on a store shelf, the perforation is cut off Before the lid is opened, it is possible to visually check the sealing state before opening, so that the food safety can be trusted by the consumer. It has the useful advantage of being able to easily first open the lid from the container body as the condition is released.

In addition, in the present invention, since the lid is sealed to the container body in a vacuum negative pressure state before the cutout is cut, it is impossible to contaminate or damage the food contained in the packaging container displayed on the display stand of the store, so that the storage of goods such as food is improved. have the advantage of being improved.

The present invention forms a first corrugated portion in a cutout and forms a second corrugated portion longer than the horizontal length of the first corrugated portion in the first flange, so that the lower surface of the second flange and the It is possible to form a ventilation flow path between the valleys of the second corrugated portion, and has an advantage in that the vacuum negative pressure in the storage space can be easily released by introducing outside air into the storage space through the ventilation flow passage.

In addition, the present invention can manufacture the lid and the container body using a vacuum molding mold having a rotary cover that can rotate and restore to facilitate demolding with the undercut molding part, so that the lid and the container body, which are packaging containers, are manufactured. In the process, the demolding operation with the mold is smoothly performed and has the advantage of improving the efficiency of the manufacturing process.

1 is a perspective view showing the configuration of a sealed safety packaging container according to the present invention.
Figure 2 is a bottom perspective view of Figure 1;
Figure 3 is a plan view of the present invention lid.
Figure 4 is a cross-sectional view showing the coupling state of the present invention lid and the container body.
Figure 5 is a state diagram showing the separation state of the lid and the cut-out of the present invention.
Figure 6a is an exploded perspective view showing a modified example of the present invention opening means.
Figure 6b is a cross-sectional view showing that the ventilation flow path is formed between the second corrugated portion and the first flange after the cut-out portion in Figure 6a.
7 and 8 are a perspective view showing a mold for vacuum molding from which the packaging container of the present invention is manufactured, and a state diagram of the use of the mold for vacuum molding.

In describing the present invention, if it is determined that a detailed description of a related known technology or configuration may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted. And the terms to be described later are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of the user. Therefore, the definition should be made based on the content throughout this specification. In addition, 'including' a certain component means that other components may be further included, rather than excluding other components, unless otherwise stated.

The packaging container 10 of the present invention is roughly divided into a container body 100 and a lid 200 .

The sealed safety packaging container according to the present invention is described with reference to FIGS. 1 to 8 , has a storage space 110 , an upper side is opened, a first flange 120 is formed at an edge of the opened upper side, and a lid 200 . ) and the container body 100 in which the vacuum negative pressure acts in the storage space 110 when combined; a lid 200 that is closely coupled to open and close the upper portion of the container body 100 and has a second flange 220 corresponding to the first flange 120 formed at an edge portion thereof; An opening means 300 formed so that a part of the second flange 220 of the lid 200 is cut off to supply external air into the receiving space 110 of the container body 100 to release the vacuum negative pressure state; and the opening means 300 is formed so that the second flange 220 has four sides, and first and second handles 310 and 320 protruding outwardly on both left and right sides of the second flange 220 and , which includes one of the first and second handles 310 and 320 and includes a cutout 330 formed to be cutable using a perforated line 335 to which three of the four sides are connected.

1 and 2, the container body 100 has a rectangular cross-sectional structure in which the first flange 120 extending along the rectangular upper rim is formed.

The lid 200 is formed with a second flange 220 having a quadrangular cross-sectional structure consisting of four sides in the same manner as the first flange 120, and a first handle 310 on the left side of the second flange 220. protrudes outward, and the second handle 320 on the right side of the second flange 220 has a structure in which it protrudes outward.

As shown in FIGS. 3 and 4, the lid 200 has a fixing protrusion 210 protruding upward in the center, and the fixing protrusion 210 is a storage space 110 of the container body 100. It becomes a space in which an upper part of an article such as food wound inside is stored.

1 and 2, the combination of the container body 100 and the lid 200 is a stepped support jaw 115 is formed on the inner side of the container body 100, the support jaw 115 ) is formed with a convex portion 130 protruding vertically upward, and a fixing jaw 225 that is seated on the upper side of the support jaw 115 when the container body 100 and the lid 200 are combined is the lid 200 . ) is formed to be stepped on the lower side of the fixed jaw 225 and the concave groove portion 230 in the form of a concave groove is formed so that the convex portion 130 is fitted and coupled to the fixing jaw 225, so that the container body 100 and the lid 200 are formed. It has a structure in which the convex portion 130 is coupled in a fitting manner in the concave portion 230 during coupling.

Referring to FIG. 6A , the opening means 300 includes a first corrugated portion 340 formed so that one side of the cut-out portion 330 is curved in a continuous waveform with mountains and valleys, and the first corrugated portion 340 . A second waveform portion 350 having a shape corresponding to the first waveform portion 340 is further provided on one side of the first flange 120 at a position corresponding to The horizontal length L2 of the second wavy part 350 is longer than the length L1 (L1<L2).

That is, as the second wave form part 350 is formed to have a longer length than the first wave form part 340 , before the cut-out part 330 is cut from the second flange 220 , the first and second wave parts 340 and 350 . ) can be closely coupled to each other in the form of concavities and convexities to maintain the vacuum state of the accommodation space 110 , but as shown in FIG. After being separated from the 220, the outside air is supplied to the inside of the accommodation space (110).

For this reason, after the cut-out portion 330 is cut to separate the cut-out portion 330 from the second flange 220 , as shown in FIG. 6b , external air flows into the accommodation space 110 . A ventilation flow path 355 through which external air can be introduced is formed between the valley portion of the second corrugated portion 350 and the lower surface of the first flange 120 so as to be supplied and the vacuum state is released.

As shown in FIG. 6B , the vent flow path 355 formed after the first wavy part 340 is cut off has a lower surface of the second flange 220 having a flat upper portion, and a lower portion is provided. The second corrugated portion 350 of the first flange 120 having a concave trough shape is configured, so that the lower portion has a structure formed in an arc shape.

The manufacturing process of the container body 100 and the lid 200 of the present invention having such a configuration is for vacuum forming in which the undercut molding of the first and second flanges 120 and 220 is performed, respectively, as shown in FIGS. 7 and 8 . a protrusion 450 protruding upwardly at each upper corner of the mold 400 and having fitting holes 452 formed on surfaces facing each other toward each corner; They are respectively disposed to be interposed between the protrusions 450 , and are rotatably provided so as to be turned to the outside about the hinge pin 505 fitted in the fitting hole 452 during demolding of the packaging container 10 , and the inner side In the undercut molding protrusion 550, the concave groove portion 405 is projected toward the rotating cover (500); and a return means 600 for returning the rotating cover 500, which is rotated during demolding of the packaging container, to its original position after the demolding of the packaging container is completed.

As shown in FIG. 8, each of the rotary covers 500 has a container body 100 and a lid 200 that are demolded upward by demolding pressure when the container body 100 and the lid 200 are demolded. It is rotated so as not to interfere with the undercut molding protrusion 550 of the mold located in the mold to be bent outward, respectively.

For this reason, as shown in FIG. 8 during the bending operation of the rotary cover 500, the undercut forming part 15 of the container body 100 and the lid 200 is a protrusion for undercut molding of the rotary cover 500 ( As separated from the 550), the container body 100 and the lid 200 can be easily demolded without interference between the undercut forming part 15 of the mold and the undercut forming protrusion 550.

At this time, the return spring 650 is extended so that the length becomes longer during the rotation operation of the rotation cover 500 .

After the demolding operation of the container body 100 and the lid 200 is completed, the demolding pressure is removed and the return spring 650 is contracted. return to the original position by the restoring force of

Accordingly, the return means 600 of the present invention performs repeated vacuum forming operations of the container body 100 and the lid 200 by returning the rotary cover 500 to the original position after the demolding operation is completed. be able to do

The return means 300 for returning to the original position during the folding operation of the rotary cover 500 includes a first support hole 610 formed to be perforated up and down on each side edge of the vacuum forming mold 400 and , a second support hole 620 formed in a position corresponding to the first support hole 610 in a vertical line and perforated above and below each rotation cover 500, and the vacuum forming mold 400 A first support groove 630 formed to be concave on the bottom surface and elongated in the horizontal direction to communicate with the lower end of the first support hole 610 , and a concave shape formed to be concave on the upper surface of the rotary cover 500 and the second support groove 630 . A second support groove 640 elongated in the horizontal direction to communicate with the upper end of the ball 620, a return spring 650 coupled to be accommodated in the first support hole 610, and the return spring 650 The upper connection bar 660 coupled to the upper end and accommodated in the second support groove 640 , and the lower connection bar 670 coupled to the lower end of the return spring 650 and accommodated in the first support groove 630 . ) is composed of

The return means 600 is provided to be rotatable so that the rotating cover 500 is tilted upward, and uses the restoring force of the restoring spring 650 to enable repeated molding operations.

The first and second wavy portions 340 and 350 are also formed by the undercut forming protrusion 550 .

In addition, the assembly operation of the container body 100 and the lid 200 of the present invention is performed after accommodating items such as food in the storage space 110 of the container body 100, and then the lid 200 is removed from the container body 100. When the second flange 220 is closely coupled to the upper side of the first flange 120 as well as in close contact from the upper side to the lower side, the vacuum negative pressure state is maintained in the storage space 110 of the container body 100. do.

In order to separate the container body 100 and the lid 200 from the first and second handles 310 and 320, when the first handle 310 connected to the cutout 330 is pulled while gripping the first handle 310, the cutout 330 ) is separated from the second flange 220 based on the perforated line 335, and a gap is generated between the first and second flanges 120 and 220 at the portion where the cut-out 330 is separated, so that the outside air is the gap. It is introduced into the interior of the storage space 110 through the release of the vacuum negative pressure in the storage space 110, so that the lid 200 is easily opened from the container body (100).

When the container body 100 and the lid 200 are normally closed, vacuum negative pressure is applied in the storage space 110 so that the coupling state of the lid 200 and the container body 100 is firmly maintained, After the initial opening and closing state of the lid 200 is released, as the vacuum negative pressure state in the storage space 110 is released, the opening and closing operation of the lid 200 with respect to the container body 100 is performed smoothly.

When the user grips and pulls the second handle 320 not included in the cut-out 330 during the initial opening operation of the lid 200 , the lid 200 is easily opened from the container body 100 and , thereafter, in the state in which the vacuum negative pressure state is released, the opening and closing operation of the lid 200 is performed smoothly.

On the other hand, when the second wavy part 350 is formed in the first flange 120 and the first corrugated part 340 is formed in the cut-out 330 , the cut-out 330 is cut off the perforated line 335 . ), the air passage 355 between the first and second flanges 120 and 220 is formed to form an air passage through which outside air can be introduced into the receiving space 110 .

Since the ventilation passage 355 is composed of the lower surface of the second flange 220 of the cut-out portion and the second corrugated portion 350 of the first flange 120, the valley of the second corrugated portion 350 is formed. As the difference in height between the portion and the lower surface of the second flange 220 becomes a passage through which outside air is introduced, the vacuum negative pressure state in the storage space 110 is converted to atmospheric pressure so that the opening operation of the lid 200 is smooth. function to make it happen.

Therefore, in the present invention, three of the four sides of the second flange 220 of the lid 200 are connected and the cutout 330 including one of the first and second handles 310 and 320 is cut along the perforation line 335 . By forming it so that it is possible, when the packaging container 10 is displayed on the shelf of the store, it is possible to visually check the sealing state of the lid 200 before the cut-out 330 is cut, so that consumers can trust food safety, , during the cutting operation of the cut-out portion 330 for the first opening, the vacuum negative pressure state in the storage space 110 is released due to the gap formed between the first and second flanges 120 and 220, and the lid 200 is removed from the container body 100 ) has the useful advantage that it can be easily first opened from

In addition, in the present invention, since the lid 200 is sealed to the container body 100 in a vacuum negative pressure state before the cut-out 330 is cut, the food contained in the packaging container 10 displayed on the shelf of the store is contaminated. It cannot be damaged or damaged, so it has the advantage of improving the storage of food and the like.

In the present invention, the first wavy part 340 is formed in the cutout 330 , and the second wavy part has a length longer than the horizontal length L1 of the first corrugated part 340 in the first flange 120 . By forming 350, it is possible to form a ventilation passage 355 between the lower surface of the second flange 220 and the valley of the second corrugated portion 350 during the cutting operation of the cut-out portion 330, , has the advantage of being able to easily release the vacuum negative pressure in the accommodation space 110 by introducing outside air into the accommodation space 110 through the ventilation flow path 355 .

And the present invention is to manufacture the lid 200 and the container body 100 by using a mold 400 for vacuum molding having a rotary cover 500 that can rotate and restore operation to facilitate demolding with the undercut molding part. Therefore, in the manufacturing process of the container body 100 and the lid 200, which are packaging containers, the demolding operation with the mold is performed smoothly and has the advantage of improving the efficiency of the manufacturing process.

As such, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be defined by the claims and equivalents as well as the claims to be described later.

That is, the present invention described as described above is not limited to the specific preferred embodiments described above, and anyone with ordinary skill in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims Of course, various modifications are possible, and such modifications are within the scope of the claims.

10: packaging container 100: container body
110: storage space 115: support jaw
120: first flange 130: iron part
200: lid 210: fixing protrusion
220: second flange 230: groove
300: opening means 310: first handle
320: second handle 330: cutout
335: perforated line 340: first waveform part
350: second waveform part 355: ventilation flow path
400: mold for vacuum forming 405: concave groove
450: protrusion 452: fitting hole
500: rotation cover 505: hinge pin
550: protrusion for undercut molding 600: return means
610,620: first and second support holes 630,640: first and second support grooves
650: return spring 660,670: upper and lower connecting bar

Claims (4)

a container body 100 having a storage space 110 and an upper opening, a first flange 120 is formed on an edge of the opened upper side, and coupled to the lid 200;
a lid 200 that is closely coupled to open and close the upper portion of the container body 100 and has a second flange 220 corresponding to the first flange 120 formed at an edge portion thereof;
and an opening means 300 formed so that a part of the second flange 220 of the lid 200 is cut off;
The opening means 300 is formed so that the second flange 220 has four sides, the first and second handles 310 and 320 protruding outwardly on both left and right sides of the second flange 220, and the It includes one of the first and second handles 310 and 320 and consists of a cutout 330 formed so as to be cutable using a perforated line 335 to which three of the four sides are connected,
A stepped support jaw 115 is formed on the inner side of the container body 100 , and a convex part 130 protruding vertically upwardly on the support jaw 115 is formed, and the container body 100 and the lid 200 are formed. ), a fixed jaw 225 seated on the upper side of the support jaw 115 is formed to be stepped on the lower side of the lid 200 , and the convex part 130 is fitted to the fixed jaw 225 and coupled A concave groove-shaped recess 230 is formed so that when the container body 100 and the lid 200 are coupled, the convex part 130 is coupled to the recessed part 230 in a fitting manner. Sealed safe packaging container. The method according to claim 1,
The opening means 300 includes a first corrugated portion 340 formed to be curved in a continuous waveform with mountains and valleys on one side of the cut-out portion 330,
A second waveform portion 350 having a shape corresponding to the first waveform portion 340 is further provided on one side of the first flange 120 at a position corresponding to the first waveform portion 340,
The horizontal length L2 of the second waveform portion 350 is longer than the horizontal length L1 of the first waveform portion 340 , so that when the cut-out portion 330 is cut, the second waveform A sealed safety packaging container, characterized in that the ventilation flow path (355) is formed between the valley portion of the portion (350) and the lower surface of the second flange (220). 3. The method according to claim 2,
The second corrugated portion 350 is a sealed safety packaging container, characterized in that the lower portion is formed in an arc shape. The method according to claim 1,
In the manufacturing process of the container body 100 and the lid 200, each upper corner of the vacuum forming mold 400 in which the undercut forming is performed protrudes upwardly, and the fitting hole ( 452) is formed with a protrusion 450;
They are respectively disposed to be interposed between the protrusions 450 , and rotate to be turned to the outside around the hinge pin 505 fitted in the fitting hole 452 when the container body 100 and the lid 200 are demolded. The rotation cover 500 is provided as possible and the undercut molding protrusion 550 protrudes toward the concave groove portion 405 on the inside; and
Return means (600) for returning the rotating cover (500), which is rotated during demolding of the container body (100) and the lid (200), to the original position after the demolding of the container body (100) and the lid (200) is completed. A sealed safe packaging container, characterized in that it is molded by a vacuum molding mold 400 consisting of.

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