TW202241769A - Bag container with detachable opening closure member and sealing apparatus for easy detachment and assembly, convenient cleaning, and having excellent sealing performance with simple structure - Google Patents

Abstract

The present invention provides a bag container with detachable opening closure member and sealing apparatus, which includes a container body with an openable top portion, an opening closure member for closing the opened top portion, and a sealing apparatus. The sealing apparatus may be detachably mounted on the top portion of the container body for detachably forming a sealed connection of the opening closure member with the opened top portion of the container body. The present invention may provide the advantages of simple structure, easy detachment and assembly, convenient cleaning, and having excellent sealing performance.

Description

Bag-type container with removable opening closure and sealing device

The present invention relates to a bag container. More particularly, it relates to a pouch container having an opening closure and sealing device removably sealingly engaged with the container body, the removable opening closure and sealing device providing easy access to the contents of the container and convenient While cleaning, the sealing performance of the bag container is ensured.

Bag containers with sealing mechanisms, such as sealed bags, are known in the art. Prior art airtight bags are usually made in a semi-closed form with an open top that can be reclosed. The reclosable top typically includes a pair of interlockably fastened sealing elements to form a closure. The interlocking fastening sealing elements can have various shapes, such as interlocking protrusion and groove elements that match each other. These sealing elements are fixedly formed on the top of the sealed bag, and due to the difference in material and the difference in design, they have various problems, such as poor durability, not suitable for repeated use, easy to be broken, and the air seal cannot be restored when the bag is opened and closed again, And sealed bags with fixed sealing elements are not easy to clean, etc.

In view of this, there is a need for a novel reclosable bag-type container, which can ensure the sealing effect of the bag-type container during use by providing a detachable opening closure and sealing element, and can improve the operation and ease of use of the bag-type container and structural durability.

In order to solve the above-mentioned problems in the prior art, the present invention provides a novel bag-type container, which improves the sealing performance through the design of the detachable opening closure and the addition of a sealing device that matches the container body, and is easy to disassemble and assemble at the same time. The operation is simple and convenient, and it is suitable for repeated cleaning.

The present invention provides a bag container with an opening closure comprising: a container body having an open top with an opening and having an interior compartment sized to hold a volume of contents; an opening closure connected to the open top of the container body for closing the opening of the open top, and Sealing means couplable with said opening closure, said sealing means being detachably mounted on the open top of said container body, by which said opening closure is detachably connected to said container The open top of the body forms a sealed connection.

Preferably, the sealing device includes a top wall and a side wall extending downward from the top wall, the side wall surrounds and defines a hollow cavity, wherein the top wall and/or the side wall are configured into releasable sealing engagement with the top of the container body. The sealing device is provided with a first engagement member, and the open top of the container body forms a second engagement member engageable with the first engagement member; when the opening closure member is connected with the open top, The open top is pressed against and abuts against the sealing device, so that the first engagement member and the second engagement member are compressed and sealed. The sealing device is further provided with a third engaging member spaced apart from the first engaging member, and the open top of the container body forms a fourth engaging member engageable with the third engaging member; when the When the open top abuts against the sealing device, the third engaging element and the fourth engaging element are forced to be compressed and sealed.

In a preferred embodiment, the first engagement member is formed along the circumference of the side wall of the sealing device, and the second engagement member is formed along the circumference of the inner surface of the open top of the container body; when When the opening closure part is connected to the open top, the open top is pressed inwardly against the side wall of the sealing device, so that the first engaging part and the second engaging part are compressed and sealed. Preferably, the first engagement member and the second engagement member are formed as concavo-convex structural members interlocking with each other.

In order to strengthen the abutment between the open top of the container body and the side wall of the sealing device, thereby enhancing the sealing effect between the two, along the circumferential direction of the side wall of the sealing device and on the first engaging member The third engagement member is formed above the top of the container body, and the fourth engagement member is formed along the circumference of the inner surface of the open top of the container body; when the open top abuts against the side wall of the sealing device, forcing The third engaging element is compressed and sealed with the fourth engaging element. Preferably, the third engagement member and the fourth engagement member are formed as concavo-convex structural members interlocking with each other.

In a particular embodiment, said sealing means comprises an outlet tube extending upwardly from its top wall, and said outlet tubing is in communication with the internal compartment of said container body and protrudes beyond said opening closure. The bag container also includes a closure removably secured to the outlet tube. A sealing ring may also be provided between the cover and the outlet pipe.

Preferably, the top wall of the sealing means may have a flange, the lower surface of which is pressed against the top edge of the open top when the sealing means is connected to the open top.

Preferably, an interlockable fastening element is provided on the side wall of the opening closure and the open top, so that the two can be better fastened and locked. The interlockable fastening element may comprise one or more dimples provided on the inner surface of the side wall of the opening closure, and the positions corresponding to the dimples on the outer surface of the open top are One or more studs engageable with the recess are provided.

In another preferred embodiment, said sealing means comprises a shoulder connecting said side wall to said top wall, said first engagement member being arranged on said shoulder and formed as an upwardly facing annular groove ; the open top has an upper edge extending transversely with respect to the longitudinal axis of the bag container, the second engagement member being formed as an annular tooth extending downwardly from the lower surface of the upper edge; when the opening When a closure is connected to said open top, said open top is pressed downwardly by said open closure against said seal, positioning said downwardly extending annular teeth in said upwardly facing annular grooves inside to form a tight seal. The opening closure includes an annular reinforcement protruding downward from its bottom surface, wherein when the opening closure is connected to the open top, the annular reinforcement is elastically deformed and pressed against the upper edge of the open top to form a close engagement between said upwardly facing annular groove and said downwardly extending annular teeth.

In order to better fix the sealing device, the inner surface of the open top of the container body includes an inwardly extending support portion, and the support portion, the upper edge and the side wall of the open top define a receiving space for the sealing device. Advantageously, the third engagement member is arranged on the side wall of the sealing device and is formed as a lateral annular groove, and a lateral annular tooth is provided between the upper edge of the open top and the supporting portion; when the When the open top abuts against the sealing device, the lateral annular tooth system is positioned in the lateral annular groove to form a compression seal, so as to further enhance the sealing effect between the two.

In some cases, the closure is made to include an upper cover portion and a collar which, when secured to the outlet pipe, acts on the opening closure so that the opening closure is compressed against the opening closure. said open top so as to form a close engagement between said upwardly facing annular groove and downwardly extending annular teeth. The inside of the upper cover part may be provided with an annular receiving part for engaging with the upper part of the outlet pipe.

According to the invention, said sealing means and said opening closure are preferably made of a material comprising polypropylene (PP, Polypropylene).

The container body, the sealing device and the opening closure of the bag container according to the present invention are preferably manufactured by integral molding.

According to a preferred embodiment of the bag-type container of the present invention, the container body of the bag-type container is made of a material containing silicone or rubber. Silicone is a non-toxic, high temperature, low temperature resistant and easy to mold polymer material. Bag containers made of silicone or rubber are suitable for food storage.

The height and volume of the container body can be changed according to different requirements, and such changes will not limit the specific structures and functions described in the present invention.

The thickness of the container body is the wall thickness of the bag container, and can be appropriately selected depending on the volume of the container. When the volume is large, the wall of the container can be made thicker so that the container will not break due to the excessive weight of the contents.

One of the main points of the present invention is that by providing structural features that can be disassembled relative to each other in the container body, sealing device and opening closure, a simple and practical container with good sealing performance, easy access to the contents of the container and convenient cleaning is realized. Reusable bag container.

The following embodiments will further illustrate the present invention with reference to the accompanying drawings.

While the invention has been illustrated and described in terms of preferred embodiments, the bag container can be manufactured in many different configurations, sizes, and materials.

Exemplary embodiments of the bag-type container with an opening closure of the present invention will be described below with reference to the accompanying drawings. It should be understood that the dimensions of various parts in the drawings are not drawn to scale, and are only for schematic illustration, and do not represent the actual dimensions of the product of the present invention.

Referring to Figures 1 to 6, there is shown a bag container 1 constructed in accordance with a first preferred embodiment of the present invention. As shown in FIGS. 1A and 1B , a bag-type container 1 comprises a container body 10 having an open top 11 with an opening and having an internal compartment sized to hold a volume of contents. The container body 10 of this embodiment is integrally molded and has a substantially rectangular outer shape. In this embodiment, the open top 11 is designed to be slightly inclined inwards, so as to facilitate the press fitting of the open top 11 during assembly. A lower annular protrusion 12 and an upper annular protrusion 13 parallel to each other are formed protruding along the circumferential direction of the inner surface of the open top 11 .

The bag container 1 also comprises an opening closure 20 and a sealing device 30 . The opening closing member 20 is connected to the open top 11 of the container body 10 for closing the opening of the open top 11 . The sealing device 30 is configured to be placed inside the opening closure 20 and coupled with the open top 11 .

3 and 4 clearly show the opening closure 20 and the sealing device 30 . As shown in the figure, the opening closure 20 is generally a cover body with an open bottom, including a cover plate 21 and a side wall 22 extending downward from the cover plate 21 , and the side wall 22 defines a receiving chamber 23 around it. The side wall 22 may include reinforcing ribs (not shown) projecting inwardly from its bottom edge, extending the entire perimeter of the side wall 22 to abut the open top 11 of the container body 10 . A through hole 24 is defined in the center of the cover plate 21 . An interlockable fastening element can be provided on the side wall 22 of the opening closure 20 and the open top 11, so that the two can be better fastened and locked. For example, one or more recesses (not shown) are provided on the inner surface of the side wall 22 of the opening closure 20, and one or more protrusions (not shown) are arranged on the outer surface of the open top 11 corresponding to the positions of the recesses ( not shown), the corresponding recesses are engaged with the studs.

As shown in FIGS. 2B and 5 , the entire sealing device 30 is substantially detachably accommodated in the receiving chamber 23 of the opening closure 20 . The sealing device 30 includes a top wall 31 and a side wall 32 extending downward and slightly outward from the lower surface of the top wall 31 , the side wall 32 surrounds and defines a hollow cavity extending downward and slightly outward from the top wall 31 33. The slightly outwardly extending side walls 32 match the shape and size of the slightly inwardly inclined open top 11 to achieve a press fit. The advantage of this inclined configuration is that the sealing device 30 can be further pressed when the open top 11 abuts against the sealing device 30, thereby enhancing the tightness of engagement between the two. After the sealing device 30 is fully accommodated in the receiving chamber 23 of the opening closure 20, a space is defined between the side wall 22 of the opening closure 20 and the side wall 32 of the sealing device 30 (see FIG. 2B ), and the open top 11 is clamped during assembly. Hold in the space, which will be described in detail below.

The sealing device 30 also includes an outlet tube 34 extending upwards from said top wall 31 , said outlet tube 34 being in communication with the inner compartment of said container body. The outlet tube 34 is sized to just pass through the through hole 24 of the opening closure 20 and protrude beyond said opening closure 20 . In this way, the sealing device 30 is coaxially and detachably arranged around the outlet pipe 34 . Protruding along the circumference of the outer surface of the side wall 32 forms a lower annular groove 35 and an upper annular groove 36 parallel to each other, the positioning, size and shape of the lower annular groove 35 and the upper annular groove 36 are determined. It is configured to match with the lower annular protrusion 12 and the upper annular protrusion 13 of the open top 11 of the container body 10 respectively, so as to achieve close engagement with each other. The top wall 31 of the sealing device 30 is provided with a flange 37 .

FIG. 6 shows an exploded perspective view of the bag container 1 which, as shown, also includes a cover 40 removably secured to the outlet tube 34 protruding beyond the opening closure 20 . The cover 40 can be clamped on the outlet pipe 34 or connected with the outlet pipe 34 through threads. A sealing ring 41 may be provided between the cover 40 and the outlet pipe 34 to strengthen the sealing connection between the two.

During use, the open top 11 of the container body 10 is sleeved on the side wall 32 of the sealing device 30, wherein the lower annular protrusion 12 and the upper annular protrusion 13 of the open top 11 are respectively connected to the lower ring of the side wall 32 of the sealing device 30. The annular groove 35 is engaged with the upper annular groove 36 , and the top edge of the open top 11 abuts against the lower surface of the flange 37 of the sealing device 30 . Then, the nested container body 10 and sealing device 30 are placed in the receiving chamber 23 of the opening closure 20, wherein the outlet pipe 34 passes through the through hole 24 of the opening closure 20 and protrudes beyond the opening closure. 20 , and the open top 11 of the container body 10 is clamped in the space defined between the side wall 22 of the opening closure 20 and the side wall 32 of the sealing device 30 . Specifically, the reinforcing rib provided on the bottom edge of the side wall 22 of the opening closure 20 presses inwardly against and abuts against the open top 11 of the container body 10, so that the lower annular protrusion 12 of the open top 11 is pressed against the sealing device The lower annular groove 35 of 30 forms a mating press-fit seal. Alternatively, the outer diameter of the portion of the lower portion of the open top 11 that is in contact with the opening closure 20 is designed to be slightly larger than the inner diameter of the side wall 22 of the corresponding opening closure 20, so that when the two are coupled, the open top 11 is pressed inwardly by the opening closure 20 and against the side wall 32 of the sealing means 30 so that the lower annular protrusion 12 of the open top 11 is pressed into matching compression engagement with the lower annular groove 35 of the sealing means 30 seal. As shown in Figure 5, the open top 11 of the container body 10 is completely covered by the sealing device 30 along the entire perimeter, the contents in the container body 10 will not leak out of the container, and the air outside the container will not easily penetrate Into the interior of the container, achieving an excellent sealing effect.

Furthermore, the flange 37 of the sealing device 30 also presses down against the top edge of the open top 11 such that the upper annular protrusion 13 of the open top 11 and the upper annular groove 36 of the sealing device 30 also form a compression seal. Providing such a compression seal on the top of the sealing device 30 and the open top 11 can not only further strengthen the sealing effect of the bag-type container 1, but also make the connection between the opening closure 20, the container body 10 and the sealing device 30 stronger .

7 to 10C show a bag container 100 according to a second embodiment of the present invention. The structure of this embodiment is basically the same as that of the first embodiment, including a container body 110 , an opening closure 120 , a sealing device 130 and a cover 140 .

The main difference between this embodiment and the first embodiment described above is that a different form of sealing mechanism is used. As shown, the container body 110 has an open top 111 with an opening having an upper edge 112 extending horizontally inwards with respect to the longitudinal axis X of the bag container. On the lower surface of the inner end of the upper edge 112 is provided an annular tooth 113 extending downward. The open top 111 also includes a supporting portion 114 protruding circumferentially from its lower inner surface, and lateral annular teeth 115 positioned between the upper edge 112 and the supporting portion 114, the supporting portion 114, the lateral The ring teeth 115 and said upper edge 112 are parallel to each other. A recess 116 is delimited by the inner surface of the side walls of the open top 111 , the lower surface of the upper edge 112 and the lateral annular teeth 115 .

The sealing device 130 in this embodiment is also configured to be placed inside the opening closure 120 and coupled with the open top 111 . The opening closure 120 is substantially an inverted T-shaped cover with an open bottom, including a cover 121 and a side wall 122 extending downward from the cover 121 , and the side wall 122 defines a receiving chamber 123 around it. The side wall 122 may include an annular stiffener 125 protruding downward from its bottom surface, which is elastically deformed and pressed against the upper edge 112 of the open top 111 when the opening closure 120 is pressed towards the open top 111 . A through hole 124 is defined in a center of the cover plate 121 .

The sealing device 130 includes a top wall 131, a side wall 132, and a shoulder 137 connecting the top wall 131 with the side wall 132, wherein the side wall 132 surrounds and defines a hollow cavity 133, and the shoulder 137 contains The annular groove 135 faces upwards. An outwardly facing lateral annular groove 136 is further provided on the side wall 132 of the sealing device 130 . The positioning, size and shape of the upwardly facing annular groove 135 and the lateral annular groove 136 are configured to match the downwardly extending annular teeth 113 and the lateral annular teeth 115 of the open top 111, respectively, so as to achieve close contact with each other. engage. The sealing device 130 is configured to be snapped just between the support portion 114 of the open top 111 and said upper edge 112 .

As shown in FIG. 9 , the top of the sealing device 130 is basically detachably accommodated in the receiving chamber 123 of the opening closure 120 , while the side wall 132 and the hollow cavity 133 defined therein are exposed in the receiving chamber 123 of the opening closure 120 outside. The sealing device 130 also includes an outlet tube 134 extending upwards from the top wall 131, the outlet tube 134 being in communication with the inner compartment of the container body. The outlet tube 134 is sized to just pass through the through hole 124 of the opening closure 120 and protrude beyond said opening closure 120 . In this way, the sealing device 130 is coaxially and detachably arranged around the outlet pipe 134 . The sealing device 30 is provided with a flange 138 between its shoulder 137 and the side wall 132 .

A cap 140 is detachably secured to the outlet tube 134 protruding beyond the opening closure 120 and includes an upper cap portion 141 , a collar 142 and a handle 143 . An annular receiving portion 144 is disposed inside the upper cover portion 141 , and the upper pipe wall of the outlet pipe 134 is engaged in the annular receiving portion 144 . The handle 143 is connected to the upper cover part 141, which is convenient for the user to carry. The collar 142 and the upper cover part 141 are two separate parts. The inside of the collar 142 is provided with an internal thread, which is screwed with the outlet pipe 134, and then the upper cover part 141 is clamped on the outlet pipe 134 and is located on the collar 142. Location. When the collar 142 is threaded onto the outlet tube 134 , it will apply downward pressure to the opening closure 120 , pressing the opening closure 120 against the open top 111 . The annular reinforcement 125 provided on the bottom face of the opening closure 120 is thus elastically deformed under pressure, pressing against said open top 111 so as to form a tight seal therebetween.

In use, the open top 111 of the container body 110 is sleeved on the side wall 132 of the sealing device 130, wherein the downwardly extending annular teeth 113 and the lateral annular teeth 115 of the open top 111 are respectively positioned on the facing surfaces of the sealing device 130 The flange 138 of the sealing device 130 is accommodated in the recess 116 of the open top 111 in the annular groove 135 and the lateral annular groove 136 and engaged with each other. Then, the container body 110 and the sealing device 130 nested together are placed in the receiving chamber 123 of the opening closure 120, wherein the outlet pipe 134 passes through the through hole 124 of the opening closure 120 and protrudes beyond the opening closure 120 , and the upper edge 112 of the open top 111 of the container body 10 is clamped horizontally between the bottom surface of the opening closure 120 and the shoulder 137 of the sealing device 130 . Specifically, the annular reinforcing member 125 provided on the bottom surface of the opening closure 120 is pressed against and abuts against the upper edge 112 of the open top 111 after the collar 142 is screwed with the outlet pipe 134, thereby making the open top 111 The downwardly extending annular teeth 113 of the top 111 are pressed to form a mating compression-engagement seal with the upwardly facing annular groove 135 of the sealing means 130 . As shown in Figure 9, the open top 111 of the container body 110 is completely covered by the sealing device 130 along the entire perimeter, the contents in the container body 110 will not leak out of the container, and the air outside the container will not easily penetrate Into the interior of the container, achieving an excellent sealing effect.

In addition, the lateral annular tooth 115 of the open top 111 also forms an engagement seal with the lateral annular groove 136 of the sealing device 130, so that not only the sealing effect of the bag container 100 can be further strengthened, but also the opening closure member 120, the container body 110 The connection with the sealing device 130 is stronger.

As mentioned above, one of the main points of the present invention is to design the three components of the bag container: the opening closure 20, 120, the container body 10, 110 and the sealing device 30, 130 to be separable from each other. The three components are allowed to be conveniently and simply assembled together by providing interfitting interlockable fastening elements which ensure that the assembled container remains hermetically closed.

The container body of the present invention is preferably a flexible container made of a flexible material. The flexible material may be a material containing silicone or rubber, which is a polymer material that is non-toxic, resistant to high and low temperatures, and easy to mold and process. Bag-type flexible containers made of silicone or rubber are suitable for food storage. Particularly preferably, the container body of the embodiments is molded from silicone or rubber.

The opening closure and sealing means of the present invention are preferably made of a hard plastic material. The hard plastic material can be made of a material containing polypropylene (PP, Polypropylene). Polypropylene is a semi-crystalline thermoplastic, which has the advantages of acid and alkali resistance, chemical resistance, impact resistance and high temperature resistance (-20°C~130°C). Because of its safe and stable chemical properties, polypropylene can not only be used to make food-grade containers, but also can be heated in a microwave oven. Furthermore, the choice of hard plastic material is beneficial to the clamping effect on the open top of the container body, ensuring the sealing effect of the container.

In addition, the height and volume of the container body can be changed according to different needs, and the wall thickness of the container body can be properly selected depending on the volume of the container. When the volume is large, the wall of the container can be made thicker so that the container will not break due to the excessive weight of the contents.

The bag container with removable opening closure of the present invention has been illustrated in detail above by describing exemplary embodiments. It should be understood that the scope of the present invention is not limited to the above-mentioned embodiments, but is defined by the appended claims. Various modifications can be made to the embodiments without departing from the object and spirit of the present invention, but they still fall within the scope of the present invention.

1: bag container 10: container body 11: Open top 12: (lower part) ring-shaped protrusion 13: (upper) ring-shaped protrusion 20: Opening closure 21: cover plate 22: (opening closure) side wall 23: Reception room 24: Through hole 30: Sealing device 31: (sealing device) top wall 32: (sealing device) side wall 33: Hollow cavity 34: Outlet pipe 35: (lower part) annular groove 36: (upper) annular groove 37: Flange 40: Capping 41: sealing ring 100: bag container 110: container body 111: open top 112: (open top) upper edge 113: ring tooth 114: support part 115: lateral annular tooth 116: notch 120: opening closure 121: cover plate 122: (opening closure) side wall 123: reception room 124: Through hole 125: ring reinforcement 130: sealing device 131: (sealing device) top wall 132: (sealing device) side wall 133: hollow cavity 134: Outlet pipe 135: Annular groove 136: Lateral annular groove 137: shoulder 138: Flange 140: capping 141: Upper cover 142: Collar 143: handle 144: Ring receiving part X: (longitudinal) axis

Figures 1A and 1B show perspective views, respectively, of a bag container according to a first embodiment of the present invention in closed and open states, without a closure. 2A and 2B correspond to cross-sectional views of the pouch container of FIGS. 1A and 1B , respectively. Fig. 3 is a front view of the sealing device shown in Figs. 1A and 1B. Fig. 4 is a perspective view of the sealing device and the opening closure shown in Figs. 1A and 1B separated from each other. Fig. 5 is an enlarged view of part A of Fig. 2A. Fig. 6 is an exploded perspective view of the bag container shown in Figs. 1A and 1B including the closure. Fig. 7 is an exploded perspective view of a bag container according to a second embodiment of the present invention. Fig. 8 is an exploded cross-sectional view of the bag container shown in Fig. 7 . Fig. 9 is a cross-sectional view of the bag container shown in Fig. 7 in a closed state. 10A to 10C show cross-sectional views of the opening closure, sealing means and container body of the bag container shown in FIG. 7, respectively.

100: bag container

110: container body

120: opening closure

130: sealing device

140: capping

141: Upper cover

142: Collar

143: handle

Claims (22)

A bag container with a removable opening closure, comprising: a container body having an open top with an opening and having an interior compartment sized to hold a volume of contents; an opening closure connected to the open top of the container body for closing the opening of the open top, and a sealing device coupled to the opening closure, It is characterized by: The sealing device is detachably mounted on the open top of the container body, and the opening closure is detachably formed in a sealed connection with the open top of the container body by the sealing device. The bag container with a removable opening closure as claimed in claim 1, wherein said sealing means comprises a top wall and a side wall extending downwardly from said top wall, said side wall surrounding and defining a hollow cavity, wherein the top wall and/or the side wall are configured to removably sealably engage with the top of the container body. A bag-type container with a detachable opening closure as claimed in claim 2, wherein the sealing device is provided with a first engaging member, and the open top of the container body is formed to engage with the first engaging member a second engagement member; when the opening closure is connected to the open top, the open top is pressed against and abuts against the sealing device, so that the first engagement member and the second engagement member are pressed Seal tightly. The bag-type container with a detachable opening closure as claimed in claim 3, wherein said sealing device is provided with a third engaging member spaced apart from said first engaging member, and the open top of said container body is A fourth engaging member is formed engageable with the third engaging member; when the open top abuts against the sealing device, the third engaging member is forced to compress and seal with the fourth engaging member. The bag-type container with a detachable opening closure as claimed in claim 4, wherein the first engagement member is formed along the circumference of the side wall of the sealing device, and along the inner surface of the open top of the container body The second engagement member is formed circumferentially; when the opening closure is connected to the open top, the open top is pressed inwardly against the side wall of the seal, causing the first engagement The part is compressed and sealed with the second engaging part. The bag-type container with a detachable opening closure according to claim 5, wherein the third engaging member is formed along the circumferential direction of the side wall of the sealing device and above the first engaging member, along the The circumference of the inner surface of the open top of the container body forms the fourth engagement member; when the open top abuts against the side wall of the sealing device, the third engagement member is forced to contact with the fourth engagement member. Compress to seal. According to claim 6, the bag-type container with a detachable opening closure, wherein, the first engaging member and the second engaging member are formed as a concave-convex structural member interlocking with each other, and/or, the The third engagement piece and the fourth engagement piece are formed as a concave-convex structure interlocked with each other. The bag container with a removable opening closure according to any one of claims 5 to 7, wherein the top wall of the sealing means has a flange, when the sealing means is connected to the open top, The lower surface of the flange is tied against the top edge of the open top. A bag container with a detachable opening closure as claimed in any one of claims 5 to 7, wherein an interlockable fastening element is provided on the side wall of the opening closure and on the open top so that The two lock together better. The bag container with a detachable spout closure as claimed in claim 9, wherein said interlockable fastening element comprises one or more recesses provided on the inner surface of the sidewall of said spout closure, and On the outer surface of the open top, one or more studs that can be engaged with the recesses are provided at positions corresponding to the recesses. The bag container with a removable opening closure according to any one of claims 5 to 7, wherein said sealing means comprises an outlet tube extending upwardly from said top wall, and said outlet tube is connected to said The internal compartment of the container body remains in communication and protrudes beyond the opening closure. 11. The pouch container with removable opening closure of claim 11, wherein said pouch container further comprises a cover, and said cover is detachably secured to said outlet tube. The bag container having a removable opening closure as claimed in claim 4, wherein said sealing means comprises a shoulder connecting said side wall to said top wall, said first engagement member being disposed on said top wall shoulder, and is formed as an annular groove facing upward; An annular tooth extending downward from the lower surface of the lower surface; when the opening closure is connected with the open top, the open top is pressed downward by the opening closure and abuts against the sealing device, so that the Downwardly extending annular teeth are positioned within the upwardly facing annular grooves to form a compression seal. The bag-type container with a detachable opening closure according to claim 13, wherein said opening closure comprises an annular reinforcement protruding downward from its bottom surface, and wherein, when said opening closure is in contact with said opening When the roof is connected, the annular reinforcing member is elastically deformed and pressed against the upper edge of the open roof so as to form a tight engagement between the upwardly facing annular groove and the downwardly extending annular tooth. The bag-type container with a detachable opening closure as claimed in claim 13, wherein the inner surface of the open top of the container body includes an inwardly extending support portion, and the support portion, the upper edge and the The side walls of the open top define a space for receiving the sealing means. The bag container with a detachable opening closure as claimed in claim 15, wherein the third engagement member is arranged on the side wall of the sealing device and is formed as a lateral annular groove, and in the opening A lateral annular tooth is provided between the upper edge of the top and the support portion; when the open top abuts against the sealing means, the lateral annular tooth train is positioned in the lateral annular groove to form a compression seal . The bag container having a removable opening closure according to any one of claims 13 to 16, wherein said sealing means comprises an outlet tube extending upwardly from said top wall, said outlet tube being connected to said The internal compartment of the container body remains in communication and protrudes beyond the opening closure. 17. The bag container with removable opening closure of claim 17, wherein said bag container further comprises a cover, and said cover is removably secured to said outlet tube. The bag container having a removable opening closure as claimed in claim 18, wherein said closure comprises an upper cover portion and a collar, said collar engaging said opening when secured to said outlet tube and a closure to press said opening closure against said open top to form a tight engagement between said upwardly facing annular groove and said downwardly extending annular teeth. The bag-type container with a detachable opening closure according to claim 19, wherein an annular receiving portion is provided inside the upper cover portion for engaging with the upper portion of the outlet pipe. The bag-type container with a detachable opening closure according to any one of claims 1 to 4, wherein the container body, the sealing device and the opening closure are respectively integrally formed. A bag-type container with a detachable opening closure as claimed in any one of claims 1 to 4, wherein the container itself is made of a material comprising silicone or rubber, and the sealing device is closed to the opening The parts are made of materials including polypropylene.

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