CN218056515U - Fresh-keeping packaging cover and packaging container - Google Patents

Abstract

The utility model relates to a lock bright packing lid and packaging container, this lock bright packing lid include upper cover and lower cover, and the lower cover has first end and second end at least, covers the passageway that is provided with the first end of intercommunication and second end down, and the second end is used for connecting the opening of packaging container, and first end is located to the upper cover lid, and the bottom of upper cover is connected with the go-between, is provided with the sealed first sealing of cooperation and second sealing between the outer wall of lower cover and the go-between. The utility model provides a lid open the loaded down with trivial details, the structure after opening cause environmental pollution's technical problem easily.

Description

Fresh-keeping packaging cover and packaging container

Technical Field

The utility model relates to the field of packaging, especially, relate to a lock bright packing lid and packaging container.

Background

Along with the increasing attention of people to environmental protection, whether product packaging can guarantee that user's is healthy and whether the processing after the packing is used can produce harm to the environment and receive more and more concern.

At present, some caps (for example, roof-top caps) for sealing products are shown in fig. 1, and include a lower cap 200 and a dust cap 100, the lower cap 200 is connected to an opening of a packaging container, the dust cap 100 is covered on the lower cap 200, a sealing sheet 300 is disposed in a channel of the lower cap 200 to seal the channel, and a pull ring 400 is connected to the sealing sheet 300. For the lid structure, a user needs to open the lid at two parts, namely, the upper dustproof lid 100 is opened at the first step, the sealing piece 300 is uncovered by pulling the pull ring 400 at the second step, and at the moment, the passage of the lower lid 200 is in an open state, so that the food in the container can be eaten. However, the cap has disadvantages that the opening process is complicated, the removed tab 400 and the sealing sheet 300 cannot maintain the connection state with the cap and can only be discarded, which not only wastes the packaging material, but also generates unnecessary garbage and easily damages the environment.

Aiming at the problems that the opening steps of a cover adopted by a product needing sealing in the related technology are complicated, and the opened structural part easily causes environmental pollution, an effective solution is not provided at present.

Therefore, the inventor provides a fresh-locking packaging cover and a packaging container by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lock bright packing lid and packaging container only needs one-step operation can accomplish opening of lid, can guarantee good sealed effect moreover under the state of not opening.

Another object of the utility model is to provide a lock bright packing lid and packaging container under the prerequisite of guaranteeing good sealed effect, cancelled gasket and pull ring structure on the current lid, can not produce the structure that needs abandon after the lid is opened, avoid causing the pollution to the environment.

The purpose of the utility model can be realized by adopting the following scheme:

the utility model provides a lock bright packing lid, lock bright packing lid includes upper cover and lower cover, the lower cover has first end and second end at least, be provided with the intercommunication on the lower cover first end with the passageway of second end, the second end is used for connecting the opening of packing container, the upper cover lid is located first end, the bottom of upper cover is connected with the go-between, the outer wall of lower cover with be provided with the sealed first sealing of cooperation and second sealing between the go-between.

In a preferred embodiment of the present invention, the lower cover is a vertically arranged cylindrical structure with two open ends, and the first end and the second end are respectively a top opening and a bottom opening of the lower cover; the upper cover is a vertical structure, the top end of the upper cover is sealed, the bottom end of the upper cover is provided with an opening, and the upper cover is covered on the lower cover so as to block the first end.

In a preferred embodiment of the present invention, the first sealing portion is an edge, the circumference of the lower cover is arranged on the first convex ring on the outer wall of the lower cover, the circumference of the connecting ring is arranged on the second convex ring on the inner wall of the connecting ring, the second sealing portion is arranged below the first sealing portion, and the top surface of the second sealing portion is abutted against the bottom surface of the first sealing portion.

In a preferred embodiment of the present invention, the bottom surface of the first sealing portion is formed by being close to the lower cover and being gradually inclined downward toward the lower cover, so that a groove is formed below the first sealing portion, and the second sealing portion is fixed in the groove.

In a preferred embodiment of the present invention, the top surface of the second sealing portion is close to the connecting ring to be away from the direction of the connecting ring gradually inclines upward, and is the same as the inclination angle of the bottom surface of the first sealing portion, so that the second sealing portion is clamped in the clamping groove, and the top surface of the second sealing portion is tightly attached to the bottom surface of the first sealing portion.

In a preferred embodiment of the present invention, a plurality of connecting bridges are connected between the top of the connecting ring and the bottom of the upper cover, and the connecting bridges are disconnected to detach the upper cover.

In a preferred embodiment of the present invention, the connecting bridge is a connection between the connecting ring and the connection point of the upper cover, each of the connecting bridges is arranged along the connecting ring and the circumferential interval of the upper cover.

The utility model discloses an in a preferred embodiment, just be located on the outer wall of lower cover the below of go-between is provided with spacing boss, the bottom of go-between with the top of spacing boss offsets.

In a preferred embodiment of the present invention, the limiting boss and the first sealing portion leave an annular space therebetween, the second sealing portion is located in the annular space, and the second sealing portion is opposite to the annular space.

The present invention provides a portable electronic device, wherein the top inner wall of the upper cover is provided with a third sealing portion and a fourth sealing portion, a gap is left between the third sealing portion and the fourth sealing portion, the top of the lower cover is embedded into the gap, and the top inner wall and the outer wall of the lower cover are respectively closely attached to the third sealing portion and the fourth sealing portion.

In a preferred embodiment of the present invention, the third sealing portion and the fourth sealing portion are both edges of the sealing ring disposed circumferentially on the upper cover, the third sealing portion and the fourth sealing portion are disposed coaxially, and the length of the third sealing portion in the vertical direction is different from the length of the fourth sealing portion in the vertical direction.

In a preferred embodiment of the present invention, the length of the third sealing portion in the vertical direction is greater than the length of the fourth sealing portion in the vertical direction.

In a preferred embodiment of the present invention, the edge of the second end is provided with an outer extension portion along the circumferential direction thereof, the outer extension portion is radially away from the annular structure extending in the direction of the lower cover, the lower cover is connected to the packaging container, and the bottom surface of the outer extension portion is connected to the packaging container.

In a preferred embodiment of the present invention, the upper cover is connected to the lower cover by a screw.

In a preferred embodiment of the present invention, the inner wall of the upper cover and the outer wall of the lower cover are respectively provided with an internal thread and an external thread, and the upper cover and the lower cover are connected by the internal thread and the external thread.

In a preferred embodiment of the present invention, the upper cover is connected to the lower cover by a snap fit.

In a preferred embodiment of the present invention, the outer wall of the upper cover is provided with anti-slip lines.

The utility model provides a packaging container, packaging container includes packaging container main part and foretell lock bright packaging lid, lock bright packaging lid and locate the opening part of packaging container main part.

In a preferred embodiment of the present invention, the bottom surface of the outer extension portion of the fresh food packaging cover is close to the opening of the packaging container main body, and the outer wall of the packaging container main body is hermetically bonded.

From the above, the utility model discloses a lock bright packing lid and packaging container's characteristics and advantage are: the upper cover is arranged on the lower cover, the connecting ring is connected to the bottom of the upper cover, the first sealing part and the second sealing part are arranged between the outer wall of the lower cover and the connecting ring, and the first sealing part and the second sealing part are matched for sealing in a covering state of the upper cover and the lower cover without arranging sealing structural members such as a sealing sheet, a pull ring and the like, so that the cover can be opened only by taking down the upper cover, the operation is simple and convenient, and the use experience of consumers can be improved; in addition, because under the state that the upper cover is opened, the first sealing part and the second sealing part can not be separated from the cover, the waste of materials and the environmental pollution can not be caused, and the packaging container is suitable for being popularized and used on various packaging containers.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

FIG. 1: is a partial cross-sectional view of a prior art package closure.

FIG. 2: is a perspective view of the fresh packaging cover locked in the embodiment of the utility model.

FIG. 3: is a front partial sectional view of the fresh packaging cover locked in the embodiment of the utility model.

FIG. 4: a partial enlarged view of the position a in fig. 3.

FIG. 5: one of the partial enlarged views at the position B in fig. 3.

FIG. 6: a second enlarged view of the portion B in FIG. 3.

FIG. 7: is a perspective view of the upper cover in the embodiment of the utility model.

FIG. 8: is a front cross-sectional view of the upper cover in the embodiment of the utility model.

FIG. 9: is a perspective view of the lower cover in the embodiment of the utility model.

FIG. 10: is a front cross-sectional view of the lower cover in the embodiment of the utility model.

FIG. 11: is a perspective view of the packaging container in the embodiment of the utility model.

FIG. 12: is a perspective view of the packaging container body in the embodiment of the utility model.

The reference numbers in the background art are:

100. a dust cover; 200. A lower cover;

300. sealing the sheet; 400. And (4) a pull ring.

The utility model provides an reference numeral does:

1. an upper cover; 101. A third seal portion;

102. a fourth seal portion; 103. A gap;

104. an internal thread; 105. Anti-skid lines;

2. a lower cover; 201. A first seal portion;

202. a card slot; 203. A limiting boss;

204. an external thread; 205. An extension portion;

206. a channel; 207. A first end;

208. a second end; 3. A connecting ring;

301. a second seal portion; 4. A connecting bridge;

5. a packaging container body; 501. And (4) opening.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

The words with directions indicated in the present invention, such as up, down, top, bottom, inner, and outer, are all defined by the directions of up, down, top, bottom, inner, and outer in the attached drawing 3, and are described herein together.

Implementation mode one

As shown in fig. 2 to 10, the utility model provides a lock bright packaging lid, this lock bright packaging lid includes upper cover 1 and lower cover 2, lower cover 2 has first end 207 and second end 208 at least, be provided with the passageway 206 of intercommunication first end 207 and second end 208 on the lower cover 2, lower cover 2 is connected with packaging container, second end 208 is used for connecting packaging container's opening 501, first end 207 is located to upper cover 1 lid, the bottom of upper cover 1 is connected with go-between 3, be provided with the sealed first sealing 201 of cooperation and second sealing 301 between the outer wall of lower cover 2 and the go-between 3.

The utility model discloses be connected with go-between 3 in the bottom of upper cover 1, set up first sealing 201 and second sealing 301 between the outer wall of lower cover 2 and go-between 3, under upper cover 1 and the 2 lid of lower cover closed the state, cooperate through first sealing 201 and second sealing 301 and form first order seal structure, reach sealed, do not leak, the effect that external foreign matter can't get into, satisfy the sealed requirement of contact food. Due to the arrangement of the first sealing part 201 and the second sealing part 301, sealing structural members such as a sealing sheet and a pull ring are not required to be arranged, a consumer only needs to take off the upper cover 1 in the eating process to conduct the channel 206 of the lower cover 2, opening of the cover is completed, one-step operation is simple, convenient and fast, and the use experience of the consumer can be improved; in addition, since the first sealing portion 201 and the second sealing portion 301 are not separated from the lid in the open state of the upper lid 1, there is no structural member to be discarded after the lid is opened, and material waste and environmental pollution are not caused.

Specifically, as shown in fig. 2, 3, and 7 to 10, the lower cover 2 is a vertically arranged cylindrical structure with two open ends, the first end 207 is an opening at the top end of the lower cover 2, and the second end 208 is an opening at the bottom end of the lower cover 2; the upper cover 1 is vertical setting, the top seals, the bottom open-ended cylindric structure, and the upper cover 1 lid is located on the lower cover 2 to carry out the shutoff to the first end 207 of lower cover 2.

In an optional embodiment of the present invention, as shown in fig. 3, fig. 5, and fig. 8 to fig. 10, the first sealing portion 201 is a first convex ring disposed on the outer wall of the lower cover 2 along the circumference of the lower cover 2, the second sealing portion 301 is a second convex ring disposed on the inner wall of the connecting ring 3 along the circumference of the connecting ring 3, the first sealing portion 201 is located near the second end 208 of the lower cover 2, the second sealing portion 301 is located below the first sealing portion 201, and when the upper cover 1 and the lower cover 2 are closed, the top surface of the second sealing portion 301 abuts against the bottom surface of the first sealing portion 201, so as to achieve the sealing effect, and achieve the purposes that the food in the packaging container does not leak, and the external foreign matters or air cannot enter.

Further, as shown in fig. 5 and 6, the bottom surface of the first sealing portion 201 is gradually inclined downward from the direction close to the lower cover 2 to the direction away from the lower cover 2, so as to form a card slot 202 below the first sealing portion 201, the cross section of the card slot 202 is in a barb shape, and the second sealing portion 301 is clamped in the card slot 202. The clamping groove 202 is matched with the first sealing portion 201, so that not only can a stable sealing effect be achieved, but also the connecting ring 3 can be limited in the axial direction, and further the upper cover 1 is prevented from being opened by mistake.

Further, as shown in fig. 6, the top surface of the second sealing portion 301 gradually inclines upwards from the direction close to the connection ring 3 to the direction away from the connection ring 3, and the inclination angle of the top surface of the second sealing portion 301 is the same as the inclination angle of the bottom surface of the first sealing portion 201 (i.e., the cross section of the second sealing portion 301 is in the shape of a barb matched with the slot 202), so that the second sealing portion 301 is clamped in the slot 202, and under this structure, the first sealing portion 201 and the second sealing portion 301 have the largest contact area, so that the top surface of the second sealing portion 301 is tightly attached to the bottom surface of the first sealing portion 201, and the best sealing effect is achieved.

Specifically, the outer diameter of the connection ring 3 may be, but is not limited to, 30.2mm, the inner diameter of the connection ring 3 may be, but is not limited to, 29.7mm, and the diameter of the second sealing portion 301 is slightly, but is not limited to, 29mm.

In an optional embodiment of the present invention, as shown in fig. 3, 5, 6, and 8, a plurality of connecting bridges 4 are connected between the top edge of the connecting ring 3 and the bottom edge of the upper cover 1, and when the upper cover 1 and the lower cover 2 are in a closed state, the connecting ring 3 is connected to the upper cover 1 through the connecting bridges 4; when the upper cover 1 needs to be opened, the upper cover 1 needs to be removed by screwing or pulling the upper cover 1 to disconnect the connecting bridges 4.

Specifically, as shown in fig. 3, 5, 6, and 8, the connecting bridges 4 are connecting points for connecting the connecting ring 3 and the upper cover 1, and the connecting bridges 4 are uniformly arranged along the circumferential direction of the connecting ring 3 and the upper cover 1 at intervals.

In an optional embodiment of the present invention, as shown in fig. 3, fig. 5, fig. 6, and fig. 10, a limiting boss 203 is disposed on the outer wall of the lower cover 2 and below the connecting ring 3, the limiting boss 203 is a circular convex step disposed along the circumference of the lower cover 2, and when the upper cover 1 and the lower cover 2 are in a covering state, the bottom of the connecting ring 3 abuts against the top of the limiting boss 203. The limiting boss 203 is used for limiting and supporting the connecting ring 3, the bottom of the connecting ring 3 is abutted to the limiting boss 203, the top of the connecting ring 3 is connected with the upper cover 1 through the connecting bridge 4, and the top surface of the second sealing portion 301 on the connecting ring 3 is attached to the bottom surface of the first sealing portion 201, so that the positions of the connecting ring 3 are fixed in multiple positions, and the stability of the connecting ring 3 and a good sealing effect in the positions are guaranteed.

Furthermore, as shown in fig. 3, 5, and 6, an annular space is left between the limiting boss 203 and the first sealing portion 201, the second sealing portion 301 is located in the annular space, and the second sealing portion 301 abuts against the outer wall of the lower cover 2 opposite to the annular space, so that a sealing contact surface is further increased, and a sealing effect is improved.

Specifically, the outer diameter of the first sealing portion 201 may be, but is not limited to, 28mm, and the diameter of the annular space between the position-limiting boss 203 and the first sealing portion 201 may be, but is not limited to, 26.4mm.

In an optional embodiment of the present invention, as shown in fig. 3, fig. 4, and fig. 8, a third sealing portion 101 and a fourth sealing portion 102 are disposed on the top inner wall of the upper cover 1, the third sealing portion 101 and the fourth sealing portion 102 are circular sealing rings disposed along the circumference of the upper cover 1, the third sealing portion 101 and the fourth sealing portion 102 are coaxially disposed, an annular gap 103 is left between the third sealing portion 101 and the fourth sealing portion 102, when the upper cover 1 and the lower cover 2 are in a covering state, the top of the lower cover 2 is embedded into the gap 103, the top inner wall of the lower cover 2 is tightly attached to the third sealing portion 101, and the outer wall of the lower cover 2 is tightly attached to the fourth sealing portion 102. The third sealing part 101, the fourth sealing part 102 and the top of the lower cover 2 are matched to form a second-stage sealing structure, so that the sealing performance of the upper cover 1 and the lower cover 2 in a covering state is further guaranteed, and the sealing effect is improved.

Further, as shown in fig. 3, 4, and 8, the length of the third sealing portion 101 in the vertical direction is different from the length of the fourth sealing portion 102 in the vertical direction, so that the entry position of the gap 103 is increased, and the top of the lower cover 2 is easily inserted into the gap 103 during the process of closing the upper cover 1 and the lower cover 2.

Specifically, as shown in fig. 3, 4 and 8, the length of the third sealing portion 101 in the vertical direction is greater than the length of the fourth sealing portion 102 in the vertical direction, so that a larger sealing contact area is formed between the inner wall of the top portion of the lower cover 2 and the third sealing portion 101, and food in the packaging container is better prevented from entering between the inner wall of the upper cover 1 and the outer wall of the lower cover 2, and the sealing effect achieved by the cooperation of the third sealing portion 101, the fourth sealing portion 102 and the top portion of the lower cover 2 is improved.

In an optional embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 9, and fig. 10, the edge of the second end 208 is provided with an outer extension portion 205 along its circumference, the outer extension portion 205 is a circular ring-shaped structure extending radially towards the direction away from the lower cover 2, and when the lower cover 2 is connected with the packaging container, the bottom surface of the outer extension portion 205 is used for being connected with the packaging container, so as to ensure the stability of the connection of the lower cover 2 with the packaging container. The improved fitting and connection stability of the outer extension portion 205 to the packaging container enables the packaging container to have better freshness-locking capability.

Specifically, the diameter of the outer edge of the extension portion 205 may be, but is not limited to, 29.8mm to 30.2mm.

In an alternative embodiment of the present invention, as shown in fig. 3, 8 and 10, the upper cover 1 is screwed with the lower cover 2.

Specifically, as shown in fig. 3, 8, and 10, an inner wall of the upper cover 1 is provided with an inner thread 104, an outer wall of the lower cover 2 is provided with an outer thread 204, the upper cover 1 and the lower cover 2 are connected by the inner thread 104 and the outer thread 204 in a matching manner, and the upper cover 1 is screwed forward or backward to close the upper cover 1 and the lower cover 2 or open the upper cover 1. The axial distance between the external thread 204 and the second end 208 of the lower cap 2, and the circumferential distance between the internal thread 104 and the second end 208 of the lower cap 2 in the closed state of the upper cap 1 and the lower cap 2 may be, but not limited to, 10mm, which is greater than the position where the thread is provided on the existing cap, so as to reserve a larger clearance space for providing the first sealing portion 201.

In another optional embodiment of the present invention, the upper cover 1 and the lower cover 2 can be connected by a snap (not shown).

Specifically, at least one annular first clamping convex ring (not shown) is arranged on the inner wall of the upper cover 1 along the circumferential direction of the inner wall, at least one annular second clamping convex ring (not shown) is arranged on the outer wall of the lower cover 2 along the circumferential direction of the outer wall of the upper cover, the upper cover 1 and the lower cover 2 are clamped in a matched mode through the first clamping convex ring and the second clamping convex ring, and the upper cover 1 is pressed or pulled to complete the covering between the upper cover 1 and the lower cover 2 or the opening of the upper cover 1.

In another optional embodiment of the present invention, the outer wall of the upper cover 1 is provided with the anti-slip pattern 105, the anti-slip pattern 105 is a plurality of ribs vertically disposed on the outer wall of the upper cover 1, each rib is uniformly arranged on the outer wall of the upper cover 1 along the circumference of the upper cover 1, and the friction force of the outer wall of the upper cover 1 can be increased through the anti-slip pattern 105, so as to facilitate the opening and closing of the upper cover 1.

In an alternative embodiment of the present invention, the upper cover 1 and/or the lower cover 2 may be made of PE material or PP material. The sum of the weight of the upper lid 1 and the lower lid 2 is reduced by about 0.6g compared to the existing lid (having a sealing sheet and a tab).

The utility model discloses a lock bright packaging lid's characteristics and advantage are:

1. in this lock bright packaging cover, first sealing 201 and the cooperation of second sealing 301 form first order seal structure, third sealing 101, fourth sealing 102 forms second seal structure with the top cooperation of lower cover 2, need not to set up sealing structure spare such as gasket and pull ring, also can guarantee upper cover 1 and the lower cover 2 lid and close good sealed effect under the state, only need take off the upper cover and can accomplish opening of lid, and is easy and simple to handle, can promote consumer's use and experience.

2. This lock is bright to be packed and is covered under 1 open mode in upper cover, can not produce the structure with the lid phase separation, and then can not cause the waste and the environmental pollution of material, is suitable for and uses widely on multiple packaging container.

3. This lock bright packing lid passes through multistage seal structure, reaches good sealed, lock bright effect, can play the bright effect of lock to the food of splendid attire in the packaging container in the use to effectively prolong the shelf life of product, guarantee the good quality of product.

Second embodiment

As shown in fig. 11 and 12, the utility model provides a packaging container, this packaging container includes packaging container main part 5 and the foretell bright packing lid of lock, and the top of packaging container main part 5 is provided with opening 501, locks bright packing lid and locates the opening 501 department of packaging container main part 5.

In an alternative embodiment of the present invention, as shown in fig. 11, the bottom surface of the outer extension 205 of the freshness protection package cover is hermetically bonded to the outer wall of the packaging container body 5 near the opening 501 of the packaging container body 5. Of course, other connection modes such as clamping connection and threaded connection can be adopted for fixing, so that stable connection and good sealing are ensured, and limitation is not required.

Further, the height of the freshness protection package cover (the upper cover 1 and the lower cover 2 in a closed state) may be, but is not limited to, 14.9mm.

The packaging container body 5 of the present invention may be a roof-shaped packaging container. Of course, the packaging container body 5 can also be a bottle (e.g. HDPE bottle, PET bottle), a cup (e.g. plastic cup) and a box (e.g. paper-based packaging box) or other containers capable of containing drinks.

The above description is only illustrative of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims (19)

1. The utility model provides a lock bright packaging lid, its characterized in that, lock bright packaging lid includes upper cover and lower cover, the lower cover has first end and second end at least, be provided with the passageway of intercommunication first end with the second end on the lower cover, the second end is used for connecting the opening of packaging container, the upper cover lid is located first end, the bottom of upper cover is connected with the go-between, the outer wall of lower cover with be provided with the sealed first seal portion of cooperation and second seal portion between the go-between.

2. The seafood locking and packaging cover of claim 1, wherein the lower cover is a vertically arranged cylindrical structure with two open ends, and the first end and the second end are respectively a top end opening and a bottom end opening of the lower cover; the upper cover is a vertical structure, the top end of the upper cover is sealed, the bottom end of the upper cover is provided with an opening, and the upper cover is covered on the lower cover so as to block the first end.

3. The crisper packaging lid according to claim 1 or 2, wherein the first sealing portion is a first convex ring provided on an outer wall of the lower lid in a circumferential direction of the lower lid, and the second sealing portion is a second convex ring provided on an inner wall of the connection ring in the circumferential direction of the connection ring, the second sealing portion being located below the first sealing portion, and a top surface of the second sealing portion being abutted against a bottom surface of the first sealing portion.

4. The seafood packaging lid of claim 3, wherein a bottom surface of the first sealing portion is inclined downward from a position close to the lower lid to a position away from the lower lid, so as to form a locking groove below the first sealing portion, and the second sealing portion is locked in the locking groove.

5. The freshness protection package cover according to claim 4, wherein a top surface of the second sealing portion is inclined upward gradually from a position close to the connection ring to a position away from the connection ring, and the inclination angle of the top surface of the second sealing portion is the same as that of the bottom surface of the first sealing portion, so that the second sealing portion is clamped in the clamping groove, and the top surface of the second sealing portion is tightly attached to the bottom surface of the first sealing portion.

6. The seafood packaging lid according to claim 1 or 2, wherein a plurality of connecting bridges are connected between the top of said connecting ring and the bottom of said upper lid, and said upper lid can be removed by breaking said plurality of connecting bridges.

7. The crisper packaging lid of claim 6, wherein the connecting bridges are connecting points connecting the connecting ring and the upper lid, and the connecting bridges are arranged at intervals along a circumferential direction of the connecting ring and the upper lid.

8. The seafood packaging lid of claim 6, wherein a limiting boss is provided on the outer wall of the lower lid and below the connecting ring, and the bottom of the connecting ring abuts against the top of the limiting boss.

9. The seafood locking package lid of claim 8, wherein an annular space is left between the limiting boss and the first sealing portion, the second sealing portion is located in the annular space, and the second sealing portion abuts against an outer wall of the lower lid opposite to the annular space.

10. The seafood locking and packaging lid of claim 1 or 2, wherein a third sealing portion and a fourth sealing portion are disposed on the inner wall of the top portion of the upper lid, a gap is left between the third sealing portion and the fourth sealing portion, the top portion of the lower lid is inserted into the gap, and the inner wall and the outer wall of the top portion of the lower lid are respectively tightly attached to the third sealing portion and the fourth sealing portion.

11. The seafood locking and packaging lid of claim 10, wherein the third seal portion and the fourth seal portion are each a seal ring provided along a circumferential direction of the upper lid, the third seal portion is provided coaxially with the fourth seal portion, and a length of the third seal portion in a vertical direction is different from a length of the fourth seal portion in the vertical direction.

12. The crisper package lid of claim 11, wherein the length of the third seal in the vertical direction is greater than the length of the fourth seal in the vertical direction.

13. The crisper package of claim 1 or 2, wherein the rim of the second end is provided with an extension along its circumference, the extension being an annular structure extending radially away from the lower lid, and wherein a bottom surface of the extension is adapted to be connected to the package in a state of the lower lid being connected to the package.

14. The crisper packaging lid of claim 1 or 2, wherein the upper lid is threadably connected to the lower lid.

15. The seafood packaging lid of claim 14, wherein the inner wall of the upper lid and the outer wall of the lower lid are respectively provided with an internal thread and an external thread, and the upper lid and the lower lid are connected with each other by the internal thread and the external thread in a matching manner.

16. The crisper package lid of claim 1 or 2, wherein the upper lid and the lower lid are snap-fit connected.

17. The seafood-locking package lid of claim 1 wherein said top lid is provided with non-slip threads on its outer wall.

18. A packaging container, characterized in that the packaging container comprises a packaging container body and the freshness protection package cover of any one of claims 1 to 17, the freshness protection package cover being provided at an opening of the packaging container body.

19. The packaging container according to claim 18, wherein a bottom surface of the outward extension of the freshness retaining package cover is sealingly bonded to an outer wall of the packaging container body near the opening of the packaging container body.

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