Packaging bag for vacuum packaging of food

Abstract

The utility model discloses a packaging bag for food vacuum packaging, which comprises a packaging bag body, the top of the packaging bag body is sleeved with a sealing component, and the front side and the rear side of the packaging bag body are jointly provided with a guide mechanism; the sealing assembly comprises a clamping plate. When the improved packaging bag for food vacuum packaging is used, the opening end of the packaging bag body is clamped through the clamping plates to complete sealing operation of the packaging bag, most of gas at the bottom in the packaging bag body can be directly extruded out of the packaging bag through downward movement of the clamping plates and pressing of the packaging bag body, and the packaging bag is convenient to use. According to the packaging bag, food is stored in a nearly vacuum state in the packaging bag, the packaging bag has a good storage effect on remaining food, and the situation that the remaining food in the packaging bag is in contact with outside air for a long time, the remaining food in the packaging bag is rapidly damaged, and then food waste is caused can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum packaging bags, in particular to a packaging bag used for vacuum packaging of food. Background Art

[0002] In existing food processing, some foods are packaged in vacuum packaging bags to facilitate food preservation. The principle of forming a vacuum inside a vacuum package is to use packaging materials with good barrier properties and sealing properties, combined with heat sealing or cold sealing technology to achieve the sealing of the packaging bag, and then use the vacuum equipment of the vacuum packaging machine to extract the air in the packaging bag to form a vacuum state; finally, the vacuum state inside the packaging bag is maintained by sealing the bag mouth again.

[0003] In the existing food vacuum packaging bags, the operator usually tears the packaging bag open to release the sealed state of the packaging bag opening. Since some users do not finish eating the food in the packaging bag at one time, they will still leave the food in the packaging bag. At this time, the food in the packaging bag will be fully exposed to the air for a long time, which will affect the storage effect of the food. In severe cases, the food in the packaging bag may be damaged, thereby causing food waste. Utility Model Content

[0004] The purpose of the utility model is to provide a packaging bag for food vacuum packaging, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a packaging bag for food vacuum packaging, comprising a packaging bag body, a sealing assembly is sleeved on the top of the packaging bag body, and a guide mechanism is provided on both the front and rear sides of the packaging bag body;

[0006] The sealing assembly includes a splint, which is sleeved on the top of the packaging bag body, and the front and rear side walls of the packaging bag body are interference fit with the inner wall of the splint, the splint is composed of a limit bar and a support bar, and the two ends of the support bar are respectively in contact with the two ends of the limit bar, and a plurality of soft blocks are fixedly installed through the limit bar, and the spacing between two adjacent soft blocks is equal, and the side of the soft block close to the support bar extends to the outside of the limit bar and is coplanar with the inner wall of the limit bar, and the support bar and the limit bar are connected by a connecting mechanism.

[0007] Preferably, both ends of the limiting strip are arranged in a U shape, and the left and right sides of the packaging bag body are in contact with the limiting strip.

[0008] Preferably, the outer wall of the clamping plate is arranged in an arc shape, and the opening edges at both ends of the clamping plate facing downward are arranged in an arc shape.

[0009] Preferably, the interior of the soft block is hollow, and the interior of the soft block is filled with air.

[0010] Preferably, the guiding mechanism includes a plurality of guiding strips with a semicircular cross-sectional shape. The plurality of guiding strips are relatively fixedly installed on the front and rear side walls of the packaging bag body. Guide grooves are formed at positions corresponding to the guiding strips on the inner wall of the limiting strip, and the guiding strips slide through the corresponding guide grooves.

[0011] Preferably, the guiding strip is a soft plastic strip, and a limiting block is fixedly installed at the top end of the guiding strip, and the limiting block is fixedly connected to the packaging bag body.

[0012] Preferably, the connecting mechanism includes two clamping blocks. Clamping grooves are formed at the bottom sides of both ends of the limiting strip. The two clamping blocks are relatively fixedly installed at the left and right ends of the support strip, and the clamping blocks are located in the corresponding clamping grooves and are in contact with the inner walls of the corresponding clamping grooves.

[0013] Preferably, the top sides of the clamping blocks and the bottom opening edges of the clamping grooves are both arc-shaped, and the bottom sides of the clamping blocks and the bottom side of the support strip are coplanar.

[0014] Preferably, storage grooves are formed on the front and rear side walls of the clamping groove. The inner wall of the opening end of the storage groove is arc-shaped. Positioning grooves are formed on the clamping block at positions corresponding to the storage grooves. A semi-circular elastic sheet is slidably installed in the storage groove, and the middle part of the elastic sheet is inserted into the corresponding positioning groove and is in contact with the inner wall of the corresponding positioning groove.

[0015] The utility model has the following beneficial effects:

[0016] When the improved packaging bag for food vacuum packaging is used, the sealing operation of the packaging bag is completed by clamping the opening end of the packaging bag body by the clamping plate. By moving down the clamping plate and pressing the packaging bag body, most of the gas at the bottom inside the packaging bag body can be directly extruded from the packaging bag, so as to form a nearly vacuum state inside the packaging bag for storing food. The packaging bag has a good storage effect on the remaining food, and can avoid the remaining food in the packaging bag from being in contact with the external gas for a long time, resulting in the rapid damage of the remaining food in the packaging bag, and further causing food waste. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1Schematic diagram of the whole of the utility model;

[0019] Figure 2 Schematic diagram of the whole structure of the limit strip of the utility model;

[0020] Figure 3 Schematic diagram of the whole structure of the support strip of the utility model;

[0021] Figure 4 Schematic diagram of the whole structure of a part of the guide strip of the utility model;

[0022] Figure 5 Schematic diagram of the internal structure of the limit strip of the utility model;

[0023] Figure 6 Front view of the internal structure of the clamping block of the utility model.

[0024] In the figure: 1. Packaging bag body; 2. Sealing assembly; 21. Clamping plate; 211. Limit strip; 212. Support strip; 22. Soft block; 23. Connection mechanism; 231. Card slot; 232. Clamping block; 233. Storage groove; 234. Positioning groove; 235. Elastic sheet; 3. Guide mechanism; 31. Guide strip; 32. Limit block; 33. Guide groove. Specific implementation manner

[0025] In order to make the technical solutions and advantages of the utility model clearer, the following further details the utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0026] The utility model provides a technical solution: Refer to Figure 1 - Figure 6 , a packaging bag for food vacuum packaging disclosed by the utility model includes a packaging bag body 1, a sealing assembly 2 is sleeved on the top of the packaging bag body 1, and a guide mechanism 3 is jointly arranged on the front and rear sides of the packaging bag body 1;

[0027] The sealing assembly 2 includes a clamping plate 21, the clamping plate 21 is sleeved on the top of the packaging bag body 1, and the front and rear side walls of the packaging bag body 1 are in interference fit with the inner wall of the clamping plate 21. The clamping plate 21 is composed of two parts, a limit strip 211 and a support strip 212, and the two ends of the support strip 212 are respectively connected to the two ends of the limit strip 211. A number of soft blocks 22 are fixedly penetrated and installed in the limit strip 211, and the distance between adjacent two soft blocks 22 is equal. One side of the soft block 22 close to the support strip 212 extends outside the limit strip 211 and is coplanar with the inner wall of the limit strip 211. The support strip 212 and the limit strip 211 are connected by a connection mechanism 23.

[0028] In this embodiment, when the improved food vacuum packaging bag is in use, the operator first holds the limiting strip 211 with one hand and pushes the supporting strip 212 downward with the other hand. At this time, the connecting mechanism 23 automatically releases the connection state between the supporting strip 212 and the limiting strip 211, splitting the clamping plate 21 into two parts. Then, through the deformation of the packaging bag body 1 and the limiting strip 211, the operator inserts the food into the packaging bag body 1 from the opening of the packaging bag. Subsequently, the operator reinserts the supporting strip 212 between the two ends of the limiting strip 211 and completes the assembly of the clamping plate 21 through the connecting mechanism 23. Finally, the operator inserts the air extraction needle of the air extraction device into the opening of the packaging bag, and through the deformation of the soft block 22, it passes through the clamping plate 21 to extract the gas in the packaging bag body 1. Then, the air extraction needle is pulled out of the packaging bag to complete the packaging of the food;

[0029] When the purchaser uses the packaging bag, according to the above method of releasing the closed state of the top opening of the packaging bag body 1, the operator can take out the food from the packaging bag body 1. And when the operator does not need to take out the food, due to the guiding mechanism 3 cooperating with the limiting strip 211 to support and limit the opening end of the packaging bag body 1, the top opening of the packaging bag body 1 is always in a straightened state, and the top opening of the packaging bag body 1 is in a relatively closed state, so that external gas will not continuously flow into the packaging bag body 1;

[0030] When the remaining food in the packaging bag body 1 needs to be stored for a long time, the operator pushes the clamping plate 21 downward, and a high-pressure cavity is formed at the bottom of the packaging bag body 1. At this time, a pressure difference is formed between the upper and lower ends of the soft block 22. Due to the pushing of the gas on the soft block 22, the soft block 22 deforms and contracts, so that most of the gas in the packaging bag body 1 directly passes through the gap between the soft block 22 and the supporting strip 212 and is discharged from the packaging bag. And when the soft block 22 is pushed by the gas, the soft block 22 quickly expands and resets according to the above, so that the top opening of the packaging bag body 1 is in a closed state again. At this time, only a very small amount of gas remains in the packaging bag, and an almost vacuum state can be formed in the packaging bag for storing food. The packaging bag has a good storage effect on the remaining food and can prevent the remaining food in the packaging bag from being in contact with external gas for a long time, resulting in the rapid damage of the remaining food in the packaging bag and thus causing food waste;

[0031] It should be noted that the above-mentioned limiting strips 211 are all elastic plastic strips.

[0032] In a further preferred embodiment of the present invention, as Figure 2 shown, both ends of the limiting strip 211 are U-shaped, and both the left and right sides of the packaging bag body 1 are in contact with the limiting strip 211;

[0033] In this embodiment, the U-shaped settings at both ends of the limiting strip 211 cause both ends of the limiting strip 211 to always be stuck on the two side edges of the packaging bag body 1, thereby preventing the limiting strip 211 from slipping off the packaging bag body 1 and causing the loss of the limiting strip 211, which affects the use of the device.

[0034] In a further preferred embodiment of the present utility model, as Figure 2 , Figure 3 , Figure 5 and Figure 6 shown, the outer wall of the clamping plate 21 is arranged in an arc shape, and the opening edges at both lower ends of the clamping plate 21 are both arranged in an arc shape;

[0035] In this embodiment, the arc-shaped setting of the clamping plate 21 can prevent the sharp end of the clamping plate 21 from rubbing against and sliding on the outer wall of the packaging bag body 1, thereby avoiding scratching the packaging bag body 1 when the above-mentioned clamping plate 21 slides on the packaging bag and affecting the use of the packaging bag.

[0036] In a further preferred embodiment of the present utility model, as Figure 2 shown, the inside of the soft block 22 is arranged in a hollow shape, and the inside of the soft block 22 is filled with air;

[0037] In this embodiment, the air filled inside the soft block 22 can enhance the elasticity of the soft block 22, making it easier for the gas to overflow from the opening of the packaging bag body 1.

[0038] In a further preferred embodiment of the present utility model, as Figure 1 and Figure 4 shown, the guiding mechanism 3 includes a number of guiding strips 31 with a semicircular cross-sectional shape. A number of guiding strips 31 are relatively fixedly installed on the front and rear side walls of the packaging bag body 1. Guiding grooves 33 are formed at the positions corresponding to the guiding strips 31 on the inner wall of the limiting strip 211, and the guiding strips 31 slide through the corresponding guiding grooves 33;

[0039] In this embodiment, when the above-mentioned clamping plate 21 slides on the packaging bag body 1, due to the mutual contact between the guiding strip 31 and the inner wall of the guiding groove 33, the clamping plate 21 moves in a linear trajectory, and the positions between the left and right side edges of the packaging bag body 1 and the limiting strip 211 remain stable;

[0040] When the above-mentioned operator takes out the food from the packaging bag, due to the mutual contact between the guiding strip 31 and the inner wall of the guiding groove 33, and the support of the limiting strip 211 on the packaging bag body 1, the top opening of the packaging bag body 1 is always in a straightened state without external force, and the top opening of the packaging bag body 1 is in a relatively closed state, thereby preventing external gas from continuously flowing into the packaging bag body 1 and avoiding external gas from continuously flowing into the packaging bag.

[0041] In a further preferred embodiment of the present utility model, as Figure 4 shown, the guiding strip 31 is a soft plastic strip, and a limiting block 32 is fixedly installed at the top end of the guiding strip 31, and the limiting block 32 is fixedly connected to the packaging bag body 1;

[0042] In this embodiment, the guiding strip 31 made of a soft rubber strip is provided, so that the setting of the guiding strip 31 hardly affects the deformation reset of the packaging bag, and the setting of the limiting block 32 makes the guiding strip 31 not slide in the guiding groove 33, further restricting and limiting the limiting strip 211, so that the limiting strip 211 does not slide off the packaging bag body 1.

[0043] In a further preferred embodiment of the present utility model, as Figure 1 、 Figure 3 、 Figure 5 and Figure 6 shown, the connecting mechanism 23 includes two clamping blocks 232. Card slots 231 are respectively formed in the bottom sides of both ends of the limiting strip 211. The two clamping blocks 232 are relatively fixedly installed at the left and right ends of the support strip 212, and the clamping blocks 232 are located in the corresponding card slots 231 and are in contact with the inner walls of the corresponding card slots 231;

[0044] In this embodiment, when the clamping plate 21 is disassembled, as the limiting strip 211 is separated from the support strip 212, the clamping blocks 232 can be directly taken out of the card slots 231 together; when the clamping plate 21 is assembled, the operator can directly insert the support strip 212 between both ends of the limiting strip 211, and the clamping blocks 232 can be directly inserted into the card slots 231 again, without the operator performing other operations. The disassembly and assembly operations of the clamping plate 21 are simple.

[0045] In a further preferred embodiment of the present utility model, as Figure 5 and Figure 6 shown, the top sides of the clamping blocks 232 and the bottom opening edges of the card slots 231 are both arranged in an arc shape, and the bottom sides of the clamping blocks 232 are coplanar with the bottom side of the support strip 212;

[0046] In this embodiment, the arc-shaped setting of the bottom opening edge of the card slot 231 can increase the bottom opening area of the card slot 231, and the arc-shaped setting of the top of the clamping block 232 can reduce the top area of the clamping block 232, so that the clamping block 232 is more easily inserted into the card slot 231.

[0047] In a further preferred embodiment of the present utility model, as Figure 4 and Figure 6As shown, storage slots 233 are provided on both the front and rear side walls of the card slot 231, and the inner wall of the open end of the storage slot 233 is arranged in an arc shape. A positioning slot 234 is provided at a position corresponding to the storage slot 233 on the card block 232, and a semi-circular spring piece 235 is slidably installed in the storage slot 233, and the middle part of the spring piece 235 is inserted into the corresponding positioning slot 234 and contacts the inner wall of the corresponding positioning slot 234;

[0048] In this embodiment, when assembling the clamping plate 21, the operator re-inserts the support bar 212 between the two ends of the limiting bar 211, and reinserts the block 232 into the slot 231. When the block 232 moves to the position of the spring sheet 235, the spring sheet 235 is pressed into the storage slot 233 due to the mutual interference between the top arc surface of the block 232 and the outer arc wall of the spring sheet 235, so that the block 232 can be fully inserted into the slot 231. After the block 232 is fully inserted into the slot 231, the spring sheet 235 is aligned with the fixed position. The spring sheet 235 is deformed and reset, and the middle part of the spring sheet 235 automatically extends from the storage slot 233 and is inserted into the positioning slot 234. At this time, due to the mutual interference between the spring sheet 235 and the inner wall of the positioning slot 234, a restraining force can be applied to the support bar 212 and the limiting bar 211, so that when the support bar 212 and the limiting bar 211 are not subjected to a large external force, the support bar 212 and the limiting bar 211 are stably spliced ​​into a complete splint 21, so as to enhance the stability of the support bar 212 and the limiting bar 211 when splicing.

[0049] Working principle: When using the improved packaging bag for food vacuum packaging, the operator first holds the limiting strip 211 with one hand and pushes the supporting strip 212 downward with the other hand. At this time, due to the mutual interference between the inner wall of the positioning groove 234 and the spring sheet 235, the spring sheet 235 can be pressed into the storage groove 233 along the outer arc wall of the spring sheet 235 through elastic deformation, thereby automatically releasing the restraining state between the supporting strip 212 and the limiting strip 211, and then splitting the clamping plate 21 into two parts;

[0050] Then, the operator inserts the food into the packaging bag body 1 from the opening of the packaging bag through the deformation of the packaging bag body 1 and the deformation of the limiting strip 211, and then the operator re-inserts the support strip 212 between the two ends of the limiting strip 211, and reinserts the card block 232 into the card slot 231. When the card block 232 moves to the position of the spring sheet 235, the spring sheet 235 is pressed into the storage slot 233 due to the mutual interference between the top side arc surface of the card block 232 and the outer arc wall of the spring sheet 235, so that the card block 232 can be completely inserted into the card slot 231. After the card block 232 is completely inserted into the card slot 231, the spring piece 235 is aligned with the positioning slot 234. At this time, due to the deformation and reset of the spring piece 235, the middle part of the spring piece 235 automatically extends from the storage slot 233 and is inserted into the positioning slot 234. At this time, due to the mutual interference between the spring piece 235 and the inner wall of the positioning slot 234, a restraining force can be applied to the support bar 212 and the limiting bar 211, so that when the support bar 212 and the limiting bar 211 are not subjected to a large external force, the support bar 212 and the limiting bar 211 are stably spliced ​​into a complete splint 21;

[0051] After the food is loaded in the packaging bag, the operator inserts the suction needle of the suction device into the opening of the packaging bag and passes through the clamping plate 21 at the position of the soft block 22 to extract the gas in the packaging bag body 1, and then pulls the suction needle out of the packaging bag to complete the packaging;

[0052] It should be noted that, when the suction needle passes through the clamping plate 21, the soft block 22 is deformed and reset, and the distance between the soft block 22 and the support plate is automatically expanded to leave space for the suction needle to pass through the clamping plate 21. When the suction needle is pulled out of the clamping plate 21, the soft block 22 is pushed by the gas in the soft block 22, and the soft block 22 is quickly deformed and reset, and the clamping and squeezing of the corresponding position of the opening end of the packaging bag body 1 is resumed, and the opening of the packaging bag body 1 is automatically closed. At this time, the food in the packaging bag is stored in a relatively closed space;

[0053] When the purchaser uses the packaging bag, the operator releases the closed state of the top opening of the packaging bag body 1 according to the above, and the operator can take out the food from the packaging bag body 1. When the operator does not need to take out the food, due to the mutual interference between the guide strip 31 and the inner wall of the guide groove 33, and the support of the packaging bag body 1 by the limit strip 211, the top opening of the packaging bag body 1 is always in a straight state, and the top opening of the packaging bag body 1 is in a relatively closed state, so that the external gas will not continue to flow into the packaging bag body 1;

[0054] When the remaining food in the packaging bag body 1 needs to be stored for a long time, the operator reassembles the clamping plate 21 according to the above method. Subsequently, the operator pushes the clamping plate 21 downward. Due to the mutual contact between the guiding strip 31 and the inner wall of the guiding groove 33, the clamping plate 21 moves along a linear trajectory, and the positions of the left and right sides of the packaging bag body 1 relative to the limiting strip 211 remain stable. As the clamping plate 21 moves downward and restricts and positions the packaging bag body 1, a high-pressure cavity is formed at the bottom inside the packaging bag body 1. At this time, a pressure difference is formed between the upper and lower ends of the soft block 22. Due to the pushing of the gas on the soft block 22, the soft block 22 deforms and contracts, enabling most of the gas inside the packaging bag body 1 to directly pass through the gap between the soft block 22 and the support strip 212 and be discharged from the packaging bag. Moreover, when the soft block 22 is pushed by the gas, the soft block 22 quickly expands and resets according to the above method, causing the top opening of the packaging bag body 1 to be closed again. At this time, only a very small amount of gas remains inside the packaging bag, and a nearly vacuum state can be formed inside the packaging bag for food storage.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging bag for vacuum packaging of food, comprising a packaging bag body (1), characterized in that: The top of the packaging bag body (1) is sleeved with a sealing assembly (2), and the front and rear sides of the packaging bag body (1) are jointly provided with a guiding mechanism (3); The sealing assembly (2) comprises a clamping plate (21), the clamping plate (21) is sleeved on the top of the packaging bag body (1), and the front and rear side walls of the packaging bag body (1) are interference fit with the inner wall of the clamping plate (21), the clamping plate (21) is composed of two parts, namely a limit strip (211) and a support strip (212), and the two ends of the support strip (212) are respectively in contact with the two ends of the limit strip (211), a plurality of soft blocks (22) are fixedly installed and penetrated in the limit strip (211), and the spacing between two adjacent soft blocks (22) is equal, and the side of the soft block (22) close to the support strip (212) extends to the outside of the limit strip (211) and is coplanar with the inner wall of the limit strip (211), and the support strip (212) and the limit strip (211) are connected via a connecting mechanism (23).

2. A packaging bag for food vacuum packaging according to claim 1, characterized in that: Both ends of the limiting strip (211) are arranged in a U shape, and both left and right sides of the packaging bag body (1) are in contact with the limiting strip (211).

3. A packaging bag for food vacuum packaging according to claim 2, characterized in that: The outer wall of the clamping plate (21) is arranged in an arc shape, and the opening edges at both ends of the clamping plate (21) facing downward are arranged in an arc shape.

4. A packaging bag for food vacuum packaging according to claim 3, characterized in that: The interior of the soft block (22) is hollow and filled with air.

5. A packaging bag for food vacuum packaging according to claim 4, characterized in that: The guide mechanism (3) comprises a plurality of guide bars (31) having a semicircular cross-sectional shape, the plurality of guide bars (31) being relatively fixedly mounted on the front and rear side walls of the packaging bag body (1), a guide groove (33) being provided on the inner wall of the limit bar (211) at a position corresponding to the guide bar (31), and the guide bar (31) slidingly passes through the corresponding guide groove (33).

6. A packaging bag for food vacuum packaging according to claim 5, characterized in that: The guide strip (31) is a soft plastic strip, a limit block (32) is fixedly mounted on the top end of the guide strip (31), and the limit block (32) is fixedly connected to the packaging bag body (1).

7. A packaging bag for food vacuum packaging according to claim 6, characterized in that: The connecting mechanism (23) comprises two clamping blocks (232), and the bottom sides of both ends of the limiting strip (211) are provided with clamping grooves (231). The two clamping blocks (232) are relatively fixedly mounted on the left and right ends of the supporting strip (212), and the clamping blocks (232) are located in the corresponding clamping grooves (231) and in contact with the inner walls of the corresponding clamping grooves (231).

8. The packaging bag for food vacuum packaging according to claim 7, characterized in that: The top side of the clamping block (232) and the bottom opening edge of the clamping slot (231) are both arranged in an arc shape, and the bottom side of the clamping block (232) is coplanar with the bottom side of the support bar (212).

9. A packaging bag for food vacuum packaging according to claim 8, characterized in that: The front and rear side walls of the card slot (231) are both provided with storage slots (233), the inner wall of the opening end of the storage slot (233) is arranged in an arc shape, a positioning slot (234) is arranged at a position corresponding to the storage slot (233) on the card block (232), a semi-circular spring piece (235) is slidably mounted in the storage slot (233), and the middle part of the spring piece (235) is inserted into the corresponding positioning slot (234) and contacts the inner wall of the corresponding positioning slot (234).

Images