Packaging bag with heat preservation function

Abstract

The utility model relates to a packaging bag with a heat preservation function, which comprises a bag body and handles located on the front side and the rear side of the bag body, a containing cavity is formed in the bag body, the bag body further comprises a heat preservation layer, the heat preservation layer is located in the containing cavity and fixedly connected with the inner wall of the bag body, and the packaging bag further comprises a reinforcing sleeve located in the circumferential direction of the bag body. The reinforcing sleeve is made of materials prone to deformation, the bag body comprises a sealing paperboard, the sealing paperboard is rotationally installed on the bag body so as to be detachably connected with the bag body, and through grooves are formed in the positions, corresponding to the handles, of the reinforcing sleeve. By the adoption of the scheme, the sealing paperboard is rotated to be connected with the bag body, then sealing is achieved, the reinforcing sleeve is arranged, and connection between the sealing paperboard and the bag body is reinforced.

Description

Technical Field

[0001] This utility model relates to packaging bags, and more particularly to packaging bags with heat preservation function. Background Technology

[0002] For fresh and frozen foods that require maintaining a suitable temperature to prolong their freshness, the bag is usually covered with aluminized film or aluminum foil, which have good reflective properties, to achieve insulation.

[0003] Most common insulated packaging bags are sealed using self-sealing strips, Velcro, etc., which allows the items that need to be insulated to be stably placed inside the bag and prevents outside air and heat from entering the bag. However, self-sealing strips cannot be repeatedly opened and closed, while detachable Velcro can easily misalign under certain external forces, allowing outside air to enter.

[0004] Therefore, how to make a heat-insulating packaging bag that can be opened and closed multiple times while being difficult to open when sealed so that the item can be stably placed inside the bag for heat preservation has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a heat-insulating packaging bag that achieves a reinforced connection between the sealing cardboard and the bag body by rotating the sealing cardboard to connect with the bag body, thereby achieving sealing, and then inserting a reinforcing sleeve to achieve a reinforced connection between the sealing cardboard and the bag body.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a bag body and handles located on the front and rear sides of the bag body. The bag body has a receiving cavity. The bag body also includes an insulation layer located within the receiving cavity and fixedly connected to the inner wall of the bag body. It also includes a reinforcing sleeve located circumferentially around the bag body. The reinforcing sleeve is made of a material prone to deformation. The bag body includes a sealing cardboard, which is rotatably mounted on the bag body for detachable connection. The reinforcing sleeve has a passage groove corresponding to each handle.

[0007] The present invention is further configured such that: the bag body includes an opening located above the receiving cavity; the sealing cardboard includes a covering section with the same shape and size as the opening and a connecting section perpendicular to the length direction of the covering section; a first Velcro fastener is provided on the connecting section; and a second Velcro fastener is provided on the bag body located on the rotation trajectory of the connecting section.

[0008] The present invention is further configured such that: the covering section includes a contact block that fits into the bag body, and the bag body is provided with a positioning protrusion for inserting the contact block.

[0009] The present invention is further configured such that: the reinforcing sleeve includes an upper connecting part, a lower connecting part, and a connecting strip located between the upper connecting part and the lower connecting part; the upper connecting part is hollow inside and its inner wall abuts against the first contact block; the lower connecting part is sleeved on the bottom of the bag body; and each of the passage grooves is located in the upper connecting part.

[0010] The present invention is further configured such that: a connecting frame is integrally formed above the lower connecting part of the bag body; a plurality of connecting blocks made of a material that is prone to deformation are protruding upward from the lower connecting part; each connecting block includes a connecting post and a connecting hemisphere; the bottom diameter of each connecting hemisphere is larger than the diameter of the corresponding connecting post; the connecting frame is provided with a connecting groove corresponding to each connecting post; the diameter of each connecting groove is larger than the connecting post but smaller than the bottom of the connecting hemisphere; and the bottom surface of each connecting hemisphere abuts against the upper surface of the connecting frame.

[0011] The present invention is further configured such that: the upper connecting part is fixedly installed with limiting plates on both the left and right sides of each through groove, and the inner side of each limiting plate abuts against the handle.

[0012] The present invention is further configured to include several covering strips, each covering strip extending horizontally along its length and located between each limiting plate, with the bottom surface of each covering strip abutting against the top surface of the covering section.

[0013] By employing the above technical solution, after placing the item requiring insulation into the receiving cavity, the sealing cardboard is folded over to connect with the bag body. Then, a reinforcing sleeve is fitted around the circumference of the bag body. Since the handle is inserted into a slot on the reinforcing sleeve, the relative position of the reinforcing sleeve and the bag body is determined, ensuring the reinforcing sleeve is stably positioned around the circumference of the bag. Because the reinforcing sleeve presses down on the sealing cardboard, it can be stably folded and connected to the bag body without external force, preventing external gas and heat from entering the receiving cavity. Furthermore, since the sealing cardboard can be detachably connected to the bag body, it can be opened and closed repeatedly. When it is necessary to remove the items in the containment cavity, the reinforcing sleeve must first be removed from the circumference of the bag body, thereby separating the sealing cardboard from the bag body and then removing the items in the containment cavity. Therefore, the setting of the reinforcing sleeve and the sealing cardboard enables the top seal of the insulated bag to be repeatedly opened and closed, while the top can be stably closed after being filled with items and will not be accidentally opened, thus stably achieving the heat preservation effect on the items in the containment cavity. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is an assembly drawing illustrating a specific embodiment of the present utility model;

[0016] Figure 2 This is an exploded view of the bag body and the reinforcing sleeve in this utility model;

[0017] Figure 3 This is a cross-sectional view of the present invention from left to right;

[0018] Figure 4 This is a cross-sectional view of the present invention from front to back;

[0019] Figure 5 for Figure 3 Enlarged view of A in the middle;

[0020] Figure 6 for Figure 3 A magnified view of B in the middle.

[0021] In the diagram: 1-bag body, 11-accommodating cavity, 12-insulation layer, 13-sealing cardboard, 131-covering section, 132-connecting section, 1321-first Velcro, 1322-contact block, 14-second Velcro, 15-positioning protrusion, 16-connecting frame, 161-connecting groove;

[0022] 2-Handle;

[0023] 3-Reinforcing sleeve, 31-Pass groove, 32-Upper connecting part, 321-Limiting plate, 33-Lower connecting part, 331-Connecting insert, 3311-Connecting post, 3312-Connecting hemisphere, 34-Connecting strip;

[0024] 4-Covering strip. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-6As shown, this utility model discloses a packaging bag with heat preservation function, including a bag body 1 made of cardboard, polypropylene and other materials that is prone to deformation, and handles 2 located on the front and back sides of the bag body 1. The handles 2 can be folded at will. The bag body 1 is provided with a receiving cavity 11. The bag body 1 also includes a heat preservation layer 12 made of aluminized film. The heat preservation layer 12 is located in the receiving cavity 11 and is fixedly connected to the inner wall of the bag body 1. By placing the item that needs to be kept warm into the receiving cavity 11 of the bag body 1, the top of the bag body 1 is sealed (usually by means of adhesive, Velcro, etc., which are existing technologies and will not be described in detail here), thereby achieving heat preservation of the item. It also includes a reinforcing sleeve 3 located around the circumference of the bag body 1. The reinforcing sleeve 3 is made of easily deformable materials such as rubber and cardboard. The bag body 1 includes a sealing cardboard 13, so the sealing cardboard 13 can also easily deform. The sealing cardboard 13 is rotatably mounted on the bag body 1 to make it detachably connected to the bag body 1. The upward projection of the sealing cardboard 13 falls on the reinforcing sleeve 3. The reinforcing sleeve 3 is provided with a through groove 31 corresponding to each handle 2. Each handle 2 can be folded relative to the bag body 1. After placing the item that needs to be kept warm into the receiving cavity 11, the sealing cardboard 13 is folded to complete the connection with the bag body 1. Then, the reinforcing sleeve 3 is put on the circumference of the bag body 1. At this time, since the handle 2 will be inserted into the through groove 31 on the reinforcing sleeve 3, the relative position of the reinforcing sleeve 3 and the bag body 1 is determined, so that the reinforcing sleeve 3 can be stably positioned. The bag body 1 is circumferentially sealed, and because the sealing cardboard 13 is held in place by the reinforcing sleeve 3, the sealing cardboard 13 can be stably folded and connected to the bag body 1 without external force. External gas and heat cannot enter the containing cavity 11. Since the sealing cardboard 13 can be detachably connected to the bag body 1, it can be opened and closed repeatedly. When it is necessary to remove the items in the containing cavity 11, the reinforcing sleeve 3 must first be removed from the circumference of the bag body 1, so that the sealing cardboard 13 can be separated from the bag body 1, and then the items in the containing cavity 11 can be removed. Therefore, the setting of the reinforcing sleeve 3 and the sealing cardboard 13 enables the top of the bag body 1 with heat preservation function to be repeatedly opened and closed, while the top can be stably closed after being filled with items and will not be accidentally opened, thereby stably achieving the heat preservation effect on the items in the containing cavity 11.

[0027] The bag body 1 includes an opening located above the receiving cavity 11. The sealing cardboard 13 includes a covering section 131 of the same shape and size as the opening and a connecting section 132 perpendicular to the length direction of the covering section 131. A first Velcro 1321 is provided on the connecting section 132. A second Velcro 14 is provided on the bag body 1 along the rotation trajectory of the connecting section 132. Due to the presence of the first Velcro 1321 on the connecting section 132, after the item to be insulated is placed into the bag body 1, the sealing cardboard 13 is folded over, thus allowing the sealing cardboard 13 to... The first Velcro 1321 can be attached to the second Velcro 14 on the bag body 1, thereby achieving the sealing of the top opening of the bag body 1 by the sealing cardboard 13. Then, the reinforcing sleeve 3 is put on the bag body 1 to further increase the pressure on the sealing cardboard 13, so that the sealing cardboard 13 can stably seal the top of the bag body 1 without the action of external force. When it is necessary to take the item out of the receiving cavity 11 of the bag body 1, after removing the reinforcing sleeve 3, by applying force to the sealing cardboard 13, the first Velcro 1321 and the second Velcro 14 are misaligned, thereby allowing the item to be taken out.

[0028] The covering section 131 includes a contact block 1322 that fits into the bag body 1. The bag body 1 is provided with a positioning protrusion 15 for inserting the contact block 1322. During the process of folding the sealing cardboard 13 to seal the upper end of the bag body 1, the contact block 1322 located on the covering section 131 of the sealing cardboard 13 will fall into the outside of the bag body 1, thereby allowing the positioning protrusion 15 to insert the contact block 1322, which further improves the stability of the covering section 131 above the bag body 1 and improves the sealing performance when the bag body 1 is connected to the sealing cardboard 13.

[0029] Preferably, the reinforcing sleeve 3 includes an upper connecting part 32, a lower connecting part 33, and a connecting strip 34 located between the upper connecting part 32 and the lower connecting part 33. The upper connecting part 32 is hollow inside and its inner wall abuts against the first contact block 1322. The lower connecting part 33 is fitted onto the bottom of the bag body 1. Each of the through grooves 31 is located on the upper connecting part 32. Since the inner wall of the upper connecting part 32 abuts against the first contact block 1322 and the lower connecting part 33 is fitted onto the bottom of the bag body 1, after the reinforcing sleeve 3 is fitted onto the bag body 1, the reinforcing sleeve 3 will not separate from the bag body 1 without the action of external force, thereby achieving the pressing of the upper connecting part 32 on the sealing cardboard 13, so that the bag body 1 can stably keep the contents in the receiving cavity 11 warm without the action of external force.

[0030] The bag body 1 is integrally formed with a connecting frame 16 above the lower connecting part 33. The lower connecting part 33 protrudes upwards with several connecting blocks 331 made of a material prone to deformation. Each connecting block 331 includes a connecting post 3311 and a connecting hemisphere 3312. The bottom diameter of each connecting hemisphere 3312 is larger than the diameter of the corresponding connecting post 3311. The connecting frame 16 is provided with connecting grooves 161 corresponding to each connecting post 3311. The diameter of each connecting groove 161 is larger than that of the connecting post 3311 but smaller than the bottom of the connecting hemisphere 3312. The bottom surface of each connecting hemisphere 3312... The upper surface of the connecting frame 16 abuts against the reinforcing sleeve 3. After the reinforcing sleeve 3 is fitted onto the bag body 1, each connecting block 331 on the lower connecting part 33 will be inserted into the connecting frame 16. Since the bottom diameter of each connecting hemisphere 3312 is larger than the diameter of the corresponding connecting post 3311, each connecting hemisphere 3312 needs to forcibly pass over the corresponding connecting groove 161. At this time, the bottom surface of each connecting hemisphere 3312 abuts against the upper surface of the connecting frame 16, thereby making the connecting frame 16 and the lower connecting part 33 stably connected together. Thus, without the action of external force, the reinforcing sleeve 3 can be stably fitted around the circumference of the bag body 1.

[0031] Preferably, the upper connecting part 32 is fixedly installed with limiting plates 321 on both the left and right sides of each through groove 31. The inner side of each limiting plate 321 abuts against the handle 2. Since the reinforcing sleeve 3 is fitted around the bag body 1, the inner side of each limiting plate 321 abuts against the handle 2. Therefore, the handle 2 and the first contact block 1322 can facilitate the determination of the relative position between the upper connecting part 32 and the bag body 1. Furthermore, the installation of limiting plates 321 on both sides of the through groove 31 can effectively limit the range of motion of the handle 2 and prevent it from bending or deforming excessively.

[0032] Preferably, it also includes a plurality of covering strips 4, each covering strip 4 extending in the left and right direction and located between each limiting plate 321. The bottom surface of each covering strip 4 abuts against the top surface of the covering section 131. Since each covering strip 4 is located between each limiting plate 321, the presence of each covering strip 4 can increase the pressing area between the reinforcing sleeve 3 and the sealing cardboard 13.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A packaging bag with heat preservation function, comprising a bag body and handles located on the front and rear sides of the bag body, wherein the bag body is provided with a receiving cavity, and the bag body further comprises a heat preservation layer, the heat preservation layer being located within the receiving cavity and fixedly connected to the inner wall of the bag body, characterized in that: It also includes a reinforcing sleeve located around the circumference of the bag body, the reinforcing sleeve being made of a material that is prone to deformation, the bag body including a sealing cardboard, the sealing cardboard being rotatably mounted on the bag body to be detachably connected to the bag body, and the reinforcing sleeve having a passage groove corresponding to each handle.

2. The packaging bag with heat preservation function according to claim 1, characterized in that: The bag body includes an opening located above the receiving cavity, and the sealing cardboard includes a covering section with the same shape and size as the opening and a connecting section perpendicular to the length direction of the covering section. A first Velcro fastener is provided on the connecting section, and a second Velcro fastener is provided on the bag body located on the rotation trajectory of the connecting section.

3. The packaging bag with heat preservation function according to claim 2, characterized in that: The covering section includes a contact block that fits into the bag body, and the bag body is provided with positioning protrusions for inserting the contact block.

4. The packaging bag with heat preservation function according to claim 3, characterized in that: The reinforcing sleeve includes an upper connecting part, a lower connecting part, and a connecting strip located between the upper connecting part and the lower connecting part. The upper connecting part is hollow inside and its inner wall abuts against the first contact block. The lower connecting part is fitted onto the bottom of the bag body, and each of the passage slots is located in the upper connecting part.

5. The packaging bag with heat preservation function according to claim 4, characterized in that: The bag body is integrally formed with a connecting frame above the lower connecting part. The lower connecting part has several connecting blocks made of a material that is prone to deformation protruding upwards. Each connecting block includes a connecting post and a connecting hemisphere. The bottom diameter of each connecting hemisphere is larger than the diameter of the corresponding connecting post. The connecting frame is provided with a connecting groove corresponding to each connecting post. The diameter of each connecting groove is larger than the diameter of the connecting post but smaller than the bottom of the connecting hemisphere. The bottom surface of each connecting hemisphere abuts against the upper surface of the connecting frame.

6. The packaging bag with heat preservation function according to claim 4, characterized in that: The upper connecting part is fixedly installed with limit plates on the left and right sides of each through groove, and the inner side of each limit plate abuts against the handle.

7. The packaging bag with heat preservation function according to claim 6, characterized in that: It also includes several covering strips, each of which extends horizontally along its length and is located between each limiting plate, with the bottom surface of each covering strip abutting against the top surface of the covering section.

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