Distribution bag capable of freezing and refrigerating

Abstract

The utility model relates to the technical field of delivery bags, and discloses a delivery bag capable of freezing and refrigerating, which comprises a paper bag layer, an inner layer is adhered and connected to the inner side of the paper bag layer, an upper sealing strip is arranged at the upper end of the paper bag layer, side sealing strips are arranged on two sides of the upper sealing strip, and a sealing bag is adhered and connected to the inner wall of the inner layer. According to the delivery bag capable of being frozen and refrigerated, before articles needing to be frozen and refrigerated need to be stored, the delivery bag is firstly put into freezing equipment, sodium sulfate decahydrate in the liquid storage bag is subjected to phase change solidification at low temperature, the articles are put into the delivery bag, and the sodium sulfate decahydrate in the liquid storage bag can be gradually melted to release cold energy when the temperature rises; the inner buffer layer made of kraft paper is provided with a buffer convex surface and a buffer concave surface and has a certain buffer effect, and the buffer air bag has high elasticity and high toughness and is matched with the inner buffer layer and the liquid storage bag, so that external impact force can be effectively buffered in the distribution process, and articles in the bag are protected from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of delivery bag technology, specifically a delivery bag that can be frozen and refrigerated. Background Technology

[0002] In modern society, with the rapid development of e-commerce and the increasing demand for delivery of special items such as fresh food, frozen food, and medicine, higher requirements are placed on efficient and reliable delivery packaging. Traditional delivery bags are usually made of simple paper or plastic materials. Although they are lightweight, they are obviously insufficient in terms of refrigeration and freezing functions. For items that need to be kept at low temperatures, such as fresh fruits, seafood, ice cream, and vaccines, it is often difficult to maintain a stable low temperature environment during delivery. Therefore, a delivery bag that can be frozen and refrigerated is proposed.

[0003] Chinese Utility Model Patent Publication No. CN 219822249 U discloses: an easy-to-open takeaway bag. This easy-to-open takeaway bag involves closing the bag opening, then covering the opening with a sealing strip, and finally attaching the hook side of a first Velcro closure to the rough side of the first Velcro closure to seal the opening. Two side sealing strips are then wrapped around both sides of the takeaway bag, and the hook sides of the two side sealing strips are attached to the rough sides of the second Velcro closure. The sealing strips and side sealing strips completely cover the bag opening, improving its airtightness. The Velcro connection facilitates opening the takeaway bag. However, this easy-to-open takeaway bag does not have refrigeration or freezing functions and cannot be used to deliver items that require low temperatures. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a delivery bag that can be frozen and refrigerated, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a delivery bag that can be frozen and refrigerated, including a paper bag layer, an inner layer attached to the inner side of the paper bag layer, an upper seal strip provided at the upper end of the paper bag layer, side seal strips provided on both sides of the upper seal strip, and a sealed bag attached to the inner wall of the inner layer;

[0006] The paper bag layer includes an outer layer and a heat insulation layer, and the heat insulation layer is adhered to the inner wall of the outer layer;

[0007] The inner layer includes an outer buffer layer, a buffer airbag, an air tube, a heat insulation layer, a freezing layer, a liquid reservoir, an inner buffer layer, a buffer convex surface, and a buffer concave surface. Multiple buffer airbags are disposed inside the outer buffer layer, and an air tube is disposed between adjacent buffer airbags. A freezing layer is disposed inside the outer buffer layer, and a liquid reservoir is disposed inside the freezing layer. An inner buffer layer is disposed inside the freezing layer, and a buffer convex surface is disposed inside the inner buffer layer. A buffer concave surface is disposed outside the inner buffer layer.

[0008] Preferably, the outer layer is made of kraft paper with a polyethylene film pasted on the back, and the heat insulation layer is made of aerogel felt.

[0009] Through the above technical solution, the polyethylene film pasted on the back of the kraft paper gives the outer layer both the toughness and durability of kraft paper and the waterproof function of polyethylene film, effectively preventing external moisture from entering the delivery bag. The heat insulation layer made of aerogel felt can greatly reduce heat transfer and further enhance the waterproof performance, providing good protection for the items inside the bag.

[0010] Preferably, the inner sides of the upper seal and the side seal are provided with adhesive.

[0011] With the above technical solution, the inner sides of the top seal and side seal are provided with adhesive. When the delivery bag needs to be sealed, the top seal is folded over to seal the opening of the delivery bag, and the side seal is folded over and adhered to the surface of the paper bag layer to seal the gaps on both sides of the top seal and the paper bag layer. This can ensure the airtightness of the delivery bag, prevent the leakage of cold air inside the bag, and effectively maintain the freezing or refrigeration effect.

[0012] Preferably, the outer buffer layer, the buffer airbag, and the air tube are all made of thermoplastic polyurethane material.

[0013] Through the above technical solution, the cushioning airbag made of thermoplastic polyurethane material has high elasticity and high toughness, which can effectively buffer external impact during delivery and protect the items inside the bag from damage.

[0014] Preferably, the insulation layer is made of polyurethane foam board.

[0015] Through the above technical solution, the insulation layer made of polyurethane foam board has excellent heat insulation performance, which can effectively prevent external heat from entering the bag and maintain the stability of freezing or refrigeration temperature.

[0016] Preferably, the reservoir is filled with sodium sulfate decahydrate, the inner buffer layer is made of kraft paper, and the buffer convex and buffer concave surfaces are formed by a stamping process.

[0017] The above technical solution incorporates a liquid storage bladder. Before storing items requiring freezing or refrigeration, the delivery bag is placed into the freezing equipment. The sodium sulfate decahydrate in the liquid storage bladder undergoes a phase change and solidifies at low temperatures. When the items are placed into the delivery bag, the sodium sulfate decahydrate in the liquid storage bladder gradually melts and releases cold energy as the temperature rises, maintaining a low temperature for a long time. This results in good refrigeration and freezing effects. The inner buffer layer, made of kraft paper, has both convex and concave buffer surfaces, providing a certain degree of cushioning.

[0018] Preferably, two identical sealed bags are provided.

[0019] The above technical solution incorporates two sealed bags, dividing the delivery bag into three spaces for storing different items. The sealed bags also enhance the waterproof performance of the delivery bag, further protecting the items inside.

[0020] Compared with the prior art, this utility model provides a delivery bag that can be frozen and refrigerated, which has the following beneficial effects:

[0021] 1. This freezer-freezing delivery bag features a kraft paper backing with a polyethylene film, combining the toughness and durability of kraft paper with the waterproof function of polyethylene film to effectively prevent external moisture from entering the bag. The inner cushioning layer, made of kraft paper, has both convex and concave cushioning surfaces for added protection. The bag uses kraft paper both inside and out, ensuring uniform material quality and an attractive design. The aerogel felt insulation layer significantly reduces heat transfer and further enhances waterproofing, providing excellent protection for the contents. The thermoplastic polyurethane cushioning airbags are highly elastic and resilient, working in conjunction with the inner cushioning layer and liquid reservoir to effectively buffer external impacts during delivery, protecting the contents from damage. The polyurethane foam insulation layer provides excellent thermal insulation, effectively preventing external heat from entering the bag and maintaining stable freezing or refrigeration temperatures.

[0022] 2. This freezer-freeze delivery bag is equipped with a liquid reservoir. Before storing items requiring freezing or refrigeration, the delivery bag is placed in a freezing device. The sodium sulfate decahydrate in the reservoir undergoes a phase change and solidifies at low temperatures. When items are placed in the delivery bag, the sodium sulfate decahydrate in the reservoir gradually melts and releases cold energy as the temperature rises, maintaining a low temperature for an extended period. To seal the delivery bag, the top seal is folded over to seal the opening, and the side seals are folded over and adhered to the surface of the paper bag layer, sealing the gaps between the top seal and the two sides of the paper bag layer. This ensures the airtightness of the delivery bag, prevents cold air leakage, and effectively maintains the freezing or refrigeration effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the paper bag layer of this utility model with the sealing strip attached. Figure 1 ;

[0024] Figure 2 This is a three-dimensional structural diagram of the paper bag layer of this utility model with the sealing strip attached. Figure 2 ;

[0025] Figure 3 This is a schematic diagram showing the disassembled structure of the paper bag layer and sealing bag of this utility model;

[0026] Figure 4 This is a schematic diagram of the disassembled structure of the paper bag layer and inner layer of this utility model. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of the disassembled structure of the paper bag layer and inner layer of this utility model. Figure 2 .

[0028] The components are: 1. Paper bag layer; 101. Outer layer; 102. Heat insulation layer; 2. Inner layer; 201. Outer buffer layer; 202. Buffer airbag; 203. Air tube; 204. Thermal insulation layer; 205. Freezing layer; 206. Liquid reservoir; 207. Inner buffer layer; 208. Buffer convex surface; 209. Buffer concave surface; 3. Top seal; 4. Side seal; 6. Sealed bag. Detailed Implementation

[0029] 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.

[0030] Example 1: As Figure 1-5 As shown, the present invention provides a frozen and refrigerated delivery bag, including a paper bag layer 1, an inner layer 2 pasted to the inside of the paper bag layer 1, an upper seal 3 at the top of the paper bag layer 1, side seals 4 on both sides of the upper seal 3, and a sealed bag 6 pasted to the inner wall of the inner layer 2.

[0031] The paper bag layer 1 includes an outer layer 101 and a heat insulation layer 102, with the heat insulation layer 102 adhered to the inner wall of the outer layer 101.

[0032] The inner layer 2 includes an outer buffer layer 201, a buffer airbag 202, an air tube 203, a heat insulation layer 204, a freezing layer 205, a liquid reservoir 206, an inner buffer layer 207, a buffer convex surface 208, and a buffer concave surface 209. Multiple buffer airbags 202 are provided inside the outer buffer layer 201, and an air tube 203 is provided between adjacent buffer airbags 202. A freezing layer 205 is provided inside the outer buffer layer 201, a liquid reservoir 206 is provided inside the freezing layer 205, an inner buffer layer 207 is provided inside the freezing layer 205, a buffer convex surface 208 is provided inside the inner buffer layer 207, and a buffer concave surface 209 is provided outside the inner buffer layer 207.

[0033] Specifically, the outer layer 101 is made of kraft paper with a polyethylene film glued to the back, and the insulation layer 102 is made of aerogel felt. The advantages are that the kraft paper with a polyethylene film glued to the back gives the outer layer 101 both the toughness and durability of kraft paper and the waterproof function of polyethylene film, effectively preventing external moisture from entering the delivery bag. The aerogel felt insulation layer 102 greatly reduces heat transfer and further enhances waterproof performance, providing excellent protection for the items inside the bag.

[0034] Specifically, the inner sides of the top seal 3 and the side seal 4 are provided with adhesive. The advantage is that, with adhesive on the inner sides of the top seal 3 and the side seal 4, when the delivery bag needs to be sealed, the top seal 3 is folded over to seal the opening of the delivery bag, and the side seal 4 is folded over and adhered to the surface of the paper bag layer 1, sealing the gaps on both sides of the top seal 3 and the paper bag layer 1. This ensures the airtightness of the delivery bag, prevents cold air leakage from inside the bag, and effectively maintains the freezing or refrigeration effect.

[0035] Example 2: Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0036] Specifically, the outer cushioning layer 201, the cushioning airbag 202, and the air tube 203 are all made of thermoplastic polyurethane. The advantage is that the cushioning airbag 202, made of thermoplastic polyurethane, has high elasticity and high toughness, effectively cushioning external impacts during delivery and protecting the items inside the bag from damage.

[0037] Specifically, the insulation layer 204 is made of polyurethane foam board. The advantage is that the polyurethane foam insulation layer 204 has excellent thermal insulation properties, effectively preventing external heat from entering the bag and maintaining a stable freezing or refrigeration temperature.

[0038] Specifically, the reservoir 206 is filled with sodium sulfate decahydrate, and the inner buffer layer 207 is made of kraft paper. The buffer convex surface 208 and buffer concave surface 209 are formed by a stamping process. The advantage is that, with the reservoir 206, before storing items requiring freezing or refrigeration, the delivery bag is first placed in the freezing equipment. The sodium sulfate decahydrate in the reservoir 206 undergoes a phase change and solidifies at low temperatures. When the items are placed in the delivery bag, the sodium sulfate decahydrate in the reservoir 206 gradually melts and releases cold energy as the temperature rises, maintaining a low temperature for a long time, resulting in good refrigeration and freezing effects. The inner buffer layer 207, made of kraft paper, has buffer convex surfaces 208 and buffer concave surfaces 209, which provide a certain degree of cushioning.

[0039] Specifically, there are two identical sealing bags 6. The advantage is that by setting up two sealing bags 6, the inside of the delivery bag is divided into three spaces, which can be used to store different items. The sealing bags 6 also increase the waterproof performance of the delivery bag, further protecting the items inside.

[0040] Working principle: Before storing items requiring freezing or refrigeration, the delivery bag is placed into the freezing equipment. The sodium sulfate decahydrate in the liquid reservoir 206 undergoes a phase change and solidifies at low temperatures. When items are placed in the delivery bag, the sodium sulfate decahydrate in the liquid reservoir 206 gradually melts and releases cold energy as the temperature rises, maintaining a low temperature for an extended period. To seal the delivery bag, the top seal 3 is folded over to seal the opening, and the side seal 4 is folded and adhered to the surface of the paper bag layer 1, sealing the gaps between the top seal 3 and the two sides of the paper bag layer 1. This ensures the airtightness of the delivery bag, preventing cold air leakage and effectively maintaining freezing or refrigeration effects. The polyethylene film pasted on the back of the kraft paper gives the outer layer 101 both the toughness and durability of kraft paper and the waterproof function of the polyethylene film, effectively preventing... To prevent external moisture from entering the delivery bag, the inner cushioning layer 207, made of kraft paper, is equipped with a cushioning convex surface 208 and a cushioning concave surface 209, which provides a certain cushioning effect. The delivery bag uses kraft paper material both inside and out, ensuring uniform material and an aesthetically pleasing design. The heat insulation layer 102, made of aerogel felt, can greatly reduce heat transfer and further enhance waterproof performance, providing good protection for the items inside the bag. The cushioning airbag 202, made of thermoplastic polyurethane material, has high elasticity and high toughness. Together with the inner cushioning layer 207 and the liquid storage bladder 206, it can effectively buffer external impacts during delivery, protecting the items inside the bag from damage. The heat insulation layer 204, made of polyurethane foam board, has excellent heat insulation performance, effectively preventing external heat from entering the bag and maintaining a stable freezing or refrigeration temperature.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A refrigeratable and freezable delivery bag comprising a paper bag layer (1), characterized in that: The paper bag layer (1) is connected with an inner layer (2) on the inner side, the upper end of the paper bag layer (1) is provided with an upper sealing strip (3), the two sides of the upper sealing strip (3) are provided with side sealing strips (4), and the inner wall of the inner layer (2) is connected with a sealing bag (6); The paper bag layer (1) comprises an outer layer (101) and a heat insulation layer (102), and the inner wall of the outer layer (101) is connected with the heat insulation layer (102); The inner layer (2) can be provided with the following features according to the use: an outer buffer layer (201), a buffer air bag (202), an air pipe (203), a temperature insulation layer (204), a freezing layer (205), a liquid storage bag (206), an inner buffer layer (207), a buffer convex surface (208) and a buffer concave surface (209), the inner side of the outer buffer layer (201) is provided with a plurality of buffer air bags (202), the adjacent buffer air bags (202) are provided with air pipes (203), the inner side of the outer buffer layer (201) is provided with a freezing layer (205), the inner side of the freezing layer (205) is provided with a liquid storage bag (206), the inner side of the freezing layer (205) is provided with an inner buffer layer (207), the inner side of the inner buffer layer (207) is provided with a buffer convex surface (208), and the outer side of the inner buffer layer (207) is provided with a buffer concave surface (209).

2. A freeze-able chill-able delivery bag according to claim 1, wherein: The outer layer (101) is made of kraft paper with polyethylene film pasted on the back, and the heat insulation layer (102) is made of aerogel felt.

3. A freeze-able chill-able delivery bag according to claim 1, wherein: The inner side of the upper sealing strip (3) and the side sealing strip (4) is provided with back glue.

4. A freeze-able chill-able delivery bag according to claim 1, wherein: The outer buffer layer (201), the buffer air bag (202) and the air pipe (203) are all made of thermoplastic polyurethane material.

5. A freeze-able chill-able delivery bag according to claim 1, wherein: The temperature insulation layer (204) is made of polyurethane foam board.

6. A freeze-able chill-able delivery bag according to claim 1, wherein: The liquid storage bag (206) is filled with sodium sulfate decahydrate, the inner buffer layer (207) is made of kraft paper, and the buffer convex surface (208) and the buffer concave surface (209) are made by stamping process.

7. A freeze-able chill-able delivery bag according to claim 1, wherein: The sealing bag (6) is provided with two same ones.

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