Insulating bag

Abstract

The utility model discloses a kind of thermal insulation bags, thermal insulation bag includes thermal insulation composite film, the thermal insulation composite film hot bonding cooperation together to form bag body, the bag body has bag mouth, further include CPP heat-seal sheet, the bag wall of bag body is equipped with handle hole, the CPP heat-seal sheet hot bonding is on the inner wall of bag body, and the CPP heat-seal sheet is between bag bottom and handle hole, and the sidewall of the two sides of bag body is all provided with CPP heat-seal sheet, the thickness of the CPP heat-seal sheet is 2mm~3mm.This kind of thermal insulation bag has following beneficial effects: bag is sealed by the way of heat-seal by CPP heat-seal sheet, the sealing of bag mouth still has good sealing even when water immersion, can ensure the integrity of sealing, still can have good thermal insulation performance when rainy day.

Description

Technical Field

[0001] This utility model relates to the field of packaging products, and in particular to an insulated bag. Background Technology

[0002] Insulated bags are a common takeout item. Many drinks need to be packed in insulated bags after preparation before being delivered by delivery personnel. Patent publication document CN213474051U discloses a takeout bag that can be sealed using adhesive strips (actually a long strip of double-sided tape). However, there is a problem with this takeout bag in actual use. Since the sealing method is based on adhesive strips, and adhesive strips are very sensitive to water, water will cause the adhesive seal to fail. Therefore, this type of insulated bag is prone to sealing failure in rainy weather, and its reliability is relatively poor. Utility Model Content

[0003] This utility model addresses the above-mentioned problems by proposing an insulated bag.

[0004] The technical solution adopted by this utility model is as follows:

[0005] An insulated bag includes an insulated composite film, which is thermally bonded together to form a bag body. The bag body has a bag opening and also includes a CPP (cast polypropylene) heat-sealing sheet. A handle hole is provided on the bag wall of the bag body. The CPP heat-sealing sheet is thermally bonded to the inner wall of the bag body and is located between the bottom of the bag and the handle hole. CPP heat-sealing sheets are provided on both side walls of the bag body. The thickness of the CPP heat-sealing sheet is 2mm to 3mm.

[0006] In this type of insulated bag, the bag body is formed by heat bonding of an insulating composite film. First, a CPP heat-sealing sheet is heat-bonded onto the insulating composite film. After the insulating composite film is made into the bag body, a handle hole is made on the bag body, thus completing the bag body formation. When it is necessary to fill the bag, the items are put into the bag body, and then the CPP heat-sealing sheet is heated on the outside of the bag body using a heat-sealing machine (or other equipment). Then, the two CPP heat-sealing sheets are bonded together, thus completing the sealing of the bag body. Since the bag body itself is made of insulating composite film by heat bonding, and the bag opening is also formed by heat bonding two CPP heat-sealing sheets, the seal at the bag opening of this type of insulated bag is heat-sealed. The sealing performance of the entire bag opening is relatively good. Even when immersed in water, the seal at the bag opening will not be damaged. Therefore, when using this type of insulated bag to deliver takeout food, it can still ensure good sealing in rainy weather, ensuring that the entire insulated bag has a good insulation effect.

[0007] Specifically, in this type of insulated bag, the adhesion strength of the CPP heat-sealing sheet on the inner wall of the bag can be adjusted as needed. When packaging inexpensive meals, the adhesion strength of the CPP heat-sealing sheet is relatively low. After heat sealing, the CPP heat-sealing sheet can be detached from the inner wall of the bag by pulling the bag walls from both sides, thus making the entire insulated bag reusable. When this type of insulated bag is used to package high-priced meals, the adhesion strength of the CPP heat-sealing sheet on the inner wall is relatively high. After heat sealing, pulling the bag walls from both sides cannot pull the CPP heat-sealing sheet off the inner wall of the bag. Only by breaking open the bag can the sheet be removed.

[0008] In summary, this type of thermal insulation bag is sealed by heat sealing with CPP heat-sealing film. The seal at the bag opening maintains good sealing performance even when immersed in water, ensuring the integrity of the seal and maintaining good thermal insulation performance in rainy weather.

[0009] Optionally, a rigid plastic bottom frame is also included, which is disposed inside the bag and located at the bottom of the bag. The bottom frame supports the inner wall of the bag and is rectangular in shape.

[0010] A rigid plastic frame is installed at the bottom of the bag to allow it to open and make it easier to put items in.

[0011] Optionally, the handle hole is oval-shaped, and the periphery of the handle hole wall is coated with a rubber ring layer.

[0012] The purpose of applying a rubber ring around the edge of the handle hole is to reduce the rough feel when carrying it.

[0013] Optionally, the CPP heat-sealing sheet is a square-shaped CPP heat-sealing sheet.

[0014] Optionally, the heat-insulating composite film includes a non-woven fabric layer, an OPP (oriented polypropylene) film layer, and a CPP film layer. The CPP film layer and the OPP film layer are located on both sides of the non-woven fabric layer, with the OPP film layer located on the outer wall of the bag and the CPP film layer located on the inner wall of the bag. The CPP heat-sealing sheet is thermally bonded to the CPP film layer.

[0015] When the inner wall of the bag is a CPP film layer, a CPP heat-sealing sheet can be installed on only one side of the bag wall to complete the subsequent heat sealing. The composite film is made of non-woven fabric layer, OPP film layer and CPP film layer to ensure that the entire insulated bag has good heat insulation performance.

[0016] Optionally, it also includes an aluminized OPP film, wherein the aluminized OPP film is disposed between the CPP film layer and the non-woven fabric layer, an adhesive layer is disposed between the aluminized OPP film and the CPP film layer, and a first PE coating layer is disposed between the aluminized OPP film and the non-woven fabric layer.

[0017] The purpose of adding the aluminized OPP film is to further improve the thermal insulation performance of the entire thermal insulation composite film.

[0018] Optionally, the thickness of the adhesive layer is 2 micrometers, the thickness of the first PE coating layer is 15 micrometers, and the thickness of the aluminized OPP film is 12 micrometers.

[0019] Optionally, a second PE coating layer is provided between the nonwoven fabric layer and the OPP film layer, and an ink printing layer is provided on the OPP film layer, with the ink printing layer located between the second PE coating layer and the OPP film layer.

[0020] Optionally, the thickness of the ink printing layer is 2 micrometers, and the thickness of the second PE coating layer is 15 micrometers.

[0021] Optionally, the CPP film layer has a thickness of 40 micrometers, the OPP film layer has a thickness of 15 micrometers, and the nonwoven fabric layer has a basis weight of 60 g / m². 2 .

[0022] The beneficial effects of this utility model are: the bag is sealed by heat sealing with CPP heat sealing sheet, and the seal at the bag opening still has good sealing performance even when immersed in water, which can ensure the integrity of the seal, and still has good heat preservation performance in rainy weather. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a diagram showing the state of the insulated bag before it is sealed.

[0025] Figure 2 This is a diagram showing the state of the insulated bag after it has been sealed.

[0026] Figure 3 This is a simplified structural diagram of a thermal insulation composite film.

[0027] The figures in the diagram are labeled as follows: 1. Thermal insulation composite film; 2. Handle hole; 3. CPP heat-sealing sheet; 4. Base frame; 11. CPP film layer; 12. Adhesive layer; 13. Aluminized OPP film; 14. First PE coating layer; 15. Non-woven fabric layer; 16. Second PE coating layer; 17. Ink printing layer; 18. OPP film layer. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0031] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, an insulated bag includes an insulated composite film 1, which is thermally bonded together to form a bag body. The bag body has a bag opening and also includes a CPP (cast polypropylene) heat-sealing sheet. A handle hole 2 is provided on the bag wall of the bag body. The CPP heat-sealing sheet 3 is thermally bonded to the inner wall of the bag body and is located between the bottom of the bag and the handle hole 2. CPP heat-sealing sheets 3 are provided on both sides of the side walls of the bag body. The thickness of the CPP heat-sealing sheet 3 is 2mm to 3mm.

[0032] In this type of insulated bag, the bag body is formed by thermal bonding of an insulated composite film 1. First, a CPP heat-sealing sheet 3 is thermally bonded to the insulating composite film 1. When the insulating composite film 1 is formed into a bag body, a handle hole 2 is made on the bag body, thus completing the bag body formation. When it is necessary to fill the bag, the items are put into the bag body, and then the CPP heat-sealing sheet 3 is heated on the outside of the bag body using a heat-sealing machine (or other equipment). Then, the two CPP heat-sealing sheets 3 are bonded together, thus completing the sealing of the bag body. Since the bag body itself is made of the insulating composite film 1 through thermal bonding, and the bag opening is also formed by two CPP heat-sealing sheets 3 through thermal bonding, the seal at the bag opening of this type of insulated bag is heat-sealed. The sealing performance of the entire bag opening is relatively good. Even when water is immersed, the seal at the bag opening will not be damaged. Therefore, when using this type of insulated bag to deliver takeout food, it can still ensure good sealing in rainy weather, ensuring that the entire insulated bag has a good insulation effect.

[0033] Specifically, in this type of insulated bag, the adhesion strength of the CPP heat-sealing sheet 3 on the inner wall of the bag can be adjusted as needed. When packaging inexpensive meals, the adhesion strength of the CPP heat-sealing sheet 3 is relatively low. After heat sealing, the CPP heat-sealing sheet 3 can be detached from the inner wall of the bag by pulling the bag wall from both sides, thus making the entire insulated bag reusable. When this type of insulated bag is used to package high-priced meals, the adhesion strength of the CPP heat-sealing sheet 3 on the inner wall is relatively high. After heat sealing, the CPP heat-sealing sheet 3 cannot be pulled off the inner wall of the bag by pulling the bag wall from both sides. Only by breaking open the bag can the sheet be removed.

[0034] In summary, this type of thermal insulation bag is sealed by heat sealing with CPP heat sealing sheet 3. The seal at the bag opening still has good sealing performance even when immersed in water, which can ensure the integrity of the seal and maintain good thermal insulation performance in rainy weather.

[0035] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, it also includes a rigid plastic bottom frame 4, which is set inside the bag and located at the bottom of the bag. The bottom frame 4 supports the inner wall of the bag and is rectangular.

[0036] A rigid plastic frame 4 is installed at the bottom of the bag to open the bag for easy loading of items.

[0037] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the handle hole 2 is oval-shaped, and the periphery of the handle hole 2 is coated with a rubber ring layer.

[0038] The purpose of applying a rubber ring layer around the perimeter of the handle hole 2 is to reduce the rough feel when carrying it.

[0039] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the CPP heat-sealing sheet 3 is a square-shaped CPP heat-sealing sheet 3.

[0040] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the heat-insulating composite film 1 includes a non-woven fabric layer 15, an OPP film layer 18, and a CPP film layer 11. The CPP film layer 11 and the OPP film layer 18 are located on both sides of the non-woven fabric layer 15, with the OPP film layer 18 located on the outer wall of the bag and the CPP film layer 11 located on the inner wall of the bag. The CPP heat-sealing sheet 3 is thermally bonded to the CPP film layer 11.

[0041] When the inner wall of the bag is a CPP film layer 11, a CPP heat-sealing sheet 3 can be set on only one side of the bag wall to complete the subsequent heat sealing. The composite film is made of non-woven fabric layer 15, OPP film layer 18 and CPP film layer 11 to ensure that the entire insulated bag has good heat insulation performance.

[0042] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, it also includes an aluminized OPP film 13, which is disposed between the CPP film layer 11 and the non-woven fabric layer 15. An adhesive layer 12 is disposed between the aluminized OPP film 13 and the CPP film layer 11, and a first PE coating layer 14 is disposed between the aluminized OPP film 13 and the non-woven fabric layer 15.

[0043] The purpose of setting the aluminum-plated OPP film 13 is to further improve the thermal insulation performance of the entire thermal insulation composite film 1.

[0044] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the adhesive layer 12 has a thickness of 2 micrometers, the first PE coating layer 14 has a thickness of 15 micrometers, and the aluminum-coated OPP film 13 has a thickness of 12 micrometers.

[0045] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, a second PE coating layer 16 is disposed between the nonwoven fabric layer 15 and the OPP film layer 18, and an ink printing layer 17 is disposed on the OPP film layer 18, with the ink printing layer 17 located between the second PE coating layer 16 and the OPP film layer 18.

[0046] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the ink printing layer 17 has a thickness of 2 micrometers, and the second PE coating layer 16 has a thickness of 15 micrometers.

[0047] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the thickness of CPP film layer 11 is 40 micrometers, the thickness of OPP film layer 18 is 15 micrometers, and the basis weight of nonwoven fabric layer 15 is 60 g / m². 2 .

[0048] Appendix Figure 1 and appendix Figure 2 The shaded area represents the CPP heat-sealing sheet located on the inner wall of the bag, while the dashed line represents the bottom frame at the bottom of the bag.

[0049] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An insulated bag, comprising an insulated composite film, wherein the insulated composite film is thermally bonded together to form a bag body, the bag body having a bag opening, characterized in that, It also includes a CPP heat-sealing sheet. The bag wall has a handle hole. The CPP heat-sealing sheet is heat-bonded to the inner wall of the bag body. The CPP heat-sealing sheet is located between the bottom of the bag and the handle hole. CPP heat-sealing sheets are provided on both sides of the bag body. The thickness of the CPP heat-sealing sheet is 2mm to 3mm.

2. The insulated bag according to claim 1, characterized in that, It also includes a rigid plastic bottom frame, which is set inside the bag and located at the bottom of the bag. The bottom frame supports the inner wall of the bag and is rectangular in shape.

3. The insulated bag according to claim 1, characterized in that, The handle hole is oval-shaped, and the periphery of the handle hole is coated with a rubber ring layer.

4. The insulated bag according to claim 1, characterized in that, The CPP heat-sealing sheet is a square-shaped CPP heat-sealing sheet.

5. The insulated bag according to claim 1, characterized in that, The thermal insulation composite film includes a non-woven fabric layer, an OPP film layer, and a CPP film layer. The CPP film layer and the OPP film layer are located on both sides of the non-woven fabric layer, with the OPP film layer located on the outer wall of the bag and the CPP film layer located on the inner wall of the bag. The CPP heat-sealing sheet is thermally bonded to the CPP film layer.

6. The insulated bag according to claim 5, characterized in that, It also includes an aluminized OPP film, which is disposed between the CPP film layer and the non-woven fabric layer. An adhesive layer is disposed between the aluminized OPP film and the CPP film layer, and a first PE coating layer is disposed between the aluminized OPP film and the non-woven fabric layer.

7. The insulated bag according to claim 6, characterized in that, The adhesive layer has a thickness of 2 micrometers, the first PE coating layer has a thickness of 15 micrometers, and the aluminum-coated OPP film has a thickness of 12 micrometers.

8. The insulated bag according to claim 5, characterized in that, A second PE coating layer is disposed between the nonwoven fabric layer and the OPP film layer, and an ink printing layer is disposed on the OPP film layer, the ink printing layer being located between the second PE coating layer and the OPP film layer.

9. The insulated bag according to claim 8, characterized in that, The thickness of the ink printing layer is 2 micrometers, and the thickness of the second PE coating layer is 15 micrometers.

10. A thermal insulated bag according to claim 5, characterized in that, The CPP film layer has a thickness of 40 micrometers, the OPP film layer has a thickness of 15 micrometers, and the nonwoven fabric layer has a basis weight of 60 g / m². 2 .

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