Composite pearl wool bag

Abstract

The utility model discloses a composite pearl wool bag, and relates to the technical field of packaging bags. Comprising a bag body, and the bag body comprises a flame-retardant core layer, a first heat-resistant layer, a second heat-resistant layer, a first outer protective layer and a second outer protective layer; the first heat-resistant layer and the second heat-resistant layer are respectively arranged on the upper surface and the lower surface of the flame-retardant core layer, the first outer protective layer is arranged on the top surface of the first heat-resistant layer, and the second outer protective layer is arranged on the bottom surface of the second heat-resistant layer; the flame-retardant core layer comprises a pearl wool layer and non-woven fabric layers arranged on the upper bottom surface and the lower bottom surface of the pearl wool layer, PUR flame-retardant glue is bonded between the pearl wool layer and the non-woven fabric layers, and the PUR flame-retardant glue permeates into the non-woven fabric layers and the pearl wool layer; by adopting the technical scheme provided by the invention, the flame retardant property and the thermal insulation property of the pearl wool bag are effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of packaging bags, and particularly to a composite EPE bag. Background Art

[0002] EPE, also known as polyethylene foamed cotton, is a non-crosslinked closed-cell structure, also called EPE pearl cotton, which is a new type of environmentally friendly packaging material. It is composed of countless independent bubbles generated by physical foaming of low-density polyethylene resin, overcoming the disadvantages of ordinary foamed rubber such as being fragile, deformable, and having poor recovery. Therefore, it is widely used in the packaging field. However, due to its main component, low-density polyethylene ester, containing countless independent bubbles inside, it is flammable. In addition, due to its relatively high coefficient of thermal expansion, it is also easily affected by temperature changes and is prone to deterioration problems under high and low temperatures. Moreover, its relatively soft texture results in limited load-bearing capacity for bagged packaging. For this reason, this application aims to further optimize the traditional EPE bag and make up for some defects of a single EPE bag through a composite structure. Summary of the Utility Model

[0003] The purpose of this application is to provide a composite EPE bag to solve at least one of the above technical problems.

[0004] To solve the above technical problems, this application provides a composite EPE bag, including a bag body main body, and the bag body main body includes a flame-retardant core layer, a first heat-resistant layer, a second heat-resistant layer, a first outer protection layer, and a second outer protection layer;

[0005] The first heat-resistant layer and the second heat-resistant layer are respectively arranged on the upper and lower surfaces of the flame-retardant core layer, the first outer protection layer is arranged on the top surface of the first heat-resistant layer, and the second outer protection layer is arranged on the bottom surface of the second heat-resistant layer;

[0006] The flame-retardant core layer includes an EPE layer and non-woven fabric layers arranged on the upper and lower bottom surfaces of the EPE layer. PUR flame-retardant glue is bonded between the EPE layer and the non-woven fabric layers, and the PUR flame-retardant glue penetrates into the non-woven fabric layers and the EPE layer;

[0007] In the above implementation process, the EPE bag provided by this solution adopts a multi-layer composite structure. Among them, the flame-retardant core layer is located in the middle. While ensuring that the bag body retains the excellent characteristics of the EPE bag, it also improves the flame-retardant performance of the bag body, thereby reducing the safety risks during use and enhancing the use safety. The first heat-resistant layer and the second heat-resistant layer cooperate to cover the flame-retardant core layer, which can effectively improve the heat-resistant property of the bag body, avoid the problem that a single EPE bag is easily deformed when heated, and thus improve the comprehensive performance of the bag body. The outer protective layer plays the most basic protection function. In this solution, in order to effectively improve the flame-retardant performance of the flame-retardant core layer, the flame-retardant core layer adopts an approximate five-layer structure. The main structure is EPE, and non-woven fabrics with flame-retardant characteristics are further arranged on both the upper and lower sides of the EPE. Between the non-woven fabric and the EPE, PUR flame-retardant glue is used for bonding in this solution. It not only achieves good adhesion, but also has excellent flame-retardant performance, thereby improving the flame-retardant performance of the bag body. In addition, using PUR flame-retardant glue to bond the non-woven fabric and the EPE, the glue can penetrate into the gap between the non-woven fabric and the EPE to form a flame-retardant film structure, which can further improve the flame-retardant performance.

[0008] Preferably, the first heat-resistant layer and the second heat-resistant layer include a phenolic resin layer and a polyester fiber layer;

[0009] The phenolic resin layer is arranged on the side close to the flame-retardant core layer, and the polyester fiber layer is arranged on the side far from the flame-retardant core layer;

[0010] In the above implementation process, phenolic resin has excellent heat resistance, which can effectively alleviate the problem that a single EPE bag is easily deformed when the temperature reaches a certain level. In this solution, phenolic resin is further introduced to adhere to the polyester fiber, not only using its excellent heat-resistant performance to improve the overall heat resistance of the bag body, but also using its good adhesion for good bonding of the multi-layer structure. Polyester fiber has good tear resistance, which can improve the overall tear resistance of the bag body and enhance the strength of the bag body. At the same time, it also has good heat-resistant performance. With the cooperation of the two, the heat-resistant performance can be effectively exerted.

[0011] Preferably, the first outer protective layer and the second outer protective layer include a polyurethane layer;

[0012] In the above implementation process, polyurethane has excellent heat insulation performance, making it an effective material for the outer protective layer to improve the heat insulation performance of the bag body. In addition, polyurethane also has the characteristics of fire prevention and flame retardancy, and cooperates with the flame-retardant core layer to achieve a double-layer flame-retardant structure inside and outside.

[0013] Preferably, a scratch-resistant layer is provided outside the first outer protective layer;

[0014] Preferably, the scratch-resistant layer includes a bulletproof silk layer;

[0015] In the above implementation process, the present solution further adds a scratch-resistant layer made of bulletproof silk on the outermost part of the bag body main body, which can effectively protect the outside of the bag body and reduce the probability of being punctured by sharp objects.

[0016] Preferably, the thickness of the PUR flame-retardant glue is 0.1 - 0.2 mm;

[0017] In the above implementation process, the present solution selects PUR flame-retardant glue, which can achieve high flame-retardant performance with a relatively small amount in combination with EPE and non-woven fabric. Therefore, its usage amount does not need to be too much, and it is sufficient to maintain a thickness of 0.1 - 0.2 mm.

[0018] Preferably, the thickness of the first heat-resistant layer and the second heat-resistant layer is 0.1 - 0.3 mm.

[0019] Compared with the prior art, the beneficial effects of the present application are as follows: In the present solution, in order to effectively improve the flame-retardant performance of the flame-retardant core layer, the flame-retardant core layer adopts an approximately five-layer structure, where the main structure is EPE, and non-woven fabrics with flame-retardant characteristics are further provided on both the upper and lower sides of the EPE. Between the non-woven fabric and the EPE, the present solution uses PUR flame-retardant glue for bonding, which not only achieves good adhesion but also has excellent flame-retardant performance, thereby improving the flame-retardant performance of the bag body; in addition, using PUR flame-retardant glue to bond the non-woven fabric and the EPE, the glue can penetrate into the gap between the non-woven fabric and the EPE to form a flame-retardant film structure, which can further improve the flame-retardant performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic diagram of the overall structure of one embodiment of the present application;

[0022] Figure 2 is a schematic diagram of the structure of the flame-retardant core layer of one embodiment of the present application;

[0023] Figure 3 is a schematic diagram of a partial structure of one embodiment of the present application;

[0024] Wherein: 10, flame-retardant core layer; 11, EPE layer; 12, PUR flame-retardant glue; 13, non-woven fabric layer; 21, first heat-resistant layer; 211, phenolic resin layer; 212, polyester fiber layer; 22, second heat-resistant layer; 31, first outer protective layer; 32, second outer protective layer; 40, scratch-resistant layer. Detailed implementation manners

[0025] The following will disclose multiple implementation manners of the present application with diagrams. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present application. That is to say, in some implementation manners of the present application, these practical details are unnecessary. In addition, for the purpose of simplifying the diagrams, some conventional structures and components will be shown in a simple schematic manner in the diagrams.

[0026] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If this specific posture changes, then the directional indications will also change accordingly.

[0027] In addition, in the present application, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the order or sequence, nor are they used to limit the present application. It is only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0028] In order to further understand the utility model content, features and effects of the present application, the following embodiments are exemplified and described in detail with reference to the drawings as follows:

[0029] Embodiment

[0030] EPE pearl cotton, also known as polyethylene foamed cotton, has a non-crosslinked closed-cell structure. Also known as EPE pearl cotton, it is a new type of environmentally friendly packaging material. It is composed of countless independent bubbles generated by physical foaming of low-density polyethylene resin, overcoming the disadvantages of ordinary foamed glue such as being fragile, deformable, and having poor recoverability. Therefore, it is widely used in the packaging field. However, due to the fact that its main component, low-density polyethylene resin, contains countless independent bubbles inside, it is flammable. In addition, due to its relatively high coefficient of thermal expansion, it is also easily affected by temperature changes and is prone to deterioration problems under high and low temperatures. Moreover, its relatively soft texture results in limited load-bearing capacity for bagged packaging. For this reason, this application aims to further optimize the traditional EPE pearl cotton bag and make up for some defects of a single EPE pearl cotton bag through a composite structure. To solve the above technical problems, this embodiment provides the following technical solutions:

[0031] Specifically, please refer to Figures 1-3 , this embodiment provides a composite EPE pearl cotton bag, including a bag body main body, and the bag body main body includes a flame-retardant core layer 10, a first heat-resistant layer 21, a second heat-resistant layer 22, a first outer protection layer 31, and a second outer protection layer 32;

[0032] Specifically, the first heat-resistant layer 21 and the second heat-resistant layer 22 are respectively arranged on the upper and lower surfaces of the flame-retardant core layer 10, the first outer protection layer 31 is arranged on the top surface of the first heat-resistant layer 21, and the second outer protection layer 32 is arranged on the bottom surface of the second heat-resistant layer 22;

[0033] Further, please refer to Figure 2 , the flame-retardant core layer 10 includes an EPE pearl cotton layer 11 and non-woven fabric layers 13 arranged on the upper and lower bottom surfaces of the EPE pearl cotton layer 11. PUR flame-retardant glue 12 is bonded between the EPE pearl cotton layer 11 and the non-woven fabric layers 13, and the PUR flame-retardant glue 12 penetrates into the non-woven fabric layers 13 and the EPE pearl cotton layer 11;

[0034] In the above solution, the EPE bag provided by this solution adopts a multi-layer composite structure. Among them, the flame-retardant core layer 10 is located in the middle. While ensuring that the bag body retains the excellent characteristics of the EPE bag, it also improves the flame-retardant performance of the bag body, thereby reducing the safety risk during use and enhancing the use safety. The first heat-resistant layer 21 and the second heat-resistant layer 22 cooperate to wrap the flame-retardant core layer 10, which can effectively improve the heat-resistant property of the bag body, avoid the problem that a single EPE bag is prone to deformation when heated, and thus improve the comprehensive performance of the bag body. The outer protective layer plays the most basic protection function. In this solution, in order to effectively improve the flame-retardant performance of the flame-retardant core layer 10, the flame-retardant core layer 10 adopts an approximate five-layer structure. The main structure is EPE, and non-woven fabrics with flame-retardant characteristics are further arranged on the upper and lower sides of the EPE. Between the non-woven fabric and the EPE, PUR flame-retardant glue 12 is used for bonding in this solution. It not only achieves good adhesion, but also has excellent flame-retardant performance, thereby improving the flame-retardant performance of the bag body. In addition, using PUR flame-retardant glue 12 to bond the non-woven fabric and the EPE, the glue can penetrate into the gap between the non-woven fabric and the EPE to form a flame-retardant film structure, which can further improve the flame-retardant performance.

[0035] Specifically, the first heat-resistant layer 21 and the second heat-resistant layer 22 include a phenolic resin layer 211 and a polyester fiber layer 212;

[0036] Further, please refer to Figure 3 , the phenolic resin layer 211 is arranged on the side close to the flame-retardant core layer 10, and the polyester fiber layer 212 is arranged on the side far from the flame-retardant core layer 10;

[0037] In the above solution, phenolic resin has excellent heat resistance, which can effectively alleviate the problem that a single EPE bag is prone to deformation when the temperature reaches a certain level. In this solution, phenolic resin is further introduced to adhere to the polyester fiber, not only using its excellent heat-resistant performance to improve the overall heat resistance of the bag body, but also using its good adhesion for good bonding of the multi-layer structure. The polyester fiber has good tear resistance, which can improve the overall tear resistance of the bag body and enhance the strength of the bag body. At the same time, it also has good heat resistance. With the cooperation of the two, the heat-resistant performance can be effectively exerted.

[0038] Specifically, the first outer protective layer 31 and the second outer protective layer 32 include a polyurethane layer;

[0039] In the above solution, polyurethane has excellent heat insulation performance, making it an effective material for the outer protective layer to improve the heat insulation performance of the bag body. In addition, polyurethane also has the characteristics of fire prevention and flame retardancy, and cooperates with the flame-retardant core layer 10 to achieve a double-layer flame-retardant structure inside and outside.

[0040] Specifically, a scratch-proof layer 40 is provided outside the first outer protective layer 31;

[0041] In one embodiment, the scratch-resistant layer 40 includes a bulletproof fiber layer;

[0042] In the above solution, in this solution, a scratch-resistant layer 40 made of bulletproof fiber is further added to the outermost part of the bag body, which can effectively protect the outside of the bag body and reduce the probability of being pierced by sharp objects.

[0043] Specifically, the thickness of the PUR flame-retardant glue 12 is 0.1 - 0.2 mm;

[0044] In the above solution, this solution selects the PUR flame-retardant glue 12, which can achieve a high flame-retardant performance with a relatively small amount in combination with the pearl cotton and non-woven fabric. Therefore, its usage amount does not need to be too much, and it can be maintained at a thickness of 0.1 - 0.2 mm.

[0045] Specifically, the thickness of the first heat-resistant layer 21 and the second heat-resistant layer 22 is 0.1 - 0.3 mm.

[0046] The above description is only a preferred embodiment of the present application, and does not impose any form of limitation on the present application. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application all belong to the scope of the technical solution of the present application.

Claims

1. A composite pearl cotton bag, characterized in that: The bag body comprises a flame retardant core layer, a first heat resistant layer, a second heat resistant layer, a first outer protective layer and a second outer protective layer; The first heat-resistant layer and the second heat-resistant layer are respectively arranged on the upper and lower surfaces of the flame-retardant core layer, the first outer protective layer is arranged on the top surface of the first heat-resistant layer, and the second outer protective layer is arranged on the bottom surface of the second heat-resistant layer; The flame retardant core layer includes a pearl cotton layer and non-woven fabric layers arranged on the upper and lower bottom surfaces of the pearl cotton layer, PUR flame retardant glue is bonded between the pearl cotton layer and the non-woven fabric layer, and the PUR flame retardant glue penetrates into the non-woven fabric layer and the pearl cotton layer.

2. The composite pearl cotton bag according to claim 1, characterized in that: The first heat-resistant layer and the second heat-resistant layer include a phenolic resin layer and a polyester fiber layer; The phenolic resin layer is arranged close to one side of the flame retardant core layer, and the polyester fiber layer is arranged away from one side of the flame retardant core layer.

3. The composite pearl cotton bag according to claim 1, characterized in that: The first outer sheath layer and the second outer sheath layer include polyurethane layers.

4. The composite pearl cotton bag according to claim 3, characterized in that: An anti-scratch layer is arranged outside the first outer protective layer.

5. The composite pearl cotton bag according to claim 4, characterized in that: The anti-scratch layer includes an anti-ballistic silk layer.

6. The composite pearl cotton bag according to claim 5, characterized in that: The thickness of the PUR flame retardant glue is 0.1-0.2 mm.

7. The composite pearl cotton bag according to claim 5, characterized in that: The thickness of the first heat-resistant layer and the second heat-resistant layer is 0.1-0.3 mm.

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