Barrier recyclable paper-plastic packaging bag

Abstract

The utility model discloses a barrier recoverable paper-plastic packaging bag, which comprises basic composite membranes, the basic composite membranes are matched together to form a bag body, the bag body is provided with a bag opening and comprises a paper sheet, a bottom sheet and a bonding sheet, the bottom sheet is arranged on the basic composite membranes and is positioned on the outer wall of the bag body, and the bonding sheet is arranged on the outer wall of the bag body. The bonding sheet is arranged on the bottom sheet in a bonding mode, one end of the bonding sheet and the bottom sheet are fixed together, the bonding sheet and the bag body are located on the two sides of the bottom sheet respectively, the paper sheet is bonded on the basic composite membrane, and the bonding sheet and the bottom sheet are located between the paper sheet and the basic composite membrane. Due to the fact that the bottom piece and the bonding piece are arranged on the bag body, the packaging bag can be wound, stored and fixed after being used, the wind blowing resistance of the bag body is improved after the bag body is wound, stored and fixed, the wound bag piece is not prone to being blown away by wind when being thrown into a field open type garbage recycling container, and follow-up collection and recycling are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of packaging materials, in particular to a barrier recyclable paper-plastic packaging bag. Background Art

[0002] Paper-plastic packaging bags are a commonly used type of packaging bags. In order to achieve the recycling and reuse of paper-plastic packaging bags, patent announcement document CN218086814U discloses a recyclable paper-plastic composite packaging bag. However, there is a problem when recycling this type of packaging bag after use. That is, since the bag sheets of this structure are not provided with a corresponding fixing structure, the bag of this structure cannot be fixed after being rolled up when it is recycled after use. Therefore, the packaging bag of this structure cannot be rolled up and fixed. Utility Model Content

[0003] In response to the above-mentioned problems, the utility model proposes a barrier recyclable paper-plastic packaging bag. By arranging a bottom film and an adhesive sheet on the bag body, the packaging bag can be rolled up and fixed after use. After the bag body is rolled up, stored and fixed, its wind resistance becomes stronger. When the rolled bag pieces are thrown into an open garbage recycling container in the wild, they are not easily blown away by the wind, which facilitates subsequent collection and recycling.

[0004] The technical solutions adopted by this utility model are as follows:

[0005] A barrier recyclable paper-plastic packaging bag includes a basic composite film sheet, which is combined to form a bag body. The bag body has a bag opening and includes a paper sheet, a bottom sheet and an adhesive sheet. The bottom sheet is arranged on the basic composite film sheet and is located on the outer wall of the bag body. The adhesive sheet is adhesively arranged on the bottom sheet, and one end of the adhesive sheet is fixed to the bottom sheet. The adhesive sheet and the bag body are respectively located on both sides of the bottom sheet. The paper sheet is adhered to the basic composite film sheet, and the adhesive sheet and the bottom sheet are located between the paper sheet and the basic composite film sheet.

[0006] In this type of packaging bag, the basic composite film sheets are combined together by heat sealing to form a bag body. After the bag body is formed, the bottom sheet is directly compounded on the bag body. An adhesive sheet is fixed to one end of the bottom sheet, which is bonded to the bottom sheet when not in use. The paper sheet is compounded on the basic composite film sheet by bonding, wherein the adhesive sheet and the bottom sheet are located between the paper sheet and the basic composite film sheet, and the adhesive sheet and the bottom sheet are not bonded to the paper sheet. This is the state of the packaging bag before use.

[0007] When this type of packaging is used and needs to be recycled, first tear off the outermost paper sheet from the base composite film sheet. Two paper sheets can be torn off from each bag body. The two paper sheets can be recycled separately or not, as paper will degrade in the natural environment. After the two paper sheets are torn off, the bag sheet can be rolled up, and then the adhesive sheet can be torn off from the bottom film so that the adhesive sheet and the base composite film sheet are bonded together. At this time, the entire bag body is wrapped and stored. After the bag body is wrapped and stored and fixed, the wind resistance of the bag body becomes stronger. The wrapped bag sheet is not easily blown away when placed in an open-type garbage recycling container in the wild, which facilitates subsequent collection and recycling. When the sheet-like bag body is placed in an open-type garbage recycling container in the wild, it is very easy to be blown away by the wind in strong winds.

[0008] To sum up, this type of packaging bag realizes that the packaging bag can be rolled up and fixed after use by arranging a bottom film and an adhesive film on the bag body. After the bag body is rolled up and fixed, its wind resistance becomes stronger. When the rolled bag pieces are thrown into an open garbage recycling container in the wild, they are not easily blown away by the wind, which facilitates subsequent collection and recycling.

[0009] Optionally, there are multiple bottom films, and the adhesive sheet is provided on each bottom film.

[0010] There are no less than two specific bottom films, and each bottom film is provided with an adhesive sheet. The specific bottom film can be a bottom film made of PE material, and the adhesive sheet can be an adhesive sheet made of PE material.

[0011] Optionally, a polyurethane adhesive layer is further included, and the paper sheet is adhered to the basic composite membrane sheet through the polyurethane adhesive layer.

[0012] The specific function of the polyurethane adhesive layer is to bond the paper sheet and the basic composite film sheet. The space between the paper sheet and the basic composite film sheet is not completely filled with the polyurethane adhesive layer. Some edge areas of the basic composite film sheet are coated with polyurethane adhesive. With the help of the bonding effect of the polyurethane adhesive, the paper sheet and the basic composite film sheet are bonded together.

[0013] Optionally, the paper sheet includes a kraft paper sheet.

[0014] Optionally, the paper sheet has a gram weight of 50-300g.

[0015] Optionally, the basic composite film includes a biaxially oriented polyethylene film, a PVA barrier coating, an adhesive layer and a heat-sealed polyethylene film, the biaxially oriented polyethylene film and the adhesive layer are respectively located on both sides of the PVA barrier coating, and the heat-sealed polyethylene film and the PVA barrier coating are respectively located on both sides of the adhesive layer.

[0016] The PVA barrier coating serves as a bonding layer between the biaxially oriented polyethylene film and the adhesive layer, and also ensures that the entire base composite film has good barrier properties. The bag is manufactured by heat-sealing two base composite films, where the heat-sealed films are bonded together.

[0017] Optionally, the biaxially oriented polyethylene film has a thickness of 15um to 50um, and the adhesive layer has a thickness of 15um to 50um.

[0018] Optionally, the thickness of the heat-sealing polyethylene film is 40um~100um.

[0019] The beneficial effects of the utility model are as follows: by arranging a bottom film and an adhesive film on the bag body, the packaging bag can be rolled up and fixed after use. After the bag body is rolled up and fixed, its wind resistance becomes stronger. When the rolled bag pieces are thrown into an open garbage recycling container in the wild, they are not easily blown away by the wind, which facilitates subsequent collection and recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic diagram of the position of the polyurethane adhesive layer on the basic composite membrane;

[0022] Figure 2 It is a schematic diagram of the bonding relationship between the paper sheet and the basic composite membrane;

[0023] Figure 3 It is a schematic diagram of the bag after being wound.

[0024] The reference numerals in the figure are: 1. basic composite film; 101. biaxially oriented polyethylene film; 102. PVA barrier coating; 103. adhesive layer; 104. heat-sealable polyethylene film; 2. polyurethane adhesive layer; 3. adhesive sheet; 4. bottom film; 5. paper sheet. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate 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 may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are 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 according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0028] As attached Figure 1 And attached Figure 2 As shown, a barrier recyclable paper-plastic packaging bag includes a basic composite film sheet 1, which is combined together to form a bag body. The bag body has a bag opening and includes a paper sheet 5, a bottom film 4 and an adhesive sheet 3. The bottom film 4 is arranged on the basic composite film sheet 1, and the bottom film 4 is located on the outer wall of the bag body. The adhesive sheet 3 is bonded to the bottom film 4, and one end of the adhesive sheet 3 is fixed to the bottom film 4. The adhesive sheet 3 and the bag body are respectively located on both sides of the bottom film 4. The paper sheet 5 is bonded to the basic composite film sheet 1, and the adhesive sheet 3 and the bottom film 4 are located between the paper sheet 5 and the basic composite film sheet 1.

[0029] In this packaging bag, the basic composite film sheet 1 is combined together by heat sealing to form a bag body. After the bag body is formed, the bottom sheet 4 is directly compounded on the bag body. An adhesive sheet 3 is fixed to one end of the bottom sheet 4. The adhesive sheet 3 is bonded to the bottom sheet 4 when not in use. The paper sheet 5 is compounded on the basic composite film sheet 1 by bonding, wherein the adhesive sheet 3 and the bottom sheet 4 are located between the paper sheet 5 and the basic composite film sheet 1, and the adhesive sheet 3 and the bottom sheet 4 are not bonded to the paper sheet 5. This is the state of the packaging bag before use (this state can be seen in the attached figure). Figure 2 As shown in the Figure 2 The bottom sheet and the adhesive sheet are not bonded to the paper sheet, and the bottom sheet and the adhesive sheet are not in contact with the polyurethane adhesive layer).

[0030] When this type of packaging is used up and needs to be recycled, first tear off the outermost paper sheet 5 from the base composite film sheet 1. Two paper sheets 5 can be torn off from each bag. The two paper sheets 5 can be recycled separately or not, as paper will degrade in the natural environment. After the two paper sheets 5 are torn off, the bag can be rolled up, and then the adhesive sheet 3 can be torn off from the bottom sheet 4 so that the adhesive sheet 3 is bonded to the base composite film sheet 1. At this point, the entire bag is rolled up and stored. After the bag is rolled up and fixed, the state after the roll is stored is as shown in the attached figure. Figure 3 As shown in the figure, the bag body has stronger wind resistance after being rolled, stored and fixed. The rolled bag pieces are not easily blown away by the wind when thrown into an open garbage recycling container in the wild, which is convenient for subsequent collection and recycling. When the sheet-like bag body is thrown into an open garbage recycling container in the wild, it is very easy to be blown away by the wind in strong winds.

[0031] In summary, this type of packaging bag realizes that the packaging bag can be rolled up and fixed after use by arranging a bottom film 4 and an adhesive film 3 on the bag body. After the bag body is rolled up and fixed, its wind resistance becomes stronger. When the rolled bag pieces are thrown into an open garbage recycling container in the wild, they are not easily blown away by the wind, which facilitates subsequent collection and recycling.

[0032] As attached Figure 1 And attached Figure 2 As shown, there are multiple bottom films 4, and each bottom film 4 is provided with an adhesive sheet 3.

[0033] Specifically, there are no less than two bottom films 4, and each bottom film 4 is provided with an adhesive sheet 3. Specifically, the bottom film 4 can be a bottom film 4 made of PE material, and the adhesive sheet 3 can be an adhesive sheet 3 made of PE material.

[0034] As attached Figure 1 And attached Figure 2 As shown, it also includes a polyurethane adhesive layer 2, and the paper sheet 5 is adhered to the basic composite membrane sheet 1 through the polyurethane adhesive layer 2.

[0035] Specifically, the function of the polyurethane adhesive layer 2 is to bond the paper sheet 5 and the basic composite film sheet 1. The space between the paper sheet 5 and the basic composite film sheet 1 is not completely filled with the polyurethane adhesive layer 2. Some edge areas of the basic composite film sheet 1 are coated with polyurethane adhesive. With the help of the bonding effect of the polyurethane adhesive, the paper sheet 5 and the basic composite film sheet 1 are bonded together.

[0036] As attached Figure 1 And attached Figure 2 As shown, the paper sheet 5 comprises a kraft paper sheet 5 .

[0037] As attached Figure 1 And attached Figure 2 As shown, the paper sheet 5 has a grammage of 50-300 g.

[0038] As attached Figure 1 And attached Figure 2 As shown, the basic composite film 1 includes a biaxially oriented polyethylene film 101, a PVA barrier coating 102, an adhesive layer 103 and a heat-sealing polyethylene film 104. The biaxially oriented polyethylene film 101 and the adhesive layer 103 are respectively located on both sides of the PVA barrier coating 102, and the heat-sealing polyethylene film 104 and the PVA barrier coating 102 are respectively located on both sides of the adhesive layer.

[0039] The PVA barrier coating 102 serves as a bonding layer for the biaxially oriented polyethylene film and ensures that the entire base composite film sheet 1 has good barrier properties. Specifically, the bag is made by heat-sealing two base composite film sheets 1, wherein the heat-sealed base composite film sheets 1 are bonded together.

[0040] Specific adhesive layers include, but are not limited to, polyurethane adhesive layers.

[0041] As attached Figure 1 And attached Figure 2 As shown, the thickness of the biaxially oriented polyethylene film is 15um~50um, and the thickness of the adhesive layer is 15um~50um.

[0042] As attached Figure 1 And attached Figure 2 As shown, the thickness of the heat-sealed polyethylene film is 40um~100um.

[0043] The above-described embodiments only express some embodiments of the present invention. The description is relatively specific and detailed, but it should not be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, it is still possible to modify the technical solutions described in the above-mentioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this utility model should be included in the scope of protection of this utility model.

Claims

1. A barrier recyclable paper-plastic packaging bag, comprising a basic composite film sheet, wherein the basic composite film sheet is combined to form a bag body, wherein the bag body has a bag opening, and wherein: It includes a paper sheet, a bottom sheet and an adhesive sheet. The bottom sheet is arranged on the basic composite film sheet, and the bottom sheet is located on the outer wall of the bag body. The adhesive sheet is adhesively arranged on the bottom sheet, and one end of the adhesive sheet is fixed to the bottom sheet. The adhesive sheet and the bag body are respectively located on both sides of the bottom sheet. The paper sheet is adhered to the basic composite film sheet, and the adhesive sheet and the bottom sheet are located between the paper sheet and the basic composite film sheet.

2. The barrier recyclable paper-plastic packaging bag according to claim 1, characterized in that: There are multiple bottom sheets, and each bottom sheet is provided with the adhesive sheet.

3. The barrier recyclable paper-plastic packaging bag according to claim 1, characterized in that: It also includes a polyurethane adhesive layer, and the paper sheet is adhered to the basic composite film sheet through the polyurethane adhesive layer.

4. The barrier recyclable paper-plastic packaging bag according to claim 1, characterized in that: The paper sheet comprises a kraft paper sheet.

5. The barrier recyclable paper-plastic packaging bag according to claim 1, characterized in that: The paper sheet has a gram weight of 50-300g.

6. The barrier recyclable paper-plastic packaging bag according to claim 1, characterized in that: The basic composite film includes a biaxially oriented polyethylene film, a PVA barrier coating, an adhesive layer and a heat-sealing polyethylene film. The biaxially oriented polyethylene film and the adhesive layer are respectively located on both sides of the PVA barrier coating, and the heat-sealing polyethylene film and the PVA barrier coating are respectively located on both sides of the adhesive layer.

7. The barrier recyclable paper-plastic packaging bag according to claim 6, characterized in that: The thickness of the biaxially oriented polyethylene film is 15um-50um, and the thickness of the adhesive layer is 15um-50um.

8. The barrier recyclable paper-plastic packaging bag according to claim 6, characterized in that: The thickness of the heat-sealing polyethylene film is 40 μm to 100 μm.

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