Waterproof file pocket

Abstract

The utility model discloses a waterproof file pocket which comprises a waterproof pocket piece, a first flexible piece and a second flexible piece, part of wall surfaces of the waterproof pocket piece are bonded together to form a pocket body, the pocket body is provided with a pocket opening, the first flexible piece and the second flexible piece are both arranged on the inner wall of the pocket body, and the first flexible piece and the second flexible piece are arranged on the inner wall of the pocket body. The first flexible piece and the second flexible piece are located on the two sides of the bag opening respectively, the first flexible piece is provided with embedding strips, the second flexible piece is provided with a clamping groove, the embedding strips are in a semi-cylindrical shape and used for being matched with the clamping groove in a clamped mode, the number of the embedding strips is not less than two, and the embedding strips are arranged on the two sides of the bag opening respectively. The number of the clamping grooves is equal to that of the embedded strips. Compared with the prior art, the waterproof file pocket has the advantages that the semi-cylindrical embedded strips are matched with the clamping grooves for sealing, the sealing effect is good, the embedded strips are not prone to breakage, and the waterproof file pocket is more reliable in use.

Description

Technical Field

[0001] The utility model relates to the field of packaging appliances, in particular to a waterproof document bag. Background Art

[0002] The waterproof document bag is a commonly used packaging appliance at present. A waterproof document bag is disclosed in the patent publication document CN221366352U. The bag body of this waterproof document bag is made of a waterproof bag piece. A first bending part (the serial number of the attached drawing reference in the document is 2) and a second bending part (the serial number of the attached drawing reference in the document is 3) are arranged at the bag mouth of the bag body. Both the first bending part and the second bending part are in a hook shape. When the whole bag body is closed, the first bending part and the second bending part are clamped and fitted together to complete the sealing of the bag body. For the waterproof bag with this structure, since both the first bending part and the second bending part are in a U shape, and the U-shaped structure is easy to break during use, the reliability is poor. Summary of the Utility Model

[0003] Aiming at the above problems, the utility model provides a waterproof document bag, which uses a semi-cylindrical embedding strip and a clamping groove to cooperate for sealing, has a good sealing effect, is not easy to break for the embedding strip, and is more reliable during use.

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

[0005] A waterproof document bag includes a waterproof bag piece. Part of the wall surfaces of the waterproof bag piece are bonded together to form a bag body. The bag body has a bag mouth. The waterproof document bag further includes a first flexible piece and a second flexible piece. Both the first flexible piece and the second flexible piece are arranged on the inner wall of the bag body, and the first flexible piece and the second flexible piece are respectively located on both sides of the bag mouth. The first flexible piece is provided with an embedding strip, the second flexible piece is provided with a clamping groove, the embedding strip is semi-cylindrical, the embedding strip is used for clamping and cooperating with the clamping groove, the number of the embedding strips is not less than 2, and the number of the clamping grooves is equal to the number of the embedding strips.

[0006] In this kind of waterproof document bag, the bag body is made of a waterproof bag piece, and the bag body itself has good waterproof performance. After the embedding strip is embedded into the clamping groove, a layer of sealing is formed. The number of the embedding strips is not less than 2, and the number of the clamping grooves is equal to the number of the embedding strips. Therefore, not less than 2 layers of sealing can be formed at the bag mouth of the bag body. After the document is put into the bag body, the good sealing of the document in the bag body can be ensured.

[0007] In this kind of waterproof document bag, since a semi-cylindrical embedding strip is adopted, the semi-cylindrical embedding strip is substantially linear. The linear embedding strip is not easy to break compared with the U-shaped structure, and the reliability during use is stronger.

[0008] Specifically, both the first flexible sheet and the second flexible sheet are formed on the basis of a mixture of PP and PE. The insertion strip is integrally formed with the first flexible sheet.

[0009] In this waterproof document bag, the structure of the engaging groove is adapted to the insertion strip, and its structure is also roughly semi-circular. The insertion strip can be completely inserted into the engaging groove.

[0010] In summary, this waterproof document bag uses a semi-cylindrical insertion strip and an engaging groove to cooperate for sealing, with good sealing effect, and the insertion strip is not easily broken, making it more reliable in use.

[0011] Optionally, the insertion strips are parallel and non-touching, and the engaging grooves are parallel and non-touching.

[0012] Optionally, the waterproof bag sheet includes an aluminum oxide-coated PET film layer, a paper layer, and a heat-sealing film layer, and the aluminum oxide-coated PET film layer and the heat-sealing film layer are respectively arranged on both sides of the paper layer.

[0013] The waterproof bag sheet containing the aluminum oxide-coated PET film layer can ensure that the entire waterproof bag sheet has good barrier properties and light impermeability. The entire waterproof bag sheet has good waterproof performance and is not easily punctured.

[0014] Specifically, the aluminum oxide-coated PET film layer is located on the outer wall of the bag body, while the heat-sealing film layer is located on the inner wall of the bag body, and the first flexible sheet and the second flexible sheet are both arranged on the heat-sealing film layer.

[0015] Optionally, it further includes a first polyurethane adhesive layer and a second polyurethane adhesive layer. The first polyurethane adhesive layer is arranged between the aluminum oxide-coated PET film layer and the paper layer, and the second polyurethane adhesive layer is arranged between the paper layer and the heat-sealing film layer.

[0016] The functions of the first polyurethane adhesive layer and the second polyurethane adhesive layer are to play an adhesive role.

[0017] Optionally, it further includes a printing layer, and the printing layer is arranged on the PET film layer and is located between the aluminum oxide-coated PET film layer and the first polyurethane adhesive layer.

[0018] Optionally, it further includes a laminating layer, and the laminating layer is arranged between the second polyurethane adhesive layer and the heat-sealing film layer, and the thickness of the laminating layer is 20um.

[0019] Optionally, the heat-sealing film layer includes a PP film or a PE film.

[0020] Optionally, the thickness of the aluminum oxide-coated PET film layer is 12.5um, the thickness of the paper layer is 80um, and the thickness of the heat-sealing film layer is 70um.

[0021] The beneficial effects of the present utility model are as follows: The semi-cylindrical embedding strip is used in cooperation with the engaging groove for sealing, with good sealing effect, and the embedding strip is not easily broken, making it more reliable in use. Brief Description of the Drawings

[0022] 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 use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of a waterproof document bag;

[0024] Figure 2 It is a schematic structural diagram of a waterproof bag piece.

[0025] The reference numerals in the drawings are as follows: 1, waterproof bag piece; 101, aluminum oxide-coated PET film; 102, printing layer; 103, first polyurethane adhesive layer; 104, paper layer; 105, second polyurethane adhesive layer; 106, coating layer; 107, heat-sealing film layer; 2, first flexible piece; 201, embedding strip; 3, second flexible piece; 301, engaging groove. Detailed Embodiment

[0026] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific embodiments of the present utility model in conjunction with the drawings.

[0027] Many specific details are set forth in the following description in order to fully understand the present utility model, but the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0029] As shown in the attached Figure 1 and the attached Figure 2 As shown, a waterproof document bag includes a waterproof bag sheet 1. Part of the wall surface of the waterproof bag sheet 1 is bonded together to form a bag body. The bag body has a bag opening. It further includes a first flexible sheet 2 and a second flexible sheet 3. Both the first flexible sheet 2 and the second flexible sheet 3 are arranged at the inner wall of the bag body, and the first flexible sheet 2 and the second flexible sheet 3 are respectively located on both sides of the bag opening. The first flexible sheet 2 is provided with an embedding strip 201, and the second flexible sheet 3 is provided with a clamping groove 301. The embedding strip 201 is semi-cylindrical. The embedding strip 201 is used for clamping and cooperating with the clamping groove 301. There are no less than 2 embedding strips 201, and the number of the clamping grooves 301 is equal to the number of the embedding strips 201.

[0030] In this kind of waterproof document bag, the bag body is made of the waterproof bag sheet 1, and the bag body itself has good waterproof performance. After the embedding strip 201 is embedded into the clamping groove 301, a primary seal is formed. There are no less than 2 embedding strips 201, and the number of the clamping grooves 301 is equal to the number of the embedding strips 201. Therefore, no less than 2 layers of seals can be formed at the bag opening of the bag body. When the document is put into the bag body, the good sealing of the document in the bag body can be ensured.

[0031] In this kind of waterproof document bag, due to the adoption of the semi-cylindrical embedding strip 201, the semi-cylindrical embedding strip 201 is generally linear. The linear embedding strip 201 is not easily broken compared with a U-shaped structure, and it is more reliable in use.

[0032] Specifically, both the first flexible sheet 2 and the second flexible sheet 3 are formed on the basis of a mixture of PP and PE. The embedding strip 201 is integrally formed with the first flexible sheet 2.

[0033] In this kind of waterproof document bag, the structure of the clamping groove 301 is adapted to the embedding strip 201, and its structure is also generally semi-circular. The embedding strip 201 can be completely inserted into the clamping groove 301.

[0034] In summary, this waterproof document bag uses the semi-cylindrical embedding strip 201 in cooperation with the engaging groove 301 for sealing, with good sealing effect, and the embedding strip 201 is not easily broken, making it more reliable in use.

[0035] As shown in the Figure 1 and the Figure 2 accompanying drawings, the embedding strips 201 are in a parallel and non-contact state, and the engaging grooves 301 are in a parallel and non-contact state.

[0036] As shown in the Figure 1 and the Figure 2 accompanying drawings, the waterproof bag sheet 1 includes a layer of aluminum oxide-coated PET film 101, a paper layer 104, and a heat-sealing film layer 107. The aluminum oxide-coated PET film layer 101 and the heat-sealing film layer 107 are respectively arranged on both sides of the paper layer 104.

[0037] The inclusion of the aluminum oxide-coated PET film layer 101 in the waterproof bag sheet 1 can ensure that the entire waterproof bag sheet 1 has good barrier properties and light impermeability. The entire waterproof bag sheet 1 has good waterproof performance and is not easily punctured.

[0038] Specifically, the aluminum oxide-coated PET film layer 101 is located on the outer wall of the bag body, while the heat-sealing film layer 107 is located on the inner wall of the bag body. Both the first flexible sheet 2 and the second flexible sheet 3 are arranged on the heat-sealing film layer 107.

[0039] As shown in the Figure 1 and the Figure 2 accompanying drawings, it also includes a first polyurethane adhesive layer 103 and a second polyurethane adhesive layer 105. The first polyurethane adhesive layer 103 is arranged between the aluminum oxide-coated PET film layer 101 and the paper layer 104, and the second polyurethane adhesive layer 105 is arranged between the paper layer 104 and the heat-sealing film layer 107.

[0040] The functions of the first polyurethane adhesive layer 103 and the second polyurethane adhesive layer 105 are to play an adhesive role.

[0041] As shown in the Figure 1 and the Figure 2 accompanying drawings, it also includes a printing layer 102. The printing layer 102 is arranged on the PET film layer, and the printing layer 102 is located between the aluminum oxide-coated PET film layer 101 and the first polyurethane adhesive layer 103.

[0042] As shown in the Figure 1 and the Figure 2 accompanying drawings, it also includes a laminating layer 106. The laminating layer 106 is arranged between the second polyurethane adhesive layer 105 and the heat-sealing film layer 107. The thickness of the laminating layer 106 is 20 μm. Specifically, the laminating is a PE laminating.

[0043] As shown in theFigure 1 and the attached Figure 2 As shown, the heat-sealing film layer 107 includes a PP film or a PE film.

[0044] As attached Figure 1 and the attached Figure 2 As shown, the thickness of the aluminum oxide-coated PET film layer 101 is 12.5 um, the thickness of the paper layer 104 is 80 um, and the thickness of the heat-sealing film layer 107 is 70 um.

[0045] The above-described embodiments only represent some embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A waterproof document bag, comprising a waterproof bag piece, wherein part of the wall surface of the waterproof bag piece is bonded together to form a bag body, and the bag body has a bag mouth, characterized in that, It further includes a first flexible sheet and a second flexible sheet. Both the first flexible sheet and the second flexible sheet are disposed on the inner wall of the bag body, and the first flexible sheet and the second flexible sheet are respectively located on both sides of the bag opening. The first flexible sheet is provided with an embedding strip, and the second flexible sheet is provided with a clamping groove. The embedding strip is semi-cylindrical, and the embedding strip is used for clamping and cooperating with the clamping groove. The number of the embedding strips is not less than 2, and the number of the clamping grooves is equal to the number of the embedding strips.

2. The waterproof document bag according to claim 1, characterized in that, The embedding strips are parallel and non-contact with each other, and the clamping grooves are parallel and non-contact with each other.

3. A waterproof document bag according to claim 1, wherein, The waterproof bag sheet includes an aluminum oxide-coated PET film layer, a paper layer, and a heat-sealing film layer. The aluminum oxide-coated PET film layer and the heat-sealing film layer are respectively disposed on both sides of the paper layer.

4. A waterproof document bag according to claim 3, characterized in that, It further includes a first polyurethane adhesive layer and a second polyurethane adhesive layer. The first polyurethane adhesive layer is disposed between the aluminum oxide-coated PET film layer and the paper layer, and the second polyurethane adhesive layer is disposed between the paper layer and the heat-sealing film layer.

5. The waterproof document bag according to claim 4, characterized in that, It further includes a printing layer. The printing layer is disposed on the PET film layer, and the printing layer is located between the aluminum oxide-coated PET film layer and the first polyurethane adhesive layer.

6. A waterproof document bag according to claim 4, characterized in that, It further includes a coating layer. The coating layer is disposed between the second polyurethane adhesive layer and the heat-sealing film layer, and the thickness of the coating layer is 20um.

7. A waterproof document bag according to claim 3, characterized in that, The heat-sealing film layer includes a PP film or a PE film.

8. A waterproof document bag according to claim 3, wherein, The thickness of the aluminum oxide-coated PET film layer is 12.5um, the thickness of the paper layer is 80um, and the thickness of the heat-sealing film layer is 70um.

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