A double layer kraft paper bag

Abstract

The utility model provides a double -deck kraft paper bag, including the bag body, the lateral wall of bag body is double -deck kraft paper structure, wherein, the double -deck kraft paper structure of the lateral wall of constitution bag body, between the inner layer kraft paper and the outer layer kraft paper of it is through the point matrix distribution's glue point bonding fixed, and between the inner layer kraft paper and the outer layer kraft paper of the bag mouth outer rim of bag body is through the glue layer and forms seamless bonding. Thus, guarantee the inner layer kraft paper and the outer layer kraft paper of lateral wall can be close -fitting also have certain gap, when sharp article punctures the inner layer kraft paper, its outer layer kraft paper can effectively avoid and will not be punctured once, effectively increase the reliability of this kraft paper bag.

Description

Technical Field

[0001] This utility model relates to a double-layer kraft paper bag. Background Technology

[0002] Kraft paper bags are packaging containers made of composite materials or pure kraft paper. They are non-toxic, odorless, pollution-free, low-carbon, and environmentally friendly, meeting national environmental standards. They are high-strength and environmentally friendly, making them one of the most popular environmentally friendly packaging materials internationally. In existing technologies, to further improve the load-bearing capacity of kraft paper bags, a double-layer kraft paper structure is designed, with the inner and outer layers of kraft paper glued together. While this improves the load-bearing capacity, they are still prone to tearing easily when containing sharp objects. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a double-layer kraft paper bag.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A double-layer kraft paper bag includes a bag body, wherein the sidewall of the bag body is a double-layer kraft paper structure. In the double-layer kraft paper structure constituting the sidewall of the bag body, the inner layer of kraft paper and the outer layer of kraft paper are bonded and fixed by adhesive dots distributed in a dot matrix. Furthermore, at the outer edge of the bag opening, the inner layer of kraft paper and the outer layer of kraft paper are bonded together by an adhesive layer to form a seamless bond.

[0006] Furthermore, the sidewall of the bag body includes at least a front bag side and a rear bag side disposed opposite to each other, and the rear bag side extends with a cap.

[0007] Furthermore, the cover is also a double-layer kraft paper structure, and the double-layer kraft paper constituting the cover is fixed and bonded by an adhesive layer applied to the entire surface.

[0008] Furthermore, an adhesive strip is provided on the front side of the cover.

[0009] Furthermore, there are two adhesive strips, and the cap has two easy-tear lines between the two adhesive strips, with an easy-tear strip bonded between the two easy-tear lines.

[0010] Furthermore, the sidewall of the bag body also includes a left bag side and a right bag side, the left bag side is connected to the left side of the front bag side and the rear bag side, the right bag side is connected to the right side of the front bag side and the rear bag side, and the bag body also has a bottom bag side, the bottom bag side is connected to the bottom of the sidewall of the bag body.

[0011] Furthermore, the bottom side of the bag is formed by bonding and fixing tongues extending from the side wall of the bag together.

[0012] Furthermore, the flap extending from the side wall of the bag is also a double-layer kraft paper structure, with the inner and outer layers of kraft paper bonded together by a full-surface adhesive layer.

[0013] The technical solution provided by this utility model has the following beneficial effects:

[0014] In the double-layer kraft paper structure that makes up the side wall of the bag, the inner and outer layers of kraft paper are bonded and fixed together by adhesive dots distributed in a dot matrix. In this way, the inner and outer layers of kraft paper on the side wall can be tightly attached while still having a certain gap. When a sharp object punctures the inner layer of kraft paper, the outer layer of kraft paper can be effectively avoided and prevented from being punctured in one go. This effectively increases the reliability of the kraft paper bag. Attached Figure Description

[0015] Figure 1 The diagram shown is a structural schematic of the double-layer kraft paper bag in the open state in the embodiment.

[0016] Figure 2 The diagram shown is a structural schematic of the inner and outer kraft paper of the double-layer kraft paper bag in the embodiment, in the separated state.

[0017] Figure 3 The diagram shown is a structural schematic of the double-layer kraft paper bag in its stored state in the embodiment. Detailed Implementation

[0018] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0019] In the description of this invention, terms such as "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] Reference Figures 1 to 3As shown, this embodiment provides a double-layer kraft paper bag, including a bag body. In this specific embodiment, the bag body is composed of side walls and a bottom bag side 15. The side walls of the bag body include a front bag side 11, a rear bag side 12, a left bag side 13, and a right bag side 14. The front bag side 11 and the rear bag side 12 are arranged opposite each other. The left bag side 13 connects to the left side of the front bag side 11 and the rear bag side 12, and the right bag side 14 connects to the right side of the front bag side 11 and the rear bag side 12. The bottom bag side 15 connects to the bottom of the side walls of the bag body. This allows the bag body to form a receiving cavity with a certain width, such as... Figure 1 As shown.

[0022] The sidewall of the bag is a double-layer kraft paper structure. The inner kraft paper 1 and the outer kraft paper 2 are bonded and fixed together by adhesive dots 3 distributed in a dot matrix. At the outer edge of the bag opening 101, the inner kraft paper 1 and the outer kraft paper 12 are bonded together by an adhesive layer 4 to form a seamless bond. That is, at the bag opening 101, an adhesive layer 4 is applied between the inner kraft paper 1 and the outer kraft paper 2 to completely bond the inner kraft paper 1 and the outer kraft paper 2 without leaving any gaps.

[0023] In the double-layer kraft paper structure that makes up the sidewall of the bag, the inner kraft paper 1 and the outer kraft paper 2 are bonded and fixed together by adhesive dots 3 distributed in a dot matrix. In this way, the inner kraft paper 1 and the outer kraft paper 2 of the sidewall can be tightly attached while still having a certain gap. When a sharp object punctures the inner kraft paper 1, the outer kraft paper 2 can be effectively avoided and prevented from being punctured in one go. Specifically, when the inner kraft paper 1 is punctured, although it is possible to puncture the outer kraft paper 2 again in some cases, due to the gap between the inner kraft paper 1 and the outer kraft paper 2, there is a high probability that the sharp object will shift its position and will not puncture the outer kraft paper 2 again. This effectively increases the reliability of the kraft paper bag.

[0024] Meanwhile, a seamless bond is formed between the inner kraft paper 1 and the outer kraft paper 2 at the outer edge of the bag opening 101 through an adhesive layer 4; a completely fixed bond is formed at the bag opening 101 to ensure that the inner kraft paper 1 and the outer kraft paper 2 will not separate.

[0025] Specifically, glue dot 3 refers to a colloid with a dot-like structure. Multiple glue dots 3 are distributed in a dot matrix, with a certain distance between adjacent glue dots 3. The dot matrix distribution can be a regular arrangement (i.e., glue dots 3 are arranged at equal intervals) or an irregular dot matrix distribution, etc.

[0026] Specifically, the bottom side 15 of the bag body is formed by sticking together tongues extending from the side wall of the bag body; wherein, the tongues extending from the side wall of the bag body are also double-layer kraft paper structures, and the inner layer and outer layer of kraft paper constituting the tongues are bonded together with a full-surface adhesive layer to ensure the bottom is firm.

[0027] Specifically, the left pocket side 13 and right pocket side 14 have vertical creases, as does the bottom of the front pocket side 11. This allows the left pocket side 13 and right pocket side 14 to be folded inwards and the bottom pocket side 15 to be folded upwards for storage when not in use. Figure 3 As shown.

[0028] Furthermore, in this embodiment, a cap 16 extends from the rear pocket side 12. The cap 16 is used to fold forward to cover the bag opening 101. Specifically, the cap 16 is a double-layer kraft paper structure. The cap 16 does not need to bear weight. Therefore, the double-layer kraft paper constituting the cap 16 can be fixed and bonded by a full-surface coated adhesive layer or by a dot-matrix distributed adhesive dots.

[0029] The front side of the cap 16 is provided with an adhesive strip 17. When the cap 16 is folded forward to cover the bag opening 101, it is adhered to the front bag side 11 by the adhesive strip 17 to achieve sealing.

[0030] Specifically, there are two adhesive strips 17, which are bonded together for a more secure hold. Simultaneously, the cap 16 has two tear lines between the two adhesive strips 17, and an easy-tear strip 18 is bonded between these lines. When opening is required, simply grasp the easy-tear strip 18 and tear it open; then, only one adhesive strip 17 needs to be separated to open the bag opening 101. This is a destructive opening method, making it a disposable item; used for envelopes and courier bags.

[0031] Of course, in other embodiments, when the double-layer kraft paper bag of this application is used as a compact envelope bag, the structure of the left pocket side 13, the right pocket side 14, and the bottom pocket side 15 may not be provided, that is, the bag body is directly formed by connecting the front pocket side 11 and the rear pocket side 12. Alternatively, the double-layer kraft paper bag can also be used as an everyday tote bag. When used as a tote bag, the above-mentioned sealing structure 15 may not be provided, and handles are connected to the front pocket side 11 and the rear pocket side 12 respectively to form a handle-type double-layer kraft paper bag.

[0032] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A double-layer kraft paper bag, comprising a bag body, wherein the sidewalls of the bag body are a double-layer kraft paper structure, characterized in that: In the double-layer kraft paper structure that makes up the side wall of the bag, the inner and outer layers of kraft paper are bonded and fixed by adhesive dots distributed in a dot matrix, so that the inner and outer layers of kraft paper on the side wall can be tightly attached while still having a certain gap; and at the outer edge of the bag opening, the inner and outer layers of kraft paper are bonded together by an adhesive layer to form a seamless bond.

2. The double-layer kraft paper bag according to claim 1, characterized in that: The sidewalls of the bag include at least a front bag side and a rear bag side arranged opposite to each other, with a cap extending from the rear bag side.

3. The double-layer kraft paper bag according to claim 2, characterized in that: The cover is also a double-layer kraft paper structure.

4. The double-layer kraft paper bag according to claim 3, characterized in that: The double-layered kraft paper constituting the cover is fixed and bonded by an adhesive layer applied to the entire surface; or, the double-layered kraft paper constituting the cover is fixed and bonded by adhesive dots distributed in a dot matrix.

5. The double-layer kraft paper bag according to claim 3, characterized in that: An adhesive strip is provided on the front side of the cover.

6. The double-layer kraft paper bag according to claim 5, characterized in that: The number of adhesive strips is two, and the cover has two easy-tear lines between the two adhesive strips, with an easy-tear strip bonded between the two easy-tear lines.

7. The double-layer kraft paper bag according to claim 2, characterized in that: The sidewall of the bag body also includes a left bag side and a right bag side. The left bag side connects to the left side of the front bag side and the rear bag side, and the right bag side connects to the right side of the front bag side and the rear bag side. The bag body also has a bottom bag side, which is connected to the bottom of the sidewall of the bag body.

8. The double-layer kraft paper bag according to claim 7, characterized in that: The bottom side of the bag is formed by attaching and fixing tongues extending from the side wall of the bag together.

9. The double-layer kraft paper bag according to claim 8, characterized in that: The flap extending from the side wall of the bag is also a double-layer kraft paper structure, with the inner and outer layers of kraft paper bonded together by a full-surface adhesive layer.

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