Scroll type snack packaging bag

By designing a roll-top snack packaging bag and adopting a roll-top structure with multi-layer film materials and flexible sealing parts, the problems of small bag capacity and loose sealing are solved, and a snack packaging bag with large capacity, good sealing and good visual effects is achieved.

CN223356308UActive Publication Date: 2025-09-19DONGGUAN SUN PAK PACKING PROD LTD
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Patent Information

Application Number
CN202422687770.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-05
Publication Date
2025-09-19
Estimated Expiration
2034-11-05

AI Technical Summary

Technical Problem

Existing snack packaging bags have the problems of small bag capacity, loose sealing, easy entry of external dust and water vapor, and poor visual effect.

Method used

A roll-top snack packaging bag is designed. The bag body structure consists of a front bag piece, a back bag piece, a left bag piece, a right bag piece and a bottom bag piece. The bag is sealed by a roll-top method of a flexible sealing piece. A flexible metal wire is provided inside the flexible sealing piece, which is combined with a heat sealing strip to achieve a stable seal. Multi-layer film materials are used to improve the sealing and visual effects.

Benefits of technology

It achieves a larger bag capacity and convenient sealing and opening operations, minimizing the entry of dust and moisture and maintaining a good visual effect.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223356308U_ABST
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Abstract

The utility model discloses an edge rolling type snack packaging bag, and relates to the technical field of packaging bags. The bag comprises a bag body, a bag opening is formed in the upper end of the bag body, and the bag body comprises a front bag piece, a rear bag piece, a left bag piece, a right bag piece, a lower bag piece and a flexible sealing piece. The front bag piece, the rear bag piece, the left bag piece, the right bag piece and the lower bag piece are connected in a heat sealing mode. A bonding strip is arranged at the lower end of the flexible sealing piece and bonded with the upper end of the rear bag piece, a flexible strip is arranged at the upper end of the flexible sealing piece, a flexible metal wire extending in the left-right direction is arranged in the flexible strip, the length direction of the flexible strip is parallel to the end portion of the upper end of the rear bag piece, and the left end of the flexible strip extends out of the left end of the rear bag piece. And the right end of the flexible strip extends out of the right end of the rear bag piece. The bag body is large in capacity and can be sealed in a rolling mode, sealing and opening are facilitated, external dust and water vapor can be prevented from entering the bag body to the maximum extent after sealing, and the visual effect of the bag body is good.
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Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, in particular to a roll-mouth snack packaging bag. Background Art

[0002] In the prior art, packaging bags for bulk snacks mainly include open bags, ziplock bags, drawstring bags, etc. Open bags are easy to enter dust and moisture from the outside and can only be used to package ready-to-eat snacks. The bag body of a zipper bag usually includes a front bag piece and a rear bag piece, the left end, right end and lower end of the front bag piece and the rear bag piece are connected to each other, and the upper ends of the front bag piece and the rear bag piece are respectively installed with a front zipper and a rear zipper. The bag body can be sealed and opened by clamping or loosening the front zipper and the rear zipper. However, the zipper bag has the following main technical problems: (1) The bag body capacity is small. Since the zipper bag can only use the front zipper and the rear zipper on the front bag piece and the rear bag piece to seal and open, the zipper bag cannot be equipped with a left bag piece and a right bag piece (because the upper ends of the left bag piece and the right bag piece cannot be clamped and sealed by the front zipper and the rear zipper), which makes the bag body of the zipper bag easy to be small; (2) The front zipper and the rear zipper of the zipper bag often have the problem of opening due to loose clamping, and external dust and moisture can easily enter the bag body through the zipper. Drawstring bags have poor visual effects and are prone to openings due to loose drawstrings. External dust and moisture can easily enter the bag through the openings. In addition, the tightly drawn bag is difficult to open, and you often need to tear the bag open by hand to take out the snacks, which is inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a roll-mouth snack packaging bag based on the above-mentioned deficiencies of the existing technology. The bag body of the snack bag has a large capacity and can be sealed in a roll-mouth manner, which is convenient for sealing and opening. After sealing, it can prevent external dust and water vapor from entering the bag body to the greatest extent, and the bag body has a good visual effect.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a roll-top snack packaging bag, comprising a bag body, an upper end of the bag body is provided with a bag opening, the bag body comprises a front bag sheet, a rear bag sheet, a left bag sheet, a right bag sheet, a lower bag sheet and a flexible sealing member; the left end of the front bag sheet is heat-sealed to the front end of the left bag sheet, the right end of the front bag sheet is heat-sealed to the front end of the right bag sheet, the lower end of the front bag sheet is heat-sealed to the front end of the lower bag sheet, the left end of the rear bag sheet is heat-sealed to the rear end of the left bag sheet, the right end of the rear bag sheet is heat-sealed to the rear end of the right bag sheet, and the rear bag sheet is heat-sealed to the rear end of the right bag sheet. The lower end of the left bag piece is heat-sealed to the rear end of the lower bag piece, the lower end of the left bag piece is heat-sealed to the left end of the lower bag piece, and the lower end of the right bag piece is heat-sealed to the right end of the lower bag piece; the lower end of the flexible sealing member is an adhesive strip, which is adhered to the upper end of the rear bag piece, and the upper end of the flexible sealing member is a flexible strip, in which a flexible metal wire extending in the left and right directions is provided, and the length direction of the flexible strip is parallel to the upper end of the rear bag piece, the left end of the flexible strip extends beyond the left end of the rear bag piece, and the right end of the flexible strip extends beyond the right end of the rear bag piece.

[0005] In the above technical solution, the flexible sealing member comprises two mutually bonded paper layers, and the flexible metal wire is tightly arranged between the two paper layers of the flexible strip. There are two flexible metal wires, and the two flexible metal wires are parallel to each other.

[0006] In the above technical solution, the connection between the front bag piece and the left bag piece has a heat sealing strip, the connection between the front bag piece and the right bag piece has a heat sealing strip, the connection between the front bag piece and the lower bag piece has a heat sealing strip, the connection between the rear bag piece and the left bag piece has a heat sealing strip, the connection between the rear bag piece and the right bag piece has a heat sealing strip, the connection between the rear bag piece and the lower bag piece has a heat sealing strip, the connection between the left bag piece and the lower bag piece has a heat sealing strip, and the connection between the right bag piece and the lower bag piece has a heat sealing strip.

[0007] In the above technical solution, the front, rear, left, right, and lower bag panels, respectively, comprise, from the inside out, a CPP (chlorinated polypropylene) film layer, a VMPET (aluminized polyester) film layer, and a PET (polyethylene terephthalate) film layer. The CPP film layer has a thickness of 18 to 22 μm, the VMPET (aluminized polyester) film layer has a thickness of 11 to 13 μm, and the PET (polyethylene terephthalate) film layer has a thickness of 33 to 37 μm.

[0008] In the above technical solution, the VMPET polyester aluminum-plated film layer includes a PET polyethylene terephthalate base material layer and an aluminum film layer plated on the PET polyethylene terephthalate base material layer.

[0009] The beneficial effects of the present invention are as follows: (1) Since the bag body of the present invention includes not only the front bag piece, the rear bag piece, but also the left bag piece, the right bag piece and the lower bag piece, the bag body of the present invention has a larger capacity. Under the condition of the same front bag piece size, the bag body of the present invention can hold more snacks than the ziplock bag in the prior art; (2) Since the lower end of the flexible sealing member of the present invention is an adhesive strip, the adhesive strip is bonded to the upper end of the rear bag piece, and the upper end of the flexible sealing member is a flexible strip, a flexible metal wire extending in the left and right directions is provided inside the flexible strip, and the length direction of the flexible strip is parallel to the upper end of the rear bag piece, the left end of the flexible strip extends beyond the left end of the rear bag piece, and the right end of the flexible strip extends to the left end of the rear bag piece. The end extends out of the right end of the rear bag piece. Therefore, the utility model can use the flexible sealing member to roll the upper end of the bag body downward to roll up the bag mouth. After rolling up, the left and right ends of the flexible strip are bent and pressed onto the upper end of the front bag piece or the rear bag piece, so that the upper end of the bag body can be firmly sealed. The sealing is convenient, and after sealing, the external dust and moisture can be prevented from entering the bag body to the greatest extent. (3) When the bag body of the utility model needs to be opened, the left and right ends of the flexible strip are first straightened, and then the rolled bag mouth is pulled back to open the bag body. The bag body can be opened, which is convenient to open. (4) The utility model roll-mouth snack bag adopts the roll-mouth method, which does not destroy the overall visual effect of the bag body and has a good visual effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the front side of the present invention.

[0011] Figure 2 This is a schematic diagram of the dispersed structure of the utility model.

[0012] Figure 3 This is a schematic diagram of the rolling process of the present invention.

[0013] Figure 4 This is a schematic diagram of the hierarchical structure of the front bag piece, the back bag piece, the left bag piece, the right bag piece and the lower bag piece. DETAILED DESCRIPTION

[0014] The structural principle and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0015] like Figure 1-Figure 4As shown, the utility model is a roll-top snack packaging bag, comprising a bag body, with a bag opening at the upper end of the bag body, the bag body comprising a front bag sheet 1, a rear bag sheet 2, a left bag sheet 3, a right bag sheet 4, a lower bag sheet 5 and a flexible sealing member 6; the left end of the front bag sheet 1 is heat-sealed to the front end of the left bag sheet 3, the right end of the front bag sheet 1 is heat-sealed to the front end of the right bag sheet 4, the lower end of the front bag sheet 1 is heat-sealed to the front end of the lower bag sheet 5, the left end of the rear bag sheet 2 is heat-sealed to the rear end of the left bag sheet 3, the right end of the rear bag sheet 2 is heat-sealed to the rear end of the right bag sheet 4, and the lower end of the rear bag sheet 2 is heat-sealed to the rear end of the lower bag sheet 5 The lower end of the left bag sheet 3 is heat-sealed to the left end of the lower bag sheet 5, and the lower end of the right bag sheet 4 is heat-sealed to the right end of the lower bag sheet 5. The lower end of the flexible sealing member 6 is an adhesive strip 61, which is bonded to the upper end of the rear bag sheet 2. The upper end of the flexible sealing member 6 is a flexible strip 62, and a flexible metal wire 63 extending in the left-right direction is provided inside the flexible strip 62. The length direction of the flexible strip 62 is parallel to the upper end of the rear bag sheet 2. The left end of the flexible strip 62 extends beyond the left end of the rear bag sheet 2, and the right end of the flexible strip 62 extends beyond the right end of the rear bag sheet 2. The bag body of the utility model has a large capacity and can be sealed in a rolled-up manner, which is convenient for sealing and opening. After sealing, it can prevent external dust and moisture from entering the bag body to the greatest extent, and the bag body has a good visual effect.

[0016] The method of using the roll and opening of the utility model is as follows: Figure 3 When sealing is required, first use the flexible sealing member 6 to roll the upper end of the bag downward to close the bag opening. 1-5 turns are recommended. The more turns, the better the sealing performance, but the bag capacity will also be reduced. Generally, 1-2 turns are sufficient. Next, bend the left and right ends of the flexible strip 62 and press them onto the upper end of the front bag piece 1 or the rear bag piece 2 to securely seal the upper end of the bag. When opening is required, first straighten the left and right ends of the flexible strip, then pull the rolled bag opening back to open the bag.

[0017] As a preferred embodiment of the present invention, Figure 1-Figure 3 As shown, the flexible sealing member 6 comprises two mutually bonded paper layers, and the flexible metal wire 63 is tightly disposed between the two paper layers of the flexible strip 62. Furthermore, there are two flexible metal wires 63, which are parallel to each other.

[0018] As a preferred embodiment of the present invention, Figure 1 and Figure 3As shown, the connection between the front bag piece 1 and the left bag piece 3 has a heat sealing strip 7, the connection between the front bag piece 1 and the right bag piece 4 has a heat sealing strip 7, the connection between the front bag piece 1 and the lower bag piece 5 has a heat sealing strip 7, the connection between the rear bag piece 2 and the left bag piece 3 has a heat sealing strip 7, the connection between the rear bag piece 2 and the right bag piece 4 has a heat sealing strip 7, the connection between the rear bag piece 2 and the lower bag piece 5 has a heat sealing strip 7, the connection between the left bag piece 3 and the lower bag piece 5 has a heat sealing strip 7, and the connection between the right bag piece 4 and the lower bag piece 5 has a heat sealing strip 7.

[0019] As a preferred embodiment of the present invention, Figure 4 As shown, the front bag sheet 1, the back bag sheet 2, the left bag sheet 3, the right bag sheet 4 and the lower bag sheet 5 respectively include, from the inside to the outside, a CPP chlorinated polypropylene film layer 8, a VMPET polyester aluminized film layer 9 and a PET polyethylene terephthalate film layer 10. The CPP chlorinated polypropylene film layer 8 of the present invention has good heat sealing performance and flexibility, and has a good heat sealing effect, effectively preventing the problem of juicy snacks leaking in the bag body; the VMPET polyester aluminized film layer 9 of the present invention has a bright metallic gloss, good visual effect, excellent gas and light barrier properties, and good moisture resistance, heat resistance, water and gas barrier, a certain reflectivity, and can block infrared rays, ultraviolet rays, etc.; the PET polyethylene terephthalate film layer 10 of the present invention is non-toxic, odorless, high temperature resistant, and corrosion resistant, effectively protecting food from the influence of the external environment, extending the shelf life, and is easy to recycle and reuse, meeting current environmental protection requirements, and also has good transparency and glossiness, which can enhance the display effect of the product.

[0020] As a preferred embodiment of the present invention, Figure 4 As shown, the thickness of the CPP chlorinated polypropylene film layer 8 is 18-22 μm, preferably 20 μm; the thickness of the VMPET polyester aluminum-plated film layer 9 is 11-13 μm, preferably 12 μm; the thickness of the PET polyethylene terephthalate film layer 10 is 33-37 μm, preferably 35 μm.

[0021] As a preferred embodiment of the present invention, the VMPET polyester aluminum-plated film layer 9 includes a PET polyethylene terephthalate base material layer 91 and an aluminum film layer 92 plated on the PET polyethylene terephthalate base material layer 91 .

[0022] The above description is only a preferred embodiment of the present invention. Any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A roll-top snack packaging bag, comprising a bag body, an upper end of which is provided with a bag opening, characterized in that: The bag body includes a front bag sheet, a back bag sheet, a left bag sheet, a right bag sheet, a lower bag sheet and a flexible sealing member; the left end of the front bag sheet is heat-sealed to the front end of the left bag sheet, the right end of the front bag sheet is heat-sealed to the front end of the right bag sheet, the lower end of the front bag sheet is heat-sealed to the front end of the lower bag sheet, the left end of the back bag sheet is heat-sealed to the rear end of the left bag sheet, the right end of the back bag sheet is heat-sealed to the rear end of the right bag sheet, the lower end of the back bag sheet is heat-sealed to the rear end of the lower bag sheet, and the lower end of the left bag sheet is heat-sealed to the The left end of the lower bag piece is heat-sealed and connected, and the lower end of the right bag piece is heat-sealed and connected to the right end of the lower bag piece; the lower end of the flexible sealing member is an adhesive strip, which is bonded to the upper end of the rear bag piece, and the upper end of the flexible sealing member is a flexible strip, in which a flexible metal wire extending in the left and right directions is provided, and the length direction of the flexible strip is parallel to the upper end of the rear bag piece, the left end of the flexible strip extends beyond the left end of the rear bag piece, and the right end of the flexible strip extends beyond the right end of the rear bag piece.

2. The roll-top snack packaging bag according to claim 1, characterized in that: The flexible sealing member comprises two mutually bonded and compounded paper sheets, and the flexible metal wire is tightly arranged between the two paper sheets of the flexible strip.

3. The roll-top snack packaging bag according to claim 1, characterized in that: There are two flexible metal wires, and the two flexible metal wires are parallel to each other.

4. The roll-top snack packaging bag according to claim 1, characterized in that: The connection between the front bag piece and the left bag piece is provided with a heat seal strip, the connection between the front bag piece and the right bag piece is provided with a heat seal strip, the connection between the front bag piece and the lower bag piece is provided with a heat seal strip, the connection between the back bag piece and the left bag piece is provided with a heat seal strip, the connection between the back bag piece and the right bag piece is provided with a heat seal strip, the connection between the back bag piece and the lower bag piece is provided with a heat seal strip, the connection between the left bag piece and the lower bag piece is provided with a heat seal strip, and the connection between the right bag piece and the lower bag piece is provided with a heat seal strip.

5. The roll-top snack packaging bag according to claim 1, characterized in that: The front bag piece, the back bag piece, the left bag piece, the right bag piece and the lower bag piece respectively include a CPP chlorinated polypropylene film layer, a VMPET polyester aluminized film layer and a PET polyethylene terephthalate film layer in sequence from the inside to the outside.

6. The roll-top snack packaging bag according to claim 5, characterized in that: The thickness of the CPP chlorinated polypropylene film layer is 18 to 22 μm, the thickness of the VMPET polyester aluminum-plated film layer is 11 to 13 μm, and the thickness of the PET polyethylene terephthalate film layer is 33 to 37 μm.

7. The roll-top snack packaging bag according to claim 6, characterized in that: The thickness of the CPP chlorinated polypropylene film layer is 20 μm, the thickness of the VMPET polyester aluminum-plated film layer is 12 μm, and the thickness of the PET polyethylene terephthalate film layer is 35 μm.

8. The roll-top snack packaging bag according to claim 5, characterized in that: The VMPET polyester aluminum-plated film layer comprises a PET polyethylene terephthalate base material layer and an aluminum film layer plated on the PET polyethylene terephthalate base material layer.