Kraft paper hand bag

By combining internal and external connectors and designing a waterproof layer, the problem of loose connection between the handle and the bag body of kraft paper tote bags is solved, improving load-bearing capacity and service life, and ensuring the safety of the items.

CN224155241UActive Publication Date: 2026-04-24QINGDAO XINHEXING PRINTING & PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO XINHEXING PRINTING & PACKAGING CO LTD
Filing Date
2025-06-13
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

The small contact area between the handle and the bag body of existing kraft paper tote bags leads to excessive pressure, which can easily tear the bag body, affecting its service life and the safety of the goods.

Method used

The bag employs a combination structure of internal and external connectors, which are connected by connecting rods, locking blocks, gears and racks to increase the tightness of the connection between the handle and the bag body. The inner and outer waterproof layers protect the kraft paper layer and improve friction and load-bearing capacity.

Benefits of technology

It enhances the tightness of the connection between the handle and the bag body, disperses stress, improves the load-bearing capacity of the bag body, prevents tearing, extends service life, and ensures the safety of the items.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of hand bags, in particular to a kraft paper hand bag which is characterized in that a hand lifting component is arranged at the top of a bag body, the hand lifting component comprises a stress piece and a hand lifting belt, the upper surface of the stress piece is fixedly connected with the hand lifting belt, the kraft paper hand bag further comprises an inner connecting piece, and a buckling groove is formed in the side surface of the inner connecting piece. Connecting rods are fixedly connected to the inner walls of the buckling grooves, and clamping grooves are formed in the ends, away from the buckling grooves, of the connecting rods, so that the acting force of the multiple connecting rods on the bag body and the lifting handle is borne at the same time through mutual connection between the inner connecting pieces and the outer connecting pieces, and the tightness of connection between the lifting handle and the bag body is improved; and stress borne by the bag body lifting handle can be dispersed and borne, so that the bearing capacity of the bag body to heavy objects is improved, meanwhile, the friction force and the stress area of the two connecting pieces to the bag body can be increased through connection of the inner connecting piece and the outer connecting piece, the stress of the bag body can be dispersed, and the bearing capacity of the bag body is further improved.
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Description

Technical Field

[0001] This utility model relates to the field of tote bags, and more particularly to a kraft paper tote bag. Background Technology

[0002] Kraft paper tote bags are a type of packaging product. Due to their advantages such as being environmentally friendly, low-cost, and recyclable, they are widely used in various scenarios such as shopping and gift packaging. Among them, the leather handles connect the user to the bag, making it convenient for the user to carry the kraft paper tote bag, while also bearing the weight of the items inside the bag. They are the key components that realize the portability function of the tote bag.

[0003] After searching, it was found that the utility model application with application number CN202220086589.1 provides a kraft paper shopping bag. Its curved handle can not only improve the stability and comfort of carrying, but also improve the flexibility and convenience of use. The interlocking of the curved handle with the bag body can also improve the security of the items, thereby increasing the versatility of the shopping bag's functions.

[0004] However, due to the small contact area between the handle and the bag body during use, the pressure between the bag body and the handle is relatively large when the bag is under heavy load. This can easily cause the bag body to tear, which will not only damage the bag body and render it unusable, but also cause the items inside the bag to fall out, resulting in damage and financial loss. Utility Model Content

[0005] The purpose of this utility model is to provide a kraft paper tote bag that solves the problem of poor connection between the handle and the bag body, increases the tightness of the connection between the handle and the bag body, and thus improves the bag's load-bearing capacity.

[0006] To achieve the above objectives, this utility model provides a kraft paper tote bag, comprising: a bag body, a handle component provided at the top of the bag body, the handle component including a force-bearing component and a handle strap, the upper surface of the force-bearing component being fixedly connected to the handle strap;

[0007] It also includes an inner connector; the side surface of the inner connector is provided with a fastening groove, a connecting rod is fixedly connected to the inner wall of the fastening groove, a slot is provided at the end of the connecting rod away from the fastening groove, an outer connector is snapped onto the front end of the connecting rod, a locking block is slidably connected to the inner surface of the outer connector, a rack is fixedly connected to the side surface of the locking block, a gear is meshed with the tooth surface of the rack, a rotating shaft is fixedly connected to the inner surface of the gear, a knob is fixedly connected to the end of the rotating shaft away from the gear, a spring is provided between the two racks, and through holes are provided on the bag body, the force-bearing component, and the outer connector.

[0008] The bag body includes an inner waterproof layer, a kraft paper layer, and an outer waterproof layer. The inner and outer waterproof layers are respectively bonded and fixed to both sides of the kraft paper layer with composite adhesive. This allows the inner and outer waterproof layers to protect the inner kraft paper layer, preventing water from affecting its load-bearing capacity and extending the service life of the kraft paper bag.

[0009] Both the inner and outer waterproof layers are made of water-based polyurethane coatings, which improve waterproof performance while meeting the requirements for biodegradability and enhancing environmental performance.

[0010] The bag has viewing windows on both sides, which are made of PET film to ensure the bag's flexibility and load-bearing capacity while facilitating observation of the contents.

[0011] The outer surface of the force-bearing component engages with the fastening groove, and the outer surface of the handle engages with the fastening groove, which facilitates the fastening of the handle and the force-bearing component, thereby storing the handle and the force-bearing component. This prevents the handle and the force-bearing component from obstructing the inner connector and affecting the fit between the inner connector and the bag body, and facilitates a tight fit between the inner connector and the bag body, increasing friction.

[0012] The outer surface of the connecting rod is adapted to the through hole, and the outer surface of the connecting rod extends to the outer side wall of the outer connector, so that the connecting rod passes through the through hole to connect the force-bearing component, the bag body and the outer connector.

[0013] The outer surface of the locking block engages with the slot, and the outer surface of the connecting rod slides with the locking block. This facilitates the movement of the locking block when the connecting rod is inserted into the external connector, making it easier for the connecting rod to be inserted and for the locking block to engage with the slot to restrict the connecting rod.

[0014] The outer surface of the rotating shaft is rotatably connected to the outer connecting member, and the outer surface of the rack is slidably connected to the outer connecting member, so that the rotation of the rotating shaft can drive the rack to move through the meshing connection of the gear and the rack to adjust the position of the locking block.

[0015] This utility model discloses a kraft paper tote bag. Through the interconnection between the inner and outer connecting parts, multiple connecting rods simultaneously bear the force between the bag body and the handle. This not only increases the tightness of the connection between the handle and the bag body, but also disperses the stress on the bag body and handle, thereby improving the bag's load-bearing capacity. At the same time, the connection between the inner and outer connecting parts also increases the friction and force-bearing area between the two connecting parts and the bag body, which can further disperse the force on the bag body and improve its load-bearing capacity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is an overall structural diagram of the present invention.

[0018] Figure 2 This is a cross-sectional view of the present invention.

[0019] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0020] Figure 4 This is a partial exploded view of the structure of this utility model.

[0021] In the diagram: 1. Bag body; 2. Inner connector; 3. Fastening groove; 4. Load-bearing component; 5. Handle; 6. Connecting rod; 7. Slot; 8. Outer connector; 9. Locking block; 10. Rack; 11. Gear; 12. Shaft; 13. Knob; 14. Spring; 15. Through hole; 16. Inner waterproof layer; 17. Kraft paper layer; 18. Outer waterproof layer; 19. Viewing window. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] The first embodiment of this application is as follows:

[0024] Please see Figures 1-4 The double-sealed shut-off valve of this embodiment includes: a bag body 1, with viewing windows 19 on both sides of the bag body 1. The viewing windows 19 are made of PET film, which ensures the softness and load-bearing capacity of the bag body 1 while facilitating the observation of the internal items. The bag body 1 includes an inner waterproof layer 16, a kraft paper layer 17, and an outer waterproof layer 18. The inner waterproof layer 16 and the outer waterproof layer 18 are respectively glued and fixed to both sides of the kraft paper layer 17 with composite adhesive, so that the inner kraft paper layer 17 can be protected by the inner waterproof layer 16 and the outer waterproof layer 18. The inner waterproof layer 16 and the outer waterproof layer 18 are both made of water-based polyurethane coating, which avoids the kraft paper layer 17 from contacting water and affecting its load-bearing capacity. At the same time, it can also protect the kraft paper layer 17 and extend the service life of the kraft paper bag. A handle is provided at the top of the bag body 1. The handle includes a force-bearing component 4 and a handle 5. The upper surface of the force-bearing component 4 is fixedly connected to the handle 5.

[0025] It also includes an inner connector 2, whose side surface is provided with a fastening groove 3. The outer surface of the force-bearing component 4 engages with the fastening groove 3, and the outer surface of the handle 5 engages with the fastening groove 3, facilitating the fastening of the handle 5 and the force-bearing component 4. This allows for the storage of the handle 5 and the force-bearing component 4, preventing the handle 5 and the force-bearing component 4 from obstructing the inner connector 2 and affecting the fit between the inner connector 2 and the bag body 1. This ensures a tight fit between the inner connector 2 and the bag body 1 and increases friction. A connecting rod 6 is fixedly connected to the inner wall of the fastening groove 3. A slot 7 is provided at the end of the connecting rod 6 away from the fastening groove 3. An outer connector 8 is engaged with the front end of the connecting rod 6. A locking block 9 is slidably connected to the inner surface of the outer connector 8. The outer surface of the locking block 9 engages with the slot 7, and the outer surface of the connecting rod 6 slides against the locking block 9. This allows the connecting rod 6 to push the locking block 9 to move when it is inserted into the outer connector 8, facilitating the insertion of the connecting rod 6. This also facilitates the locking block 9 to engage with the locking slot 7 to restrict the connecting rod 6. A rack 10 is fixedly connected to the side surface of the locking block 9. A gear 11 is meshed with the tooth surface of the rack 10. A rotating shaft 12 is fixedly connected to the inner surface of the gear 11. The outer surface of the rotating shaft 12 is rotatably connected to the outer connecting member 8. The outer surface of the rack 10 is slidably connected to the outer connecting member 8. This allows the rotation of the rotating shaft 12 to drive the rack 10 to move through the meshing connection between the gear 11 and the rack 10, thereby adjusting the position of the locking block 9. A knob 13 is fixedly connected to the end of the rotating shaft 12 away from the gear 11. A spring 14 is provided between the two racks 10. Through holes 15 are provided on the bag body 1, the force-bearing member 4, and the outer connecting member 8. The outer surface of the connecting rod 6 is adapted to the through hole 15. The outer surface of the connecting rod 6 extends to the outer side wall of the outer connecting member 8, allowing the connecting rod 6 to pass through the through hole 15 to connect the force-bearing member 4, the bag body 1, and the outer connecting member 8.

[0026] When it is necessary to remove or replace the carrying strap 5, turn the knob 13 to drive the gear 11 to rotate through the shaft 12. Under the meshing action of the gear 11 and the rack 10, the rack 10 is moved, causing the locking block 9 to disengage from the slot 7, thus removing the restriction on the connecting rod 6. This allows the connecting rod 6 to be pulled out from the outer connector 8, separating the fastening groove 3 from the outer connector 8. The force-bearing component 4 can then be removed from the fastening groove 3 for replacement. During replacement, the force-bearing component 4 is connected to the connecting rod 6 through the through hole 15, and the force-bearing component 4 is engaged with the carrying strap 5. The connecting rod 6 passes through the through hole 15 on the bag body 1 and is inserted into the outer connector 8 through the through hole 15 on the outer connector 8. During the insertion process, the connecting rod 6 drives the locking block 9 to move, thereby driving the rack 10 to move and compress the spring 14. When the connecting rod 6 is fully inserted into the outer connector 8, the locking block 9 is flush with the locking groove 7. Under the action of the spring 14, the rack 10 and the locking block 9 are reset and locked into the locking groove 7 to restrict the position of the connecting rod 6, thereby ensuring the tightness of the connection between the inner connector 2 and the outer connector 8.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A kraft paper tote bag comprising: A bag body, wherein a handle is provided at the top of the bag body, characterized in that: the handle includes a force-bearing component and a handle strap, and the upper surface of the force-bearing component is fixedly connected to the handle strap; It also includes an inner connector; the side surface of the inner connector is provided with a fastening groove, a connecting rod is fixedly connected to the inner wall of the fastening groove, a slot is provided at the end of the connecting rod away from the fastening groove, an outer connector is snapped onto the front end of the connecting rod, a locking block is slidably connected to the inner surface of the outer connector, a rack is fixedly connected to the side surface of the locking block, a gear is meshed with the tooth surface of the rack, a rotating shaft is fixedly connected to the inner surface of the gear, a knob is fixedly connected to the end of the rotating shaft away from the gear, a spring is provided between the two racks, and through holes are provided on the bag body, the force-bearing component, and the outer connector.

2. A kraft paper carrier bag as claimed in claim 1, characterised in that: The bag body includes an inner waterproof layer, a kraft paper layer, and an outer waterproof layer. The inner and outer waterproof layers are respectively bonded and fixed to both sides of the kraft paper layer with composite adhesive.

3. A kraft paper carrier bag according to claim 2, characterised in that: Both the inner and outer waterproof layers are made of water-based polyurethane coating.

4. A kraft paper carrier bag as claimed in claim 1, characterised in that: The bag has viewing windows on both sides, and the viewing windows are made of PET film.

5. A kraft paper carrier bag as claimed in claim 1, characterised in that: The outer surface of the force-bearing component engages with the fastening groove, and the outer surface of the carrying strap engages with the fastening groove.

6. A kraft paper carrier bag as claimed in claim 1, characterised in that: The outer surface of the connecting rod is adapted to the through hole, and the outer surface of the connecting rod extends to the outer side wall of the outer connector.

7. A kraft paper carrier bag as claimed in claim 1, characterised in that: The outer surface of the card block engages with the card slot, and the outer surface of the connecting rod slides with the card block.

8. A kraft paper carrier bag as claimed in claim 1, characterised in that: The outer surface of the rotating shaft is rotatably connected to the outer connector, and the outer surface of the rack is slidably connected to the outer connector.

Citation Information

Patent Citations

  • Kraft paper shopping handbag

    CN216453752U