A foldable, flat laundry detergent bag

By combining a buffer strip, a slot buckle, and a magnet, along with a double-sealing structure of threaded posts and nuts, the problem of bulging and sealing of laundry detergent packaging bags during folding and storage is solved, achieving stable folding and sealing, ensuring complete emptying of the excess liquid, and improving the user experience.

CN224428472UActive Publication Date: 2026-06-30LIAONING HENGYUAN NEW MATERIAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIAONING HENGYUAN NEW MATERIAL TECH CO LTD
Filing Date
2025-09-03
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing laundry detergent packaging bags are prone to bulging when folded and stored, have poor sealing performance, and are difficult to completely empty, affecting the user experience.

Method used

The system employs a buffer belt to guide folding, a slot and buckle to engage, and a magnetic block to attract and secure the device. The threaded post and nut work together to form a double seal, and the guide tube and guide groove work together to evenly squeeze out air. The sealing plate is adjusted to a certain position to collect residual liquid.

Benefits of technology

It achieves a stable multi-segment folding design, preventing bag deformation, ensuring airtightness, facilitating complete emptying of excess material, and improving practicality and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of laundry detergent packaging technology, and discloses a foldable and flat laundry detergent packaging bag, including a bag body. The top two sides of the bag body are fixedly connected to slots, and the middle and bottom sides of the bag body are fixedly connected to buckles. A second magnet is disposed inside each slot, and a first magnet is fixedly connected to the middle of each buckle. A cushioning strip is disposed on the outer wall of the bag body, a first sealing plate is disposed on the front outer wall of the bag body, and a second sealing plate is disposed on the outer wall of the first sealing plate. Locking components are disposed on the outer walls of both the first and second sealing plates. In this utility model, the packaging bag uses a cushioning strip to guide folding and prevent bulging, and the slots, buckles, and magnets provide a stable fixation. It can be folded in multiple sections to save space. Simultaneously, the threaded post and nut, together with the sealing cap, provide a double seal to prevent leakage. The sealing plate can compress the space to expel air, and when the remaining amount is small, it can collect residual laundry detergent towards the outlet, improving practicality and reliability.
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Description

Technical Field

[0001] This utility model relates to the field of laundry detergent packaging technology, and in particular to a foldable and storable flat laundry detergent packaging bag. Background Technology

[0002] In daily life, laundry detergent is a commonly used cleaning product, widely used in the washing of clothes and fabrics. To meet different usage scenarios and consumer needs, laundry detergent packaging has become diversified. Among them, flexible packaging bags have gained a certain market share due to their lightweight material, low cost, and convenient transportation and storage, becoming one of the choices for many consumers.

[0003] Currently, common soft packaging bags for laundry detergent on the market present several inconveniences during use. Regarding folding and storage, existing packaging bags lack effective guidance and fixing structures. When the remaining detergent is low, users often fold the bag haphazardly to save storage space. However, this irregular folding method easily leads to bulging of the bag, and it is difficult to maintain stability after folding, easily unfolding. This not only fails to achieve the desired space-saving effect but may also damage the bag due to improper folding. In terms of sealing and drainage, the sealing structure of existing packaging bags is relatively simple, resulting in poor sealing performance and easy leakage of laundry detergent. Furthermore, when expelling air from the bag before folding, the lack of a dedicated compression and guiding structure means that uneven force is applied when users manually squeeze the bag, often making it difficult to expel air smoothly and potentially causing irregular deformation of the bag, making subsequent folding difficult. In addition, when the remaining detergent in the packaging bag is low, the residual detergent easily disperses at the bottom or corners of the bag. Due to the lack of an effective collection structure, simply pouring it out is insufficient to completely empty the remaining detergent, resulting in resource waste and affecting the user experience. In response to this technical problem, this application proposes a foldable and retractable flat laundry detergent packaging bag. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a foldable, flat laundry detergent packaging bag. This bag uses a cushioning band to guide folding and prevent bulging. The slots and buckles, combined with magnetic blocks, ensure a secure hold. It supports multi-section folding, allowing for space-saving adjustments as the remaining liquid decreases. A threaded post and nut, along with a top sealing cap, form a double seal to prevent leakage. Before folding, the sealing plate is fixed, and the compressible space is moved upwards to evenly distribute pressure, expel air, and prevent deformation. When the remaining liquid is low, the sealing plate is moved below the liquid surface, allowing residual detergent to collect at the outlet for easy pouring, thus improving practicality and reliability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a foldable and storable flat laundry detergent packaging bag, comprising a bag body, with slots fixedly connected to both sides of the top of the bag body, buckles fixedly connected to both sides of the middle and bottom of the bag body, a second magnet block provided inside the slots, a first magnet block fixedly connected to the middle of the buckles, a buffer strip provided on the outer wall of the bag body, a first sealing plate provided on the front outer wall of the bag body, a second sealing plate provided on the outer wall of the first sealing plate, and locking components provided on the outer walls of the first and second sealing plates.

[0006] Furthermore, the locking assembly includes a semi-circular threaded column fixedly connected to the outer left side of both sealing plate one and sealing plate two, with a nut threadedly connected to the outer wall of the semi-circular threaded column, and a rotating shaft provided inside the right end of both sealing plate one and sealing plate two.

[0007] Furthermore, a guide tube is provided on the outer wall of the front side of the bag body, and guide grooves are provided on the outer walls of both the first sealing plate and the second sealing plate.

[0008] Furthermore, both ends of the sealing plate one and the sealing plate two are provided with strip grooves.

[0009] Furthermore, the outer wall of the guide tube is slidably connected to the inside of the guide groove.

[0010] Furthermore, a liquid outlet is fixedly connected to the top left side of the bag body, and a sealing cap is threadedly connected to the outer wall of the liquid outlet.

[0011] Furthermore, a handle is provided at the top of the bag, and an observation port is provided on the right side of the bag.

[0012] Beneficial effects:

[0013] 1. The packaging bag uses a cushioning strip to guide the folding, avoiding bulging caused by random folding; with the interlocking of the slots and buckles, combined with the attraction of the magnetic blocks, it achieves a stable folding and fixation, and supports multi-section folding, which can be gradually adjusted as the remaining space decreases, saving storage space.

[0014] 2. In this utility model, the packaging bag forms a double seal through the combination of threaded post and nut with a top sealing cap, which can effectively prevent laundry detergent from leaking out. Before folding, the sealing plate is fixed at the liquid surface and moved upward, which can evenly compress the space inside the bag. With the help of the guide, the squeezing force is balanced, air is smoothly discharged, and the bag body is prevented from deforming, which provides convenience for subsequent folding. When the remaining amount is small, the sealing plate is moved below the liquid surface, and the horizontal pushing squeezing action gathers the remaining laundry detergent towards the outlet, which makes it easy to pour out the remaining amount in the packaging bag, improving the practicality and reliability of the product. Attached Figure Description

[0015] Figure 1This is a perspective view of a foldable and storable flat laundry detergent packaging bag proposed in this utility model;

[0016] Figure 2 This is a schematic diagram showing the position and structure of the buffer strip and guide tube of a foldable and retractable flat laundry detergent packaging bag proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the buckle and slot positions of a foldable, flat laundry detergent packaging bag proposed in this utility model.

[0018] Figure 4 This is a schematic diagram showing the position and structure of the sealing plate one and sealing plate two of a foldable and storable flat laundry detergent packaging bag proposed in this utility model.

[0019] Legend:

[0020] 1. Bag body; 2. Handle; 3. Sealing cap; 4. Card slot; 5. Buckle; 6. Sealing plate one; 7. Sealing plate two; 8. Observation port; 9. Buffer strip; 10. Guide tube; 11. Magnet block one; 12. Semi-circular threaded post; 13. Rotating shaft; 14. Nut; 15. Guide groove; 16. Magnet block two; 17. Strip groove. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0024] Please see Figures 1-3An embodiment of this utility model provides: a foldable and storable flat laundry detergent packaging bag, including a bag body 1, with slots 4 fixedly connected to both sides of the top of the bag body 1, buckles 5 fixedly connected to both sides of the middle and bottom of the bag body 1, a second magnet 16 provided inside the slots 4, a first magnet 11 fixedly connected to the middle of the buckles 5, a buffer strip 9 provided on the outer wall of the bag body 1, a liquid outlet fixedly connected to the top left side of the bag body 1, a sealing cap 3 threadedly connected to the outer wall of the liquid outlet, a handle 2 provided on the top of the bag body 1, and an observation port 8 provided on the right side of the bag body 1.

[0025] Specifically, when the remaining laundry detergent is low or needs to be stored, the user can fold the bag 1 vertically along the folding path defined by the buffer strip 9. Folding with the buffer strip 9 prevents the bag 1 from bulging or thickness deviation due to repeated folding. During folding, the top slot 4 engages with the middle buckle 5. The protruding structure of the buckle 5 and the groove of the slot 4 achieve initial engagement and fixation. At the same time, the built-in magnet 11 and magnet 16 further enhance the engagement strength due to magnetic attraction, forming a stable folding fixation. When further folding is needed as the remaining detergent decreases, the top slot 4 can engage with the bottom buckle 5 after folding, achieving multi-stage folding and maximizing storage space saving. In use, the observation port 8 is a strip-shaped transparent structure that can display the remaining laundry detergent in real time, providing the user with a reference for replenishment. The top outlet is connected to the sealing cap 3 by a threaded connection to ensure sealing after use. The handle 2 is integrated with the top of the bag 1 for easy carrying and hanging.

[0026] Reference Figure 1 , Figure 2 and Figure 4 A sealing plate 6 is provided on the front outer wall of the bag body 1, and a sealing plate 7 is provided on the outer wall of the sealing plate 6. A semi-circular threaded post 12 is fixedly connected to the left outer wall of both the sealing plate 6 and the sealing plate 7. A nut 14 is threadedly connected to the outer wall of the semi-circular threaded post 12. A rotating shaft 13 is provided inside the right end of the sealing plate 6 and the sealing plate 7. A guide tube 10 is provided on the front outer wall of the bag body 1. A guide groove 15 is provided on the outer wall of both the sealing plate 6 and the sealing plate 7. A strip groove 17 is provided inside both ends of the sealing plate 6 and the sealing plate 7. The outer wall of the guide tube 10 is slidably connected to the inside of the guide groove 15.

[0027] Specifically, when a reinforced seal is needed for bag 1, sealing plate 6 and sealing plate 7 are pushed upwards along the guide tube 10 and guide groove 15. Due to the limiting effect of the guide tube 10 on the guide groove 15, the two sealing plates always slide against the outer wall of bag 1. When they move to the top of bag 1, sealing plate 6 and sealing plate 7 merge under the action of the rotating shaft 13. At this time, the semi-circular threaded column 12 on the outer wall of sealing plate 6 and sealing plate 7 forms a complete threaded column. After tightening the nut 14, and cooperating with the top sealing cap 3 to seal the liquid outlet, a double seal is formed to prevent laundry detergent leakage. Before bag 1 needs to be folded, according to the remaining position shown by the observation port 8, sealing plate 6 and sealing plate 7 are fixed at the liquid level of laundry detergent. At this time, as sealing plate 6 and sealing plate 7 move upwards, they gradually compress the internal space of bag 1, forcing the air inside the bag to be discharged from the open liquid outlet. The sliding fit between the guide tube 10 and the guide groove 15 ensures even distribution of the squeezing force, avoiding deformation of the bag body 1 due to excessive local squeezing, and facilitating subsequent folding. When the remaining detergent in the bag body 1 is low, the sealing plate 6 and the sealing plate 7 are moved below the liquid surface. The squeezing action of the sealing plate 6 and the sealing plate 7 on the bag body 1 draws the remaining detergent towards the outlet. Due to the guiding effect of the guide groove 15, the movement remains horizontal, allowing the residual detergent to flow smoothly from the outlet under pressure, solving the problem of difficulty in emptying the remaining detergent from traditional packaging bags. The strip grooves 17 at both ends of the sealing plate 6 and the sealing plate 7 ensure stable up-and-down movement, preventing blockage caused by the latches 5 during movement.

[0028] Working principle: When in use, when storage is needed or the remaining space is reduced, fold the bag body 1 along the path defined by the buffer strip 9 to avoid bulging or thickness deviation caused by random folding; when folding, the top slot 4 engages with the middle or bottom buckle 5, and is initially fixed by the protrusion of the buckle 5 and the groove of the slot 4. The built-in magnet block 11 and magnet block 2 16 further enhance the engagement strength through magnetic force, realizing multi-segment folding to save space. When carrying the product and needing enhanced sealing, push the sealing plate 6 and sealing plate 7 upwards along the guide tube 10 and guide groove 15. After moving to the top, they merge with the help of the pivot 13, and the semi-circular threaded column 12 is combined into a complete threaded column and the nut 14 is screwed on. Together with the sealing cover 3, they form a double seal. Before folding, fix the sealing plate 6 and sealing plate 7 above the liquid surface. When moving upwards, the internal space is compressed, allowing air to be discharged from the liquid outlet. The guide structure ensures uniform extrusion pressure. When the remaining liquid is low, move the sealing plate 6 and sealing plate 7 below the liquid surface and push them horizontally to gather the remaining laundry detergent towards the liquid outlet for easy pouring out. The strip groove 17 prevents the sealing plate from being blocked by the buckle 5 when moving. The observation port 8 can display the remaining laundry detergent in real time. The handle 2 makes it easy to carry and hang.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flat laundry detergent packaging bag that can be folded and stored, comprising a bag body (1), characterized in that: The top two sides of the bag body (1) are fixedly connected with slots (4), and the middle and bottom sides of the bag body (1) are fixedly connected with buckles (5). A second magnet block (16) is provided inside the slot (4), and a first magnet block (11) is fixedly connected to the middle of the buckle (5). A buffer strip (9) is provided on the outer wall of the bag body (1). A first sealing plate (6) is provided on the front outer wall of the bag body (1), and a second sealing plate (7) is provided on the outer wall of the first sealing plate (6). Locking components are provided on the outer walls of the first sealing plate (6) and the second sealing plate (7).

2. The flat laundry detergent packaging bag according to claim 1, wherein: The locking assembly includes a semi-circular threaded column (12) fixedly connected to the outer wall of the left side of both sealing plate one (6) and sealing plate two (7). The outer wall of the semi-circular threaded column (12) is threaded with a nut (14). A rotating shaft (13) is provided inside the right end of both sealing plate one (6) and sealing plate two (7).

3. The flat laundry detergent packaging bag according to claim 1, wherein: The bag body (1) has a guide tube (10) on its front outer wall, and the outer walls of the sealing plate one (6) and the sealing plate two (7) are both provided with guide grooves (15).

4. The flat laundry detergent packaging bag according to claim 1, wherein: Both ends of the sealing plate one (6) and the sealing plate two (7) are provided with strip grooves (17).

5. The flat laundry detergent packaging bag according to claim 3, wherein: The outer wall of the guide tube (10) is slidably connected to the inside of the guide groove (15).

6. The flat laundry detergent package of claim 1, wherein: The top left side of the bag body (1) is fixedly connected to a liquid outlet, and a sealing cap (3) is threadedly connected to the outer wall of the liquid outlet.

7. The flat laundry detergent package of claim 1, wherein: An observation port (8) is provided on the right side of the bag (1).