Bag bottle
By designing a combination of threaded connection, inner bladder structure, and one-way valve for the bladder bottle, the problems of liquid residue and sealing in liquid containers are solved, achieving complete liquid extrusion and good sealing, thus improving ease of use and hygiene.
Patent Information
- Application Number
- CN202520132718.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Traditional liquid containers are difficult to completely squeeze out during use, leaving excessive residue, and are difficult to keep sealed after opening, affecting the quality and hygiene of the contents.
A bag bottle was designed, which adopts a threaded anti-backflow flip cap and an internal bag structure, combined with a one-way valve and an elastomer valve plate. The liquid outflow and sealing are controlled by positive and negative pressure. The bag is divided into a barrier layer, an adhesive layer and a PE layer to ensure the sealing performance.
It achieves complete extrusion of liquid, reduces residue, ensures convenient and hygienic use, while maintaining good sealing and extending shelf life.
Smart Images
Figure CN223836176U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a bag-shaped bottle. Background Technology
[0002] Traditional liquid containers often present problems such as difficulty in completely squeezing out liquid, excessive residue, and inconvenience in use. In addition, some containers are difficult to keep sealed after opening, affecting the quality and hygiene of the contents. Utility Model Content
[0003] This invention provides a bag-shaped bottle that ensures smooth liquid outflow from the bag, maintains a tight seal, and guarantees the quality and hygiene of the liquid inside the bottle.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A bag-shaped bottle, characterized in that: a bottle mouth is provided at the top of the bottle body, the bottle mouth is fixedly connected to an anti-backflow flip cap by threads, a bag is provided inside the bottle body, there is a gap between the inner wall of the bottle body and the bag, and a one-way valve is provided at the bottom of the bottle body, the bottle body forms positive and negative pressure by compression or rebound, and controls the one-way valve to open or close.
[0006] The anti-backflow flip cap includes an upper cover, a cap body, and an elastic valve plate. The cap body is foldably connected to the upper cover. The elastic valve plate is slidably disposed inside the cap body. The elastic valve plate is pushed upward or lowered downward by the positive and negative pressure formed inside the bottle body, thereby controlling the outflow of liquid from the bottle body.
[0007] The bag bottle, wherein the bag is divided into three layers from the outside to the inside, namely a barrier layer, an adhesive layer and a PE layer, wherein the barrier layer is bonded to the PE layer as a whole through the adhesive layer.
[0008] The bag-shaped bottle, wherein: the top of the cap is provided with a liquid outlet for the liquid inside the bottle to flow out.
[0009] The beneficial effects of this utility model are: 1-Complete extrusion: Through the synergistic effect of the bottle body and inner capsule, it can be ensured that the liquid is completely extruded, reducing residue.
[0010] 2. Convenient to use: The design of the rotating flip cap and liquid outlet makes it more convenient, while the elastomeric valve plate ensures that the liquid flowing out is hygienic and free from contamination.
[0011] 3-Pressure balance: The one-way valve at the bottom enables balanced regulation of the pressure inside the bottle, preventing pressure changes from affecting the performance.
[0012] 4. Excellent sealing: The tight fit between the cap and the bottle body ensures excellent sealing, effectively extending the shelf life of the liquid inside the bottle. Attached Figure Description
[0013] Figure 1 This is a cross-sectional view of the bag-shaped bottle.
[0014] Figure 2 This is a top view of the bag-shaped bottle.
[0015] Figure 3 This is a top view of the structure of the bag-shaped bottle.
[0016] Figure 4 This is an exploded structural diagram of the sac.
[0017] Figure 5 This is a structural diagram of the sac-like bottle.
[0018] Figure 6 This is a cross-sectional view of the bag-shaped bottle.
[0019] Figure 7 This is an enlarged view of part A.
[0020] Figure 8 Diagram of the flip-top structure to prevent backflow.
[0021] Figure 9 Cross-sectional view of the flip cover to prevent backflow.
[0022] Figure 10 Cross-sectional view of the flip-top in the open position to prevent backflow.
[0023] Figure 11 Top view of the flip-top with the cover open to prevent backflow.
[0024] Explanation of reference numerals in the attached diagram: 1-Anti-backflow flip cap; 2-Bottle body; 3-Bag; 4-Dispenser; 5-One-way valve; 6-Barrier layer; 7-Adhesive layer; 8-PE layer; 9-Top cap; 10-Cap body; 11-Elastomer valve plate; 12-Bottle mouth. Detailed Implementation
[0025] like Figures 1 to 11 The bottle shown is characterized in that: a bottle mouth 12 is provided at the top of the bottle body 2, the bottle mouth 12 is fixedly connected to the anti-backflow flip cap 1 by threads, a bag 3 is provided inside the bottle body 2, the bag 3 is divided into three layers from the outside to the inside, namely a barrier layer 6, an adhesive layer 7 and a PE layer 8, the barrier layer 6 is bonded to the PE layer 8 by the adhesive layer 7, there is a gap between the inner wall of the bottle body 2 and the bag 3, and a one-way valve 5 is provided at the bottom of the bottle body 2, the bottle body 2 forms positive and negative pressure by compression or rebound, and controls the one-way valve 5 to open or close.
[0026] The anti-backflow flip cap 1 includes an upper cover 9, a cap body 10, and an elastic valve plate 11. The cap body 10 is foldably connected to the upper cover 9. The elastic valve plate 11 is slidably disposed inside the cap body 10. The elastic valve plate 11 is pushed upward or lowered downward by the positive and negative pressure formed inside the bottle body 2, and controls the outflow of liquid inside the bottle body 2. The top of the cap body 10 is provided with a liquid outlet 4 for the outflow of liquid inside the bottle body 2.
[0027] In this embodiment, the top cover 9 is opened and the bottle body 2 is squeezed by hand. Positive pressure is formed inside the bottle body 2, and the liquid in the bag 3 is squeezed upward and pushes open the elastic valve plate 11. The liquid flows out from the outlet 4. Because positive pressure is formed inside the bottle body 2, the one-way valve 5 is pressed down. At this time, the one-way valve 5 is in the closed state to prevent external air from flowing into the bottle body 2.
[0028] After the bottle body 2 is released, the rebound of the bottle body 2 and the negative pressure formed inside the bottle body 2, along with the downward pulling force on the elastic valve plate 11, cause the elastic valve plate 11 to fall back to its initial state and block the outflow of liquid. The negative pressure formed inside the bottle body 2 pulls the one-way valve 5 upward. At this time, the one-way valve 5 is in the open state, allowing external air to flow into the bottle body 2, that is, into the gap between the inner wall of the bottle body 2 and the bag 3.
[0029] The above embodiments are merely illustrative examples of this utility model and are not intended to limit the scope of protection of this utility model. Those skilled in the art can make simple changes or substitutions based on the above embodiments without departing from the technical concept of this utility model, but these changes will still fall within the scope of protection of this utility model.
Claims
1. A bag-shaped bottle, characterized in that: A bottle mouth (12) is provided at the top of the bottle body (2), and the bottle mouth (12) is fixedly connected to the anti-backflow flip cap (1) by threads. A bag (3) is provided inside the bottle body (2), and there is a gap between the inner wall of the bottle body (2) and the bag (3). A one-way valve (5) is provided at the bottom of the bottle body (2). The bottle body (2) forms positive and negative pressure by squeezing or rebounding, and controls the one-way valve (5) to open or close. The anti-backflow flip cap (1) includes an upper cover (9), a cover body (10), and an elastic valve plate (11). The cover body (10) is foldably connected to the upper cover (9). The elastic valve plate (11) is slidably disposed inside the cover body (10). The elastic valve plate (11) is pushed up or lowered by the positive and negative pressure formed inside the bottle body (2) to control the outflow of liquid inside the bottle body (2).
2. The bag-shaped bottle as described in claim 1, characterized in that: The bag (3) is divided into three layers from the outside to the inside: a barrier layer (6), an adhesive layer (7), and a PE layer (8). The barrier layer (6) is bonded to the PE layer (8) through the adhesive layer (7).
3. The bag-shaped bottle as described in claim 1, characterized in that: The top of the cap (10) is provided with a liquid outlet (4) for the liquid inside the bottle (2) to flow out.