High-capacity screw upright bag
By adding an upper bag piece and a screw mouth structure to the stand-up bag, the problem of insufficient capacity of the stand-up bag is solved, and the effects of large capacity and convenient use are achieved.
Patent Information
- Application Number
- CN202423081005.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The existing stand-up bags have a small internal capacity and cannot meet the needs of some customers.
A large-capacity screw-top stand-up bag is designed. An upper bag piece and a screw top are added to the bag body, and fluid is injected through the screw top to expand the front and rear bag pieces. The seams between the lower bag piece, the front bag piece, and the rear bag piece are olive-shaped, which increases the capacity. The crease structure facilitates storage and use.
It effectively increases the internal capacity of the stand-up bag, reduces floor space, facilitates storage and use, and prevents the screw mouth from getting stuck.
Smart Images
Figure CN223421321U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of packaging, in particular to a large-capacity screw-mouth stand-up bag. Background Art
[0002] Stand-up pouches, also known as upright bags or standing bags, are a widely used packaging format, primarily in the food, chemical, and pharmaceutical industries. They support the bag body with internal fluid, allowing it to stand upright on a flat surface without the need for external support. They offer advantages in portability, ease of use, freshness preservation, and sealing. The bag material can be customized to suit the product being packaged, offering strong adaptability. Existing stand-up pouches typically seal by directly bonding the front and back pouch panels. While this does not affect practical use, the internal capacity is relatively small and may not meet the needs of some customers. Utility Model Content
[0003] In order to overcome the above-mentioned shortcomings of the existing problems, the utility model provides a large-capacity screw-top stand-up bag.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a large-capacity screw-mouth upright bag, including a bag body, the bag body including a front bag piece, a rear bag piece, an upper bag piece and a lower bag piece, the front bag piece, the rear bag piece, the upper bag piece and the lower bag piece are sealed by adhesive or heat sealing, the upper bag piece is fixedly connected with a screw mouth in the middle, and an end cover is provided outside the screw mouth. When stored normally, the upper bag piece fits the front bag piece. When in use, fluid is injected into the bag body through the screw mouth. As the volume of the injected fluid increases, the front bag piece and the rear bag piece are stretched to both sides, and the seam between the lower bag piece and the front bag piece and the rear bag piece is olive-shaped. As the front bag piece and the rear bag piece are stretched, the upper bag piece gradually becomes horizontal. After filling is completed, the end cover is covered to complete the packaging work.
[0005] Preferably, the top of the front bag piece and the back bag piece and the bottom side of the upper bag piece are sealed with R1. When the front bag piece and the back bag piece are stretched outward, R1 will be driven to flip upward, so that the upper bag piece can better maintain a horizontal position during use.
[0006] Preferably, notches are provided on both sides of R1 to prevent R1 from getting stuck when R1 is flipped upward, causing the screw mouth to be unable to stand up normally.
[0007] Preferably, the upper sections of the front bag sheet and the rear bag sheet are both provided with a first fold. When no fluid is injected into the bag body 1, the first fold facilitates the sideways stacking of the bag sheet, which is convenient for use.
[0008] Preferably, a second fold is provided in the middle of the lower bag sheet, and the second fold makes it convenient to fold up the lower bag sheet.
[0009] The beneficial effect of the present invention is that, compared with a traditional stand-up bag in which a front bag piece and a back bag piece are bonded together, the internal capacity of the stand-up bag is effectively increased by the upper bag piece added on the top. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0011] Figure 1 This is the main view of the utility model when folded;
[0012] Figure 2 This is the main view of the utility model after the fluid is injected;
[0013] Figure 3 This is a top view of the utility model after fluid is injected;
[0014] Figure 4 yes Figure 1 Cross-sectional view in the AA direction;
[0015] Figure 5 yes Figure 2 Cross-sectional view in the middle BB direction;
[0016] Figure 6 yes Figure 3 Cross-sectional view in CC direction;
[0017] In the figure, 1, bag body; 2, front bag piece; 3, back bag piece; 4, upper bag piece; 5, lower bag piece; 6, screw mouth; 7, end cover; 8, notch; 9, first fold; 10, second fold. DETAILED DESCRIPTION
[0018] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.
[0019] Any feature disclosed in this specification (including any appended claims, abstract, and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.
[0020] like Figures 1-6The large-capacity screw-mouth upright bag shown in the figure includes a bag body 1, which includes a front bag piece 2, a rear bag piece 3, an upper bag piece 4 and a lower bag piece 5. The front bag piece 2, the rear bag piece 3, the upper bag piece 4 and the lower bag piece 5 are sealed by adhesive or heat sealing. A screw mouth 6 is fixedly connected in the middle of the upper bag piece 4, and an end cover 7 is provided outside the screw mouth 6. During normal storage, the upper bag piece 4 is fitted with the front bag piece 2. During use, fluid is injected into the bag body 1 through the screw mouth 6. As the volume of the injected fluid increases, the front bag piece 2 and the rear bag piece 3 are stretched to both sides, and the joint between the lower bag piece 5 and the front bag piece 2 and the rear bag piece 3 is olive-shaped. As the front bag piece 2 and the rear bag piece 3 are stretched, the upper bag piece 4 gradually becomes horizontal. After filling, the end cover 7 is covered to complete the packaging work.
[0021] The top of the front bag piece 2 and the back bag piece 3 and the bottom side of the upper bag piece 4 are sealed with R1. When the front bag piece 2 and the back bag piece 3 are stretched outward, R1 will be driven to flip upward, so that the upper bag piece 4 can better maintain a horizontal position when in use.
[0022] Notches 8 are provided on both sides of R1 to prevent R1 from getting stuck when R1 is flipped upward, which may cause the screw mouth 6 to be unable to stand up normally.
[0023] The upper sections of the front bag sheet 2 and the rear bag sheet 3 are both provided with a first fold 9. When no fluid is injected into the bag body 1, the first fold 9 facilitates the side stacking of the upper bag sheet 4, which is convenient for use.
[0024] A second fold 10 is provided in the middle of the lower bag sheet 5 , and the lower bag sheet 5 can be folded conveniently through the second fold. Specific embodiments
[0025] When no fluid is injected, the upper bag sheet 4 is stacked on the side of the front bag sheet 2 or the rear bag sheet 3 through the first fold 9 on the upper section of the front bag sheet 2 and the rear bag sheet 3, reducing the footprint of the upright bag and facilitating storage. When in use, unscrew the end cover 7 and inject fluid into the bag body 1 through the screw mouth 6. The lower bag sheet 5 is pressed downward and unfolded by the pressure of the fluid. The joint between the lower bag sheet 5 and the front bag sheet 2 and the rear bag sheet 3 is olive-shaped, which is convenient for standing on a plane. As the volume of the fluid increases, the front bag sheet 2 and the rear bag sheet 3 are stretched to both sides, driving the upper bag sheet 4 to gradually turn to the horizontal direction, and the screw mouth 6 is in a vertical state. After filling is completed, the end cover 7 is covered to complete the packaging work.
[0026] This design is ingenious. Compared with the traditional stand-up bag with the front bag piece and the back bag piece bonded together, the upper bag piece added on the top effectively increases the internal capacity of the stand-up bag. In addition, the first fold and the second fold reduce the footprint of the stand-up bag, making it easier to store. When R1 is flipped upward, the notch prevents R1 from getting stuck, which may cause the screw mouth to be unable to stand up normally.
[0027] The present invention is not limited to the aforementioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.
Claims
1. A large-capacity screw-top stand-up bag, characterized by: The bag body (1) comprises a front bag sheet (2), a rear bag sheet (3), an upper bag sheet (4) and a lower bag sheet (5), wherein the front bag sheet (2), the rear bag sheet (3), the upper bag sheet (4) and the lower bag sheet (5) are sealed by adhesive or heat sealing, and the sealing edge between the top of the front bag sheet (2) and the rear bag sheet (3) and the bottom side of the upper bag sheet (4) is R1, and a screw hole (6) is fixedly connected in the middle of the upper bag sheet (4), and an end cover (7) is provided outside the screw hole (6).
2. The large-capacity screw-top stand-up bag according to claim 1, characterized in that: Notches (8) are provided on both sides of R1.
3. The large-capacity screw-top stand-up bag according to claim 1, characterized in that: The upper sections of the front bag piece (2) and the rear bag piece (3) are both provided with a first fold (9).
4. The large-capacity screw-top stand-up bag according to claim 1, characterized in that: A second fold (10) is provided in the middle of the lower bag sheet (5).