Improved milk storage bag
The improved design of the milk storage bag solves the problems of cumbersome operation and leakage of existing milk storage bags, and realizes the functions of convenient milk suction and quick removal of the collection bag, thus improving the practicality and convenience of the milk storage bag.
Patent Information
- Application Number
- CN202520468814.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing breast milk storage bags are cumbersome to use and can easily lead to milk leakage. Furthermore, disposable breast milk storage bags are not easy to store when combined with a breast pump, reducing their practicality.
An improved milk storage bag was designed, which combines a bag body and a collection bag. It uses a threaded connector to adapt to a breast pump, enabling convenient milk expression. It also prevents bacterial growth through a double sealing function. At the same time, a guide groove and ribs are set between the bag body and the collection bag, which, together with the separation mechanism, allows for quick cutting of the collection bag, improving convenience.
It enables convenient collection and sealed storage of breast milk, avoiding leakage and bacterial growth, and improving the ease of use and storage of breast milk storage bags.
Smart Images

Figure CN223792083U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an improved milk storage bag, belonging to the technical field of milk storage bags. Background Technology
[0002] Breast milk storage bags, also known as breast milk preservation bags or breast milk pouches, are a type of plastic food packaging product primarily used for storing breast milk. Mothers can express breast milk when they have a sufficient supply and store it in these bags for use when milk supply is insufficient or when they are unable to breastfeed their babies regularly due to work or other reasons. Breast milk storage bags are essential for mothers who pump or cannot be with their babies frequently. This is because if there is an excess of breast milk that the baby cannot consume immediately, or if the mother does not have time to breastfeed, it is necessary to express the breast milk and store it in the refrigerator. The main material of breast milk storage bags is polyethylene, including low-density polyethylene or linear low-density polyethylene, and there is little difference in safety between these materials. Some storage bags also incorporate PET to improve their barrier properties.
[0003] Currently available breast milk storage bags require users to first collect breast milk in a bottle provided with a breast pump, and then transfer it to the storage bag. This process is cumbersome and may lead to contamination. Directly pumping breast milk into the storage bag is inconvenient and prone to leakage, resulting in waste. Combining disposable breast milk storage bags with a breast pump can provide convenience, but the presence of the breast pump makes storage difficult, reducing the practicality of the storage bags. Utility Model Content
[0004] This invention provides an improved milk storage bag to solve the technical problem of inconvenient milk storage.
[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:
[0006] This utility model provides an improved milk storage bag, comprising:
[0007] The bag body is connected to the collection bag. The top of the bag body is provided with two sealing strips, and there is an arc-shaped guide groove between the bag body and the collection bag. The top of the collection bag is fixedly connected to a rigid interface. The top of the rigid interface is provided with a threaded joint. The connection between the rigid interface and the threaded joint is provided with a flange, and the flange is connected to the separation mechanism through a connecting rope. The surface of the threaded joint is threaded with a screw sleeve.
[0008] Both the bag body and the edge of the collection bag are sealed, and the seal located at the edge of the collection bag is fixedly connected to the handle.
[0009] The outer diameter of the flange is the same as the outer diameter of the sleeve. A first sealing ring is fixedly connected to the top surface of the flange, and the first sealing ring is fitted and connected to the bottom edge of the sleeve.
[0010] The sleeve is internally fixedly connected to a second sealing ring, and the second sealing ring is in contact with the top of the threaded joint.
[0011] The top of the bag is fixedly connected with two ribs, both of which are arc-shaped. The two ribs and the guide groove are located on both sides of the bag.
[0012] The guide groove is positioned between the two convex ribs, and both ends of the convex ribs at the bottom are curved structures.
[0013] The bag body has notches on both sides of its edge, the notches are located between two ribs, and the notches are connected to the guide grooves.
[0014] The separation mechanism consists of a connecting block, a slider, and an adhesive block. The connecting block is fixedly connected to the adhesive block via the slider. The connecting block and the adhesive block are respectively attached to both sides of the bag body. Two limiting strips are fixedly connected to the inner wall of the connecting block, and the two limiting strips are located on both sides of one of the protruding ribs.
[0015] The connecting block is fixedly connected to the connecting rope. The slider inside the connecting block is located inside the notch, and the width of the slider is less than the distance between the two protruding ribs.
[0016] One side of the slider is fixedly connected to the cutter, and the cutter is distributed correspondingly with the guide groove.
[0017] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.
[0018] The positive and progressive effects of this utility model are as follows:
[0019] The aforementioned improved milk storage bag uses a combination of a bag body and a collection bag to collect milk. The threaded connector on the collection bag is compatible with a breast pump for convenient milk expression. After milk is drawn in, it is directly collected by the bag body, and a double-sealing function ensures that bacteria do not grow inside the storage bag. After use, the top of the storage bag can be removed for easy storage, improving the convenience of disposable milk storage bags. A guide groove and ribs between the bag body and the collection bag enable quick cutting, and a separation mechanism allows for rapid operation, further enhancing usability. The separation mechanism and collection bag can be removed simultaneously for easy storage of milk inside the bag, further improving usability. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.
[0021] Figure 2 This is a three-dimensional structural diagram of the protruding rib of this utility model.
[0022] Figure 3 This is a schematic diagram of the half-section structure of this utility model.
[0023] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.
[0024] Figure 5 This is a three-dimensional structural diagram of the bag body of this utility model.
[0025] Figure 6 This utility model Figure 5 A magnified schematic diagram of the structure at point B.
[0026] Figure 7 This is a schematic diagram of the external front view of the present invention.
[0027] Explanation of reference numerals in the attached figures
[0028] 1. Bag body; 2. Sealing edge; 3. Sealing strip; 4. Collection bag; 5. Rigid interface; 6. Handle; 7. Flange; 8. First sealing ring; 9. Threaded joint; 10. Slip sleeve; 11. Second sealing ring; 12. Notch; 13. Rib; 14. Guide groove; 15. Connecting rope; 16. Connecting block; 17. Limiting strip; 18. Sliding block; 19. Adhesive block; 20. Cutter. Detailed Implementation
[0029] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.
[0030] like Figure 1-7 As shown, the improved milk storage bag includes:
[0031] The bag body 1 is connected to the collection bag 4. The top of the bag body 1 is provided with two sealing strips 3, and the guide groove 14 with an arc structure is provided between the bag body 1 and the collection bag 4. The top of the collection bag 4 is fixedly connected to a rigid interface 5. The top of the rigid interface 5 is provided with a threaded connector 9. The connection between the rigid interface 5 and the threaded connector 9 is provided with a flange 7, and the flange 7 is connected to the separation mechanism through a connecting rope 15. The surface of the threaded connector 9 is threaded with a screw sleeve 10.
[0032] Both the bag body 1 and the collection bag 4 are provided with sealing edges 2, and the sealing edges 2 located on the edge of the collection bag 4 are fixedly connected to the handle 6; the outer diameter of the flange 7 is the same as the outer diameter of the sleeve 10, and a first sealing ring 8 is fixedly connected to the top surface of the flange 7, and the first sealing ring 8 is fitted and connected to the bottom edge of the sleeve 10; a second sealing ring 11 is fixedly connected inside the sleeve 10, and the second sealing ring 11 is in contact with the top end of the threaded joint 9.
[0033] In this technical solution, the sealing edge 2 of the bag body 1 and the collection bag 4 achieves internal sealing, and the handle 6 is provided for easy gripping during milk expression, improving ease of use. When the screw sleeve 10 is tightened, the edge of the screw sleeve 10 contacts the first sealing ring 8, and the top of the threaded connector 9 contacts the second sealing ring 11, ensuring the sealing performance of the bag body 1 and the collection bag 4 and preventing bacteria from entering. When in use, the screw sleeve 10 is unscrewed, and the connection with the breast pump is achieved through the threaded connector 9, so that the milk is collected inside the bag body 1.
[0034] The top of the bag body 1 is fixedly connected with two ribs 13, both of which are arc-shaped. The two ribs 13 and the guide groove 14 are located on both sides of the bag body 1 respectively. The guide groove 14 is correspondingly arranged between the two ribs 13. The two ends of the rib 13 at the bottom are curved. Notches 12 are opened on both sides of the bag body 1. The notches 12 are located between the two ribs 13 and are connected to the guide groove 14.
[0035] In this technical solution, after the milk is stored inside the bag body 1, the sealing strip 3 is pressed tightly. The sealing is achieved by the interlocking of the sealing strips 3. At the same time, setting two sealing strips 3 can improve the sealing performance and avoid leakage problems when the milk storage bag is used later.
[0036] The separation mechanism consists of a connecting block 16, a slider 18, and an adhesive block 19. The connecting block 16 is fixedly connected to the adhesive block 19 via the slider 18. The connecting block 16 and the adhesive block 19 are respectively attached to both sides of the bag body 1. Two limiting strips 17 are fixedly connected to the inner wall of the connecting block 16, and the two limiting strips 17 are respectively located on both sides of one of the protruding ribs 13. The connecting block 16 is fixedly connected to the connecting rope 15. The slider 18 on the inner side of the connecting block 16 is located inside the notch 12, and the width of the slider 18 is less than the distance between the two protruding ribs 13. One side of the slider 18 is fixedly connected to the cutter 20, and the cutter 20 is correspondingly distributed with the guide groove 14.
[0037] In this technical solution, after the milk is stored, the connecting block 16 is moved to one of the notches 12 by the connecting rope 15, and the fitting block 19 is attached to the other side of the bag body 1. At this time, the slider 18 is located inside the notch 12, and the cutter 20 corresponds to the guide groove 14. The connecting block 16 is moved from one side of the bag body 1, and the connecting block 16 drives the limiting strip 17 to move at one of the protruding ribs 13. With the guidance of the guide groove 14, the cutter 20 moves along the guide groove 14, thereby cutting off the collection bag 4 and separating the collection bag 4 from the bag body 1. The connecting rope 15 connects the connecting block 16, which can make the collection bag 4 and the separation mechanism discarded together, avoiding the safety hazards to infants and young children caused by the small separation mechanism and the cutter 20. After the collection bag 4 is separated, since the edge of the bag body 1 at the notch 12 is arc-shaped, it can ensure the use of the bag body 1 after separation, which can facilitate the storage of the bag body 1 and will not occupy refrigerator space, thus improving the convenience of using the milk storage bag.
[0038] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.
Claims
1. Improved milk storage bag, characterized in that Include: The bag body (1) is connected with the collecting bag (4), the bag body (1) top is equipped with two sealing strips (3), and the bag body (1) and the collecting bag (4) are equipped with arc-shaped guide groove (14), the collecting bag (4) top fixedly connected with hard interface (5), hard interface (5) top is equipped with threaded joint (9), hard interface (5) and threaded joint (9) connection is equipped with flange (7), and the flange (7) is connected with the separating mechanism through the connecting rope (15), the threaded joint (9) surface threaded sleeve is connected with the spin sleeve (10).
2. The improved bag according to claim 1, wherein: The bag body (1) and collecting bag (4) edge are equipped with edge sealing (2), and the edge sealing (2) located at the edge of the collecting bag (4) is fixedly connected with the handle (6).
3. The improved bag according to claim 1, wherein: The flange (7) outer diameter is same with the spin sleeve (10) outer diameter, the flange (7) top surface is fixedly connected with the first sealing ring (8), and the first sealing ring (8) is connected with the spin sleeve (10) bottom edge.
4. The improved bag according to claim 3, wherein: The spin sleeve (10) is fixedly connected with the second sealing ring (11) inside, and the second sealing ring (11) is in contact with the top end of the threaded joint (9).
5. The improved bag as claimed in claim 1, wherein: The bag body (1) top is fixedly connected with the convex rib (13), the number of the convex rib (13) is two and both are arc structure, two convex ribs (13) and guide groove (14) are located on both sides of the bag body (1).
6. The improved bag according to claim 5, wherein: The guide groove (14) is arranged between the two convex ribs (13), and the convex rib (13) at the bottom is arc structure.
7. The improved bag as claimed in claim 1, wherein: The bag body (1) both sides edge is equipped with notch (12), the notch (12) is located between the two convex ribs (13), and the notch (12) is communicated with the guide groove (14).
8. The improved bag as claimed in claim 1, wherein: The separating mechanism is composed of connecting block (16), sliding block (18) and fitting block (19), the connecting block (16) is fixedly connected with the fitting block (19) through the sliding block (18), the connecting block (16) and the fitting block (19) are respectively connected with the both sides of the bag body (1), the connecting block (16) inner wall is fixedly connected with two limit strips (17), two limit strips (17) are respectively located on both sides of one of the convex ribs (13).
9. The improved bag according to claim 8, wherein: The connecting block (16) is fixedly connected with the connecting rope (15), the sliding block (18) inside the connecting block (16) is located in the notch (12), and the width of the sliding block (18) is less than the distance between the two convex ribs (13).
10. The improved bag as claimed in claim 9, wherein: The sliding block (18) one side is fixedly connected with the cutter (20), and the cutter (20) is distributed correspondingly with the guide groove (14).