Compression molding cover for freeze-drying

Abstract

The utility model relates to the technical field of penicillin bottle packaging, and discloses a freeze-drying compression molding cover which comprises a shell, a rubber plug and an opening valve, a plurality of breathing windows distributed circumferentially are formed in the side wall of the middle of the shell, a clamping jaw is arranged on the inner wall of the shell and located between the breathing windows and the first end of the shell, and the opening valve is connected with the rubber plug. The breathing window is used as a volatilization channel of a freeze-drying solvent when the upper edge of the bottle opening of the penicillin bottle body abuts against the clamping jaw; the rubber plug is used for being in sealing contact with a bottle opening of the penicillin bottle body when the clamping jaw crosses the upper edge of the bottle opening of the penicillin bottle body and clamps the lower edge of the bottle opening of the penicillin bottle body; the opening valve is used for sealing the second end of the shell and the puncture face of the sealing cover rubber plug before opening. According to the compression molding cover for freeze-drying, simple manual compression molding capping of a penicillin bottle body is achieved, the capping difficulty is reduced, more convenience is brought to use of the penicillin bottle, a freeze-drying solvent is volatilized through the breathing window in the shell before the shell and the penicillin bottle body are completely buckled, and the storage requirement of freeze-drying products is met.

Description

Technical Field

[0001] This utility model relates to the field of vial packaging technology, and in particular to a compression cap for freeze drying. Background Technology

[0002] Compared to traditional aluminum-plastic composite caps, the vial compression-molded cap is made entirely of plastic components, reducing the use of metal and making it more environmentally friendly and easier to recycle. It also solves the following problems from the user's perspective: 1. The problem of aluminum shavings from capping contaminating the cleanroom environment; 2. The problem of inconsistent capping results from different capping equipment; 3. The problem of unstable capping results from the same capping machine due to deformation, displacement, or loose screws during operation; 4. Manual compression capping can be performed after small batches of products are filled, eliminating the need for large capping equipment and providing pharmaceutical companies with more flexible options.

[0003] However, existing vial caps still have the following problems: 1. The puncture surface of the vial stopper is a non-sterile seal with gaps, and the puncture surface of the stopper must be disinfected before puncturing the stopper; 2. Because the existing caps usually only have three non-continuous locking claws and the material is soft, the locking firmness after capping is unstable. Some products may also be rotatable due to dimensional tolerance matching issues, thus leading to potential sealing risks; 3. Existing caps cannot be matched with the production process of freeze-dried products, thus limiting their use. Utility Model Content

[0004] The purpose of this invention is to provide a compression-molded cap for freeze-drying, thereby solving the problems mentioned in the background art, optimizing the structure of vial caps, and being applicable to freeze-dried products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A freeze-drying compression cap is affixed to the body of a vial. The freeze-drying compression cap includes a shell, a rubber stopper, and an opening valve, wherein:

[0007] The shell is a double-opening cylindrical shape. The inner diameter of the shell is the same as the outer diameter of the mouth of the vial. The first end of the shell is fitted onto the vial. Several circumferentially distributed breathing windows are opened on the middle side wall of the shell. A claw is provided on the inner wall of the shell between the breathing windows and the first end of the shell. The breathing windows are used as evaporation channels for the freeze-drying solvent when they are against the claw at the mouth of the vial.

[0008] The rubber stopper is located inside the housing and between the breathing window and the second end of the housing. The rubber stopper is used to seal the mouth of the vial when the claw passes over the upper edge of the vial mouth and locks the lower edge of the vial mouth.

[0009] An opening valve is located at the second end of the housing. The opening valve is used to close the second end of the housing and the puncture surface of the sealing rubber plug before opening.

[0010] As an alternative, the claw is integrally formed with the housing, and the claw is in the shape of an annular plate and is arranged at a 45° angle toward the second end of the housing.

[0011] As an alternative, the diameter of the clamp is smaller than the diameter of the mouth of the vial body but larger than the diameter of the neck of the vial body.

[0012] As an alternative, the rubber stopper is interference-fitted with the shell, and a protrusion is provided on the surface of the rubber stopper near the vial body, which fits and seals with the inner edge of the vial mouth.

[0013] As an alternative, the valve body of the opening valve is welded and sealed to the housing, and the valve cover of the opening valve extends beyond the edge of the housing.

[0014] As an optional option, the housing and opening valve can be made of any one of COC, CBC, COP, or PP.

[0015] The beneficial effects of this utility model are:

[0016] The freeze-drying compression cap is connected to the vial body via the claws of the shell and the vial mouth is sealed by the rubber stopper, realizing simple manual compression capping of the vial body, reducing the difficulty of capping, bringing more convenience to the use of vials, and allowing the freeze-drying solvent to evaporate through the breathing window on the shell before the shell and vial body are completely locked, thus meeting the storage requirements of freeze-dried products. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the freeze-drying compression cap provided in this embodiment of the utility model.

[0018] In the attached image:

[0019] 1. Vial body; 2. Shell; 3. Rubber stopper; 4. Opening valve; 5. Protrusion; 6. Breathing window; 7. Clamping claw. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0025] Please see Figure 1 As shown, this embodiment provides a freeze-drying compression cap, which is affixed to the vial body 1. The freeze-drying compression cap includes a shell 2, a rubber stopper 3, and an opening valve 4, wherein:

[0026] The shell 2 is a double-opening cylindrical shape. The inner diameter of the shell 2 is the same as the outer diameter of the bottle mouth of the vial body 1. The first end of the shell 2 is fitted onto the vial body 1. Several circumferentially distributed breathing windows 6 are provided on the middle side wall of the shell 2. A claw 7 is provided on the inner wall of the shell 2 between the breathing windows 6 and the first end of the shell 2. The breathing windows 6 are used as evaporation channels for the freeze-drying solvent when they abut against the claw 7 at the bottle mouth of the vial body 1.

[0027] The rubber stopper 3 is disposed inside the housing 2 and located between the breathing window 6 and the second end of the housing 2. The rubber stopper 3 is used to seal the mouth of the vial body 1 when the claw 7 passes over the upper edge of the mouth of the vial body 1 and locks the lower edge of the mouth of the vial body 1.

[0028] The opening valve 4 is located at the second end of the housing 2. The opening valve 4 is used to close the second end of the housing 2 and the puncture surface of the sealing rubber plug 3 before opening.

[0029] Thus, by using the latches 7 of the housing 2 to snap onto the vial body 1, and sealing the mouth of the vial body 1 with the rubber stopper 3, simple manual compression capping of the vial body 1 is achieved, reducing the difficulty of capping and bringing more convenience to the use of the vial. Furthermore, the freeze-drying solvent evaporates through the breathing window 6 on the housing 2 before the housing 2 and the vial body 1 are completely locked together, thus meeting the storage requirements of freeze-dried products.

[0030] Optionally, the claw 7 is integrally formed with the housing 2, and the claw 7 is in the shape of an annular plate and is arranged at an angle of 45° toward the second end of the housing 2.

[0031] Therefore, the 45° inclined claw 7 makes it easy to snap the bottle mouth of the vial body 1 into place and fix it, while ensuring that the rubber stopper 3 is subjected to uniform force, improving the sealing effect. Moreover, compared with the three-point snap-fit ​​structure, the snap-fit ​​is more stable and reliable.

[0032] Optionally, the diameter of the claw 7 is slightly smaller than the mouth diameter of the vial body 1 and slightly larger than the neck diameter of the vial body 1.

[0033] This allows the claw 7 to firmly grip the lower edge of the vial body 1 without damaging the vial body 1, ensuring that the claw 7 accurately fixes the vial body 1 and preventing leakage of the contents due to vibration or tilting during transportation and use, thereby further improving the overall sealing performance and safety of use.

[0034] Optionally, the rubber stopper 3 is interference-fitted with the housing 2, and a protrusion 5 is provided on the surface of the rubber stopper 3 near the vial body 1, the protrusion 5 is fitted with the inner edge of the vial mouth 1 for sealing.

[0035] Therefore, the rubber protrusion 5 can be adapted to the mouth of various sizes of vial body 1, thereby enhancing the sealing effect and preventing leakage of the contents of the vial.

[0036] Optionally, the valve body of the opening valve 4 is sealed to the housing 2 by laser welding or thermal welding, and the valve cover of the opening valve 4 extends beyond the edge of the housing 2.

[0037] Therefore, the sealing between the opening valve 4 and the housing 2 is ensured before opening, and the opening valve 4 can be easily opened manually when needed.

[0038] Optionally, the materials of the housing 2 and the opening valve 4 can be COC (cyclic olefin copolymer), CBC (cyclic olefin block copolymer), COP (cyclic olefin polymer), PP (polypropylene), etc. These materials can greatly increase the strength of the claw 7 in engaging with the vial body 1 and the overall structural strength, and greatly improve the sealing performance of the freeze-drying compression cap.

[0039] Specific crimping process:

[0040] When the freeze-drying cap is gently placed on the vial body 1, the inner diameter of the shell 2 is the same as the outer diameter of the vial mouth 1. Without external force, the shell 2 will temporarily hold the vial body 1 in place and will not move. At this time, the claw 7 just contacts the upper edge of the vial mouth 1. The vial mouth 1 is not yet blocked by the rubber stopper 3, and the breathing window 6 is the evaporation channel for the freeze-drying solvent. After the freeze-drying is completed, the freeze-drying cap is pressed down, and the claw 7 locks the lower edge of the vial mouth 1. The rubber stopper 3 makes a sealing contact with the vial mouth 1, thus achieving both freeze-drying and sealing functions.

[0041] In addition, the puncture surface of the rubber stopper 3 can be kept sterile before the valve 4 is opened.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A freeze-drying cap, which is affixed to the body of a vial (1), characterized in that, The freeze-drying press-molded cap includes a shell (2), a rubber stopper (3), and an opening valve (4), wherein: The shell (2) is a double-opening cylindrical shape. The inner diameter of the shell (2) is the same as the outer diameter of the bottle mouth of the vial body (1). The first end of the shell (2) is fitted onto the vial body (1). Several circumferentially distributed breathing windows (6) are provided on the middle side wall of the shell (2). A claw (7) is provided on the inner wall of the shell (2) between the breathing window (6) and the first end of the shell (2). The breathing window (6) is used as an evaporation channel for the freeze-drying solvent when the upper edge of the vial body (1) abuts against the claw (7). The rubber stopper (3) is disposed inside the housing (2) and located between the breathing window (6) and the second end of the housing (2). The rubber stopper (3) is used to seal the mouth of the vial body (1) when the claw (7) passes over the upper edge of the mouth of the vial body (1) and locks the lower edge of the mouth of the vial body (1). The opening valve (4) is disposed at the second end of the housing (2). The opening valve (4) is used to close the second end of the housing (2) and cover the puncture surface of the rubber plug (3) before opening.

2. The freeze-drying compression cap according to claim 1, characterized in that, The claw (7) is integrally formed with the housing (2), and the claw (7) is in the shape of an annular plate and is arranged at an angle of 45° toward the second end of the housing (2).

3. The freeze-drying compression cap according to claim 2, characterized in that, The diameter of the claw (7) is smaller than the mouth diameter of the vial body (1) and larger than the bottleneck diameter of the vial body (1).

4. The freeze-drying compression cap according to claim 1, characterized in that, The rubber stopper (3) is press-fitted with the housing (2). A protrusion (5) is provided on the surface of the rubber stopper (3) near the vial body (1). The protrusion (5) is sealed with the inner edge of the vial mouth (1).

5. The freeze-drying compression cap according to claim 1, characterized in that, The valve body of the opening valve (4) is welded and sealed to the housing (2), and the valve cover of the opening valve (4) extends beyond the edge of the housing (2).

6. The freeze-drying compression cap according to claim 1, characterized in that, The housing (2) and the opening valve (4) are made of any one of COC, CBC, COP, or PP.

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