PET cosmetic bottle mouth sealing structure

Abstract

A PET cosmetic bottle mouth sealing structure, including PET cosmetic bottle, the bottle mouth of the PET cosmetic bottle is provided with a threaded cap, the inside of the threaded cap is fixedly connected with a guide frame, the inside of the guide frame is slidably installed with a sealing plug, the lower end of the sealing plug is sealed in the bottle mouth of the PET cosmetic bottle. A spring is arranged between the threaded cap and the sealing plug, the upper end of the spring is in contact with the threaded cap, and the lower end of the spring is in contact with the sealing plug. The sealing plug is directly taken out by the threaded cap, and is separated from the PET cosmetic bottle. When sealing, the sealing plug is aligned in the bottle mouth of the PET cosmetic bottle, the threaded cap is pressed downward until the threaded cap is butt-jointed with the PET cosmetic bottle, the threaded cap is tightened, the sealing plug is pressed and sealed in the bottle mouth of the PET cosmetic bottle by the threaded cap, and the bottle mouth of the PET cosmetic bottle is conveniently opened or sealed.

Description

Technical Field

[0001] This utility model belongs to the field of PET cosmetic bottle technology, and in particular relates to a sealing structure for the mouth of a PET cosmetic bottle. Background Technology

[0002] PET cosmetic bottles are cosmetic packaging containers made of polyethylene terephthalate (PET) plastic. They are characterized by good transparency, light weight, high strength, and resistance to chemical corrosion, clearly displaying the contents of lotions, toners, sprays, etc., while protecting the product's ingredients from damage. They come in various shapes (such as cylindrical) and are easy to customize with labels and branding. They are suitable for multiple dispensing methods, including pumps and sprays, and are also recyclable. Due to their combination of practicality and environmental friendliness, they have become a widely used packaging choice in the cosmetics industry.

[0003] Some cosmetics are in a gel-like state and cannot flow back quickly like water. When gel-like cosmetics stick to the inside of the sealed cap, it is difficult to notice and clean the inside of the cap. When tightening again, some gel-like cosmetics will be squeezed out of the bottle little by little, contaminating the exterior of the cosmetic bottle. Therefore, this type of cosmetic bottle uses a two-layer stopper and cap. The stopper is used for sealing, and the cap is used to press the stopper tightly. When the stopper is contaminated with cosmetics, it can be cleaned in time. The stopper isolates and prevents a large amount from entering the threaded area of ​​the cap. However, the method of separating the stopper and the cap requires two operations to fully open and reseal. Therefore, the opening and resealing operations are not continuous, which makes the conventional PET cosmetic bottle mouth sealing structure more troublesome to operate.

[0004] To address this issue, we propose a sealing structure for the opening of a PET cosmetic bottle. Utility Model Content

[0005] The purpose of this invention is to solve the problem that conventional PET cosmetic bottle mouth sealing structures are relatively cumbersome to operate, and to propose a PET cosmetic bottle mouth sealing structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A sealing structure for a PET cosmetic bottle opening includes a PET cosmetic bottle with a threaded cap threaded onto the bottle opening. A guide frame is fixedly connected inside the threaded cap, and a sealing plug is slidably installed inside the guide frame. The lower end of the sealing plug is inside the bottle opening. When the threaded cap is unscrewed, the sealing plug is directly pulled out through the cap, detaching from the PET cosmetic bottle. To seal, the sealing plug is aligned with the inside of the bottle opening, and the threaded cap is pressed down until it aligns with the bottle. The threaded cap is then tightened, using its downward pressure to compress and seal the sealing plug within the bottle opening, facilitating the opening and sealing of the PET cosmetic bottle.

[0007] Preferably, a spring is provided between the threaded cap and the sealing plug, with the upper end of the spring contacting the threaded cap and the lower end of the spring contacting the sealing plug. When the threaded cap is unscrewed, the spring force acts on the sealing plug, causing it to extend. When tightened again, the extended sealing plug is aligned with the mouth of the PET cosmetic bottle. The extended state of the sealing plug facilitates the user's operation and alignment of the PET cosmetic bottle and the sealing plug.

[0008] Preferably, the threaded cap includes a cap body, the upper end of which has an air hole, and the lower part of the cap body is fixedly connected to a pressure ring. The lower part of the cap body is threaded onto a PET cosmetic bottle. After the cap body is tightened onto the PET cosmetic bottle, the pressure ring presses down on the lower part of the sealing plug.

[0009] Preferably, the threaded cap further includes a straightening post, the upper end of which is fixedly connected to the cap body. The spring is movably sleeved outside the straightening post, and the upper end of the spring is in movable contact with the cap body. The straightening post is inserted into the spring to correct its posture.

[0010] Preferably, the guide frame includes a guide ring, and a connecting rod is fixedly connected to the outside of the guide ring. The lower end of the connecting rod is fixedly connected to the upper end of the pressure ring. The guide ring guides the lifting and lowering of the sealing plug.

[0011] Preferably, the sealing plug includes a movable sleeve, which is slidably installed inside the guide ring. A plug body is fixedly connected to the lower end of the movable sleeve. The spring is movably inserted inside the movable sleeve, and a limit ring is fixedly connected to the upper end of the movable sleeve. The limit ring blocks the guide ring, preventing the sealing plug from falling off.

[0012] In summary, the technical effects and advantages of this utility model are as follows: 1. After unscrewing the screw cap, the sealing plug will come out directly from the PET cosmetic bottle. To seal, align the sealing plug with the inside of the PET cosmetic bottle opening and press the screw cap down until it aligns with the PET cosmetic bottle. Tighten the screw cap and use it to press the sealing plug down to seal it tightly inside the PET cosmetic bottle opening, making it easy to open or seal the PET cosmetic bottle opening.

[0013] 2. After unscrewing the screw cap, use the spring force to extend the sealing plug. When tightening it again, align the extended sealing plug with the mouth of the PET cosmetic bottle. The extended state of the sealing plug makes it easy for the user to align the PET cosmetic bottle and the sealing plug. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the threaded cap structure of this utility model; Figure 3 This is a schematic diagram of the guide frame structure of this utility model; Figure 4 This is a schematic diagram of the sealing plug structure of this utility model.

[0015] In the diagram: 1. PET cosmetic bottle; 2. Threaded cap; 3. Guide frame; 4. Sealing plug; 5. Spring; 21. Cap body; 22. Pressure ring; 23. Correcting column; 24. Air hole; 31. Guide ring; 32. Connecting rod; 41. Movable sleeve; 42. Limiting ring; 43. Plug body. Detailed Implementation

[0016] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.

[0017] like Figure 1 As shown, a PET cosmetic bottle mouth sealing structure includes a PET cosmetic bottle 1. A threaded cap 2 is threadedly installed at the mouth of the PET cosmetic bottle 1. A guide frame 3 is fixedly connected inside the threaded cap 2. A sealing plug 4 is slidably installed inside the guide frame 3. The lower end of the sealing plug 4 is inserted inside the mouth of the PET cosmetic bottle 1. After unscrewing the threaded cap 2, the sealing plug 4 is directly pulled out through the threaded cap 2, thus detaching it from the PET cosmetic bottle 1. To seal, the sealing plug 4 is aligned with the mouth of the PET cosmetic bottle 1, and the threaded cap 2 is pressed down until it aligns with the PET cosmetic bottle 1. The threaded cap 2 is then tightened, using the downward pressure of the threaded cap 2 to compress and seal the sealing plug 4 inside the mouth of the PET cosmetic bottle 1.

[0018] like Figure 1As shown, a spring 5 is provided between the threaded cap 2 and the sealing plug 4. The upper end of the spring 5 contacts the threaded cap 2, and the lower end of the spring 5 contacts the sealing plug 4. After the threaded cap 2 is unscrewed, the elastic force of the spring 5 acts on the sealing plug 4, causing the sealing plug 4 to extend. When tightened again, the extended sealing plug 4 is aligned with the bottle opening of the PET cosmetic bottle 1.

[0019] like Figure 1 and 2 As shown, the threaded cap 2 includes a cap body 21. The upper end of the cap body 21 has a perforated air hole 24. A pressure ring 22 is fixedly connected to the lower part of the cap body 21. The lower part of the cap body 21 is threaded onto the PET cosmetic bottle 1. After the cap body 21 is tightened onto the PET cosmetic bottle 1, the lower part of the sealing plug 4 is pressed downward by the pressure ring 22.

[0020] like Figure 1 and 2 As shown, the threaded cap 2 also includes a straightening post 23. The upper end of the straightening post 23 is fixedly connected to the cap body 21. The spring 5 is movably sleeved outside the straightening post 23, and the upper end of the spring 5 is in movable contact with the cap body 21. The straightening post 23 is inserted into the spring 5 to correct the posture of the spring 5.

[0021] like Figure 1 , 2 As shown in Figure 3, the guide frame 3 includes a guide ring 31, and a connecting rod 32 is fixedly connected to the outside of the guide ring 31. The lower end of the connecting rod 32 is fixedly connected to the upper end of the pressure ring 22. The guide ring 31 is used to guide the sealing plug 4 to rise and fall.

[0022] like Figure 1 , 3 As shown in Figure 4, the sealing plug 4 includes a movable sleeve 41, which is slidably installed inside the guide ring 31. The lower end of the movable sleeve 41 is fixedly connected to the plug body 43. The spring 5 is movably inserted inside the movable sleeve 41, and the upper end of the movable sleeve 41 is fixedly connected to a limit ring 42. The limit ring 42 is used to block the guide ring 31 to prevent the sealing plug 4 from falling off.

[0023] Working principle: After unscrewing the screw cap 2, the sealing plug 4 is directly brought out through the screw cap 2, so that it is separated from the PET cosmetic bottle 1. When sealing, align the sealing plug 4 with the mouth of the PET cosmetic bottle 1 and press the screw cap 2 down until the screw cap 2 is aligned with the PET cosmetic bottle 1. Tighten the screw cap 2 and use the screw cap 2 to press the sealing plug 4 down to seal it tightly inside the mouth of the PET cosmetic bottle 1.

[0024] The above description is only a preferred embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed by the utility model, based on the technical solution and the utility model concept, should be included within the protection scope of the utility model.

[0025] The description briefly mentions the application direction of the utility model in relation to existing technologies known to those skilled in the art without modification, and combines them with the utility model to form a complete technology; it avoids excessive popularization of technologies known to those skilled in the art, in order to help those skilled in the art quickly understand the main content of the utility model.

Claims

1. A sealing structure for the mouth of a PET cosmetic bottle, comprising a PET cosmetic bottle (1), characterized in that: The PET cosmetic bottle (1) has a threaded cap (2) threaded at the bottle mouth. A guide frame (3) is fixedly connected inside the threaded cap (2). A sealing plug (4) is slidably installed inside the guide frame (3). The lower end of the sealing plug (4) is inside the bottle mouth of the PET cosmetic bottle (1).

2. The sealing structure for the mouth of a PET cosmetic bottle according to claim 1, characterized in that: A spring (5) is provided between the threaded cap (2) and the sealing plug (4). The upper end of the spring (5) contacts the threaded cap (2), and the lower end of the spring (5) contacts the sealing plug (4).

3. The sealing structure for the mouth of a PET cosmetic bottle according to claim 2, characterized in that: The threaded cap (2) includes a cap body (21), the upper end of which is hollowed out with an air hole (24), and the lower part of the cap body (21) is fixedly connected with a pressure ring (22). The lower part of the cap body (21) is threadedly installed on a PET cosmetic bottle (1).

4. The PET cosmetic bottle mouth sealing structure according to claim 3, characterized in that: The threaded cover (2) also includes a straightening column (23), the upper end of which is fixedly connected to the cover body (21), and the spring (5) is movably sleeved outside the straightening column (23), with the upper end of the spring (5) in movable contact with the cover body (21).

5. The sealing structure for the mouth of a PET cosmetic bottle according to claim 3, characterized in that: The guide frame (3) includes a guide ring (31), and a connecting rod (32) is fixedly connected to the outside of the guide ring (31). The lower end of the connecting rod (32) is fixedly connected to the upper end of the pressure ring (22).

6. The sealing structure for the mouth of a PET cosmetic bottle according to claim 5, characterized in that: The sealing plug (4) includes a movable sleeve (41), which is slidably installed in the guide ring (31). The lower end of the movable sleeve (41) is fixedly connected to the plug body (43). The spring (5) is movably inserted in the movable sleeve (41). The upper end of the movable sleeve (41) is fixedly connected to the limit ring (42).

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