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material selection:
The material selection of cosmetic bottle suit has a direct impact on the sealing performance. When selecting materials, manufacturers typically consider the material's flexibility, elasticity, wear resistance, and inertness to chemicals. Plastic bottle sleeves are often made of polyethylene (PE), polypropylene (PP) and other materials, which have good elasticity and sealing properties. In high-end products, the metal bottle caps of glass bottles are usually sealed by rubber gaskets or other sealing materials.
Sealing structure design:
The sealing structure design of cosmetic bottle suit is the core to ensure the sealing performance of the product. This includes the way the bottle cap is combined with the bottle mouth, such as the thread structure, the use of elastic washers, etc. A good sealing structure needs to ensure a tight fit when closed to prevent the penetration of gas and moisture. Some cosmetic bottle suits also use double-layer sealing structures, such as double-layer bottle caps, to improve airtightness and ensure that the product is not affected by the external environment for a long time.
Bottle mouth design:
The design of cosmetic bottle suit directly affects the sealing performance. The size, shape and flatness of the bottle mouth will affect the sealing between the cosmetic bottle suit and the bottle cap. In order to ensure the sealing performance, the bottle mouth is usually designed and manufactured accurately to ensure that the cosmetic bottle suit can completely seal the bottle mouth to prevent the entry of external substances.
Sealing material selection:
Some cosmetic bottle suit designs use special sealing materials, such as rubber pads, silicone, etc. These materials have good elasticity and corrosion resistance, and can form a good seal between the bottle cap and the bottle mouth to prevent the penetration of external moisture and oxygen.
Packaging structure design:
The overall packaging structure also affects the sealing performance of the cosmetic bottle suit. For example, some high-end cosmetic bottle suits may use a composite layer or add a special sealing layer inside to improve the overall sealing. In addition, the integrity and stability of the packaging structure are also important factors in ensuring sealing.
