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The bottle mouth design of plastic cosmetic bottles is a crucial part of packaging design. It is directly related to the use experience of cosmetics, the freshness of the product and the aesthetic appearance of the product.
Type selection:
The choice of bottle mouth type is one of the first considerations in design. Different types of bottle mouths are suitable for different forms of cosmetics, such as liquid, paste or powder. Common bottle mouth types include dropper mouth, pump head, spray mouth, squeeze bottle mouth, etc. Designers need to choose the most appropriate bottle mouth type based on the characteristics of the cosmetics and user convenience.
Sealing design:
The sealing design of the bottle mouth directly affects the freshness of cosmetics. When not in use, the bottle mouth should be effectively sealed to prevent air, moisture and other external contaminants from entering the bottle, thereby extending the shelf life of the product. Some bottle mouth designs use technologies such as sealing rings or sealing films to improve sealing.
Fluency and control:
For liquid cosmetics, bottle finish smoothness and user control are key factors. Designers need to ensure that the bottle mouth is designed so that cosmetics can be taken out smoothly and the user can easily control the flow rate of the liquid. The design in this area may involve the shape of the nozzle, the design of the liquid flow channel, etc.
User friendliness:
The design of the bottle mouth should consider the user's usage habits and convenience. Some bottle mouths may be designed as rotating caps, which are convenient for users to unscrew or tighten; while spray bottle mouths may be designed as push-type caps, allowing users to use them with just one tap. Taking into account the needs of users of different age groups and special groups, designers need to ensure that the bottle mouth design complies with the principle of user-friendliness.
Leak-proof design:
For liquid cosmetics, leak-proof design is a crucial aspect. The bottle mouth needs to be completely leak-proof when closed to prevent leakage of cosmetics during transportation or storage. Designers may use special leak-proof structures or materials to ensure that the bottle mouth remains airtight during use.
material selection:
The choice of material for the bottle mouth is also an important aspect of the design. Common materials include polyethylene (PE), polypropylene (PP), polystyrene (PS), etc. Designers need to select suitable materials based on the nature of cosmetics and packaging needs to ensure the chemical resistance and stability of the materials to prevent adverse reactions between materials and cosmetics.
Hygienic design:
The hygienic design of the bottle finish is crucial to protect cosmetics from bacteria and contamination. Some bottle designs may include dust caps or sealing films to ensure the product remains sanitary when not in use. Designers need to consider the characteristics of cosmetics and choose appropriate hygienic design measures.
