The spray-coloring inside glass bottles is mainly used for products requiring internal coloring, such as perfume bottles, aromatherapy cups, and medicine bottles. The internal color of these products can enhance the visual appeal and elevate the product's class. The hot stamping gold (silver) technique on cosmetic glass bottles is a process that utilizes the principle of heat transfer to transfer the aluminum layer (gold or silver) from electrofoil to the surface of the substrate, creating a special metallic effect.

It is widely used for decoration and beautification on various materials, especially suitable for scenarios where product grade and visual effects need enhancement. Hard materials such as glass and ceramics: through special hot stamping (silver) techniques, metal effects can also be transferred onto these materials, thereby increasing their decorative and artistic appeal. For the printing process on cosmetic bottles, considerations can be made based on actual needs. If low cost and large-scale production are priorities, screen printing is a good choice.

To enhance product appeal, consider hot stamping/gilding techniques; for personalized color and luster customization, UV coating might be more suitable; digital printing is ideal for small-batch, personalized printing needs. The choice of process depends on specific design requirements, budget, and production volume. The interior and exterior coloring process of glass bottles involves multiple stages and elements, requiring selection and adjustment based on product needs and process characteristics. Through rational process design and operational control, the aesthetic and functional enhancement of glass bottle surfaces can be achieved.