Basic Introduction of Eye Shadow Powder Pressed Copper Sheet: The Complete Process From Raw Materials To Finished Products

In the field of cosmetics production, eye shadow powder pressed copper sheet is an important intermediate link to achieve eye shadow shape and packaging refinement. It not only bears the function of container support, but also affects the appearance and use experience of the product. This article will take you to understand the complete process from raw material selection to finished product delivery, and analyze the key of each process step by step.

1. Selection of high-quality raw materials

Eye shadow powder pressed copper sheet is usually made of high-purity electrolytic copper or copper alloy as raw material. These copper materials have good ductility and thermal conductivity, which can meet the needs of subsequent stamping and forming. Manufacturers will strictly screen copper coils according to the requirements of different models and thicknesses to ensure that the surface is flat, free of oxidation spots, and meets food grade or cosmetic grade safety standards.

2. Precision cutting and surface treatment

The selected copper coil will first enter the cutting process, and use a high-precision slitting machine to cut it into sheets that meet the mold specifications. After cutting, the surface of the copper sheet usually needs to be treated with anti-oxidation or lightly polished to increase the adhesion and aesthetics of subsequent processes. Some high-end brands will also pre-treat the anti-fingerprint coating at this stage to further enhance the texture.

3. Stamping and forming

This is the core step of the production process. The pre-treated copper sheet will be placed in the stamping machine, and a customized mold will be used for high-tonnage stamping to form the grooves and outer edges that conform to the structure of the eyeshadow palette. The precision of the forming directly determines the smoothness of the subsequent powder filling and sealing. Therefore, manufacturers usually set up a fully automatic detection device in the stamping process to ensure that each copper sheet is of standard size, without deformation or cracks.

4. Cleaning and drying

After the stamping is completed, oil stains and tiny metal chips remain on the surface of the copper sheet. At this time, a neutral detergent should be used for ultrasonic cleaning to completely remove impurities. Subsequently, the copper sheet is quickly dried through a hot air circulation drying system to avoid water stains and oxidation.

5. Spraying and surface treatment

In order to improve the corrosion resistance of the copper sheet and its adhesion to the eyeshadow powder, surface spraying is an indispensable step. Factories usually use environmentally friendly resins or inks that meet the EU REACH standard for spraying. After spraying, constant temperature curing is required to firmly bond the coating to the copper sheet. This stage not only ensures the durability of the finished product, but also gives the copper sheet a more delicate touch and gloss.

6. Eyeshadow powder pressing

The treated copper sheet is sent to the powder pressing process. The prepared eyeshadow powder is first evenly filled in the copper sheet, and then compacted by a high-pressure molding machine to make the powder dense and not easy to fall off. Different powder formulas and color numbers have strict requirements on pressing pressure and time, which must ensure that the powder is firmly attached and maintain a delicate touch.

7. Finished product assembly and testing

The pressed copper sheet will enter the finished product assembly link in turn, and will be assembled into a complete eyeshadow tray together with the shell, lenses and other parts. After assembly, appearance and function tests are also required, such as powder drop rate, wear resistance, color uniformity and sealing. Products that meet the standards will be labeled and packaged for storage.

Conclusion

From the selection of high-purity copper materials to precision stamping, spraying and powder pressing, every process is refined to ensure that the eyeshadow powder pressed copper sheet is both beautiful and durable. It is not only an important component of the eyeshadow palette, but also a reflection of the quality and brand image of cosmetics. Understanding its production process will help consumers and industry insiders understand the rigorous craftsmanship and high-standard manufacturing spirit behind it.