Detailed Explanation of The Precision Manufacturing Process of Eye Shadow Powder Pressed Copper Sheet

As a very attractive cosmetics category in cosmetics, the key to its bright colors, fine texture and long-lasting makeup depends largely on the quality and manufacturing process of the copper sheet mold used to press the eye shadow powder. The precision manufacturing process of eye shadow powder pressed copper sheet is the basis for ensuring the quality of eye shadow products. This article will take you to learn about this high-precision manufacturing process in detail.

1. The role of copper sheet in eye shadow pressing

Eye shadow powder pressed copper sheet refers to the metal mold sheet used to press eye shadow powder, which is usually made of high-purity copper. Due to its excellent thermal conductivity and mechanical strength, the copper sheet can ensure that the eye shadow powder is evenly stressed during the pressing process, so that the molding is delicate and the structure is stable.

2. Raw material selection and preliminary processing

Precision manufacturing starts with raw materials. The copper material used to manufacture eye shadow powder pressed copper sheet must meet high purity standards to ensure uniform material and avoid defects in subsequent processing.

Copper material selection

Use high-purity oxygen-free copper to ensure that the material has good ductility and wear resistance.

Cutting and forming

Large pieces of copper are cut into copper blanks of preliminary size by CNC laser cutting or precision punching machines.

3. Precision machining

The copper blanks enter the high-precision machining link to ensure that the size and surface shape meet the requirements of eye shadow pressing.

CNC milling

The copper sheet is trimmed by CNC milling machines to ensure smooth edges and accurate sizes.

Drilling and slotting

According to the design drawings, tiny holes and grooves are processed on the copper sheet to facilitate molding and demolding when eye shadow powder is pressed.

Surface grinding and polishing

Use meticulous grinding and polishing processes to make the surface of the copper sheet reach mirror-level finish, avoid powder adhesion during pressing, and ensure that the surface of the finished eye shadow is smooth and delicate.

4. Heat treatment and surface treatment

In order to improve the hardness and wear resistance of the copper sheet, heat treatment and special surface treatment are usually performed during the manufacturing process.

Annealing treatment

Adjust the internal structure of the copper sheet, enhance toughness, and avoid cracks after processing.

Plating treatment

Some high-end copper sheets are nickel-plated or treated with other anti-corrosion treatments to improve corrosion resistance and service life.

5. Inspection and quality control

After manufacturing, the copper sheets need to be strictly inspected to ensure their dimensional accuracy and surface quality.

Dimension measurement

The dimensions and tolerances of the copper sheets are detected using a three-dimensional coordinate measuring machine (CMM) to ensure that the dimensions of each copper sheet are within a strict range.

Surface defect detection

A microscope or laser scanning device is used to detect scratches, pits or impurities on the surface.

Performance test

The pressure test is used to confirm whether the copper sheet is stable when actually pressing the eye shadow powder.

6. Finished product application

The eye shadow powder pressed copper sheets, which are precisely manufactured through the above multiple processes, are widely used in major cosmetics production lines. They ensure the uniform compaction and delicate molding of the eye shadow powder, so that the final product has uniform color and smooth touch, meeting consumers' pursuit of high-quality cosmetics.