What is the manufacturing process of the button

Unsaturated resin+curing agent |+accelerator+color paste mixing -- bar stock workshop processing -- bar blank -- blank selection workshop -- plate stock workshop processing -- slab special buckle workshop -- polishing workshop finished product workshop
A. Production process of bar stock:
B. Production process of sheet metal:
C. Functions and standards of billet separation:
Exclude unqualified products before the next process
① The blank thickness is in accordance with the company's requirements for this product: the bar ± 0.2mm is the genuine product, and the plate ± 0.1mm is the genuine product (qualified product).
② The color and pattern change, which do not meet the requirements of the variety, is a waste product.
③ The model is poor, and the broken edge, core extraction and bubble are all waste products.
D. Production requirements and standards of the buckle workshop
① The shape is consistent with that of the sample, including the size of the fine edge buckle, the radian of the face and back, etc.
② According to the inspection standard, the following phenomena are all waste products:
A. Needle hole: the needle hole is broken and cracked, the eye hole is not in the center of the button, the four hole positions are not square, the eye hole is not perpendicular to the button surface, there are few holes or the needle is not penetrated after the broken needle, the front is large and the back is small, the dark eye button, the hole edge is fried, and there is no hole.
B. Buckle edge: thick on one side and thin on the other; The overall thickness of the button is correct, and the side is thick and the side is thin.
C. Compared with the sample button, the overall thickness of the button is thicker or thinner, and four consecutive buttons are thicker or thinner during machine turning.
E. Acceptance standard of finished products
a) Finished product standard
1. The color, pattern and model are the same as those of the sample or the product.
2. The needle hole is upright and symmetrical, and the needle distance and needle hole size meet the standard.
3. The luminosity meets the requirements.
4. The surface and back shall be free of crack, crack and uneven edge thickness.
5. Packaging is classified according to style, color, pattern and model.