Why do glass bottles produce bubbles and scratches after forming?

[ June 28, 2024 ]

1.When the glass blank falls into the initial mold, it can not accurately enter the initial mold, and the mold wall friction is too large, forming a fold. After blowing, the crease spreads and enlarges, forming a fold in the glass bottle body

2. The cutting scar of the feeder is too large, and the cutting scar appears in the bottle after individual glass bottles are formed

3. The glass bottle initial mold and molding material is poor, the density is not enough, and the oxidation is too fast after high temperature, forming small concave points on the mold surface, resulting in the glass bottle surface after forming is not smooth.

4. The poor quality of the glass mold oil will make the mold lubricating enough, the dropping speed is reduced, and the material type is changed too fast.

5. The design of the initial mold is unreasonable, the mold cavity is large or small, and after the material drops into the molding mold, the positive blowing diffusion is uneven, which will make the glass bottle appear spots

6. The machine drop speed is not uniform, improper adjustment of the air nozzle will make the glass bottle initial mold and mold temperature is not coordinated, easy to create cold spots in the glass bottle body, directly affecting the finish.

7. The glass liquid in the kiln is not clean or the material temperature is not uniform, which will also make the glass bottle appear bubbles, small particles, and small hemp.

8. The ranks of machine speed too fast or slow will appear uneven glass bottle, bottle wall thickness is different, resulting in speckle.

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Why do glass bottles produce bubbles and scratches after forming?

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