Analysis of Bubbles and Scratches in Glass Bottle Forming Process

I. Formation of Bubbles

Bubbles are a common phenomenon during glass bottle forming. Their occurrence is influenced by multiple factors including raw materials, manufacturing processes, and equipment. Firstly, excessive volatile components in glass raw materials release gases during high-temperature melting, leading to bubble formation. Second, precise control of both melting and forming temperatures is critical; temperatures that are too high or too low can lead to bubble formation. Additionally, mold sealing integrity and the effectiveness of venting systems also influence bubble occurrence.

II. Impact of Bubbles

Though small, bubbles significantly affect glass bottle quality. They create surface imperfections, reducing the product's aesthetic appeal. Furthermore, large or numerous bubbles may compromise the bottle's strength and seal integrity, potentially causing breakage during use.

III. Scratch Formation

Scratches are another common issue during glass bottle forming. They primarily result from equipment wear, mold damage, or improper operation. For instance, severely worn rotating components may leave scratches on bottles during forming. Surface damage to molds or embedded foreign objects can also create scratches. Furthermore, operators failing to protect bottles during handling may inadvertently cause scratches.

IV. Impact of Scratches

Scratches compromise both the aesthetic appeal and service life of glass bottles. Minor scratches may only affect appearance, but severe scratches can reduce bottle strength, making them prone to breakage. Scratches are also a key inspection item in product quality control.

V. Solutions

To address bubble and scratch issues, implement the following measures:

1. Strictly control raw material quality to minimize volatile components.

2. Optimize melting and forming temperatures while ensuring thermal stability.

3. Inspect and maintain equipment, promptly replacing severely worn components.

4. Conduct regular mold inspections, repairing or replacing damaged molds.

5. Enhance operator training to improve skills and accountability.

In summary, bubbles and scratches are common issues in glass bottle forming that significantly impact product quality. Manufacturers should therefore prioritize addressing these problems by implementing effective preventive and control measures.