When encountering a glass bottle, the first notable feature is its clarity. A crystal-clear glass bottle creates a clean and appealing visual impression for customers. Additionally, the strength and quality of the glass bottle provide reassurance about the product’s safety and durability. To enhance the quality and strength of glassware, manufacturers employ various techniques, such as heat and cold spraying or injecting specialized powders into the bottle’s surface and interior to minimize cracks and improve strength.
Methods for Enhancing Glass Bottle Strength
- Heat and Cold Spraying
- By spraying treatments onto the bottle’s surface or interior, manufacturers can strengthen the glass structure, making it more resistant to cracking or breaking.
- This process also improves the bottle’s durability and reliability during transportation and usage.
- Powder Injection Method
- This advanced method involves applying powdered materials to the glass bottle’s interior and surface.
- The process reduces the occurrence of cracks, resulting in enhanced strength and improved product quality.
Principle of the Powder Injection Method
The powder injection method works as follows:
- Injection of Ammonium Sulfate Particles
- When the glass bottle exits the forming mold of the bottle-making machine, an automated powder injection machine introduces fine ammonium sulfate particles into the bottle.
- These particles are uniformly distributed across the bottle’s surface.
- Annealing Process
- After the powder is injected, the glass bottles are sent into an annealing furnace.
- The uniform distribution of the powder ensures even heat absorption throughout the bottle, reducing the likelihood of cracks.
- Powder Injection System
- The automated system consists of a hopper, storage tube, and dispensing nozzle.
- A horizontally sliding cylinder with a feeding hole allows precise dosing of the powder, which is evenly introduced into the bottle.
- Improved Strength
- The annealed bottles demonstrate significantly fewer cracks and improved structural integrity.
- The process results in bottles with higher strength and reduced defects, enhancing production efficiency.
Benefits of Powder Injection
- Crack Reduction: Even distribution of the powder minimizes the formation of cracks, particularly at the bottle’s base.
- Enhanced Durability: Bottles undergo additional annealing after the injection process, ensuring better resistance to stress and environmental factors.
- Higher Production Efficiency: The improved quality reduces the need for reworking or replacements, increasing output.
- Customer Confidence: Stronger, defect-free glass bottles improve product presentation and reliability, boosting consumer trust.