As a professional Glass Bottle Manufacturer, we understand that flawless packaging is critical for your brand’s success. Therefore, our Quality Control (QC) team follows a rigorous inspection process for every batch.
1. Capacity & Dimensions Checked by Our Glass Bottle Manufacturer
First, our inspectors verify the exact capacity, which ranges from 500ml to 950ml. We measure the bottle diameter and total height with a tolerance of ±2 mm. Furthermore, we carefully measure the wall thickness (±0.2 mm) and bottom thickness. For example, the bottom thickness for 500ml bottles must not be less than 1.5mm. Consequently, we use precise calipers to check every single bottle before packaging. If any bottle exceeds these ranges, we immediately set it aside.
2. Inspecting for Defects and Thermal Shock
Next, as a dedicated Glass Bottle Manufacturer, we focus on the glass surface and structural integrity. Our team wipes the bottles clean and rejects any items with black spots, scratches, or internal glass debris. Additionally, we inspect the bottle mouth to ensure it is smooth, even, and free of jagged edges or bubbles. The bottom must be stable and level, and the mold lines must be subtle.
Moreover, because borosilicate glass must withstand extreme temperatures, we conduct strict thermal shock tests. We pour boiling water into the bottles to test heat resistance. In addition, we fill bottles with water and place them in a freezer to verify they remain intact under cold conditions.
3. Testing Accessories and Packaging
Beyond the glass itself, our Glass Bottle Manufacturer team also tests all accessories. Every lid must contain an undamaged silicone gasket that is perfectly seated. We fit each lid onto the bottle to test for smooth closure. Furthermore, we turn the filled bottles upside down to check for leaks. We also verify that the silicone sleeves and fabric covers fit perfectly. Finally, we inspect the outer carton and box to ensure they are clean and free of stains.
4. Verifying Logo and Surface Finishing
Finally, as a reliable Glass Bottle Manufacturer, our QC team inspects the logo application. We check that the logo is affixed straight and that its size, color, and position match your exact requirements. We reject any bottles where the logo is blurry, bubbled, ghosted, missing, or stained.
Conclusion
Because we implement these strict procedures, we guarantee high-quality packaging that protects your product. Are you looking for a reliable Glass Bottle Manufacturer in China? Connect with our team today to discuss your next project.
Explore our full packaging catalog at https://diviniopackaging.com/ or contact us directly for a quote.
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