Common quality testing methods for glass bottles

As a commonly used packaging container, glass bottles are widely used in food, medicine, chemical and other industries. In order to ensure the quality and safety of glass bottles, strict quality inspection must be carried out. This article will introduce the common quality inspection methods of glass bottles, which mainly include appearance inspection, dimensional measurement, stress test, internal pressure resistance test, impact resistance test, thermal shock resistance test, chemical stability test, printing and color difference inspection, etc.

1. Appearance inspection

Appearance inspection is the first step in quality inspection of glass bottles. Inspectors should conduct a comprehensive inspection of the body, mouth, bottom and other parts of the glass bottle through visual inspection, hand feeling, etc. Mainly observe whether the glass bottle has cracks, bubbles, impurities, scratches and other defects. At the same time, check whether the bottle mouth is flat and smooth, and whether the bottom of the bottle is stable.

2. Size measurement

Dimensional measurement is an important means of accurate quantitative evaluation of glass bottles. By using professional measuring tools, such as calipers, micrometers, etc., measure key dimensions such as the height, diameter, and wall thickness of the glass bottle. The measurement results should be compared with production standards to ensure that the size of the glass bottle meets the specified requirements.

3. Stress test

Stress testing is mainly used to evaluate the resistance of glass bottles to deformation under external forces. By applying a certain external force, observe whether the glass bottle is deformed, broken, etc., so as to determine whether its stress performance is qualified.

4. Internal pressure test

The internal pressure test is to test the pressure resistance of the glass bottle when it withstands internal pressure. During the test, the glass bottle is pressurized to observe whether it leaks, breaks, etc. This test is of great significance to ensure that safety accidents do not occur during storage and transportation of glass bottles.

5. Impact resistance test

The impact test is to simulate the impact that glass bottles may receive during transportation and use to evaluate their impact resistance. During the test, the glass bottle is placed on the impact table and a certain amount of impact energy is applied to observe whether the glass bottle is broken or damaged.

6. Thermal shock resistance test

Thermal shock resistance testing is used to evaluate the stability of glass bottles during temperature changes. During the test, the glass bottles were circulated in alternating hot and cold environments to observe whether cracks, ruptures, etc. appeared. This test helps ensure that glass bottles can withstand different temperature conditions during storage and transportation.

7. Chemical stability testing

Chemical stability testing evaluates whether a glass bottle will react chemically or corrode when exposed to different chemicals. During the test, the glass bottle is brought into contact with different chemical reagents to observe whether discoloration, spots, etc. appear on its surface to determine whether its chemical stability is good.

8. Printing and color difference inspection

For glass bottles printed with logos or patterns, printing and color difference inspection are also required. Inspectors should check whether the printed content is clear and accurate through visual comparison, and use tools such as a colorimeter to detect whether the color difference of the glass bottle meets the requirements.

To sum up, the common quality inspection methods for glass bottles cover appearance inspection, dimensional measurement, stress test, internal pressure resistance test, impact resistance test, thermal shock resistance test,