When purchasing lunch boxes, product quality is directly related to the safety and experience of use. Formal lunch box factories have a set of strict quality inspection standards. Understanding these standards can help us better judge the quality of products.
1. Raw material inspection
The factory will strictly inspect all incoming raw materials:
Plastic particles: meet food grade standards, detect the content of harmful substances such as heavy metals and plasticizers
Stainless steel materials: detect whether the metal components meet the standards
Silicone sealing rings: detect whether there are odors and harmful substances
2. Production process inspection
Multiple inspections will be carried out on the production line:
Injection molding inspection: Check for burrs, bubbles, deformation and other problems
Dimensional accuracy inspection: Use calipers and other tools to measure whether the dimensions of each part meet the standards
Sealing test: Check the sealing performance through pressure test
Heat resistance test: Test whether it can withstand high and low temperatures
3. Finished product inspection
The following inspections need to be completed before the finished product leaves the factory:
Appearance inspection: Whether the surface Smoothness, uniform color, clear printing
Functional test: whether the lid opens and closes smoothly, whether the buckle is firm
Drop test: check whether it is broken by dropping from a specified height
Odor test: ensure that there is no pungent plastic smell
4. Food safety testing
The most important testing link:
Heavy metal testing: the content of heavy metals such as lead and cadmium must meet the standard
Migration test: test whether harmful substances will be precipitated when in contact with food
Microbial testing: ensure that the product hygiene meets the standard
5. Environmental testing
Modern factories also conduct:
Recyclability testing
Degradability testing
Environmental certification testing
6. Packaging testing
Finally, check:
Packaging integrity
Label standardization
Transportation safety
How to judge whether the factory testing is standardized?
Check the test report: Regular factories can provide third-party test reports
Understand the testing equipment: Good factories are equipped with professional laboratories
Ask about the testing process: Perfect factories have detailed testing records
