1. Operating Procedures
1) Continuously sample and number the bags on the machine, with the sampling range covering the longitudinal and transverse sealing knife lengths.
2) Fill the packaging bag with an appropriate amount of water (or actual contents), accounting for approximately 1/2 to 1/3 of the small bag's capacity.
3) Seal the bag after exhausting the air; the sealing temperature is set according to the material structure. Note: The air must be fully exhausted before sealing; otherwise, it is impossible to accurately judge bag bulging and broken bag conditions.
4) General internal inspection conditions: Boiling at 100℃ for 40 minutes, retorting at 121℃ for 30 minutes.If the customer's usage conditions are higher than the above standards, implement the customer's standards.If unqualified after boiling/retorting, conduct a secondary confirmation based on the customer's actual usage conditions to decide whether to release the products.
5) After the boiling/retorting process, take out the bags for cooling (pay attention to scald prevention) and conduct product quality inspection.
2. Key Points of Packaging Bag Quality Inspection
1) Inspect both sides of each bag for defects such as discoloration, color bleeding (when the surface layer is nylon structure), bubbles, delamination (wrinkling and whitening), and liquid leakage; scrape the bag edge with a fingernail to check for delamination.
2) Gently press the bag body by hand to observe local false sealing and edge-running phenomena (the sealing state of transparent bags can be directly observed).
3) Tear from the tear notch to check for difficult tearing or serrated delamination during tearing.
4) Tear from the inside of the sealing edge outward to detect the heat-sealing strength by hand and check for peeling delamination.
5) Rub repeatedly to observe whether the sealing edge has delamination and whitening; testing can also be performed after folding.
6) For first-piece product inspection, send the samples to the testing laboratory for detection of appearance, peel strength, heat-sealing strength, and other relevant data.
3. Common Unqualified Phenomena
* Sealing edge opening
* Poor curing
* Aluminum plating oxidation
* Bubbles
* Discoloration
* Color bleeding
* Local false sealing
* Brittle sealing edge
* Delamination
* Difficult tearing
4. About Haide Packaging
As a professional manufacturer specializing in flexible packaging solutions, Haide Packaging is committed to providing high-quality, customized packaging products that meet global standards. With strict quality control, advanced production technology, and a focus on customer needs, we strive to deliver reliable packaging solutions and build long-term partnerships with clients worldwide.