The lamination packaging bags are the most commonly used packaging materials in our daily life, so how should we distinguish the quality of multilayer laminated bags in our daily life?
1. When purchasing, first smell if there is any odor. If there is an odor, it will not meet the hygiene standards and may affect the normal use of the laminated bags. On the contrary, if there is no odor, we check the transparency of the bags, whether the clarity is uniform, whether there are impurities, etc.
2. For the fully printed bags, we need check the printing quality, First to check the colors match with your artwork design, Is there any color difference, Normally, the color matches ≥98% for gravure printer. But for digital printer, the colors could matched 100%. Second smells the ink. The ink have different grade, so you can smells it and to check if there big smells, the better quality ins is no smells on printing surface. And then check the fullness of the printed color, It is related to the quality of the plate and the quality of the ink. So you need keep your eyes on it.
3. Smells the inside. Normally, there will be slightly plastic smells. But no other pungent smell. If there is pungent smells inside the bags, then the supplier use solvent compounding, It is not food contact safety. Now The quality manufacture all use the dry laminating machines, It is solvent free and food contact safety without smells.
4. Check the surface. Keep your eyes on the surface, Is there any Unevenness, delamination, bubbles and scratches
5. Tear the bags from sealing seam, Tear it and if it is so easy to tear from sealing seam, Then the material is not virgin, Maybe your supplier use cheaper recycled material to reduce the price.
6. Test your bags by third party, If your bags need meet microwave safe or high temperature resistant then you can find a third lab to test it, or boiling test by your self.
One price is one share, so pay more attention to quality issues when you are pursuing high quality and low price
If you have any questions or need any support for your packaging issues then you can JTD Pack. Our professional service will reply to you within 12 hours.
