How to Tell Whether Paper Core Quality Is Good or Bad?
1. Odor: the smell of the paper core adhesive directly reflects the quality of the glue. A good adhesive should be an organic adhesive with a non-pungent smell. If the paper core has a pungent smell, it means the adhesive quality is poor, which not only affects the tightness of the core but also transfers an off-odor to your products and affects how your customers evaluate them. 2.