Which is more economical, coreless roll paper or cored roll paper?

It's hard to say that different manufacturers have different paper specifications. To put it simply, when the paper thickness and softness are almost the same, the volume of the cored paper roll is calculated by π (r 2-r 2) * h, and the volume of the coreless paper roll is calculated by π r 2 * h, so it is large and cost-effective. But the coreless paper roll is smaller, saving space; The one with the core can be put on the pole and used somewhere to see which one is more in line with your needs.