Cores for winding rolls of material with high Strain Energy of the roll, and Manufacturing method

摘要

Nuclei to produce a material that can be elastically Stretch or contract, designed to significantly reduce the amount of Energy of deformation of the roll that develops during winding.This is achieved by building within the core area of absorption of energy that can Collapse in a substantial way and in a relatively controlled during a substantial period of Time under the influence of a radial Inward pressure exercised by the continuous roll d Material and winding.The area of absorption of Energy is formed by one or more layers folding with atomic regions are moving out of the plane of the sheet and each of which defines a Plurality of normal vectors in different sub regions of the Atomic region, where the vectors Normal projected on the two-dimensional plane of the Blade,Located in a Plurality of different directions in the plane.