HIGH STRETCH PAPER AND METHOD OF PRODUCING THE SAME

A method for manufacturing an extensible paper， is herein described. The method comprises the steps of: providing pulp fibers in form of a pulp having a first length-weighted average curl index; -mechanically treating the pulp fibers using a pulp compression process to induce fiber deformations such that the resulting pulp fibers have a second length-weighted average curl index higher than the first length-weighted average curl index; - forming a wet web using the mechanically treated pulp fibers; - drying the wet web under restraint to form a dried web; and - adding a polymer to the dried web. An extensible paper is also described that comprises: - pulp fibers having a length-weighted average curl index CLw; and - a polymer in an amount of from 2 to 40 wt% based on the weight of the extensible paper; wherein the extensible paper has a Gurley air resistance below 20 s/100 mL_ and an elongation at break of at least 7%. A method for manufacturing an extensible paper， is herein described. The method comprises the steps of: providing pulp fibers in form of a pulp having a first length-weighted average curl index; -mechanically treating the pulp fibers using a pulp compression process to induce fiber deformations such that the resulting pulp fibers have a second length-weighted average curl index higher than the first length-weighted average curl index; - forming a wet web using the mechanically treated pulp fibers; - drying the wet web under restraint to form a dried web; and - adding a polymer to the dried web. An extensible paper is also described that comprises: - pulp fibers having a length-weighted average curl index C Lw; and - a polymer in an amount of from 2 to 40 wt% based on the weight of the extensible paper; wherein the extensible paper has a Gurley air resistance below 20 s/100 mL_ and an elongation at break of at least 7%.