Processes for making improved cellulose-based materials and containers

Abstract

The present disclosure provides processes for making cellulose-based material and containers utilizing the cellulose-based material. More particularly, the present disclosure provides processes to make cellulose-based material comprising strength-enhancing preparations and processes to make improved containers with the strength-enhanced cellulose-based materials.

1 . A process for making a cellulose-based material, the process comprising the step of treating cellulosic fibers with i) a dry strength chemistry preparation and ii) a wet strength chemistry preparation in a paper-making machine to provide the cellulose-based material. 
     
     
         2 . The process of  claim 1 , wherein the cellulose-based material is capable of being recycled. 
     
     
         3 . The process of  claim 1 , wherein the dry strength chemistry preparation comprises glyoxalated polyacrylamide (GPAM). 
     
     
         4 . The process of  claim 1 , wherein the wet strength chemistry preparation comprises a polyamide resin. 
     
     
         5 . The process of  claim 1 , wherein the cellulose-based material has a basis weight and a short-span compression strength (SCT), and wherein the SCT is greater than a comparative SCT for a comparative cellulose-based material made on the paper-making machine, wherein the comparative cellulose-based material having the basis weight and lacking the dry strength chemistry preparation. 
     
     
         6 . The process of  claim 1 , wherein the cellulose-based material has a basis weight and a short-span compression strength (SCT), and wherein the dry strength chemistry preparation and the wet strength chemistry preparation provide a synergistic increase in SCT for the cellulose-based material in comparison to the comparative cellulose-based material. 
     
     
         7 . The process of  claim 1 , wherein the cellulose-based material has a basis weight and a short-span compression strength index (SCT Index), and wherein the SCT Index is greater than a comparative SCT Index for a comparative cellulose-based material made on the paper-making machine, wherein the comparative cellulose-based material having the basis weight and lacking the dry strength chemistry preparation. 
     
     
         8 . The process of  claim 1 , wherein the cellulose-based material has a basis weight and a short-span compression strength index (SCT Index), and wherein the dry strength chemistry preparation and the wet strength chemistry preparation provide a synergistic increase in SCT Index for the cellulose-based material in comparison to the comparative cellulose-based material. 
     
     
         9 . The process of  claim 1 , wherein the cellulose-based material has a basis weight and a Concora value, and wherein the Concora value is greater than a comparative Concora value for a comparative cellulose-based material made on the paper-making machine, wherein the comparative cellulose-based material having the basis weight and lacking the dry strength chemistry preparation. 
     
     
         10 . The process of  claim 1 , wherein the cellulose-based material has a basis weight and a Concora value, wherein the dry strength chemistry preparation and the wet strength chemistry preparation provide a synergistic increase in the Concora value for the cellulose-based material in comparison to the comparative cellulose-based material. 
     
     
         11 . A process for making a container, the process comprising the steps of
 treating cellulosic fibers with i) a dry strength chemistry preparation and ii) a wet strength chemistry preparation in a paper-making machine to provide a cellulose-based material   forming a container blank using the cellulose-based material, and   forming a container using the cellulose-based material.   
     
     
         12 . The process of  claim 11 , wherein the cellulose-based material is capable of being recycled. 
     
     
         13 . The process of  claim 11 , wherein the dry strength chemistry preparation comprises glyoxalated polyacrylamide (GPAM). 
     
     
         14 . The process of  claim 11 , wherein the wet strength chemistry preparation comprises a polyamide resin. 
     
     
         15 . The process of  claim 11 , wherein the process further comprises a step of treating cellulosic fibers with a sizing agent. 
     
     
         16 . The process of  claim 15 , wherein the sizing agent is selected from the group consisting of alkenyl succinic anhydride (ASA), rosin, and alkyl ketene dimer (AKD). 
     
     
         17 . The process of  claim 11 , wherein the container has a box compression strength (BCT50) measured at 50% relative humidity, and wherein the BCT50 is greater than a comparative box compression strength (CBCT50) measured at 50% relative humidity of a comparative container comprising comparative cellulose-based material made on the paper machine at the basis weight and lacking the dry strength chemistry preparation. 
     
     
         18 . The process of  claim 11 , wherein the container has a box compression strength (BCT50) measured at 50% relative humidity, and wherein the dry strength chemistry preparation and the wet strength chemistry preparation provide a synergistic increase in BCT50 for the container in comparison to the comparative container. 
     
     
         19 . The process of  claim 11 , wherein the container has a box compression strength (BCT85) measured at 85% relative humidity, and wherein the BCT85 is greater than a comparative box compression strength (CBCT85) measured at 85% relative humidity of a comparative container comprising comparative cellulose-based material made on the paper machine at the basis weight and lacking the dry strength chemistry preparation. 
     
     
         20 . The process of  claim 11 , wherein the container has a box compression strength (BCT85) measured at 85% relative humidity, and wherein the dry strength chemistry preparation and the wet strength chemistry preparation provide a synergistic increase in BCT85 for the container in comparison to the comparative container.