Processes used in the manufacture of paper products

Abstract

Surfactant penetrant treating solutions and their use in the manufacture of paper products. The surfactant penetrant treating solutions include two types. The first type is an enzymatic surfactant penetrant treating solution, and the second type is a defoaming surfactant penetrant treating solution. The solutions may be used to break down recyclable paper products for use as feedstock in paper manufacturing processes. The solutions may also be used to clean the internal and external components of machinery in a paper manufacturing line.

1 . A process for recycling paper product, comprising:
 shredding recyclable paper product;   adding an enzymatic surfactant penetrant treating solution to the shredded paper product to form a mixture including a liquid and solid constituents;   blending the mixture; and   introducing the mixture into a wet end of a paper manufacturing process.   
     
     
         2 . The process of  claim 1 , wherein the recyclable paper product comprises at least one of backing for stickers, newsprint, colored coated box paper product, coated box paper product, coated corrugated cardboard, and combinations thereof. 
     
     
         3 . The process of  claim 1 , wherein the recyclable paper product comprises at least one of a latex coating, a silicone coating and combination thereof. 
     
     
         4 . The process of  claim 1 , wherein the enzymatic surfactant penetrant treating solution comprises Silzyme®. 
     
     
         5 . The process of  claim 1 , wherein the mixture comprises about 50% to about 90% enzymatic surfactant penetrant treating solution. 
     
     
         6 . The process of  claim 3 , further comprising blending the mixture at least long enough to separate the paper fibers from the latex coating, silicone coating or combination thereof. 
     
     
         7 . The process of  claim 1  wherein the mixture has a pH from about 5 to about 8. 
     
     
         8 . The process of  claim 1  including filtering the mixture into a liquid and solid constituents and introducing the solid constituents into the wet end. 
     
     
         9 . The process of  claim 8  including adding a flocking agent to the separated liquid to remove contaminants therefrom. 
     
     
         10 . The process of  claim 8  including recycling the liquid for reuse in the process for recycling paper product. 
     
     
         11 . The process of  claim 8  including releasing the liquid directly into a wastewater treatment system. 
     
     
         12 . A process for recycling paper product, comprising:
 shredding recyclable paper product;   adding a defoaming surfactant penetrant treating solution to the shredded paper product to form a mixture including a liquid and solid constituents;   blending the mixture; and   introducing the mixture into a wet end of a paper manufacturing process.   
     
     
         13 . The process of  claim 12 , wherein the recyclable paper product comprises at least one of wax-coated cartons, box paper products, and corrugated cardboard. 
     
     
         14 . The process of  claim 12 , wherein the mixture comprises about 50% to about 90% defoaming surfactant penetrant treating solution. 
     
     
         15 . The process of  claim 12  wherein the mixture has a pH from about 5 to about 8. 
     
     
         16 . The process of  claim 12  including filtering the mixture into a liquid and solid constituents and introducing the solid constituents into the wet end. 
     
     
         17 . The process of  claim 16  including adding a flocking agent to the separated liquid to remove contaminants therefrom. 
     
     
         18 . The process of  claim 16  including recycling the liquid for reuse in the process for recycling paper. 
     
     
         19 . The process of  claim 16  including releasing the liquid directly into a wastewater treatment system. 
     
     
         20 . A process for manufacturing paper product, comprising:
 providing pulpwood;   processing the pulpwood in a standard paper manufacturing process;   adding an enzymatic surfactant penetrant liquid treating solution to the processed pulpwood to create a homogeneous mixture; and   introducing the mixture into a wet end of the standard paper manufacturing process.   
     
     
         21 . A method of treating the components of a paper manufacturing line incorporating a head box for uniformly distributing paper stock onto a paper web conveying system, the conveying system having a liquid applying system for application of liquid to the stock which allows liquid to drain, while the paper stock remains evenly distributed on the conveying system to form a web, presses for receiving the web and further removing liquid, and a white water system for capturing at least some of the drained liquid and recirculating at least some of the drained liquid to the conveying system to use in the production of the paper, the method comprising:
 while the line is idle, adding a surfactant penetrant treating solution to the white water system to create a white water mixture and circulating the mixture through the conveying system;   draining the mixture into a wastewater treatment system; and   refilling the white water system with water for continued use.   
     
     
         22 . The method of  claim 21  wherein the surfactant penetrant treating solution comprises an enzymatic agent. 
     
     
         23 . The method of  claim 21  wherein the surfactant penetrant treating solution comprises a defoaming agent. 
     
     
         24 . The method of  claim 21  wherein the pH of the surfactant penetrant treating solution is about 5 to about 8 and the head box has a liquid supply system to which the white water mixture is supplied. 
     
     
         25 . The method of  claim 21  wherein the mixture is heated to a temperature of about 120° F. to 165° F. and the heated mixture is circulated through the conveying system. 
     
     
         26 . The method of  claim 21  wherein the mixture is circulated through the conveying system for about 1 to about 3 hours. 
     
     
         27 . The method of  claim 21  wherein the components of the paper manufacturing line comprise at least one of a head box, a Fourdrinier table, a breast roll, a couch roll and a dandy roll. 
     
     
         28 . The method of  claim 21  wherein the paper stock comprises a mix of recyclable waste paper and new stock paper. 
     
     
         29 . The method of  claim 21  further comprising spraying the components of the paper manufacturing line with the surfactant penetrant treating solution prior to circulating the white water mixture through the conveying system. 
     
     
         30 . The method of  claim 29  wherein the surfactant penetrant solution is about 1% to about 6% Silzyme® concentrate. 
     
     
         31 . The method of  claim 29  wherein the surfactant penetrant solution is about 10% to about 20% Silzyme® concentrate. 
     
     
         32 . The method of  claim 31  wherein the surfactant penetrant solution is allowed to stand on the surfaces of the components for about 20 to about 30 minutes before the white water mixture is circulated through the conveying system. 
     
     
         33 . A method of preventing the formation of water insoluble particles of ingredients known as stickies in the white water system of a paper manufacturing line incorporating a paper stock preparation chamber for feeding paper stock to a head box for uniformly distributing the paper stock onto a paper web conveying system, having a liquid applying system for applying water to the stock which allows liquid to drain while pulp from the paper stock remains evenly distributed on the conveying system to form a web, presses for receiving the web and further removing liquid, and a white water system for capturing at least some of the drained liquid and recirculating at least some of the drained white water to aid in the production of the paper stock, the method comprising:
 adding an enzymatic surfactant penetrant treating solution to the white water system to formulate an enzyme containing white water mixture; and   recirculating the enzyme containing white water mixture to the fluid applying system while forming the web on the paper web conveying system.   
     
     
         34 . The method of  claim 33  wherein the enzymatic surfactant penetrant treating solution is added to formulate between about 0.05% to about 0.1% enzyme containing solution by volume within the white water mixture. 
     
     
         35 . A method of treating the components of a paper manufacturing line incorporating a paper stock preparation chamber for feeding paper stock to a head box for uniformly distributing the paper stock onto a paper web conveying system, having a liquid applying system for applying water to the stock which allows liquid to drain while pulp from the paper stock remains evenly distributed on the conveying system to form a web, presses for receiving the web and further removing liquid, and a white water system for capturing at least some of the drained liquid and recirculating at least some of the drained white water to aid in the production of the paper stock, the method comprising:
 adding an defoaming surfactant penetrant treating solution to the white water system to formulate a defoaming containing white water mixture; and   recirculating the defoaming containing white water mixture to the fluid applying system while forming the web on the paper web conveying system.   
     
     
         36 . A method of cleaning a portion of a paper manufacturing line that includes a head box for uniformly distributing paper stock onto a liquid-sprayed paper web conveying system that allows liquid to drain while paper pulp remains evenly distributed on the conveying system to form a web, a white water system for capturing at least some of the drained liquid and recirculating at least some of the drained liquid to the conveying system to aid in the production of the web, and presses for receiving the web and further removing liquid, the method comprising the steps of:
 spraying an aqueous solution to cover surfaces of a portion of the manufacturing line, the aqueous solution comprising a surfactant-penetrant-releasing agent; and   rinsing the solution from the portion of the manufacturing line where the solution was sprayed.   
     
     
         37 . The method of  claim 36  in which, in the step of spraying an aqueous solution, the solution further includes a defoaming agent. 
     
     
         38 . The method of  claim 36  in which, in the step of spraying an aqueous solution, the solution is an enzymatic solution solution. 
     
     
         39 . A method of cleaning a coater system of a paper manufacturing line incorporating a head box for uniformly distributing paper stock onto a liquid sprayed paper web conveying system, which allows liquid to drain while paper pulp remains evenly distributed on the conveying system to form a web, an enzyme containing white water system for capturing at least some of the drained liquid and recirculating at least some of the drained liquid to the conveying system to aid in the production of the web, and presses for receiving the web and further removing liquid prior to the web reaching the coater system, the method comprising:
 while the line is idle spraying an enzymatic surfactant penetrant treating solution to cover surfaces of the coater system; and   rinsing the enzymatic surfactant penetrant treating solution from the coater system.   
     
     
         40 . The method of  claim 39  wherein the enzymatic surfactant penetrant treating solution is allowed to stand on the surface of the coater system for about 20 to about 30 minutes. 
     
     
         41 . The method of  claim 39  wherein the enzymatic surfactant penetrant treating solution is rinsed form the coater system with about 800 to about 3000 psi of water. 
     
     
         42 . The method of  claim 39  wherein the enzymatic surfactant penetrant treating solution is about 10% to about 20% Silzyme® concentrate. 
     
     
         43 . A method for cleaning filters in a paper manufacturing line incorporating a head box for uniformly distributing paper stock onto a liquid sprayed paper web conveying system, which allows liquid to drain while paper pulp remains evenly distributed on the conveying system to form a web, an enzyme containing white water system for capturing at least some of the drained liquid and recirculating at least some of the drained liquid to the conveying system to aid in the production of the web, and presses for receiving the web and further removing liquid prior to said web reaching the coater system, the method comprising:
 removing the filters from the paper manufacturing line;   submerging the filters in a bath comprising a surfactant penetrant treating solution;   removing the filters from the bath; and   washing the filters with high pressure water.   
     
     
         44 . The method of  claim 43  wherein the bath is maintained at a temperature of about 120° F. 
     
     
         45 . The method of  claim 43  wherein the pressure of the high pressure water is about 800 to about 3000 psi and the temperature of the high pressure water is about 120° F. to about 165° F. 
     
     
         46 . The method of  claim 43  wherein the bath comprises about 20% of Silzyme® concentrate. 
     
     
         47 . A method of making paper in a paper manufacturing line incorporating a head box for uniformly distributing paper pulp stock onto a liquid sprayed paper web conveying system which allows liquid to drain while paper pulp stock remains evenly distributed on the conveying system to form a paper web, an enzyme containing white water system for capturing at least some of the drained liquid and recirculating at least some of the drained liquid to the conveying system to aid in the production of the paper web, the method comprising:
 adding enzymatic surfactant penetrant treating solution to the white water system.