Method for applying chemical additives to pulp during the pulp processing and products made by said method

A method for applying a chemical additive to pulp fiber, said method comprising:

• a) mixing pulp fibers with process water to form a fiber slurry;
• b) transporting said fiber slurry to a web-forming apparatus of a pulp sheet machine and forming a wet fibrous web;
• c) dewatering said wet fibrous web to a predetermined consistency thereby forming a dewatered fibrous web;
• and,
• d) applying a chemical additive to said dewatered fibrous web thereby forming a chemically treated dewatered fibrous web of chemically treated pulp fibers wherein said chemically treated pulp fibers retain from between about 10 to about 100 percent of applied amount of said chemical additive when said chemically treated pulp fibers are redispersed in water.

A method for applying a chemical additive to pulp fiber, said method comprising:

• a) creating a fiber slurry comprising process water and pulp fibers;
• b) transporting said fiber slurry to a web-forming apparatus of a pulp sheet machine and forming a wet fibrous web;
• c) dewatering said wet fibrous web to a predetermined consistency thereby forming a dewatered fibrous web;
• d) applying a first chemical additive to said dewatered fibrous web thereby forming a chemically treated dewatered fibrous web of chemically treated pulp fibers wherein said chemically treated pulp fibers retain from between about 10 to about 100 percent of applied amount of said first chemical additive when said chemically treated pulp fibers are redispersed in water;
• e) applying a second chemical additive to said chemically treated dewatered fibrous web, wherein said chemically treated dewatered fibrous web contains said chemically treated pulp fibers wherein said chemically treated pulp fibers retain from between about 10 to about 100 percent of applied amount of said second chemical additive when said chemically treated pulp fibers are redispersed in water;
• and,
• f) drying said chemically treated dewatered fibrous web to a predetermined consistency thereby forming a chemically treated dried fibrous web wherein said chemically treated pulp fibers retain from between about 10 to about 100 percent of applied amount of at least each of said first and second chemical additives when said chemically treated pulp fibers are redispersed in water.

A method for applying chemical additives to pulp fiber, said method comprising:

• a) mixing pulp fibers with process water to form a fiber slurry;
• b) transporting said fiber slurry to a web-forming apparatus of a pulp sheet machine and forming a wet fibrous web;
• c) dewatering said wet fibrous web to a predetermined consistency thereby forming a dewatered fibrous web;
• d) drying said dewatered fibrous web to a predetermined consistency thereby forming a dried fibrous web;
• and,
• e) applying a first chemical additive to said dried fibrous web and applying a second chemical additive to said dried fibrous web thereby forming a chemically treated dried fibrous web containing chemically treated pulp fibers wherein said chemically treated pulp fibers retain from between about 10 to about 100 percent of applied amount of at least each of said applied first and second chemical additives when said chemically treated pulp fibers are redispersed in water.

A method for adding at least a first chemical additive to pulp fiber, said method comprising:

• a) mixing pulp fibers with process water thereby forming a fiber slurry;
• b) transporting said fiber slurry to a web-forming apparatus of a pulp sheet machine;
• c) dewatering said fiber slurry thereby forming a crumb pulp;
• and,
• d) applying at least a first chemical additive to said crumb pulp thereby forming a chemically treated crumb pulp containing chemically treated pulp fibers;
• wherein said chemically treated pulp fibers retain from between about 10 to about 100 percent of applied amount of said chemical additive when said chemically treated pulp fibers are redispersed in water.

A method for applying chemical additives to pulp fiber, said method comprising:

• a) mixing pulp fibers with process water to form a fiber slurry;
• b) transporting said fiber slurry to a web-forming apparatus of a pulp sheet machine and forming a wet fibrous web;
• c) dewatering said wet fibrous web to a predetermined consistency thereby forming a dewatered fibrous web;
• d) applying a first chemical additive to said dried fibrous web to said dewatered fibrous web thereby forming a chemically treated dewatered fibrous web;
• e) drying said chemically treated dewatered fibrous web to a predetermined consistency thereby forming a dried fibrous web;
• and,
• f) applying a second chemical additive to said dried fibrous web thereby forming a chemically treated dried fibrous web containing chemically treated pulp fibers;
• wherein said chemically treated pulp fibers retain from between about 10 to about 100 percent of applied amount of at least each of said first and second chemical additives when said chemically treated pulp fibers are redispersed in water.