Method of producing low density resilient webs
First Claim
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1. A method for producing an uncreped tissue web comprising the steps of:
- a) depositing an aqueous suspension of papermaking fibers onto a forming fabric to form an embryonic web;
b) noncompressively dewatering said embryonic web to a consistency of about 30 percent or greater;
c) texturing said web against a three-dimensional substrate to form a three-dimensional high bulk structure;
d) transferring said three-dimensional high bulk structure to a surface of a cylindrical dryer;
e) applying an interfacial control mixture which includes adhesive compounds and release agents to said surface of said cylindrical dryer, said interfacial control mixture adapted to adhere said three-dimensional high bulk structure to said surface of said cylindrical dryer without fluttering and permitting detachment of said three-dimensional high bulk structure without significant damage;
f) drying said three-dimensional high bulk structure on said cylindrical dryer; and
g) detaching said three-dimensional high bulk structure from said surface of said cylindrical dryer without creping.
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Abstract
A method of using a conventional wet-pressed creped tissue machine produces a textured tissue sheet that is dried on a conventional cylindrical drum dryer to create an uncreped product with throughdried-like properties. Machine modifications and a proper balance of adhesive compounds and release agents permit a textured sheet to be dried on a Yankee drier and then pulled off without use of a crepe blade.
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Citations
41 Claims
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1. A method for producing an uncreped tissue web comprising the steps of:
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a) depositing an aqueous suspension of papermaking fibers onto a forming fabric to form an embryonic web;
b) noncompressively dewatering said embryonic web to a consistency of about 30 percent or greater;
c) texturing said web against a three-dimensional substrate to form a three-dimensional high bulk structure;
d) transferring said three-dimensional high bulk structure to a surface of a cylindrical dryer;
e) applying an interfacial control mixture which includes adhesive compounds and release agents to said surface of said cylindrical dryer, said interfacial control mixture adapted to adhere said three-dimensional high bulk structure to said surface of said cylindrical dryer without fluttering and permitting detachment of said three-dimensional high bulk structure without significant damage;
f) drying said three-dimensional high bulk structure on said cylindrical dryer; and
g) detaching said three-dimensional high bulk structure from said surface of said cylindrical dryer without creping. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 39, 40, 41)
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26. A method for producing an uncreped tissue web at industrially useful speeds, said method comprising the steps of:
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a) depositing an aqueous suspension of papermaking fibers onto a forming fabric to form an embryonic web;
b) noncompressively dewatering said embryonic web to a consistency of about 30 percent or greater;
c) texturing said embryonic web to form a three-dimensional high bulk structure and transferring said three-dimensional high bulk structure to a first transfer fabric;
d) transferring said three-dimensional high bulk structure to a second transfer fabric;
e) transferring said three-dimensional high bulk structure to a surface of a cylindrical dryer;
f) applying an effective amount of an interfacial control mixture which includes adhesive compounds and release agents, said interfacial control mixture adapted to adhere said three-dimensional high bulk structure to said surface of said cylindrical dryer without fluttering and permitting detachment of said three-dimensional high bulk structure without significant damage;
g) drying said three-dimensional high bulk structure on said surface of said cylindrical dryer; and
h) detaching said three-dimensional high bulk structure from said surface of said cylindrical dryer without creping. - View Dependent Claims (27, 28, 29, 30)
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31. A method for producing an uncreped tissue web comprising the steps of:
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a) depositing an aqueous suspension of papermaking fibers onto a forming fabric to form an embryonic web;
b) noncompressively dewatering said embryonic web to a consistency of about 30 percent or greater;
c) texturing said web against a three-dimensional textured substrate to form a three-dimensional high bulk structure;
d) transferring said three-dimensional high bulk structure to a surface of a cylindrical dryer at a consistency of from between about 30 to about 45 percent using said textured substrate;
e) applying an interfacial control mixture which includes adhesive compounds and release agents, said adhesive compounds being water soluble and substantially free of crosslinking adhesive agents, said interfacial control mixture adapted to adhere said three-dimensional high bulk structure to said surface of said cylindrical dryer without fluttering and permitting detachment of said three-dimensional high bulk structure without significant damage;
f) drying said three-dimensional high bulk structure on said surface of said cylindrical dryer; and
g) detaching said three-dimensional high bulk structure from said surface of said cylindrical dryer without creping. - View Dependent Claims (32, 33, 34)
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35. A method for producing an uncreped tissue web comprising the steps of:
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a) depositing an aqueous suspension of papermaking fibers onto a forming fabric to form an embryonic web;
b) noncompressively dewatering said embryonic web;
c) texturing said web against a three-dimensional textured substrate to form a three-dimensional high bulk structure;
d) transferring said three-dimensional high bulk structure to a surface of a cylindrical dryer;
e) applying an interfacial control mixture which includes adhesive compounds and release agents, said interfacial control mixture adapted to adhere said three-dimensional high bulk structure to said surface of said cylindrical dryer without fluttering;
f) drying said three-dimensional high bulk structure on said surface of said cylindrical dryer;
g) detaching said three-dimensional high bulk structure from said surface of said cylindrical dryer using a creping blade;
h) adjusting said interfacial control mixture such that said interfacial control mixture is adapted to adhere said three-dimensional high bulk structure to said surface of said cylindrical dryer without fluttering and permitting detachment of said three-dimensional high bulk structure without significant damage; and
i) detaching said three-dimensional high bulk structure from said surface of said cylindrical dryer without creping. - View Dependent Claims (36, 37, 38)
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Specification