Method of making a paper web having a high internal void volume of secondary fibers and a product made by the process
First Claim
1. A soft absorbent paper product comprising a web formed by through air drying comprising:
- fibers including at least 50% secondary fibers from a fiber furnish having at least 1% ash;
a strength modifying additive chosen from the group consisting of;
debonders and wet strength agents;
a charge modifying agent in an amount sufficient to reduce the charge on the fines fraction in said fiber by at least about 30%, said charge modifying agent being effective for enhancing the effectiveness of said strength modifying additive;
and wherein said web has a void volume of;
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Abstract
The present invention is a method of making a near-premium quality paper product having good strength and absorbency characteristics and a product made by that method. The invention is also a method for retaining a high ash content within a paper web formed by conventional wet pressing. The present invention is also a method for retaining a high percentage of softening agent within a paper web that includes such an agent. Further, the present invention is a soft absorbent paper product having a high void volume. Finally, the invention is also a method for producing a soft, absorbent, and near premium paper product having a high void volume using an undulatory crepe blade having a multiplicity of serrulations in its rake surface which presents differentiated creping angles and/or rake angles as to the paper being creped.
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Citations
22 Claims
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1. A soft absorbent paper product comprising a web formed by through air drying comprising:
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fibers including at least 50% secondary fibers from a fiber furnish having at least 1% ash;
a strength modifying additive chosen from the group consisting of;
debonders and wet strength agents;
a charge modifying agent in an amount sufficient to reduce the charge on the fines fraction in said fiber by at least about 30%, said charge modifying agent being effective for enhancing the effectiveness of said strength modifying additive;
and wherein said web has a void volume of;
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A soft absorbent paper product comprising a web formed by through air drying comprising:
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fibers comprising at least 50% secondary fibers from a furnish having at least 1% ash;
a strength modifying additive chosen from the group consisting of;
debonders and wet strength agents;
a charge modifying agent in an amount sufficient to reduce the charge on the fines fraction by at least about 30%, said charge modifying agent being effective for enhancing the effectiveness of said strength modifying additive;
and wherein said web has a GM Tensile Modulus of less than about 200 and a void volume of;
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Specification