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Strength additives for tissue products

a tissue product and additive technology, applied in the field of tissue making and papermaking, can solve the problems of high sloughing in wet weather, difficult to put on or take off clothing, etc., and achieve the effect of improving strength properties and increasing tensile strength of paper products

Inactive Publication Date: 2006-02-09
SHANNON THOMAS G +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The derivatized polyethylene oxide effectively increases the tensile strength of paper products without significantly impacting stiffness, offering improved wet and dry strength while enhancing the tactile feel and reducing friction when wet, making it a more environmentally friendly alternative to traditional epichlorohydrin resins.

Problems solved by technology

For example, clothing such as shirts and other garments are harder to put on or take off when wet or when going on over wet skin.
This increased coefficient of friction may not only be less desirable to the user but may also lead to a high level of slough when wet.

Method used

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  • Strength additives for tissue products
  • Strength additives for tissue products
  • Strength additives for tissue products

Examples

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Effect test

example

[0073] A derivatized polyethylene oxide was formed having the following formula:

[0074] The polyethylene oxide used in this example had a molecular weight of 100,000 and incorporated 6 percent by weight silanol groups.

[0075] An aqueous solution containing 1.5 percent of the above silanol functional high molecular weight polyethylene oxide was prepared by dissolving the polymer in distilled water under high shear. The solution was placed in an air pressured spraying device and sprayed on an upcreped through-air dried bath base sheet containing no chemical. The base sheet had a basis weight of 18.5 lbs. per 2,880 sq. ft. Approximately 1 gram of solution was added per 0.2 grams of basesheet. The sheet was then dried in a convection oven at 120° C. for 5 minutes.

[0076] Treated samples and untreated samples of the base sheet were tested in the machine direction and the cross machine direction on a tensile strength tester. The samples were tested in the dry state and in the wet state. ...

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Abstract

A paper product having improved strength properties as disclosed. In accordance with the present invention, the paper product is treated with a strength agent comprising a derivatized polyethylene oxide. The paper product can be, for instance, a facial tissue, a bath tissue, a paper towel or the like.

Description

BACKGROUND OF THE INVENTION [0001] In the art of tissue making and papermaking, many additives have been proposed for specific purposes, such as increasing wet strength, improving softness, or controlling wetting properties. For instance, in the past, wet strength agents have been added to paper products in order to increase the strength or otherwise control the properties of the product when contacted with water and / or when used in a wet environment. For example, wet strength agents are added to paper towels so that the paper towel can be used to wipe and scrub surfaces after being wetted without the towel disintegrating. Typical wet strength agents are also added to facial tissues to prevent the tissues from tearing when contacting fluids. In some applications, wet strength agents are also added to bath tissues to provide strength to the tissues during use. When added to bath tissues, however, the wet strength agents should not prevent the bath tissue from disintegrating when drop...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D21H23/00D21H17/53D21H21/18
CPCD21H21/18D21H17/53Y10T428/31511D21H5/2664D21H21/20
Inventor SHANNON, THOMAS G.SOERENS, DAVE ALLEN
Owner SHANNON THOMAS G
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