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Soft tissue paper containing fine particulate fillers

A particle filler, tissue paper technology, applied in the field of tissue paper products, can solve problems such as reducing softness

Inactive Publication Date: 2000-02-16
INSTITUTE OF PAPER SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The second major limitation is the general inability of the particulate filler to bond to the papermaking fibers in the same way that the individual papermaking fibers bond to each other when the formed web is dried.
Strength limitation reduces softness

Method used

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  • Soft tissue paper containing fine particulate fillers
  • Soft tissue paper containing fine particulate fillers
  • Soft tissue paper containing fine particulate fillers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0280] This comparative example is a comparative example illustrating a reference method that does not incorporate the features of the present invention. This method is illustrated in the following steps:

[0281] An aqueous slurry of about 3% by weight eucalyptus fibers was made using a customary pulper. Cypro 514 was added at a rate of 0.02% dry weight relative to the final dry weight of the creped tissue  into the slurry. This treated slurry is then sent to the paper machine through the feed pipe.

[0282] The particulate filler was grade WWFil Slurry manufactured by Dry Branch Kaolin of Dry Branch, GA  kaolin clay. It is delivered as a 70% solids slurry through the feed pipe with an anionic flocculant - Accurac 62 - delivered as a 0.3% aqueous dispersion  mixed. Accurac 62  It is delivered at a rate corresponding to about 0.015% of the dry weight of the flocculant to the finished dry weight of the creped tissue paper produced. The flocculant adsorption capacity...

Embodiment 2

[0300] This example illustrates one embodiment of the invention for making filled tissue paper.

[0301] An aqueous slurry of about 3% by weight eucalyptus fibers was prepared using a conventional pulper. Add Cypro 514 at a dry weight ratio of 0.02% relative to the final dry weight of the creped tissue  into the slurry. This treated slurry is then fed to the paper machine through the stock pipe.

[0302] The particulate filler was kaolin clay grade WWFil Slurry(R) manufactured by Dry Branch Kaolin of Dry Branch, GA. It is conveyed through the raw material pipe as a slurry with a solid content of 70%, and in the raw material pipe with an anionic flocculant—Accurac 62 conveyed as a 0.3% aqueous dispersion  mixed. Accurac62  It is delivered at a rate corresponding to about 0.05% of the dry weight of the flocculant to the finished dry weight of the creped tissue paper produced. The flocculant adsorption capacity is increased by passing the mixture through an in-line mixer...

Embodiment 3

[0320] This example illustrates one embodiment of the invention for making filled tissue paper.

[0321] An aqueous slurry of about 3% by weight eucalyptus fibers was prepared using a conventional pulper. Add Cypro 514 at a rate of 0.02% dry weight relative to the final dry weight of the creped tissue paper  into the slurry. The treated slurry is then split into two streams so that the stream which ultimately forms the fabric side surface layer contains twice the amount of material as the stream which ultimately forms the opposite side surface layer. The eucalyptus stream is fed to the paper machine.

[0322] The particulate filler was kaolin clay grade WWFil Slurry(R) manufactured by Dry Branch Kaolin of Dry Branch, GA. It is delivered as a 70% solids slurry through the feed pipe where it is mixed with an anionic flocculant - Accurac 62 - delivered as a 0.3% aqueous dispersion  mixed. Accurac 62  It is delivered at a rate corresponding to about 0.5% of the dry weight...

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Abstract

Soft, strong, and low dusting tissue paper webs useful in the manufacture of soft, absorbent sanitary products such as bath tissue, facial tissue, and absorbent towels are disclosed. The tissue papers copmrise fibers such as wood pulp and a non-cellulosic, water insoluble particulate filler such as kaolin clay and possess biased surface properties.

Description

technical field [0001] The present invention generally relates to tissue paper products and methods of manufacture. More particularly, the present invention relates to tissue paper products made from cellulosic pulp and non-cellulosic water-insoluble particulate fillers. Background of the invention [0002] Hygienic tissue paper products are widely used. Such articles are commercially provided in forms suitable for various applications such as facial tissue, toilet tissue and absorbent tissue. The specifications of these articles, ie, basis weight, thickness, strength, sheet size, furnish medium, etc., are often very different. They are related by a common production method, the so-called creping papermaking process. However, it is also possible to produce such products without creping. Tissue paper webs produced by these processes are within the scope of the present invention. [0003] Creping is a way of mechanically compressing paper in the machine direction. The re...

Claims

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Application Information

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IPC IPC(8): D21H17/67D21H17/68D21H27/00D21H27/38D21H27/40
CPCD21H27/40D21H17/68D21H27/38D21H17/67
Inventor 肯尼思·D·文森乔纳森·A·菲克巴特·S·赫斯科
Owner INSTITUTE OF PAPER SCIENCE AND TECHNOLOGY
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