EP1007787B1 - Process for producing multi-layered tissue paper products - Google Patents

Process for producing multi-layered tissue paper products Download PDF

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Publication number
EP1007787B1
EP1007787B1 EP98930968A EP98930968A EP1007787B1 EP 1007787 B1 EP1007787 B1 EP 1007787B1 EP 98930968 A EP98930968 A EP 98930968A EP 98930968 A EP98930968 A EP 98930968A EP 1007787 B1 EP1007787 B1 EP 1007787B1
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EP
European Patent Office
Prior art keywords
process according
layered
weight
product
softening lotion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98930968A
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German (de)
French (fr)
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EP1007787A1 (en
Inventor
Allison Danneels
Klaus Hilbig
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Procter and Gamble Co
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Procter and Gamble Co
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Publication of EP1007787A1 publication Critical patent/EP1007787A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/22—Agents rendering paper porous, absorbent or bulky
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/02—Material of vegetable origin
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/07—Nitrogen-containing compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/53—Polyethers; Polyesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/59—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply

Definitions

  • the invention relates to a process for producing multi-layered tissue paper products, in particular paper handkerchiefs, with increased softness and to a lotion.
  • the addition of the softener solution in the wet region of the paper-making machine has drawbacks.
  • the active ingredients are distributed over the entire volume of the layered web of tissue, so a large amount of softener has to be added with respect to the quantity of paper fibre.
  • the positively charged molecules of the quaternary ammonium compound present in the solution have to neutralise the negatively charged fibres in the cellulose pulp. This leads to increased consumption of softener solution.
  • a quantity of only 0.4 kg remains in the product as active ingredient with an addition of, for example, 11 kg of active softener per tonne of paper pulp.
  • the known process therefore involves great wastage owing to the addition of the softener solution "at the wet end" of the production process.
  • a lotioned tissue paper is disclosed in WO-A-97/06307, published on 20 th February 1997. This discloses a polyol polyester emollient and an immobilizing agent to immobilize the emollient on the surface of the tissue paper web.
  • the object of the invention is to provide a process for producing multi-layered tissue paper products with increased softness, which is accompanied by more economical consumption of softener substances and to provide a lotion.
  • the softening lotion is advantageously applied, by the printing of the web of product, virtually only superficially where it imparts pleasant tactile properties to the paper product.
  • the consumption of softening lotion can be halved, for example, in relation to the prior art in that 5.5 kg per tonne of paper are applied. Owing to the printing process, this quantity is found virtually without loss on the end product.
  • Corresponding titration tests on a four-layered paper handkerchief have shown that, of this quantity, 5.3 kg per tonne of paper are found on the two outer layers whereas the softener content is only 0.1 kg per tonne of paper in the two inner layers.
  • the specified chemical composition of the softening lotion affords various advantages some of which are manifested in conjunction with the printing process.
  • a range of contents of siloxane foam suppressor which is much higher than in the state of the art is used.
  • This foam suppressor is traditionally used merely to suppress the foam formed on the product by pressure during the packaging process.
  • small proportions of the foam suppressing agent suffice.
  • the proportion of siloxane is typically 0.01% by weight there, that is about 1/10 of the proportion specified in the case of the invention. This high proportion of siloxane counteracts foaming during the printing process which stresses the product much more than the above-mentioned packaging process.
  • the softening lotion is insensitive to shearing and so-called droplet penetration is not impaired owing to the great addition of siloxane foam suppressing agent, contrary to expectations.
  • Polydimethyl siloxane which is mentioned in the state of the art for this purpose, is a preferred foam suppressing agent.
  • Intaglio cylinders which apply the softening lotion to the external sides of the multi-layered web of product are advantageously used for the printing process. Weights per unit area in the range of 0.5 to 6.0 g/m2 on each external side are to be selected for the desired softening effect.
  • Layered webs of a tissue paper are produced in a quite conventional manner on a paper-making machine to produce a multi-layered paper handkerchief. Further description is unnecessary. It should merely be noted that the weight per unit area of the layered webs is in the range of about 12 to 18 g/m2 in each case.
  • the dry web of product is finally guided through a pair of intaglio cylinders which applies a softening lotion having a weight per unit area of 1.7 g/m2 in each case to the surface of the two external sides of the web of product.
  • the softening lotion has the following chemical composition:
  • the polyethylene glycol can be obtained as a commercial product known as "PEG 4000” made by BASF, Ludwigshafen, Germany. The same product is sold by the name “PEG 4050” as a 50% solution in water. If the polyhydroxy softener is used in this form, the proportions in the chemical composition of the softening lotion according to the invention should be doubled accordingly.
  • Aloe vera powder is a highly concentrated form of aloe vera of which the concentration is about 200 times that of the liquid obtained by squeezing aloe vera leaves.
  • the above-mentioned softening lotion in fact per se possesses very good bactericidal properties. This is not only because of the pH-value, but rather in view of the nature of the active itself and the polyhydroxy compound.

Abstract

A process for producing multi-layered tissue paper products with increased softness comprises the following process steps: production of layered webs of tissue paper, assembly of the layered webs to form a multi-layered web of product which is untreated with respect to softness, and printing of the web of product in the dry state with a softening lotion having the following minimum composition in percent by weight: a quaternary ammonium compound 3 to 30 %, siloxane foam suppressor 0.1 to 3.0 %, aloe vera powder 0.1 to 10 % a polyhydroxy softener, in particular polyethylene glycol 0.05 to 5 % remainder water.

Description

The invention relates to a process for producing multi-layered tissue paper products, in particular paper handkerchiefs, with increased softness and to a lotion.
With ever-increasing requirements with respect to the quality and comfort of tissue paper products, maximum softness is becoming increasingly important, in addition to improved absorbency and tear resistance - depending on the application of the product. Softness is particularly important in the case of paper handkerchiefs as the human nose is particularly sensitive when sniffing.
It is known from the state of the art, for example EP 0 239 910 A1 or WO 93/09287 A1, to produce a soft absorbent tissue paper by adding to the cellulose fibre-containing pulp a chemical softener solution consisting, for example, of a quaternary ammonium compound such as diethylester dimethyl ammonium chloride and a polyhydroxy softener such as polyethylene glycol in a 1% solution. Other product qualities such as increased resistance to wetting, biological degradability, etc. can be achieved in addition to the improvement in softness, depending on the composition of the active ingredients of this solution.
However, the addition of the softener solution in the wet region of the paper-making machine has drawbacks. For example, the active ingredients are distributed over the entire volume of the layered web of tissue, so a large amount of softener has to be added with respect to the quantity of paper fibre. Furthermore, the positively charged molecules of the quaternary ammonium compound present in the solution have to neutralise the negatively charged fibres in the cellulose pulp. This leads to increased consumption of softener solution. Finally, a quantity of only 0.4 kg remains in the product as active ingredient with an addition of, for example, 11 kg of active softener per tonne of paper pulp. The known process therefore involves great wastage owing to the addition of the softener solution "at the wet end" of the production process.
A lotioned tissue paper is disclosed in WO-A-97/06307, published on 20th February 1997. This discloses a polyol polyester emollient and an immobilizing agent to immobilize the emollient on the surface of the tissue paper web.
On the basis of the aforementioned problems, the object of the invention is to provide a process for producing multi-layered tissue paper products with increased softness, which is accompanied by more economical consumption of softener substances and to provide a lotion.
This object is achieved by the process steps mentioned in claim 1 and by the lotion described in claim 10, namely:
  • production of layered webs of tissue paper
  • assembly of the layered webs to form a multi-layered web of product which is untreated with respect to softness, and
  • printing of the web of product in the dry state with a softening lotion comprising, in percent by weight:
    • a quaternary ammonium compound   3 to 30%
    • siloxane foam suppressor   0.1 to 3.0%
    • aloe vera powder   0.01 to 10%
    • a polyhydroxy softener, in particular polyethylene glycol   0.05 to 5%
    • remainder water
preferred quaternary ammonium compound has the formula
Figure 00020001
and mixtures thereof; wherein each R substituent is a C1-C6 alkyl or hydroxyalkyl group, or mixtures thereof, preferably R is selected from C1-C6 alkyl; R1 is
Figure 00020002
or a C13-C19 hydrocarbyl group or mixtures thereof, preferably R1 is selected from C16-C18 alkyl; R2 is a C13-C21 hydrocarbyl group, or mixtures thereof, preferably R2 is selected from C13-C17 alkyl; and X- is a compatible anion, preferably chloride or methyl sulfate. As an example, diethylester dimethyl ammonium chloride is to be cited.
The softening lotion is advantageously applied, by the printing of the web of product, virtually only superficially where it imparts pleasant tactile properties to the paper product. The consumption of softening lotion can be halved, for example, in relation to the prior art in that 5.5 kg per tonne of paper are applied. Owing to the printing process, this quantity is found virtually without loss on the end product. Corresponding titration tests on a four-layered paper handkerchief have shown that, of this quantity, 5.3 kg per tonne of paper are found on the two outer layers whereas the softener content is only 0.1 kg per tonne of paper in the two inner layers.
The specified chemical composition of the softening lotion affords various advantages some of which are manifested in conjunction with the printing process. For example, a range of contents of siloxane foam suppressor which is much higher than in the state of the art is used. This foam suppressor is traditionally used merely to suppress the foam formed on the product by pressure during the packaging process. However, as the packaging stage stresses the product relatively slightly, small proportions of the foam suppressing agent suffice. The proportion of siloxane is typically 0.01% by weight there, that is about 1/10 of the proportion specified in the case of the invention. This high proportion of siloxane counteracts foaming during the printing process which stresses the product much more than the above-mentioned packaging process.
It is also pointed out in this connection that, surprisingly, the softening lotion is insensitive to shearing and so-called droplet penetration is not impaired owing to the great addition of siloxane foam suppressing agent, contrary to expectations. This means that the absorbency and hydrophilic properties of the tissue paper product according to the invention remain virtually just as good in comparison with untreated products.
The advantages of the invention can be summarised as follows:
  • Reduced use of softening lotion
  • The softening lotion does not leave an unpleasant greasy odour.
  • The hydrophilic properties and absorbency of the tissue paper product are not impaired.
  • The softening lotion is insensitive to shearing when applied by a printing process.
  • The process uses inexpensive chemical substances.
Polydimethyl siloxane, which is mentioned in the state of the art for this purpose, is a preferred foam suppressing agent.
Owing to the acidic adjustment of the softening lotion, it is unnecessary to use preservatives in the tissue paper product. However, intaglio cylinders with a corrosion-resistant surface (for example of ceramic material) are to be used for the printing process.
By the use of a calcium chloride and a soil release agent the viscosity of the emulsion is regulated and a certain storage stability is achieved.
Intaglio cylinders which apply the softening lotion to the external sides of the multi-layered web of product are advantageously used for the printing process. Weights per unit area in the range of 0.5 to 6.0 g/m2 on each external side are to be selected for the desired softening effect.
The invention is described in detail hereinafter with reference to an example.
Layered webs of a tissue paper are produced in a quite conventional manner on a paper-making machine to produce a multi-layered paper handkerchief. Further description is unnecessary. It should merely be noted that the weight per unit area of the layered webs is in the range of about 12 to 18 g/m2 in each case.
Four such layered webs are assembled in the dry state to form a four-layered untreated web of product, the layers being connected by a stamping process of the type described, for example WO-A-95/27429, published on 19th October 1995 (EP 0 755 212 A1). The disclosure of this document is included here.
The dry web of product is finally guided through a pair of intaglio cylinders which applies a softening lotion having a weight per unit area of 1.7 g/m2 in each case to the surface of the two external sides of the web of product.
The softening lotion has the following chemical composition:
  • diethylester dimethyl ammonium chloride in the form of NN-di (tallowoyl-oxy-ethyl)-NN-dimethyl ammonium chloride with 3 percent by weight
  • a siloxane foam suppressor in the form of polydimethyl siloxane with 0.5 percent by weight
  • aloe vera powder with 8 percent by weight
  • a polyhydroxy softener in the form of polyethylene glycol with 2 percent by weight
  • hydrochloric acid with 0.02 percent by weight
  • a soil release agent with 0.5 percent by weight
  • calcium chloride with 0.2 percent by weight.
The following should be noted with regard to the compounds used:
Further details about the polydimethyl siloxane as foam suppressor and the soil release agent can be obtained from EP 0 239 910 A2 of which the disclosure is included here.
The polyethylene glycol can be obtained as a commercial product known as "PEG 4000" made by BASF, Ludwigshafen, Germany. The same product is sold by the name "PEG 4050" as a 50% solution in water. If the polyhydroxy softener is used in this form, the proportions in the chemical composition of the softening lotion according to the invention should be doubled accordingly.
Aloe vera powder is a highly concentrated form of aloe vera of which the concentration is about 200 times that of the liquid obtained by squeezing aloe vera leaves.
Furthermore, the above-mentioned softening lotion in fact per se possesses very good bactericidal properties. This is not only because of the pH-value, but rather in view of the nature of the active itself and the polyhydroxy compound.

Claims (10)

  1. Process for-producing multi-layered tissue paper products, in particular paper handkerchiefs, with increased softness, by the following process steps:
    production of layered webs of tissue paper
    assembly of the layered webs to form a multi-layered web of product which preferably is untreated with respect to softness, and
    printing of the web of product in the dry state with a softening lotion comprising, in percent by weight:
    a quaternary ammonium compound   3 to 30%
    siloxane foam suppressor   0.1 to 3.0%
    aloe vera powder   0.1 to 10%
    a polyhydroxy softener, in particular polyethylene glycol   0.05 to 5%
    remainder water.
  2. Process according to claim 1, wherein the quaternary ammonium compound has the formula
    Figure 00060001
    and mixtures thereof; wherein each R substituent is a C1-C6 alkyl or hydroxyalkyl group, or mixtures thereof, preferably R is selected from C1-C6 alkyl; R1 is
    Figure 00070001
    or a C13-C19 hydrocarbyl group or mixtures thereof, preferably R1 is selected from C16-C18 alkyl; R2 is a C13-C21 hydrocarbyl group, or mixtures thereof, preferably R2 is selected from C13-C17 alkyl; and X- is a compatible anion, preferably chloride or methyl sulfate.
  3. Process according to claim 1, wherein the quaternary ammonium compound is a diethylester dimethyl ammonium chloride.
  4. Process according to claim 1, wherein the siloxane foam suppressor is a polydimethyl siloxane.
  5. Process according to claim 1,wherein the softening lotion is adjusted so as to be acidic, in particular by addition of 0.01 to 0.5% by weight of hydrochloric acid.
  6. Process according to claim 1, wherein a soil release agent is added to the softening lotion in a proportion of 0.1 to 1.0% by weight.
  7. Process according to claim 1, wherein calcium chloride is added to the softening lotion in a proportion of 0.01 to 1.5% by weight.
  8. Process according to claim 1, wherein the softening lotion is applied to the external sides of the web of product by means of intaglio cylinders.
  9. Process according to claim 8, wherein the softening lotion is applied to each external side with a weight per unit area of 0.5 to 6.0 g/m2.
  10. Lotion in particular for use in a process according to claim 1, comprising, in percent by weight:
    a quaternary ammonium compound   3 to 30%
    siloxane foam suppressor   0.1 to 3.0%
    aloe vera powder   0.1 to 10%
    a polyhydroxy softener, in particular polyethylene glycol   0.05 to 5%
    remainder water.
EP98930968A 1997-07-30 1998-07-17 Process for producing multi-layered tissue paper products Expired - Lifetime EP1007787B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19732735A DE19732735A1 (en) 1997-07-30 1997-07-30 Process for the production of multi-layer tissue paper products
DE19732735 1997-07-30
PCT/IB1998/001092 WO1999006634A1 (en) 1997-07-30 1998-07-17 Process for producing multi-layered tissue paper products

Publications (2)

Publication Number Publication Date
EP1007787A1 EP1007787A1 (en) 2000-06-14
EP1007787B1 true EP1007787B1 (en) 2002-06-05

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EP98930968A Expired - Lifetime EP1007787B1 (en) 1997-07-30 1998-07-17 Process for producing multi-layered tissue paper products

Country Status (13)

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EP (1) EP1007787B1 (en)
JP (1) JP2001512196A (en)
KR (1) KR20010022403A (en)
CN (1) CN1268200A (en)
AT (1) ATE218650T1 (en)
AU (1) AU8123998A (en)
BR (1) BR9811719A (en)
CA (1) CA2298663A1 (en)
DE (2) DE19732735A1 (en)
DK (1) DK1007787T3 (en)
ES (1) ES2174452T3 (en)
PT (1) PT1007787E (en)
WO (1) WO1999006634A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7407560B2 (en) * 2001-02-16 2008-08-05 The Procter & Gamble Company Lotioned and embossed tissue paper
US6896766B2 (en) 2002-12-20 2005-05-24 Kimberly-Clark Worldwide, Inc. Paper wiping products treated with a hydrophobic additive
ATE457747T1 (en) * 2004-12-29 2010-03-15 Sca Hygiene Prod Ab METHOD FOR LAMINATING LAYERS OF BONDED PAPER TOWEL LAYERS
WO2007000177A1 (en) * 2005-06-29 2007-01-04 Henkel Kommanditgesellschaft Auf Aktien Process for softening hygienic paper
DE602006008922D1 (en) * 2006-07-11 2009-10-15 Procter & Gamble Multilayered tissue article with a special design of embossed depressions, and with a softening lotion
TW201734278A (en) * 2016-03-24 2017-10-01 金百利克拉克國際公司 Tissue comprising a softening composition
WO2017165358A1 (en) * 2016-03-24 2017-09-28 Kimberly-Clark Worldwide, Inc. Lotion treated through-air dried tissue

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009287A1 (en) * 1991-11-01 1993-05-13 The Procter & Gamble Company Soft absorbent tissue paper with high permanent wet strength
WO1995027429A1 (en) * 1994-04-12 1995-10-19 The Procter & Gamble Company A cellulose cloth for hygiene
US5538595A (en) * 1995-05-17 1996-07-23 The Proctor & Gamble Company Chemically softened tissue paper products containing a ploysiloxane and an ester-functional ammonium compound

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188653A (en) * 1986-04-02 1987-10-07 Procter & Gamble Biodegradable fabric softeners
US5624676A (en) * 1995-08-03 1997-04-29 The Procter & Gamble Company Lotioned tissue paper containing an emollient and a polyol polyester immobilizing agent
US5705164A (en) * 1995-08-03 1998-01-06 The Procter & Gamble Company Lotioned tissue paper containing a liquid polyol polyester emollient and an immobilizing agent

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009287A1 (en) * 1991-11-01 1993-05-13 The Procter & Gamble Company Soft absorbent tissue paper with high permanent wet strength
WO1995027429A1 (en) * 1994-04-12 1995-10-19 The Procter & Gamble Company A cellulose cloth for hygiene
US5538595A (en) * 1995-05-17 1996-07-23 The Proctor & Gamble Company Chemically softened tissue paper products containing a ploysiloxane and an ester-functional ammonium compound

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KR20010022403A (en) 2001-03-15
CA2298663A1 (en) 1999-02-11
AU8123998A (en) 1999-02-22
PT1007787E (en) 2002-09-30
ATE218650T1 (en) 2002-06-15
DE69805810T2 (en) 2003-01-02
WO1999006634A1 (en) 1999-02-11
BR9811719A (en) 2000-08-15
DK1007787T3 (en) 2002-09-23
ES2174452T3 (en) 2002-11-01
JP2001512196A (en) 2001-08-21
DE19732735A1 (en) 1999-02-04
CN1268200A (en) 2000-09-27
DE69805810D1 (en) 2002-07-11
EP1007787A1 (en) 2000-06-14

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