EP0742858A1 - Method for manufacturing paper in a foam medium using a non-ionic surfactant - Google Patents
Method for manufacturing paper in a foam medium using a non-ionic surfactantInfo
- Publication number
- EP0742858A1 EP0742858A1 EP95908293A EP95908293A EP0742858A1 EP 0742858 A1 EP0742858 A1 EP 0742858A1 EP 95908293 A EP95908293 A EP 95908293A EP 95908293 A EP95908293 A EP 95908293A EP 0742858 A1 EP0742858 A1 EP 0742858A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- surfactant
- paper
- foam
- witconol
- carbon atoms
- 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.)
- Granted
Links
Classifications
-
- 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
- D21F11/002—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines by using a foamed suspension
-
- 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
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- 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
- D21H21/24—Surfactants
Definitions
- the subject of the invention is a method of manufacturing a sheet of paper or nonwoven in a foam medium.
- the invention finds application in the paper industry for the manufacture of paper or nonwoven, for domestic, household or sanitary use.
- the desired properties of the paper or nonwoven sheet are softness, wet or dry resistance, bulk, absorbency, etc. A balance between these different properties is sought.
- foam-based process means a process for the manufacture of paper or nonwovens by the wet method where the water is replaced by an aqueous solution comprising a surfactant forming a foam.
- a process for manufacturing paper in a foam medium is described in European patent application No. 0 481 746 in the name of JAMES RIVER CORPORATION OF VIRGINIA.
- This process consists in preparing a manufacturing composition in the form of a foaming dispersion of fibers by mixing a suspension of fibers in water with a foaming liquid comprising a surfactant, forming a fibrous web on a paper machine, recovering the foaming liquid, recycling part of the foaming liquid for the preparation of the manufacturing composition and treating another part of the foaming liquid recovered by separating the surfactant from the liquid.
- anionic, cationic and nonionic surfactants suitable for the formation of a fibrous web and certain amphoteric surfactants.
- U.S. Patents 3,716,449 and 3,871,952 describe anionic, cationic and nonionic surfactants.
- Cationic type surfactants such as lauramine oxide were not retained because they were adsorbed on the anionic sites present in the paper pulp used for the manufacture of paper for household use.
- an agent has been retained and selected, having the best industrial performance, that is to say having a good foam generating power, a good gas (air) content. : about 60% by volume for the foam formed from this agent, and a good recovery rate of the surfactant in the foam, while being a compound having no toxicity. It is a compound of the ⁇ -olefin-sulfonate or AOS type.
- the other known agents of non-ionic type did not provide as good results as the anionic agent mentioned above with regard to the process (recovery rate, enrichment in surfactant, etc.).
- anionic ⁇ -olefin-sulfonate compounds in the processes of the prior art, however, has major drawbacks when the incorporation of cationic additives is necessary to improve certain properties of the paper such as softness, breaking strength. by wet or dry traction. Indeed, the problem which arises when a cationic agent is added during a foam medium process using an anionic surfactant, in this case OSA, the anionic compound and the cationic compound react chemically. with each other and thus lose their effectiveness. This results for the added cationic agent, by a loss of its effectiveness, and for the surfactant, by a reduction in the gas content of the foam formed, which leads to the addition of significant additional quantities of 'AOS in the foaming liquid.
- an anionic surfactant in this case OSA
- the present invention aims to overcome all of the aforementioned drawbacks encountered when using as surfactant, OSA, while retaining the advantageous performance of the same agent both in terms of the implementation of the method that advantageous mechanical and other properties observed on the product resulting from this process.
- Another object of the present invention is to be able to use cationic additives without chemical incompatibility with the surfactant, that is to say that does not react with the latter.
- the object of the present invention is to provide a process which offers better results with regard to the consumption of surfactant and with regard to the recovery of the surfactant during recycling, compared to the processes in foam medium of the prior art.
- the object of the present invention is to provide a process which, in the presence of cationic additives, improves the smoothness and other properties of the sheet of paper obtained by this process, in particular the tensile strength in the state dry or wet and the rate of water absorption.
- the subject of the invention is a method of manufacturing a sheet of paper or nonwoven in a foam medium, the essential characteristic of which is to use as a surfactant to form the foam, a nonionic compound, of the alcohol type.
- R is a linear or branched alkyl group having 6 to 20 carbon atoms or else R has the formula R'-X where X is an aromatic ring and R 'is a linear or branched alkyl group having from 2 to 16 carbon atoms .
- n varies in the range from 4 to 20 and R is a linear alkyl group of 8 to 16 carbon atoms.
- the method comprises the incorporation of cationic additives for the production of paper such as softening agents, agents improving the resistance to breaking in traction in the dry state, agents improving tensile strength in the wet state, and / or disintegrants.
- cationic additives for the production of paper such as softening agents, agents improving the resistance to breaking in traction in the dry state, agents improving tensile strength in the wet state, and / or disintegrants.
- Figure 1 schematically shows a device for the implementation of the method according to the invention according to one embodiment, using Figure 1 simplified from European patent application No. 0.481.746;
- FIG. 6 is a schematic diagram illustrating a variant of the paper manufacturing process, described in US Patent No. 5,200,035.
- dry strength and “wet strength” will be used respectively for the tensile strength in the dry state and in the wet state.
- the nonionic surfactant used in the invention is an ethoxylated alcohol corresponding to the general formula (I) below:
- This compound results from the condensation of ethylene oxide and an alcohol, a phenol or another molecule with labile hydrogen. These compounds are also called “polyethylene glycol ethers”. Surfactants belonging to this family of products have been tested and described to illustrate the invention.
- One of the preferred agents is the product sold under the brand
- This agent has the formula (I) in which n varies in the range from 4 to 20 and R is a linear alkyl group of 8 to 16 carbon atoms.
- the identification of the ethoxylated group of this compound was established by mass spectrometry of FAB type.
- the spectrum obtained clearly shows that the ethoxylation interval varies from 4 to 20 ethoxy groups with a peak around 8 to 9 groups.
- the distribution of the alkyl chains of this compound is measured by liquid chromatography. This distribution is not Gaussian. This technique makes it possible to show that the compound WITCONOL SN-120 has the particularity of not having an alkyl chain in C6 and C8 which are more irritating. In fact, the compounds comprising these C6 and C8 alkyl chains were found to be irritants when tested on rabbit eyes.
- the distribution of the alkyl chains is as follows:
- WITCONOL SN-120 is at least twice as high as for the AOS. In addition, this agent has received American and European authorization to be used in the manufacture of paper intended for food contact such as paper towels. WITCONOL (R) SN-120 is preferably used in the form of a mixture of 20% water and 80% of the compound in pure form, to be liquid at temperature
- nonionic surfactant belonging to the family defined above is the component sold under the brand WITCONOL (R) NP-130, by WITCO CORPORATION, Houston, Texas, United States.
- CH 3 Another non-ionic surfactant which can be used in the present invention is the product sold under the brand DESONIC 12-8.
- This compound marketed by WITCO CORPORATION is also an ethoxylated alcohol. It differs from WITCONOL (R) SN-120 only in the distribution of carbon chains along their length. Indeed, for this compound, the most important proportion is the chain C ⁇ 2 - 'about 90% while for WITCONOL (R)
- the cationic additives used in the present invention are softening agents, agents improving wet or dry resistance, or agents improving mechanical properties.
- (R) additive is sold under the brand BEROCELL 595 and is used as a softening agent in the manufacture of paper.
- the term “BEROL” will be used in the following text for "BEROCELL®”.
- the agents improving wet or dry resistance are cationic additives, and more specifically polycationic additives.
- cationic additives marketed under the brand name KYMENE (R) 557 H, is commonly used in the manufacture of paper as an agent increasing the wet strength properties of the paper sheet.
- a cationic agent improving the dry resistance is illustrated in the following text by a cationic quaternary starch ether sold under the brand SOLVITOSE® N.
- nonionic surfactants according to formula (I) exhibited at least as good foaming properties as the surfactant ⁇ -olefin sulfonate (AOS) and made it possible to produce paper sheets having mechanical properties at least as good as those manufactured with AOS.
- WITCONOL SN-120 is used as surfactant to carry out the method according to the invention, and the formulas obtained by this method are compared with control formulas obtained by a process in foam medium using AOS and with other control formulas obtained by a conventional process in water medium.
- cationic additives such as BEROL
- SOLvTTOSE N another equally cationic agent
- a paper composition consisting of a 50/50 mixture of a disintegrated eucalyptus pulp and a refined softwood pulp in a Valley pile for 30 minutes.
- the latter component is added in a proportion of 2 kg / tonne of dry paste. After a contact time of approximately 15 minutes of this component with the paper mixture, the whole is diluted in order to reach a concentration of the order of 5 g / 1.
- SOLVITOSE® N SOLVTTOSE, in the table below
- a foam is prepared using in the process according to the invention, WITCONOL® SN-120 (SN-120 in the table below) at a concentration of 200 ppm (the component is 100% active) and in the control process, the OSA at a concentration of 200 ppm (the AOS component being only active at 40%).
- the foam is formed using a continuous foamer of the ERNST BENZ type. A mixture of water and surfactant at a concentration of 200 mg / 1 is introduced into the device. The foam obtained has an air content of 60% by volume.
- the paste is mixed at a concentration of 5 g / 1 for a short time: 1 to 2 seconds with two liters of foam, in a blender. Then the paper mixture comprising the foam is used to make the form according to standard NF Q50-002 on a former of the FRANK type.
- the measurements are carried out on the formulas after a conditioning period of at least 48 hours at 23 ° C. and at an ambient humidity of 50%.
- the grammage, the thickness, the bulk of each form, as well as the tensile strength in the dry state, are measured, which makes it possible to determine the breaking force, the elongation and the breaking length.
- WITCONOL (R) SN-120 are at least as good as those of the formulas obtained using the AOS.
- BEROL softening or debonding additive
- the sheet of paper obtained by this process has in particular another advantageous property: softness.
- This embodiment of the invention is not limiting and any other implementation of a process for making paper in a foam medium can be envisaged.
- the paper machine 10 corresponds to a machine of the "crescent former" type described in US Pat. No. 3,326,745.
- the wet part forming the sheet comprises a felt 11 permeable to liquid and a cloth 12, of the type used in the manufacture of nonwoven.
- the fabric 12 is supported by rollers 18 and 19 which are positioned with the head roller 15 so as to converge the fabric 12 on the felt 11 at the head roller at an angle precise with respect to the felt 11.
- the felt 1 1 and the fabric 12 move in the same direction, at the same speed and in the direction of rotation of the head roller 15.
- the fabric 12 and the felt 11 converge on the upper surface of the head roller 15 to form a spacer inside which a jet of foaming dispersion of fibers from the head box is sprayed.
- multijet system (bi- or trijet) can also be provided for the production of a laminated product.
- the fabric 12 is stretched so as to pass over the felt 11 on the surface of the head roller 15, the foaming dispersion of fibers is pressed between the fabric 12 and the felt 11 forcing the liquid to pass through the fabric 12 in Bacholle 22 where the foaming liquid is collected.
- the sheet formed in the process is transported by the felt 11 to a suction press 16 where it is transferred to the cylinder 26 of a drying cylinder.
- the tablecloth forming the paper is dried, then creped by the doctor blade 27.
- the paper is collected on the receiving cylinder roller 28. Part of the surfactant used to prepare the foaming liquid remains in the manufactured paper.
- the foaming liquid an aqueous solution comprising the surfactant
- the silo 30 is supplied with water via line 31.
- the concentration of surfactant in the foaming liquid at the headbox is preferably in the range of about 100 to about 350 parts per million by weight.
- the paper pulp from tank 36 is fed through line 33 with the foaming liquid in the headbox 20 by means of a positive displacement pump 32.
- the foam is formed when the manufacturing composition from the headbox is projected between the fabric 12 and the felt 11 on the upper face of the head roller 15.
- the pressure of the fabric 12 on the felt 11 and the force of the sprayed liquid cause the foaming liquid to flow through the fabric 12 in the Bacholle 22.
- the forces produced by the approximation of the fabric 12 on the felt 11, the linear speed and the force of the jet on the fabric 12 produce compression and shear forces on the liquid sufficient to cause the transport of air in the fabric and its interstices thus generating the foam containing 55 to 75% by volume of air.
- the foaming liquid recovered in the Bacholle 22 is reintroduced via line 28 into the silo 30 containing the foaming liquid. And the excess liquid foam recovered in the Bacholle 22, is brought into a liquid separation unit 45 via the line 42.
- the decantation carried out in the separation unit 45 leads to the recovery of a foam phase enriched in surfactant which is separated and recovered by line 47, from the foaming liquid introduced into the liquid separation unit 45.
- a liquid phase depleted in surfactant is then separated from the foam phase enriched in surfactant and is recovered by driving 56.
- the foam phase enriched in surfactant, broken in the unit 48 is then recycled into the silo 30 for the preparation of the manufacturing composition.
- the liquid phase depleted in surfactant at the outlet of the liquid separation unit 45 is brought via the pipe. 56 to a surfactant recovery unit
- Foaming liquid is also recovered during the draining which takes place during the manufacture of the fibrous web, at the suction press 16 or else the suction box 84, by means of a collector 82. This foaming liquid is then supplied to the surfactant recovery unit 55 by means of the line 86 which joins the line 56 for supplying foaming liquid already depleted in surfactant, coming from the liquid separation unit 45.
- the unit 55 comprises specific means 60 for introducing gas or air in order to generate foam from the foaming liquid introduced into this separation unit 55.
- the foam formed is recovered by line 64 and is broken in unit 65, then the surfactant is recycled into the silo 30 by line 51.
- the resulting liquid which is even more depleted of surfactant, is recovered in line 68 and can be treated again by another recovery unit 69 for surfactant, connected in series with the first unit. Two to six recovery units can be connected in series.
- the machine has a "crescent former" configuration.
- a surfactant recovery unit has been used.
- the foaming liquid recovered during the draining of the felt is sent to the surfactant recovery unit.
- WITCONOL (R) SN-120 is used for these tests as a nonionic surfactant for the process according to the invention, and for comparison, the process in water medium, and the process in foam medium using AOS. .
- the WITCONOL® SN-120 concentration in the headbox is around 225 ppm.
- the foam obtained from WITCONOL SN-120 has an identical appearance to that obtained from AOS, from a visual examination of the size of the bubbles.
- WITCONOL (R) SN-120 in the process according to the invention compared to AOS. This is illustrated by the curve shown in Figure 3 where the strength of the breaking strength of the sheet in the dry state is a function of the amount of KYMENE (R) 557 H added per tonne of dough.
- the curves in FIG. 4 represent the strength of wet resistance as a function of the amount of KYMENE ( ⁇ R) 557 H added per tonne of paste, for different surfactants.
- KYMENE (R) 557 H does not of course provide any gain in wet strength in the process using AOS.
- the initial absorption rate in water was also compared, in the presence of 6 kg of KYMENE (R) 557 H per tonne of pulp. As shown by the curves in FIG. 5 which represent the initial speed of water absorption as a function of an average tensile force for a sheet formed of 2 plies, the initial speed of water absorption is 25% higher for the sheet prepared from WITCONOL SN-120 as for the sheet prepared according to the process in water medium.
- the method according to the invention can be implemented according to another embodiment which is a variant of that applied to the pilot apparatus, which has been described previously.
- This second embodiment is illustrated by the diagram shown in FIG. 6 and is described in detail in American patent No. 5,200,035. It differs from the first embodiment by the steps of preparation of the manufacturing composition introduced into the headbox.
- the paper pulp from the pulp castle 100 diluted in an aqueous solution is introduced into a press 101.
- the latter concentrates the paper mixture by removing water.
- the concentrated mixture then passes through a needle shredder 102.
- the foaming liquid coming from the silo 103 is also fed into the shredder 102.
- a foaming dispersion of fibers is thus formed and conducted in a positive displacement pump 104, then in the box of head 105.
- This process eliminates the step of processing the excess liquid recovered in the Bacholle, and therefore makes it possible to eliminate the separation unit.
- Another consequence of this device for carrying out the process in a foam medium is the reduction in the size of the recovery unit. In fact, in the first embodiment described above, generally six recovery units are connected in series. However, according to this second embodiment, three foam recovery units are sufficient.
- the process according to the invention has been implemented on an industrial scale according to this second embodiment. Some manufacturing parameters were measured: consumption of surfactant, recovery of this agent, etc., and advantageous results were observed. Tests have been carried out using WITCONOL (R) as surfactant
- SN-120D to maintain the air content in the desired range, is lower than the consumption of OSA.
- the water recovered at the outlet of the recovery units has a concentration of non-ionic surfactant of formula (I) such as WITCONOL () SN-120D, which is lower, at most equal to approximately 3 ppm and can be then rejected or reused, no longer having a foaming character. This characteristic is important with regard to environmental legislation.
- the concentration of residual surfactant in the paper sheet for WITCONOL SN-120D decreases by 65% compared to that of products made from OSA.
- the fixed quantity of this component in the sheet in the case of the foam medium process according to the invention is completely identical to that fixed in a sheet obtained according to the process in water. It was also noted that the substitution of AOS by WITCONOL (R)
- the softness property is assessed by a physical measurement test and in parallel by a panel.
- the sheet obtained by the process has an even higher softness which can exceed 100 for the mother coils and the processed product.
Landscapes
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9401085 | 1994-02-01 | ||
FR9401085A FR2715671B1 (en) | 1994-02-01 | 1994-02-01 | Method of manufacturing a sheet of paper or nonwoven in a foam medium, using a nonionic surfactant. |
PCT/FR1995/000118 WO1995021299A1 (en) | 1994-02-01 | 1995-02-01 | Method for manufacturing paper in a foam medium using a non-ionic surfactant |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0742858A1 true EP0742858A1 (en) | 1996-11-20 |
EP0742858B1 EP0742858B1 (en) | 1999-06-09 |
Family
ID=9459625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95908293A Expired - Lifetime EP0742858B1 (en) | 1994-02-01 | 1995-02-01 | Method for manufacturing paper or a non-woven web in a foam medium using a non-ionic surfactant |
Country Status (5)
Country | Link |
---|---|
US (1) | US6103060A (en) |
EP (1) | EP0742858B1 (en) |
ES (1) | ES2133733T3 (en) |
FR (1) | FR2715671B1 (en) |
WO (1) | WO1995021299A1 (en) |
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FI107951B (en) * | 1999-12-08 | 2001-10-31 | Dynea Chemicals Oy | Foaming compositions which affect the strength of a fiber material |
JP3950400B2 (en) * | 2001-10-24 | 2007-08-01 | 河野製紙株式会社 | Fiber web product and method for producing the same |
US6821385B2 (en) | 2001-11-02 | 2004-11-23 | Kimberly-Clark Worldwide, Inc. | Method of manufacture of tissue products having visually discernable background texture regions bordered by curvilinear decorative elements using fabrics comprising nonwoven elements |
US6787000B2 (en) | 2001-11-02 | 2004-09-07 | Kimberly-Clark Worldwide, Inc. | Fabric comprising nonwoven elements for use in the manufacture of tissue products having visually discernable background texture regions bordered by curvilinear decorative elements and method thereof |
US6746570B2 (en) | 2001-11-02 | 2004-06-08 | Kimberly-Clark Worldwide, Inc. | Absorbent tissue products having visually discernable background texture |
US6790314B2 (en) | 2001-11-02 | 2004-09-14 | Kimberly-Clark Worldwide, Inc. | Fabric for use in the manufacture of tissue products having visually discernable background texture regions bordered by curvilinear decorative elements and method thereof |
US6749719B2 (en) | 2001-11-02 | 2004-06-15 | Kimberly-Clark Worldwide, Inc. | Method of manufacture tissue products having visually discernable background texture regions bordered by curvilinear decorative elements |
US6837956B2 (en) * | 2001-11-30 | 2005-01-04 | Kimberly-Clark Worldwide, Inc. | System for aperturing and coaperturing webs and web assemblies |
US6824650B2 (en) * | 2001-12-18 | 2004-11-30 | Kimberly-Clark Worldwide, Inc. | Fibrous materials treated with a polyvinylamine polymer |
US7214633B2 (en) * | 2001-12-18 | 2007-05-08 | Kimberly-Clark Worldwide, Inc. | Polyvinylamine treatments to improve dyeing of cellulosic materials |
US7799968B2 (en) | 2001-12-21 | 2010-09-21 | Kimberly-Clark Worldwide, Inc. | Sponge-like pad comprising paper layers and method of manufacture |
US20030157856A1 (en) * | 2002-01-14 | 2003-08-21 | Schroeder Gary L. | Moist wipe and method of making same |
US20040084162A1 (en) | 2002-11-06 | 2004-05-06 | Shannon Thomas Gerard | Low slough tissue products and method for making same |
US6951598B2 (en) * | 2002-11-06 | 2005-10-04 | Kimberly-Clark Worldwide, Inc. | Hydrophobically modified cationic acrylate copolymer/polysiloxane blends and use in tissue |
US20040115451A1 (en) * | 2002-12-09 | 2004-06-17 | Kimberly-Clark Worldwide, Inc. | Yellowing prevention of cellulose-based consumer products |
US20040110017A1 (en) * | 2002-12-09 | 2004-06-10 | Lonsky Werner Franz Wilhelm | Yellowing prevention of cellulose-based consumer products |
US7994079B2 (en) | 2002-12-17 | 2011-08-09 | Kimberly-Clark Worldwide, Inc. | Meltblown scrubbing product |
US6875315B2 (en) * | 2002-12-19 | 2005-04-05 | Kimberly-Clark Worldwide, Inc. | Non-woven through air dryer and transfer fabrics for tissue making |
US20040121680A1 (en) * | 2002-12-23 | 2004-06-24 | Kimberly-Clark Worldwide, Inc. | Compositions and methods for treating lofty nonwoven substrates |
FI124235B (en) | 2012-04-26 | 2014-05-15 | Stora Enso Oyj | Fiber-based paper or paperboard web and a process for its manufacture |
FI124556B (en) | 2012-04-26 | 2014-10-15 | Stora Enso Oyj | Hydrophobic-bonded fiber web and process for manufacturing a bonded web layer |
US10669675B2 (en) | 2015-10-16 | 2020-06-02 | General Mills, Inc. | Paperboard product |
US11591755B2 (en) | 2015-11-03 | 2023-02-28 | Kimberly-Clark Worldwide, Inc. | Paper tissue with high bulk and low lint |
US10519607B2 (en) | 2016-05-23 | 2019-12-31 | Gpcp Ip Holdings Llc | Dissolved air de-bonding of a tissue sheet |
SE540719C2 (en) * | 2016-07-11 | 2018-10-23 | Stora Enso Oyj | Process for creating foam from an antimicrobial starch in a process for making a paper or board product |
SE541735C2 (en) | 2016-07-11 | 2019-12-03 | Stora Enso Oyj | Method of manufacturing an oriented strand board product using a lignin-based phenolic resin |
RU2705616C1 (en) | 2016-09-01 | 2019-11-11 | Эссити Хайджин Энд Хелт Актиеболаг | Method of producing nonwoven material |
CA3034508C (en) * | 2016-09-01 | 2022-03-29 | Essity Hygiene And Health Aktiebolag | Process and apparatus for wetlaying nonwovens |
BR112019010678B1 (en) | 2016-12-22 | 2023-01-17 | Kimberly-Clark Worldwide, Inc | PROCESS FOR PRODUCING A TISSUE PAPER PRODUCT |
GB2582508B (en) | 2017-11-29 | 2022-02-16 | Kimberly Clark Co | Fibrous sheet with improved properties |
AU2018433810A1 (en) | 2018-07-25 | 2021-02-04 | Kimberly-Clark Worldwide, Inc. | Process for making three-dimensional foam-laid nonwovens |
KR20220114655A (en) | 2019-12-31 | 2022-08-17 | 킴벌리-클라크 월드와이드, 인크. | Foam-based manufacturing systems and processes |
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1994
- 1994-02-01 FR FR9401085A patent/FR2715671B1/en not_active Expired - Fee Related
-
1995
- 1995-02-01 ES ES95908293T patent/ES2133733T3/en not_active Expired - Lifetime
- 1995-02-01 EP EP95908293A patent/EP0742858B1/en not_active Expired - Lifetime
- 1995-02-01 US US08/682,722 patent/US6103060A/en not_active Expired - Lifetime
- 1995-02-01 WO PCT/FR1995/000118 patent/WO1995021299A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
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See references of WO9521299A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2715671B1 (en) | 1996-03-15 |
EP0742858B1 (en) | 1999-06-09 |
FR2715671A1 (en) | 1995-08-04 |
WO1995021299A1 (en) | 1995-08-10 |
US6103060A (en) | 2000-08-15 |
ES2133733T3 (en) | 1999-09-16 |
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