EP0190069B1 - Behandlung einer Faserbahn erhalten auf dem Wege der Papierherstellung im Hinblick auf die Verbesserung ihrer Abmessungsstabilität und Verwendung namentlich auf dem Gebiet der Boden- oder Wandbekleidungen - Google Patents

Behandlung einer Faserbahn erhalten auf dem Wege der Papierherstellung im Hinblick auf die Verbesserung ihrer Abmessungsstabilität und Verwendung namentlich auf dem Gebiet der Boden- oder Wandbekleidungen Download PDF

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Publication number
EP0190069B1
EP0190069B1 EP86400072A EP86400072A EP0190069B1 EP 0190069 B1 EP0190069 B1 EP 0190069B1 EP 86400072 A EP86400072 A EP 86400072A EP 86400072 A EP86400072 A EP 86400072A EP 0190069 B1 EP0190069 B1 EP 0190069B1
Authority
EP
European Patent Office
Prior art keywords
dimensional stability
latex
binder
peg
sheet
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
Application number
EP86400072A
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English (en)
French (fr)
Other versions
EP0190069A1 (de
Inventor
Pierre Fredenucci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ArjoWiggins SAS
Original Assignee
Arjomari Prioux SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Arjomari Prioux SA filed Critical Arjomari Prioux SA
Priority to AT86400072T priority Critical patent/ATE41685T1/de
Publication of EP0190069A1 publication Critical patent/EP0190069A1/de
Application granted granted Critical
Publication of EP0190069B1 publication Critical patent/EP0190069B1/de
Expired legal-status Critical Current

Links

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
    • 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
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • 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
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H17/54—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 nitrogen
    • D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2484—Coating or impregnation is water absorbency-increasing or hydrophilicity-increasing or hydrophilicity-imparting
    • Y10T442/2492—Polyether group containing

Definitions

  • the invention relates to improving the dimensional stability of a fibrous sheet by supplying said sheet of chemicals in solution followed by a drying phase.
  • fibrous sheet is meant here a material prepared by the papermaking route and comprising fibers of which at least a part consists of hydrophilic fibers, in particular cellulosic; this material may, where appropriate, comprise a mineral and / or organic filler which is not a binder, an organic binder and one or more adjuvants conventional in stationery.
  • Mineral felts although more economical for the transformer, are less interesting in terms of their dimensional stability, compared to glass veils which are at least as stable as asbestos felts with respect to humidity and water. .
  • the poor dimensional stability of mineral felts is mainly due to the cellulose fibers they contain. As the fibers are very hydrophilic, their dimensions vary greatly depending on the ambient humidity.
  • Papermakers have conducted a lot of research to improve the dimensional stability of such fibrous sheets.
  • cellulosic supports is known by impregnation with binders and wetting agents for purposes other than improving dimensional stability.
  • the wetting agent can in fact, as a surfactant, be used to modify the characteristics of the binder.
  • An object of the invention is to obtain an improvement in the dimensional stability of the coating supports for floor or wall coverings using a new chemical treatment.
  • Another object of the treatment of the invention is, with equal dimensional stability, to be able to reduce the rate of mineral fibers in the supports for floor or wall coverings.
  • Another object of the treatment of the invention is the improvement of the dimensional stability of other paper carriers containing cellulose fibers.
  • the dimensional stability of the fibrous sheet with respect to moisture and water is remarkably improved when the fibrous sheet containing cellulosic fibers is impregnated with a chemical mixture comprising at least 15 parts by dry weight of at least one wetting agent per 85 parts by dry weight of at least one organic binder of the synthetic latex type or water-soluble binder.
  • the impregnated sheet is then dried.
  • wetting agent used are sufficient to, in addition to the possible fixing of a certain amount of wetting agent on the binder, allow satisfactory wetting of cellulose.
  • the binder to be used is an organic binder of natural or synthetic origin since mineral binders and cements have the drawback of having too long a setting time.
  • the organic binder also binds the constituents of the fibrous sheet to one another and can strengthen the physical properties of the paper sheet.
  • the preferred synthetic latexes have a surface tension of less than 40mN / m.
  • Wetting is understood to mean any hygroscopic chemical having a low surface tension and allowing the sheet to quickly take up large amounts of water even at low ambient humidity. In doing so, the sheet remains dimensionally stable during the evolution towards a higher humidity.
  • the treatment of the fibrous sheet can be carried out directly on a paper machine or on an autonomous impregnation or coating installation.
  • the treatment can therefore be carried out by the papermaker or by a processor.
  • the fibrous sheet is treated by any impregnation process known to those skilled in the art. Possible devices are in particular spraying devices, impregnators, but the size press is preferred, which is the device commonly used on paper machines.
  • Impregnation of the fibrous sheet may only be carried out on one side but it is preferable to use devices allowing impregnation on both sides.
  • the sheet was impregnated by means of a size press fed with the pure, wetting or binding products, and their mixtures.
  • the dry matter deposit on the sheet is adjusted by a more or less significant dilution of the impregnation solution with water.
  • an anti-foam was selected and added to the bath.
  • an alkaline sizing agent based on dimeric alkyl ketene was incorporated into the impregnation solution to reduce the surface absorption of water in the sheet after treatment.
  • the antifoam is added at a rate of 0.05% relative to the total volume of the final bath.
  • PEG 400 indeed has good efficiency for dimensional stability and low thermal degradation for temperatures encountered during the envisaged subsequent transformation phase. It is also possible, if necessary, to reduce the sensitivity of PEG to temperature, by the introduction into a size press of suitable stabilizing agents.
  • the dimensional stability is lower than that obtained, with equal deposits, with PEG 400.
  • the impregnation of the sheet has surprisingly improved the RTD by almost 100% without boring during processing.
  • Table II also highlight the advantage of PEG-Nadavine mixtures over BEROCEL 404-Nadavine mixtures both in terms of dimensional stability and physical characteristics.
  • Part 1 Impregnations with pure products.
  • the high deposition PEG provides a good improvement in dimensional stability but it causes a loss of traction when hot and a loss of rigidity compared to the characteristics of the raw sheet.
  • Latex or Nadavine LT does not improve dimensional stability.
  • the latex is DM 122.
  • impregnation with the mixture makes it possible to reduce the deposition of PEG 400 by more than half and to improve hot traction and rigidity.
  • the presence of latex in the impregnation bath increases the binding power of the bath and makes it possible to eliminate the linting of the fibers on the surface of the sheet.
  • Bath preparation is analogous to that of Study 1. Part 1 - impregnation with pure products Nadavine LT and latex have no influence on dimensional stability.
  • PEG improves dimensional stability but there is a drop in cold traction and stiffness.
  • the latex used is latex 3720.
  • blends again allow for greater dimensional stability while providing less PEG 400 to the sheet.
  • the mixtures make it possible to limit the losses of physical characteristics compared to the values measured for the paper before impregnation.
  • the sheet has the following composition:
  • the deposit in a BEROCEL 404-latex mixture is twice as important as for the PEG 400-latex mixture (Table V bis).
  • the PEG 400-latex mixture provides better rigidity and better heat traction.
  • the removal obtained was 25 g / m 2 sec (total of the two faces).
  • Impregnation with the PEG 400-latex bath allows a better level of dimensional stability to be obtained without significantly degrading the essential mechanical characteristics of the sheet (Table VI).
  • STUDY 5-Mineral wall covering support This is a thin sheet loaded with low latex content which is obtained according to the process described in European patent application EP 6390.
  • the dimensional stability was measured on a FENCHEL type device.
  • the test piece was steamed for 2 minutes at 200 ° C. before testing and the elongation measurement carried out after 8 minutes of immersion in water.
  • the dimensional stability of the raw sheet is 0.85%.
  • the removal was carried out at a rate of 10.3 g / m 2 sec (total of the 2 faces).
  • the dimensional stability measured is 0.35%, ie a gain of more than 50% compared to the raw sheet.
  • Latex 3726 was replaced in impregnation bath 1 by an equivalent quantity of CE 35 latex.
  • the dry extract of the final mixture was 30%.
  • the removal was carried out at a rate of 11 g / M 2 sec (total of the 2 faces).
  • the dimensional stability is 0.27%, again a very significant gain in dimensional stability.
  • the impregnation bath no longer contains synthetic latex but Nadavine LT.
  • the removal was carried out at a rate of 11.1 g / m 2 sec (total of the 2 faces).
  • reinforcing fibers may have technical drawbacks depending on the end use of the paper obtained, or economical due to the cost of certain qualities of reinforcing fibers such as polyester fibers.
  • Test VIII-4 shows that the quantity of PEG 400 can be significantly reduced while obtaining a net gain in dimensional stability compared to the raw support.
  • the deposit is 15 g / m of dry products for all the tests.
  • Example IX-6 of this study shows that it is possible to obtain a very good improvement in dimensional stability, even with a wetting / binder ratio of 15/85. It also shows the use of specific binders which allows less wetting agent to be used in the impregnation mixture to obtain a level of dimensional stability which is still remarkable compared to that of the raw support.
  • the whiteness was determined using a photovoltaic by measuring the reflectance of a light flux at 457 mm. The measurements were carried out in accordance with TAPPI T 4520M -83.
  • the values indicated correspond to a visual classification of the surface states.
  • test piece is cut from a sheet covered with a layer of expanded plastisol.
  • delamination is started in the support sheet coated with the plastisol layer.
  • the two parts are fixed to the jaws of the dynamometer.
  • the value of the recorded traction corresponds to the force which must be exerted to detach the layer of expanded plastisol from the support.

Claims (8)

1. Behandlungsverfahren einer Faserbahn, die auf dem Wege der Papierherstellung erhalten worden ist, in Hinblick auf die Verbesserung ihrer Abmessungsstabilität, wobei zumindest ein Teil der Fasern hydrophil, insbesondere celluloseartig sind, durch Imprägnierung der Faserbahn mit einer chemischen Zusammensetzung, die zumindest ein Anfeuchtemittel und zumindest ein organisches Klebemittel enthält, dadurch gekennzeichnet, dass das oder die Bindemittel von der Art des synthetischen Latex oder wasserlösliche Bindemittel sind, und dass das Imprägnierungsbad zumindest 15 Trockengewichtsteile des Anfeuchtemittels auf 100 Trockengewichtsteile des Bindemittels und des Anfeuchtemittels aufweist.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Bindemittel ein synthetischer Latex ist und dass das Imprägnierungsbad durch das aufeinanderfolgende Mischen von:
- Wasser
- einem Schaumbremser
- dem Anfeuchtemittel
- dem synthetischen Latex
- und einem Klebstoff erhalten wird.
3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass man einen synthetischen Latex verwendet, der eine Oberflächenspannung aufweist, die kleiner als 40 mN/m ist.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass man als Bindemittel ein wasserlösliches Bindemittel verwendet und dass das Imprägnierungsbad durch das aufeinanderfolgende Mischen von:
- dem wasserlöslichen Bindemittel
- Wasser
- einem Schaumbremser
- dem Anfeuchtemittel
- und einem Klebstoff erhält.
5. Verfahren nach einem der Ansprüche 1 oder 4, dadurch gekennzeichnet, dass man als wasserlösliches Bindemittel eine wässrige Lösung des Polyamid/Polyamin- Epichlorhydrinharzes verwendet.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass man als Anfeuchtemittel eine chemische Zusammensetzung aus der Familie der Polyglycole und deren Derivate verwendet.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass man als Anfeuchtemittel das Polyäthylenglycol verwendet.
EP86400072A 1985-01-18 1986-01-15 Behandlung einer Faserbahn erhalten auf dem Wege der Papierherstellung im Hinblick auf die Verbesserung ihrer Abmessungsstabilität und Verwendung namentlich auf dem Gebiet der Boden- oder Wandbekleidungen Expired EP0190069B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86400072T ATE41685T1 (de) 1985-01-18 1986-01-15 Behandlung einer faserbahn erhalten auf dem wege der papierherstellung im hinblick auf die verbesserung ihrer abmessungsstabilitaet und verwendung namentlich auf dem gebiet der bodenoder wandbekleidungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8500745 1985-01-18
FR8500745A FR2576333B1 (fr) 1985-01-18 1985-01-18 Traitement d'une feuille fibreuse obtenue par voie papetiere en vue d'ameliorer sa stabilite dimensionnelle et application notamment dans le domaine des revetements de sol ou muraux

Publications (2)

Publication Number Publication Date
EP0190069A1 EP0190069A1 (de) 1986-08-06
EP0190069B1 true EP0190069B1 (de) 1989-03-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400072A Expired EP0190069B1 (de) 1985-01-18 1986-01-15 Behandlung einer Faserbahn erhalten auf dem Wege der Papierherstellung im Hinblick auf die Verbesserung ihrer Abmessungsstabilität und Verwendung namentlich auf dem Gebiet der Boden- oder Wandbekleidungen

Country Status (9)

Country Link
US (1) US4710422A (de)
EP (1) EP0190069B1 (de)
JP (1) JPS61215798A (de)
AT (1) ATE41685T1 (de)
BR (1) BR8600190A (de)
CA (1) CA1255457A (de)
DE (1) DE3662541D1 (de)
FI (1) FI80743C (de)
FR (1) FR2576333B1 (de)

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Also Published As

Publication number Publication date
FR2576333B1 (fr) 1987-09-25
DE3662541D1 (en) 1989-04-27
ATE41685T1 (de) 1989-04-15
JPS61215798A (ja) 1986-09-25
CA1255457A (en) 1989-06-13
FI80743C (fi) 1990-07-10
FI860221A (fi) 1986-07-19
FI860221A0 (fi) 1986-01-17
US4710422A (en) 1987-12-01
FR2576333A1 (fr) 1986-07-25
EP0190069A1 (de) 1986-08-06
FI80743B (fi) 1990-03-30
BR8600190A (pt) 1986-09-30

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