EP0027706A1 - Papier sans amiante, lié par un latex - Google Patents

Papier sans amiante, lié par un latex Download PDF

Info

Publication number
EP0027706A1
EP0027706A1 EP80303570A EP80303570A EP0027706A1 EP 0027706 A1 EP0027706 A1 EP 0027706A1 EP 80303570 A EP80303570 A EP 80303570A EP 80303570 A EP80303570 A EP 80303570A EP 0027706 A1 EP0027706 A1 EP 0027706A1
Authority
EP
European Patent Office
Prior art keywords
fibres
wool
asbestos paper
vitreous
water
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.)
Withdrawn
Application number
EP80303570A
Other languages
German (de)
English (en)
Inventor
Brian Hargreaves
Robert Allan Lancaster
Brian Healey
Alan Kenneth Cousens
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.)
Turner and Newall Ltd
Original Assignee
Turner and Newall Ltd
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 Turner and Newall Ltd filed Critical Turner and Newall Ltd
Publication of EP0027706A1 publication Critical patent/EP0027706A1/fr
Withdrawn legal-status Critical Current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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
    • 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
    • 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
    • D21H17/35—Polyalkenes, e.g. polystyrene
    • 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
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • 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
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • D21H17/51—Triazines, e.g. melamine
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays

Definitions

  • This invention relates to latex-bound paper, and provides non-asbestos alternatives to latex-bound asbestos papers.
  • Latex-bound papers based on asbestos fibres are employed in the manufacture of gaskets and seals for use in motor vehicles, where they must be resistant to water, anti-freeze, oil a.nd petrol and withstand fairly high temperatures, e.g. 150°C. They are also used in the chemical industry in making seals resistant to chemical attack. They are commonly made in the form of flexible sheet of thickness 0.1-1.5mm on conventional paper-making machines such as the Fourdrinier. In the process an aqueous slurry of the ingredients which are to compose the product is progressively dewatered as a layer on a water-permeable conveyor (usually of wire mesh), the dewatered layer being subsequently compressed and dried.
  • a water-permeable conveyor usually of wire mesh
  • non-asbestos paper comprises vitreous fibres derived from wool-form material, organic web-forming fibres, unfired ball clay and water-insoluble non-fibrous particulate inorganic filler, the whole being bound toqether by a cured nitrile rubber; said paper being made by dewatering as a layer on a water-permeable conveyor an aqueous slurry whose solids content comprises by weight:- and compressing and drying the layer of dewatered slurry.
  • the vitreous'wool-form fibre employed is preferably glass wool, mineral wool or ceramic fibre wool. If glass wool is used it is preferably employed in a form which has been treated with a silane coupling agent (e.g. gamma-aminopropyltriethoxysilane).
  • silane coupling agent e.g. gamma-aminopropyltriethoxysilane
  • the function of the organic web-forming fibres is primarily to enable the paper to be formed on conventional paper-making machinery, but additionally those fibres impart strength to the total matrix of the finished paper, just as the vitreous fibres derived from wool-form material (the primary reinforcement) do.
  • the organic web-forming fibres are preferably cellulose fibres, but may alternatively be polyethylene or' polypropylene fibres of the kind commercially available under the name PULPEX.
  • the function of the ball clay is to impart handlability to the paper sheet during manufacture.
  • the wate-r-insoluble non-fibrous particulate inorganic filler may be of the kind conventionally used in paper manufacture, for example calcium carbonate, talc, calcium sulphate, kaolin, titanium dioxide, magnesium silicate, or barytes (barium sulphate).
  • barytes which both densifies and improves the oil resistance of the paper, is particularly preferred.
  • the nitrile rubber, which bonds all the fibrous and non-fibrous particles of the paper together is introduced during manufacture as a latex, together with a vulcanising (curing) agent of the usual kind.
  • the paper may contain small amounts (e.g. 0.5-2.5% by weight) of fibres other than the vitreous fibres derived from wool-form material and the web-forming fibres.
  • Such other fibres may for instance be low modulus carbon fibres or water-dispersible E-glass fibres. Such fibres improve green strength of the paper during manufacture; additionally the low modulus carbon fibres impart lubricity to the finished paper.
  • Low modulus here means a Young's modulus in tension below 125GPa.
  • a melamine-formaldehyde resin suitably at about 1% by weight, can be included in the slurry that is dewatered, in order to promote bonding between the various fibres and the nitrile rubber.
  • a small quantity (0.002-0.01% by dry weight of total solids in the slurry) of a flocculating agent of the kind (e.g. a polyacrylamide polyelectrolyte) ordinarily used in paper making can be included in order to facilitate sheet formation and subsequent dewatering.
  • a flocculating agent of the kind e.g. a polyacrylamide polyelectrolyte
  • the stocks (slurries) prepared as in A. above from various formulations as set out in tablesl-3 following were made into flexible sheet material in an entirely conventional way on a Fourdrinier flat wire paper machine, such as is described in Chapters 10 and 11 of "Paper and Board Manufacture” by Julius Grant, James H. young, and Barry G. Watson (Publishers; Technical Division, The British Paper and Board Industry Federation, London, 1978).
  • the slurry. is progressively dewatered as it travels on the water permeable conveyor of the machine, and the dewatered material is consolidated by pressing between rollers, and then dried to low moisture content (suitably 2% by weight).
  • Paper was passed at room temperature between two smooth-faced steel rolls the gap between which was adjustable to control the density of the paper. Two such passes were made on the papers whose properties are reported in Table I.
  • the hot calendering referred to in Table I was carried out as for cold calendering but with the difference that the steel rolls were heated to about a temperature of 145°C. Again, two such passes were made on the papers whose properties are reported in Table I.
  • the purpose of hot calendering as opposed to cold calendering on latex-bound papers is to cause some flow of the latex, thus producing greater consolidation and a higher density.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)
  • Sealing Material Composition (AREA)
EP80303570A 1979-10-19 1980-10-09 Papier sans amiante, lié par un latex Withdrawn EP0027706A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7936393 1979-10-19
GB7936393 1979-10-19

Publications (1)

Publication Number Publication Date
EP0027706A1 true EP0027706A1 (fr) 1981-04-29

Family

ID=10508647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80303570A Withdrawn EP0027706A1 (fr) 1979-10-19 1980-10-09 Papier sans amiante, lié par un latex

Country Status (4)

Country Link
EP (1) EP0027706A1 (fr)
JP (1) JPS5668198A (fr)
BR (1) BR8006648A (fr)
ES (1) ES496022A0 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104317A1 (fr) * 1982-08-30 1984-04-04 Goetze Ag Matériaux d'étanchéité plats, en matière tendre, en particulier pour la fabrication des joints d'étanchéité plats hautement résistants
EP0112010A1 (fr) * 1982-11-20 1984-06-27 T&N Materials Research Limited Matière flexible sous forme de feuille
FR2545115A1 (fr) * 1983-04-27 1984-11-02 T & N Materials Res Ltd Feuille flexible sans amiante et joint constitue d'une telle feuille
FR2553121A1 (fr) * 1983-10-06 1985-04-12 Arjomari Prioux Feuille papetiere, son procede de preparation et ses applications notamment comme produit de substitution des voiles de verre impregnes

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130263B (en) * 1982-11-12 1985-10-02 T & N Materials Res Ltd Non-asbestos sheet material
JPS62164784A (ja) * 1986-01-16 1987-07-21 Nippon Reinz Co Ltd ジヨイントシ−ト用組成物
WO2022230536A1 (fr) * 2021-04-28 2022-11-03 阿波製紙株式会社 Feuille de fibres inorganiques et son procédé de production

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773763A (en) * 1954-04-22 1956-12-11 Armstrong Cork Co Mineral fiber product containing hydrated virgin kraft pulp and method of producing the same
GB818652A (en) * 1956-04-23 1959-08-19 Armstrong Cork Co Manufacture of paper or the like
GB1107413A (en) * 1964-01-16 1968-03-27 United States Gypsum Co Water-felted mineral wool building insulation product
GB2001371A (en) * 1977-07-08 1979-01-31 Redco Sa Composition of a material based on mineral fibres

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773763A (en) * 1954-04-22 1956-12-11 Armstrong Cork Co Mineral fiber product containing hydrated virgin kraft pulp and method of producing the same
GB818652A (en) * 1956-04-23 1959-08-19 Armstrong Cork Co Manufacture of paper or the like
GB1107413A (en) * 1964-01-16 1968-03-27 United States Gypsum Co Water-felted mineral wool building insulation product
GB2001371A (en) * 1977-07-08 1979-01-31 Redco Sa Composition of a material based on mineral fibres

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104317A1 (fr) * 1982-08-30 1984-04-04 Goetze Ag Matériaux d'étanchéité plats, en matière tendre, en particulier pour la fabrication des joints d'étanchéité plats hautement résistants
US4748075A (en) * 1982-08-30 1988-05-31 Goetze Ag Flat sealing material made of a soft substance, particularly for the production of gaskets that are to be subjected to high stresses
EP0112010A1 (fr) * 1982-11-20 1984-06-27 T&N Materials Research Limited Matière flexible sous forme de feuille
FR2545115A1 (fr) * 1983-04-27 1984-11-02 T & N Materials Res Ltd Feuille flexible sans amiante et joint constitue d'une telle feuille
FR2553121A1 (fr) * 1983-10-06 1985-04-12 Arjomari Prioux Feuille papetiere, son procede de preparation et ses applications notamment comme produit de substitution des voiles de verre impregnes
EP0145522A1 (fr) * 1983-10-06 1985-06-19 Arjomari-Prioux S.A. Feuille papetière, son procédé de préparation et ses applications notamment comme produit de substitution des voiles de verre imprégnés

Also Published As

Publication number Publication date
JPS5668198A (en) 1981-06-08
ES8107350A1 (es) 1981-10-01
ES496022A0 (es) 1981-10-01
BR8006648A (pt) 1981-04-22

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Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TURNER & NEWALL PLC

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820403

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HEALEY, BRIAN

Inventor name: HARGREAVES, BRIAN

Inventor name: COUSENS, ALAN KENNETH

Inventor name: LANCASTER, ROBERT ALLAN