EP0090556A1 - Papiers stabilisés dimensionnellement - Google Patents

Papiers stabilisés dimensionnellement Download PDF

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Publication number
EP0090556A1
EP0090556A1 EP83301502A EP83301502A EP0090556A1 EP 0090556 A1 EP0090556 A1 EP 0090556A1 EP 83301502 A EP83301502 A EP 83301502A EP 83301502 A EP83301502 A EP 83301502A EP 0090556 A1 EP0090556 A1 EP 0090556A1
Authority
EP
European Patent Office
Prior art keywords
paper
polymeric material
resin
radiation
coating
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Withdrawn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
EP83301502A
Other languages
German (de)
English (en)
Inventor
Roger Edward Wallis
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.)
Wiggins Teape Group Ltd
Original Assignee
Wiggins Teape Group 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 Wiggins Teape Group Ltd filed Critical Wiggins Teape Group Ltd
Publication of EP0090556A1 publication Critical patent/EP0090556A1/fr
Withdrawn legal-status Critical Current

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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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/16—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising curable or polymerisable 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18—Highly hydrated, swollen or fibrillatable 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/385—Oxides, hydroxides or carbonates
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/46—Non-macromolecular organic compounds
    • D21H19/48—Diolefins, e.g. butadiene; Aromatic vinyl monomers, e.g. styrene; Polymerisable unsaturated acids or derivatives thereof, e.g. acrylic acid
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/64—Inorganic 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/14—Paper having stable form or dimension; Curl-resistant paper

Definitions

  • This invention relates to paper having improved dimensional stability and to a process for the manufacture thereof.
  • Paper is conventionally made from cellulosic papermaking fibres by a progressive removal of water from an aqueous dispersion of the fibres until it develops its full strength as a finished paper when the moisture content is between about 4% and 8%.
  • the final moisture content depends upon the kind of paper being manufactured and the operating conditions of the papermaking machine.
  • the extent to which hydrogen bonding occurs is related to the physical characteristics of the cellulosic fibres used.
  • wet or highly beaten fibres have their surface areas and suppleness increased as compared with less beaten fibres. This results in an increase in the degree of interfibre contact and thus also in the level of hydrogen bonding, with consequentially greater shrinkage of the web.
  • natural tracing paper is to be taken as referring to tracing paper in which transparency is conferred primarily by the pretreatment of the paper making fibres, and to distinguish from “prepared tracing paper” in which transparency is derived essentially from impregnants applied after the paper has been manufactured.
  • the invention has particular advantages for use with natural tracing paper but can be used effectively for the production of other papers in which improved dimensional stability is required.
  • a method of improving the dimensional stability of a paper comprised at least in part of cellulosic fibres which includes covering both sides of the paper with a polymeric material and then polymerizing the polymeric material by ionizing radiation or ultra violet light to form a hydrophobic coating.
  • the invention also includes a paper formed at least in part from cellulose fibres, each side of the paper having a covering of a polymeric material which has been polymerized by ionizing radiation or ultra violet light to form a hydrophobic coating, and a paper made according to the method set forth.
  • the hydrophobic material may be a resin and may contain
  • Treatment of the paper surface by corona discharge prior to coating with resin also serves both to facilitate resin flow and resin adhesion.
  • pre-coats of polymers or copolymers, optionally containing filler materials such as clays or pigments, may be applied prior to application of the radiation curable material.
  • Such precoats can be applied in either water or solvent media or as polymerizable resin.
  • the ionizing radiation used to cure the resin is preferably electron beam radiation which has the pe ne - trative capability necessary to polymerise coatings on both sides of the paper sheet simultaneously.
  • ultra-violet radiation may also be used provided that a suitable photo-initiator is added to the resin coated onto the paper.
  • ultra-violet radiation can only be used for curing coatings on both sides simultaneously in the case of tracing paper or other papers which are transparent to such radiation.
  • the invention also extends to the use of other forms of radiation such as gamma radiation, or radiation from Cobalt 60 or Caesium 137 sources, which can also provide the necessary energy to cure the resins.
  • the invention has been found to have particular advantages for use in the manufacture of a dimensionally stable tracing paper since it also enhances the paper transparency.
  • this shows a sheet of natural tracing paper 1 having coatings 2 and 3 on each side thereof each consisting of a film of hydrophobic polymer which has been polymerized from a previously applied coating by ionizing or ultra-violet radiation.
  • a matting agent preferably having substantially the same refractive index as the polymeric film.
  • One suitable matting agent is that sold under the trade name GASIL E.B.N. and manufactured by Crosfields, and is preferably present in the coatings at a concentration of between 10% and 15% of the coating by weight.
  • Figure 2 is a cross-section through another paper having good holdout and also carrying hydrophobic coatings cured by ionizing or ultra-violet radiation.
  • the coatings 5 and 5 contain an opacifying pigment, for example titanium dioxide, to enhance the surface appearance of the paper.
  • a paper 7 having a poor holdout carries pre-coats 8 and 9 of polyvinyl alcohol over which hydrophobic coatings 10 and 11 cured by ionizing or ultra-violet radiation are provided.
  • the coatings, 2, 3, 5, 6, 10 and 11 may be of various compositions suitable for cure by appropriate forms of ionizing or ultra-violet radiation.
  • Table I sets out twenty-six resin coating formulations, including diluents and matting agent, which perform satisfactorily in an electron-beam curing process, to provide an improved natural tracing paper of the kind described above with reference to Figure 1.
  • Table 2 sets out the results from using various coatweights of the formulations of Table I in coating 70 grams per square metre natural tracing paper. Curing was carried out in a nitrogen atmosphere (less than 500 parts per million Oxygen) using an Otto Durr laboratory electron beam generating unit operating at 150 KeV (Kilo electron Volts). Wet expansion tests were carried out according to I.S.O. 5635/1978, a mean of three tests being taken for each example.
  • the light transmission desnity values for the coated paper listed in the last column of Table 2 were derived in tests using a Baldwin Mk.5 Photometer. The results are taken from the scale readings on this instrument, the scale being zero to 2, zero representing a completely clear film and 2 a totally opaque substrate.
  • coatings confer an increase in light transmission (and therefore transparency) on natural tracing paper.
  • the invention was also carried out using ultra-violet curable material.
  • a formulation was prepared comprising 50% urethane acrylate, 33% Hexane Diol Diacraylate, 12% of a silica matting agent comprising GASIL E.B.N. (manufactured by Joseph Crosfield and Sons Ltd.) and 5% of a photo initiator 2-hydroxy-2 methyl-1 phenyl propan-1-one (DAROCUR 1173 manufactured by Merck.
  • Coating onto 70 gram per sq. metre natural tracing paper was undertaken using a screen printing squeegee in the laboratorey, variations in coatweight being achieved by varying the squeegee pressure.
  • the coating was cured in the laboratory under a 200 watt per inch medium pressure mercury vapour lampa and a wet expansion test subsequently carried out using the I.S.O. 5635/1978 test.

Landscapes

  • Paper (AREA)
  • Laminated Bodies (AREA)
EP83301502A 1982-03-22 1983-03-17 Papiers stabilisés dimensionnellement Withdrawn EP0090556A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8208287 1982-03-22
GB8208287 1982-03-22

Publications (1)

Publication Number Publication Date
EP0090556A1 true EP0090556A1 (fr) 1983-10-05

Family

ID=10529167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83301502A Withdrawn EP0090556A1 (fr) 1982-03-22 1983-03-17 Papiers stabilisés dimensionnellement

Country Status (4)

Country Link
EP (1) EP0090556A1 (fr)
JP (1) JPS58191294A (fr)
ES (1) ES8403547A1 (fr)
FI (1) FI830905L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000084A1 (fr) * 1984-06-08 1986-01-03 The Wiggins Teape Group Limited Revetement de substrats
FR2777297A1 (fr) * 1998-02-26 1999-10-15 Thibierge Et Comar Papier transparent ou translucide couche ayant une bonne imprimabilite et son procede de fabrication

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5921796A (ja) * 1982-07-26 1984-02-03 サンノプコ株式会社 紙塗工用水性組成物およびそれを用いた塗工紙の製造方法
JP5879721B2 (ja) * 2011-03-30 2016-03-08 大日本印刷株式会社 化粧板及び化粧板の製造方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB213810A (en) * 1923-06-14 1924-04-10 Robert William Brumby Improvements in or relating to the manufacture of transparent paper
DE1282437B (de) * 1962-02-14 1968-11-07 Heinr Aug Schoeller Soehne Fa Verfahren zum Herstellen von transparentem Zeichenpapier
GB1175623A (en) * 1967-03-10 1969-12-23 Ici Ltd Data Cards
JPS4972408A (fr) * 1972-11-21 1974-07-12
JPS4972407A (fr) * 1972-11-21 1974-07-12
US4128437A (en) * 1973-11-26 1978-12-05 Sumitomo Chemical Company, Limited Transparentizing agent for paper
US4137046A (en) * 1975-10-07 1979-01-30 Mitsubishi Paper Mills, Ltd. Transparent cellulosic paper and method for making the same
US4177314A (en) * 1978-10-25 1979-12-04 King Seeley Thermos Company Method of printing paper
JPS5529200A (en) * 1978-08-19 1980-03-01 Bachorz Guenther Inductive element structure
JPS5567097A (en) * 1978-11-16 1980-05-20 Bridgestone Tire Co Ltd Method of rendering paper transparent
US4246315A (en) * 1978-01-13 1981-01-20 Sud-West Chemie Gmbh Carrier materials impregnated with thermosetting resins, process for their manufacture and their use
GB2066732A (en) * 1979-12-12 1981-07-15 Azona Co Ltd Film-paper fibre layer laminate and process for preparation thereof

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB213810A (en) * 1923-06-14 1924-04-10 Robert William Brumby Improvements in or relating to the manufacture of transparent paper
DE1282437B (de) * 1962-02-14 1968-11-07 Heinr Aug Schoeller Soehne Fa Verfahren zum Herstellen von transparentem Zeichenpapier
GB1175623A (en) * 1967-03-10 1969-12-23 Ici Ltd Data Cards
JPS4972408A (fr) * 1972-11-21 1974-07-12
JPS4972407A (fr) * 1972-11-21 1974-07-12
US4128437A (en) * 1973-11-26 1978-12-05 Sumitomo Chemical Company, Limited Transparentizing agent for paper
US4137046A (en) * 1975-10-07 1979-01-30 Mitsubishi Paper Mills, Ltd. Transparent cellulosic paper and method for making the same
US4246315A (en) * 1978-01-13 1981-01-20 Sud-West Chemie Gmbh Carrier materials impregnated with thermosetting resins, process for their manufacture and their use
JPS5529200A (en) * 1978-08-19 1980-03-01 Bachorz Guenther Inductive element structure
US4177314A (en) * 1978-10-25 1979-12-04 King Seeley Thermos Company Method of printing paper
JPS5567097A (en) * 1978-11-16 1980-05-20 Bridgestone Tire Co Ltd Method of rendering paper transparent
GB2066732A (en) * 1979-12-12 1981-07-15 Azona Co Ltd Film-paper fibre layer laminate and process for preparation thereof

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 47, no. 2, August 1976, page 231, no. 2159, Appleton, Wisconsin, USA & JP - A - 74 72407 (SANYO-KOKUSAKU PULP CO., LTD.)12-07-1974 *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 47, no. 3, September 1976, page 334, no. 3201, Appleton, Wisconsin, USA & JP - A - 74 72408 (SANYO-KOKUSAKU PULP CO., LTD.) 12-07-1974 *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 51, no. 7, January 1981, page 777, no. 7198, Appleton, Wisconsin, USA & JP - A - 80 67097 (BRIDGESTONE TIRE CO., LTD.) 20-05-1980 *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 52, no. 4, October 1981, page 474, no. 4333, Appleton, Wisconsin, USA & JP - A - 80 29200 (MITSUBISHI PAPER MILLS LTD.) 01-08-1980 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000084A1 (fr) * 1984-06-08 1986-01-03 The Wiggins Teape Group Limited Revetement de substrats
AU568024B2 (en) * 1984-06-08 1987-12-10 Wiggins Teape Group Limited, The Coating substrates
US4748087A (en) * 1984-06-08 1988-05-31 The Wiggins Teape Group Limited Plastic laminate of furniture foil and method of making
FR2777297A1 (fr) * 1998-02-26 1999-10-15 Thibierge Et Comar Papier transparent ou translucide couche ayant une bonne imprimabilite et son procede de fabrication

Also Published As

Publication number Publication date
FI830905L (fi) 1983-09-23
FI830905A0 (fi) 1983-03-18
JPS58191294A (ja) 1983-11-08
ES520837A0 (es) 1984-03-16
ES8403547A1 (es) 1984-03-16

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

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19840330

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

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18W Application withdrawn

Withdrawal date: 19841213

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WALLIS, ROGER EDWARD