EP0398825B1 - Verfahren zur Herstellung eines flachen, biegsamen und schwer zerreissbaren Substrats und dasselbe - Google Patents

Verfahren zur Herstellung eines flachen, biegsamen und schwer zerreissbaren Substrats und dasselbe Download PDF

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Publication number
EP0398825B1
EP0398825B1 EP90420230A EP90420230A EP0398825B1 EP 0398825 B1 EP0398825 B1 EP 0398825B1 EP 90420230 A EP90420230 A EP 90420230A EP 90420230 A EP90420230 A EP 90420230A EP 0398825 B1 EP0398825 B1 EP 0398825B1
Authority
EP
European Patent Office
Prior art keywords
fibers
artificial
natural
cellulosic
substrate
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
EP90420230A
Other languages
English (en)
French (fr)
Other versions
EP0398825A1 (de
Inventor
Fernand Mora
Claude Raymond Riou
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.)
International Paper SA
Original Assignee
Aussedat Rey 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 Aussedat Rey SA filed Critical Aussedat Rey SA
Publication of EP0398825A1 publication Critical patent/EP0398825A1/de
Application granted granted Critical
Publication of EP0398825B1 publication Critical patent/EP0398825B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • 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
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/08—Synthetic cellulose fibres from regenerated cellulose

Definitions

  • the present invention relates to the manufacture of a planar, fibrous, flexible substrate, of the sheet, sheet or film type and it relates, more particularly, to such flexible substrates having good tear resistance as well as good ability to l 'printability.
  • the invention relates, more specifically, to such substrates used as paper supports for printing, writing, or even packaging of various products and articles.
  • the invention is directed to planar, fibrous, flexible, hardly tearable substrates, intended for the manufacture of packaging envelopes, sachets, bags or pouches, maps, printed matter. .
  • Such articles have always been made from sheets of paper, of the conventional or particular type when it is desired to reinforce their resistance by their intrinsic quality or by the provision of reinforcements.
  • Papers have always been made from cellulosic fibers which are more or less refined in order to increase the specific surface and improve the potential to create interfiber bonds.
  • Papers are reputed to have certain positive characteristics such as printability and also negative characteristics such as low tear strength and hygroscopic sensitivity.
  • the prior art has also proposed a solution consisting in producing a paper having better tear resistance by incorporating into conventional cellulosic fibers synthetic fibers chosen from polyolefins, polyamides, polyesters, etc.
  • synthetic fibers chosen from polyolefins, polyamides, polyesters, etc.
  • the objective sought was to try to improve the physical characteristics of ordinary papers by the addition of synthetic fibers.
  • patent BE-A-670,968 which consists, in order to improve the overall resistance of absorbent cleaning papers in wet conditions, of mixing long artificial non-fibrillatable fibers with short fibrillated fibers and adding one binder per point ensuring most of the improvement in strength.
  • This prior art does not relate to a paper that is difficult to tear, having, moreover, an aptitude for printing-writing.
  • the degree of refining of the cellulosic fibers is extremely low, of the order of 16 ° SR, which practically corresponds to a dispersed raw pulp. No lesson useful in obtaining better tear resistance can therefore be retained.
  • the object of the invention is to remedy the drawbacks of the above techniques by proposing a new method for manufacturing a planar, fibrous, flexible, hardly tearable substrate, more particularly but not exclusively, intended for the production of envelopes. , pouches, sachets or bags.
  • the object of the invention is to produce, at an attractive cost price, a flat, fibrous, flexible, hardly tearable substrate, having, moreover, a good aptitude for printing-writing, as well as a resistance notably increased with variations in ambient humidity.
  • Another object of the invention is to provide a new substrate having good folding ability to facilitate the making of envelopes, pouches, sachets or bags.
  • the subject of the invention is also, as a new industrial product, a planar, fibrous, flexible substrate, of the type based on cellulosic fibers, characterized in that it comprises natural cellulosic fibers originating from an ordinary and refined pulp. by fibrillation until reaching a drainability greater than or equal to 60 ° Schopper-Riegler and artificial fibers mixed at a rate of 30 to 70% by dry weight of the total load of cellulosic and artificial fibers.
  • the method according to the invention firstly consists in preparing cellulosic fibers preferably of the same species or plant varieties. Cellulose fibers from hardwoods or woody grasses are preferred, although good results can also be obtained with fibers from conifers.
  • the objective is to microfibrillate the cellulose fibers so as to increase the specific surface for improve the ability to create hydrogen bonds.
  • a mixture is then prepared by incorporating into the paper pulp, super-refined compared to the ordinary treatment of conventional paper pulp, a load of artificial fibers of 30 to 70% by dry weight relative to the total load of cellulosic fibers and artificial.
  • a load of artificial fibers of 30 to 70% by dry weight relative to the total load of cellulosic fibers and artificial.
  • the mixing is carried out in an aqueous medium according to the usual conditions of the papermaking technique, for example at a rate of 2 to 4% by weight of cellulosic and artificial fibers.
  • the artificial fibers used may belong to one or more families and, preferably, to that of polyolefins, polyamides and polyesters for plastic fibers, and viscose or cellulose acetate for regenerated ones.
  • Polyethylene terephthalate fibers are particularly suitable for the plastic family.
  • the incorporated artificial fibers are in the form of segments of determined length greater than 3 mm and preferably between 4 and 12.
  • the fibers chosen are at most equal to 10 decitex and, preferably, between 1.1 and 2 decitex.
  • the load of artificial fibers is preferably equal to 50% by dry weight relative to the total load of cellulosic and artificial fibers.
  • the mixing between the cellulosic fibers and the artificial fibers in an aqueous medium is carried out with optionally the addition of adjuvants making it possible to subsequently improve the opacity, the hydrophobicity or even the insensitivity to water or humidity.
  • adjuvants used for this purpose can be considered as products known for these functions in the field of paper pulp and do not, strictly speaking, fall within the object of the invention, since their incorporation into the mixture, despite the presence artificial fibers, comes directly from the knowledge of those skilled in the art.
  • the mixture obtained after homogenization under usual conditions, is diluted in water between 0.2 and 0.4% then is poured into the headbox of a paper-making machine, so as to be delivered from usual way on the drip cloth from which a sheet can be produced under traditional conditions.
  • composition is certainly given below making it possible to compare the improvements in performance of the substrate in accordance with the invention compared with an ordinary paper and a substrate of the Tyvek® type.
  • the substrate according to the invention is, for example, produced from a mixture of paper pulp from a plant variety Eucalyptus sp and obtained by chemical means. Such a paste is superfine by fibrillation until it has a drainability equal to 95 ° SR.
  • a mixture is carried out, in an aqueous medium, by incorporating fibers at a concentration of 3% by weight, these fibers including 50% of cellulose fibers and 50% of artificial fibers of the polyester family of 6 mm in length and 1, 7 decitex. This mixture is then diluted to 0.45% in the headbox to produce a weight substrate 90 g / m2.
  • the substrate according to the invention is the same as in the previous example, except that the artificial fibers consist entirely of viscose.
  • the substrate according to Example 2 also has the advantage of being completely biodegradable.

Landscapes

  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Artificial Filaments (AREA)
  • Moulding By Coating Moulds (AREA)
  • Drying Of Semiconductors (AREA)

Claims (10)

  1. Verfahren zur Herstellung flächiger, faseriger und flexibler Substrate auf der Basis von Naturfasern und Chemiefasern, die eine verbesserte Reißfestigkeit aufweisen, das folgende Schritte umfaßt:
    Einmischen der Fasern in Wasser, Verdünnen des erhaltenen Gemischs, Eingießen des Gemischs in den Stoffauflauf einer Papiermaschine und Herstellen von Substratbögen in der mit dem Gemisch versorgten Papiermaschine, die unter herkömmlichen Betriebsbedingungen arbeitet,
    dadurch gekennzeichnet, daß
    - vor dem Mischen der Fasern mit Wasser durch Fibrillieren natürliche Cellulosefasern aus einer üblichen Pulpe erzeugt werden, bis sie eine Entwässerbarkeit von mindestens 60° Schopper-Riegler aufweisen,
    - und anschließend eine Charge der so aufbereiteten Cellulosefasern mit 30 bis 70 Trockengew.-% Chemiefasern, bezogen auf die Gesamtcharge aus Cellulosefasern und Chemiefasern, in Wasser gemischt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Chemiefasern unter Fasern mit einer Feinheit von 1 bis 10 dtex ausgewählt werden.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Chemiefasern eine Länge von mindestens 3 mm besitzen.
  4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Chemiefasern eine Länge von 4 bis 12 mm besitzen.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Chemiefasern Synthesefasern und Regeneratfasern sein können.
  6. Flächiges, faseriges und flexibles Substrat auf der Basis von Naturfasern und Chemiefasern, dadurch gekennzeichnet, daß es natürliche Cellulosefasern aus einer üblichen Pulpe, die durch Fibrillieren bis zu einer Entwässerbarkeit von mindestens 60° Schopper-Riegler aufbereitet wurden, sowie Chemiefasern enthält, die in einer Menge von 30 bis 70 Trokkengew.-%, bezogen auf die Gesamtcharge der Cellulosefasern und der synthetischen Fasern, beigemischt sind.
  7. Flächiges Substrat nach Anspruch 6, dadurch gekennzeichnet, daß die Chemiefasern eine Feinheit von 1 bis 10 dtex besitzen.
  8. Flächiges Substrat nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Chemiefasern mindestens 3 mm lang sind.
  9. Flächiges Substrat nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß die Chemiefasern 4 bis 12 mm lang sind.
  10. Flächiges Substrat nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß die Chemiefasern Fasern auf Viskosebasis sind.
EP90420230A 1989-05-18 1990-05-16 Verfahren zur Herstellung eines flachen, biegsamen und schwer zerreissbaren Substrats und dasselbe Expired - Lifetime EP0398825B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8906760A FR2647128B1 (fr) 1989-05-18 1989-05-18 Procede de fabrication d'un substrat plan, fibreux, souple, difficilement dechirable et substrat obtenu
FR8906760 1989-05-18

Publications (2)

Publication Number Publication Date
EP0398825A1 EP0398825A1 (de) 1990-11-22
EP0398825B1 true EP0398825B1 (de) 1994-04-06

Family

ID=9381938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420230A Expired - Lifetime EP0398825B1 (de) 1989-05-18 1990-05-16 Verfahren zur Herstellung eines flachen, biegsamen und schwer zerreissbaren Substrats und dasselbe

Country Status (13)

Country Link
US (1) US5387319A (de)
EP (1) EP0398825B1 (de)
JP (1) JP2950514B2 (de)
AT (1) ATE104003T1 (de)
CA (1) CA2017060C (de)
DE (1) DE69007856T2 (de)
DK (1) DK0398825T3 (de)
ES (1) ES2055387T3 (de)
FI (1) FI94272C (de)
FR (1) FR2647128B1 (de)
IE (1) IE63968B1 (de)
NO (1) NO176675C (de)
PT (1) PT94060B (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689530B1 (fr) * 1992-04-07 1996-12-13 Aussedat Rey Nouveau produit complexe a base de fibres et de charges, et procede de fabrication d'un tel nouveau produit.
JPH09327982A (ja) * 1996-06-10 1997-12-22 Lintec Corp 綴じ用テープ用紙および綴じ用テープ
FI108238B (fi) * 1998-02-09 2001-12-14 Metsae Serla Oyj Paperin valmistuksessa käytettävä hienoaine, menetelmä sen valmistamiseksi sekä hienoainetta sisältävä paperimassa ja paperi
US20040168781A1 (en) * 2002-08-05 2004-09-02 Petri Silenius Noil for use in paper manufacture, method for its production, and paper pulp and paper containing such noil
US8133353B2 (en) * 2005-03-15 2012-03-13 Wausau Paper Corp. Creped paper product
PL2236664T3 (pl) 2009-03-30 2016-06-30 Omya Int Ag Sposób wytwarzania zawiesin nanofibrylarnej celulozy
EP2236545B1 (de) 2009-03-30 2014-08-27 Omya International AG Verfahren zur Herstellung von nano-fibrillären Zellulosegels
EP2386682B1 (de) 2010-04-27 2014-03-19 Omya International AG Verfahren zur Herstellung von Verbundstoffmaterialien auf Gelbasis
PL2386683T3 (pl) 2010-04-27 2014-08-29 Omya Int Ag Sposób wytwarzania materiałów kompozytowych na bazie żelu
US9353480B2 (en) 2012-04-11 2016-05-31 Ahlstrom Corporation Sterilizable and printable nonwoven packaging materials
EP2847382B1 (de) 2012-05-11 2016-11-09 Södra Skogsägarna ekonomisk förening Verfahren zur herstellung eines verbundartikels mit cellulosepulpefasern und einer thermoplastischen matrix
PL2712959T3 (pl) * 2012-09-28 2015-04-30 Glatfelter Gernsbach Gmbh & Co Kg Przezroczysty materiał filtracyjny
FR3003581B1 (fr) 2013-03-20 2015-03-20 Ahlstroem Oy Support fibreux a base de fibres et de nanofibrilles de polysaccharide
MX2018004245A (es) 2015-10-14 2018-08-01 Fiberlean Tech Ltd Material de hoja moldeable en 3d.

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GB982114A (en) * 1960-05-23 1965-02-03 Fmc Corp Fibrillatable artificial fibre
FR87511E (fr) * 1964-11-10 1966-08-26 Cta Papiers absorbants résistants à l'état mouillé, à base de fibres artificielles en cellulose régénérée
GB1397308A (en) * 1972-07-10 1975-06-11 Wiggins Teape Research Dev Ltd Non-woven fibrous material
ATE2233T1 (de) * 1978-09-01 1983-01-15 Imperial Chemical Industries Plc Absorbierendes papier und verfahren zu seiner herstellung.
SU827661A1 (ru) * 1979-05-03 1981-05-07 Марийский Филиал Всесоюзного Научно- Производственного Объединенияцеллюлозно-Бумажной Промышленности Способ изготовлени волокнистойМАССы дл элЕКТРОизОл циОННОй буМАги
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JPS6155299A (ja) * 1984-08-24 1986-03-19 旭化成株式会社 繊維結束数が極度に少ない薄葉紙
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JPS62191600A (ja) * 1986-02-14 1987-08-21 本州製紙株式会社 不織布の製造方法
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Also Published As

Publication number Publication date
DE69007856D1 (de) 1994-05-11
FI94272C (fi) 1995-08-10
EP0398825A1 (de) 1990-11-22
US5387319A (en) 1995-02-07
ATE104003T1 (de) 1994-04-15
DE69007856T2 (de) 1994-09-15
ES2055387T3 (es) 1994-08-16
FR2647128B1 (fr) 1991-12-27
NO902089L (no) 1990-11-19
IE63968B1 (en) 1995-06-28
DK0398825T3 (da) 1994-08-08
FR2647128A1 (fr) 1990-11-23
CA2017060C (en) 1997-06-24
NO176675B (no) 1995-01-30
JPH0382892A (ja) 1991-04-08
NO176675C (no) 1995-05-10
NO902089D0 (no) 1990-05-11
PT94060A (pt) 1991-01-08
FI902455A0 (fi) 1990-05-17
FI94272B (fi) 1995-04-28
JP2950514B2 (ja) 1999-09-20
PT94060B (pt) 1996-11-29
CA2017060A1 (en) 1990-11-18
IE901783L (en) 1990-11-18

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