EP0653516B1 - Produkt auf der Basis von lignozellulosehaltigen Materialien und Verfahren zu seiner Herstellung - Google Patents

Produkt auf der Basis von lignozellulosehaltigen Materialien und Verfahren zu seiner Herstellung Download PDF

Info

Publication number
EP0653516B1
EP0653516B1 EP94850175A EP94850175A EP0653516B1 EP 0653516 B1 EP0653516 B1 EP 0653516B1 EP 94850175 A EP94850175 A EP 94850175A EP 94850175 A EP94850175 A EP 94850175A EP 0653516 B1 EP0653516 B1 EP 0653516B1
Authority
EP
European Patent Office
Prior art keywords
ply
fibers
product
softwood
walled
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
EP94850175A
Other languages
English (en)
French (fr)
Other versions
EP0653516A1 (de
Inventor
Ilkka Kartovaara
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.)
Stora Enso Oyj
Original Assignee
Enso Gutzeit Oy
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 Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Publication of EP0653516A1 publication Critical patent/EP0653516A1/de
Application granted granted Critical
Publication of EP0653516B1 publication Critical patent/EP0653516B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers

Definitions

  • the present invention relates to a method in accordance with the preamble of claim 1 and a lignocellulosic-material based product according to the preamble of Claim 7.
  • EP-A-0484101 discloses a paper towel having two outer layers of chemical fiber blend of chemical softwood and hardwood fiber and a center layer of an anfractuous high bulk softwood fiber blend of anfractuous fiber and long mechanical pulp fiber.
  • Multi-ply products such as multi-ply paper, board or cardboard comprise more than two plies.
  • multi-ply board comprises three different plies so that the top-liner plies may have identical composition.
  • the center web ply may typically be formed by a web comprising one or more plies of identical composition which are couched together.
  • a multi-ply board acts as a hollow-core beam structure in which the maximum stiffness is attained by a composition having its center ply from a material of maximally high bulk and the outer plies of a liner material of maximally high Young's modulus. Optimally this concept can be utilized by forming the liner and center plies from entirely different types of pulps.
  • a board having the maximum possible bulk is achieved by using mechanical or chemimechanical pulp in the center ply (conventional folding boxboard).
  • foodstuff packaging and graphic art principally uses board grades made from groundwood-free pulp and having their center ply also made from chemical pulp. Resultingly, the manufacture of foodstuff packaging and graphic art boards have involved product lines requiring a high degree of conversion and special skills.
  • the manufacture of mechanical pulps uses softwood almost exclusively. In the pulping process, particularly in the grinding step, long softwood fibers are cut and shortened so that the formation of the center ply made thereof takes place in a satisfactory manner. By contrast, long softwood fibers undergoing the chemical pulping process are not subjected to such severe cutting, whereby the formation properties of the produced pulp are extremely unfavourable.
  • the center ply of board made from chemical pulp is formed from hardwood pulp although its bulk (particularly that of deciduous wood pulp) is generally inferior and thus adverse to the goal of achieving an advantageous structure for the beam structure of the board center ply.
  • Softwood pulp particularly pinewood pulp, contains fibers which give advantageous properties to the outer and center plies of a three-ply board.
  • softwood pulp at the fiber level is not a homogeneous raw material, but rather, comprises two entirely different fiber types: thick-walled summerwood fibers and thin-walled springwood fibers.
  • summerwood fibers of softwood pulp are an ideal raw material for the center ply of a board made from chemical pulp.
  • the bulk of a sheet made therefrom is approx. 40 % better than that of a sheet made from birch pulp.
  • springwood fibers of softwood pulp are an extremely advantageous raw material for the liner ply of a board, particularly if the board will be coated.
  • Such band-shaped fibers form a well closed surface, do not increase the roughness of the surface texture in the same manner as conventional softwood pulp (relative to birch pulp), and additionally, improve the Young's modulus of the liner ply thus contributing to the achievement of maximum stiffness.
  • the different properties required for the liner and center plies of a multi-ply board can be achieved by utilizing the characteristics of the extremely different fiber types contained in the annual growth of softwood.
  • currently known industrial-scale processes fail to achieve completely pure fractions, it is possible to prove on the basis of properties offered by fractions purified through a fractionation process that the stiffness of, e.g., a three-ply board made from chemical pulp can be improved by approx. 30 % relative to conventional board grades.
  • the fibers of softwood pulp can be cut so effectively through refining that a multi-ply product according to the invention can be made using very high proportions of softwood pulp without impairing the properties of the board. It is an object of the invention to improve the fractionation techniques suited for essentially improving the properties of softwood pulp as a raw material of a multi-ply product such as three-ply board made from chemical pulp.
  • the production of a multi-ply product according to the invention aims at maximally effective fractionation summerwood and springwood fibers.
  • fractionated pulp is used which is enriched maximally pure in springwood fibers.
  • the invention is characterized by having the at least one center ply of the multi-ply product enriched with thick-walled summerwood fibers of softwood, further advantageously having the liner plies of the multi-ply product enriched with thinwalled and/or band-shaped springwood fibers of softwood.
  • a particularly advantageous embodiment of the method and product structure according to the invention is characterized by having the liner plies of a multi-ply product, most preferably a multi-ply board, formed from softwood pulp or a mixture of softwood and hardwood pulp, whereby the softwood pulp fraction is enriched with thin-walled springwood fibers, and further having the at least one center ply of a multi-ply board formed from a reject fraction of softwood pulp or a mixture of a reject fraction of softwood pulp and hardwood pulp, said reject fraction resulting from the separation of the springwood fibers and thus being enriched with thick-walled summerwood fibers.

Landscapes

  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Claims (11)

  1. Verfahren zur Herstellung eines Produkts auf der Basis von lignocellulosehaltigem Material, wobei in dem Verfahren das Produkt aus Mehrfachlagen von Cellulosefasern zu einem Multiplexprodukt, umfassend Decklagen und mindestens eine mittige Schicht zwischen den Decklagen, gebildet wird, dadurch gekennzeichnet, daß die mindestens eine mittige Schicht des Multiplexprodukts mit dickwandigen Sommerholzfasern von Nadelholz angereichert ist.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Decklagen des Multiplexprodukts mit dünnwandigen und/oder bandförmigen Frühholzfasern von Nadelholz angereichert sind.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Fraktionen von Sommerholz und Frühholzfasern aus Nadelholzzellstoff, vorzugsweise Kiefernholzzellstoff, erhalten werden.
  4. Verfahren nach einem vorangehenden Anspruch, dadurch gekennzeichnet, daß das Multiplexprodukt Multiplexpappe, Karton oder Papier ist.
  5. Verfahren nach einem vorangehenden Anspruch, dadurch gekennzeichnet, daß die Decklagen des Multiplexprodukts, vorzugsweise Multiplexpappe, aus einer Nadelholzfraktion, angereichert mit dünnwandigen Frühholzfasern, gebildet wird und daß die mindestens eine mittige Schicht der Multiplexpappe aus der Spuckstofffraktion gebildet wird, die aus der Abtrennung von Frühholzfasern stammt, wobei die Spuckstofffraktion mit dickwandigen Sommerholzfasern angereichert ist.
  6. Verfahren nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Decklagen des Multiplexprodukts, vorzugsweise Multiplexpappe, aus einem Gemisch von Nadelholz- und Laubholzzellstoffen gebildet wird, wobei die Nadelholzfraktion mit dünnwandigen Frühholzfasern angereichert ist, und daß die mindestens eine mittige Schicht der Multiplexpappe aus einem Gemisch einer Spuckstofffraktion von Nadelholzzellstoff und Laubholzzellstoff gebildet wird, wobei die Spuckstofffraktion des Nadelholzzellstoffs aus der Abtrennung von Frühholzfasern stammt und somit mit dickwandigen Sommerholzfasern angereichert ist.
  7. Produkt auf der Basis von lignocellulosehaltigem Material, gebildet aus Mehrfachlagen von Cellulosefasern zu einem Multiplexprodukt, umfassend Decklagen und mindestens eine mittige Schicht zwischen den Decklagen gelagert, dadurch gekennzeichnet, daß die mindestens eine mittige Schicht des Multiplexprodukts mit dickwandigen Sommerholzfasern von Nadelholz angereichert ist.
  8. Produkt auf der Basis von lignocellulosehaltigem Material nach Anspruch 7, dadurch gekennzeichnet, daß die Decklagen des Multiplexprodukts mit dünnwandigen und/oder bandförmigen Frühholzfasern von Nadelholz angereichert sind.
  9. Produkt auf der Basis von lignocellulosehaltigem Material nach Anspruch 7-8, dadurch gekennzeichnet, daß das Multiplexprodukt Multiplexpappe, Karton oder Papier ist.
  10. Produkt auf der Basis von lignocellulosehaltigem Material nach Ansprüchen 7-9, dadurch gekennzeichnet, daß die Decklagen des Multiplexprodukts, vorzugsweise Multiplexpappe, aus einer Nadelholzfraktion, angereichert mit dünnwandigen Frühholzfasern, gebildet wird und daß die mindestens eine mittige Schicht der Multiplexpappe aus der Spuckstofffraktion gebildet wird, die aus der Abtrennung von Frühholzfasern stammt, wobei die Fraktion mit dickwandigen Sommerholzfasern angereichert ist.
  11. Produkt auf der Basis von lignocellulosehaltigem Material nach Ansprüchen 7-9, dadurch gekennzeichnet, daß die Decklagen des Multiplexprodukts, vorzugsweise Multiplexpappe, aus einem Gemisch von Nadelholz- und Laubholzzellstoffen gebildet wird, wobei die Nadelholzfraktion mit dünnwandigen Frühholzfasern angereichert ist, und daß die mindestens eine mittige Schicht der Multiplexpappe aus einem Gemisch einer Spuckstofffraktion von Nadelholzzellstoff und Laubholzzellstoff gebildet wird, wobei die Spuckstofffraktion des Nadelholzzellstoffs aus der Abtrennung von Frühholzfasern stammt und somit mit dickwandigen Sommerholzfasern angereichert ist.
EP94850175A 1993-11-17 1994-10-07 Produkt auf der Basis von lignozellulosehaltigen Materialien und Verfahren zu seiner Herstellung Expired - Lifetime EP0653516B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI935104A FI94653C (fi) 1993-11-17 1993-11-17 Lignoselluloosamateriaalinen tuote sekä menetelmä sen valmistamiseksi
FI935104 1993-11-17

Publications (2)

Publication Number Publication Date
EP0653516A1 EP0653516A1 (de) 1995-05-17
EP0653516B1 true EP0653516B1 (de) 1998-01-14

Family

ID=8538968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94850175A Expired - Lifetime EP0653516B1 (de) 1993-11-17 1994-10-07 Produkt auf der Basis von lignozellulosehaltigen Materialien und Verfahren zu seiner Herstellung

Country Status (7)

Country Link
EP (1) EP0653516B1 (de)
JP (1) JPH07189166A (de)
AT (1) ATE162246T1 (de)
DE (1) DE69407931T2 (de)
ES (1) ES2113078T3 (de)
FI (1) FI94653C (de)
NO (1) NO304238B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE513596C2 (sv) 1999-02-22 2000-10-09 Stora Kopparbergs Bergslags Ab Metod vid tillverkning av papper eller kartong

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1718096A (en) * 1926-06-28 1929-06-18 Ohio Boxboard Co Method of and apparatus for making paper, boxboard, and the like
SE459263B (sv) * 1987-10-16 1989-06-19 Sca Development Ab Saett att framstaella treskiktspapper
US5087324A (en) * 1990-10-31 1992-02-11 James River Corporation Of Virginia Paper towels having bulky inner layer
US5147505A (en) * 1991-05-24 1992-09-15 Union Camp Corporation Multilayer paper and method for the manufacturing thereof

Also Published As

Publication number Publication date
DE69407931T2 (de) 1998-08-20
NO944352L (no) 1995-05-18
EP0653516A1 (de) 1995-05-17
DE69407931D1 (de) 1998-02-19
FI94653C (fi) 1995-10-10
FI935104A0 (fi) 1993-11-17
NO944352D0 (no) 1994-11-15
ES2113078T3 (es) 1998-04-16
NO304238B1 (no) 1998-11-16
JPH07189166A (ja) 1995-07-25
ATE162246T1 (de) 1998-01-15
FI94653B (fi) 1995-06-30

Similar Documents

Publication Publication Date Title
EP0660900B1 (de) Mehrlagiges papier und verfahren zu seiner herstellung
US11781270B2 (en) Methods of making multi-ply fibrous sheets
EP2900869B1 (de) Hybridfaserzusammensetzungen und verwendungen in einer wellpappeverpackung
AU2016285836B2 (en) Wood-free fiber compositions and uses in paperboard packaging
US11926128B2 (en) Light weight linerboard for corrugated board
EP3814137B1 (de) Lage aus einem deckenpapier und ein leichtes deckenpapier für wellpappe
CA2801905A1 (en) High yield and enhanced performance fiber
EP3896222B1 (de) Mehrschichtige faserstoffbahn, verfahren zur herstellung einer mehrschichtigen faserstoffbahn und verwendung von mechanischem zellstoff
CA2046499A1 (en) Chemi-mechanical liner board
FI79575B (fi) Sammansatt kartongmaterial.
EP3265609B1 (de) Faserstoffmischung zur herstellung von kartonprodukten mit hohen festigkeit in die z-richtung
WO2008003343A1 (en) Method of making an absorbent structure as a multi layer paper, especially a tissue paper
JP2024519009A (ja) 段ボールにおける使用のための多層の容器用板紙
US12331463B2 (en) Multi-ply paper products having a first stratified base sheet and a second stratified base sheet
EP0653516A1 (de) Produkt auf der Basis von lignozellulosehaltigen Materialien und Verfahren zu seiner Herstellung
US12546064B2 (en) Multiply containerboard for use in corrugated board
JPH08109591A (ja) 強度を向上した紙および板紙及びその製造方法
WO2022243822A1 (en) Multi-ply liner for use in corrugated board
US3406088A (en) Method of forming multi-ply board with plies of different consistencies
US20250019903A1 (en) Multi-ply paper containing used paper fibers and additional fibers
WO2026064809A1 (en) Kraftliner paper and method for its production
SU874824A1 (ru) Волокниста масса дл изготовлени картона-основы,используемого в качестве гладкого сло гофрированного картона

Legal Events

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

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI PT SE

17P Request for examination filed

Effective date: 19951020

17Q First examination report despatched

Effective date: 19961007

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980114

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980114

REF Corresponds to:

Ref document number: 162246

Country of ref document: AT

Date of ref document: 19980115

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 69407931

Country of ref document: DE

Date of ref document: 19980219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980414

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2113078

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20091014

Year of fee payment: 16

Ref country code: ES

Payment date: 20091023

Year of fee payment: 16

Ref country code: DE

Payment date: 20091026

Year of fee payment: 16

Ref country code: AT

Payment date: 20091015

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20091029

Year of fee payment: 16

Ref country code: GB

Payment date: 20091022

Year of fee payment: 16

Ref country code: FR

Payment date: 20091110

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20101007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101102

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110630

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69407931

Country of ref document: DE

Effective date: 20110502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101007

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101008

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20111118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110502