SE9902424D0 - Liner and process for making it - Google Patents

Liner and process for making it

Info

Publication number
SE9902424D0
SE9902424D0 SE9902424A SE9902424A SE9902424D0 SE 9902424 D0 SE9902424 D0 SE 9902424D0 SE 9902424 A SE9902424 A SE 9902424A SE 9902424 A SE9902424 A SE 9902424A SE 9902424 D0 SE9902424 D0 SE 9902424D0
Authority
SE
Sweden
Prior art keywords
liner
base layer
oxygen
basis weight
paper pulp
Prior art date
Application number
SE9902424A
Other languages
Swedish (sv)
Other versions
SE521722C2 (en
SE9902424L (en
Inventor
Curt Lindstroem
Original Assignee
Assidomaen Ab
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 Assidomaen Ab filed Critical Assidomaen Ab
Priority to SE9902424A priority Critical patent/SE521722C2/en
Publication of SE9902424D0 publication Critical patent/SE9902424D0/en
Publication of SE9902424L publication Critical patent/SE9902424L/en
Publication of SE521722C2 publication Critical patent/SE521722C2/en

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
    • D21F11/12—Making corrugated paper or board
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • 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
    • D21H27/30—Multi-ply
    • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Paper (AREA)

Abstract

The liner has a low basis weight top layer, and its base layer comprises recycled paper pulp delignified and bleached in the presence of sodium carbonate, using oxygen or a combination thereof with hydrogen peroxide. A multi-layer kraft liner comprises at least one base layer and at least one top layer, giving a total basis weight of 60-300 g/m2. More than 50 wt.% of the base layer comprises recycled paper pulp, preferably from recycled cardboard, and the base layer pulp is delignified to a degree of 20-60 % and bleached to a brightness greater than 28 % ISO. Delignification and bleaching is carried out using oxygen or a combination of oxygen and hydrogen peroxide, in the presence of sodium carbonate. The top layer comprises a paper pulp with a brightness greater than 40 % ISO and a maximum basis weight of 60 g/m2. An Independent claim is also included for the method of making the liner.
SE9902424A 1999-06-24 1999-06-24 Multi layer liner, comprises low basis weight top layer and base layer comprising recycled paper pulp delignified and bleached in the presence of sodium carbonate SE521722C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9902424A SE521722C2 (en) 1999-06-24 1999-06-24 Multi layer liner, comprises low basis weight top layer and base layer comprising recycled paper pulp delignified and bleached in the presence of sodium carbonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9902424A SE521722C2 (en) 1999-06-24 1999-06-24 Multi layer liner, comprises low basis weight top layer and base layer comprising recycled paper pulp delignified and bleached in the presence of sodium carbonate

Publications (3)

Publication Number Publication Date
SE9902424D0 true SE9902424D0 (en) 1999-06-24
SE9902424L SE9902424L (en) 2000-12-25
SE521722C2 SE521722C2 (en) 2003-12-02

Family

ID=20416242

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9902424A SE521722C2 (en) 1999-06-24 1999-06-24 Multi layer liner, comprises low basis weight top layer and base layer comprising recycled paper pulp delignified and bleached in the presence of sodium carbonate

Country Status (1)

Country Link
SE (1) SE521722C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3870755B1 (en) * 2018-10-24 2024-04-24 UPM-Kymmene Corporation Release liner
AT526619A1 (en) * 2022-11-08 2024-05-15 Mondi Ag Process for producing a printable liner web for packaging and printable liner for packaging
AT526620A1 (en) * 2022-11-08 2024-05-15 Mondi Ag Process for producing a printable liner web for packaging and printable liner for packaging

Also Published As

Publication number Publication date
SE521722C2 (en) 2003-12-02
SE9902424L (en) 2000-12-25

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Legal Events

Date Code Title Description
NUG Patent has lapsed