CA2387739A1 - Uncoated paper and board products - Google Patents

Uncoated paper and board products Download PDF

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Publication number
CA2387739A1
CA2387739A1 CA002387739A CA2387739A CA2387739A1 CA 2387739 A1 CA2387739 A1 CA 2387739A1 CA 002387739 A CA002387739 A CA 002387739A CA 2387739 A CA2387739 A CA 2387739A CA 2387739 A1 CA2387739 A1 CA 2387739A1
Authority
CA
Canada
Prior art keywords
board
paper
top layer
uncoated paper
uncoated
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.)
Granted
Application number
CA002387739A
Other languages
French (fr)
Other versions
CA2387739C (en
Inventor
Sven Hakansson
Magnus Wikstrom
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.)
Korsnas AB
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20417406&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2387739(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2387739A1 publication Critical patent/CA2387739A1/en
Application granted granted Critical
Publication of CA2387739C publication Critical patent/CA2387739C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • 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

Abstract

A new quality of uncoated paper and board products, such as liquid board or white top liner, of one or more layers with a top layer of bleached chemical pulp is described. The top layer surface has a gloss value of 20-50 %, a coefficient of gloss variation in the wavelength region 3-30 mm of less than 5 %, and a surface roughness (PPS-10) of 2 - 5 .mu.m. The good printability of the disclosed products makes them useful in the production of packages. The disclosed products are obtainable by a paper making process wherein the calendering of the paper or board is performed with an extended soft nip calender which has a heated, e.g. internally induction heated, roll with a temperature at the surface of 250 to 350 ~C, and the pressure against the paper board of 5-40 MPa. The calendering operation is optionally preceded by application of steam onto the top of the paper or board web.

Claims (8)

1. Uncoated paper or board product of one or more layers with a top layer of bleached chemical pulp characterized in that the top layer surface has a gloss value of 20 - 50 % measured according to Tappi T480, a coefficient of gloss variation in the wavelength region 3-30 mm of less than 5 %, and a surface roughness (PPS-10) of 2 - 5 µm measured according to ISO 8791-4.
2. Uncoated paper or board product according to claim 1, wherein the surface roughness (PPS-10) is 3 - 5 µm measured according to ISO 8791-4.
3. Uncoated paper or board product according to claim 1 or 2, wherein the product is a liquid board.
4. Uncoated paper or board product according to claim 1 or 2, wherein the product is a white top liner.
5. Use of a paper or board product according to any one of claims 1 - 4 in the production of packages.
6. In a process of producing an uncoated paper or board product according to claim 1, the calendering of the paper or board is performed with an extended soft nip calender which has a heated roll pressing against the top layer of the paper or board and has a surface temperature of 250 to 350 °C, and the pressure against the paper board is adjusted to 5 -40 MPa depending on the line load, the properties of the calender belt and the length of the extended soft nip.
7. In a process according to claim 6, the heated roll is an internally induction heated metal roll.
8. In a process according to claim 6 or 7, steam is applied to the paper or board surface immediately before the nip, on the side of the web that will be contacted by the heated roll.
CA2387739A 1999-10-19 2000-10-17 Uncoated paper and board products Expired - Lifetime CA2387739C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9903764-0 1999-10-19
SE9903764A SE516821C2 (en) 1999-10-19 1999-10-19 Uncoated paper or board product and process for making it
PCT/SE2000/002006 WO2001029316A1 (en) 1999-10-19 2000-10-17 Uncoated paper and board products

Publications (2)

Publication Number Publication Date
CA2387739A1 true CA2387739A1 (en) 2001-04-26
CA2387739C CA2387739C (en) 2010-07-20

Family

ID=20417406

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2387739A Expired - Lifetime CA2387739C (en) 1999-10-19 2000-10-17 Uncoated paper and board products

Country Status (12)

Country Link
EP (1) EP1252392B1 (en)
JP (1) JP5068407B2 (en)
CN (1) CN1246528C (en)
AU (1) AU1182901A (en)
BR (1) BR0014845B1 (en)
CA (1) CA2387739C (en)
DK (1) DK1252392T3 (en)
ES (1) ES2393100T3 (en)
PT (1) PT1252392E (en)
SE (1) SE516821C2 (en)
WO (1) WO2001029316A1 (en)
ZA (1) ZA200202853B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0102941D0 (en) * 2001-09-05 2001-09-05 Korsnaes Ab Publ Uncoated paperboard for packages
JP2005516134A (en) * 2002-01-29 2005-06-02 メッツォ ペーパー インコーポレイテッド Coated or uncoated fiber web processing equipment
DE10228134A1 (en) * 2002-06-24 2004-01-22 Voith Paper Patent Gmbh Machine for producing and treating a material web with an application device having at least one contactless application unit
DE10228117A1 (en) * 2002-06-24 2004-01-22 Voith Paper Patent Gmbh Machine for treating a material web, preferably made of paper and cardboard, and possibly for producing the material web beforehand, with a contactless application device and a material web smoothing device
JP4886180B2 (en) * 2004-06-21 2012-02-29 大王製紙株式会社 Information recording paper
WO2006039118A1 (en) * 2004-09-29 2006-04-13 Meadwestvaco Corporation White top paperboard
FI119251B (en) * 2005-05-25 2008-09-15 Metso Paper Inc A method and apparatus for producing a high consistency web of fibrous web
US8349443B2 (en) 2006-02-23 2013-01-08 Meadwestvaco Corporation Method for treating a substrate
GB2449922A (en) * 2007-06-08 2008-12-10 Arjowiggins Licensing Sas Base paper

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2930776B2 (en) * 1991-06-14 1999-08-03 日本製紙株式会社 Method for producing gravure paper and gravure paper obtained by the method
JP3058482B2 (en) * 1991-06-14 2000-07-04 日本製紙株式会社 Manufacturing method of continuous slip paper and continuous slip paper
US5400707A (en) * 1992-10-09 1995-03-28 Champion International Corporation Apparatus for finishing a continuous sheet of paper
FI95061C (en) * 1993-03-08 1995-12-11 Valmet Paper Machinery Inc Method of calendering paper web and calender for application of the method
SE502960C2 (en) * 1994-06-15 1996-02-26 Nordiskafilt Ab Albany Arrangement for calendaring
SE9500949L (en) * 1995-03-16 1996-07-08 Korsnaes Ab Coated cardboard for shaped articles, production line for production of coated cardboard, method for making coated cardboard and ways to reduce the cracking propensity when folding a coated cardboard
JP3575116B2 (en) * 1995-06-30 2004-10-13 日本製紙株式会社 Printing paper and its manufacturing method
FI102305B (en) * 1997-04-02 1998-11-13 Valmet Corp Calendaring process and calendar for application of the process
FI115985B (en) * 1997-10-14 2005-08-31 Metso Paper Inc Calender with an extended nip
WO1999023305A1 (en) * 1997-10-31 1999-05-14 Beloit Technologies, Inc. Soft nip calender
JP3931423B2 (en) * 1998-03-30 2007-06-13 日本製紙株式会社 Test method and apparatus for calendering sheet-like material
JP2000073291A (en) * 1998-08-20 2000-03-07 Nippon Paper Industries Co Ltd Calendering treatment for paper and apparatus therefor

Also Published As

Publication number Publication date
PT1252392E (en) 2012-11-27
CN1246528C (en) 2006-03-22
ES2393100T3 (en) 2012-12-18
EP1252392A1 (en) 2002-10-30
SE9903764L (en) 2001-04-20
WO2001029316A1 (en) 2001-04-26
BR0014845B1 (en) 2011-01-25
AU1182901A (en) 2001-04-30
CA2387739C (en) 2010-07-20
SE516821C2 (en) 2002-03-05
CN1387599A (en) 2002-12-25
BR0014845A (en) 2002-07-02
EP1252392B1 (en) 2012-08-15
DK1252392T3 (en) 2012-10-22
JP2003512543A (en) 2003-04-02
SE9903764D0 (en) 1999-10-19
JP5068407B2 (en) 2012-11-07
ZA200202853B (en) 2003-06-25

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Effective date: 20201019