[go: up one dir, main page]

BR8903649A - PROCESS FOR IMPROVING THE MECHANICAL PULP DRAINAGE CAPACITY - Google Patents

PROCESS FOR IMPROVING THE MECHANICAL PULP DRAINAGE CAPACITY

Info

Publication number
BR8903649A
BR8903649A BR898903649A BR8903649A BR8903649A BR 8903649 A BR8903649 A BR 8903649A BR 898903649 A BR898903649 A BR 898903649A BR 8903649 A BR8903649 A BR 8903649A BR 8903649 A BR8903649 A BR 8903649A
Authority
BR
Brazil
Prior art keywords
pulp
improving
mechanical pulp
enzyme
dissolving
Prior art date
Application number
BR898903649A
Other languages
Portuguese (pt)
Inventor
Sakari Karsila
Iikka Kruus
Outi Puuppo
Original Assignee
Cultor 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 Cultor Oy filed Critical Cultor Oy
Publication of BR8903649A publication Critical patent/BR8903649A/en

Links

Classifications

    • 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
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Paper (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Materials For Medical Uses (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Non-Adjustable Resistors (AREA)
  • Noodles (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

The invention relates to a method for improving the drainability of mechanical pulp or pulp mainly containing mechanical pulp by means of enzyme treatment by adding to the pulp at least one hemicellulose-dissolving enzyme or an enzyme preparation containing at least one hemicellulose-dissolving enzyme and being substantially free from cellulose-dissolving enzymes. The enzyme treatment according to the invention not only improve the drainability of the pulp but also retains the strength properties of the pulp since no cellulose-dissolving enzymes are used.
BR898903649A 1988-07-22 1989-07-24 PROCESS FOR IMPROVING THE MECHANICAL PULP DRAINAGE CAPACITY BR8903649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI883491A FI81394C (en) 1988-07-22 1988-07-22 Process for treating pulp with enzymes

Publications (1)

Publication Number Publication Date
BR8903649A true BR8903649A (en) 1990-03-13

Family

ID=8526856

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898903649A BR8903649A (en) 1988-07-22 1989-07-24 PROCESS FOR IMPROVING THE MECHANICAL PULP DRAINAGE CAPACITY

Country Status (9)

Country Link
EP (1) EP0351655B1 (en)
AT (1) ATE82781T1 (en)
BR (1) BR8903649A (en)
CA (1) CA1339605C (en)
DE (1) DE68903608T2 (en)
ES (1) ES2037341T3 (en)
FI (1) FI81394C (en)
GR (1) GR3006466T3 (en)
NZ (1) NZ229811A (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604198B1 (en) * 1986-09-22 1989-07-07 Du Pin Cellulose PROCESS FOR TREATING A PAPER PULP WITH AN ENZYMATIC SOLUTION.
FI87372C (en) * 1989-03-30 1992-12-28 Genencor Int Europ Process for making fluff pulp with improved tearability
FI92414B (en) * 1989-11-27 1994-07-29 Enso Gutzeit Oy Method for making pulp
DK80390D0 (en) * 1990-03-29 1990-03-29 Novo Nordisk As
US5837515A (en) * 1990-05-16 1998-11-17 Alko-Yhtiot Oy Enzyme preparations and methods for their production
GB9018426D0 (en) * 1990-08-22 1990-10-03 Sandoz Ltd Improvements in or relating to novel compounds
EP0486125A1 (en) * 1990-11-13 1992-05-20 JAPAN PULP & PAPER RESEARCH INSTITUTE, INC. Lignocellulolytic composition, process of producing the same and use of the same
US5616215A (en) * 1991-04-19 1997-04-01 Novo Nordisk A/S Method of making paper from pulp treated with lipase and an aluminum salt
US5169497A (en) * 1991-10-07 1992-12-08 Nalco Chemical Company Application of enzymes and flocculants for enhancing the freeness of paper making pulp
FI92500C (en) * 1993-03-03 1994-11-25 Valtion Teknillinen Process for producing mechanical pulp
US5935836A (en) * 1994-07-29 1999-08-10 Rohm Enzyme Finland Oy Actinomadura xylanase sequences and methods of use
US5871730A (en) * 1994-07-29 1999-02-16 Universite De Sherbrooke Thermostable xylanase DNA, protein and methods of use
US6300114B1 (en) 1994-07-29 2001-10-09 Rohm Enzyme Finland Oy Sequences of xylanase and xylanase expression vectors
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
US5770012A (en) * 1994-11-18 1998-06-23 P. H. Glatfelter Co. Process for treating paper machine stock containing bleached hardwood pulp with an enzyme mixture to reduce vessel element picking
US5725732A (en) * 1994-11-18 1998-03-10 P. H. Glatfelter Company Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking
GB2296513B (en) * 1994-12-24 1998-07-29 Ciba Geigy Ag Paper treatment
US5961735A (en) * 1995-06-21 1999-10-05 North Carolina State University Method of cleaning papermaking felts with enzymes
WO1998006892A1 (en) * 1996-08-16 1998-02-19 International Paper Company Enzymatic freeness enhancement
US6939437B1 (en) 1999-11-19 2005-09-06 Buckman Laboratories International, Inc. Paper making processes using enzyme and polymer combinations
SE525872C2 (en) * 2002-09-06 2005-05-17 Stora Enso Ab Method of producing mechanical pulp with reduced energy consumption
WO2004101889A2 (en) * 2003-05-06 2004-11-25 Novozymes North America, Inc. Use of hemicellulase composition in mechanical pulp production
CN104631178B (en) * 2015-02-09 2016-08-24 绍兴文理学院 A kind of deep purification method of raw cellulose
CN104631176B (en) * 2015-02-09 2016-06-01 绍兴文理学院 The preparation method of a kind of jute fibre element
CN104631175B (en) * 2015-02-09 2016-06-01 绍兴文理学院 The preparation method of a kind of short route jute fibre element

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557894B1 (en) * 1984-01-10 1986-12-12 Centre Tech Ind Papier PROCESS FOR THE TREATMENT OF PAPER PULP WITH A FIBRILLATION ENZYMATIC SOLUTION AND PULPES THUS PROCESSED.
FR2604198B1 (en) * 1986-09-22 1989-07-07 Du Pin Cellulose PROCESS FOR TREATING A PAPER PULP WITH AN ENZYMATIC SOLUTION.

Also Published As

Publication number Publication date
CA1339605C (en) 1997-12-30
EP0351655A1 (en) 1990-01-24
FI883491A0 (en) 1988-07-22
FI81394B (en) 1990-06-29
DE68903608D1 (en) 1993-01-07
EP0351655B1 (en) 1992-11-25
NZ229811A (en) 1991-03-26
ES2037341T3 (en) 1993-06-16
FI883491L (en) 1990-01-23
DE68903608T2 (en) 1993-04-01
FI81394C (en) 1993-07-20
GR3006466T3 (en) 1993-06-21
ATE82781T1 (en) 1992-12-15

Similar Documents

Publication Publication Date Title
BR8903649A (en) PROCESS FOR IMPROVING THE MECHANICAL PULP DRAINAGE CAPACITY
FI881261A7 (en) An improved method of making pulp for papermaking.
NO873565L (en) PROCEDURE FOR TREATING PAPER PASS WITH AN ENZYMATIC SOLUTION.
BR9206637A (en) Xylanase process for its preparation and process for the treatment of lignocellulosic pulp
ATE102667T1 (en) PROCESS FOR PRODUCTION OF MECHANICAL PULP AND PAPER CONTAINING SUCH PULP.
BR9007975A (en) PREPARATION THAT PRESENTS ENZYMATIC ACTIVITY PROCESS TO PRODUCE THE SAME, ISOLATED BACILLUS STEARO THERMOPHILUS, AND PROCESS FOR THE TREATMENT OF WOOD PULP
DK0487557T3 (en) Improving pulp bleaching
DE69205847D1 (en) Enzymatic treatment of lignocellulosic pulp.
FI871088L (en) NEW ENZYMER FOER UPPSPJAELKNING AV LIGNIN.
FI854843A0 (en) FOERFARANDE FOER PRODUCERING AV LIGNINOLYTISKT ENSYM MED HJAELP AV KULTUR AV MICRO-ORGANISM AV STAMMEN PHANEROCHAETE CHRYSOSPORIUM.
ATA254787A (en) REFINER FOR TREATING FIBROUS SUSPENSION FOR PAPER PRODUCTION
BR8606775A (en) TREATMENT PROCESS AND TO TARGET PULP KRAFT
DE69033455D1 (en) Pre-coagulation process for the introduction of organic fibrous fillers in SBR
NO178201C (en) Lignin-degrading enzymatic preparation for the treatment of wood pulp and method for bleaching of pulp
DE3888228D1 (en) Bacterial cellulose for the surface treatment of fiber webs.
EP0373108A3 (en) Process for bleaching pulp
FI871161A7 (en) Oxy-alkali extraction method for the production of bleached pulp.
ATE102551T1 (en) BACTERIAL CELLULOSE FOR THE SURFACE TREATMENT OF FIBER WEB.

Legal Events

Date Code Title Description
FF Decision: intention to grant
KD Notifcation of receipt (letter patent)
FG Letter patent granted
KD1 Payment of complementary fee requested
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 24/07/2004