FR2097383A5 - Lignocellulosic pulping process - Google Patents

Lignocellulosic pulping process

Info

Publication number
FR2097383A5
FR2097383A5 FR7024823A FR7024823A FR2097383A5 FR 2097383 A5 FR2097383 A5 FR 2097383A5 FR 7024823 A FR7024823 A FR 7024823A FR 7024823 A FR7024823 A FR 7024823A FR 2097383 A5 FR2097383 A5 FR 2097383A5
Authority
FR
France
Prior art keywords
chips
lignocellulose material
volatile
deformable
mass
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
Application number
FR7024823A
Other languages
French (fr)
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.)
Kimberly Clark Corp
Original Assignee
Kimberly Clark Corp
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 Kimberly Clark Corp filed Critical Kimberly Clark Corp
Priority to FR7024823A priority Critical patent/FR2097383A5/en
Application granted granted Critical
Publication of FR2097383A5 publication Critical patent/FR2097383A5/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/36—Explosive disintegration by sudden pressure reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

Lignocellulosic pulping process Method of manufacturing pulp comprises impregnating a mass of chips of lignocellulose material with a volatile nitrogeneous swelling agent for the lignocellulose material so that the volatile agent is present to at least about the same extent by wt as the water is present in the lignocellulose material, heating the impregnated chips within a closed space under pressure in the absence of suspending liquid to a temp. sufficient to plasticise the lignocellulose material so that the chips are deformable, and suddenly releasing the pressure on the mass of plasticised deformable chips by opening a relatively restricted outlet from the closed space to a zone of lower pressure to cause ejection of the impregnated chips from the space, then explosive volatile agent removal and accompanying deformation and disintegration of the chips to a fibrous condition in which the fibres are bleachable, flexible, kinked, twisted and curled and which enables mechanical and chemical defibration of the exploded material.
FR7024823A 1970-07-03 1970-07-03 Lignocellulosic pulping process Expired FR2097383A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7024823A FR2097383A5 (en) 1970-07-03 1970-07-03 Lignocellulosic pulping process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7024823A FR2097383A5 (en) 1970-07-03 1970-07-03 Lignocellulosic pulping process

Publications (1)

Publication Number Publication Date
FR2097383A5 true FR2097383A5 (en) 1972-03-03

Family

ID=9058259

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7024823A Expired FR2097383A5 (en) 1970-07-03 1970-07-03 Lignocellulosic pulping process

Country Status (1)

Country Link
FR (1) FR2097383A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2612828A1 (en) * 1987-03-24 1988-09-30 Louche Yves Use of micronised and dried wood as agent for improving the characteristics of paper pulps, papers, cardboards and wood particle boards

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2612828A1 (en) * 1987-03-24 1988-09-30 Louche Yves Use of micronised and dried wood as agent for improving the characteristics of paper pulps, papers, cardboards and wood particle boards

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Legal Events

Date Code Title Description
ST Notification of lapse