FR2149605A5 - Screw press - for pulp in continuous cellulose triacetate prodn with sprung flap and liquid collection - Google Patents

Screw press - for pulp in continuous cellulose triacetate prodn with sprung flap and liquid collection

Info

Publication number
FR2149605A5
FR2149605A5 FR7129759A FR7129759A FR2149605A5 FR 2149605 A5 FR2149605 A5 FR 2149605A5 FR 7129759 A FR7129759 A FR 7129759A FR 7129759 A FR7129759 A FR 7129759A FR 2149605 A5 FR2149605 A5 FR 2149605A5
Authority
FR
France
Prior art keywords
prodn
screw press
flap
pulp
cellulose triacetate
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
FR7129759A
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.)
PK
PLASTPOLIMER
Original Assignee
PK
PLASTPOLIMER
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 PK, PLASTPOLIMER filed Critical PK
Priority to FR7129759A priority Critical patent/FR2149605A5/en
Application granted granted Critical
Publication of FR2149605A5 publication Critical patent/FR2149605A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B17/00—Apparatus for esterification or etherification of cellulose
    • C08B17/02—Apparatus for esterification or etherification of cellulose for making organic esters of cellulose

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

At the outlet end of the screw press, a flap is sprung against the direction of material travel so that the pressure of the mass causes the flap to move back to expose an outlet aperture. The pressure forces any residual liquid to pass through a perforated plate into a collection chamber, while the pulpy mass passes out of the press. The purpose is to provide a liquid extraction system while the mass passes from stage to stage in a continuous prodn. cycle, with the minimum loss of fibre material and safe for operators.
FR7129759A 1971-08-13 1971-08-13 Screw press - for pulp in continuous cellulose triacetate prodn with sprung flap and liquid collection Expired FR2149605A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7129759A FR2149605A5 (en) 1971-08-13 1971-08-13 Screw press - for pulp in continuous cellulose triacetate prodn with sprung flap and liquid collection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7129759A FR2149605A5 (en) 1971-08-13 1971-08-13 Screw press - for pulp in continuous cellulose triacetate prodn with sprung flap and liquid collection

Publications (1)

Publication Number Publication Date
FR2149605A5 true FR2149605A5 (en) 1973-03-30

Family

ID=9081878

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7129759A Expired FR2149605A5 (en) 1971-08-13 1971-08-13 Screw press - for pulp in continuous cellulose triacetate prodn with sprung flap and liquid collection

Country Status (1)

Country Link
FR (1) FR2149605A5 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse