GB532360A - Improvements in the manufacture of sheets or bands from highly viscous cellulose solutions - Google Patents

Improvements in the manufacture of sheets or bands from highly viscous cellulose solutions

Info

Publication number
GB532360A
GB532360A GB24597/39A GB2459739A GB532360A GB 532360 A GB532360 A GB 532360A GB 24597/39 A GB24597/39 A GB 24597/39A GB 2459739 A GB2459739 A GB 2459739A GB 532360 A GB532360 A GB 532360A
Authority
GB
United Kingdom
Prior art keywords
solution
extrusion
heated
cellulose
slot
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
GB24597/39A
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Publication of GB532360A publication Critical patent/GB532360A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2201/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as reinforcement
    • B29K2201/08—Cellulose derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/02—Cellulose; Modified cellulose

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

532,360. Films &c. KALLE & CO., AKT.-GES. Aug. 26, 1939, No. 24597. Convention date, Aug. 29, 1938. [Class 2 (ii)] A highly viscous pasty solution of cellulose e.g. a solution in zinc chloride, sulphuric acid, or phosphoric acid, is extruded through a slot so as to form a foil or band, and to facilitate the extrusion the solution is heated superficially while it passes through the extrusion slot. Preferably the cellulosic solution is supplied to the'extrusion device at a low temperature e.g. 10‹C. The lips of the extrusion device may be heated to a temperature of 30‹-150‹C. or, in the case of high speed extrusion, they may be at 200-300‹C. In an example, a solution of cellulose in sulphuric acid of 60.3-65 per cent strength at 0‹-10‹C. and containing 7-8 per cent of cellulose is extruded under pressure through the slot of an extrusion device, the lips of which are heated by warm water to a temperature of 35‹-40‹C. The rate of extrusion is such that the film-forming mass is only superficially heated. The mass issues into a coagulating bath containing dilute sulphuric acid or strong ammonium sulphate solution at a temperature below 10‹C. A smooth surface film of good tensile strength is obtained.
GB24597/39A 1938-08-29 1939-08-26 Improvements in the manufacture of sheets or bands from highly viscous cellulose solutions Expired GB532360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE532360X 1938-08-29

Publications (1)

Publication Number Publication Date
GB532360A true GB532360A (en) 1941-01-22

Family

ID=6555407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24597/39A Expired GB532360A (en) 1938-08-29 1939-08-26 Improvements in the manufacture of sheets or bands from highly viscous cellulose solutions

Country Status (1)

Country Link
GB (1) GB532360A (en)

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