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GB473222A - Improvements in and relating to cellulosic sheets and films and methods for producing the same - Google Patents

Improvements in and relating to cellulosic sheets and films and methods for producing the same

Info

Publication number
GB473222A
GB473222A GB33423/36A GB3342336A GB473222A GB 473222 A GB473222 A GB 473222A GB 33423/36 A GB33423/36 A GB 33423/36A GB 3342336 A GB3342336 A GB 3342336A GB 473222 A GB473222 A GB 473222A
Authority
GB
United Kingdom
Prior art keywords
film
viscose
metal
coagulating
bath
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
GB33423/36A
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.)
British Cellophane Ltd
Original Assignee
British Cellophane Ltd
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 British Cellophane Ltd filed Critical British Cellophane Ltd
Publication of GB473222A publication Critical patent/GB473222A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08L1/08—Cellulose derivatives
    • C08L1/22—Cellulose xanthate
    • C08L1/24—Viscose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/08—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
    • 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
    • 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
    • C08J2301/08—Cellulose derivatives
    • C08J2301/22—Cellulose xanthate
    • C08J2301/24—Viscose
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/73—Processes of stretching

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Artificial Filaments (AREA)

Abstract

Viscose is coagulated as a continuous film of a water-insoluble metal cellulose xanthate and the film is stretched transversely and regenerated. For example, a liquid sheet of viscose is treated with a coagulating non-regenerating <PICT:0473222/IV/1> bath containing zinc, aluminium or lead salts, or a film is first formed from viscose and then converted to the water-insoluble metal xanthate, before stretching and regeneration. Shrinkage of the regenerated cellulose film is inhibited in the longitudinal direction. A small amount of a weak acid or of an acid salt may be added to the coagulating or metal bath to prevent precipitation of the metal hydroxides. The metal bath also may contain a small quantity of another salt such as ammonium chloride, sodium chloride or sodium sulphate. Examples of suitable baths are given. The film may be stretched transversely by passing it between bowed expander bars 21 which include non-rotatable parallel shafts 23 and a plurality of interlocking rollers 22 which are rotatably mounted on the shafts 23 and are covered by a smooth yieldable material 24 such as rubber.
GB33423/36A 1935-12-06 1936-12-05 Improvements in and relating to cellulosic sheets and films and methods for producing the same Expired GB473222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53265A US2144356A (en) 1935-12-06 1935-12-06 Method for producing a cellulosic structure

Publications (1)

Publication Number Publication Date
GB473222A true GB473222A (en) 1937-10-08

Family

ID=21983015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33423/36A Expired GB473222A (en) 1935-12-06 1936-12-05 Improvements in and relating to cellulosic sheets and films and methods for producing the same

Country Status (2)

Country Link
US (1) US2144356A (en)
GB (1) GB473222A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201826A (en) * 1961-12-07 1965-08-24 Bruckner Gernot Apparatus for stretching strips of plastic material

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454515A (en) * 1938-10-29 1948-11-23 Polaroid Corp Light-polarizing sheet of molecularly oriented transparent linear high polymer dyed with dichroic substance and process of manufacture
US2445333A (en) * 1944-11-23 1948-07-20 Du Pont Process of making regenerated cellulose films
US2698967A (en) * 1951-01-19 1955-01-11 American Viscose Corp Production of regenerated cellulose films and sheets
US2767427A (en) * 1955-04-07 1956-10-23 Du Pont Tubular film stretcher
US2962765A (en) * 1956-03-27 1960-12-06 Bemberg Ag Improved production of regenerated cellulose film by the cuprammonium process
US2991510A (en) * 1958-08-25 1961-07-11 Du Pont Regenerated cellulose film and process
US3048895A (en) * 1959-08-20 1962-08-14 Phillips Petroleum Co Process for producing biaxially oriented plastic film
US5522203A (en) * 1990-10-02 1996-06-04 Lantech, Inc. Biaxial stretch wrapping
US5161349A (en) * 1990-10-02 1992-11-10 Lantech, Inc. Biaxial stretch wrapping

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201826A (en) * 1961-12-07 1965-08-24 Bruckner Gernot Apparatus for stretching strips of plastic material

Also Published As

Publication number Publication date
US2144356A (en) 1939-01-17

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