GB548248A - Improvements in or relating to the manufacture of transparent papers and artificial fibres - Google Patents

Improvements in or relating to the manufacture of transparent papers and artificial fibres

Info

Publication number
GB548248A
GB548248A GB276441A GB276441A GB548248A GB 548248 A GB548248 A GB 548248A GB 276441 A GB276441 A GB 276441A GB 276441 A GB276441 A GB 276441A GB 548248 A GB548248 A GB 548248A
Authority
GB
United Kingdom
Prior art keywords
film
passes
sodium sulphate
sulphuric acid
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
GB276441A
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.)
CEFOIL Ltd
Original Assignee
CEFOIL 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 CEFOIL Ltd filed Critical CEFOIL Ltd
Priority to GB276441A priority Critical patent/GB548248A/en
Publication of GB548248A publication Critical patent/GB548248A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/04—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of alginates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Artificial Filaments (AREA)

Abstract

548,248. Artificial filaments, films, &c. CEFOIL, Ltd., and ROSE, R. C. Feb. 28, 1941, No. 2764. Drawings to Specification. [Class 2 (ii)] A solution of a soluble alginate is formed into filaments or films and coagulated in a bath containing in addition to an acid a soluble salt which facilitates the coagulation of a strong film or fibre, but does not itself produce an insoluble alginate. The salt is used in a concentration adequate to cause substantial strengthening of the film. 'An alkali salt of the acid employed may be used, e.g. sodium sulphate with sulphuric acid. Sodium sulphate may be used in a concentration of more than 10 per cent anhydrous salt, and the sulphuric acid may be of 5 per cent strength. Concentrations of sodium sulphate up to saturation may be used. The temperature of the coagulation bath is preferably fairly low, e.g. 20‹C. In an example, a solution of alginate passes from a feed hopper with adjustable slot into a coagulating bath containing dilute sulphuric acid and sodium sulphate. The film thus formed, passes into another bath containing dilute sulphuric acid, and then into a washing bath of water. From the water bath the film passes into a bath containing an aqueous solution of glycerine. The film then passes round heated drying cylinders which reduce the free moisture content to not more than 30 per cent. The film passes to a conditioning chamber and thence to a wind-up roller. The film may be produced at a speed of 30 feet per minute. Specifications 21586/12, [Class 2 (iii)], and 530,889 are referred to.
GB276441A 1941-02-28 1941-02-28 Improvements in or relating to the manufacture of transparent papers and artificial fibres Expired GB548248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB276441A GB548248A (en) 1941-02-28 1941-02-28 Improvements in or relating to the manufacture of transparent papers and artificial fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB276441A GB548248A (en) 1941-02-28 1941-02-28 Improvements in or relating to the manufacture of transparent papers and artificial fibres

Publications (1)

Publication Number Publication Date
GB548248A true GB548248A (en) 1942-10-02

Family

ID=9745452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB276441A Expired GB548248A (en) 1941-02-28 1941-02-28 Improvements in or relating to the manufacture of transparent papers and artificial fibres

Country Status (1)

Country Link
GB (1) GB548248A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5456941A (en) * 1993-02-10 1995-10-10 Showa Sangyo Co., Ltd Process for preparing biodegradable water-resistant film and method for rendering biodegradable article water-resistant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5456941A (en) * 1993-02-10 1995-10-10 Showa Sangyo Co., Ltd Process for preparing biodegradable water-resistant film and method for rendering biodegradable article water-resistant
US5585060A (en) * 1993-02-10 1996-12-17 Showa Sangyo Co. Ltd. Process for preparing biodegradable water-resistant film

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