GB1171839A - High Speed Spinning Viscose Rayon Filaments having High Wet Modulus. - Google Patents

High Speed Spinning Viscose Rayon Filaments having High Wet Modulus.

Info

Publication number
GB1171839A
GB1171839A GB37432/67A GB3743267A GB1171839A GB 1171839 A GB1171839 A GB 1171839A GB 37432/67 A GB37432/67 A GB 37432/67A GB 3743267 A GB3743267 A GB 3743267A GB 1171839 A GB1171839 A GB 1171839A
Authority
GB
United Kingdom
Prior art keywords
viscose
filaments
spinning
cellulose
solvent
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
GB37432/67A
Inventor
Yoichi Uchida
Keniti Hukuma
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.)
Teijin Ltd
Original Assignee
Teijin 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
Priority to US660419A priority Critical patent/US3539678A/en
Application filed by Teijin Ltd filed Critical Teijin Ltd
Priority to GB37432/67A priority patent/GB1171839A/en
Priority to CH1186967A priority patent/CH503808A/en
Priority to BE703189D priority patent/BE703189A/xx
Priority to FR119857A priority patent/FR1548420A/fr
Priority to NL6712159A priority patent/NL6712159A/xx
Priority to DE19671669547 priority patent/DE1669547A1/en
Publication of GB1171839A publication Critical patent/GB1171839A/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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath
    • 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
    • Y10S264/27—Process of spinning viscose where viscose has high degree of polymerization

Abstract

1,171,839. Producing viscose rayon filaments- TEIJIN Ltd. 15 Aug., 1967, No. 37432/67. Heading B5B. Viscose rayon filaments having a high wet modulus are produced by high-speed spinning wherein viscose having a gamma value at the time of spinning of 65-80 and containing cellulose having a degree of polymerization within the range 400 and 700 is extruded at a temperature within the range 35‹ to 60‹ C. into an aqueous spinning bath containing 4 to 6% by weight of sulphuric acid, 3 to 6% of sodium sulphate and 0À001 to 0À1% of zinc sulphate maintained at a temperature of, for example, 30‹ to 60‹ C. The viscose is characterized in that the relationship between the degree of polymerization of the cellulose contained in it, the cellulose content of the viscose and the total sodium content of the viscose (expressed as the percentage by weight of sodium hydroxide in the viscose) is such as to satisfy both the following formulµ:- wherein #DP is the average degree of polymerization of the cellulose in the viscose, CC is the percentage by weight of cellulose in the viscose and TA is the total sodium content of the viscose expressed as sodium hydroxide. The heating of the viscose to 35‹ to 60‹ C. is effected immediately before it is spun. The filaments formed are preferably stretched between first and second godets after being withdrawn from the spinning bath at a stretch ratio of 1À2 to 1À8. The rate of removal of the solvent from the filaments on the first godet over which the filaments pass after being withdrawn from the spinning bath is specified as being 40 to 60% and the filaments are then stretched. The spinning speed is specified to be at least 80 metres per minute using a "horizontal type" spinning machine. The expression "rate of solvent removal" is defined as the rate at which the solvent (the aqueous solution of sodium hydroxide) is expelled from the viscose during the spinning step and is expressed as the ratio of the amount of the solvent removed during the spinning step to the amount of solvent in the original viscose, expressed as a percentage by weight. The ratio is calculated using the formula wherein R represents the ratio, C 2 is the cellulose content of the filament during the spinning step and C 1 is the cellulose content of the viscose. C 2 is determined by washing and centrifuging a sample of the filaments in the gel state, weighing the filaments (A grams), treating the filaments with a dilute aqueous solution of sulphuric acid, and then weighing them (B grams) after washing and drying them. C 2 is then calculated by means of the formula
GB37432/67A 1967-08-14 1967-08-15 High Speed Spinning Viscose Rayon Filaments having High Wet Modulus. Expired GB1171839A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US660419A US3539678A (en) 1967-08-14 1967-08-14 High speed spinning method of viscose rayon filaments having high wet modulus
GB37432/67A GB1171839A (en) 1967-08-14 1967-08-15 High Speed Spinning Viscose Rayon Filaments having High Wet Modulus.
CH1186967A CH503808A (en) 1967-08-14 1967-08-24 Process for the production of viscose rayon filaments of high wet modulus
BE703189D BE703189A (en) 1967-08-14 1967-08-28
FR119857A FR1548420A (en) 1967-08-14 1967-09-04
NL6712159A NL6712159A (en) 1967-08-14 1967-09-05
DE19671669547 DE1669547A1 (en) 1967-08-14 1967-09-07 Process for spinning viscose yon threads

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US66041967A 1967-08-14 1967-08-14
GB37432/67A GB1171839A (en) 1967-08-14 1967-08-15 High Speed Spinning Viscose Rayon Filaments having High Wet Modulus.
CH1186967A CH503808A (en) 1967-08-14 1967-08-24 Process for the production of viscose rayon filaments of high wet modulus
BE703189 1967-08-28
FR119857 1967-09-04
NL6712159A NL6712159A (en) 1967-08-14 1967-09-05
DET0034736 1967-09-07

Publications (1)

Publication Number Publication Date
GB1171839A true GB1171839A (en) 1969-11-26

Family

ID=27560779

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37432/67A Expired GB1171839A (en) 1967-08-14 1967-08-15 High Speed Spinning Viscose Rayon Filaments having High Wet Modulus.

Country Status (7)

Country Link
US (1) US3539678A (en)
BE (1) BE703189A (en)
CH (1) CH503808A (en)
DE (1) DE1669547A1 (en)
FR (1) FR1548420A (en)
GB (1) GB1171839A (en)
NL (1) NL6712159A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9720213D0 (en) * 1997-09-23 1997-11-26 Kelheim Faserwerk Gmbh Manufacture of viscose and articles therefrom
EP1990362A1 (en) * 2007-05-09 2008-11-12 Borealis Technology Oy Polyolefin compositions with highly crystalline cellulose regenerate fibers
AT506268B1 (en) * 2008-01-11 2014-08-15 Chemiefaser Lenzing Ag MICROFIBRE
PT2235240E (en) 2008-01-16 2012-05-18 Chemiefaser Lenzing Ag Fibre blends, yarns and fabrics made thereof
AT511746B1 (en) 2011-08-10 2013-12-15 Chemiefaser Lenzing Ag ACTIVATED CARBON-CONTAINING CELLULOSIC MAN-MADE FIBER AND METHOD FOR THE PRODUCTION AND USE THEREOF

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2307863A (en) * 1940-12-03 1943-01-12 Du Pont Spinning of artificial filaments
BE492102A (en) * 1948-11-23
BE553231A (en) * 1955-12-14
BE632439A (en) * 1962-05-16
NL296879A (en) * 1962-12-27

Also Published As

Publication number Publication date
BE703189A (en) 1968-01-15
NL6712159A (en) 1969-03-07
US3539678A (en) 1970-11-10
CH503808A (en) 1971-02-28
DE1669547A1 (en) 1970-12-03
FR1548420A (en) 1968-12-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees