GB963195A - Spinning of polypropylene - Google Patents

Spinning of polypropylene

Info

Publication number
GB963195A
GB963195A GB1950763A GB1950763A GB963195A GB 963195 A GB963195 A GB 963195A GB 1950763 A GB1950763 A GB 1950763A GB 1950763 A GB1950763 A GB 1950763A GB 963195 A GB963195 A GB 963195A
Authority
GB
United Kingdom
Prior art keywords
orifice
diameter
spinneret
length
section
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
GB1950763A
Inventor
Gerald Albert Mcfarren
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.)
Hercules Powder Co
Original Assignee
Hercules Powder Co
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 Hercules Powder Co filed Critical Hercules Powder Co
Priority to GB1950763A priority Critical patent/GB963195A/en
Publication of GB963195A publication Critical patent/GB963195A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene

Abstract

963,195. Spinnerets. HERCULES POWDER CO. May 16, 1963, No. 19507/63. Heading B5B. A spinneret has a plurality of orifices, each orifice being composed of a cylindrical egress section B having a length to diameter ratio of at least 3 and a conical entry section A having a taper of from 5 to 35 degrees from the axis of the orifice. Fig. 3 illustrates an alternative orifice shape. Preferably, the egress section of each orifice has a diameter of from 0.008 to 0.025 inch and a length of 3-20 times the diameter. Stereoregular polypropylene containing preferably less than 5% of amorphous polymer may be dissolved in a suitable solvent to give a solution of about 25-45% concentration and dry spun through such a spinneret at e.g. 120-170‹ C. into a drying column through which a hot gas e.g. nitrogen, carbon dioxide, or steam is passed in order to evaporate the solvent. Specified solvents include paraffinic hydrocarbons, especially those boiling above about 170‹ C., e.g. toluene and xylene, chlorobenzene, tetrahydronaphthalene and decahydronaphthalene. Specification 851,611 is referred to.
GB1950763A 1963-05-16 1963-05-16 Spinning of polypropylene Expired GB963195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1950763A GB963195A (en) 1963-05-16 1963-05-16 Spinning of polypropylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1950763A GB963195A (en) 1963-05-16 1963-05-16 Spinning of polypropylene

Publications (1)

Publication Number Publication Date
GB963195A true GB963195A (en) 1964-07-08

Family

ID=10130521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1950763A Expired GB963195A (en) 1963-05-16 1963-05-16 Spinning of polypropylene

Country Status (1)

Country Link
GB (1) GB963195A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3621087A (en) * 1967-07-31 1971-11-16 Toyo Rayon Co Ltd Process for the preparation of acrylic fibers with odd-shaped sections
EP0550858A1 (en) * 1991-12-18 1993-07-14 Mitsubishi Chemical Corporation Carbon fibers and process for their production
US5652001A (en) * 1993-05-24 1997-07-29 Courtaulds Fibres Limited Spinnerette

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3621087A (en) * 1967-07-31 1971-11-16 Toyo Rayon Co Ltd Process for the preparation of acrylic fibers with odd-shaped sections
EP0550858A1 (en) * 1991-12-18 1993-07-14 Mitsubishi Chemical Corporation Carbon fibers and process for their production
US5612015A (en) * 1991-12-18 1997-03-18 Mitsubishi Chemical Corporation Carbon fibers and process for their production
US5652001A (en) * 1993-05-24 1997-07-29 Courtaulds Fibres Limited Spinnerette

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