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US1902953A - Method and apparatus for the manufacture of filamentary material - Google Patents

Method and apparatus for the manufacture of filamentary material Download PDF

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Publication number
US1902953A
US1902953A US521641A US52164131A US1902953A US 1902953 A US1902953 A US 1902953A US 521641 A US521641 A US 521641A US 52164131 A US52164131 A US 52164131A US 1902953 A US1902953 A US 1902953A
Authority
US
United States
Prior art keywords
rubber
filaments
rate
thread
corners
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 - Lifetime
Application number
US521641A
Other languages
English (en)
Inventor
Hazell Eardley
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.)
Revere Rubber Co
Original Assignee
Revere Rubber 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 Revere Rubber Co filed Critical Revere Rubber Co
Priority to US521641A priority Critical patent/US1902953A/en
Priority to DER84352D priority patent/DE617201C/de
Application granted granted Critical
Publication of US1902953A publication Critical patent/US1902953A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0078—Producing filamentary materials
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • 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
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/731—Filamentary material, i.e. comprised of a single element, e.g. filaments, strands, threads, fibres

Definitions

  • This invention relates to the production of filamenta material of desired shapes from .aqpeous dispersions of rubber in a manner w ich is simple and economical and by means of which the shape of the filament produced ma be accurately controlled and regulated.
  • object of the invention is to provide a process and apparatus for forming continuous filaments of rubber from aqueous rubber dispersions. Another object is to provide means for forming continuous rubber filaments having any desired cross-sectional shape, more particularl filaments having cross sections the boun aries of which are straight lines.
  • a further object is to provide a process and apparatus for forming from' an aqueous dispersion of rubber, continuous rubber filaments which are suitable for use in elastic webbing, clothing,'etc., as well as for use in other manufactures such as'the windin of golf balls.
  • the coagulated rubber filament is, as above indicated, slightly difierent from the cross sectional shape of the orifice, unless the orifice is of extremely small dimensions.
  • the thread may vary from a circular cross section to one having straight sides with rounded corners.
  • the immediate action of the coagulant is to form a rubber skin at the surface leaving the center in a more or less fluid condition. Immedibeing still moldable to some extent, exhibits the natural tendency of a tensioned surface to alter its shape to expose the shortest possible bound ary over a given area or to present a circular cross-section.
  • the cross section is round or merely has rounded'corners is dependent to some extent on various factors such as the size of the thread, the speed at which it is drawn through the coagulatin bath, and the rate of coagulation, all 0 which affect the rate of coagulation of the center of the thread.
  • the shape of the orifice and the pressure or head "under which the material is formed or spun are other factors upon which accuracy and control in result must be based to some extent, as hereinafter indicated.
  • Figs. 1 and 2 illustrate the contour of an orifice designed to give threads whose cross sectional contours are square and rectarggutaken at right i outwar ly concave sides section of an orifice with concave sides tend to assume the sha as indicated in cross section in Fi .4.
  • the action 0 streaming a coagulable liquid into a coagulant is to form a skin at the surface.
  • Surface tension forces then act to reduce the boundaries to a minimum and fora given area the ultimate boundary of a cross section of material will e of a circle.
  • the shape of the the stream leaves the ori where an aqueous surrounding rubber skin
  • the head or pressureon the streamed liquid and the rate of drawing it away from the nozzle into the coa ulant are factors which must-be considere in the regulation and control of thread size and shape. For example a high pressure and low rate of pulling will result in the production of a round thread regardless of the sha of the nozzle due to the fact that the sur ace tension forces have ample time to contract the surface into the form of a circle. With a low pressure and high rateof pulling the coagulant strikes back along the.
  • the rate of withdrawal may be regulated by va g the speed of the apparatus andle the thread after-forma-- tion. This may be in the form era are:
  • the invention is not only applicable to the production of square control may also and rectangular thread from nozzles of the shape desired, production of threads or bands of' other shapes bounded by straight lines, for example triangles, parallelograms, polygons, etc.
  • Filaments produced by this invention are more satisfactory for weaving into elastic webbing etc. than round filaments.
  • the sharp, even corners characterizing the square or rectangular thread made in accordance with this invention enables fibrous material to be spun,-twisted or wound around the rub-' ber'filaments and hold its osition thereon, whereas round thread used or the same purpose has been found to allow the fibrous teria'l to slip after twisting or weaving about such rubber filaments.
  • thread is not desirable for certain manufactures such as golf balls, and by this invenround I tion a tough unmilled rubber thread of square or flat cross section may be made which is well adaptedito the production of these and other articles.
  • Rubber thread formed by means of the present invention resists chafin in winding as in the manufacture of golf ba centers and incorporation in articles and therefore r I in processing during such as elastic webbing,
  • agents, accelerators, anti-oxidants, fillersand other compoundinigaigredients may be added to the aqueous ru r dis ersions used therewith: '1'-"fthe formation 4 hill and
  • vulcanizing means of rubber articles in accordance with the principles herein set out may be dried and vulcanized by any suitab e means.
  • the invention is not limited to the particu- 6 l'ar embodiment illustrated but is capable of.
  • aqueous dispersions of rubber which comprises streaming a dispersion through orifices having outwardly concave sides and on d corners while regulating the rate of wit drawal from said orifices, and the pressure under which such streamin is effected.
  • a thread forming nozzle for extrusion of neousdispersions of rubber having an o ce whose cross section delineates outwardly concave siggs and cusped corners.
  • a thread forming nozzle for extrusion of aqueous dispersions of rubber having an orifice o defined .by outwardly concave sides and cusped corners, and in'which the inner surface of the nwzle ad'acent to the orifice is normal to the plane 0 the orifice.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reinforced Plastic Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
US521641A 1931-03-11 1931-03-11 Method and apparatus for the manufacture of filamentary material Expired - Lifetime US1902953A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US521641A US1902953A (en) 1931-03-11 1931-03-11 Method and apparatus for the manufacture of filamentary material
DER84352D DE617201C (de) 1931-03-11 1932-03-11 Verfahren und Spinnduese zum Herstellen von Kautschukfaeden

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US375244XA 1931-03-11 1931-03-11
US521641A US1902953A (en) 1931-03-11 1931-03-11 Method and apparatus for the manufacture of filamentary material

Publications (1)

Publication Number Publication Date
US1902953A true US1902953A (en) 1933-03-28

Family

ID=26714211

Family Applications (1)

Application Number Title Priority Date Filing Date
US521641A Expired - Lifetime US1902953A (en) 1931-03-11 1931-03-11 Method and apparatus for the manufacture of filamentary material

Country Status (2)

Country Link
US (1) US1902953A (de)
DE (1) DE617201C (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747320A (en) * 1954-05-07 1956-05-29 Daniel P Boland Fish line leader
US3023483A (en) * 1959-02-19 1962-03-06 Steiner Walter Rope made from synthetic thermoplastics
US3109768A (en) * 1960-01-06 1963-11-05 Du Pont Textile filament
US3249669A (en) * 1964-03-16 1966-05-03 Du Pont Process for making composite polyester filaments
US3308504A (en) * 1965-07-22 1967-03-14 Us Rubber Co Spinnerets
US3499958A (en) * 1965-11-08 1970-03-10 Rhodiaceta Process for obtaining x-shaped filaments
US4181486A (en) * 1977-05-17 1980-01-01 Sumitomo Electric Industries, Ltd. Apparatus for producing the insulating layer of a coaxial cable
US4182606A (en) * 1975-11-20 1980-01-08 Fiber Industries, Inc. Slit extrusion die
US5679196A (en) * 1995-10-05 1997-10-21 North American Rubber Thread Company, Inc. Process of making rubber thread
US20080018011A1 (en) * 2006-07-21 2008-01-24 Gregg Joseph V Production of UHMWPE sheet materials
US20080018022A1 (en) * 2006-07-21 2008-01-24 Gregg Joseph V Production of UHMWPE sheet materials
US20080018026A1 (en) * 2006-07-21 2008-01-24 Quadrant Epp Ag. Production of UHMWPE Sheet Materials
US20080020182A1 (en) * 2006-07-21 2008-01-24 Gregg Joseph V Production of UHMWPE sheet materials
US20080241327A1 (en) * 2007-02-21 2008-10-02 Kerry, Inc. Extrusion die with extrusion ports having a shaped extrusion outlet
US20090302491A1 (en) * 2008-05-06 2009-12-10 Kerry, Inc. Extrusion die with extrusion port having a shaped extrusion outlet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894002C (de) * 1950-07-14 1954-04-29 Standard Gummiwerk Baumgarten Verfahren und Form zur Herstellung von Kautschukfaeden

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747320A (en) * 1954-05-07 1956-05-29 Daniel P Boland Fish line leader
US3023483A (en) * 1959-02-19 1962-03-06 Steiner Walter Rope made from synthetic thermoplastics
US3109768A (en) * 1960-01-06 1963-11-05 Du Pont Textile filament
US3249669A (en) * 1964-03-16 1966-05-03 Du Pont Process for making composite polyester filaments
US3308504A (en) * 1965-07-22 1967-03-14 Us Rubber Co Spinnerets
US3499958A (en) * 1965-11-08 1970-03-10 Rhodiaceta Process for obtaining x-shaped filaments
US4182606A (en) * 1975-11-20 1980-01-08 Fiber Industries, Inc. Slit extrusion die
US4181486A (en) * 1977-05-17 1980-01-01 Sumitomo Electric Industries, Ltd. Apparatus for producing the insulating layer of a coaxial cable
US5679196A (en) * 1995-10-05 1997-10-21 North American Rubber Thread Company, Inc. Process of making rubber thread
US5804307A (en) * 1995-10-05 1998-09-08 North American Rubber Thread Co., Inc. Rubber thread
US20080018026A1 (en) * 2006-07-21 2008-01-24 Quadrant Epp Ag. Production of UHMWPE Sheet Materials
US7758796B2 (en) 2006-07-21 2010-07-20 Quadrant Epp Ag Production of UHMWPE sheet materials
US20080018011A1 (en) * 2006-07-21 2008-01-24 Gregg Joseph V Production of UHMWPE sheet materials
US20080020182A1 (en) * 2006-07-21 2008-01-24 Gregg Joseph V Production of UHMWPE sheet materials
US7980839B2 (en) 2006-07-21 2011-07-19 Quadrant Epp Ag Production of UHMWPE sheet materials
US7981349B2 (en) 2006-07-21 2011-07-19 Quadrant Epp Ag Production of UHMWPE sheet materials
US20100244321A1 (en) * 2006-07-21 2010-09-30 Quadrant Epp Ag Production Of UHMWPE Sheet Materials
US7736579B2 (en) * 2006-07-21 2010-06-15 Quadrant Epp Ag Production of UHMWPE sheet materials
US20100173030A1 (en) * 2006-07-21 2010-07-08 Quadrant Epp Ag Production of uhmwpe sheet materials
US7758797B2 (en) * 2006-07-21 2010-07-20 Quadrant Epp Ag Production of UHMWPE sheet materials
US20080018022A1 (en) * 2006-07-21 2008-01-24 Gregg Joseph V Production of UHMWPE sheet materials
US7803450B2 (en) 2006-07-21 2010-09-28 Quadrant Epp Ag Production of UHMWPE sheet materials
US7771767B2 (en) 2007-02-21 2010-08-10 Kerry, Inc. Extrusion die with extrusion ports having a shaped extrusion outlet
WO2008103782A3 (en) * 2007-02-21 2009-01-22 Kerry Inc Extrusion die with extrusion ports having a shaped extrusion outlet
US20080241327A1 (en) * 2007-02-21 2008-10-02 Kerry, Inc. Extrusion die with extrusion ports having a shaped extrusion outlet
US20090302491A1 (en) * 2008-05-06 2009-12-10 Kerry, Inc. Extrusion die with extrusion port having a shaped extrusion outlet

Also Published As

Publication number Publication date
DE617201C (de) 1935-08-14

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