US1924923A - Process for making rubber thread - Google Patents

Process for making rubber thread Download PDF

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Publication number
US1924923A
US1924923A US595235A US59523532A US1924923A US 1924923 A US1924923 A US 1924923A US 595235 A US595235 A US 595235A US 59523532 A US59523532 A US 59523532A US 1924923 A US1924923 A US 1924923A
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US
United States
Prior art keywords
latex
thread
coagulant
coagulum
stream
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
US595235A
Inventor
Willis A Gibbons
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 US595235A priority Critical patent/US1924923A/en
Priority claimed from GB19594/33A external-priority patent/GB402364A/en
Priority to DEI47606D priority patent/DE614615C/en
Application granted granted Critical
Publication of US1924923A publication Critical patent/US1924923A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/16—Furnaces having endless cores
    • H05B6/20—Furnaces having endless cores having melting channel only
    • 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
    • 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 a process for making rubber thread, and more particularly to a process for manufacturing filaments, threads or hands,
  • thread from coagulable dispersions of elastic materials, such as rubber latex.
  • a process for manufacturing rubber thread from latex by passing a stream of latex through an orifice into a bath of coagulant'and continuously withdrawing a formed rubber thread from the coagulating bath and subsequently drying and vulcanizing, if desired, has been known for some time.
  • the present invention relates to a process for making rubber thread which includes passing a stream of coagulant into a body of latex and continuously Withdrawing the resulting filamentary ooagulum.
  • a stream of coagulant is passed through a suitable nozzle into a bath of-latex to coagulate latex about the stream and form a substantially solid thread which may be continuously withdrawn from the main body of latex.
  • a filamentary coagulum or gel is formed initially surrounding a liquid core of coagulant; then, as the thread or filament passes through the latex bath or through later stages of the process, it becomes substantially coreless.
  • the thread is Withdrawn from the latex bath it is coated with uncoagulated latex, hence it is desirable to thereafter harden the surface of the thread by subjecting it to a further setting or coagulating treatment.
  • the size of the filament depends on the size of the nozzle, the rate of flow of coagulant through the nozzle, the nature of the coagulant, the rate of coagulation of the latex, the length of travel through the latex bath,and the rate of withdrawal of the filament from the bath.
  • various well known latex coagulants such as aqueous solutions of acetic acid, preferably containing from -25% acetic acid, or alcohol or mixture of acetic acid and alcohol may be used as thread-forming coagulants and various other coagulants will be apparent to those skilled in the art.
  • the coagulant liquid may be thickened to any desired consistency by the addition thereto of any suitable material which is soluble or dispersible therein, such as cellulose acetate, or various gums and'resins, natural or artificial.
  • the surface of the formed. thread may be hardened, as described above,-by the use of solutions of di-' or tri-valent metals as well as by the coagulants indicated above.
  • the viscosity of the coagulant liquid, the method of drying the filament, the composition of the dispersion with reference to the various compounding ingredients, the rate of flow of thecoagulant through v the nozzle, the rate of withdrawal of the thread, and the length of travel through the latex bath may be varied as desired.
  • the latex maybe vulcanized, or it may be unvulcanized with or without vulcanizing ingredients added thereto.
  • a vulcanized thread it may be obtained by compounding the latex with suitable vulcanizing ingredients, forming athread therefrom, and vulcanizing the final product; or it 0. may also be formed from a vulcanized latex as suggested above, or a thread formed from unvulcanized latex Without vulcanizing ingredients may be subjected to the action of vulcanizing liquids or vapors, or to solutions containing vul- 1 canizing ingredients.
  • the latex may be made heat sensitive by methods well known in the art and a hot coagulant streamed into such a heat sensitive latex in the manner above described.
  • latex in the description and claims 9 is used to designate broadly coagulable dispersions of elastic materials, includingartificial dispersions of rubber or rubber-like materials as well as natural latex, which may be preserved or otherwise treated as desired, and which may be in a normal, diluted, concentrated or purified condition produced by methods well known in the art.
  • a process for making rubber thread comprising the steps of streaming a coagulant into a body of latex and forming a continuous length of coagulum, and removing the length of coagulum from the latex.
  • a process for making rubber thread comprising the steps of forming a continuous length of coagulant by introducing a stream of coagulant into a body of latex,'removing the length of coagulum from the latex, and drying.
  • a process for making rubber thread comprising the steps of forming a continuous length of coagulum by introducing a stream of coagulant into a body of latex, removing the length of coagulum from the main body of latex, and vulcanizing.
  • a process for making rubber thread comprising passing a stream of coagulant through a nozzle into latex to coagulate said latex about said stream and thereby form a filamentary coaguluin containing a liquid core of coagulant, allowing said coagulum to remain in contact with the latex until a substantially coreless thread has been formed therefrom, and continuously withdrawing said solid thread from the latex.
  • a process for making rubber thread comprising the steps of streaming a coagulant into latex thereby forming initially a filamentary coagulum surrounding acore of coagulant, drawing the coagulum through the latex until a substantially coreless coagulum in the form of a thread is produced, and continuously withdrawing'the thread from the latex.
  • a process for making rubber thread comprising introducing 'a stream of coagulant into latex to coagulate said latex about said stream and form a thread thereby, removing the thread from the main body of latex, and drying.
  • a process for making rubber thread comprising introducing a stream of coagulant into latex to coagulate said latex about said stream and form a thread thereby, continuously removing the thread from the main body of latex, drying and vulcanizing.
  • a process for making rubber thread comprising introducing a stream of coagulant into latex to coagulate said latex about said stream and form a thread thereby, continuously removing the thread from the main body of latex, setting or coagulating the surface of the thread, and drying the thread.
  • a process for making rubber thread comprising the steps of continuously passing a stream of coagulant through a nozzle into a body of latex, drawing the formed coagulum away from the nozzle, and withdrawing the resulting filamentary coagulum from the body of latex.
  • a processfor making rubber thread comprising continuously passing a stream of coagulant through a nozzle into a body of latex, drawing the formed coagulum away from the nozzle, withdrawing the resulting filamentary coagulum from the body of the latex, and drymg.
  • a process for making rubber thread com prising continuously passing a stream. of 00 agulant through a nozzle into a body of latex drawing the formed coagulum away from the nozzle, Withdrawing the resulting filamentary coagulum from the body of latex, drying, and vulcanizing.
  • a process for making rubber thread comprising continuously passing a stream of coagulant through a nozzle into a body of latex, drawing the formed coagulum away from the nozzle, withdrawing the resulting filamentary coagulum from the body of latex, setting or 00- agulating the surface of the thread, drying, and vulcanizing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Moulding By Coating Moulds (AREA)
  • Artificial Filaments (AREA)

Description

Patented Aug. 29, 1933 PROCESS Foil MAKING RUBBER THREAD Willis A. Gibbons, Montclair, N. .l., assignor to Revere Rubber Eornpany, Providence, R. 1., a' corporation of Rhode Island N Drawing. Application February 25,1932 Serial No. 595,235
12 Claims.
This invention relates to a process for making rubber thread, and more particularly to a process for manufacturing filaments, threads or hands,
hereinafter generically termed thread, from coagulable dispersions of elastic materials, such as rubber latex.
A process for manufacturing rubber thread from latex by passing a stream of latex through an orifice into a bath of coagulant'and continuously withdrawing a formed rubber thread from the coagulating bath and subsequently drying and vulcanizing, if desired, has been known for some time.
The present invention relates to a process for making rubber thread which includes passing a stream of coagulant into a body of latex and continuously Withdrawing the resulting filamentary ooagulum.
In the preferred method of carrying out the invention, a stream of coagulant is passed through a suitable nozzle into a bath of-latex to coagulate latex about the stream and form a substantially solid thread which may be continuously withdrawn from the main body of latex. As the coagulant leaves the nozzle and comes in contact with the bath of latex, a filamentary coagulum or gel is formed initially surrounding a liquid core of coagulant; then, as the thread or filament passes through the latex bath or through later stages of the process, it becomes substantially coreless. As the thread is Withdrawn from the latex bath it is coated with uncoagulated latex, hence it is desirable to thereafter harden the surface of the thread by subjecting it to a further setting or coagulating treatment. This may be done by drawing the thread from the latex and over a roll of which the surface is kept wet with coagulant or by spraying or otherwise applying 4O coagulant to the surface of the thread after it has been removed from the latex, or by passing the thread through a groove provided with an orifice in the bottom through which coagulant emerges into the groove in small quantities, or by any combinations of such steps, or by other methods within the skill of those familiar in the art. The size of the filament depends on the size of the nozzle, the rate of flow of coagulant through the nozzle, the nature of the coagulant, the rate of coagulation of the latex, the length of travel through the latex bath,and the rate of withdrawal of the filament from the bath. According to this invention, various well known latex coagulants such as aqueous solutions of acetic acid, preferably containing from -25% acetic acid, or alcohol or mixture of acetic acid and alcohol may be used as thread-forming coagulants and various other coagulants will be apparent to those skilled in the art. The coagulant liquid may be thickened to any desired consistency by the addition thereto of any suitable material which is soluble or dispersible therein, such as cellulose acetate, or various gums and'resins, natural or artificial. The surface of the formed. thread may be hardened, as described above,-by the use of solutions of di-' or tri-valent metals as well as by the coagulants indicated above.
It is, of course, obvious that the viscosity of the coagulant liquid, the method of drying the filament, the composition of the dispersion with reference to the various compounding ingredients, the rate of flow of thecoagulant through v the nozzle, the rate of withdrawal of the thread, and the length of travel through the latex bath may be varied as desired. The latex maybe vulcanized, or it may be unvulcanized with or without vulcanizing ingredients added thereto.
If a vulcanized thread is desired, it may be obtained by compounding the latex with suitable vulcanizing ingredients, forming athread therefrom, and vulcanizing the final product; or it 0. may also be formed from a vulcanized latex as suggested above, or a thread formed from unvulcanized latex Without vulcanizing ingredients may be subjected to the action of vulcanizing liquids or vapors, or to solutions containing vul- 1 canizing ingredients. The latex may be made heat sensitive by methods well known in the art and a hot coagulant streamed into such a heat sensitive latex in the manner above described.
The term"latex in the description and claims 9 is used to designate broadly coagulable dispersions of elastic materials, includingartificial dispersions of rubber or rubber-like materials as well as natural latex, which may be preserved or otherwise treated as desired, and which may be in a normal, diluted, concentrated or purified condition produced by methods well known in the art.
Various other modifications will'be apparent to persons skilled in the art and it is understood that I do not intend to limit myself to the specific improvements as described above except as indicated in the appended claims:
Having thus described my invention, what I claim and desire to protect by Letters Patent is:
1. A process for making rubber thread comprising the steps of streaming a coagulant into a body of latex and forming a continuous length of coagulum, and removing the length of coagulum from the latex. no
2. A process for making rubber thread comprising the steps of forming a continuous length of coagulant by introducing a stream of coagulant into a body of latex,'removing the length of coagulum from the latex, and drying.
3. A process for making rubber thread comprising the steps of forming a continuous length of coagulum by introducing a stream of coagulant into a body of latex, removing the length of coagulum from the main body of latex, and vulcanizing.
4. A process for making rubber thread comprising passing a stream of coagulant through a nozzle into latex to coagulate said latex about said stream and thereby form a filamentary coaguluin containing a liquid core of coagulant, allowing said coagulum to remain in contact with the latex until a substantially coreless thread has been formed therefrom, and continuously withdrawing said solid thread from the latex.
5. A process for making rubber thread comprising the steps of streaming a coagulant into latex thereby forming initially a filamentary coagulum surrounding acore of coagulant, drawing the coagulum through the latex until a substantially coreless coagulum in the form of a thread is produced, and continuously withdrawing'the thread from the latex.
6. A process for making rubber thread comprising introducing 'a stream of coagulant into latex to coagulate said latex about said stream and form a thread thereby, removing the thread from the main body of latex, and drying.
7. A process for making rubber thread comprising introducing a stream of coagulant into latex to coagulate said latex about said stream and form a thread thereby, continuously removing the thread from the main body of latex, drying and vulcanizing.
8. A process for making rubber thread comprising introducing a stream of coagulant into latex to coagulate said latex about said stream and form a thread thereby, continuously removing the thread from the main body of latex, setting or coagulating the surface of the thread, and drying the thread.
9. A process for making rubber thread comprising the steps of continuously passing a stream of coagulant through a nozzle into a body of latex, drawing the formed coagulum away from the nozzle, and withdrawing the resulting filamentary coagulum from the body of latex.
10. A processfor making rubber thread comprising continuously passing a stream of coagulant through a nozzle into a body of latex, drawing the formed coagulum away from the nozzle, withdrawing the resulting filamentary coagulum from the body of the latex, and drymg. I
11. A process for making rubber thread com prising continuously passing a stream. of 00 agulant through a nozzle into a body of latex drawing the formed coagulum away from the nozzle, Withdrawing the resulting filamentary coagulum from the body of latex, drying, and vulcanizing.
12. A process for making rubber thread comprising continuously passing a stream of coagulant through a nozzle into a body of latex, drawing the formed coagulum away from the nozzle, withdrawing the resulting filamentary coagulum from the body of latex, setting or 00- agulating the surface of the thread, drying, and vulcanizing.
WILLIS A. GIBBONS.
US595235A 1932-02-25 1932-02-25 Process for making rubber thread Expired - Lifetime US1924923A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US595235A US1924923A (en) 1932-02-25 1932-02-25 Process for making rubber thread
DEI47606D DE614615C (en) 1932-02-25 1933-07-19 Process for the production of rubber threads

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US595235A US1924923A (en) 1932-02-25 1932-02-25 Process for making rubber thread
DE758972X 1932-08-01
GB19594/33A GB402364A (en) 1933-07-11 1933-07-11 Improvements in or relating to a process for making rubber thread
DEI47606D DE614615C (en) 1932-02-25 1933-07-19 Process for the production of rubber threads

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US1924923A true US1924923A (en) 1933-08-29

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814550A (en) * 1955-06-02 1957-11-26 Dow Chemical Co High viscosity saline coagulants for latexes
US3766002A (en) * 1970-12-02 1973-10-16 Nat Starch Chem Corp Nonwoven products
US5679196A (en) * 1995-10-05 1997-10-21 North American Rubber Thread Company, Inc. Process of making rubber thread
US20150031481A1 (en) * 2013-07-29 2015-01-29 Psi 91, Inc. Game ball
US9931533B2 (en) 2006-11-28 2018-04-03 Implus Footcare, Llc Lifting strap with enhanced gripping properties

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814550A (en) * 1955-06-02 1957-11-26 Dow Chemical Co High viscosity saline coagulants for latexes
US3766002A (en) * 1970-12-02 1973-10-16 Nat Starch Chem Corp Nonwoven products
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
US9931533B2 (en) 2006-11-28 2018-04-03 Implus Footcare, Llc Lifting strap with enhanced gripping properties
US20150031481A1 (en) * 2013-07-29 2015-01-29 Psi 91, Inc. Game ball
US9089740B2 (en) * 2013-07-29 2015-07-28 Psi 91, Inc. Game ball
US9956458B2 (en) 2013-07-29 2018-05-01 Psi 91, Inc. Game ball

Also Published As

Publication number Publication date
DE614615C (en) 1935-06-12

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