US3751897A - Asbestos yarn reinforced with continuous strand of a polyvinyl alcohol - Google Patents

Asbestos yarn reinforced with continuous strand of a polyvinyl alcohol Download PDF

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Publication number
US3751897A
US3751897A US00129195A US3751897DA US3751897A US 3751897 A US3751897 A US 3751897A US 00129195 A US00129195 A US 00129195A US 3751897D A US3751897D A US 3751897DA US 3751897 A US3751897 A US 3751897A
Authority
US
United States
Prior art keywords
staple
fiber
asbestos
yarn
fibers
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
US00129195A
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English (en)
Inventor
G Bailey
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.)
Johns Manville Corp
Johns Manville
Original Assignee
Johns Manville
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 Johns Manville filed Critical Johns Manville
Application granted granted Critical
Publication of US3751897A publication Critical patent/US3751897A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/16—Yarns or threads made from mineral substances
    • D02G3/20—Yarns or threads made from mineral substances from asbestos

Definitions

  • This invention comprises providing an asbestos yarn formed of staple asbestos fiber with a continuous strand reinforcement composed of spun yarn of staple polyvinyl alcohol fiber, such as Kurashiki Rayon Co. Ltd. of
  • Japans fiber product identified KURALON.
  • the measures of this invention contribute to the alleviation of the growing shortage of the availability of the longer grades of so-calledtextile asbestos fibers which are more manageable in handling and spinning by facilitating the use of shorter or otherwise inferior grades thereof.
  • novel products of this invention comprise an asbestos yarn formed substantially of staple asbestos fiber containing therein as a core strand a continuous reinforcement of spun yarn of staple polyvinyl alcohol fiber.
  • the asbestos yarn products of this invention are composed primarily of staple fibers, either of all asbestos or of at least a major proportionin excess of at least about 75 percent by weight-of staple asbestos fiber blended with staple organic fiber in minor proportionsat least less than about 25 percent by weight.
  • staple fibers Preby the trademark ferred organic fibers comprise rayon staple although others such as cotton staple and the like vegetable or animal fibers as well as synthetic fibers such as polyamide or polyester staple can be included.
  • the proportion of the non-asbestos staple component is less than about 25 percent by weight of the total of staple fiber.
  • Such common organic textile staple fibers tend to entrain the stiffer asbestos and aid in spinning or twisting the asbestos into a coherent twist interlocked yarn body.
  • the asbestos fibers may be of any common variety including'chrysotile or amosite, etc., of usual spinning grades, but also including those of somewhat inferior or shorter classes since the means of this invention enhance the forming operation and yarn product quality which permits the use of such heretofore inappropriate materials, among other pronounced benefits.
  • the continuous strand reinforcement component of this invention for the asbestos yarn constitutes a spun yarn of staple polyvinyl alcohol fiber. This component preferably constitues less than about 5% by weight of the total composite yarn product.
  • Products of this invention can be conveniently formed with conventional textile apparatus designed for working with asbestos fibers, comprising a card, rub aprons and spinning or twisting frames.
  • measures or yarn construction of this invention significantly facilitate carrying out of the forming process with such machines in enabling the direct and continuous feeding or transfer of the staple asbestos fiber web or sliver from the card and rubbing apron to the twisting device or operation without undue handling precautions and bypassing the usual spinning operation.
  • a carding machine of usual design for asbestos comb s the staple asbestos fibers, either alone or blended with other staplefiber, into substantially parallel aligned orientation and discharges it in the form of narrow ribbons or filmy webs of comb aligned fiber sometimes referred to as slivers. If the staple fiber phase of the yarn is to be composed of a fiber blend of staple organic combined with the asbestos, the carding operation is simply preceded with the usual blending procedure and device therefor.
  • the card formed sliver or strip of substantially parallel aligned staple is conducted to one or more rubbing aprons in series. It is however at this point-intermediate the carding operation and the rubbing apron--that the continuous strand reinforcement of spun yarn of staple polyvinyl alcohol fiber is introduced into the process and combined with the said card formed sliver or web of generally aligned staple asbestos alone or combined with other staple fiber prior to its being subjected to the rolling and condensing action of the rubbing aprons.
  • the resultant roving exhibits ample strength to be conducted directly and without undue care or precaution to a twisting device of conventional design, thereby obviating the need for the usual spinning operation. Twisting, or spinning, of the thus formed and constructed composite roving intertwines and frictionally interlocks each the staple fi- Rayon Co. Ltd., of Japan, was fed at a rate commensurate with the overall speed of the operation. The reinforcing core strand comprised about 1.7 percent by weight of the composite. The so combined staple fiber and continuous strand was then continuously passed through the usual series of two rubbing aprons, and thereafter to a twisting unit whereupon it was twisted to commercial grade asbestos yarn into a strongly interlocked and coherent yarn.
  • a specific illustration of the invention comprises the following.
  • a usual carded staple asbestos fiber strip web or sliver composed of a blend of about 80 percent by weight of staple asbestos, grade 3T-l2 by Quebec Standard Asbestos Test, and about percent of rayon staple 3 denier l 9/16 in. dull crimped passing from the card to the rubbing aprons, a continuous strand of 20/l yarn of staple polyvinyl alcohol fiber, Perlohke spinning system.
  • KURALON fiber yarn of Kurashiki l.
  • a high tensile strength and chemical resistant reinforced yarn relatively unaffected by approximately one days exposure to concentrated hydrochloric or sulfuric acid at ambient temperature, and consisting essentially of an over-lying staple fiber component comprising asbestos fibers and a core strand reinforcement consisting essentially of spun staple polyvinyl alcohol fibers.
  • the reinforced yam of claim 1 wherein the overlying staple fiber component comprises a blend of staple asbestos fibers in the major proportion and including dispersed therethrough a minor proportion of staple organic fiber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US00129195A 1971-03-29 1971-03-29 Asbestos yarn reinforced with continuous strand of a polyvinyl alcohol Expired - Lifetime US3751897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12919571A 1971-03-29 1971-03-29

Publications (1)

Publication Number Publication Date
US3751897A true US3751897A (en) 1973-08-14

Family

ID=22438845

Family Applications (1)

Application Number Title Priority Date Filing Date
US00129195A Expired - Lifetime US3751897A (en) 1971-03-29 1971-03-29 Asbestos yarn reinforced with continuous strand of a polyvinyl alcohol

Country Status (8)

Country Link
US (1) US3751897A (it)
BE (1) BE781329A (it)
BR (1) BR7201895D0 (it)
CA (1) CA963751A (it)
DE (1) DE2215669A1 (it)
FR (1) FR2131694A5 (it)
GB (1) GB1356733A (it)
IT (1) IT952428B (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331729A (en) * 1980-12-01 1982-05-25 Norfab Corporation Heat resistant and protective fabric and yarn for making the same
US4375779A (en) * 1981-04-24 1983-03-08 Minnesota Mining And Manufacturing Company Composite sewing thread of ceramic fibers
US4500593A (en) * 1980-12-01 1985-02-19 Weber John W Protective fabric and fire curtain with a metallic laminate
US4670327A (en) * 1980-12-01 1987-06-02 Weber John W Heat resistant and protective fabric and yarn for making the same
US5506043A (en) * 1989-08-18 1996-04-09 Norfab Corporation Thermal protective fabric and core-spun heat resistant yarn for making the same, said yarns consisting essentially of a fiberglass core and a cover of modacrylic fibers and at least one other flame retardant fiber
US6823569B2 (en) 2001-03-26 2004-11-30 Polgat Textiles Co. Process for the manufacture of super fine woven wool fabric with single yarn in the warp having improved weavability
CN109706575A (zh) * 2019-01-28 2019-05-03 英麒科技集团有限公司 一种携带石棉短纤维抄纸的纱线

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB577623A (en) * 1943-05-29 1946-05-24 American Viscose Corp Improvements in asbestos yarns
US2503237A (en) * 1947-08-02 1950-04-11 Raybestos Manhattan Inc Reinforced asbestos roving, sliver, or yarn
US2506667A (en) * 1948-11-24 1950-05-09 Edward H Hall Composite textile yarn for use in papermaking felts
US3049153A (en) * 1959-09-15 1962-08-14 Ayers Ltd Dryer felts
US3164951A (en) * 1962-03-12 1965-01-12 Turner Brothers Asbest Method of forming a core yarn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB577623A (en) * 1943-05-29 1946-05-24 American Viscose Corp Improvements in asbestos yarns
US2503237A (en) * 1947-08-02 1950-04-11 Raybestos Manhattan Inc Reinforced asbestos roving, sliver, or yarn
US2506667A (en) * 1948-11-24 1950-05-09 Edward H Hall Composite textile yarn for use in papermaking felts
US3049153A (en) * 1959-09-15 1962-08-14 Ayers Ltd Dryer felts
US3164951A (en) * 1962-03-12 1965-01-12 Turner Brothers Asbest Method of forming a core yarn

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331729A (en) * 1980-12-01 1982-05-25 Norfab Corporation Heat resistant and protective fabric and yarn for making the same
US4500593A (en) * 1980-12-01 1985-02-19 Weber John W Protective fabric and fire curtain with a metallic laminate
US4670327A (en) * 1980-12-01 1987-06-02 Weber John W Heat resistant and protective fabric and yarn for making the same
US4375779A (en) * 1981-04-24 1983-03-08 Minnesota Mining And Manufacturing Company Composite sewing thread of ceramic fibers
US5506043A (en) * 1989-08-18 1996-04-09 Norfab Corporation Thermal protective fabric and core-spun heat resistant yarn for making the same, said yarns consisting essentially of a fiberglass core and a cover of modacrylic fibers and at least one other flame retardant fiber
US6823569B2 (en) 2001-03-26 2004-11-30 Polgat Textiles Co. Process for the manufacture of super fine woven wool fabric with single yarn in the warp having improved weavability
CN109706575A (zh) * 2019-01-28 2019-05-03 英麒科技集团有限公司 一种携带石棉短纤维抄纸的纱线

Also Published As

Publication number Publication date
BR7201895D0 (pt) 1973-05-15
CA963751A (en) 1975-03-04
DE2215669A1 (de) 1972-10-12
FR2131694A5 (it) 1972-11-10
IT952428B (it) 1973-07-20
GB1356733A (en) 1974-06-12
BE781329A (fr) 1972-09-28

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