US3747817A - Needle roller for the fibrillation of a splittable plastics film - Google Patents

Needle roller for the fibrillation of a splittable plastics film Download PDF

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Publication number
US3747817A
US3747817A US00182380A US3747817DA US3747817A US 3747817 A US3747817 A US 3747817A US 00182380 A US00182380 A US 00182380A US 3747817D A US3747817D A US 3747817DA US 3747817 A US3747817 A US 3747817A
Authority
US
United States
Prior art keywords
needle
roller
combs
needles
fibrillation
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
US00182380A
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English (en)
Inventor
P Klaase
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.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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
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Application granted granted Critical
Publication of US3747817A publication Critical patent/US3747817A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
    • D01D5/423—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by fibrillation of films or filaments
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/329—Plural breakers
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9314—Pointed perforators

Definitions

  • Appl. No.: 182,380 A needle roller to that purpose is described in which at least two needle combs are attached on or in the roller surface at mutually equal distances, which combs each [3-0]
  • Apphcafion Pnomy Data consist of a row of needles adjacently arranged in a sup- Oct. 8, I970 Netherlands 7014809 p and Provided i p h p points y g on one line and parallel to the roller axis, each needle hav- [52] US. Cl 225/97, 83/660, 225/93 mg a diameter of 10 75 m and reaching beyond the [51] Int. Cl.
  • the invention relates to a needle roller for the fibrillation of a splittable plastics film.
  • Such a needle roller is known in the art.
  • split fibres manufactured with the aid of it can, on a limited scale, serve as a substitute for natural fibres and are applied as a miltifilament; in an appropriate way they can also be used as a material for coarse fabrics.
  • Relatively fine fibres can be manufactured by greatly increasing the relative speed of the needle roller in respect of that of the plastics film.
  • the invention enables checking rupture, thus removing the restrictions described above.
  • the needle roller according to the invention is characterized in that itis provided with at least two needle combs attached on or in the roller surface at mutually equal distances and each consisting of a row of needles adjacently arranged in a support, and provided with torpedo-shaped points lying on one line and parallel to the roller axis, each needle having a diameter of IO 75 am and reaching beyond the su'pportover a length of maximum four tir'nes the diameter of the needle.
  • micro needles preferably have a diameter of 20 50 um and can be made of any appropriate hard or hardened metal, of graphite whiskers, silicium carbide whiskers and similar hard materials having a great abrasion resistance.
  • the micro needles are made of wolfram, however.
  • the torpedo-shaped points on these needles have a height equal to approximately the diameter of the needle.
  • the micro needles had been made of wolfram with a thickness of am.
  • the protruding point length was abt. 100 m.
  • the point-to-point distance of the needles in each comb amounted to 100 am.
  • a fibrillate was obtained with a fine, uninterrupted net structure, whose substantially uniform fibre width amounted to abt. 30 am.
  • the fibres had a soft grip and displayed no glitter.
  • the strength of the yarn obtained amounted to 39 g/tex.
  • the same split flim was also fibrillated with the customary needle roller into an average fineness that was comparable with that obtained according to the invention.
  • the strength of this product amounted to 8.5 g/tex.
  • the strength of the yarn according to the invention that is abt. 4.5 times greater must be attributed to the absence of broken filaments.
  • the film velocity can be equal to that with the customary techniques.
  • FIG. 1 a perspective view of a needle roller with needle combs
  • FIG. 2 part of a needle comb on a strongly enlarged scale.
  • a roller is indicated, in the surface of which six recesses 2, regularly distributed over the roller periphery, are provided.
  • a needle comb 3 is inserted and clamped in a way known in the art.
  • Such a needle comb of which in FIG. 2 a part is shown on a stongly enlarged scale, consists of a holder 4, in which in a known way needles 5 are inserted.
  • Each needle has a diameter 8 of i0 am and protrudes above upper surface 6 of holder 4 over a distance 7, which maximal is equal to four times diameter 8 of needle 5.
  • Each needle Shas a torpedo-shaped point, whose length 9 is approminately equal to diameter 8 of the needle.
  • Fixing a needle comb 3 into a recess 2 of roller 1 enables displacementinto a direction parallel to as well as perpendicular to the roller axis. As a result needle combs 3 can be adjusted such that in fibrillating an optimal result is reached.
  • each needle being attached on or in said roller surface with said needles in respective combs in circumferential alignment, each needle (a) being made of tungsten, (b) having a stem diameter of 10-75 microns, (c) protruding beyond the roller surface by a maximum length of four times said stem diameter, and (d) being provided with a paraboloid-shaped point, said point having a height approximately equal to said stem diameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Pens And Brushes (AREA)
  • Laminated Bodies (AREA)
US00182380A 1970-10-08 1971-09-21 Needle roller for the fibrillation of a splittable plastics film Expired - Lifetime US3747817A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7014809A NL7014809A (xx) 1970-10-08 1970-10-08

Publications (1)

Publication Number Publication Date
US3747817A true US3747817A (en) 1973-07-24

Family

ID=19811259

Family Applications (1)

Application Number Title Priority Date Filing Date
US00182380A Expired - Lifetime US3747817A (en) 1970-10-08 1971-09-21 Needle roller for the fibrillation of a splittable plastics film

Country Status (12)

Country Link
US (1) US3747817A (xx)
AT (1) ATA863771A (xx)
AU (1) AU457917B2 (xx)
BE (1) BE773597A (xx)
CA (1) CA972121A (xx)
DE (1) DE2149877A1 (xx)
FR (1) FR2109854A5 (xx)
GB (1) GB1290289A (xx)
IT (1) IT939958B (xx)
NL (1) NL7014809A (xx)
SE (1) SE376565B (xx)
ZA (1) ZA716771B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184619A (en) * 1976-12-22 1980-01-22 Wm. R. Stewart & Sons (Hacklemakers) Limited Cutting device
CN106149076A (zh) * 2015-04-27 2016-11-23 陈路 一种用于制造ptfe纤维的裂膜副
US20220136139A1 (en) * 2016-03-03 2022-05-05 Teijin Aramid B.V. Process and device for splitting a tape

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184619A (en) * 1976-12-22 1980-01-22 Wm. R. Stewart & Sons (Hacklemakers) Limited Cutting device
CN106149076A (zh) * 2015-04-27 2016-11-23 陈路 一种用于制造ptfe纤维的裂膜副
US20220136139A1 (en) * 2016-03-03 2022-05-05 Teijin Aramid B.V. Process and device for splitting a tape

Also Published As

Publication number Publication date
NL7014809A (xx) 1972-04-11
GB1290289A (xx) 1972-09-27
ZA716771B (en) 1972-08-30
SE376565B (xx) 1975-06-02
ATA863771A (de) 1975-12-15
DE2149877A1 (de) 1972-04-27
CA972121A (en) 1975-08-05
IT939958B (it) 1973-02-10
AU3425271A (en) 1973-04-12
FR2109854A5 (xx) 1972-05-26
AU457917B2 (en) 1975-02-13
BE773597A (nl) 1972-04-07

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