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US3607995A - Method for producing terminal structures - Google Patents

Method for producing terminal structures Download PDF

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Publication number
US3607995A
US3607995A US746376A US3607995DA US3607995A US 3607995 A US3607995 A US 3607995A US 746376 A US746376 A US 746376A US 3607995D A US3607995D A US 3607995DA US 3607995 A US3607995 A US 3607995A
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US
United States
Prior art keywords
filaments
base fabric
forming
projecting
headed
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
US746376A
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English (en)
Inventor
Yoshio Chiba
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Individual
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Individual
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Filing date
Publication date
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Publication of US3607995A publication Critical patent/US3607995A/en
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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0023—Woven or knitted fasteners
    • A44B18/0038—Male or hook elements
    • A44B18/0042—Male or hook elements of a mushroom type

Definitions

  • the present invention relates to an improved forming method of spherically swollen headed terminal structures in a separable fastening device of cloths, and more particularly an improved forming method of spherically swollen headed terminal structures in the separable fastening fabrics engaging the loops formed upon the surface of one of two cloths and the spherically swollen headed terminal structures formed upon the surface of the other cloth.
  • the conventional forming method of this kind such as, for instance, US. Pat. No. 3,138,841, consists of a direct heating and melting of the terminal structures of the plurality of piled filaments of thermal plastic resin. These terminal structures are formed upon the surface of one of the base cloths by weaving the plurality of piled filaments into the base cloth, when it is woven.
  • the spherically swollen headed terminal structures made according to the conventional art have the following defects:
  • the filaments formed to have piles upon the surface of the base fabric consist of the extremely slender thermal plastic fiber having diameters about 0.1 mm.0.2 mm., and the length of the piles projecting out of the cloth is about 2 mm.-3 mm. Consequently, the melting technique of these filaments is extremely difiicult. For instance, if the melting heat is excessively high, the filaments will melt and flow off, while the surface of the defects: cloth will be hurt. Reversely, when the heating is insufficient, the spherically swollen headed terminal structures which must fit for engagement, cannot be obtained.
  • the filaments when they are excessively heated, the filaments will be easily carbonized, while the inner structure of the filaments will be fragile and the spherically swollen headed terminal structure will become easily torn off.
  • the melting conditions of the filaments are closely observed, it will become evident that, because the melted part will flow and coagulate in a malformed condition like the melting candle and consequently the malformed spherically swollen headed terminal structure will be formed, its engagement with the loops of the the other cloth becomes too strong and, when separating, the loops often will be cut off, while the spherically swollen headed terminal structures will be damaged.
  • FIGS. I-5 are sectional elevational views showing how the spherically swollen headed terminal structures are gradually formed, in accordance with the present invention.
  • FIG. 6 is a partially enlarged view of the said two cloths showing the engagement of the separable fastening device
  • FIG. 7 is a side view of the apparatus for forming the spherically swollen headed terminal structures
  • FIG. 8 is a side view of another apparatus.
  • a base fabric 1 provided with the spherically swollen headed terminal structures comprises a fabric shown in FIG. 1, wherein into a very common plain fabric woven with web IA and warp 2A, a thermal plastic filament 3A such as polypropylene is woven in a loop-shape to form a plurality of loops 38. After that, the top end of these loops 3A is cut open by the blade arranged on the tip of a loop-forming molding-bar K which is used, as commonly known, when forming the loops 38, so that the loops 3A may be separated into the respective loops 3B, and the plurality of piled filaments will be formed on the surface of the base fabric 1 as shown in FIG. 2.
  • a thermal plastic filament 3A such as polypropylene
  • a viscous liquid film made of pasty material or the like is formed over the surface of the base fabric 1, especially when heating as shown in FIG. 3.
  • a long and narrow fabric 1 as illustrated in FIG. 7 is moved over a plurality of rollers 10, and on its way of advance, it is passed through viscous liquid filled in a tank or container 11, so that a viscous liquid film is formed by surface tension among the piled filaments 3C, as
  • the viscous liquid film 5 corresponding to the length of the piled filaments 3C will be formed on the surface of the base 1.
  • the base fabric 1 is moved by the rollers 10, it is heated by a heat source element M to form the spherically swollen headed terminal structure.
  • the moisture contained in the viscous liquid film 5 which is stretched among the piled filaments 3C is gradually evaporated by the heat coming from the heat source element M and, since the tips of the piled filaments 3C will project out of the viscous liquid film 5 to the extent of its evaporation, its projecting part only will be melted soon to form the spherically swollen headed terminal structure 3D.
  • the base fabric 1 is moved by rollers 10, while the base fabric 1 is pulled over the surface of the comparatively less viscous heating liquid or a similar liquid 58, in which case, the base fabric 1 will slide over the support plate H while the tips of the piled filaments 3C project out of the heating liquid 58 by a certain fixed length, and it is heated from above by the heating source element M, so that the .spherically swollen headed terminal structures are formed on these tips.
  • the piled filaments 3C are suitably preheated by the heating liquid 53, they can reach their melting point soon and the spherically swollen headed terminal structure can be quickly formed on the tips of the piled filaments. Besides, the harmful influence of the heat source element M upon the base fabric 1 can be precluded by the liquid and, since the lower parts of the piled filaments are protected by the liquid, while their tips are gradually melted, no carbonization of these tips will ever be seen. Consequently, the lower parts, i.e., the legs of the completed spherically swollen headed terminal structures 3 will be kept flexible.
  • the tips of the piled filaments 3C are supported from below by the liquid layer and are cooled by the liquid, they will never be deformed, like a melted part of a candle. They will have the globular shape which is required for engagement with the loops. When the two completed base cloths are separated, therefore, no spherically swollen headed terminal structure is ever broken, which no doubt is a great advantage over the conventional method.
  • a method for forming spherically swollen headed filaments on a base fabric of a fabric fastener comprising the steps of:
  • said base fabric having said projecting filaments constitutes an elongated strip.

Landscapes

  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Woven Fabrics (AREA)
US746376A 1968-07-19 1968-07-22 Method for producing terminal structures Expired - Lifetime US3607995A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1760919A DE1760919C3 (de) 1968-07-19 1968-07-19 Verfahren zur Herstellung von Kugelköpfen an den vorstehenden Fadenenden eines zwischen zwei Gewebeflächen vorgesehenen Flächenreißverschlusses
US74637668A 1968-07-22 1968-07-22
GB40830/68A GB1235503A (en) 1968-07-19 1968-08-27 Method of forming spherically headed terminal structures for a separable fabric fastening device

Publications (1)

Publication Number Publication Date
US3607995A true US3607995A (en) 1971-09-21

Family

ID=27181205

Family Applications (1)

Application Number Title Priority Date Filing Date
US746376A Expired - Lifetime US3607995A (en) 1968-07-19 1968-07-22 Method for producing terminal structures

Country Status (3)

Country Link
US (1) US3607995A (de)
DE (1) DE1760919C3 (de)
GB (1) GB1235503A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718725A (en) * 1970-11-17 1973-02-27 Int Knitlock Corp Method for making hook fabric material for fasteners
US3900652A (en) * 1972-05-29 1975-08-19 Kanebo Ltd Male piece of the velvet type fastener
US4070515A (en) * 1971-12-29 1978-01-24 Union Carbide Corporation I-Beam shaped bristled article
US4628709A (en) * 1977-12-05 1986-12-16 Actief N.V. Apparatus and method for producing knitted hook-type fastener material
EP0761116A1 (de) * 1995-08-30 1997-03-12 Ykk Corporation Flächenhaftverschluss und Herstellungsverfahren
US5953797A (en) * 1996-10-09 1999-09-21 Velcro Industries B.V. Hook fasteners and methods of manufacture
US5980230A (en) * 1997-04-11 1999-11-09 Velcro Industries B.V. Forming fastener products
US9609920B2 (en) 2013-09-06 2017-04-04 Kimberly-Clark Worldwide, Inc. Process for modifying a hook profile of a fastening component and a fastening component having hooks with a modified profile

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449761A (en) * 1973-02-07 1976-09-15 Kuesters E Apparatus for treating a web
US4151619A (en) * 1973-02-07 1979-05-01 Eduard Kusters Process for treatment of synthetic textile webs
US4846815A (en) * 1987-01-26 1989-07-11 The Procter & Gamble Company Disposable diaper having an improved fastening device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718725A (en) * 1970-11-17 1973-02-27 Int Knitlock Corp Method for making hook fabric material for fasteners
US3770359A (en) * 1970-11-17 1973-11-06 Int Knitlock Corp Apparatus for the manufacture of hook fabric material for fasteners
US4070515A (en) * 1971-12-29 1978-01-24 Union Carbide Corporation I-Beam shaped bristled article
US3900652A (en) * 1972-05-29 1975-08-19 Kanebo Ltd Male piece of the velvet type fastener
US4628709A (en) * 1977-12-05 1986-12-16 Actief N.V. Apparatus and method for producing knitted hook-type fastener material
US5819391A (en) * 1995-08-30 1998-10-13 Ykk Corporation Surface fastener and method of manufacturing the same
EP0761116A1 (de) * 1995-08-30 1997-03-12 Ykk Corporation Flächenhaftverschluss und Herstellungsverfahren
US5953797A (en) * 1996-10-09 1999-09-21 Velcro Industries B.V. Hook fasteners and methods of manufacture
US6357088B2 (en) 1996-10-09 2002-03-19 Velcro Industries B.V. Hook fasteners and methods of manufacture
US6526633B2 (en) 1996-10-09 2003-03-04 Velcro Industries B.V. Hook fasteners and methods of manufacture
US20030135964A1 (en) * 1996-10-09 2003-07-24 Velcro Industries, B.V., A Netherlands Corporation Hook fasteners and methods of manufacture
US6869554B2 (en) 1996-10-09 2005-03-22 Velcro Industries B.V. Hook fasteners and methods of manufacture
US5980230A (en) * 1997-04-11 1999-11-09 Velcro Industries B.V. Forming fastener products
US9609920B2 (en) 2013-09-06 2017-04-04 Kimberly-Clark Worldwide, Inc. Process for modifying a hook profile of a fastening component and a fastening component having hooks with a modified profile

Also Published As

Publication number Publication date
DE1760919A1 (de) 1971-06-16
DE1760919C3 (de) 1974-03-28
DE1760919B2 (de) 1973-08-30
GB1235503A (en) 1971-06-16

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