EP0261109A1 - Procede de production d'une bande large/etroite - Google Patents

Procede de production d'une bande large/etroite

Info

Publication number
EP0261109A1
EP0261109A1 EP86901877A EP86901877A EP0261109A1 EP 0261109 A1 EP0261109 A1 EP 0261109A1 EP 86901877 A EP86901877 A EP 86901877A EP 86901877 A EP86901877 A EP 86901877A EP 0261109 A1 EP0261109 A1 EP 0261109A1
Authority
EP
European Patent Office
Prior art keywords
webbing
heat
thermoshrinking
weft
intended
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.)
Withdrawn
Application number
EP86901877A
Other languages
German (de)
English (en)
Inventor
Jukka Reijonen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0261109A1 publication Critical patent/EP0261109A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D3/00—Woven fabrics characterised by their shape
    • D03D3/06—Fabrics of varying width
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/567—Shapes or effects upon shrinkage

Definitions

  • the object of the present invention is a method of manufacturing wide/narrow webbing, the width of which varies within desired dimensions and at desired intervals according to intended use.
  • Webbing is generally known as a product of even width in which form it is usually appropriate for its eventual uses. There are, however, numerous uses in which it is and would be sensible to use webbing the width of which varies at certain intervals as desired.
  • the function of the wider part in the webbing is to reduce the surface pressure caused by the webbing in, for example, carrying something on a shoulder and the advantage of the narrower part of the webbing is that it can be more easily fastened to small buckles or to places where there is little space, for example, to radiophones, cameras etc.
  • the webbing is woven directly into wide/narrow form (DE-B 1217289) .
  • the manufacturing methods relating to 1-3 require separate slow work stages and are thus uneconomic.
  • the manufacturing method put forth in 4 can only be carried out with the old so-called unautomatic shuttle machines which are in the process of being withdrawn entirely from webbing-producing weaving mills.
  • the aim of the invention is to establish a method by which webbing of varying width can be manufactured according to conventional methods with the widely used automatic needle weaving machines. According to the present invention this is achieved in such a way that at least a part or several parts of the webbing are woven with weft yarn the fibre material of which is thermoshrinking and that the webbing woven in this manner is heat-treated to shrink the yarns and to solidify the final form of the webbing.
  • the advantage of the invention is that the width of the wide/ narrow webbing can be kept virtually constant during the weaving process which means that the webbing can be woven with standard- structure automatic so-called needle weaving machines, which are almost exclusively the type used in webbing-producing weaving mills nowadays and which are in the process of being adopted completely. If the width of the webbing varies during the weaving process (DE 1217289), weaving cannot be carried out with needle weaving machines. Weaving the webbing is and will in practice be possible only with the said automatic needle weaving machines considering the economy of weaving, the question of capacity and the fact that leading webbing weaving machine manufacturers have ceased making so-called unautomatic shuttle machines.
  • thermoshrink ⁇ ing property of the weft yarn and an appropriate finishing tech ⁇ nique for each particular use are taken advantage of. These are the primary factors with which the wide/narrow form of the web ⁇ bing is accomplished. Already known filling properties of different weaves are also utilized.
  • thermoshrinking and thermally unshrinkable - which are woven into the webbing at certain intervals as required by the intended use.
  • the thermally unshrinkable weft is woven into that part of the webbing which is intended to be wide and the thermoshrinking weft into the part intended to be narrow and into the border area where the width changes.
  • the weave structure can thus be selected according to use in the part of the webbing intended to be wide.
  • the filling properties of the border area weave should change gradually in a desired manner from 100% filling, which begins from the wider part of the webbing and decreases gradually towards the narrower part of the webbing.
  • the filling of the weave determines the width of the webbing or the filling is so incomplete that the shrinkage of the weft yarn determines the minimum width of the webbing.
  • the filling of the narrower part becomes 100% due to the shrinkage of the weft yarn which means that once the webbing has been filled as said above and has reached the said width, it can no longer shrink during heat-treatment.
  • the minimum width of the webbing is determined by the thermoshrinking proper ⁇ ty of the weft yarn selected and the temperature prevailing during the heat-treatment and time.
  • the webbing is heat-treated by the so-called continuous i.e.
  • the webbing is fed into a warming cupboard, the temperature and feeding speed of which can be regulated. These warming cupboards are also used for the finishing of the webbing and thus the webbing can be given the usual resin treatment in connection with the heat-treatment if necessary as regards the use.
  • the thermoshrinking parts of the weft have shrunk to be the narrow part of the webbing and the thermally unshrinkable parts have not shrunk and the finished product is wide/narrow webbing.
  • two different weft yarn thicknesses can also be used.
  • the end product is required to be a firm and unfolding wide webbing part, in this part can be used weft yarn thicker by number which will give the webbing body.
  • weft yarn thinner by number than the thermally unshrink ⁇ able weft in the wide part can be used.
  • the filling of the webbing structure is thus also reduced which facilitates thermal shrinking.
  • the webbing is heat-treated at intervals in a desired manner, whereupon the heat- treated part of the webbing shrinks to a width determined either by the filling of the weave or the thermal shrinkage of the weft and thus becomes the narrower part of the webbing.
  • the area affect ⁇ ed by heat-treatment may be restricted in such a way that the shrinking takes place gradually.
  • heat-treatment methods appropriate for the purpose such as e.g. heating drums or plates, the surfaces of which are designed so that the webbing will come into contact with heat only in a particular desired and restricted area.
  • the filling property of the webbing weave may be constant along the entire length of the webbing.
  • the basic assumption is, however, that the filling of the weave may not be 100% since then the weft yarn cannot shrink and the webbing will not take a wide/narrow form.
  • the weave filling is, for example, 50% this allows for a shrinkage of 50% and thus the webbing can shrink to a half of its original width.
  • the filling of the narrower part of the webbing manufactured in this way is always greater than the filling of the wider part. Due to the foregoing, the narrower part will always feel harder than the wider part. This need not, however, be a negative property as regards the eventual use.
  • thermoshrinking weft yarn only one type of thermoshrinking weft yarn is used.
  • the filling property of the weave does not, however, remain constant along the entire length of the webbing but instead to the part of the webbing intended to be wider is woven a 100% filling which prevents the shrinking of the weft yarn during heat- treatment.
  • the webbing can also be subjected to continuous heat-treatment, based on the fact that the filling of the weave regulates the shrinkage of the weft yarn during heat-treatment.
  • the 100% filling of the wide part prevents shrinkage and the incomplete filling of the narrow part allows the product to shrink.
  • the finished webbing always feels stiff, which is often a property required by eventual uses.
  • the webbing woven according to this method can be heat-treated at intervals as in method 2. In that case it should, however, be noted that the heat-treatment must be synchronized according to the weave structure, that is, the degree of filling of the webbing.
  • the yarns used as raw materials are The yarns used as raw materials.
  • the eventual ' use of the webbing ⁇ is- a-determining factor in selecting the yarns.
  • the warp yarns the requirements determined by the use concerning raw materials and thicknesses of yarns can be followed as far as is on the whole possible with woven products.
  • the only technical restriction is that the warp yarns should withstand with as small a shrinkage as possible the temperature at which the actual thermoshrinking weft yarn is heat-treated and the webbing acquires its final wide/narrow form. Should the warp yarns also shrink, this would also change the filling properties of the structure, thus preventing the shrink ⁇ ing of the weft and would be a negative factor.
  • the temperature will be between 80-200 C during the heat-treatment depending on the types of the thermoshrinking yarn.
  • Several known textile fibres can withstand this temperature without shrinking, which means that there is a wide choice of different raw materials for the warp.
  • the same above-mentioned selecting principle also applies to selecting the thermally unshrinkable weft yarn of example 1.
  • thermoshrinking weft yarn type In synthetic textile raw materials, that is, yarns can be found several alternatives with a considerable thermal shrinkage and from which can be selected a thermoshrinking weft yarn type according to use as regards both shrinking and other properties.
  • polyvinylchloride fibres which shrink 55-60% already at a temperature of 100%, which means that with this weft yarn type it is possible to shrink the webbing by heat-treatment to below 50% of its original width.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

Procédé de production de bandes dont la largeur varie, consistant à tisser la bande de manière conventionnelle à partir de fils de chaîne et de trame. Au moins quelques uns des fils de trame sont thermo-rétrécissables, ce qui permet d'obtenir le rétrécissement désiré de la bande en soumettant cette dernière à un traitement thermique.
EP86901877A 1986-03-06 1986-03-06 Procede de production d'une bande large/etroite Withdrawn EP0261109A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI1986/000024 WO1987005342A1 (fr) 1986-03-06 1986-03-06 Procede de production d'une bande large/etroite

Publications (1)

Publication Number Publication Date
EP0261109A1 true EP0261109A1 (fr) 1988-03-30

Family

ID=8556394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901877A Withdrawn EP0261109A1 (fr) 1986-03-06 1986-03-06 Procede de production d'une bande large/etroite

Country Status (2)

Country Link
EP (1) EP0261109A1 (fr)
WO (1) WO1987005342A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312132A (en) * 1990-01-26 1994-05-17 Pillet Jean Francois Gas cushion and method and apparatus for its manufacture
ATE435602T1 (de) * 2006-03-09 2009-07-15 Arc Teryx Equipment Inc Lasttragesystem
WO2010043868A2 (fr) * 2008-10-15 2010-04-22 Stretchline Intellectual Properties Limited Tissus élastiques et leurs procédés et appareil de fabrication
FR3007994A1 (fr) * 2013-07-05 2015-01-09 Beal Ets Harnais et bretelles de securite

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1217289B (de) * 1962-03-14 1966-05-18 Kruse & Soehne K G Gurtband
DE2541672A1 (de) * 1974-09-19 1977-03-24 Wira Leeds Fa Verfahren zur formung von stoffteilen, insbesondere fuer kleidungsstuecke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8705342A1 *

Also Published As

Publication number Publication date
WO1987005342A1 (fr) 1987-09-11

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Effective date: 19871208