EP1458911A1 - Ceinture de securite tissee - Google Patents

Ceinture de securite tissee

Info

Publication number
EP1458911A1
EP1458911A1 EP02787751A EP02787751A EP1458911A1 EP 1458911 A1 EP1458911 A1 EP 1458911A1 EP 02787751 A EP02787751 A EP 02787751A EP 02787751 A EP02787751 A EP 02787751A EP 1458911 A1 EP1458911 A1 EP 1458911A1
Authority
EP
European Patent Office
Prior art keywords
seat belt
threads
belt webbing
core
component
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.)
Granted
Application number
EP02787751A
Other languages
German (de)
English (en)
Other versions
EP1458911B1 (fr
Inventor
Rigo Bosman
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.)
Diolen Industrial Fibers GmbH
Original Assignee
Diolen Industrial Fibers GmbH
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 Diolen Industrial Fibers GmbH filed Critical Diolen Industrial Fibers GmbH
Publication of EP1458911A1 publication Critical patent/EP1458911A1/fr
Application granted granted Critical
Publication of EP1458911B1 publication Critical patent/EP1458911B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00Woven fabrics designed to make specified articles
    • D03D1/0005Woven fabrics for safety belts
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00Physical properties
    • D10B2401/04Heat-responsive characteristics
    • D10B2401/041Heat-responsive characteristics thermoplastic; thermosetting

Definitions

  • the present invention relates to a woven seat belt with threads in the warp direction and in the weft direction.
  • Woven seat belt straps or belt straps and methods for their production are known for example from WO 01/48285 A1. They usually consist of multifilaments in the warp direction. In the weft direction, monofilaments or a combination of multifilaments and monofilaments are used for the purpose of stiffening. Such stiffening in the transverse direction in fabrics for seat belts is necessary so that the belt does not fold, which would impair its function. In particular, this measure prevents the seat belt from being obstructed by the guide holders and during winding.
  • fabrics are flat structures that consist of two or more thread systems, warp and weft crossing at right angles, and are produced on a loom or a weaving machine.
  • weft means the entirety of the threads required for producing a fabric and running from edge to edge in the finished fabric, that is to say in the transverse direction or weft direction. Thread is to be understood to mean those linear textile structures which can consist of both multifilaments and monofilaments.
  • monofilaments as weft threads also has disadvantages.
  • polyester threads with diameters in the range of 0.2 to 0.3 mm are used as monofilaments in fabrics for seat belts.
  • the high stiffness of these monofilaments on the one hand leads to problems during the weaving process, in addition, the fabrics and thus the seat belts made from them also become relatively thick. This increase in thickness due to the introduction of the monofilaments as weft threads in the fabric at least partially nullifies the advantages described above, in particular the running properties of the belt.
  • the present invention solves this problem by providing a woven seat belt webbing - as described in the opening paragraph - wherein the multifilaments of the threads in the weft direction predominantly have a bicomponent structure, which structure consists of two polymeric components with different melting points, the lower melting component at least that Surface of the individual filaments forms.
  • the seat belt according to the present invention consequently contains a multifilament as weft thread, which has a bicomponent structure.
  • Bikompo- Element structures are well known to the person skilled in the art. As a rule, these are filaments that are composed of two polymeric components. Such filaments are also referred to as heterofilaments, conjugated fibers or filaments or as composite fibers or filaments.
  • the structure of these bicomponent structures can be quite different and is also known to the person skilled in the art. For example, bicomponent structures are present as “side-by-side” structures or also as “skin-core” structures or “core-shell” structures. A number of other arrangements are known in the art and need not be explained further.
  • Multifilaments that contain bicomponent structures are easy to process during the weaving process because, in contrast to the relatively thick monofilaments, they have a significantly lower stiffness. This largely avoids the problems that arise in the prior art when manufacturing the fabric for seat belts.
  • the multifilaments in the weft lie between the warp threads in a flattened configuration.
  • the seat belt webbing is less thick than one with a monofilament in the weft. This reduced thickness significantly improves the handling of the belt, in particular the winding behavior, which also leads to an increase in safety.
  • the bicomponent structure is a core-shell structure, the shell component having a lower melting point than the core component.
  • the core component is essentially a polymer which is selected from the group comprising polyesters, polyamides and polyolefins or their copolymers.
  • the jacket component also consists essentially of a polymer which is selected from the group comprising polyesters, polyamides and polyolefins.
  • the weft thread consist of a core-sheath structure with polyester as the core component and polyamide 6 as the sheath component.
  • Combinations between polymers of the same class of compounds, e.g. Polyester as the core and co-polyester as the sheath component or polyamide 6.6 as the core and polyamide 6 as the sheath or polypropylene / co-polypropylene combinations are possible as long as the condition that the core component has a higher melting point than the sheath or skin component is met is.
  • the difference in melting temperatures between the two components should not fall below 10 ° C, preferably the difference is greater than about 30 °. Differences in the melting points of the components for the core and sheath of at most about 100 ° C. are generally completely sufficient.
  • a particularly preferred embodiment of the seat belt webbing is obtained if the bicomponent structure has a core-sheath structure, the core component consisting essentially of polyethylene terephthalate and the sheath component consisting essentially of polybutylene terephthalate.
  • the difference in melting temperatures is about 40 to 50 ° C, with the jacket component having a melting point of about 220 ° C.
  • the bicomponent structure has a core-shell structure in which the core component consists of polyethylene terephthalate and the shell component consists of a polyether ester.
  • the core component consists of polyethylene terephthalate and the shell component consists of a polyether ester.
  • a copolymer of polybutylene terephthalate and polytetrahydrofuran is outstandingly suitable as the polyether ester.
  • Such a polyether ester has a melting point between 190 and 200 ° C.
  • the ratio of core to shell component in the bicomponent structures used with preference is between 85/15 and 65/35 vol / vol, for example 70/30 vol / vol.
  • the multifilaments with a bicomponent structure advantageously have a total titer between 400 and 1700 dtex, preferably between 400 and 700 dtex. In a particularly preferred embodiment, these multifilaments have a titer of 800 dtex.
  • the woven seat belt straps are subjected to a thermal treatment such that the sheath component of the multifilaments with bicomponent structure running in the weft direction at least partially melts.
  • the temperature for the thermal treatment should be chosen so that the core component is not melted, or is essentially not melted, i.e. the strength of the weft threads essentially achieved by the core component is retained.
  • a thermal connection of the multifilaments with bicomponent structure forming the weft threads is then formed in the fabric in the weft direction. In the finished fabric, these multifilaments thus lead to the transverse stiffness of the seat belt, like the monofilaments used in the prior art as weft threads, but without having the disadvantages in the manufacture of the fabric that are caused by the monofilaments.
  • Fig. 1 The structure of a woven seat belt webbing, drawn from a microscopic image (in about 30 times magnification), containing a
  • Fig. 2 The structure of a woven seat belt webbing, drawn from a microscopic image (in approximately 30 times magnification), containing a
  • the woven seat belt webbing shown in FIG. 2 is characterized by a smaller thickness and, at the same time, increased flexural rigidity, as a result of which the thickness of the seat belt webbing can be reduced even further without the mechanical properties being impaired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Emergency Lowering Means (AREA)
EP02787751A 2001-12-12 2002-11-21 Ceinture de securite tissee Expired - Lifetime EP1458911B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20120160U 2001-12-12
DE20120160U DE20120160U1 (de) 2001-12-12 2001-12-12 Gewebtes Sicherheitsgurtband
PCT/EP2002/013043 WO2003050337A1 (fr) 2001-12-12 2002-11-21 Ceinture de securite tissee

Publications (2)

Publication Number Publication Date
EP1458911A1 true EP1458911A1 (fr) 2004-09-22
EP1458911B1 EP1458911B1 (fr) 2008-02-13

Family

ID=7965091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02787751A Expired - Lifetime EP1458911B1 (fr) 2001-12-12 2002-11-21 Ceinture de securite tissee

Country Status (5)

Country Link
EP (1) EP1458911B1 (fr)
AT (1) ATE386146T1 (fr)
AU (1) AU2002352079A1 (fr)
DE (2) DE20120160U1 (fr)
WO (1) WO2003050337A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10235227A1 (de) * 2002-08-01 2004-02-19 Johann Berger Verfahren zur Herstellung eines gewebten Gurtbandes
EP1849898B1 (fr) * 2005-02-18 2012-12-05 KB Seiren, Ltd. Structure tissee d' une forme de courroie et son procede de fabrication
JP4761363B2 (ja) * 2005-11-28 2011-08-31 タカタ株式会社 シートベルト装置
JP2007146325A (ja) * 2005-11-28 2007-06-14 Takata Corp 製織ベルト及びシートベルト装置
JP4664193B2 (ja) * 2005-11-28 2011-04-06 タカタ株式会社 乗員拘束ベルト用ウェビング、シートベルト、シートベルト装置
JP4666495B2 (ja) * 2005-11-28 2011-04-06 タカタ株式会社 乗員拘束ベルト用ウェビング、シートベルト、シートベルト装置
GB2440530A (en) * 2006-07-31 2008-02-06 Autoliv Dev Non-woven safety belt

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000234233A (ja) * 1999-02-09 2000-08-29 Toray Ind Inc シートベルト用ウェッビング
JP4734737B2 (ja) * 2001-03-07 2011-07-27 タカタ株式会社 エアベルト及びエアベルト装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03050337A1 *

Also Published As

Publication number Publication date
DE50211709D1 (de) 2008-03-27
WO2003050337A1 (fr) 2003-06-19
EP1458911B1 (fr) 2008-02-13
AU2002352079A1 (en) 2003-06-23
ATE386146T1 (de) 2008-03-15
DE20120160U1 (de) 2003-04-24

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