Abstract:
A fabric for a seam region of an inflatable air-bag, the fabric comprising fibres formed from polyester and having an elongation at break of around 12 % to 20%, and also having an instantaneous thermal creep above 0.5 % at 100 °C.
Abstract:
A vehicle air-bag (1) comprising first and second layers of fabric (2, 3) which each comprise a plurality of interwoven warp and weft yarns an inlet aperture (4) positioned in at least one of the first and second layers of fabric (2, 3), the inlet aperture (4) being configured to be connected to a source of gas; a chamber (6) which is at least partly provided between the first and second layers of fabric (2, 3), the chamber (6) being in fluid communication with the inlet aperture (4) and configured to be inflated by gas from the inlet aperture (4) and an elongate tether (8) comprising a first portion (9) which is interwoven with at least one warp yarn (10a) in a first part (11) of the air-bag (1) a second portion (12) which is not interwoven with any warp yarns, the second portion (12) of the tether (8) extending from the first part of the air-bag (11) to a second part of the air-bag (1) and a third portion (13) which is interwoven with at least one warp yarn (10b) in the second part of the air-bag (1), such that the interweaving of the first and third portions (9, 13) of the tether (8) modifies the structural properties of the first and second parts of the air-bag (1), wherein at least one of the first and second parts of the air-bag (1) is positioned at or adjacent to the inlet aperture (4).
Abstract:
A fabric for use in the manufacture of an inflatable air-bag, the fabric comprising interwoven warp fibres and weft fibres which are arranged substantially perpendicular to one another, one or more of the warp and weft fibres being at least partially coated with an adhesive substance to increase the friction between the warp and weft fibres at their intersections.
Abstract:
An airbag having an outer skin enclosing at least one gas chamber is disclosed. Said outer skin is being made at least in parts of polymer material with the polymers of the polymer material being made by polymerisation of monomers. In order to reduce the total consumption of fossil based raw materials during the life cycle of a vehicle, at least a part of said monomers are sustainable based monomers being produced from a renewable raw material.
Abstract:
A safety device for use in a vehicle. The safety device comprises an air-bag (5) which is configured to be inflated by a source of gas. At least part of the air-bag(5)is woven and comprises a plurality of generally parallel woven yarns (6). An elongate tether (8) is attached to the air-bag (5) by an attachment arrangement (9). The attachment arrangement (9) comprises a first portion (10) in which part of the tether(8) passes between two adjacent yarns (13, 14) of the air-bag (5) from one side of the air-bag (5) to another side of the air-bag (5) and partly around at least two adjacent yarns (14, 15) on one side of the air-bag(5). The attachment arrangement (9) incorporates a second portion in which the tether (8) is interwoven with a pre-determined number of single adjacent yarns (17, 19 and 21) of the air-bag (5). The attachment arrangement (9)incorporates a third portion in which the tether (8) passes between two adjacent yarns(21, 22) of the air-bag (5) from one side of the air- bag (5) to another side of the air-bag (5) and partly around at least two adjacent yarns (23, 24) on one side of the air-bag(5).
Abstract:
A fabric for an air-bag comprising interwoven sets of warp and weft yarns, wherein the yarns of one of the sets of yarns are tape-like, having a width/depth ratio of at least 1.5, and the yarns of the other set of yarns are not tape-like and have a width-depth ratio less than 1.5.
Abstract:
There is disclosed a safety device for a motor vehicle. The device comprises an inflatable (6) element formed from two opposing layers of fabric (10, 11) and the two layers of fabric are interconnected by a plurality of tether yarns (18) extending between said layers. Each said tether yarn (18) is a composite yarn comprising an outer thread (21) and a core thread (20), with the outer thread (21) being overfed on the core thread (20) and having a higher breaking strength than the core thread (23). The device is preferably configured such that the core threads (20) of the tether yarns (18) break (23) upon inflation of said inflatable element (6), thereby permitting the outer thread (21) to unravel and extend the effective length of the tether yarns (18) between said layers.
Abstract:
A method of forming a fabric for an air-bag, the method comprising the steps of: providing a plurality of yarns, each yarn being formed from a plurality of individual fibres; applying an activatable additive or coating to each yarn, the additive or coating initially not being activated and wherein, prior to activation, the additive or coating presents little or no impedance to relative movement of the fibres within the yarn and, following activation, the additive or coating binds fibres within the yarn to one another to prevent or hinder relative movement of the fibres in the yarn with respect to one another; and passing the yarns through an activation zone, the activation zone including a compressing component which applies a compressive force to the yarns, the additive or coating being activated as the yarns pass through the activation zone so that, following activation of the additive or coating, the yarns each have a substantially flat configuration so as to have a first relatively small cross-sectional dimension (a), and a second relatively large cross-sectional dimension (b).
Abstract:
An air-bag (1 ) is provided with a vent aperture (2). A membrane (3) extends across the vent aperture, the membrane defining a smaller aperture (4) than the vent aperture (2). The periphery of the aperture is defined by a thickened part of the membrane. The membrane is formed of an elastic material such as a silicone rubber material. When a very high pressure exists in the air-bag the vent becomes deformed, thus increasing the size of the aperture defined by the membrane, permitting a relatively large flow of air from the air-bag to reduce the pressure within the air-bag.
Abstract:
An air-bag (1) for use in a vehicle, the air-bag (1) comprising a fabric layer (10) comprising a plurality of interwoven warp and weft yarns; an additional layer (15a) which is at least partly superimposed on a part of the fabric layer (10); and an intermediate layer (16) which is at least partly positioned between the fabric layer (10) and the additional layer (15a), the intermediate layer (16) comprising a mesh structure which is provided with a plurality of cells (17), wherein the cells (17) contain a matter having a lower thermal conductivity than the warp and weft yarns of the fabric layer (10).