Abstract: Polymer foams based on polyetherimides (PEI) meet the legal requirements of the aerospace industry for both the interior and exterior of aircraft.

Abstract: A composition is used for producing novel types of foam in that they combine specifically good flame-retardant properties with a good elongation at break. These novel types of foam are produced from a blend of polyether sulphone (PES) and polyphenylene sulphone (PPSU).

Abstract: Methods for providing a cable closure enclosing a cable splice include wrapping a flexible wrap including a gel layer and a flexible support layer around the cable splice with the gel layer adjacent the cable splice. The gel layer may have an adhesion-reducing substance applied on at least part of a surface of the gel layer facing away from the flexible support layer and a removable cover layer may be applied to a surface of the gel layer facing away from the flexible support layer on which the adhesion-reducing substance is not applied. The wrap is gathered into overlapping wrinkles around at least one longitudinal end of the cable splice without applying heat, other external energy source or catalytic agent to allow the gel layer to seal the at least one longitudinal end of the cable splice.

Abstract: Methods for providing a cable closure enclosing a cable splice include wrapping a flexible wrap including a gel layer and a flexible support layer around the cable splice with the gel layer adjacent the cable splice. The gel layer may have an adhesion-reducing substance applied on at least part of a surface of the gel layer facing away from the flexible support layer and a removable cover layer may be applied to a surface of the gel layer facing away from the flexible support layer on which the adhesion-reducing substance is not applied. The wrap is gathered into overlapping wrinkles around at least one longitudinal end of the cable splice without applying heat, other external energy source or catalytic agent to allow the gel layer to seal the at least one longitudinal end of the cable splice.

Abstract: The invention relates to processes for preparing derivatized and partially derivatized polymethacrylimides. The properties of the material can be adjusted by appropriate selection of the derivatization, in terms of number and type.

Abstract: A flexible wrap (10) for enclosing a cable splice (20) without external heating includes a gel layer (1) and a support layer (2). The wrap has sufficient flexibility to be manually gathered into wrinkles around the smaller parts of the cable-to-splice transition with the gel sealing the resulting enclosure. The support layer (2), which is preferably made of low density polyethylene, provides mechanical strength and facilitates the application of the wrap (10). A vapour barrier layer (3), preferably made of aluminium, may be applied on the support layer (2). A protective layer (4) may be applied on the vapour barrier layer (3). An adhesion-reducing substance (6) may be applied on at least part of the side of the gel layer (1) facing away from the support layer (2) to allow adjustment of the wrap (10) when applied on the cable splice (20). Elastic or rubber tape (11) maybe wound around the applied wrap (10) to compress the gel. A re-enterable closure having a long sealing length may be obtained.

Abstract: A tape for enclosing and sealing an object, such as a cable splice, includes both a gel layer and a rubber layer. Due to the elastic properties of the rubber layer, the gel can be put under compression, which may result in an excellent sealing action. Advantageously the rubber layer may be wider than the gel layer, which may allow adhesive strips to be accommodated adjacent the gel so as to facilitate the application of the tape and to further improve its sealing action.

Abstract: A flexible wrap (10) for enclosing a cable splice (20) without external heating comprises a gel layer (1) and a support layer (2), the wrap having sufficient flexibility to be manually gathered into wrinkles around the smaller parts of the cable-to-splice transition with the gel sealing the resulting enclosure. The support layer (2), which is preferably made of low density polyethylene, provides mechanical strength and facilitates the application of the wrap (10). A vapour barrier layer (3), preferably made of aluminium, may be applied on the support layer (2). A protective layer (4) may be applied on the vapour barrier layer (3). An adhesion-reducing substance (6) may be applied on at least part of the side of the gel layer (1) facing away from the support layer (2) to allow adjustment of the wrap (10) when applied on the cable splice (20). Elastic or rubber tape (11) may be wound around the applied wrap (10) to compress the gel. A re-enterable closure having a long sealing length is obtained.

Abstract: A diaphragm for an electroacoustic transducer has a) a core layer containing poly(meth)acrylimide foam and b) at least one cover layer. The diaphragm is produced by laminating the cover layer with the core layer, using a pressure of 0.4 MPa and a temperature of 160° C., whereby at least the side of the core layer which comes into contact with the cover layer is compressed. The resultant composite is subsequently cooled to a temperature below 80° C., before the pressure is reduced to the ambient pressure. The process can be carried out as a single-step process. The diaphragms produced by this process demonstrate an excellent stability, whereby the cover layers in particular are highly resistant to separation.

Abstract: A reinforcement member (1) for a cable splice is stiff yet resilient so as to attain a position of rest in which it has a substantially C-shaped cross-section leaving a longitudinal opening (2). Two such reinforcement members can be bent around the splice such that one reinforcement member closes off the opening of the other reinforcement member, thus completely surrounding the cable splice.

Abstract: A tape (1) for enclosing and sealing an object (20), such as a cable splice, comprises both a gel layer (3) and a rubber layer (2). Due to the elastic properties of the rubber layer (2), the gel can be put under compression, resulting in an excellent sealing action. Advantageously the rubber layer (2) is wider than the gel layer (3) allowing adhesive strips (4) to be accommodated adjacent the gel so as to facilitate the application of the tape and to further improve its sealing action.

Abstract: Articles and methods are provided for sealing a closure having an opening through which more than one elongate article may project. A body is provided having a plurality of axially extending radially projecting ribs defining, between circumferentially adjacent pairs thereof, locations for receiving one or more of the elongate articles. The body includes longitudinally adjacent parts of resilient material and sealant material.

Abstract: An airbag arrangement comprising: an airbag; a housing (1), formed of plastics material, for containing the airbag in a deflated, folded condition; a cover (5), formed of flexible material, and attached to the airbag housing (1) by a seal around a substantial portion of the periphery of the housing (1). The seal may be by heat or pressure sensitive glue, by ultrasonic or vibration welding or by deformable lugs (9). This arrangement is cheaper to produce and quicker to assemble, and has the advantage of being generally tamper-proof, since any tampering with the package will be immediately evident from detachment of the cover or tears therein.

Abstract: An airbag arrangement comprising: an airbag; a housing (1), formed of plastics material, for containing the airbag in a deflated, folded condition; a cover (5), formed of flexible material, and attached to the airbag housing (1) by a seal around a substantial portion of the periphery of the housing (1). The seal may be by heat or pressure sensitive glue, by ultrasonic or vibration welding or by deformable lugs (9). This arrangement is cheaper to produce and quicker to assemble, and has the advantage of being generally tamper-proof, since any tampering with the package will be immediately evident from detachment of the cover or tears therein.

Abstract: A seal is provided for sealing an aperture in an object through which aperture one or more elongate articles extends. The seal includes a first support member having at least one longitudinally extending channel adapted to accommodate and support an elongate article. A second support member is longitudinally spaced from the first support member. The second support member has at least one longitudinally extending channel corresponding to that of the first support member and a sealing member is positioned between the first and second support members. An elongate article may thus be accommodated within the longitudinal extending channel of the first support member so as to extend through the corresponding channel on the second support member while deforming sealing member.

Abstract: A cable splice closure is provided including first and second casing parts, opposing edges of which may be brought together to close the closure, and a series of protrusions extending along the exterior of the first casing part adjacent to the edge of the first casing part. Also included are a series of openings extending adjacent the edge of the second casing part in an extending wall which, when the closure is closed, overlaps the exterior of the first casing part such that each protrusion is resiliently interlocked with a respective opening. The second casing part further includes a plurality of apertures in its extending wall for receiving a lever to force the casing parts together such that the respective protrusions and openings interlock and to force the casing parts apart such that the respective protrusions and openings disengage.

Abstract: An article includes an object and a sealing member. The object includes a cavity formed therein. The sealing member includes sealant and a carrier to which the sealant is attached. At least one of the carrier and the object includes attachment means whereby the carrier is configured to be attached to the object such that at least a portion of the sealant is retained within the cavity.

Abstract: A cable closure is provided with at least two housing parts which, in use, are brought together, and when brought together provide a cavity for containing sealing material, through which one or more cables may extend into the closure. The cable closure also includes a sealing material which is contained in the cavity upon bringing the housing parts together, and, which seals between the cable (s) and the housing part(s); and at least one resilient member which, in use, is contained in the cavity. When the housing parts are brought together, in use, the resilient member is compressed, and thus causes the resilient member, by its resilience, to apply a compressive force to the sealing material.

Abstract: A method of sealing a duct having a non-uniform cross-section which comprises:(i) positioning within the duct a device for locating a sealing material at a localized portion of an inner surface of the duct, at the non-uniformity; and(ii) positioning within the duct a sealing member than can at least partially block a cross-section of the duct such that the sealing material forms a seal between a portion of the duct and a portion of the sealing member.