Stab-resisting material, a coated carrier to be used therewith, and clothing made of said material

#The invention relates to a stab-resisting material consisting of a carrier coated with solid particles, which is provided on a packet of fabrics. The invention furthermore relates to the coated carrier material to be used therewith, and to clothing comprising such stab-resisting material, and to the padding based on the materials according to the invention, which is fitted into such clothing.

#From International patent application WO 94/09656 a material is known which is capable of withstanding cuts. In particular gloves for use by surgeons are made from said material. The surgeon must be protected against slipping of the knife he is using to carry out an operation, or against injury by fractured bones sticking out and the like. The material to be used for such gloves is built up of several layers, in particular an outside layer, an inside layer, and an intermediate layer. Grains of an abrasive material are provided between said layers. The grains used have a diameter of maximally 0.15 mm. It is important thereby that the surgeon who wears the gloves made of such a material, besides being protected by the glove, also retains the sense of touch in his hands. This is only possible if the material from which the glove is made is thin, and in the aforesaid International patent application an overall thickness of the material of maximally 1.5 mm is indicated. Gloves of this kind are capable of providing the intended effect for a surgeon. The object of the present invention, however, is to provide a material which is capable of withstanding forceful stabbing with a knife, so that the material aimed at by the invention can be used in clothing for police officers, soldiers and the like personnel.

#From International patent application WO 96/03277 a material is known which provides protection against stabs of a knife and against the impact of bullets and the like, so that such a material can be used in a bulletproof vest which is also capable of withstanding knife stabs. The core of the material is obtained by coating a carrier of Aramid with a ceramic by means of plasma sputtering. Thus a ceramic coating having a thickness of maximally 100 μm (less than 0.1 mm), preferably 20-40 μm, is applied to the layer of plastic material. The presence of the ceramic coating on the carrier of plastic material makes the article of clothing comparatively stiff. The object of the invention is to provide an article of clothing which is flexible and easy to wear, but which nevertheless provides the required resistance against knife stabs.

#A bituminous adhesive is applied to a carrier fabric having a weight of 200 g/m2, which is built up of 930 dTex Twaron CT yarn, by means of a brush. The adhesive is “Cinducoat” adhesive (marketed by Cindu Chemicals of Uithoorn (NL)). The adhesive is applied in an amount of 130 g/m2 of fabric. The abrasive particles are strewn into the wet film of adhesive. For this purpose 750 g/m2 of silicon carbide having a particle size of about 0.4 mm are used. A particle size such as the above is known in practice by the designation F40. The particles are marketed by the firm of Orkla Exolon of Orkanger (Norway). The amount of 750 g/m2 is the amount which remains behind on the film of adhesive after the unbonded excess particles has been removed. Once the excess silicon carbide particles has been removed, the adhesive is dried at room temperature. After about 4.5 hours the adhesive is sufficiently dry.

#Thus, a coated carrier has been obtained. It is possible to apply a second film of adhesive to the coated carrier, so that the particles are properly fixed on both sides. To this end a film of adhesive is applied as thinly as possible, in an amount which is approximately half the amount of adhesive that has been applied in the first processing step.

#The coated carrier obtained in example 1 is placed on a packet of fabrics consisting of 24 layers of Aramid fabric. The coated carrier will at all times be positioned on the packet of fabrics in such a manner that a knife will first strike the abrasive particles before coming into contact with the carrier. The various layers of Aramid fabric in the packet of fabrics correspond with the carrier material used in example 1. The packet of fabrics with the coated carrier present thereon is enveloped in a polyester lining material, so as to be able to handle the whole more easily. The material according to the invention, which consists of a packet of fabrics and a coated carrier provided thereon, can thus be readily slipped into an article of clothing as padding.