Abstract:
In a sandwich structure which comprises two outer layers (1) fastened to core material (2) which is cut into shaped pieces, preferably to form a checkered pattern, which define gaps (4) therebetween, the gaps (4) are filled with an elastomeric, rubber-like material of a thermosetting resin type. This material is preferably introduced into the gaps in a flowable state, either by injecting the filler under pressure or by suction.
Abstract:
The invention relates to means for providing thermal camouflage of irregular emission pattern as a supplement to camouflage within the visual and near infra-red region. According to the invention, this camouflage means comprises a supplementary set of material pieces (12) of desired configuration which are intended to be fastened in a desired pattern onto existing masking material (10), for example a net. The emission coefficient of the material pieces (12) differs substantially from the emission coefficient of the masking material (10), preferably by a difference of at least about 0.3. The invention also relates to masking material on which such material pieces are attached.
Abstract:
According to the present invention, a web of material presenting periodic string parts (1), is provided with garnishing material (2) by forming loops of garnishing material around the net yarn, and subsequently fastening the loops together, preferably by applying high frequency energy. This is preferably effected in an automatic machine, in which string parts together with accompanying garnishing (2) are inserted into apertures (140) formed on a drum by means of electrodes (70, 71) which are mutually separated during the process of insertion and which are then clamped together and supplied with high frequency energy, whereafter the electrodes (70, 71) are again separated to release the string material and garnishing.
Abstract:
A camouflage material having radar screening properties is comprised of a warp-knitted fabric, so-called Raschel fabric, which includes yarn (2) into which metal fibres have been spun. The yarn is laid with a lay-out technique such that the sum of the extensions of the yarn will be generally the same in each direction in the plane of the fabric. The fabric is suitably stabilized with a sheet (1) that lacks metal fibres, which may either be a yarn layer in the warp-knitted fabric or a through-knitted fabric, preferably a nonwoven fabric coated with a reflective metal layer.
Abstract:
According to the invention, a web of material presenting periodic string parts is provided with garnishing material by forming loops of garnishing material around the net yarn, and subsequently fastening the loops together by applying high frequency energy. This is effected in an automatic machine in which string parts together with accompanying garnishing are inserted into apertures formed on a drum by means of electrodes which are mutually separated during the process of insertion and which are then clamped together and supplied with high frequency energy, whereafter the electrodes are again separated to release the string material and garnishing.
Abstract:
PCT No. PCT/SE88/00577 Sec. 371 Date Apr. 17, 1990 Sec. 102(e) Date Apr. 17, 1990 PCT Filed Oct. 27, 1988 PCT Pub. No. WO89/03971 PCT Pub. Date May 5, 1989.A camouflage covering intended for affixing to military objects, particularly heated surfaces of tanks. It consists of layers held together by means of neelding and comprises a super-absorbent fibers, so that it can be kept cool by evaporating water previously applied. By including fibers, it may have radar camouflage properties. A substantial pile obtained by needling will give a non-reflecting surface.
Abstract:
According to the present invention, a web of material presenting periodic string parts (1), is provided with garnishing material (2) by forming loops of garnishing material around the net yarn, and subsequently fastening the loops together, preferably by applying high frequency energy. This is preferably effected in an automatic machine, in which string parts together with accompanying garnishing (2) are inserted into apertures (140) formed on a drum by means of electrodes (70, 71) which are mutually separated during the process of insertion and which are then clamped together and supplied with high frequency energy, whereafter the electrodes (70, 71) are again separated to release the string material and garnishing.
Abstract:
L'invention se rapporte à un moyen de produire un camouflage thermique d'une configuration à émission irrégulière, afin de compléter le camouflage dans la zone visuelle et à infrarouge proche. Selon cette invention, ce moyen de camouflage comprend un ensemble supplémentaire de pièces de matériau (12) d'une forme désirée qui sont destinées à être fixées en une configuration désirée sur un matériau de masquage existant (10), par exemple un filet. Le coefficient d'émission des pièces de matériau (12) diffère sensiblement de celui du matériau de masquage (10) de préférence par une différence d'au moins 0,3. L'invention se rapporte aussi à un matériau de masquage auquel les pièces de matériau sont fixées.
Abstract:
Selon l'invention, une bande de matière présentant des parties (1) de corde périodiques, est dotée d'une matière (2) de garniture par formation de boucles de matière de garniture autour du fil du filet, et ensuite par attache des boucles ensemble, de préférence par application d'une énergie de haute fréquence. Cette opération est de préférence exécutée par une machine automatique, dans laquelle des parties de corde ainsi qu'une garniture (2) d'accompagnement sont insérées dans des orifices (140) formés sur un tambour au moyen d'électrodes (70, 71), lesquelles sont mutuellement séparées pendant le processus d'insertion, sont serrées ensemble et reçoivent une énergie de haute fréquence, après quoi on sépare à nouveau les électrodes (70, 71), afin de libérer la corde et la matière de garniture.