Abstract: The invention regards a material having a three-dimensional surface built up by bulgings arranged regularly or irregularly mutually adjacently, and which have approximately conical form. It is thus accomplished that the brightness of the material is little dependent on the view angle, in contrast to what is the case with plane surfaces, even if painted with matte camouflage paint.

Abstract: According to the present 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, preferably by applying high frequency energy. This is preferably 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: A camouflage material having radar screening properties is comprised of a warp-knitted fabric, so-called Raschel fabric, which includes yarn 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 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: According to the invention, a web of material presenting periodic string Darts is provided with garnishing material 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 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, where after the electrodes are again separated to release the string material and garnishing.

Abstract: The invention relates to the joining of one web, e.g., of camouflage material to a carrier net or the like with the aid of fastener devices comprising male fastener parts (10) provided with pins or like elements which are hammered into complementary holes in female fastener parts (12). The female and male fastener parts are banded together by means of plastic wires moulded along the sides of the fastener parts and are separated subsequent to being brought to a fastener applying position (40) from a respective magazine (30,41). the male fastener parts are banded with the pins positioned in the direction of the band, while the holes provided in the female fastener parts face at right angles to the band direction. The bands are advanced by means of pawl-mechanisms (32-36 and 43-48) respectively). The invention relates to the banded fastener devices, a method of manufacturing the devices and a machine for applying the devices.

Abstract: A camouflage device adapted to fold and unfold and to assume the shape of a dummy object when in the unfolded configuration for camouflaging an object, includes a frame for supporting a camouflage netting, with the frame being adaptable for displaying irregular configuration and including flexible rod structures having one end detachably secured to a crown member and another end adapted for placement upon a suitable location of the object to be camouflaged. Each of the rod structures is made of an elastic band of fiber-reinforced plastic material or steel to allow flexible configuration and random shaping of the frame.

Abstract: In the manufacture of PVC cellular plastic, a liquid plastic mixture is admixed with fibres in an amount of at most 0.050 percent by weight fibres, preferably carbon fibres having a length of about 1 cm, which fibres are distributed in the expanded cellular plastic isotropically with respect to both position and alignment. The cellular plastic is effective to dampen electromagnetic radiation within the radar range to at least 1-3 dB per cm.

Abstract: The invention relates to the joining of one web, e.g. of camouflage material to a carrier net or the like with the aid of fastener devices comprising male fastener parts provided with pins or like elements which are hammered into complementary holes in female fastener parts. The female and male fastener parts are banded together by means of plastic wires moulded along the sides of the fastener parts and are separated subsequent to being brought to a fastener applying position from a respective magazine. The male fastener parts are banded with the pins positioned in the direction of the band, while the holes provided in the female fastener parts face at right angles to the band direction. The bands are advanced by means of pawl-mechanisms.