Abstract: A composite polymer composition comprising partially crystallized carbon black. The composition exhibits superior thermal transfer properties in plastic formulations. The polymer precursor exhibits excellent rheology when compared to similar compositions comprising traditional carbon blacks. The composite polymers provide for higher loading of more thermally conductive carbon blacks in a variety of composite polymer compositions.

Abstract: A plane source blackbody is provided. The plane source blackbody comprises a panel, a black lacquer, and a carbon nanotube layer. The panel comprises a first surface and a second surface, and the first surface is opposite to the second surface. The black lacquer is located on the first surface. The carbon nanotube layer is located on a surface of the black lacquer away from the first surface. A method of making the plane source blackbody is also provided.

Abstract: A wire harness that includes a connector in which a connection end of a single-core wire electrical cable and a connection end of a twisted wire electrical cable are welded to each other and are covered by a heat shrinkable tube, wherein the connector includes a separator between the connection end of the twisted wire electrical cable and the heat shrinkable tube, the separator being made of metal and being configured to separate the connection end of the twisted wire electrical cable from the heat shrinkable tube.

Abstract: The lens hood used in combination with a camera on a back face of a windshield has a bottom wall spaced below the windshield and having an upper face turned toward the windshield, and a flat heating element carried on the upper face of the bottom wall. The surface of the bottom wall of the lens hood facing the windshield has a scattered light-capturing structure, and the surface of the heating element, as part of the bottom wall, at least partially forms this structure. The heating element is embedded in the bottom wall of the lens hood, so that the heating element completely or at least partially forms the upper face of the bottom wall.

Abstract: An electrical resistance heater assembly includes a heater housing forming a channel having a longitudinal axis for a fluid such as air to pass through and a heater support plate forming first and second levels in the heater housing. A first mica board assembly supporting a ribbon heater is mounted to the heater support plate at the first level and a second mica board assembly supporting a ribbon heater is mounted to the heater support plate at the second level. The first level is positioned adjacent an inlet of the heater housing and the second level is positioned adjacent an outlet of the heater housing. The first level and a side of the heater housing form a passageway for air to enter the heater housing and be directed to the ribbons of the second level, thereby allowing air to bypass the heater ribbons of the first level.

Abstract: The invention provides a sheath heater for reducing magnetic field drastically using destructive interference, in which a electrical-heating wire with terminals connected to both ends thereof is inserted in a metal tube so as to expose the terminals on both ends of the metal tube and insulating powder is filled so as to keep the inserted electrical-heating wire and the metal tube from touching each other, and two wires of the electrical-heating wire have one ends connected to each other so as not to touch each other, and the terminals connected to the ends are exposed to one of two ends of the metal tube. Since two electrical-heating wires having opposite directions are disposed in the metal tube and the generated the magnetic field act in opposite directions with respect to each other, they can be reduced drastically.

Abstract: A wall mounted electric heater includes a substrate, a heat insulated sheet, a heating element, at least two electrodes, and an enclosure. The heat insulated sheet is disposed on a surface of the substrate. The heat insulated sheet has a geometrical surface with at least one groove or protrusion thereon. The heating element is disposed on the heat insulated sheet. The heating element includes a carbon nanotube layer structure. The at least two electrodes are electrically connected with the heating element. The enclosure fixes the substrate, the heat insulated sheet, and the heating element therein.

Abstract: An anti-icing system includes a component surface having a composite structure including a composite layer, and at least one heating element formed within the composite layer, wherein the heating element is configured to provide a transfer of heat to the component surface.

Abstract: A heating device having an improved heat resistance structure is provided. The heating device may include a heating element that generates heat, and an elastic conductive part that applies electricity to the heating element. A connector may be provided between the elastic conductive part and the heating element to preclude direct contact between the heating element and the elastic conductive part. The heating element may be fixed to one side of the connector, and the elastic conductive part may be fixed to the other side of the connector to allow current applied from the elastic conductive part to flow to the heating element.

Abstract: A heat generation system and a method of curing an adhesive for an electrical generator rotor during a rotor rewind operation are provided. The heat generation system includes a heating source in contact with a pole of the electrical generator rotor to heat the pole, thereby reducing heat loss from the adhesive to the pole. The heat generation system also includes at least one holding arrangement holding the heating source in contact with the at least one pole. The method includes applying an adhesive onto an electrical generator rotor and utilizing a heat generation system to provide heat to the electrical generator rotor. The method further includes placing a heating source in contact with the pole, holding the heating source in contact with the pole using a holding arrangement, heating the pole by activating the heating source, and heat curing the adhesive.

Abstract: Provided is an electrode support structure in which local heating can be prevented from occurring in a workpiece during the electric heating. The electrode support structure is usable for applying a load to the electrodes used for the electric heating of a metal plate, and comprises at least two members, i.e., a first member to which the electrodes are fixed and a second member which receives the load from the first member or connects the first member to a load means. The support structure in which the two members are joined to each other through an elastic member can uniformly apply the load to the electrodes for electric heating so that the electrodes can uniformly contact with the workpiece, whereby the workpiece can be uniformly heated.

Abstract: The present invention relates to a ceramic-coated heater in which the outer surface of a heater rod is coated with ceramic to improve the physical properties thereof including durability, corrosion resistance, and the like, thereby enabling the heater to be used in water or air. The outer surface of the heater rod is coated with a ceramic composition to which an acrylic corrosion resistant wax is added, thereby strengthening the bonding force of the coating layer film, and thus improving the physical properties thereof including durability, corrosion resistance, and the like to enable the heater to be used in water. Therefore, the ceramic-coated heater of the present invention enables high thermal conductivity using less current and reduces energy consumption so that it can be utilized in a wide variety of industrial fields.

Abstract: An apparatus for heating structure or areas adjacent such structure, such as a roof on a building for example, exposed to varying weather conditions and methods of making and use of the apparatus. The heating apparatus can include a heating element and heat supplying components. In one embodiment, the heating apparatus also includes a heatable cover panel and fasteners or other fastening components or materials for securing the heating element and cover panel to the structure. The heat supplying components may include one or more heater cable or heater cable sections penetrating one or more heater cable channels in the heating element. The apparatus may also utilize various insulating and other materials, including paint on exposed surfaces of the apparatus.

Abstract: A sealant curing apparatus is disclosed. In one embodiment, the apparatus includes a processing object panel, a panel supporting unit supporting the processing object panel and a voltage applying unit including a first electrode and a second electrode positioned on the panel supporting unit via the processing object panel interposed therebetween and having different polarities. The processing object panel includes: i) a conductive layer pattern including a heating unit that includes a lattice (grid) pattern, a connecting unit coupled to the first electrode and the second electrode, and a coupling unit connecting the heating unit and the connecting unit and ii) a sealant formed according to the heating unit.

Abstract: An electrically heated aerosol-generating system for receiving an aerosol-forming substrate includes a heating element including a first electrically conductive element electrically insulated from a second electrically conductive element by an electrically insulating portion. The first and second elements are elongate and are electrically connected to each other by an electrically resistive portion. At least one electrically conductive element and the electrically resistive portion are arranged such that they are at least partially in contact with the aerosol-forming substrate.

Abstract: A heater includes a substrate, a plurality of first electrode down-leads, a plurality of second electrode down-leads and a plurality of heating units. The plurality of first electrode down-leads are located on the substrate in parallel to each other and the plurality of second electrode down-leads are located on the substrate in parallel to each other. The first electrode down-leads cross the second electrode down-leads and define a plurality of grids. One heating unit is located in each grid. Each heating unit includes a first electrode, a second electrode and a heating element. The heating element includes a carbon nanotube structure.

Abstract: A medium-voltage heating element assembly. The medium-voltage heating element assembly can include a dual core having an inner core and an outer core. Segments comprising the inner core and the outer core can be staggered. Furthermore, the dual core can include a notch-and-groove interface to prevent axial rotation of the inner core and/or inner core segments relative to the outer core and/or outer core segments. A bushing of the heating element assembly can include a stepped region, and the bushing can interface with the dual core along the stepped region.

Abstract: There is disclosed a self-regulating electric heater assembly arranged to heat an electrically conductive substrate such as a flexible substrate of shape memory alloy for use as an actuator. The heater assembly comprises a plurality of substantially rigid PTC elements arranged in spaced-apart relation to one another in a flexible array, said PTC elements each having a contact surface arranged in contact with the substrate and being urged against said substrate so as to remain in contact with the substrate upon flexure of the substrate. The substrate serves as one of a pair of electrical conductors electrically connected to the PTC elements for the supply of electric current to the PTC elements.

Abstract: Provided is a surface heater using a strip type surface heating element and a fabricating method thereof, in which the surface heater can be embodied into a thin film form using a metallic surface heating element which has a specific resistance value appropriate as a heat wire and is formed of a strip style, where the strip type surface heating element can be sequentially produced at an inexpensive cost. The surface heater includes: the strip type surface heating element in which a number of strips which are obtained by slitting a metallic thin film are arranged with an interval in parallel with each other and both ends of each adjacent strip are connected with each other; and an insulation layer which is coated on the outer circumference of the strip type surface heating element in a plate form.

Abstract: A system for heating a countertop includes a heater comprising a plastic film having a patterned heating element disposed thereon, the patterned heating element defining a resistive path on the plastic film shaped to provide closely-spaced heating traces and shaped to be affixed to an underside of the countertop. The system also includes a control unit electrically connectable to the heating element via a wire, the control unit configured to deliver a direct current signal having a predetermined voltage level to the heating element according to a user selectable power level.

Abstract: A band heater assembly for heating an object includes a band heater that extends around at least a portion of a perimeter of the object. The band heater includes a cable and a band. The cable includes a resistive element, a first cable end and a second cable end. The resistive element generates thermal energy based on a current received from a power source. The first cable end and the second cable end are connected to respective ends of the band heater assembly. The band is connected to the cable and transfers a first portion of the thermal energy to an exterior surface of the object. At least a portion of the cable is exposed from the band heater to contact the exterior surface when the band heater assembly is connected to the object.

Abstract: A heating element includes a support made of flexible material and a flexible grid structure with an electrically conductive paste disposed on the support.

Abstract: A substrate heat treatment apparatus includes a heat-treating plate having a flat upper surface, support devices formed of a heat-resistant resin for contacting and supporting a substrate, a seal device disposed annularly for rendering gastight a space formed between the substrate and heat-treating plate, and exhaust bores for exhausting gas from the space. The support devices are formed of resin, and the upper surface of the heat-treating plate is made flat, whereby a reduced difference in the rate of heat transfer occurs between contact parts and non-contact parts on the surface of the substrate. Consequently, the substrate is heat-treated effectively while suppressing variations in heat history over the surface of the substrate.

Abstract: Disclosed is a heater device for thermally welding suture strands, including: a substrate extending from a first end to a second end along a substrate axis, and having a substantially planar heater support surface; a joinder layer disposed on the heater support surface; a heater element extending from a first end to a second end along a heater axis thereof and disposed on the joinder layer, the heater element being a layer and being coupled to the support surface by the joinder layer; an electrical interface including a first electrically conductive element coupled to the first end of the heater element, and a second electrically conductive element coupled to the second end of the heater element. In some embodiments, the heater element is elongated along the heater axis.

Abstract: A band heater assembly for heating an object includes a band heater that extends around at least a portion of a perimeter of the object. The band heater includes a cable and a band. The cable includes a resistive element, a first cable end and a second cable end. The resistive element generates thermal energy based on a current received from a power source. The first cable end and the second cable end are connected to respective ends of the band heater assembly. The band is connected to the cable and transfers a first portion of the thermal energy to an exterior surface of the object. At least a portion of the cable is exposed from the band heater to contact the exterior surface when the band heater assembly is connected to the object.

Abstract: A method for forming a longitudinal subsurface heater includes longitudinally welding an electrically conductive sheath of an insulated conductor heater along at least one longitudinal strip of metal. The longitudinal strip is formed into a tubular around the insulated conductor heater with the insulated conductor heater welded along the inside surface of the tubular.

Abstract: A ceramic heater includes a heating resistor including a first conducting portion and a second conducting portion which face each other and a ceramic base in which the heating resistor is embedded. The first conducting portion includes a first burr which extends from the first conducting portion and is located between the first conducting portion and the second conducting portion. The second conducting portion includes a second burr which extends from the second conducting portion and is located between the second conducting portion and the first conducting portion. At least a part of the first and second burrs is spaced apart from the line linking a starting point of the first burr and a starting point of the second burr in a cross-section perpendicular to a conduction direction of the first and second conducting portions.

Abstract: An insulated conductor heater may include an electrical conductor that produces heat when an electrical current is provided to the electrical conductor. An electrical insulator at least partially surrounds the electrical conductor. The electrical insulator comprises a resistivity that remains substantially constant, or increases, over time when the electrical conductor produces heat. An outer electrical conductor at least partially surrounds the electrical insulator.

Abstract: An axial resistance sheathed heater is presented. The axial resistance sheathed heater includes a retaining sheath having a first end and a second end and a resistance wire completely disposed within the retaining sheath. The heater further includes a first conductor rod partially disposed within the retaining sheath and extending beyond the first end of the retaining sheath, the first conductor rod in direct electrical communication and direct mechanical communication with the resistance wire; and a second conductor rod partially disposed within said retaining sheath and extending beyond the second end of the retaining sheath, the second conductor rod in direct electrical communication and direct mechanical communication with the resistance wire. The resistance wire, the first conductor rod and the second conductor rod comprise a circuit achieving a power to voltage rating of about 5000:24.

Abstract: A Positive Temperature Coefficient (PTC) rod assembly and a preheater incorporating the same. The PTC rod assembly includes a negative terminal and a positive terminal coupled with opposite surfaces of a PTC rod, the negative and positive terminals being spaced apart from and parallel to each other; a PTC element interposed between and being in electrical contact with the negative and positive terminals, an insulating film adhered to exposed portions of the negative and positive terminals, which are coupled with the PTC rod, and a PTC rod housing. The PTC rod housing stores the PTC rod therein, the negative and positive terminals and the PTC element coupled with the PTC rod, and the insulating film adhered to the PTC rod. The PTC rod assembly is used stably even when a high voltage is applied thereto. A short circuit is prevented from occurring between the two terminals due to contact.

Abstract: A heat generating element for an electrical heating device of a motor vehicle includes a positional frame which forms a receptacle in which a PTC element is accommodated, and two contact plates abutting on oppositely situated sides of the PTC element. A heat generating element has a sheet metal cover that is connected to the positional frame. Also provided are a frame, which has oppositely situated side openings for the passage of a medium to be heated, and a layer structure, which is arranged in the frame and which comprises layers of corrugated-rib and heat generating elements, such that the heat generating element has at least one PTC element arranged between two parallel contact plates. The electrical heating device is protected against EMC via sheet metal covers that are arranged on both sides of the heat generating element and between the corrugated-rib elements and the contact plates.

Abstract: The invention relates to a glow plug comprising a housing in which an inner conductor is disposed, a metal sleeve which is inserted into the housing, and a ceramic glow pin which is disposed in the metal sleeve, wherein the two ends of the glow pin protrude from the metal sleeve and the rear end of the pin is connected to the inner conductor, and wherein the metal sleeve has a tapering section at the rear end, the section enclosing a tapering section of the glow pin. According to the invention, the glow pin is pressed into the metal sleeve. The invention further relates to a method for connecting a pin made of functional ceramic to a metal sleeve.

Abstract: A material comprises: a first component having a first positive temperature coefficient of resistance characteristic; and a second component having a second positive temperature coefficient of resistance characteristic, the second positive temperature coefficient of resistance characteristic being different from the first positive temperature coefficient of resistance characteristic, the proportions of the two components being such that the material has a positive temperature coefficient of resistance characteristic which is a combination of the first and second positive temperature coefficient of resistance characteristics of the first and second components.

Abstract: A heater includes a resistor including a heat-generating portion, one or more leads joined to end portions of the resistor, and an insulating base body which covers the resistor and the leads, and a joining portion between the resistor and the leads includes a region where the resistor is spaced apart from the insulating base body by way of the leads over a whole circumference of the resistor when viewed in cross section of the joining portion.

Abstract: A microfluidic device for droplet manipulation includes a substrate, a plurality of electrically addressable thin-film electrodes disposed on the substrate, at least one of the plurality of electrodes comprising a heating element in the form of a patterned electrode. A hydrophilic region is disposed in or above a portion of the heating element. The hydrophilic region may be permanent or electronically actuable. The thin-film electrodes have multi-function capabilities including, for instance, heating, temperature sensing, and/or sample actuation.

Abstract: A heating resistor element component has a substrate and an adhesive layer provided on the substrate and including an adhesive and gap members arranged substantially uniformly in the adhesive. A heat storage layer is laminated on the substrate through intermediation of the adhesive layer so that the gap members maintain a distance between surfaces of the substrate and the heat storage layer constant. At least one heating resistor formed on the heat storage layer has a heating portion that generates heat. A cavity is provided in a region of the adhesive layer and interposed between the surfaces of the substrate and the heat storage layer. The cavity functions as a heat insulating layer for regulating an inflow of heat from the heat storage layer to the substrate.

Abstract: A high-capacity positive temperature coefficient heater, may include a plurality of positive temperature coefficient rods, wherein each of the positive temperature coefficient rods has a built-in positive temperature coefficient element that generates heat when electric power is supplied thereto, a plurality of heat-radiating fins attached to either side of the positive temperature coefficient rods along a longitudinal direction thereof, an upper housing coupled to one ends of the positive temperature coefficient rods, and a lower housing coupled to the other ends of the positive temperature coefficient rods, wherein the heat radiating fins are bonded to the positive temperature coefficient rods by heat conductive adhesive.

Abstract: A cartridge type heater is provided with at least one hot wire coil (13), which has two coreless coil strands (11, 12), which extend in an insulating material (50) along the two sides of a carrier wall (14). The heater includes an insulating material that is coordinated with the internal diameter of a metal jacket (2). The hot wire ends (9, 10) are provided with terminals projecting from the same end of the metal jacket (2). The hot wire coils (11, 12) are electrically connected to one another in the area of an end edge of the carrier wall (14). This edge is located in the closed end area of the metal jacket (2) and the coils are guided by spacers (45) distributed at the longitudinal edges of the carrier wall (14). At least the terminal-side end of the dimensionally stable carrier wall (14) is provided with an attached coil holder (15, 15/1), to which the hot wire ends (9, 10) are fastened under tensile stress. This keeps the windings of the hot wire coil (13) spaced apart from each other.

Abstract: A heat generation system and a method of curing an adhesive for an electrical generator rotor during a rotor rewind operation are provided. The heat generation system includes a heating source in contact with a pole of the electrical generator rotor to heat the pole, thereby reducing heat loss from the adhesive to the pole. The heat generation system also includes at least one holding arrangement holding the heating source in contact with the at least one pole. The method includes applying an adhesive onto an electrical generator rotor and utilizing a heat generation system to provide heat to the electrical generator rotor. The method further includes placing a heating source in contact with the pole, holding the heating source in contact with the pole using a holding arrangement, heating the pole by activating the heating source, and heat curing the adhesive.

Abstract: A heater probe assembly, a metallic glow plug assembly therewith and method of constructing the heater probe assembly is provided. The metallic glow plug assembly includes a metal shell having a through bore and a metal sheath extending between a distal end and a terminal end. The terminal end of the metal sheath is fixed in the through bore of the shell. Further, an electrode is provided having an end with a heating element attached to thereto. The heating element and end of the electrode are received in the sheath. A packing powder is disposed in the sheath about the heating element. Further, a ceramic seal has an outer surface attached to the sheath by a braze joint and an inner surface attached to the electrode by a braze joint. The ceramic seal provides a hermetic seal between the packing powder and an environment external to the sheath.

Abstract: The present invention relates to a sheet-shaped heat and light source. The sheet-shaped heat and light source includes a carbon nanotube layer and at least two electrodes. The at least two electrodes are separately disposed on the carbon nanotube layer and electrically connected thereto. Moreover, a method for making the sheet-shaped heat and light source and a method for heating an object adopting the same are also included.

Abstract: Provided is a defrost heater using a surface heat emission element of a metal thin film having a fast temperature response performance and a low thermal density, to thereby use an environment-friendly refrigerant, and that performs quick temperature rising and cooling during performing a defrost cycle, to thereby quickly restart a refrigeration cycle and thus greatly reduce time required for the defrost cycle, and a fabricating method thereof, and a defrost apparatus using the same. The defrost heater includes: a strip type surface heat emission element made of a strip type metal thin plate; an insulation layer that coats the outer circumference of the strip type surface heat emission element; and a heat transfer board on one side surface of which the surface heat emission element on the outer circumferential surface of which the insulation layer has been coated is installed, and that contacts evaporator fins so that heat generated from the surface heat emission element is transferred to an evaporator.

Abstract: A heating element for an electrical appliance, such as an electric razor. The element has a hollow metallic sleeve having first and second sides. The first side of the sleeve has greater thermal mass than the second side of the sleeve. A positive temperature coefficient ceramic element is located within the sleeve and held in thermal contact with the sleeve by a compressed portion of the sleeve.

Abstract: A uniform heating assembly including at least one first insulative substrate, at least one first common terminal, at least one second common terminal and a multiplicity of conductive filaments at least partially embedded in the at one insulative substrate and extending at least mainly along both electrically parallel and geometrically parallel paths between the at least one first common terminal and the at least one second common terminal.

Abstract: The preferred embodiment utilizes metal coated high strain fabric reinforcement including but not limited to fiberglass, cotton fiber, or other materials that can undergo deformation, and various resin or elastomer compounds to create a conductive polymer whose resistivity and resistance remain essentially constant under a strain of approximately 0-150% or more. Additionally, the preferred embodiment utilizes a method of imprinting, depositing, etching, or embossing a design or pattern of conductive metal on fabric used in composites. The use of designs of conductive metals wrapped around a deformable core and the unique features of elastomeric polymers allows for their use as a flexible circuit board, formable heaters, and other various uses.

Abstract: A heating structure includes an opening that surrounds a heating element and a heat transfer element. Each heat transfer element is disposed between an exterior surface of the heating element and an interior surface of the opening. A clamping mechanism is used to clamp each heating element against a heat transfer element. Each heat transfer element partially surrounds a heating element and is configured to create at least two elongated and spatially separate contact regions along a length of the heating element. The at least two contact regions form a line of contact between the heating element and the interior surface of the opening when the heating element is clamped against the heat transfer element. The at least two contact regions allow the heating element to transfer heat to the opening and to the tooling device. The clamping mechanism may also be used to transfer heat to the tooling device.

Abstract: An electrothermal transfer device includes a substrate, a plurality of electrothermal components and a heating circuit. The electrothermal components are disposed on a surface of the substrate and arranged in a pattern. The heating circuit is electrically connected to the electrothermal components. In an electrothermal transfer method, at first, a transfer substrate is disposed on a workpiece substrate. Then, the electrothermal transfer device is disposed on the transfer substrate so that the electrothermal components contact with the transfer substrate. Thereafter, the heating circuit is used to heat the electrothermal transfer components so that the transfer substrate is heated to be transferred to the workpiece substrate. The electrothermal transfer device and the electrothermal transfer method can reduce cost.

Abstract: An electric heater (100, 200, 300, 1600, 1700, 2200) has an outer jacket (101, 201, 301, 1601, 1701, 2201) and an electric heating element (102, 202, 302, 2202), which can be supplied with an electric current by at least one connecting wire (106, 107, 206, 207, 306, 307, 406, 506, 606, 706, 806, 906, 1006, 1106, 1206, 1306, 1406, 1506, 1606, 1607, 1608, 1706, 1806, 2206, 2207), arranged at least in some sections within the outer jacket (101, 201, 301, 1601, 1701, 2201). The connecting wire (106, 107, 206, 207, 306, 307, 406, 506, 606, 706, 806, 906, 1006, 1106, 1206, 1306, 1406, 1506, 1606, 1607, 1608, 1706, 1806, 2206, 2207) has a cavity, in which a section (104, 105, 204, 205, 2204, 2205) of the electric heating element (102, 202, 2202) or an electric feed line (330, 331) to the electric heating element (302) is accommodated.

Abstract: A portable device which generates heat and which can be used alternatively as a corded, plug-in device or as a cordless, fuel-powered device. The device has dual heating capabilities—each of which is powered by a unique cartridge. For use as a plug-in device an electric cartridge that connects the device to an adapter is utilized, whereas for use as a portable device a fuel cartridge is utilized for supplying a hydrocarbon fuel to support combustion. Use of one of the cartridges prevents the use of the other.

Abstract: A double-sidedly bondable planar element which has an electrical contacting layer via which it is self-regulatingly intrinsically heatable and at the same time has a high flexibility. The particular features of this planar element are that the planar element in the storage condition is adhesive on one side only, and is therefore particularly easy to handle, and that, on bonding, the adhesive passes through cutouts in the contacting layer, and the planar element thus becomes double-sidedly bondable. The invention further provides a method for the bonding of this planar element, including as a key step the passage of the adhesive through the cutouts in the contacting layer, thus turning a single-sidedly adhesive planar element into a double-sidedly adhesive planar element.