{"id":2862,"date":"2020-07-27T07:50:33","date_gmt":"2020-07-27T05:50:33","guid":{"rendered":"https:\/\/cotexx.de\/?page_id=2862"},"modified":"2020-08-20T14:36:15","modified_gmt":"2020-08-20T12:36:15","slug":"heating-fabric-for-tools-and-deicing-composites","status":"publish","type":"page","link":"https:\/\/cotexx.de\/en\/heating-fabric-for-tools-and-deicing-composites\/","title":{"rendered":"Knitted Heating Fabric"},"content":{"rendered":"

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CoTexx\u00ae<\/sup><\/span>\u00a0Heating Fabric
Heating Tools and Deicing Composites<\/i><\/span><\/span><\/h1>\n

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Heizgestrick<\/p>\n

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CoTexx Knitted Heating Fabric Produces:<\/h3>\n

Heat for Composites<\/h2>\n

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Whether hand laminate, prepreg, RTM or infusion – all manufacturing processes for components made of fiber composite materials require heat. Only a few resin systems cure at room temperature. And heat resistance and strength are increased by subsequent tempering in an oven.\u00a0<\/p>\n

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More than Hot Air<\/h3>\n

We bring Heat in Shape<\/h2>\n

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The idea behind CoTexx<\/span>\u00ae\u00a0<\/sup><\/b> Knitted Heating Fabric: generate heat where it is needed. The „flexible heating element from the roll“ is embedded into the GFRP or CFRP laminate close to the surface. If current flows through the heating element, heat is generated evenly across the whole area. It heats the fiber composite component to be hardened or activates the binder of the preform. The result is direct tool heating that does not require water, oil or air as heat transfer medium.<\/p>\n

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CoTexx<\/span>\u00ae\u00a0<\/sup><\/b> Knitted Heating Fabric. Our answer to minimizing cycle time and maximizing energy efficiency. Since 2010.<\/p>\n<\/blockquote>\n

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HEATED AREAS IN Composite COMPONENTs<\/h3>\n

Deicing<\/h2>\n

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Heat does not only support manufacturing processes. There are applications where the final composite parts need to have heating elements integrated in the laminate. CoTexx<\/span>\u00ae\u00a0<\/sup><\/b>heated knitted fabric removes snow and ice from GFRP and CFRP parts. Large components for satellite communication systems or aerodynamic parts in the aerospace industry must function in all weather conditions and thus have to be kept free from ice. Some areas of wind turbines do also benefit from anti-icing or de-icing systems.<\/p>\n

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For CoTexx<\/span>\u00ae\u00a0<\/sup><\/b> Knitted Heating Fabric high-frequency litz wires are processed into a textile. These wires consist of strands, which are individually insulated (enamelled wire). These special wires are also the raw material for vehicle seat heaters. The automotive industry appreciates this technology for safety reasons. After breakage of individual wires, a local overheating (hot spot) is excluded. Therefore the material of the wires for CoTexx<\/span>\u00ae\u00a0<\/sup><\/b> Knitted Heating Fabric is also either 99.9% copper or a resistance alloy, depending on the application.<\/p>\n

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From Seat Heating to Knitted Heating Fabric<\/h3>\n

Proven Technology Adapted to the Fiber Composite Industry<\/h2>\n

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Copper wire, which is coated with a temperature-resistant lacquer layer to insulate it electrically, is called enamelled wire. A bundle of such enamelled wires (strands) is a so-called high-frequency litz wire.<\/p>\n

The automotive industry has been using high-frequency strands as heating element in seat heaters for years. For CoTexx<\/span>\u00ae\u00a0<\/sup><\/b> Knitted Heating Fabric, the same raw material is processed into a textile during a knitting process. Afterwards, our customers mainly in the field of composites integrate the heating fabric in laminates for heating purposes. <\/p>\n

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The advantages compared to a heating made of carbon fiber as heating element are obvious:<\/strong><\/span><\/p>\n

\u2714 local overheating is impossible after the breakage of individual wires<\/p>\n

\u2714 reliable contacting of the wires by soldering<\/p>\n

\u2714 Copper and copper alloys have a high ductility and do not break during processing<\/p>\n

\u2714 High deformability and drapability of the heating fabric due to the mesh structure<\/p>\n

\u2714 By varying the alloy, wire diameter and number of strands, the resistance can be matched to the voltage source (usually 12-230 V DC or AC voltage)<\/p>\n<\/blockquote>\n

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In one word: Flexibility<\/h3>\n

Mould Heating, Temperature Control of Tools, Anti-Icing<\/h2>\n

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Our aim is to offer an „electrical surface heating from the roll“. Flexible and suitable for various applications. Because we are aware that there are numerous processes of manufacturing a component from fiber composite materials. And quantity, component geometry and complexity have a direct influence on the tooling concept.<\/p>\n

CoTexx<\/span>\u00ae\u00a0<\/sup><\/b> Knitted Heating Fabric was developed especially for heating tools and moulds made of CFRP \/ GFRP. Both are utilized e.g. in vacuum infusion methods or hand lamination techniques. Another field of application is preforming technical textiles if binders needed to be activated by heat.<\/p>\n

The requirements regarding the process temperatures are as varied as the production techniques.<\/p>\n

CoTexx<\/span>\u00ae\u00a0<\/sup><\/b> Knitted Heating Fabric is suitable e.g. <\/p>\n

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