Custom Heat Protection Curtains for Industrial High-Temperature Processes

A heat protection curtain does not necessarily have to consist of one continuous textile surface. The technically appropriate design depends largely on how open and accessible the protected process area needs to remain.

A closed curtain provides extensive textile separation. If workpieces, conveyor systems, pipes or other components need to pass through the protected area regularly, strip or thread curtain systems can provide a more flexible solution.

Combinations of different designs as well as cut-outs, overlaps, segmented constructions and individually adapted contours are also possible. The construction is therefore not selected from a fixed standard range, but developed according to the thermal and functional requirements of the individual project.

A heat protection strip curtain consists of individually arranged vertical textile strips. This creates a thermal barrier without completely closing the process opening with a continuous textile surface.

This design is particularly suitable where workpieces, conveyed materials, components or moving equipment need to pass through the protected area regularly.

The width, length, number and overlap of the strips can be engineered according to the application. The material quality and surface treatment can likewise be selected to suit the specific thermal exposure.

The result is a flexible solution for furnace openings, inlet and outlet zones, conveyor lines and thermally exposed machine areas where accessibility and heat protection need to be combined.

A high-temperature thread curtain creates the shielding surface using a large number of temperature-resistant textile threads or fibre strands.

Individual elements can locally move aside as components or workpieces pass through the opening. This keeps the opening highly flexible and accessible while maintaining a textile barrier between the process area and its surroundings outside the actual passage point.

Thread curtain systems are therefore particularly suitable for continuous production processes, conveyor systems, furnace inlets and outlets, and changing component geometries.

Thread material, density, length and arrangement are engineered specifically for the project according to the thermal exposure and required accessibility.

Where continuous material passage is not required, a closed heat protection curtain can provide a large-area textile barrier between the heat source and the area requiring protection.

Such curtains can be used to shield machinery, equipment components, furnace areas, work zones and temperature-sensitive components.

In addition to simple rectangular curtains, multi-part constructions, cut-outs, overlaps and geometrically adapted contours can be manufactured.

Dimensions, edge finishing and fastening systems are engineered according to the existing structure and the required installation or opening function.

Around furnaces, molten materials and other high-temperature process areas, radiant heat can account for a significant proportion of the total thermal exposure.

For these applications, heat protection curtains with reflective aluminium surfaces can be used. The metallic surface can reflect part of the incident thermal radiation and thereby reduce heat transfer to the shielded side.

Important design parameters include the temperature of the heat source, distance, orientation, exposure time and surrounding conditions.

Material selection is therefore based on the actual heat-transfer conditions rather than solely on a maximum temperature rating.

The performance of a heat protection curtain depends to a large extent on the material used. Fingerhuth processes different glass fabrics, high-temperature glass fabrics and silica materials for different temperature ranges.

Depending on the application, the textile substrates can be combined with different surfaces and coatings. These include, for example, silicone, PU, PTFE, aluminium foil and special high-temperature finishes.

Selection is not based solely on the maximum temperature. Radiant heat, mechanical stress, flexibility, moisture and other environmental conditions can also be relevant. The result is not a universal standard curtain, but an application-specific textile heat protection system.

A heat protection curtain can only perform reliably if its fastening system is appropriate for the installation. The suspension system is therefore considered from the beginning as an integral part of the curtain design.

Depending on the application, brass or stainless-steel eyelets, textile loops, rod pockets, reinforced clamping edges or magnetic fastenings can be used.

Existing pipes, frames, wire ropes, machine components or customer-supplied support structures can also be incorporated into the fastening concept. For movable applications, we can additionally evaluate suitable rail, roller or project-specific guidance systems.

In mechanical and plant engineering, thermally exposed areas often do not follow standardized geometries. Cut-outs, different heights, restricted installation space or moving equipment components can require individually engineered solutions.

Textile heat protection curtains can therefore be geometrically and structurally adapted to the existing machine or installation.

Drawings, CAD data, hand sketches, photographs or existing samples can be used as the basis for engineering. Existing curtain systems can also serve as a basis for technical reassessment or replacement manufacturing. This enables us to produce both individual custom curtains and repeatable series components for machinery and equipment manufacturers.