Insulation jackets
Insulation jackets from KMT Heiztechnik keep the heat where it belongs — on the component. Three-layer construction from high-temperature-resistant fiberglass textiles, cut and sewn in-house, designed for process temperatures up to 450 °C — mounted without tools and reusable indefinitely.
In-house manufacturing in Kronstorf
Heat belongs in the process — not in the hall.
Every uninsulated heating zone continuously releases heat into the surrounding area — the heater works against the hall, and personnel against the heat. Insulation jackets keep the heat on the component: fewer losses, shorter heat-up times, a noticeably better hall climate and protected surfaces in the operator area.
We manufacture in-house: every jacket is cut and sewn in Kronstorf — a high-temperature-resistant E-glass fabric on the inside, a binder-free needled E-glass mat with low thermal conductivity as the core, and a coated fabric on the outside that repels water, oil and dirt. A proven design — in any shape your component needs.
Sewn in-house
Every jacket is cut and sewn by us in Kronstorf — to your dimensions, with cutouts for connections and sensors.
Less loss, more safety
Reduces heat release from uninsulated heating zones into the hall and lowers the surface temperature in the operator area — touch protection included.
Proven 3-layer construction
High-temperature glass fabric on the inside, binder-free E-glass needled mat as the core, repellent fabric on the outside — non-flammable and physiologically safe.
Retrofitted in minutes
Wrap around the component, close the hook-and-loop fastener, done — removed just as quickly for maintenance and reusable indefinitely.
Specifications
Technical data
High-temperature-resistant insulation textiles for demanding thermal applications. Every jacket is sewn individually for you based on these technical standards.
| Design | One proven standard design — shape and dimensions to match your component |
| Inner layer (hot side) | Textured E-glass fabric, high-temperature finished |
| Insulation core | E-glass needled mat, binder-free needled |
| Outer layer | Coated E-glass fabric — water-, oil- and dirt-repellent |
| Process temperature (design) | 450 °C |
| Temperature resistance of fabric | up to 500 °C |
| Thermal conductivity of insulation core | 0.039 – 0.13 W/mK (50 – 500 °C mean temperature) |
| Fire behavior | Non-flammable insulation core, physiologically safe |
| Additional benefit | Also dampens sound |
| Fastening | Generously overlapping hook-and-loop fastener, tool-free |
| Manufacturing | Cut and sewn in-house in Kronstorf |
Safety notes
Mounting & safety
Proper mounting is a prerequisite for the function, service life and operational safety of your heating system.
!Insulate with good judgment
The jacket works best when it fits tightly and the fastener overlaps generously — open gaps let heat escape unused. Just as important is what remains free:
- Connections, sensors and fittings remain accessible via built-in cutouts.
- Zones with direct material discharge and deliberately cooled areas are not insulated.
After retrofitting, observe the temperature behavior of the zone: due to the lower losses, the control needs less power; in processes with high shear heat, the temperature level can shift. The repellent outer fabric can simply be wiped clean — the jacket remains reusable for years.
Mounting check
- 01Clarify dimensions & cutouts in advance (a sketch or photo is enough)
- 02Place the jacket in tight contact
- 03Close the fastener with generous overlap
- 04Keep connections & sensors freely accessible
- 05Do not insulate discharge and cooling zones
- 06Observe temperature behavior after retrofitting
For every geometry
Designs & configurations
Heating zone jackets
The classic for cylinder heating zones on injection molding and extrusion machines — with cutouts for connections and sensors.
Pipe and bend jackets
For pipelines, bends and transitions carrying hot media — fitted tightly over the entire contour.
Flat insulation & covers
For flat hot surfaces, heated tools and complete assemblies — as an overlay or removable cover.
Special shapes
Valves, flanges, fittings and complex contours — made to sketch, photo or template.
Options & tailoring
Because we sew in-house, every jacket is made exactly to match your component — not the other way around.
Expertise
Application areas
Heating zones on injection molding and extrusion machines
Extruder barrels
Heated tools
Pipelines and pipe bends
Vessels and ducts for hot media
Valves, flanges and fittings
Contact protection on hot surfaces
Facility climate and energy efficiency
Technical documentation
* Documentation available on request already now — please use our form.
FAQ
Frequently asked questions
No. We manufacture insulation jackets from a quantity of one — every jacket is a custom fit for your exact component anyway. From a single extruder barrel to equipping an entire machine fleet, we handle every batch size on a made-to-order basis.
In most cases, your own measurements are sufficient: diameter or circumference, the length of the section to be insulated, and the position of connections and sensors. Photos and a simple hand sketch help us position cutouts correctly. For complex geometries, we clarify the approach directly with you.
Yes, that is part of the custom manufacturing. We incorporate cutouts for band-heater connections, temperature sensors, valves and fittings exactly where you need them — the jacket also seals the tensioning gap while remaining tool-free to remove.
That depends on the surface temperature, component size and the plant's operating hours — the hotter the uninsulated surface and the longer the operating times, the greater the effect. Uninsulated heating zones release a considerable share of their output unused into the surrounding air; the jacket reduces exactly these losses. We are happy to provide a concrete estimate for your application based on your operating data.
The three-layer construction — a high-temperature-resistant E-glass fabric on the inside, a needle-bonded E-glass mat without binder as the insulation core, and a repellent, coated glass fabric on the outside — is designed for process temperatures up to 450 °C, as found on band heaters, pipelines and vessels. Tell us the surface temperature of your component — we will confirm suitability.
Very little: the jacket is wrapped around the component and closed with the generously overlapping hook-and-loop fastener — without tools, in just a few steps. For maintenance work, it can be removed just as quickly and reused afterwards.
Yes: it protects personnel from hot radiating surfaces, reduces heat release into the facility — which eases the load on air conditioning in summer — and additionally dampens noise. Especially in densely equipped production halls, contact protection and facility climate are often the real trigger for the purchase.
Our range
More products
Inquiry checklist
This is what we need for your quote:
- 01Component to be insulated (extruder barrel, pipeline, vessel, valve …)
- 02Dimensions: diameter or circumference and length of the section to be insulated
- 03Surface temperature of the component during operation
- 04Position and size of required cutouts (connections, sensors, fittings)
- 05Ambient conditions (oils, plastic vapors, mechanical stress)
- 06Quantity
- 07Photos, sketch or drawing of the component (very helpful for a proper fit)
Request a Product
Free and non-binding — sent directly to our technical sales team.