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Plant technology for the continuous production of polyurethane sandwich panels with a core structure made of polyurethane or mineral wool



Rigid polyurethane foam has the lowest thermal conductivity of all insulating materials and is therefore used in the form of metal composite elements in industrial and cold store construction, as well as in cooling chambers for supermarkets and in thermal assemblies for trucks. With its highly developed, continuously or discontinuously operating sandwich panel lines, Hennecke-OMS has played a decisive role in this success story right from the start. The PANELMASTER STEEL plant is designed for the continuous production of top-quality sandwich panels with different facings, panel thicknesses and profiles and the option of a core structure made of polyurethane or mineral wool. Thanks to the company HPT GmbH, the Hennecke GROUP also has a highly-specialized provider of high-performance trapezoidal sheet roll forming systems, which can be seamlessly incorporated into the existing plant concept for the PANELMASTER STEEL continuous sandwich panel lines. In the continuous production of sandwich elements with metal facing, Hennecke-OMS is one of only a few suppliers that can offer its customers convincing all-round solutions from a single source.


The entry section contains the equipment for handling the coil and processing the metal facings. This includes unwinding and feeding the steel coils into the plant, preparing the strips by trimming and connecting them, as well as the profiling of the lower and upper metal facings. The surface and edge profiling gives the sandwich composite elements a defined shape and joins them securely together.

The profiling section usually comprises the following parts:

Mixing and metering

Hennecke-OMS offers the entire equipment for the metering, storage, transport, and monitoring of raw materials and additives The polyurethane metering machines are responsible for the homogenous mixing of the reactive components polyol and isocyanate, as well as various additives (e.g. catalysts, blowing agents, curing agents, flame retardants). Hennecke-OMS sandwich panel production lines are based on a well-planned arrangement of the individual units and top-quality components. This guarantees the user a uniform cell structure and an efficient raw material yield.

The raw material dispensing equipment, or wet part, usually comprises the following:

The center section

The center section for continuous metal facings is the heart of a PANELMASTER STEEL production line. It represents our company's accumulated expertise in polyurethane processing under high pressure.

The center section of the PANELMASTER STEEL usually comprises the following:

Cooling and stacking

This so-called cooling zone provides for the interim storage and cooling of the panels. Here the panels are finished and stacked, interlayers are inserted and the stacks are wrapped with a protective film.

The cooling and stacking of the PANELMASTER STEEL usually comprises the following parts:

Plant control system

State-of-the-art, computer-aided electronic systems ensure maximum operating safety, require minimal space and allow product changes to be implemented quickly and virtually automatically.

The plant control system usually comprises the following parts:

Product video
Plant technology for the continuous production of polyurethane sandwich panels
Sandwich panel lines
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