AMUT’s Single Calender Extrusion Expertise for the Production of Waterproofing Membranes

The state-of-the-art Single Calender Extrusion Line allows AMUT to offer the production of diversified membranes, minimising costs associated with two or three-step processing, material change and machine purging.

Since its establishment in 1958, AMUT has developed a strict cooperation with clients, focusing on their needs and developing custom-engineered solutions, to respond adequately to each specific project requirement. A customer-centric philosophy that has been applied to all its business units with no exception.

In the extrusion domain dedicated to thermoplastic PVC and TPO, single or multilayer waterproofing membranes, this proactive approach coupled with AMUT’s advanced technical know-how has allowed the company to design different tailor-made turn-key plants with either Double or Single Calender. Such diversified systems may reach an overall production of up to 15 million sq. m. and 8 million sq. m. of high-quality membrane per year, respectively.

The Single Calender system is the result of the technological innovation conducted in over 40 years of experience, which led AMUT to be the only provider in the world.

This configuration allows AMUT to produce in one single step a co-extruded 3-layer membrane, adding the inner reinforcement (polyester, polypropylene, fiberglass) and the fleeceback scrim bonding for support. The end product is a finished membrane composed of up to five materials/layers coupled in a single step, offering to end-users a completely different proposal from those currently available on the market.

The Single Calender achievement was obtained thanks to constant studies and research in the extrusion process applied to sheets and rolls in thermoplastic material. Its state-of-the-art Single Calender Line combined with a reliable extrusion and laminating technology, allows AMUT to offer the production of diversified membranes, minimising the costs associated with two or three-step processing, material change and machine purging.

AMUT’s high-efficiency extrusion lines are fully automatic to optimise the production cycle. In particular, a well-proven control software, designed and developed in-house, thanks to the long-term experience and coordination between its technological department and electronic specialists gives several supports to customer’s operators. A typical example is the automatic ramp procedure where the line is started at low speed to reduce the waste production during the machine setup and then, by a simple input of ramp parameters, the line is automatically sped up at the targeted production.

The whole management of all operation and control parameters makes the line ready for Industry 4.0 with relevant benefits in terms of quality control and global integration with its customers’ production database.

Moreover, the lines are equipped with an automatic packing system for the rolls produced and features technology for dimensional control of the product and visual surface inspection, with detection of any aesthetic effects.

An automatic process for direct in-line dosing of raw materials and flame retardant additives that will be directly processed and extruded by the AMUT line is also included in the plant.


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