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(c) Fraunhofer ICT
06.01.2023

Fraunhofer CPM develop programmable material for ergonomic lying position

Many people across the world are bedridden – be it due to illness, an accident or old age. Because those affected often cannot move or turn over by themselves, they often end up with very painful bedsores. In the future, it should be possible to avoid bedsores with the help of materials that can be programmed to entirely adapt their form and mechanical properties. For example, the body support of mattresses made from programmable materials can be adjusted in any given area at the push of a button. Furthermore, the support layer is formed in such a way that strong pressure on one point can be distributed across a wider area. Areas of the bed where pressure is placed are automatically made softer and more elastic. Caregivers can also adjust the ergonomic lying position to best fit their patient.

Many people across the world are bedridden – be it due to illness, an accident or old age. Because those affected often cannot move or turn over by themselves, they often end up with very painful bedsores. In the future, it should be possible to avoid bedsores with the help of materials that can be programmed to entirely adapt their form and mechanical properties. For example, the body support of mattresses made from programmable materials can be adjusted in any given area at the push of a button. Furthermore, the support layer is formed in such a way that strong pressure on one point can be distributed across a wider area. Areas of the bed where pressure is placed are automatically made softer and more elastic. Caregivers can also adjust the ergonomic lying position to best fit their patient.

Materials and microstructuring
Materials for applications requiring specific changes to stiffness or shape are being developed by researchers from Fraunhofer CPM, which is formed of six core institutes with the aim of designing and producing programmable materials. So, how can we program materials? “Essentially, there are two key areas where adjustments can be made: the base material – thermoplastic polymers in the case of mattresses and metallic alloys for other applications, including shape memory alloys – and, more specifically, the microstructure,” explains Dr. Heiko Andrä, spokesperson on the topic at the Fraunhofer Institute for Industrial Mathematics ITWM, one of the Fraunhofer CPM core institutes. “The microstructure of these metamaterials is made up of unit cells that consist of structural elements such as small beams and thin shells.” While the size of each unit cell and its structural elements in conventional cellular materials, like foams, vary randomly, the cells in the programmable materials are also variable – but can be precisely defined, i.e., programmed. This programming can be made, for example, in such a way that pressure on a particular position will result in specific changes at other regions of the mattress, i.e., increase the size of the contact surface and provide optimal support to certain areas of the body.

Materials can also react to temperature or humidity
The change in shape that the material should exhibit and the stimuli to which it reacts - mechanical stress, heat, moisture or even an electric or magnetic field - can be determined by the choice of material and its microstructure.

The journey to application
A single piece of material can take the place of entire systems of sensors, regulators and actuators. The goal of Fraunhofer CPM is to reduce the complexity of systems by integrating their functionalities into the material and reducing material diversity. We always have industrial products in mind when developing the programmable materials. As such, we take mass production processes and material fatigue into account, among other things,” says Franziska Wenz, deputy spokesperson on the topic at the Fraunhofer Institute for Mechanics of Materials IWM, another core institute of Fraunhofer CPM. The initial pilot projects with industry partners are also already underway. The research team expects that initially, programmable materials will act as replacements for components in existing systems or be used in special applications such as medical mattresses, comfortable chairs, variable damping shoe soles and protective clothing. “Gradually, the proportion of programmable materials used will increase,” says Andrä. Ultimately, they can be used everywhere – from medicine and sporting goods to soft robotics and even space research.

Source:

Fraunhofer ITWM

Photo: Andritz/Recypur
02.09.2022

New mattresses made of industrial & post-consumer foam waste

  • Recypur successfully starts up a complete airlay line delivered by ANDRITZ for its mill in L’Alcúdia, Spain

The airlay line is designed for recycling of post-industrial and post-consumer foam and was developed specifically for the bedding and furniture industry, with material heights reaching 20 cm and densities of up to 120 kg/m3. Experimental tests carried out together with experts from ANDRITZ Laroche led to the conclusion that the mechanical method for recycling polyurethane is the most versatile and reliable.

With a capacity of 1.2 t/h, this airlay line enables Recypur to supply new mattresses made of industrial & post-consumer foam waste from old mattresses. This well proven process allows to reduce the environmental impact, increase self-sufficiency and eventually reduce the use of polyurethane. Such a set-up also allows multiple functional materials to be incorporated into the blend, such as flame-retardant, conductive and insulating fibers, among others. Thanks to this tailored approach, Recypur is now able to expand its diversification, innovation and reputation on the Spanish market.

  • Recypur successfully starts up a complete airlay line delivered by ANDRITZ for its mill in L’Alcúdia, Spain

The airlay line is designed for recycling of post-industrial and post-consumer foam and was developed specifically for the bedding and furniture industry, with material heights reaching 20 cm and densities of up to 120 kg/m3. Experimental tests carried out together with experts from ANDRITZ Laroche led to the conclusion that the mechanical method for recycling polyurethane is the most versatile and reliable.

With a capacity of 1.2 t/h, this airlay line enables Recypur to supply new mattresses made of industrial & post-consumer foam waste from old mattresses. This well proven process allows to reduce the environmental impact, increase self-sufficiency and eventually reduce the use of polyurethane. Such a set-up also allows multiple functional materials to be incorporated into the blend, such as flame-retardant, conductive and insulating fibers, among others. Thanks to this tailored approach, Recypur is now able to expand its diversification, innovation and reputation on the Spanish market.

The scope of supply includes a blending line with five feeders, an Exel 1500 for fine opening, an Airlay Flexiloft+ with 2.20 m working width, a recycling machine and an oven.

Airlay lines strongly support the circular economy and are part of ANDRITZ’s comprehensive product portfolio of sustainable solutions that help customers achieve their own sustainability goals in terms of climate and environmental protection.

Recypur, based in the Spanish province of Valencia, is part of DELAX, a Spanish group specialized in manufacturing and commercialization of innovative beds and mattresses. This company is the first Spanish manufacturer of recycled flexible polyurethane foam cores from post-consumer foam waste.

Source:

Andritz AG

(c) HeiQ
13.01.2022

HeiQ Launches World’s First Dual Action Textile Cooling Technology

HeiQ announces the launch of HeiQ Cool, the world’s first textile technology to deliver both instant contact cooling and continuous evaporative cooling.

Addressing the importance of body temperature control, whereby both overheating and feeling chilly are problematic, HeiQ Cool powered fabrics constantly regulate the skin temperature with a dual cooling capability. In a first step, melting energy absorption delivers instant contact cooling before the first sign of sweat and delays the build-up of heat, followed by a vaporizing energy action that mimics the skin’s thermal regulating system by providing continuous evaporative cooling as long as the body is hot and sweaty. Suitable for all fabrics, the initial launch focuses on home textiles, especially sleeping products such as mattress ticking, pillows and bed linen because of its clear benefit to help users get a good night’s sleep. It cools before the first sign of sweat, delays the build-up of heat and continuously regulates the temperature. Instantly cool to the touch, the components synergistically recharge the surface layer ensuring a consistently cool, dry and comfortable body climate.

HeiQ announces the launch of HeiQ Cool, the world’s first textile technology to deliver both instant contact cooling and continuous evaporative cooling.

Addressing the importance of body temperature control, whereby both overheating and feeling chilly are problematic, HeiQ Cool powered fabrics constantly regulate the skin temperature with a dual cooling capability. In a first step, melting energy absorption delivers instant contact cooling before the first sign of sweat and delays the build-up of heat, followed by a vaporizing energy action that mimics the skin’s thermal regulating system by providing continuous evaporative cooling as long as the body is hot and sweaty. Suitable for all fabrics, the initial launch focuses on home textiles, especially sleeping products such as mattress ticking, pillows and bed linen because of its clear benefit to help users get a good night’s sleep. It cools before the first sign of sweat, delays the build-up of heat and continuously regulates the temperature. Instantly cool to the touch, the components synergistically recharge the surface layer ensuring a consistently cool, dry and comfortable body climate.

USDA certified biobased dual action cooling textile technology
The biobased vegetable oil-derived thermo-functional polymer absorbs heat energy, giving an instant cooling sensation. If the body continues to heat up, perspiration is generated and the patented hydro-functional polymer transports moisture away together with the heat, creating a continuous cooling effect that stops once cooling is complete. The combination of a hydro-functional polymer with biobased vegetable oil-derived thermo-functional polymer formulation of HeiQ Cool contains more than 50% USDA® certified biobased content. It is also OEKO-TEX class 1 suited and meets most brand RSL (restricted substances list) requirements.

Source:

HeiQ