Efficient plant engineering combined with comprehensive material treatment and material handling expertise
Bensheim, February 2014 – At this year's Chinaplas from 23 - 26 April in Shanghai/China, ProTec Polymer Processing will be presenting efficient plant engineering solutions for material treatment and solution concepts for flexible and economic material handling. Highlights at the company's stand will include the new, optimized solid-state reactor (OHL tumble reactor) for selectively improving the properties of free-flowing materials, LFT technology for producing long-fiber reinforced thermoplastics and systems for drying, conveying and dosing granulates and mill base. The SOMOS® TF 40 eco auxiliary dryer on show at the trade fair displays the impressive flexibility and energy efficiency of the SOMOS® dry air dryers.
OHL tumble reactor with improved energy efficiency
The OHL tumble reactor is a solid-state polycondensation (SSP) reactor that can be heated and evacuated. It is available in coordinated modular sizes, from 50-liter sizes for laboratory use all the way to large 44 m3 containers for manufacturing plants. Designed for improving the properties of free-flowing materials, the reactor on display at Chinaplas will feature optimized geometry as well as revised drive and control technology. Heated using heat transfer oil, it uses a significantly smaller volume of oil to achieve the necessary heat transfer to control the process than its predecessor, which also lowers energy consumption. Together with the overall optimization of the reactor container's weight and drive system, energy consumption for this process step is reduced by around 20 %. The OHL tumble reactor is used, for example, to purge polyester and polyamides of volatile pollutants (de- contaminating) and/or to post-condense these materials, i. e. increase their molecular weight. In addition, the reactor is used in the chemical and pharmaceutical industries for systematically and gently improving the properties of free-flowing solids.
The tumbling rotation of the reactor, due to its inclined position relative to the horizontal rotational axis, results in permanent, homogeneous mixing while placing a low mechanical strain on the packaged goods. Precise control over the parameters of temperature, vacuum and time ensures that granulates – recyclates or new product – are individually processed to the required quality, depending on the technical specifications and requirements for their intended use. The reactor operates in batch mode to guarantee exactly the same retention time for the entire contents. This also results in reproducible, consistent product characteristics.
(double click on picture to open in new window)
The optimized OHL tumble reactors, used here during PET recycling to decontaminate
and to perform controlled post-condensation of rPET pellets, consume as much as 20 % less energy.
Long-fiber reinforced thermoplastics – the economic alternative to thermosetting plastics
The plant technology for manufacturing long-fiber reinforced thermoplastics (LFT) presented by ProTec Polymer Processing at Chinaplas is suitable for manufacturing a broad range of materials using a diverse polymer matrix and different types of fiber reinforcement. These composite materials are created with fibers of granulate length – lengths of 7 mm to 25 mm are the industry norm – using what is called the pultrusion process. This is achieved using technology jointly developed by ProTec Polymer Processing and project partner PolymersNet, which isolates the fiber strands in the impregnation tool to create filaments. The individual fibers are then coated with the polymer melt. The LFT created in this way produces components with excellent surface quality and high mechanical strength. The technology can be used to realize fiber content of up to 60 percent by weight and plant sizes with throughputs of up to 1.2 t/h.
LFT is opening up fields of application that were previously the preserve of thermosetting plastics. In addition to high strength, stability and impact strength, components made using it exhibit excellent heat resistance. Since LFT can be processed using injection-molding techniques, it can be used to make components much more cost-effectively than conventional thermosetting plastics (GRP) reinforced with long glass fibers. This is because the manual laminating process for GRP is extremely labor-intensive and therefore expensive.
(double click on picture to open in new window)
Dry air dryers from the SOMOS® T/TF eco range (the model shown is the TF 40 eco
with a mounting flange for a FG 200 series conveyor) are compact, well equipped, and extremely versatile –
especially when frequent material changes are required or small to medium material throughputs
are processed without a central drying system.
Photos: ProTec Polymer Processing
Material drying using auxiliary dryers – energy-efficient and highly flexible
With a mobile dyer from the SOMOS® T/TF eco range, ProTec Polymer Processing demonstrates its plant technology and expertise in the area of economical, energy-efficient, and flexible material handling. These mobile dryers consist of a drying air generator and an insulated stainless steel drying hopper. They are available as a TF version with an integrated conveyor mechanism for automatically feeding the processing machine, or as a T version without this feature. The hopper geometry is optimized to the material flow, resulting in a uniformly low variation in retention time for the material to be dried, which in turn ensures consistent characteristics in the dried material. With hoppers sizes ranging from 30 l to 300 l, graded in five dimensions with adjusted dry air throughputs of 10 m3/h to 100 m3/h, the quantity of material adjusted to the throughput of the processing machine can be flexibly prepared close to the machine. To ensure frugal energy consumption, the dryers are equipped with energy-saving technology for which SOMOS® dryers are renowned.
The range of dryers caters to small material throughputs of approximately 3 kg/h all the way to 80 to 100 kg/h. The possible drying temperatures range from 60 to 140 °C at a dew-point temperature of the dry air of -35 °C. A user-friendly microprocessor controller monitors, regulates, and documents all functions of the dryer.
ProTec Polymer Processing GmbH with headquarters in Bensheim bundles the renowned brands SOMOS® and OHL. Machines and entire system solutions for the efficient material handling for all plastic treatment processes offered today as well as machines for the solid matter post-condensation of plastics and turn-key plants for bottle-to-bottle recycling of PET ProTec Polymer Processing is a member of the Schoeller Plast Industries Group of companies with manufacturing locations in Germany, Denmark and Brazil. The inclusion in the global sales and service network of the Schoeller Group offers the optimal infrastructure for a comprehensive on-site customer service.
ProTec Polymer Processing @ Chinaplas
ProTec Polymer Processing at Chinaplas 2014
(Hall E1, Stand E43)
Efficient plant engineering combined with comprehensive material treatment and material handling expertise
Bensheim, February 2014 – At this year's Chinaplas from 23 - 26 April in Shanghai/China, ProTec Polymer Processing will be presenting efficient plant engineering solutions for material treatment and solution concepts for flexible and economic material handling. Highlights at the company's stand will include the new, optimized solid-state reactor (OHL tumble reactor) for selectively improving the properties of free-flowing materials, LFT technology for producing long-fiber reinforced thermoplastics and systems for drying, conveying and dosing granulates and mill base. The SOMOS® TF 40 eco auxiliary dryer on show at the trade fair displays the impressive flexibility and energy efficiency of the SOMOS® dry air dryers.
OHL tumble reactor with improved energy efficiency
The OHL tumble reactor is a solid-state polycondensation (SSP) reactor that can be heated and evacuated. It is available in coordinated modular sizes, from 50-liter sizes for laboratory use all the way to large 44 m3 containers for manufacturing plants. Designed for improving the properties of free-flowing materials, the reactor on display at Chinaplas will feature optimized geometry as well as revised drive and control technology. Heated using heat transfer oil, it uses a significantly smaller volume of oil to achieve the necessary heat transfer to control the process than its predecessor, which also lowers energy consumption. Together with the overall optimization of the reactor container's weight and drive system, energy consumption for this process step is reduced by around 20 %. The OHL tumble reactor is used, for example, to purge polyester and polyamides of volatile pollutants (de- contaminating) and/or to post-condense these materials, i. e. increase their molecular weight. In addition, the reactor is used in the chemical and pharmaceutical industries for systematically and gently improving the properties of free-flowing solids.
The tumbling rotation of the reactor, due to its inclined position relative to the horizontal rotational axis, results in permanent, homogeneous mixing while placing a low mechanical strain on the packaged goods. Precise control over the parameters of temperature, vacuum and time ensures that granulates – recyclates or new product – are individually processed to the required quality, depending on the technical specifications and requirements for their intended use. The reactor operates in batch mode to guarantee exactly the same retention time for the entire contents. This also results in reproducible, consistent product characteristics.
(double click on picture to open in new window)
The optimized OHL tumble reactors, used here during PET recycling to decontaminate
and to perform controlled post-condensation of rPET pellets, consume as much as 20 % less energy.
Long-fiber reinforced thermoplastics – the economic alternative to thermosetting plastics
The plant technology for manufacturing long-fiber reinforced thermoplastics (LFT) presented by ProTec Polymer Processing at Chinaplas is suitable for manufacturing a broad range of materials using a diverse polymer matrix and different types of fiber reinforcement. These composite materials are created with fibers of granulate length – lengths of 7 mm to 25 mm are the industry norm – using what is called the pultrusion process. This is achieved using technology jointly developed by ProTec Polymer Processing and project partner PolymersNet, which isolates the fiber strands in the impregnation tool to create filaments. The individual fibers are then coated with the polymer melt. The LFT created in this way produces components with excellent surface quality and high mechanical strength. The technology can be used to realize fiber content of up to 60 percent by weight and plant sizes with throughputs of up to 1.2 t/h.
LFT is opening up fields of application that were previously the preserve of thermosetting plastics. In addition to high strength, stability and impact strength, components made using it exhibit excellent heat resistance. Since LFT can be processed using injection-molding techniques, it can be used to make components much more cost-effectively than conventional thermosetting plastics (GRP) reinforced with long glass fibers. This is because the manual laminating process for GRP is extremely labor-intensive and therefore expensive.
(double click on picture to open in new window)
Dry air dryers from the SOMOS® T/TF eco range (the model shown is the TF 40 eco
with a mounting flange for a FG 200 series conveyor) are compact, well equipped, and extremely versatile –
especially when frequent material changes are required or small to medium material throughputs
are processed without a central drying system.
Photos: ProTec Polymer Processing
Material drying using auxiliary dryers – energy-efficient and highly flexible
With a mobile dyer from the SOMOS® T/TF eco range, ProTec Polymer Processing demonstrates its plant technology and expertise in the area of economical, energy-efficient, and flexible material handling. These mobile dryers consist of a drying air generator and an insulated stainless steel drying hopper. They are available as a TF version with an integrated conveyor mechanism for automatically feeding the processing machine, or as a T version without this feature. The hopper geometry is optimized to the material flow, resulting in a uniformly low variation in retention time for the material to be dried, which in turn ensures consistent characteristics in the dried material. With hoppers sizes ranging from 30 l to 300 l, graded in five dimensions with adjusted dry air throughputs of 10 m3/h to 100 m3/h, the quantity of material adjusted to the throughput of the processing machine can be flexibly prepared close to the machine. To ensure frugal energy consumption, the dryers are equipped with energy-saving technology for which SOMOS® dryers are renowned.
The range of dryers caters to small material throughputs of approximately 3 kg/h all the way to 80 to 100 kg/h. The possible drying temperatures range from 60 to 140 °C at a dew-point temperature of the dry air of -35 °C. A user-friendly microprocessor controller monitors, regulates, and documents all functions of the dryer.
ProTec Polymer Processing GmbH with headquarters in Bensheim bundles the renowned brands SOMOS® and OHL. Machines and entire system solutions for the efficient material handling for all plastic treatment processes offered today as well as machines for the solid matter post-condensation of plastics and turn-key plants for bottle-to-bottle recycling of PET ProTec Polymer Processing is a member of the Schoeller Plast Industries Group of companies with manufacturing locations in Germany, Denmark and Brazil. The inclusion in the global sales and service network of the Schoeller Group offers the optimal infrastructure for a comprehensive on-site customer service.
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