Complete system supplier KOCH presents a flexible system for mixing, dosing, conveying and drying plastic granulates
Koch-Technik will exhibit a comprehensive range of products at Fakuma 2009. The Ispringen, Germany-based manufacturer of peripheral systems has announced exhibits including fully automatic material management systems, energy-saving dry air dryers, process visualisation with barcode data capture for material verification, direct dyeing equipment for high throughput and gravimetric dosing systems.
Koch-Technik will also showcase its patented Navigator type material management system, which ensures no residues remain in the material distribution system. The fully automatic and program-controlled system links selected machine lines with the appropriate material line before the conveyor feeds the relevant machine. The feed lines are placed one on top of the other and then locked together to contain the flow of granulate more securely. Navigator makes it possible to link a maximum of 40 different materials with up to 40 processing machines. Suction valves clean the lines completely after each conveying cycle. Navigator can also be integrated into existing conveying systems; there is no need to change their basic design. (Figure 1)
Further KOCH exhibits at the Friedrichshafen exhibition will include the EKO series of dry air dryers, together with ÖKO control system. They offer particularly gentle drying and are also suitable for sensitive plastics, such as PA, PC, LCP or POM. By re-circulating the heat, up to 30% of energy costs can be saved depending on the temperature of the material to be dried. In combination with the ECO control system, this figure can even rise to 40%. This ECO control system protects thermally sensitive materials reliably from overly long drying times. To do this, the temperature in the reserve containers is constantly monitored. If the temperature rises because no or only little material is removed, flaps are closed, the heating is switched off and the container is set to off. If material is again removed, or as the granulate cools down through radiation, the container automatically switches itself on again. Additionally, the dew point-controlled regeneration of the drying bed ensures that energy consumption is reduced. Regeneration is not time-dependent, but based on demand subject to the moisture content of the granulate and on the required material quantity. This makes considerable energy savings possible for users. (Figure 2)
Koch-Technik will complement its portfolio of dryers at Fakuma with the KKT series of mobile dry air dryers. These compact devices are particularly suitable for drying and conveying where space is at a premium. The mobile dry air dryers can be used as standard for all applications of practical relevance and even for very hygroscopic plastic granulate. The switch control system allows the drying process to be adjusted to the throughput rate and the initial moisture level of the granulate, making energy savings of up to 40% possible, according to the manufacturer. (Figure 3)
Koch now offers an expanded range of KEM series direct dyeing equipment. They can be used on injection moulding machines or extruders and ensure that the shade of the end product remains consistent. Specifically for high throughputs, versions of type KEM-Ma are now also available. Unlike the standard version, the new variant features an agitator in the storage container. According to the manufacturer's specifications, this allows even sharp-edged ground material with poor flow properties to be fed evenly without bridging in the storage container. During impulse-dependent dosing (injection moulding), the dying process is carried out fully automatically with volumetric chamber dosing for the entire time granulate is supplied to the screw, where the main component is added via a free feed device. Therefore, when the product is changed, there is no mixed material in the machine. Modified dosing values are visible immediately on the product. The convenient slide below the mixer allows dye or material changes to be carried out with just a few hand movements, quickly and cleanly and without tools. Standard KEM-Ma units are available for dosing quantities between 7 and 200 kg/h, and dosing rollers for shot weights of 2 to 10,000 grams. (Figure 4)
Another Koch exhibit is the patented GRAVIKO with special vibration absorber. The gravimetric device doses miniscule quantities precisely and reliably with the highest reproducibility. The individual components are dosed into a container with a scale using a slider, or alternatively using a dosing roller (chamber volume dosing). There is also a dosing slider available for very small quantities. A scale then records the actual weight and transmits it to the KOCH control system, where the value is compared to the calculated set weight. With its closed chamber volume, the patented GRAVIKO system offers precision dosing with a tolerance of within +/-3 grains/1,000 grains. The GRAVIKO can also be used directly on injection moulding machines. In this case, accurate dosing is ensured by a special vibration absorber that compensates for vibration from the machine.
(Figure 5)
The Koch visualisation system provides automatic, complete and efficient documentation of all the relevant production data. As part of this system, material verification with barcode data capture is now also possible. To record the material flow and ensure that only registered material is processed, the material approval must be verified before the material change. This is done by scanning the material barcode and matching it to the in-house database system - such as SAP, Infor or Includis - in which the approved material batches are stored. An on-screen dialogue guides the operator through this process, which guarantees fast, error-free and complete operation. Only after the material type, manufacturer and batch number have been verified is the enable signal sent for feeding the plastic material. The material change is reported to the database and stored there. This allows documentation of which materials were processed when, even years later. By using high-quality individual components such as industrial scanners, Siemens PLC and InTouch visualisation, Koch has provided a tamper-proof system that corresponds to the stringent certification requirements of the plastics processing industry. (Figure 6)
Werner Koch Maschinentechnik GmbH was founded in 1974 and continues as a family-owned company to this day. The company is one of the few suppliers of complete systems on the market for plants and equipment for mixing, dosing, conveying and drying plastic granulates. With its modular unit system, Koch-Technik offers tailor-made solutions to meet customers’ extremely varied requirements – whether they are looking for single units or want to install complex central systems. Headquartered in Ispringen near Pforzheim, Germany, the company employs 150 staff worldwide and is represented by more than 40 international agencies across the globe. Koch-Technik owes its leading market position to constant innovation and the high quality of its individual products. For more than 35 years, the name Koch-Technik has been synonymous with innovation, precision, modular flexibility and cost-effectiveness in the mixing, dosing, conveying, drying and storing of plastic granulates and plastic powders. Use of our equipment and systems in more than 4,000 plastic processing companies around the world documents the acceptance and high efficiency of these systems in everyday production work.
Figure 1: The Navigator type material feed system is fully automatic and ensures no residues remain in the distribution system.
Figure 2: Dry air dryers from the EKO range with ÖKO control system and integrated touch panel ensure a particularly gentle and energy-saving plastic granulate drying process.
Figure 3: For tight spaces: Compact dry air dryers of the KKT series with switch control.
Figure 4: The KEM-Ma type direct dyeing machines for high throughputs ensure that the shade of the end product remains exactly consistent.
Figure 5: The GRAVIKO GK 150 for machine throughputs up to 150 kg/h, sufficient for four dosing stations.
Figure 6: Tamper-proof: As part of the Koch visualisation system, all materials are verified via barcode against the in-house database system.
Koch-Technik at Fakuma 2009
Fakuma 2009 Preview
Complete system supplier KOCH presents a flexible system for mixing, dosing, conveying and drying plastic granulates
Koch-Technik will exhibit a comprehensive range of products at Fakuma 2009. The Ispringen, Germany-based manufacturer of peripheral systems has announced exhibits including fully automatic material management systems, energy-saving dry air dryers, process visualisation with barcode data capture for material verification, direct dyeing equipment for high throughput and gravimetric dosing systems.
Koch-Technik will also showcase its patented Navigator type material management system, which ensures no residues remain in the material distribution system. The fully automatic and program-controlled system links selected machine lines with the appropriate material line before the conveyor feeds the relevant machine. The feed lines are placed one on top of the other and then locked together to contain the flow of granulate more securely. Navigator makes it possible to link a maximum of 40 different materials with up to 40 processing machines. Suction valves clean the lines completely after each conveying cycle. Navigator can also be integrated into existing conveying systems; there is no need to change their basic design. (Figure 1)
Further KOCH exhibits at the Friedrichshafen exhibition will include the EKO series of dry air dryers, together with ÖKO control system. They offer particularly gentle drying and are also suitable for sensitive plastics, such as PA, PC, LCP or POM. By re-circulating the heat, up to 30% of energy costs can be saved depending on the temperature of the material to be dried. In combination with the ECO control system, this figure can even rise to 40%. This ECO control system protects thermally sensitive materials reliably from overly long drying times. To do this, the temperature in the reserve containers is constantly monitored. If the temperature rises because no or only little material is removed, flaps are closed, the heating is switched off and the container is set to off. If material is again removed, or as the granulate cools down through radiation, the container automatically switches itself on again. Additionally, the dew point-controlled regeneration of the drying bed ensures that energy consumption is reduced. Regeneration is not time-dependent, but based on demand subject to the moisture content of the granulate and on the required material quantity. This makes considerable energy savings possible for users. (Figure 2)
Koch-Technik will complement its portfolio of dryers at Fakuma with the KKT series of mobile dry air dryers. These compact devices are particularly suitable for drying and conveying where space is at a premium. The mobile dry air dryers can be used as standard for all applications of practical relevance and even for very hygroscopic plastic granulate. The switch control system allows the drying process to be adjusted to the throughput rate and the initial moisture level of the granulate, making energy savings of up to 40% possible, according to the manufacturer. (Figure 3)
Koch now offers an expanded range of KEM series direct dyeing equipment. They can be used on injection moulding machines or extruders and ensure that the shade of the end product remains consistent. Specifically for high throughputs, versions of type KEM-Ma are now also available. Unlike the standard version, the new variant features an agitator in the storage container. According to the manufacturer's specifications, this allows even sharp-edged ground material with poor flow properties to be fed evenly without bridging in the storage container. During impulse-dependent dosing (injection moulding), the dying process is carried out fully automatically with volumetric chamber dosing for the entire time granulate is supplied to the screw, where the main component is added via a free feed device. Therefore, when the product is changed, there is no mixed material in the machine. Modified dosing values are visible immediately on the product. The convenient slide below the mixer allows dye or material changes to be carried out with just a few hand movements, quickly and cleanly and without tools. Standard KEM-Ma units are available for dosing quantities between 7 and 200 kg/h, and dosing rollers for shot weights of 2 to 10,000 grams. (Figure 4)
Another Koch exhibit is the patented GRAVIKO with special vibration absorber. The gravimetric device doses miniscule quantities precisely and reliably with the highest reproducibility. The individual components are dosed into a container with a scale using a slider, or alternatively using a dosing roller (chamber volume dosing). There is also a dosing slider available for very small quantities. A scale then records the actual weight and transmits it to the KOCH control system, where the value is compared to the calculated set weight. With its closed chamber volume, the patented GRAVIKO system offers precision dosing with a tolerance of within +/-3 grains/1,000 grains. The GRAVIKO can also be used directly on injection moulding machines. In this case, accurate dosing is ensured by a special vibration absorber that compensates for vibration from the machine.
(Figure 5)
The Koch visualisation system provides automatic, complete and efficient documentation of all the relevant production data. As part of this system, material verification with barcode data capture is now also possible. To record the material flow and ensure that only registered material is processed, the material approval must be verified before the material change. This is done by scanning the material barcode and matching it to the in-house database system - such as SAP, Infor or Includis - in which the approved material batches are stored. An on-screen dialogue guides the operator through this process, which guarantees fast, error-free and complete operation. Only after the material type, manufacturer and batch number have been verified is the enable signal sent for feeding the plastic material. The material change is reported to the database and stored there. This allows documentation of which materials were processed when, even years later. By using high-quality individual components such as industrial scanners, Siemens PLC and InTouch visualisation, Koch has provided a tamper-proof system that corresponds to the stringent certification requirements of the plastics processing industry. (Figure 6)
Werner Koch Maschinentechnik GmbH was founded in 1974 and continues as a family-owned company to this day. The company is one of the few suppliers of complete systems on the market for plants and equipment for mixing, dosing, conveying and drying plastic granulates. With its modular unit system, Koch-Technik offers tailor-made solutions to meet customers’ extremely varied requirements – whether they are looking for single units or want to install complex central systems. Headquartered in Ispringen near Pforzheim, Germany, the company employs 150 staff worldwide and is represented by more than 40 international agencies across the globe. Koch-Technik owes its leading market position to constant innovation and the high quality of its individual products. For more than 35 years, the name Koch-Technik has been synonymous with innovation, precision, modular flexibility and cost-effectiveness in the mixing, dosing, conveying, drying and storing of plastic granulates and plastic powders. Use of our equipment and systems in more than 4,000 plastic processing companies around the world documents the acceptance and high efficiency of these systems in everyday production work.
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Figure 1: The Navigator type material feed system is fully automatic and ensures no residues remain in the distribution system.
Figure 2: Dry air dryers from the EKO range with ÖKO control system and integrated touch panel ensure a particularly gentle and energy-saving plastic granulate drying process.
Figure 3: For tight spaces: Compact dry air dryers of the KKT series with switch control.
Figure 4: The KEM-Ma type direct dyeing machines for high throughputs ensure that the shade of the end product remains exactly consistent.
Figure 5: The GRAVIKO GK 150 for machine throughputs up to 150 kg/h, sufficient for four dosing stations.
Figure 6: Tamper-proof: As part of the Koch visualisation system, all materials are verified via barcode against the in-house database system.
Attachments
fig_1_navigator_detail_koch (PNG)
fig_2_eko_touch_koch (PNG)
fig_3_kkt_koch (PNG)
fig_4_kem_ma_az_z12_koch (PNG)
fig_5_graviko_koch (PNG)
fig_6_barcodescanner_hand_k (JPG)
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