EXTRUDER FEEDING SYSTEMS

Transcription

1 EXTRUDER FEEDING SYSTEMS

2 KREYENBORG GROUP BEST TECHNOLOGY INSIDE! The KREYENBORG GROUP is comprised of the following companies: KREYENBORG GmbH, BKG Bruckmann & Kreyenborg Granuliertechnik GmbH, Bruckmann Steuerungstechnik GmbH (BSG) and KREYENBORG PLANT TECHNOLOGY GmbH & Co. KG (KPT). As family owned and operated companies, the members of the KREYENBORG GROUP have been recognized for more than 50 years as a byword symbolizing quality components and machines for the extrusion and polymerization industries. Customers around the world know and trust the equipment and systems of the KREYENBORG GROUP. This has allowed us to become a global partner for the plastics industry. We have realized that providing a complete system with each of the various components designed to be compatible as a unit, offers the optimal solution and ensures an efficient utilization of the equipment. All of our systems are manufactured in-house; combining automation technology together with screen changers, melt pumps, pelletizers and bulk material handling equipment. All of the components are from a single source. Therefore, problems with interfacing between the various components are completely eliminated. The family run KREYENBORG GROUP has over 300 employees worldwide, all of whom share a common corporate philosophy to support our customers in achieving their goals through continuous improvements and constant self-monitoring. Quick decision-making, a focus on long-term business strategy and the close relationship between the owners and their companies and employees play a crucial role. Customer satisfaction is at the centre of our daily routine. Our engineering can provide the smooth integration of all components into existing systems while maintaining a minimum of process interfaces and ensuring the synergy of the overall project. Due to significant vertical integration, a high proportion of the components for our machines are manufactured in-house. Components may also be custom designed to suit the requirements of individual customers. The member companies of the KREYENBORG GROUP support our customers individually and flexibly. As a special service we offer customers the opportunity to perform trials of their materials in our own, modern, test laboratory. Here it is possible for the customer to view their own material being processed under real production conditions using the different equipment items produced by the KREYENBORG GROUP. We are focused on the production location remaining in Germany. Because of this we are able to offer the advantages of Made in Germany to our customers. For our customers this means: Reliable and precise manufacturing Complete, in-house, quality control A high level of innovation demonstrated by many patents Quality certified, Made in Germany Because of our own sales and service branches in China and the USA; together with our industrial representatives world-wide; the KREYENBORG GROUP is able to assure a high level of customer service. filtration systems pump technology polymer valves underwater pelletizing centrifugal dryers automation technology infrared technology mixers special silos extruder feeding systems 2

3 CONTENTS KREYENBORG EXTRUDER FEEDING SYSTEMS DENSIFIER TYP KSW 4 5 In all cases, where not optimally free flowing products, like granulate, have to be fed into an extruder, it is necessary or may be useful to work with special extruder feeding systems. SPECIAL FEED HOPPER 6 7 These serve as material storage and ensure an automatic feeding of the extruder. So these auxiliary units guarantee the complete utilization of the extruder s capacity even with difficult processing material. QUOTATION FORM 8 Already for more than 50 years the Kreyenborg GmbH from Germany supplies mixers, special silos and extruder feeding systems to customers all over the world. Certified first class quality according to DIN EN ISO

4 DENSIFIER TYP KSW The Densifier, type KSW is used for the feeding of single-screw and twin-screw extruders with not optimally free flowing products as ground stock, agglomerates, film flakes and fibres. By the predensifying of the material and the feeding into the extruder screw with a constant pressure the feeding of the extruder with the largest possible quantity of material and an optimization of its commercial sufficiency is ensured. FIELDS OF APPLICATION For the feeding of the extruder with bottle ground stock, punching ribbon thick film flakes powders thin film flakes or fibres FUNCTION The material, which has to be processed, is fed into the feed hopper of the densifier by means of a conveying device (for example conveying screw or pneumatic conveying system). The hopper serves as a small buffer. The filling level is controlled by a level indicator, which is adapted to the product. If necessary, the material is loosened up in the bin by means of special agitators and scrappers. If requested, the material is then densified by means of the densifying screw, according to material s specifications and fed by force into the below placed extruder screw. The densifying auger is always specially executed according to the product regarding its density and its flowing and compression behaviour. OPTIONS Densifier for PVC powder with lifting device LIFTING DEVICE Optionally the densifiers may be equipped with a hydraulically operated lifting device with manually operated pump. This device ensures the quick and easy lifting and slewing of the aggregates from the extruder for cleaning and maintenance purposes. COATING With sticking products or in case of materials with bad slip values the upper part of the bin as well as the complete densifying auger may be coated. We choose and offer different kinds of coatings with excellent anti-friction properties and abrasion resistance. 4

5 Type Installed Throughput Throughput [kw] Film flakes [kg/h] Powder [kg/h] KSW 80 7, KSW 100 7, KSW , KSW 150 9,2 15, KSW ,0 18, KSW ,0 22, KSW ,0 30, KSW ,0 37, The throughput capacity depends on the extruder, its inlet opening and zone as well as on the special material properties. The a.m. throughput capacities are examples for film flakes and powders for a certain case of application and a possible density. Universal Densifier for effective and continuous feeding of the extruder 5

6 SPECIAL FEED HOPPER For the direct refeeding of edge trims or also production waste into the production extruder a special feed hopper is required. FIELDS OF APPLICATION No additional thermic stress of the material is caused by the direct refeeding without an intermediate granulation. FUNCTION The Special Feed Hopper essentially consists of a double-walled material hopper, a special conveying screw as well as one feed pipe each for the film flakes and the pellets (virgin material). At the end of the film line, the edge trims are exhausted, ground and pneumatically fed into the inner bin of the hopper. An adjustable feeding screw ensures a constant feeding to the extruder. The granulate is also conveyed to the extruder out of the outer bin of the feed hopper. The relation of the speed of the feeding screw and extruder screw determines the portion of the refed film flakes and is adjusted during the start-up. THROUGHPUT CAPACITY/ TECHNICAL DATA The Special Feed Hopper is used for the feeding of the extruder with two different components. In most cases it is dealt with recycling material (film flakes, ground stock) and free flowing granulate (virgin material). This aggregate is mainly used within film lines for the direct refeeding of edge trims. But also special solutions, for example for the installation on a die-casting machine for the adding in of recycled material, may be realized. OPTIONS Edge trim exhaustion, cutting mill, flake conveyance: On customer s request our engineers may project and supply the additional machine technics concerning the Special Feeding Hopper within a film line. Edge trim exhaustion, the necessary cutting mill and the film conveyance with cyclone separator and filter will be integrated. Scheme: Special Feed Hopper The throughput capacity depends on the extruder and the size of the line. The KREYENBORG Feed Hoppers are executed for total capacities of 100 kg/h to kg/h. The film portion, depending on the geometry of the extruder inlet zone, is at weight % of this total throughput. With favourable conditions it can also be partly increased up to 30 weight %. mix 6

7 NOTES Special Feed Hopper 7

8 QUOTATION FORM FOR EXTRUDER FEEDING SYSTEMS FAX +49 (0) / CONTACT Company name Contact person Dept. Address Phone Fax MATERIAL DATA Type of plastic (trade name, code design) kind Film flakes Fibres Ground stock Pellets Powder others Characteristics Bulk density kg/dm 3 Thickness mm Length of edge mm Residual moisture % Others EXTRUDER Type Conn. Meas. Ø mm / mm Others THROUGHPUT Throughput performance kg/h Product dosing Product densifying Others MATERIAL Material Normal steel In touch with product or similar Others ADDITIONAL EQUIPMENT Equipment Lifting device, turnable (at KSW)) Others OTHERS WE REQUIRE

9 KREYENBORG PLANT TECHNOLOGY GmbH & Co. KG Messingweg Senden Germany Phone: +49 [0] 25 97/ Fax: +49 [0] 25 97/

10 KREYENBORG PLANT TECHNOLOGY GmbH & Co. KG Messingweg Senden Germany Phone: +49 [0] 25 97/ Fax: +49 [0] 25 97/ Representative: Screen Changers Melt Pumps Underwater Pelletizing Systems Special Silos Infrared Technology Mixing Technology Automation Systems