Used Compounding for sale (183)

Condition: good (used), Voss Böwe Passat type 38 E 104 boiling kettle Description: - Stainless steel body - Stable welded - Rounded corners/edges Technical data: Type 80 E 104 Type of current 3N Voltage 380 volt Control voltage 220 volts Rated current 20,4 A frequency 50 Hz Power 12,45 kW Weight 85 kg Dimensions boiler ca. ø 39cm height 40cm Dimensions body ca. 51, x 89,5 x 69,5cm (WxDxL) Calculated volume 40 liters Rjdpfjlik Hnsx Aazen Scope of delivery: 1 x Voss Böwe Passat type 38 E 104 cooking kettle (partw. without side plate because you stood in the compound) Article condition: used, to the controls contactors & switches have to be repositioned Circuit diagram available. More items - new and used - you will find in our store! International shipping costs on request!

Condition: refurbished (used), MORI-SAY 6/32 check over in standart configuration complete with : - 4 compound slides at stations 1-2-4-5 with independent movement - SIEMENS model S5 Simodrive motors for conditions feed speed ranges Chips conveyor : Removable tank with swarf conveyor Pick-up : Synchro pick-up Pick-up brake Rodpfjun Sfxsx Aazon Hydraulic slide for back machining Other attachments and special attachments on request

Year of construction: 2025, condition: new, Single needle compound feed sewing machine With - thread cutter - bachtack - quick stroke - foot lever - Double stitch length 12 mm - M-type motor with panel - electronic handwheel Merhaletex sewing machine Rodpswi I Saefx Aazen Merhaletex has been around for over 20 years and is always there for our customers. That is our strength. We can offer you the entire program and translate your wishes into the right sewing machine for your work. Of course, the service does not stop with the delivery of a sewing machine. We are also there for you after delivery. New and used industrial sewing machines FOR ALL INFORMATION PLEASE CONTACT US NOTHING CHEAPER THAN AT MERHALETEX 8500 EURO EX VAT EX SHIPPING We buy and sell industrial sewing machines NEW and used The advertisement was automatically translated. Translation errors are possible.

Condition: good (used), Year of construction: 2018, total length: 930 mm, total width: 800 mm, total height: 910 mm, power: 9 kW (12.24 HP), input voltage: 400 V, Outer casing and feet in stainless steel. Adjustable worktop height, ranging from 840 to 900 mm. Strong double-walled self-balancing lid,2 mm thick AISI 304 stainless steel cooking pot, with bottom made in compound . Thermostatically-controlled cooking temperature range from 100 to 280°C. Electric model: Armoured incoloy heaters for cooking operations. IPX5 protection against water splashes. Rjdpjtr Ayqefx Aazen

Condition: good (used), functionality: fully functional, Complete plywood manufacturing line including: Rsdpfx Aasul Uizezsn 1 BUERKLE compounding line year 1991 with BUERKLE roller gluer length 3400 mm + 1 OLM long-wire sender + 1 OLM cross-wire sender + 1 assembly table. 1 press loading basket with 10 positions. 1 BVH 10-stage press with thermal oil heating platens. - Platen size: 3700 x 1900 - Platen thickness: 40 mm - Opening between platens: 75mm - 1 central cylinder D700 mm, max. hydraulic pressure 315 Kg/cm². 1 press unloading basket with lateral evacuation pushers on lifting table. Line currently in operation, available second half of 2025.

Condition: ready for operation (used), Year of construction: 1995, Mostana 1M63 x 3000mm Gap Bed Centre Lathe Max’ distance between centres 3000mm Max’ swing Over Bed 700mm Max; swing over cross silde 350mm Max’ swing in gap 900mm Spindle Bore 105mm Spindle Speeds 10-1250 rpm Spindle Motor 15kW Cross slide travel 400mm Year 1995 Machine complete with: Rjdpfx Ajwf Sfveazsn Sony LH70 2 axis Digital Readout Interlocking chuck guard Taper turning through compound slide 500mm 4 jaw chuck 390mm 3 Point fixed steady Rapid power traverse 4 way tool post Change gears coolant For sale with *Jet Machinery Ltd* Jet Machinery Stock No: #78739 Machine Serial Number: 1688 Cost: £14,950.00 + VAT Whilst every effort has been made to ensure that the above information is accurate it is not guaranteed. We advise prospective purchasers to check any vital details. Health and Safety At Work Act 1974: It is not reasonably practical for ourselves as suppliers to ensure that for your application the goods comply with requirements of the Act with respect to guarding etc. Prospective purchasers should ensure that a guarding specialist inspect the goods prior to use.

Condition: new, A heavy duty German built radial arm crosscut saw with swivel and tilting capability and a large cutting capacity of up to 200mm deep. A unique feature on this model of machine is that when angle cutting is required the saw unit pivots about a central point thus always maintaining the same cutting length. Both optional vertical (tilting) and standard horizontal (swivel) angles can be adjusted manually with either graduated scales or with an optional digital display unit for reading the position. The saw is also available with an optional automatic NC positioning system with 4 memorised pre set positions. The machine is ideally suited for easy and accurate cutting of compound angles for furniture and joinery components. The machine can be specified to cut wood, aluminium, plastics or composite materials. Precision ball bearing movement on hardened steel runners. Sturdy cast iron construction with steel base stand Heavy duty 5 KW motor. Spring return of saw carriage. 1 x 520mm dia TCT x 4.4mm kerf x 50mm bore - 60 teeth WZ saw alternate bevel. 50mm spindle diameter. 22 - 90 - 45 horizontal movement. (Swivel) 30 - 90 - 60 vertical movement. (Tilt - optional N model) Adjustable upper protection. 520mm TCT sawblade Z60. Cutting Capacity: 420 wide x 200mm deep at 90 degrees. 295 wide x 200mm deep at 45 degrees. 420 wide x 140mm deep at 45 degrees. (Tilt- optional N model). Rodpody Hm Nofx Aazon Dust extraction outlet 100mm. Working height of table 900mm

Condition: good (used), Year of construction: 2019, machine/vehicle number: 25728, Equipped with: Hydraulic Unit Sinumerik 840D sl CNC Control Slim Line Operator Panel OP012 W/12 TFT-Color Display 19" Machine Control Panel 20 Tool ATC CAPTO C6 Multifunctional Tool Carrier For Turning and Driven Tools One Fixed Tool Unit Assembled To The Compound Slide W/Coolant Thru The Turning And Drilling Tools, Coolant For The Driven Spindle From The Outside Drilling Spindle Additional Drill Spindle For Orientation Chip Conveyor Coolant Equipment -Including piping and shut-off valve and flow control switch -To supply coolant to tools for coolant and flushing through the cutting tools -To supply coolant for flushing the work piece and chuck -To supply coolant for flushing the working area Paper Band Filter Immersion Cooler High Pressure Coolant Pump, 40 Bar Through Tools Flushing Pistol, Hand Held Air Cleaner - Mechanical Separation "Mist Collector" Tool Life Display Remote Diagnostics Signal Lamp Automatic Door For Loading W/Shuttle Load and Unload Shuttle Swivel Loader Automation Cell Tuned for Part Pallet Conveyor For 20 Raw And Finished Parts Pallets Pallets Designed for Part 596500 Handling System SPC Station (Maximum O 270 mm, Maximum H 150 mm, Maximum Wt. 12 kg) NIO Station (Closing forward leading gravity) Skiving Software (Hardware: Software and user surfaces for skiving technology) Measuring Probe (For measuring diameters and length of the workpiece in the machine) Measuring Software for Teeth Measuring (MDK and Flank Line, Software and User) Measuring Program (Automatically measuring program for measure the position of the two gears to each other, after using sister tools) SPC (Every X workpieces the MDK needs to be measured) Tool Changer (Precut, measurer and final cut) Skiving Tool Identification (Hardware, software for the identification of the skiving tool after tool change) Hydraulic Diagrams Coolant Diagrams Lubrication Diagrams Electrical Wiring Diagrams Hardcopy of Diagrams CF Certificates Specifications: Workpiece Spindle: -Speed: 0-7000 l/min -Power: 55,2 - 59,7 kW Tool: Capco C6 Tool Spindle: -Speed: 0-6000 l/min -Power: 29 - 41 kW Machine Weight, Floor Space and Voltage Supply: -Operating Voltage: 400V, 3 Phases, 50 Hz Rodpfsw Iqumex Aazon -Control Voltage: 24 V -Lighting Voltage: 240 V, 50 Hz -Floor Space: 2,700 x 2,600 mm -Height: 4,000 mm -Total Weight, Approximate: 16,000 kg Longitudinal, Z-Axis: -Stroke: 800 mm -Rapid Rate: 24 m/min -Feed Force: 12 kN Transverse, X-Axis: -Stroke: 900 mm -Rapid Rate: 24 m/min -Feed Force: 12 kN Tool Spindle, B-Axis: -Range: -20 / +90 Degree Y-Axis for Spindle Unit: -Stroke: 200 mm -Rapid Rate: 12 m/min -Feed Force: 6 kN C-Axis Main Spindle: -Positioning Accurace: 9" Multifunctional Tool Carrier: -Power: 29 kW at 100% ED -Power: 41 kW at 44% ED -Torque: 141 Nm at 100% ED -Torque: 212 Nm at 44% ED -Spindle Speed: 0-6000 min-1 -B-Axis for Stepless Motion in a Range Of: -20/+90 Degree Tool Magazine: -Maximum Tool Diameter: 100 mm -Approximate Tool Length: 300 mm -Approximate Tool Weight: 12 kg Swivel Loader: -Maximum Workpiece Diameter: 270 mm -Height: 150 mm -Weight: 16 kg

Year of construction: 2002, operating hours: 1,378 h, condition: good (used), Brand: Berstorff Type: ZE 25 compounding line Serial no.: 90200771-0010/2002 Year of manufacturing: 2002 Operating hours: 1,378 Screw diameter: 25 mm Screw L/D: 44 Dimensions (LxWxH): 4,500 x 1,200 x 2,200 mm Weight: 1,350 kg Line configuration: – 1x gravimetric powder feeding system from Brabender – 1x vent port for degassing, including vacuum pump – Filament die with 6 cavities – Cooling roll with tempering unit – Pelletizer with adjustable speed – Central control cabinet Redpfoyf Itnsx Aazsn Other: All documentation available in German The machine was originally used for biomaterials

Year of construction: 2015, operating hours: 1,378 h, condition: good (used), Brand: COLLIN Lab & Pilot Solutions GmbH Type: ZK 25 compounding line Serial no.: 5251-38-15 Year of manufacture: 2015 Operating hours: 1,378 Screw diameter: 25 mm Screw L/D ratio: 48 Connected load: 36 kW Dimensions (LxWxH): 5,000 x 1,200 x 2,200 mm Rodpfxsyf Idms Aazon Weight: 1,350 kg Line configuration: – 2x Gravimetric feeding systems from Coperion – 1x Side feeding with two possible placements – 2x Liquid dosing units – 1x Vent port for degassing, including vacuum pump – Filament die with 1 cavity – Filament die with 4 cavities – FECON system for process data monitoring – Silicone conveyor belt with active air cooling – Pelletizer with adjustable speed Other: All documentation available in German. Other languages upon request.

Year of construction: 1993, condition: excellent (used), functionality: fully functional, Werner & Pfleiderer Twin-Screw Extruder ZSK 40 – Excellent Condition For sale is a Werner & Pfleiderer (WP) ZSK 40 co-rotating twin-screw extruder. Technical Specifications: • Machine Type: ZSK 40 • Screw Diameter: 40 mm • Screw Length: 7 barrels × 4 D → approx. 28 L/D • Main Drive: 34.5 kW • Motor Speed: 1,800 rpm • Screw Speed: 40 – 400 rpm • Max. Torque per Screw Shaft: 325 Nm • Heating: Electric, connected load approx. 17 kW • Cooling: Water chiller unit • Temperature Control Zones: 6 zones • Barrel Temperature Sensors: 6 • Material Temperature Sensor: 1 • Material Pressure Sensor: 1 Barrel Configuration: • Feed barrel with liquid injection port • Open barrel with insert and 2 liquid injection ports Rsdpfx Aaoycuuyozjn • Multiple closed barrels with ports for liquid injection or measurement points • Degassing barrel General Features: • Co-rotating, closely intermeshing (self-cleaning) screws • High mixing and dispersing performance thanks to modular mixing and kneading elements • Modular system for screws and barrels • Drive section and process section mounted on stable base frame Fields of Application: • Plastics compounding • Masterbatch • Additive and filler incorporation • Laboratory and pilot plant use • Formulation and product development Condition & Runtime: According to the operating hour counter, the machine has run for less than one year and is therefore in excellent, nearly as-new condition. The screw elements are also as new. Options & Customizations: Upon request, we can design and install suitable tooling, such as strand dies, and integrate additional peripherals such as screen changers, pelletizing units, dosing technology, or other customer-specific components. The machine can thus be configured and delivered ready-for-operation according to customer requirements.

Condition: new, Year of construction: 2023, operating hours: 300 h, functionality: fully functional, turning length: 2,880 mm, spindle motor power: 90,000 W, type of input current: three-phase, For sale: new compounding line with a real capacity of 300kg/h. The line includes hot and cold mixers, a twin-screw extruder (2 twin screw extruder) with two feeding points—at the start of the screw and from the side—suitable for high loading of dry substances. Features include a vacuum pump, hydraulic screen changer, vibro table, and storage silos for materials. The line can process powdered materials, hard materials, various grindings, mixtures, and granules of PP, PE, and PVC. It can produce high-quality masterbatch, fillers, and other products. Up to 85% dry matter content. The machine is practically brand new, only tested for a few hours. Control with frequency inverters. A set of spare parts, spare heaters, and spare screw segments is included. Possibility to test with your own materials. Rsdpfxex Uqyqe Aazjn

Year of construction: 1998, condition: good (used), Part of an old direct extrusion line for pipes (which is also still available). This machine is supplied with the following components: - 4-component Colortronic dosing system (new control installed in 2017) - Berstorff KMC 85/2 (screws renewed in 2019) Rodpox S Rimefx Aazsn - Sidefeeder - Complete control system for dosing and extruder - Single-circuit oil tempering - Maag melt pump

Year of construction: 2007, condition: ready for operation (used), functionality: fully functional, REIFENHÄUSER REITRUDER RZE 85 41:D Year of manufacture: 2007 Drive/Motor: 265 kW Screw diameter: 85 mm Output approx. 1,000 kg/h Includes gear pump, dosing station, and working platform Last application: The system was used for producing PP pipes up to a diameter of 630 mm. The Reitruder technology operates with co-rotating screws. We have adapted this twin-screw technology for use in direct extrusion lines—primarily for inline compounding. This integration combines several process steps into one. Sustainability Process 100% recycled material In combination with efficient vacuum units, the Reitruder technology enables you to process recycled PET bottle flakes directly—without the need for energy- and time-intensive pre-drying. Cost-effectiveness Reduce raw material costs by 30% Our Reitruder twin-screw technology processes high levels of additives and fillers. Instead of using pre-mixed compounds, fillers such as calcium carbonate or talc are continuously mixed in. Simultaneously, direct extrusion reduces energy costs compared to the conventional two-step compounding process. Without intermediate solidification and remelting of the plastic, the Reitruder processes materials from raw input to finished product in a single run. Direct Extrusion High quality without detours With direct extrusion, you can achieve quality levels for semi-finished and finished products that previously required considerable technical effort. Utilize today’s technology to combine various process stages into one single step. Reitruder RZE 85 EXTRUSION Among other innovations, the co-rotating twin-screw extruder Reitruder RZE 58 was the highlight of Reifenhäuser’s presentation at the NPE trade fair. A differentiated concept with new design elements was introduced. The screw geometry has been adapted to meet changing requirements by incorporating deeper channel depths and a redesigned feed section. These modifications improve feeding when processing PET flakes or regrind and increase the capacity for adding fillers. This results in significant advantages when processing lower-quality raw materials. Furthermore, increased degassing efficiency enables processing of material with moisture levels up to 0.5%. As a result, pre-drying requirements are minimized. Applications • Compounds • Recycled polymers • Thermoforming films • Cast films • Blown films • Foam films and boards • Packaging tape Redpfsyczlfjx Aazen Price: €35,000.00 LOCATION: SACHAL EXTRUSIONSMASCHINEN D-26345 Bockhorn-Grabstede Phone = WhatsApp

Year of construction: 2025, condition: new, Stock No. 2846 Compounding Extruder Type Alphatec AD-.S 75 with: Segmented screws, co-rotating, intermeshing screw design Cylinder water/medium cooled/temperature-controlled Throughput up to 1200 kg/h - material-dependent Drive 250 kW - AC 48 L/D R+W safety gear coupling 3x degassing zones, 1x vacuum pump with condensate separator 2x side feeders type ZS-B Siemens Touch HMI control OPTIONAL: > Melt filter/screen changer > pelletizing systems: ST strand, WRG water ring, or UWG underwater pelletizing > Screw configuration according to your requirements > Material dosing/blending : volumetric or gravimetric > Additional accessories Visit us at our Wuppertal plant. Redped Hqa Iofx Aazsn The system is ready for demonstration, test run date with your material after arrangement

Year of construction: 2025, condition: new, functionality: fully functional, machine/vehicle number: 2846, We offer, successfully since more than 12 years, installed in all over EU, our new compounding extruders/lines : e.g. Type Alphatec AD-.S 75 with: Segmented, Co-Rotating intermeshing, cylinder water / medium cooled Throughput performance up to 1000 kg/h - depending on the material Drive 132 kW - 250 kW L/D Ratio - according to processing needs Degassing zones - as desired Rsdpfx Aoi Dtbisazen Side feeder type ZS-B - as desired OPTIONAL: > Melt filter/screen changer > Pelletizing systems: strand ST- , water ring WRG or Underwaterpelletizing UWP > Screw configuration according to your needs > Material dosing: volumetric or gravimetric > further accessories Visit us at our Wuppertal plant. Trail-run with your material-mix possible, darte and details uopn request.

Year of construction: 2025, condition: new, functionality: fully functional, machine/vehicle number: 2846, Stock No. 2846 Compounding Extruder Type Alphatec AD-.S 75 with: Segmented screws, co-rotating, intermeshing screw design Cylinder water/medium cooled/temperature-controlled Throughput up to 1200 kg/h - material-dependent Drive 250 kW - AC 48 L/D R+W safety gear coupling 3x degassing zones, 1x vacuum pump with condensate separator 2x side feeders type ZS-B Siemens Touch HMI control OPTIONAL: > Melt filter/screen changer > pelletizing systems: ST strand, WRG water ring, or UWG underwater pelletizing > Screw configuration according to your requirements > Material dosing/blending : volumetric or gravimetric > Additional accessories Visit us at our Wuppertal plant. The system is ready for demonstration, test run date with your material after arrangement Rjdji Dtbujpfx Aazjn

Year of construction: 2025, condition: new, functionality: fully functional, machine/vehicle number: 2846, Stock No. 2846 Compounding Extruder Type Alphatec AD-.S 75 with: Segmented screws, co-rotating, intermeshing screw design Rodpfx Aaei Dtb Aezjn Cylinder water/medium cooled/temperature-controlled Throughput up to 1200 kg/h - material-dependent Drive 250 kW - AC 48 L/D R+W safety gear coupling 3x degassing zones, 1x vacuum pump with condensate separator 2x side feeders type ZS-B Siemens Touch HMI control OPTIONAL: > Melt filter/screen changer > pelletizing systems: ST strand, WRG water ring, or UWG underwater pelletizing > Screw configuration according to your requirements > Material dosing/blending : volumetric or gravimetric > Additional accessories Visit us at our Wuppertal plant. The system is ready for demonstration, test run date with your material after arrangement

Condition: new, Year of construction: 2025, operating hours: 2,846 h, functionality: fully functional, machine/vehicle number: 2846, We offer, successfully since more than 12 years, installed in all over EU, our new compounding extruders/lines : e.g. Type Alphatec AD-.S 75 with: Screw diameter 73 mm Segmented, Co-Rotating intermeshing, cylinder water / medium cooled Throughput performance up to 1000 kg/h - depending on the material Drive 132 kW - 250 kW L/D Ratio - according to processing needs Degassing zones - as desired Side feeder type ZS-B - as desired OPTIONAL: > Melt filter/screen changer > Pelletizing systems: strand ST- , water ring WRG or Rodpfxoi Dtbqs Aazon Underwaterpelletizing UWP > Screw configuration according to your needs > Material dosing: volumetric or gravimetric > further accessories Visit us at our Wuppertal plant.

Year of construction: 1996, condition: reconditioned (used), No.: 2590k 1 used compounding-pelletizing line – output up to 1200 kg/h depending material, equipped with: 1x gravimetric ( loss-in-weight ) blending unit 5-Components SITECOM incl. control board 1x Extruder Twin-screw THEYSOHN Type TSK 90 Screws 2x Ø 90 mm – 36 LD co-rotating intermeshing Segmented screws-and Cylinder, Water / Medium cooled Extruder Motor 255 kW-DC / Screw speed up to 300 r.p.m. 1x Side feeding extruder TSD 75 twin-screw with 3 kW 3x venting ports 1x Melt-Filter Type K –HS- Y 176 mm incl. Hydraulic Pack 1x Melt-Pump with motor 22 kW 1x Strand die-head with holes 32 x Ø3,5 mm 1x Strand cooling bath 620 x 5000 mm 1x Strand pelletizer SG 300 with 11 kW ResoTec Monitor control Board Inspection visit / demonstration shortly possible - date on appointment You´re welcome. More compounding pelletizing lines ex pour workshop available, find our most-recent stock-list online on our homepage. Rsdpfx Aaoh Eyd Ajzsn

Year of construction: 2017, condition: used, screw size 30 mm Rodpsb Niqhsfx Aazsn Capacity 1000 kg/h Drive 240 kW L/D

Year of construction: 1996, condition: reconditioned (used), No.: 2590k 1 used compounding-pelletizing line – output up to 1200 kg/h depending material, equipped with: Extruder Twin-screw THEYSOHN Type TSK 90 Screws 2x Ø 90 mm – 36 LD co-rotating intermeshing Segmented screws-and Cylinder, Water / Medium cooled Extruder Motor 255 kW-DC / Screw speed up to 300 r.p.m. 1x Side feeding extruder TSD 75 twin-screw with 3 kW 3x venting ports 1x Melt-Filter No. 1 type K –HS- Y sieve/Mesh 176 mm incl. Hydraulic Pack 1x Melt-Pump with motor 22 kW 1x Melt-Filter No. 2 type K-SWE 180 RS back-flush self-cleaning 1x Strand die-head with holes 32 x Ø3,5 mm 1x Strand cooling bath 620 x 5000 mm Rodjgbffvepfx Aazon 1x Strand pelletizer SG 300 with 11 kW ResoTec Monitor control Board Inspection visit / demonstration shortly possible - date on appointment You´re welcome. More compounding pelletizing lines ex pour workshop available, > find our most-recent stock-list online on our homepage.

Year of construction: 2010, operating hours: 29,000 h, condition: excellent (used), Category: Twin-screw extruder Number: DE27699 Manufacturer: Coperion - Werner & Pfleiderer Type: ZSK 50 MCC+ Year: 2010 Screw diameter: 2 x Ø 50.0 mm L/D: 48:1 Motor: 129 kW Details: Co-rotating, segmented screws and barrel, vacuum pump, temperature control unit, 2x side feeders, 1x side degassing Rjdpfx Aaexykcgjzon The extruder is in very good condition and has only 29,000 operating hours. Options: 7-fold dosing system from Motan Colortronic, dryer (Motan LA 1200/4), IPS strand extraction, strand conveyor belt, water bath, granulator, vibrating screen. All options are available immediately at extra charge. This offer does not meet your requirements? Please visit our website Plama or send us your detailed enquiry. We offer suitable equipment for almost every budget.

Condition: new, DANFOSS Pack Controller AKPC781A 080Z0191 2204180 Function: Pack with heat recovery Communication: EA expansion Weight: 0.645 kg Analog inputs (AI): 11 Digital outputs (DO): 8 Maximum number of expansion modules: 11 Maximum number of fans: 8 Maximum number of compressor safety signals: 6 Maximum number of compressors: 10 Protection class: IP10 Display options: MMIGRS2, EKA 163B, EKA 164B, EKA 166 Frequency: 50/60 Hz Division: 25 Rjdpfxjwm Dq He Aazen Supply voltage: 24 V Power consumption: 8 VA

Condition: new, DANFOSS Compound Controller AKPC572 080G0320 138938 Function: CO2 compound Communication: MODBUS Weight: 0.629 kg Analog inputs (AI): 8 Digital inputs (DI): 8 Application: Power controller Number of batteries: 1 Battery type: Lithium coin cell (CR1620) Mounting method: DIN rail Front panel display: Yes Redpfxowm Diie Aazsn Frequency: 50/60 Hz Power consumption: 10 W Supply voltage: 24 V Further information: Relay 5,6 semiconductor type