Harrel, Incorporated , East Norwalk, CT, USA, is the Hi-Tech company
in the plastic extrusion field. and in the field of instrumentation.
SUMMARY: The following is a summary of the particular areas of specialization of Harrel, Incorporated and a detailed index of the web pages which cover each one. To transfer to a page which gives details on any particular area of interest to you, click on the underlined phrases in the description in this index. Note that many items can be ordered on line, and paid for by credit card, if desired. More detail on any item may be requested directly from Harrel by clicking on the inquiry form request here and filling out.this form. Please let us know how we may be of service in any way!
EXTRUSION LINES AND ACCESSORIES -- OVERVIEW
PLASTICS EXTRUDERS, MELT PUMPS, GEARTRUDERS® , SCREWS. Exceptionally rugged and reliable extruders, melt pumps, and GEARTRUDERS (extruders with integrally mounted gear pumps) . May use 1/4 DIN discrete controllers, multizone controllers, or DIGIPANEL® controllers with 14" full-color display, for TOTAL control of an extrusion line of any type. The Harrel DUOSENSE®, deep-and-shallow-well sensing system is recommended for all barrel zones. Automated setting of trim values with Harrel AUTOTRIM® is optional for all temperature zones.
EXTRUDERS AND SCREWS
GEARTRUDERS® -- Extruders with integrally mounted gear pumps.
- PLASTIC EXTRUDERS, GEAR PUMPS, AND GEARTRUDERS(R). Overview of precision equipment for melting, mixing, and conveying plastic.
- HARREL'S "BOBCAT" LINE OF GEARTRUDERS(R) -- a rugged BOBCAT extruder plus a precision gear pump and a CP-643 DIGIPANEL controller. An excellent workhorse unit! ORDER ON LINE!
- HARREL'S "TIGER" LINE OF GEARTRUDERS(R). -- Same rugged and reliable extruder and precision melt pump as BOBCAT series but with sophisticated CP-873 DIGIPANEL controller with full color display and capabilities for TUBETROL(R), SHEETROL(R), PIPETROL(R), etc. TOTAL control of extrudate dimensions. Screw also has spiral Maddock and Saxton mixers. ORDER ON LINE!
- EXTRUDERS AND GEARTRUDERS(R) FOR MICROBORE TUBING or for thin layers in coextrusion applications for any product. ORDER ON LINE!
MELT PUMP SYSTEMS
MELT PUMPS STABILIZE EXTRUDER THROUGHPUT. The throughput stability of an extruder used alone is relatively poor -- typically 5% to 8% over a period of time. For any type of precision extrusion, or where automated control is desired, therefore, a precision melt pump should be used to meter the throughput to a stabililty of 0.1% typical. Melt pumps also increase output and lower the melt temperature -- important for degradable polymers. Harrel was a pioneer in adapting melt pumps for extrusion use. For new installations the melt pump control can be an integral part of the DIGIPANEL controller. For existing installations, an upgrade system can be added.
- STABILIZE EXTRUDER THROUGHPUT TO 0.1% USING A PRECISION MELT PUMP. Why a melt pump should be used in any precision application. For best accuracy differential pressure across the pump should be controlled, and of course RPM should be controlled to 0.001% with a Harrel DIGISYNCH® system. For new installations, melt pump control is incorporated into the DIGIPANEL® control on the GEARTRUDER®. Existing installations may be upgraded with Harrel upgrade packages.
- MELT PUMPS FOR EXTRUSION A complete line of melt pumps for extruders -- from 0.14 cc/rev to 750 cc/rev. Special pumps for PVC and for fluoropolymers. DUOSTREAM melt pump gives two identical melt streams, each stabilized within 0.1%.
- UPGRADE AN EXISTING EXTRUSION LINE WITH A PRECISION MELT PUMP for 0.1% throughput stability. Complete upgrade packages for existing extrusion lines. Includes melt pump, adapter flange, drive motor, gear reducer, differential pressure controller, and DIGISYNCH® control of melt pump speed to 0.001%, precision temperature control for melt pump and flanges, mounted in convenient sloping front cabinet.
TUBING AND PROFILE EXTRUSION SYSTEMS
Turnkey tubing and profile extrusion systems. Plus a complete line of extrusion components and accessories -- extruders, melt pumps, GEARTRUDERS®, extruder screws, dies, cooling troughs, vacuum sizing tanks, laser diameter gauges, pullers, cutters, and classifying conveyors. TUBETROL® gives automated, closed loop control of OD, ID, and length of extruded tubing. BUMP TUBETROL, DOUBLE BUMP TUBETROL, and TRIPLE BUMP TUBETROL give automated, closed loop control of OD, ID, and length of each segment. LIGHTSOUT system gives three shift operation with only two shifts of personnel. MIXTRUDER combines mixing equal to twin screw extruder with TUBETROL system. TUBETROL-PLUS adds automated closed loop control of viscosity, especially for polyurethanes and similar, critical plastics..
- TUBETROL(R) TURNKEY TUBING EXTRUSION LINES.
Totally automated Turnkey tubing systems. TUBETROL provides automated control of OD, ID, and length of straight tubing. BUMP TUBETROL, DOUBLE BUMP TUBETROL, AND TRIPLE BUMP TUBETROL give totally automated control of OD, ID, and length of each level. Single lumen or multi-lumen. Why would anyone ever want to control a tubing line manually, when TUBETROL automated control is available at the same or lower cost?
- HARREL HI-TECH ALTERNATE POLYMER TUBING LINES Start out with 100% polymer A and change seamlessly to 100% polymer B and back again!
- LIGHTSOUT EXTRUSION LINES. 3-shift operation with 2-shift staffing!
- SINGLEPASS EXTRUSION SYSTEMS -- Eliminates separate compounding operation. Combines precision turnkey tubing, profile, or sheet lines with compounding of multiple components equal to performance of twin screw extruder!
ACCESSORIES FOR TUBING AND PROFILE EXTRUSION LINES
- OVERVIEW OF EXTRUSION ACCESSORIES
-- Tubing Dies, water troughs, vacuum sizing tanks, ROLLERPULLERS, NOCLUTCH
Cutters
- EXTRUSION INSTRUMENTATION FOR TUBING OR PROFILE LINES
-- Temperature controllers, multizone temperature controllers, laser diameter
gauges, nuclear thickness gauges, pressure controllers.
- TEMPERATURE SENSORS --A complete line of the highest precision platinum RTD
sensors for control of plastics extruders and accessory equipment. Also includes surface and immersion sensing and sensors for general purpose applications. ORDER ON LINE!
- STERILE AIR SUPPLIES FOR TUBING EXTRUSION
-- Precision sterile air supplies for internal air, removal of
water, and conveyor blow-off. ORDER ON LINE!
- PRECISION TUBING AND PROFILE
DIES -- Standard and SPIRODIE construction. In-line and crosshead
dies for straight tubing, bump tubing, single or multilumen tubing,
and single layer or coextruded tubing. SPIRODIE eliminates weld lines caused by spider in die.
- PRECISION MELT PUMPS FOR TUBING OR PROFILE EXTRUSION -- 0.14 cc/rev through 750 cc/rev, single strand or
DUOSTREAM(R) for virtually any polymer, including PVC and fluoropolymers.
- MELT PUMP CONTROLLERS Stabilization of extruder throughput to 0.1% using a precision melt pump with differential pressure controller.
- HI-TECH VACUUM TANKS FOR TUBING OR
PROFILE EXTRUSION -- High precision control of vacuum holds
dimensions to very close tolerances. ORDER ON LINE!
- HIGH PRECISION WATER COOLING
TROUGHS FOR TUBING OR PROFILE EXTRUSION LINES -- Standard troughs, spray troughs, and 30/10 triple-pass
water cooling troughs for 30 feet of cooling in 10 feet of length. ORDER ON LINE!.
- PRECISION HI-TECH PULLERS AND CUTTERS
-- For tubing and profile. ROLLERPULLER gives much more uniform puller speed than belt puller. NOCLUTCH cutter eliminates clutch in older type cutters and greatly improves accuracy and life. ORDER ON LINE.
- PRECISION LASER GAUGES SPECIFICALLY DESIGNED FOR STATISTICAL QUALITY CONTROL. Single scan measurement gives true values of sigma (Most gauges average readings and give incorrect values of sigma.) ORDER ON LINE.
UPGRADES FOR EXISTING TUBING AND PROFILE LINES
SHEET EXTRUSION
Turnkey sheet lines, featuring SHEETROL®, a fully automated series of closed loop controls providing control of both the machine direction thickness and the cross-machine thickness profile. Plus a complete line of sheet line components and accessories -- extruders, melt pumps, roll stacks (which meet the new ANSI specs), thickness gauges, and TOTAL control systems for measuring, displaying, and controlling in-line thickness and cross-machine thickness profile for sheet systems of any manufacturer
TURNKEY SHEET EXTRUSION LINES
- TURNKEY HI-TECH SHEET EXTRUSION LINES Turnkey sheet extrusion systems featuring total DIGIPANEL® control of the extrusion line plus optional SHEETROL® automated control of sheet thickness, both in machine direction and cross-machine profile. Roll stacks meet latest ANSI standards.
MONITORING OF SHEET THICKNESS AND AUTOMATED CONTROL OF SHEET PROFILE -- FOR NEW SHEET LINES, OR FOR UPGRADES TO EXISTING ONES
- PRECISION MEASUREMENT OF SHEET, PIPE, BLOWN FILM, OR PROFILE with Harrel thickness gauges and accessories. ORDER ON LINE!
- TOTAL CONTROL OF SHEET EXTRUSION WITH HARREL SHEETROL(R) SYSTEMS. Overview and index of Harrel SHEETROL systems for monitoring of sheet thickness and automated control of sheet profile.
- BASIC, ECONOMICAL SYSTEMS FOR MONITORING AND CONTROL OF SHEET THICKNESS IN MACHINE DIRECTION ONLY.Simple gauging systems for measuring, displaying, and controlling sheet thickness in the machine direction only. ORDER ON LINE.
- SHEETROL(R) I: CLOSED LOOP CONTROL OF AVERAGE THICKNESS PLUS DISPLAY OF CROSS-MACHINE PROFILE. SQC read-out, total control of entire line, SHEETROL III stabilization of throughput, and SINGLEPASS on-line compounding optional. ORDER ON LINE.
- SHEETROL(R) II: FULLY AUTOMATED SHEET PROFILE CONTROL.. Automated control of sheet thickness both in machine direction and cross machine profile. SQC, total control of entire line, SHEETROL III stabilization of throughput, and SINGLEPASS on-line compouding optional. ORDER ON LINE!
- STABILIZE THROUGHPUT WITH A PRECISION HARREL MELT PUMP AND SHEETROL(R) III CONTROL. Stabilize throughput of the system to 0.1%. For new extrusion lines or as upgrade to existing ones.. ORDER ON LINE!
- STATISTICAL QUALITY CONTROL SYSTEMS FOR SHEET SQC systems for a single line or for the entire plant. ORDER ON LINE
- UPGRADE EXISTING SHEET LINES WITH A DIGIPANEL(R) CONTROL SYSTEM. A complete line of upgrade packages, ranging from multizone temperature controllers through control systems completely integrated with SHEETROL(R) thickness and profile control systems, as described in the above dexcriptions of SHEETROL I, SHEETROL II, and SHEETROL III. . The combination provides TOTAL, automated control of all functions of the sheet line. ORDER ON LINE!
INSTRUMENTATION
EXTRUSION LINE TEMPERATURE CONTROL for extrusion lines of any manufacturer.Harrel developed the plastics industry's first 3-mode (PID) temperature controllers in 1967, the industry's first plant-wide supervisory control system in 1968, and the industry's first microprocessor extrusion controller in 1975, All Harrel extruder temperature controllers are available with DUOSENSE® -- the deep-and-shallow-well extruder barrel temperature control system invented by Harrel. All may also have AUTOTRIM®, the Harrel system for automated setting of trim values.
Sizes are 1/4 DIN (4" x 4") for single channel heating only or heating and cooling, 1/4 DIN dual channel for single channel heating only, the CP-641 16 channel multizone unit, the CP-640 30 zone, and the CP-873 60 channel multizone, with 14"full color graphics display. Adding CP-540 slave modules to the CP-873 allows control of any number of zones, even into the hundreds!
A complete line of precision temperature sensors is also offered.
GENERAL PURPOSE INDUSTRIAL TEMPERATURE CONTROLLERS.
Harrel introduced the industry's first solid state PID temperature controllers into the plastics industry in 1967 and has continuously improved them ever since
- 1/4-DIN PLUG-IN DISCRETE TEMPERATURE CONTROLLERS and matching plug-in solid state power modules. Heating only or Heating and Cooling, Single or Dual Channel, AUTOTRIM(R). DUOSENSE(R). ORDER ON LINE
- MULTIZONE TEMPERATURE CONTROLLERS. Where many temperatures are to be controlled, multizone controllers are far more economical, give better performance, and offer higher reliability. ORDER ON LINE
- TEMPERATURE SENSORS -- A complete line of the highest precision platinum RTD sensors -- bayonet style, surface, and immersion styles for plastics equipment or general purpose industrial equipment. ORDER ON LINE!
MILITARY TEMPERATURE CONTROLLERS
MILITARY TEMPERATURE CONTROLLERS -- Harrel was a pioneer in mil spec temperature controllers, furnishing about half of the controllers for the Polaris missile, and almost all for the fire control system. Controllers for operation from 400 Hz, 60 Hz, 50 Hz, or from d-c. Output a-c or d-c. Military spec sensors as well.
MOTOR DRIVES & MOTOR SPEED CONTROL
- MOTOR DRIVES & MOTOR SPEED CONTROL. Digital drives to 250 HP. DIGISENSE® gives 0.5% accuracy and stability. DIGISYNCH® controls for Harrel drives, or for upgrading drives of any manufacturer, control to 0.001%. 1/4 DIN DIGISYNCH modules bring drives of any manufacturer to 0.001%. 1/4 DIN DIGISYNCH modules give exact synchronization of speed of any number of motors -- 0.000% steady-state synchronization error!
VISCOSITY MEASUREMENT AND CONTROL.
The trouble with most melt indexers and rheometers is that their measurements are typically made under conditions far different from those actually encountered in extrusion or injection molding. The Harrel VISCOTRUDER makes its measurement under real world conditions because measurements are made using an actual extruder!
- THE VISCOTRUDER A rheometer which measures apparent viscosity and intrinsic viscosity under real-world extrusion conditions -- because measurements are made in an actual extruder!
- Harrel VISCONVERTER converts any 1" Harrel GEARTRUDER® into a precision VISCOTRUDER capable of viscosity measurements made under true real world conditions because measurements are made using an actual extruder!
- Patented Harrel VISCONTROL system. For control of viscosity in an operating GEARTRUDER® Especially important with highly variable polymers like polyurethane.
SPECIALTY INSTRUMENTATION
- Harrel Length Controller controls extrudate length between any two events on an extruder of any manufacture.
- Harrel Melt Pressure Controller. The preferred method of stabilizing the throughput of an extruder is to use a melt pump with it. If for any reason this is not practical, controlling the pressure at the die will go a long way toward stabilizing the throughput.
UPGRADES TO IMPROVE PERFORMANCE OF EXISTING EXTRUSION LINES OF ANY TYPE
UPGRADES OF EXISTING PLASTICS EXTRUSION LINES; DIGIPANEL® control systems for total control of extrusion lines made by any manufacturer, melt pump upgrades to attain 0.1% stability in throughput, Upgrades of straight tubing lines for bump tubing, double bump tubing, or triple bump tubing, featuring automated control of OD, ID, and length of each stage. Upgrades of existing sheet lines to add close control of thickness, both in the machine direction and in the cross-machine profile.
- UPGRADE YOUR EXISTING LINES WITH A DIGIPANEL® CONTROL SYSTEM. A complete line of upgrade packages, ranging from multizone temperature controllers up through completely integrated control systems giving TOTAL, automated control of all functions on the line, plus automated closed loop control of product dimensions. ORDER ON LINE
- ADD A PRECISION MELT PUMP SUBSYSTEM. Throughput stability improved to 0.1%, versus 5% to 10% for extruder alone. Typically increases throughput 15 -25%! ORDER ON LINE
STATISTICAL QUALITY CONTROL
Harrel introduced the plastic industry's first plant-wide supervisory management and control system in 1968 and was a pioneer in adapting the Deming Statistical Quality Control concepts to extrusion systems. Complete monitoring and control of all lines from central console and existing desktop departmental computers.
- STATISTICAL QUALITY CONTROL SYSTEMS -- Plant-wide, for control, management, and SQC of an entire plant full of plastics machinery. Also single line SQC modules for a single extrusion line. ORDER ON LINE!
CUSTOMER SUPPORT, TRAINING COURSES, AND SEMINARS....
One of the most important factors in selecting a vendor is customer service, both before and after delivery of the product. Harrel offers outstanding service in both categories. And the most important factor (frequently overlooked) in operating an extrusion line is training -- of the operators, the maintenance personnel, engineers, and supervisors. Harrel offers a complete range of training programs -- both on-site and at the Harrel Plastics Development Laboratory.
PEOPLE TO PEOPLE.
New at Harrel:
- Looking for a replacement for PVC? Metallocene-catalyzed polymers
show real promise. However, they have special extrusion
characteristics. Take a look at the Harrel TURNKEY METALLOCENE
EXTRUSION LINES, optimized for those polymers!
- Have you ever wished that you could extrude a tube which is made from
one polymer at one end and another polymer at the other end -- all without
having to join two separate tubes together? Check out these new packaged
ALTERNATE POLYMER systems from Harrel!
For more information, please fill out our
inquiry form! We can also be reached at:
Harrel, Incorporated
16 Fitch Street
Norwalk, CT 06855
U.S.A.
TEL: (203)866-2573 / FAX: (203)866-1483
E-Mail: info@harrel.com
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