Harrel, Incorporated , Norwalk, CT, USA, 06855, 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,
multi-zone controllers, or DIGIPANEL® controllers with a 15"
full-color LCD 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.
- WHAT'S DIFFERENT ABOUT
HARREL EXTRUSION SYSTEMS -- TOTAL CONTROL -- DIGIPANEL® control for a single
line -- plant-wide controls for an entire plant.
- TURNKEY EXTRUSION LINES
-- Overview of Harrel tubing, bump tubing, coextruded tubing, profile, and
sheet systems.
- PLASTIC EXTRUDERS, GEAR
PUMPS, AND GEARTRUDERS® Overview of precision
equipment for melting, mixing, and conveying plastic.
EXTRUDERS
AND SCREWS
- HARREL COUGAR SERIES
EXTRUDERS Rugged and reliable
plastics extruders using conventional discrete temperature controllers. ORDER
ON LINE!
- HARREL BOBCAT SERIES
EXTRUDERS. Rugged and reliable workhorse extruders. ORDER ON
LINE!
- HARREL TIGER SERIES
EXTRUDERS. Hi-Tech Extruders with sophisticated DIGIPANEL® controllers, with full
color displays, full graphics, and capability of TOTAL line control. ORDER
ON LINE!
- EXTRUDERS FOR MICROBORE
TUBING or for thin layers in co-extrusion applications for any
product. ORDER ON LINE!"
- GENERAL PURPOSE AND MIXING
SCREWS. For extruders of any manufacturer. ORDER ON LINE!
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-644 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-875 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 co-extrusion 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
stability 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 50
cc/rev. Special pumps for PVC. 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, multi-zone
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 multi-lumen 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 50 cc/rev, single
strand or DUOSTREAM(R) for virtually any polymer, including PVC.
- 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
- UPGRADE YOUR EXISTING
TUBING AND PROFILE LINES WITH A DIGIPANEL(R)
CONTROL SYSTEM. A complete line of upgrade packages, ranging from
multi-zone 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 TO EXISTING TUBING AND PROFILE LINES. Throughput stability
improved to 0.1%, versus 5% to 10% for extruder alone. Typically increases
throughput 15 -25%! Also makes possible totally automated control of
dimensions! ORDER ON LINE
- UPGRADE AN EXISTING
EXTRUSION LINE TO RUN BUMPTUBETROL(R), DOUBLE BUMP TUBETROL,
AND TRIPLE BUMP TUBETROL. Automated, closed loop control of OD and ID of
both bump and stem of each segment -- A Harrel exclusive! ORDER ON
LINE
MONITORING
OF SHEET THICKNESS AND AUTOMATED CONTROL OF SHEET PROFILE -- FOR NEW SHEET
LINES, OR FOR UPGRADES TO EXISTING ONES
The Harrel SHEETROL® process is a fully automated series of closed
loop controls providing control of both the machine direction thickness and the
cross-machine thickness profile for sheet systems of any manufacturer.
- 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.
- 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
compounding 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
multi-zone temperature controllers through control systems completely
integrated with SHEETROL(R) thickness and profile
control systems, as described in the above descriptions 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 heating only, the CP-644 20 zone, and the CP-875 60 channel
multi-zone controller, with 15"full color LCD graphics display. Adding
CP-540 expansion modules to the CP-875 allows control of any number of zones,
even into the hundreds!
A complete line of precision temperature sensors are 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, multi-zone
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!
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
multi-zone 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.
- CUSTOMER SUPPORT -- A
Statement of Policy.
- SERVICE CONTRACTS AND
ON-SITE TRAINING for Harrel Extrusion Systems. You undoubtedly have a
yearly service contract on your copy machine and your furnace. Why not on
your extrusion equipment? REGISTER ON LINE
- OPERATOR TRAINING COURSES
FOR HARREL TUBETROL(R)
automated tubing extrusion systems -- at Harrel! REGISTER ON LINE
- MAINTENANCE TRAINING
COURSES FOR HARREL SYSTEMS Training in the maintenance of Harrel
automated tubing extrusion systems -- at Harrel! REGISTER ON LINE.
- ITX INTERACTIVE TRAINING
COURSE BY DR. CHRIS RAUWENDAAL -- Learn about extrusion at your own
pace! A thorough training course in Extrusion fundamentals on 7 CD-ROM's. ORDER
ON LINE!
- Harrel EXTRUSION
ENGINEERING SEMINARS by Dr. Chris Rauwendaal. A comprehensive 2 1/2
day seminar on tubing and profile extrusion fundamentals. Includes
hands-on operation of an automated bump tubing line and an Alternate
Polymer line in the Harrel Plastics Development Laboratory. REGISTER ON
THE RAUWENDAAL SITE!
PEOPLE TO PEOPLE.
- HARREL, INCORPORATED
Who are we?
- VISITING HARREL --
Want to see more? Come visit!
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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