gravimax blenders & dosimax...
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Precision Blending
GRAVIMAX Blenders & DOSIMAX Feeders
Volumetric Dosing SystemsContinuous output from 70 g/h to 180 kg/h
Gravimetric Dosing SystemsDosing power up to 2150 kg/h
For Injection Molding and Extrusion
Single- and Multi-Component Dosing
Most Simple Operation and Cleaning
Gravimetric Blending SystemsDosing capacities up to 5,000 kg/h (11,000 lbs./hr.)
Single and Multi-Component Volumetric Blending SystemsContinuous output from 70 g/h to 180 kg/h (2.5 oz./hr. to 400 lbs./hr.)
For Injection Molding, Blow Molding and Extrusion
Simple Operation and Cleaning
Engineered to Be the Ultimate in Precision Blending
Large removable access windows
Removable large and small material hoppers
Unique metering pinch valves for consistent batch-to-batch accuracy(Real Time Live Scale “RTLS“)
High precision 24 bit technology load cells
Efficient mixer for homogenous blending
Easily removable safety door for clean out
Easily removable scale hopper
Long life air cylinder andsolenoid valves
Very Simple Operation
The user-friendly multi-task control ismenu driven providing:- Percent preset – ingredient values entered in % desired- Display operating conditions- Material identification data base- Recipe storage- Preset batch count- Miscellaneous reports
Unique MeteringPinch Valves - Dispense major and minor ingredients- Each valve consists of a sleeve and pinch bars which are not affected by the types of plastics processed, such as abrasive, dusty or irregular shaped materials- Extremely fast, efficient and reliable, these pinch valves precisely meter each material to the desired set point con- sistently
Fast Clean Out Feature Reduces Downtime - Large removable access window- Removable safety doors with quick release latches- Easily removable scale hopper for access to mixing chamber- Removable mixing paddle and stainless steel liner for efficient cleaning
Lids with hole pattern for mounting of WITTMANNFEEDMAX loaders
Material hoppers withhandles for easy handling
RTLS Technology
Material Savings Reduce Cost
90%
100%
90%
100%
90%
100%
1. 2. 3.
A unique 3-stage metering method achieves the most precise dispensing for batch-to-batch consistency and accuracy. This is accomplished by using progressively smaller dispensing algorithms to approach the target weight. Only one standard high precision valve is used for pellets, regrind and powder.
Step 1.Free-flow:Quick dispensing to near target weight.
Step 2.Coarse Pulsing:Controlled quick dis-pensing to be within grams of target weight.
Step 3.Fine Pulsing:Controlled high frequency dispensing precisely to target.
Batch-to-batch accuracy means no overuse of high cost resins, optimizing the material consumption for the product requirement. Every batch is consistent and to the desired formula. No “hunting“ or statistical averaging to achieve the required target.
0
1
2
3
4
5
6
5 10 15 20 25 30
[Lotti]
[g]
Wittmann
Concorrenti
Free-flow
Coarse pulsing
Fine pulsing
Where do the savingscome from?
By ensuring batch-to-batch accuracy by means of RTLS (Real Time Live Scale) techno-logy the operator can set the percentages to the required minimum level. As competitive blending methods are constantly overdosing and underdosing the minimum needs to be set to allow any underdosed batch to still be at the requested percentage. This results in overdosing all other batches, sometimes even significantly, causing tremendous excess material usage. RTLS can pay for itself in just a couple of months!
In the above example, a blend of 1.8 g has been set. Real data demonstrates thedifference between RTLS and competitive methods.
GRAVIMAX Blender GMX Series 1
GRAVIMAX Blender GMX Series 3
Up to 130 kg/hr (295 lbs./hr.) throughput
Up to 340 kg/h (750 lbs./hr.) throughput GMX 34R with optional minor ingredient hoppers
GMX 14R
Fast Clean Out Features for Minimum Downtime
Entire transparent polycarbonate front panel is easily removed to access and clean weigh hopper, mixing chamber and mixing paddle.
Stainless steel weigh and mixing chambers are easily removed for cleaning.
All hoppers are removable for easy cleaning or color change.
Batch Size 1 kg (2.2 lbs.)
Pinch Valve 50 mm (2“)
Lid prepared forFEEDMAX200 Series
Max number of Dosings
4
Bin Size 1–4 8 l (10 lbs.)
Batch Size 3 kg (6.6 lbs.)
Pinch Valve 50 mm (2“)
Lid prepared forFEEDMAX200 Series
Max number of Dosings
4
Bin Size 1–4 16 l (20 lbs.)
GRAVIMAX Blender GMX Series 5
GRAVIMAX Blender GMX Series 18 and 27
GRAVIMAX Blender GMX Series 9
Up to 455 kg/hr (1,000 lbs./hr.) throughput
Up to 545 kg/hr (1,200 lbs./hr.) throughput
Up to 5,000 kg/hr (11,000 lbs./hr.) throughput Engineered solutions for up to 4,500 kg/hr(10,000 lbs./hr.) throughput
GMX 56
GMX 98
Floor stand mezzanineFloor stand
Batch Size 9 kg (20 lbs.)
Pinch Valve 75 mm (3“)
Lid prepared forFEEDMAX300 Series
Max number of Dosings
8
Bin Size 1–4 79 l (100 lbs.)
Bin Size 5–8 34 l (40 lbs.)
Batch Size 18 kg (40 lbs.)
Pinch Valve 100 mm (4“)
Lid prepared forFEEDMAX400 Series
Max number of Dosings
8
Bin Size 1–4 147 l (180 lbs.)
Bin Size 5–8 34 l (40 lbs.)
Batch Size 27 kg (60 lbs.)
Pinch Valve 150 mm (6“)
Lid prepared forFEEDMAX400 Series
Max number of Dosings
8
Bin Size 1–4 158 l (200 lbs.)
Bin Size 5–8 68 l (80 lbs.)
Batch Size 5 kg (11 lbs.)
Pinch Valve 50 mm (2.5“)
Lid prepared forFEEDMAX300 Series
Max number of Dosings
6
Bin Size 1–4 76 l (94 lbs.)
Bin Size 5–6 34 l (40 lbs.)
Standard Features
Gravimetric Control of Up to Eight (8) Components
Pinch Valve Technology Precise metering through Adaptive Control algorithms
RTLS (Real Time Live Scale) Measurement For consistent batch-to-batch accuracy
“On the Go“ Feature Change recipes and parameters without stopping production
Reports Cycle, total run and inventory reports
Connectivity Options Wireless intranet and LAN connectivity, compatible with central PC systems, laptops and PDAs
Smart Regrind Mode Optimizes regrind use by monitoring availability
Algorithms Anti-bridging algorithm to prevent material buildup, Auto Tuning Dispense algorithm for each valve (HRBplus)
Menu Driven Format All selections are easily and quickly accessed
Percent Preset Each ingredient value entered in %
Unit Values Operates in metric or imperial
Display Operating Conditions Displays the recipe running, process rate and batches processed
Materials Identification Alphanumeric key pad
Recipe Storage 100 recipes stored on the local memory
Preset Batch Count Blender will automatically shutdown when count is achieved
Mixing – Timed or Continuous
Communication Ports Ethernet communication, optional
Reports Continuous batch cycles, Total batches, Inventory and Stored Recipes
Security Multi-level password, Administrator and User
Sturdy Heavy-Duty Construction Frame, hoppers, scale and load cell assemblies designed for durable operation
Control Panel Standard electrical components for reliable operation and easy maintenance
Power Supply 110 V / 240 V / 1 / 50–60 Hz
XLB Blender Control
WITTMANN‘s Blender Control –Designed for Simplicity, Ease-of-Useand High Efficiency
The large easy-to-see buttons on the touch screen make it easyto operate in all types of light conditions and ensures the operatorhas a large surface area to make changes or adjustments in theoperation of the blender.
XLB Screen
XLB Control
Special Features - Off-the-shelf PLC microprocessor controller- One XLB control panel can handle multiple gravimetric blenders to reduce the overall cost of controls
GRAVIMAX Blender Selection
Extrusion Yield Control
Model Description Batch Size Capacity
kg lbs. kg/hr lbs./hr.
GMX 12R 2 Materials 1 2.2 160 352
GMX 13R 3 Materials 1 2.2 145 319
GMX 14R 4 Materials 1 2.2 130 286
GMX 32R 2 Materials 3 6.6 500 1,100
GMX 33R 3 Materials 3 6.6 362 800
GMX 34R 4 Materials 3 6.6 340 750
GMX 34 4 Materials 3 6.6 340 750
GMX 35 5 Materials 3 6.6 263 580
GMX 36 6 Materials 3 6.6 226 500
GMX 54 4 Materials 5 11 615 1,350
GMX 55 5 Materials 5 11 500 1,100
GMX 56 6 Materials 5 11 455 1,000
GMX 94 4 Materials 9 20 1,130 2,480
GMX 95 5 Materials 9 20 900 1,980
GMX 96 6 Materials 9 20 815 1,790
GMX 97 7 Materials 9 20 680 1,496
GMX 98 8 Materials 9 20 545 1,200
GMX 184 4 Materials 18 40 2,495 5,500
GMX 185 5 Materials 18 40 1,995 4,400
GMX 186 6 Materials 18 40 1,770 3,900
GMX 187 7 Materials 18 40 1,590 3,500
GMX 188 8 Materials 18 40 1,495 3,300
GMX 274 4 Materials 27 60 2,955 6,500
GMX 275 5 Materials 27 60 2,600 5,700
GMX 276 6 Materials 27 60 2,500 5,500
GMX 277 7 Materials 27 60 2,400 5,300
GMX 278 8 Materials 27 60 2,300 5,100
Model Description Batch Size Capacity
kg lbs. kg/hr lbs./hr.
Special features: - Maintains gauge, width and layer composition of the final film product- Controls all line operating parameters including temperatures, co-extrusion layer ratio and haul-off speed (line speed)- Maintains the desired temperature profiles for all extruders and die zones according to the recipe of the product being made (optional low cost feature)- Controls extruder speeds according to the gravimetric monitoring of the material flow and desired gauge of every layer in the multi-layer film structure- Performs gauge profile monitoring (optional, requires infrared or ultrasonic sensor)- Provides real time trending for all major line parameters- Unlimited recipe storage on the local Flash memory- Performs alarms monitoring- Build-in data historian (requires external relational database)- Generates reports (per roll, order, shift, etc.)- Screen size: 10 inches
Excel Series XLCP-220Mono Layer & Co-Extrusion Yield Control
Yield The XLCP-220 controls extruder speeds according to gravimetric monitoring and maintains gauge and layer composites of the final film product.
Blending Exact blending every time with continuous monitoring of the weigh scale during the dispensing of each batch.
Loading The XLCP-220 can handle virtually unlimited numbers of loaders and pumps optimizing the loading process to the full extent.
Power Supply 110 V / 240 V / 1 / 50–60 Hz 24 VDC communication cable
DOSIMAX Semi-Gravimetric Dosing Systems
DOSIMAX Table
Calibrator for MC 30DOSIMAX MC 30
Set % for injection molding and extrusion
Timer and relay mode for injection molding applications
Tachometer synchronization for extrusion applications
Keyboard lock: 4 levels
Integrated conveying control
Data memory for production and machine configuration
Full graphic LCD display with backlight
Man/machine interface via keypad foil
Neckpiece with cleaning door
Quick material discharge slide gate
2. The calibration result will be automatically saved.
3. Place the dosing unit on the neckpiece and the volumetric feeding starts with the exact settings.
1. Place the dosing unit on the calibrator and enter the production values.
Function MC Basic MC 12 MC 18 Calibrate
MC 30 Auto MC Balance MC Twin MB/ Regrind
Feeding principle volumetric volumetric volumetric volumetric + optionalgravimetric calibration
gravimetricloss-in-weight
gravi-/volumetricloss-in-weight
Calibration manual manual manual gravimetric intelligentor manual
complete grav.or manual
complete grav.or manual
Control functions
Revolution set manual manual manual automaticor manual
automaticor manual
automaticor manual
Time set manual
manual manual automaticor manual
automaticor manual
automaticor manual
Automatic dosingtime synchronization • • •
Extruder “Tachometer” Mode • • • •Set % additive for injection molding • • •Set % additive for extrusion • • •Additive for calibration mode • • •Production memory 1500 config. 1500 config. 1500 config.
Production records 2 x 24 hours 2 x 24 hours 2 x 24 hours
Interface communication via Ethernet • • •Interface communication RS 232/485 ° ° °Keyboard lock 1 Level 1 Level 1 Level 4 Levels 4 Levels 4 Levels
Integrated conveying control • • • •Material/Feeding capacity
Micro granules or free flowing powder • • • • • •BASIC-System 0.2 to 7 g/s • • • • • •GLX System* 0.07 to 1.6 g/s ° ° ° ° °GX System* 0.2 to 7 g/s • • • • • •A 20 System** 0.5 to 20 g/s ° ° ° •A 30 System** 2 to 50 g/s ° ° ° °
• = Standard; ° = Optional; *determined with master batch granules (bulk density: 0.81 kg/dm3); **only in combination with HT stepper motor
Specifications subject to change without notice.
DOSIMAX Volumetric Dosing System
Digital revolution setting from 0 to 200 rpm within 0.1 rpm steps
Digital time setting from 0 to 999 sec. within 0.1 sec. steps
Timer mode for injection molding applications
Keyboard lock: 1 level
4-digit, 7 segment LED at front display
Man/machine interface via keypad foil
DOSIMAX MC 12 and MC 18
DOSIMAX MC 12 Digital revolution setting from
0 to 200 rpm within 0.1 rpm steps
Digital time setting from 0 to 999 sec. within 0.1 sec. steps
Timer and relay mode for injection molding applications
Keyboard lock: 1 level
4-digit, 7 segment LED at front display
Man/machine interface via keypad foil
Neckpiece with cleaning door
Quick material discharge slide gate
Dosing Cylinder
DOSIMAX MC 18 Digital revolution setting from
0 to 200 rpm within 0.1 rpm steps
Digital time setting from 0 to 999 sec. within 0.1 sec. steps
Tachometer synchronization for extrusion applications
Constant dispensing through automatic adjustment of rotation speed
Integrated conveying control
Keyboard lock: 1 level
4-digit, 7 segment LED at front display
Man/machine interface via keypad foil
Neckpiece with cleaning door
Quick material discharge slide gate
DOSIMAX MC 12/18
DOSIMAX MC Basic
MC 12/18 Control
MC Basic Control
0.350
0.400
0.450
0.500
0.550
Common Dosing Augeragainst Dosing Cylinder
0.600
number of shots
g/sh
ot1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
DOSIMAX MC Basic
Many applications for the processing of additives and colors require small and repeatable material additions within tight tolerances. The dosing cylinder guarantees a uniform and repeatable flow throughout a wide range of applications.
Because of the constant speed of rotation, the dosing cylinder is actuated by a stepping motor. The specific design guarantees that the master batch is blended uniformly and precisely. The avoidance of any pulsing during blending provides maximum control of the process and the end product.
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