Automatic mapped external cooling correction
Correct the repeatable profile at the source coordinate
EGC links a compatible online total film profile to the correct radial cooling location, even when the die or haul off moves.
Addex manual and automatic gauge profile control
Addex is the equipment manufacturer. Gauge Advisor provides authorized Addex sales, application review and quotation support across the Western U.S. and Western Canada.
Blown Film Gauge Control for Fixed and Moving Profile Variation
Use MGC when repeatable fixed bands justify manual local airflow adjustment. Use EGC when a valid online total film profile can be mapped back to a stable bubble for automatic correction, including reviewed rotating and oscillating line configurations.
MGCManual localized airflow adjustment
EGCMapped automatic profile correction
Current EGC100 to 364 radial vanes
Addex is the equipment manufacturer. Gauge Advisor provides authorized Addex sales, application review and quotation support across the Western U.S. and Western Canada.Start with the profile pattern
Is localized gauge control actually the right correction layer?
MGC and EGC work best on repeatable circumferential total film variation. Random instability, average thickness drift and one-layer defects need a different first response.
Need the base air ring?Review LFR, Intensive Cooling, lip sets, blowers and external cooling.Modernizing the complete line?Coordinate gauge, movement, cage, controls and retained equipment.Layflat on an IBC line?Review DIBC active internal supply and exhaust control.Layflat without IBC?Review BIDS retained air inflation and deflation.
Fixed bands
Thick or thin areas remain tied to the same die position through consecutive profiles.
MGC or EGC candidateMoving bands
The pattern moves with a rotating die, oscillating haul off or another known coordinate.
Mapped EGC reviewRandom variation
The profile changes without a repeatable angular source or stable consecutive pattern.
Stabilize the process firstAverage thickness drift
The complete profile moves above or below target as output or haul off conditions change.
Review average gauge controlLayer-specific variation
Total film may look acceptable while one coextruded layer varies independently.
EGC cannot isolate one layerNeed help classifying the pattern? Use the blown film gauge variation guide before selecting correction hardware.
Interactive blown film selector
Build the preliminary system around the verified loss
Choose the profile pattern, line movement, measurement, cooling and bubble requirements. The selector helps separate an MGC or EGC project from an air ring, IBC, BIDS or complete retrofit path.
Preliminary only: Addex application review confirms the air ring, vane count, plenum, profiler, movement signals, controls, compatibility and written performance scope.
Choose the correction level
Manual local adjustment or mapped automatic correction?
The air ring still provides the external cooling foundation. MGC and EGC add different levels of circumferential gauge profile control to a suitable Addex architecture.
Manual local airflow adjustment
MGC / icMGC
Use MGC when the total film profile has repeatable fixed bands and periodic operator optimization is acceptable. Local mechanical adjustments change airflow around the circumference without an automatic profile loop.
Request an MGC review →EGCMapped radial cooling correction
Two stepper motors
Two stepper motors
Automatic mapped profile correction
EGC / icEGC
Use EGC when a compatible online total film profile can be mapped to a stable bubble and automatic localized cooling correction is justified by resin, quality or operator workload.
Review current EGC sizing →| Decision | MGC | EGC |
|---|---|---|
| Best starting fit | Repeatable fixed profile with acceptable manual adjustment | Repeatable profile requiring automatic mapped correction |
| Profile measurement | Useful for setup and verification | Compatible online total film profile required |
| Correction action | Operator changes localized airflow settings | Two stepper motor assemblies position the correction mechanism |
| Moving line | Manual relationship must remain understandable | Reviewed position feedback and coordinate mapping required |
| Operator role | Interpret the profile and make periodic adjustments | Stabilize, verify, enable automatic control and recover from upsets |
How automatic EGC correction works
Measure total film, map the source coordinate and change localized external cooling
The correction loop depends on a valid profile, stable process, correct transport delay and accurate movement information. EGC cannot correct a location it cannot reliably identify.
01 / MEASURE
Build the profile
A compatible scanner measures total film thickness around the flattened web.
02 / DELAY
Relate time to distance
Line speed and transport distance connect the measured film with when it left the bubble.
03 / MAP
Find the source angle
Gen3 applies the die and haul off position needed to locate the responsible radial coordinate.
04 / CORRECT
Change local cooling
The two motorized assemblies position the EGC correction mechanism across the radial vanes.
05 / VERIFY
Review the next profiles
The loop checks whether stable consecutive profiles improve without destabilizing the process.
Many radial vanes, two stepper motors
Current EGC distributes localized cooling through 100 to 364 physical radial vanes, depending on die size. Two stepper motor assemblies coordinate the complete correction mechanism. This concentrates actuation in serviceable assemblies while preserving dense circumferential airflow control.
Measurement boundary: EGC acts on the online total film profile. It does not independently identify or correct one coextruded layer. Review compatible online measurement architecture.
Current EGC new-build architecture
Single-inlet plenums and the current 100 to 364 vane guide
The redesigned EGC is optimized for manufacturability from higher-quality plate material. Current new-build plenums use a job-specific single inlet and are built in 2-inch diameter increments, like lip sets.
One external inlet, built for the job
The current single-inlet direction reduces external hose clutter and keeps the plenum, lip set, airflow and service access inside one reviewed factory configuration.
Opposing internal flow paths
The plenum distributes air around the circumference through opposing paths before it reaches the selected radial vane and lip architecture.
Round up when the die falls between listed sizes
Current EGC factory planning guide
This is the current new-build sizing guide supplied by Addex. Final air ring, radial vanes, plenum, lip set, blower, profiler, movement feedback, controls and performance follow the written quotation.
| Die Ø, in. | Die Ø, mm | Radial vanes |
|---|---|---|
| 6 | 150 | 100 |
| 8 | 200 | 114 |
| 10 | 250 | 126 |
| 12 | 300 | 144 |
| 14 | 360 | 152 |
| 16 | 410 | 170 |
| 18 | 460 | 180 |
| 20 | 510 | 192 |
| 22 | 560 | 216 |
| 24 | 610 | 224 |
| 26 | 660 | 238 |
| Die Ø, in. | Die Ø, mm | Radial vanes |
|---|---|---|
| 28 | 710 | 256 |
| 30 | 760 | 272 |
| 32 | 810 | 288 |
| 34 | 860 | 288 |
| 36 | 910 | 300 |
| 38 | 970 | 300 |
| 40 | 1020 | 308 |
| 42 | 1070 | 330 |
| 44 | 1120 | 336 |
| 46 | 1170 | 338 |
| 48 | 1220 | 364 |
Do not mix build vintages or mechanical configurations. Current new-build sizing follows the latest factory guide. Installed Gen3 and earlier systems may differ and require serial-number, drawing and mechanical verification.
Map rotating dies and oscillating haul offs separately
A scanner sees the flattened web after transport delay and downstream movement. Gen3 must reconstruct where that film originated at the air ring before EGC can apply correction to the correct radial location.
Movement positionActual die and upper haul off position, not one assumed angle.
Direction and zeroKnown direction, reference position and movement range.
Line speed and distanceTransport time from the bubble to the online profile measurement.
Scanner coordinateProfile direction, starting point and relationship to the flattened web.
One-degree mapping does not mean one vane per degree. Mapping resolution and physical radial vane count are different parts of the control architecture.
Let operators verify the process before EGC acts on it
The value of automatic correction depends on an understandable workflow. Operators first stabilize the line and validate the profile, then enable correction when the measurement and movement signals are trustworthy.
OffsheetKeep automatic correction inactive while the line is down, changing or unstable.
Profile OnlyMeasure the process and confirm that consecutive profiles are stable enough to act on.
AutomaticBegin mapped correction after the profile, line and position signals are valid.
RecoverUse alarms, trends, manual adjustment and a uniform correction profile to return to a known state.
Quoted controls vary: recipes, history, alarms, diagnostics, remote support readiness and coordinated Addex modules follow the installed Gen3 scope and plant network policy.
Addex-published application example
A difficult line returned to production with lower reported scrap
Addex reports that a Crayex line had lost operator confidence and certain products were difficult to schedule. After the EGC installation and learning period, the customer reported substantially lower scrap and wanted the technology considered for additional lines.
18 to 22%Customer-reported scrap before installation
15%Reported during the initial learning period
6%Later customer-reported scrap level
Application specific: this is an Addex-published customer result, not a typical outcome or universal guarantee. Current EGC sizing follows the latest factory guide, not the legacy vane count in the older story.
Retrofit an existing line or specify a new project
Define the complete gauge control loop before ordering hardware
The useful scope includes the air ring, airflow, profile measurement, movement signals, controls, commissioning and acceptance method. Retained equipment is reviewed, not assumed.
Modernize the verified constraint
Document the installed air ring, plenum, profiler, movement hardware, controls and profile loss before deciding what can remain.
- Model, serial number, controls generation and drawings
- Air ring, lip set, plenum, blower and duct condition
- Scanner, profile format, line speed and transport distance
- Die and haul off motion signals, zero and direction
Protect interfaces before layout freezes
Coordinate mechanical, airflow, electrical and measurement responsibilities early enough to avoid a controls package built around missing signals.
- Confirm die size, product range and current vane guide
- Assign blower, ducting and single-inlet plenum scope
- Define profiler, encoder, I/O and interlocks
- Agree on commissioning products and acceptance evidence
Die and movement
Die diameter, lip set, BUR, frost line, cage, tower, scanner location and every rotating or oscillating component.
Normal and difficult film
Resin, structure, thickness, output, width, properties, current profiles and the products that justify correction.
Ring, blower and ducts
Installed hardware, nameplates, curves, filters, duct sizes, inlet arrangement, photographs and maintenance condition.
Profiles and losses
Consecutive stable profiles, scrap, overbuild, intervention frequency, movement trends and the target business result.
Project boundary: equipment, retained components, compatibility, drawings, performance, installation, commissioning, training, acceptance, service and responsibilities follow the written Addex quotation.
Correct the verified profile around the real line
Request an Addex MGC or EGC application review
Send the die, air ring and airflow equipment, consecutive profiles, online measurement, line movement, product range, current losses and the result the plant needs to improve. Gauge Advisor will organize the application for Addex review and quotation.
Final scope boundary: selected equipment, compatibility, drawings, performance, controls, installation, commissioning, service and responsibilities follow the written Addex quotation and approved project documents.
Blown film gauge control FAQ
Questions before selecting MGC or EGC
What is the difference between Addex MGC and EGC?
MGC gives operators localized manual airflow adjustments around a suitable Addex air ring. EGC uses a compatible online total film profile, mapping logic and two stepper motor assemblies to change localized external cooling automatically. Both target repeatable circumferential gauge profile variation, but the operating method and required controls are different.
Does EGC require an online thickness profile?
Yes. Automatic EGC needs a valid online total film profile with known direction, angular relationship, transport delay and line state. The scanner, sensing physics, profile format and controls interface must be reviewed as part of the project.
Can EGC correct one coextruded layer?
Not independently when the feedback signal is total film thickness. EGC acts on localized external cooling using the total film profile. A defect isolated to one layer requires separate layer and process diagnosis.
Can EGC work with a rotating die or oscillating haul off?
Current Gen3 EGC can be reviewed for moving-line applications when the required position, direction, zero, speed, transport and scanner-coordinate signals are available. Die and upper haul off movement must be modeled separately.
Does one-degree mapping mean one physical vane per degree?
No. One-degree mapping describes coordinate resolution for reviewed moving-line applications. The current physical EGC architecture uses 100 to 364 radial vanes depending on die size. Mapping resolution and vane count are separate specifications.
What is the current Addex EGC size range?
The current factory planning guide covers 6 through 48 inch dies, approximately 150 through 1220 millimeters, with 100 through 364 radial vanes. Round up when the die falls between listed sizes. Final configuration follows Addex application review and the written quotation.
What changed in the current EGC design?
The redesigned EGC is optimized for manufacturability from higher-quality plate material, uses the current radial vane guide and moves new-build projects to job-specific single-inlet plenums in 2-inch diameter increments. The plate statement describes manufacturing direction, not a universal film-performance improvement.
Is EGC the same as an air ring, DIBC or BIDS?
No. The air ring provides external cooling. EGC adds mapped localized gauge profile correction. DIBC controls active internal supply and exhaust airflow on an IBC line. BIDS inflates or deflates retained bubble air on a compatible non IBC line. These layers may coordinate through Gen3 but solve different physical problems.
Does Addex guarantee one universal profile reduction?
No universal percentage or finished-film tolerance should be assumed. Results depend on the profile source, process stability, measurement, mapping, airflow authority, product, line movement and written project scope. Application-specific published examples are evidence, not typical guarantees.
What should a plant send for an EGC retrofit review?
Send the model and serial number, controls generation, die and air ring drawings, blower and duct data, current profiler, consecutive stable profiles, line speed and transport distance, die and haul off movement signals, product range, photographs and the verified production loss.
What does Gauge Advisor do on an Addex gauge control project?
Gauge Advisor provides authorized Addex sales and applications support by defining the problem, collecting line and product data, organizing the preliminary architecture, coordinating factory review and supporting the commercial quotation. Final configuration, performance terms and factory technical determinations belong to Addex and the written project scope.