How to Scale Digital Textile Pretreatment from a Lab Trial to a Production Stenter or Padding Line

Scaling digital textile pretreatment from a laboratory trial to a production padding line or stenter is not a matter of copying the laboratory bath recipe, padder pressure, oven temperature and drying time. Laboratory equipment and production machines create different wet pick-up, shear history, fabric tension, airflow, heat transfer, moisture removal and widthwise uniformity. A successful scale-up preserves the fabric result rather than the machine setting: controlled chemical add-on, uniform application, defined residual moisture, stable ink spreading, adequate fixation and consistent post-wash color. The practical scale-up method is to freeze the chemistry first, measure the real production wet pick-up or coating add-on, adjust bath concentration only when necessary to preserve the target dry add-on, then rebuild the drying and stenter window around the production fabric speed, airflow and moisture profile.

How Should Digital Textile Pretreatment Be Scaled from Lab to Production?

The safest method is to scale the fabric condition and final printing result, not the laboratory machine settings.

Практичний алгоритм дій такий:

Freeze Formula → Measure Lab Wet Pick-Up / Add-On → Define Target Dry Add-On → Run Production Application → Measure Actual Production Pick-Up → Adjust Bath Concentration if Needed → Build Stenter Drying Window → Measure Residual Moisture → Print → Steam / Fix → Wash → Compare Final Result

The production trial should reproduce the laboratory targets that actually matter:

• Chemical add-on
• Application uniformity
• Residual moisture
• Ink spreading / penetration
• Post-wash color
• Fixation / fastness
• Тканина ручної роботи

Do not assume that the same padder pressure, oven temperature or drying time will create the same fabric on full-scale equipment.

Why a Successful Lab Trial Can Fail on the Production Line

Laboratory and production systems differ in several ways simultaneously.

Scale-Up Variable	Laboratory	Виробництво
Fabric width	Narrow sample	Full working width
Wet pick-up	Small padder / hand application	Production nip / coating / spray system
Bath volume	Small, quickly mixed	Large tank with circulation and longer holding
Сушіння	Static / small oven	Moving web in multi-zone stenter
Airflow	Limited geometry	High-volume impingement across width
Fabric tension	Often low / manual	Controlled but continuous tension
Process time	Discrete samples	Start-up, steady state and end-of-run drift

Any one of these differences can change pretreatment distribution.

Scale-up failure therefore does not automatically mean the laboratory formulation was wrong.

Scale the Fabric Result, Not the Machine Setting

A laboratory trial may use one specific:

• Padder pressure
• Wet pick-up
• Oven temperature
• Drying time

Those settings describe the lab machine.

What should be transferred to production is:

• Actual wet pick-up
• Target dry active add-on
• Residual moisture condition
• Print-quality response

This distinction is essential.

Equivalent Machine Number ≠ Equivalent Fabric Condition.

A production stenter has different airflow, heat transfer and moving-web dynamics from a laboratory oven, so temperature and time should be rebuilt from the target fabric result.

Freeze the Chemistry Before Scaling the Mechanics

The first production trial should not simultaneously change:

• Pretreatment grade
• Polymer dosage
• Alkali
• Urea / moisture-management chemistry
• Wet pick-up
• Dryer settings

Freeze the lab-approved chemistry first.

Then adjust production mechanics to reproduce the lab fabric condition as closely as practical.

If chemistry and machine variables are changed together, the cause of any production difference becomes difficult to identify.

Use the Same or Equivalent Production Fabric

A scale-up trial is only meaningful if the fabric is representative.

Запис:

• Fiber composition
• Knit / woven construction
• GSM
• Width
• Scouring / mercerization
• Finishing history
• Incoming moisture
• Absorbency

A laboratory result on mercerized woven cotton should not be treated as a direct production specification for high-absorbency viscose knit.

Fabric variation can change wet pick-up, drying and ink penetration even when the pretreatment formula is identical.

Control Water Quality Before Comparing Scale

Laboratories often use deionized or softened water while the production plant may use treated municipal or well water.

This can change:

• Polymer hydration
• В’язкість
• Gel / residue formation
• Alkali chemistry

Before the production trial, record:

• Total hardness
• Conductivity
• pH
• Water-treatment route

If lab and plant water differ significantly, prepare a lab comparison with the real plant water before blaming production equipment.

Scale Pretreatment Mixing and Hydration Correctly

A small laboratory beaker and a production tank do not create the same mixing history.

Production scale can change:

• Powder wet-out
• Vortex formation
• Local high concentration
• Час гідратації
• Air entrainment
• Піна

Keep the validated addition sequence unless a production-specific change is required.

Запис:

• Water temperature
• Mixer type / speed
• Addition order
• Час гідратації
• Final holding time before use

Do not compare production viscosity with the laboratory value before both products have reached equivalent hydration.

Control Bath Temperature and Viscosity

Pretreatment viscosity depends on temperature.

A bath prepared and measured in a cool laboratory can behave differently in a warm production tank or circulation loop.

For scale-up, standardize or record:

• Bath temperature
• Viscosity instrument
• Шпиндель / ротор
• Швидкість
• Час читання
• Sample conditioning

Same viscosity number measured under different conditions is not a valid scale comparison.

Confirm the Application Route Is Really the Same

Moving from a lab padder to a production padder is a scale-up.

Moving from a laboratory coating bar to a production padder is a route change.

Likewise:

• Lab padding → production spray
• Lab coating → production padding
• Lab spray → production coating

should not be treated as simple scale-up.

Different application routes change:

• Проникнення
• Surface localization
• Water load
• Drying response

If the route changes, requalify the process on a dry-add-on and final-print basis.

Laboratory Padding vs. Production Padding

Reactive inkjet studies often use small laboratory padders to reach a defined pickup before oven drying.

That proves the chemistry under the study conditions; it does not define the production padder settings.

Production padding adds:

• Full-width roll deflection
• Roll crown / hardness effects
• Continuous fabric tension
• Bath circulation
• Temperature drift
• Longer run time

The correct production target is actual measured wet pick-up and widthwise uniformity.

Do Not Scale by Nip Pressure Alone

Padding is defined by the fabric passing through a treatment bath and then through squeeze rolls that remove excess liquor.

The pressure setting is only an input.

Actual wet pick-up depends on:

• Nip load
• Roll hardness
• Roll crown / deflection
• Fabric thickness
• Поглинаюча здатність тканини
• Швидкість
• Bath rheology

Отже:

Lab Nip Pressure ≠ Production Nip Pressure Target.

Adjust the production padder until the measured fabric pick-up reaches the intended process window.

Match Actual Wet Pick-Up

Wet pick-up is calculated as:

Wet Pick-Up (%) = (Wet Fabric Mass − Dry Fabric Mass) ÷ Dry Fabric Mass × 100

Measure it immediately after application to minimize evaporation error.

For production trials, measure:

• Beginning of trial
• Steady state
• End of trial

and across the fabric width.

A production average that matches the lab value can still hide an unacceptable left-center-right difference.

Preserve the Target Dry Chemical Add-On

The lab-approved fabric performance is more directly connected to how much chemistry actually reaches the textile.

For a homogeneous bath on compatible mass bases:

Dry Add-On (%) ≈ Wet Pick-Up (%) × Active Bath Concentration (wt%) ÷ 100

This means that if production wet pick-up differs from laboratory wet pick-up, the bath concentration may need adjustment.

But do not change concentration before measuring the real production pick-up.

When Should Production Bath Concentration Be Adjusted?

If the same pretreatment product and solids basis are used, a useful first mass-balance relationship is:

C_production ≈ C_lab × WPU_lab ÷ WPU_production

where concentration and wet pick-up are expressed on compatible mass bases.

Example:

If the lab achieved the target result at:

• 80% wet pick-up
• 5% active bath concentration

and production delivers:

• 70% wet pick-up

then an initial theoretical concentration to preserve the same dry active add-on is approximately:

5 × 80 ÷ 70 ≈ 5.7%

This is a mass-balance starting point, not an automatic production recipe.

Higher concentration can change:

• В’язкість
• Wetting
• Polymer distribution
• Сушіння

so the adjusted condition must be retested.

Move from One Lab Sample to a Full-Width Production Profile

Laboratory samples are often too narrow to reveal cross-width problems.

Production should map at least several fixed positions such as:

Left → Left-Middle → Center → Right-Middle → Right

Useful measurements include:

• Wet pick-up
• Dry add-on where practical
• Residual moisture
• Post-wash K/S
• Bleeding / line width

Full-width uniformity is one of the most important scale-up acceptance criteria.

Fabric Tension, Width and Overfeed

Production fabric moves continuously under controlled mechanical conditions.

Tension can change:

• Fabric width
• Thickness
• Porosity
• Wet pick-up
• Сушіння

Stenter width and overfeed can also change final GSM and fabric geometry.

For knits especially, record:

• Entry width
• Stenter width
• Overfeed
• Fabric tension
• Final GSM

during the scale-up trial.

Bath Circulation, Foam and Concentration Drift

A lab bath may be used for minutes.

A production bath may circulate for hours.

During that time:

• Water can evaporate.
• Temperature can change.
• Foam can build.
• Polymer can experience continuous shear.
• Fabric carryout can change bath level / concentration.

Measure bath condition at:

• Start
• Steady production
• End

when scale-up consistency matters.

Laboratory Oven vs. Production Stenter

A laboratory oven usually treats a small, relatively static sample.

A production stenter moves a full-width web through multiple zones with high-velocity air impingement.

The two systems differ in:

• Air velocity
• Heat transfer coefficient
• Moisture removal
• Fabric tension
• Exhaust
• Temperature profile

Отже:

Lab Oven Temperature + Time Should Not Be Copied Directly as a Production Stenter Recipe.

Use them only as an initial severity reference.

Which Stenter Variables Must Be Recorded?

At minimum, record:

• Zone temperature settings
• Line speed
• Effective drying path / chamber configuration
• Airflow / fan settings where accessible
• Exhaust settings
• Fabric width
• Overfeed
• Tension
• Incoming wet pick-up
• Exit residual moisture
• Fabric exit temperature where useful

The final scale-up specification should connect these machine inputs to the actual fabric output.

Calculate Nominal Residence Time, but Do Not Treat It as Equivalent Drying

Where effective fabric path length is known:

Nominal Residence Time (min) = Effective Path Length (m) ÷ Line Speed (m/min)

This is useful for production comparison.

But two machines with the same nominal residence time can still dry differently because airflow, chamber temperature, humidity and fabric loading differ.

Use residence time as one process input—not as proof of equivalent heat / moisture history.

Airflow Uniformity Matters as Much as Temperature

Modern stenter research shows that uniform airflow across the textile is fundamental to uniform drying.

Poor airflow distribution can create:

• Widthwise moisture differences
• Different thermal history
• Different chemical migration

A production stenter can therefore show a correct average chamber temperature but still create an uneven pretreatment surface.

Inspect:

• Nozzles
• Fans
• Blocked flow paths
• Top / bottom balance

when scale-up produces widthwise variation.

Exhaust and Humidity Control

Drying requires removal of evaporated water vapor.

If exhaust is insufficient:

• Chamber humidity can rise.
• Drying rate can fall.
• Residual moisture can increase.

If drying is excessively aggressive:

• Surface layers can dry very rapidly.
• Chemical migration patterns can change.

Production drying should therefore balance:

Heat Input + Airflow + Exhaust + Residence Time.

Scale to Residual Moisture, Not Maximum Dryness

Reactive digital pretreatment does not require the driest possible fabric.

Residual moisture affects:

• Ink wetting
• Проникнення
• Polymer swelling
• Later steaming / fixation

After the first stenter trial, measure residual moisture and connect it to the print result.

Build a range:

• Lower acceptable condition
• Reference condition
• Upper acceptable condition

rather than optimizing only dryer temperature.

Calculate the Production Water Load

Wet pick-up determines the water entering the dryer.

For example, 1,000 kg of dry fabric at 80% wet pick-up carries approximately 800 kg of pretreatment liquor before drying.

The actual water portion depends on bath solids.

This water load influences:

• Dryer energy
• Line speed
• Exhaust demand

A production line that cannot remove the laboratory-equivalent water load at the intended speed may need:

• Lower wet pick-up
• Higher bath concentration at matched dry add-on
• More drying capacity

Any change must be revalidated for application uniformity and print quality.

Watch for Chemical Migration During Production Drying

As water moves and evaporates, dissolved or suspended pretreatment components can redistribute.

Production drying can create different migration from a laboratory oven because:

• Air velocity is higher.
• Fabric is moving.
• Drying is zoned.
• Widthwise airflow can vary.

Equal total dry add-on therefore does not guarantee equal surface distribution.

If production gives lower surface color despite matched add-on, investigate polymer / chemical distribution and penetration.

Start-Up Fabric Is Not Steady-State Fabric

At production start-up:

• Stenter temperature may still be stabilizing.
• Bath temperature may still be changing.
• Fabric tension / width may still be settling.
• Pick-up can drift.

Do not approve the entire process from the first meters alone.

Приклад:

• Start-up
• Steady state
• Later in the run

and separate warm-up material from steady-production qualification.

Use a Width × Length Sampling Grid

Roll Position	Left	Left-Middle	Center	Right-Middle	Right
Start / after stabilization	Приклад	Приклад	Приклад	Приклад	Приклад
Middle	Приклад	Приклад	Приклад	Приклад	Приклад
End	Приклад	Приклад	Приклад	Приклад	Приклад

Possible measurements include:

• Wet pick-up
• Residual moisture
• Post-wash K/S
• Line width / bleeding
• Проникнення

This grid reveals both widthwise and time-dependent scale-up instability.

Keep the Printing Conditions Fixed During Scale-Up

When evaluating pretreatment scale-up, keep the printer side constant first.

Freeze:

• Ink batch
• Printer / printhead
• Resolution
• Pass mode
• Total ink load
• Test image

Use a diagnostic pattern containing:

• Fine lines
• Small text
• Gradients
• High-ink-load blocks

This makes pretreatment differences easier to identify.

Keep Steaming and Wash-Off Standardized First

During the first production pretreatment comparison, keep downstream fixation and washing fixed.

If color changes after scale-up, first determine whether the pretreatment fabric entering the printer is equivalent.

Only after the best production pretreatment condition is identified should the steaming window be re-optimized if needed.

This prevents:

Pretreatment Change + Stenter Change + Steaming Change

from occurring in the same experiment.

Separate Color Yield from Fixation

A production fabric can appear darker because more dye remains near the surface but still have different fixation.

Порівняйте:

• Post-wash K/S
• Wash-off dye loss where measured
• Стійкість
• Проникнення

rather than approving scale-up from the unwashed print.

Color localization and chemical fixation are related but not identical outputs.

Cotton Scale-Up

Cotton can vary significantly by:

• Scouring
• Mercerization
• Construction
• GSM

Production cotton may therefore show a different wet pick-up from the lab fabric.

Match:

• Actual pick-up
• Dry add-on
• Residual moisture

before adjusting the chemistry.

Viscose / Modal Scale-Up

Viscose and modal often absorb more water than cotton.

At production scale, this can increase:

• Wet pick-up
• Drying load
• Moisture variation

A production stenter speed proven on cotton may therefore be unsuitable for a high-absorbency viscose fabric at the same bath recipe.

Rebuild the scale-up window on the actual viscose substrate.

Lyocell Scale-Up

Lyocell should be qualified independently.

Its moisture behavior, finishing history and fabric structure can change:

• Pick-up
• Сушіння
• Ink penetration

Do not copy the viscose production settings without validation.

Knit vs. Woven Scale-Up

Knits are often more sensitive to:

• Tension
• Width change
• Overfeed
• GSM change

These variables can change wet pick-up and drying.

Wovens are often dimensionally more stable, but full-width nip / airflow uniformity still matters.

Include mechanical fabric condition in the scale-up specification.

Recommended Four-Stage Scale-Up Plan

A controlled four-stage approach reduces production risk:

1. Laboratory screening
2. Production-matched laboratory confirmation
3. Short production trial
4. Full production confirmation

Each stage should answer a different question.

Stage 1 — Laboratory Screening

Goal:

Does the chemistry work?

Запис:

• Pretreatment formula
• Water quality
• В’язкість
• Application method
• Wet pick-up / add-on
• Сушіння
• Друк
• Fixation / wash-off

Select a robust formulation window rather than one fragile optimum.

Stage 2 — Production-Matched Lab Trial

Goal:

Can the lab mimic the expected production fabric condition?

Use:

• Plant water
• Production fabric
• Expected production pick-up
• Expected bath concentration

where practical.

This step separates chemistry-transfer issues from machine-scale issues before production time is used.

Stage 3 — Short Production Trial

Goal:

Can the machine reproduce the target fabric condition?

Start with a limited run and measure:

• Wet pick-up across width
• Bath stability
• Residual moisture across width
• Fabric width / GSM

Print representative samples before changing chemistry.

If dry add-on is incorrect because production pickup differs, then make one controlled concentration adjustment.

Stage 4 — Full Production Confirmation

Goal:

Is the process stable over time and normal production variation?

Confirm:

• Beginning / middle / end consistency
• Left-center-right consistency
• Batch preparation repeatability
• Dryer stability
• Printing / fixation repeatability

Only after this stage should the production process be considered locked.

Build a Production Acceptance Matrix

Control Area	Measured Variable	Acceptance Basis
Pretreatment bath	Concentration / solids / pH / viscosity	Validated lab + production window
Заявка	Wet pick-up / dry add-on	Target chemistry delivery
Width uniformity	Left-center-right profile	Print-quality tolerance
Сушіння	Residual moisture	Stable printing / fixation window
Друк	Bleeding / penetration / K/S	Approved reference
Final fabric	Fastness / hand / shade	Customer / mill specification

Do not invent one universal numerical tolerance for every mill.

Build limits from measurement repeatability, successful production and customer requirements.

Lock the Final Production Control Plan

Once the route is qualified, define which variables are:

Checked Every Batch

• Bath preparation
• pH / viscosity where relevant
• Джерело води

Checked Every Run

• Wet pick-up / add-on
• Line speed
• Dryer / stenter settings
• Residual moisture or approved proxy

Checked Periodically

• Widthwise profile
• Full printing test
• Стійкість
• Water hardness / conductivity

The control plan should be simple enough to use consistently.

Common Lab-to-Production Scale-Up Mistakes

1. Copying Lab Padder Pressure

Production rolls, width and fabric mechanics are different. Match measured pick-up instead.

2. Copying Lab Oven Temperature and Time

Stenter airflow and moving-web heat transfer are different. Match residual moisture and final print result.

3. Changing Chemistry Before Measuring Production Pick-Up

The machine may simply be applying a different amount of the same bath.

4. Matching Average Pick-Up but Ignoring Widthwise Variation

A correct average can hide edge-center differences.

5. Using Laboratory Water and Plant Water Interchangeably

Hardness and conductivity can change polymer behavior.

6. Approving Only Start-Up Fabric

The line may not yet be thermally or mechanically stable.

7. Changing Pretreatment and Steaming Together

The source of color / fixation changes becomes unclear.

8. Scaling One Exact Optimum Instead of a Working Window

Production needs tolerance to normal fabric and machine variation.

Таблиця усунення несправностей

Виявлена проблема	Перші змінні, які слід перевірити	Не робіть припущень
Production color weaker than lab	Actual pick-up, dry add-on, penetration, residual moisture	The product concentration must be increased immediately
Production pickup lower than lab	Nip, rolls, fabric absorbency, viscosity, speed	Copying lab pressure should give lab pickup
Same calculated add-on but different color	Chemical distribution, drying migration, penetration	Equal dry mass means equivalent fabric surface
Left-center-right shade variation	Widthwise pick-up, airflow, residual moisture	The inkjet printer is the first cause
Fabric exits stenter tacky	Water load, line speed, airflow, residual moisture	Higher chamber temperature alone is the solution
Lab cotton works but viscose fails	Pick-up, water load, drying, penetration	One cellulosic scale-up window fits all
Beginning of roll differs from middle	Warm-up, bath temperature, stenter stability	The product batch changed
Full production drifts over time	Bath concentration, evaporation, circulation, dryer loading	Short-trial approval guarantees long-run stability

Загальна вартість експлуатації

Scale-up affects more than pretreatment consumption.

A useful model is:

Total Cost in Use = Pretreatment + Application + Drying Energy + Line Capacity + Ink + Fixation + Washing + Rework + Quality Loss

A higher-pick-up production condition can:

• Increase dryer load
• Reduce stenter speed
• Increase migration risk

A lower-pick-up / higher-concentration route can reduce water load but may require:

• Different viscosity control
• Different wetting
• More precise chemical preparation

Compare cost per acceptable printed meter after the process is stable.

What Information Should You Send to a Supplier?

For useful lab-to-production scale-up support, provide:

• Fabric fiber / construction / GSM / width
• Lab pretreatment formula or current product / TDS
• Lab concentration / solids
• Lab viscosity method
• Lab wet pick-up / dry add-on
• Lab drying conditions
• Production application route
• Production padder / coating / spray details
• Production wet pick-up
• Production bath concentration
• Stenter zone temperatures
• Line speed / nominal residence time
• Airflow / exhaust settings where available
• Residual moisture
• Ink / printer
• Steaming / washing
• Exact difference between lab and production result

Компанія FSX Chemical може використовувати цю інформацію за допомогою Зразки та підбір to separate chemistry, application and drying scale-up effects.

Огляд Digital Textile Printing Pretreatment, Textile Printing Thickener Testing Parameters та Textile Printing Applications for related process control.

How Should a Mill Scale Digital Textile Pretreatment to Production?

The practical scale-up chain is:

Freeze Chemistry → Match Fabric → Match Water → Measure Production Pick-Up → Preserve Target Dry Add-On → Map Width Uniformity → Rebuild Stenter Drying Window → Measure Residual Moisture → Print / Fix / Wash → Confirm Long-Run Stability

Основними принципами є:

1. Scale the fabric result rather than copying laboratory machine settings.
2. Measure actual production wet pick-up before adjusting the pretreatment concentration.
3. Use dry chemical add-on as the mass-balance bridge between lab and production, while remembering that equal add-on does not guarantee equal chemical distribution.
4. Laboratory oven conditions should be translated into a production residual-moisture and print-performance window, not copied directly to the stenter.
5. Full-width and start-to-end sampling are essential because production introduces widthwise and time-dependent variation that small laboratory samples cannot reveal.
6. The successful scale-up is the widest stable process window that gives repeatable color, definition, fixation, hand and production cost—not the closest numerical copy of the laboratory settings.

Поширені запитання

1. Should I use the same padder pressure in production as in the laboratory?

No. Padder pressure is equipment-specific. Match actual wet pick-up and widthwise uniformity rather than copying the laboratory pressure setting.

2. Should I use the same stenter temperature as the laboratory oven?

Not automatically. Laboratory ovens and production stenters have different airflow, heat transfer and fabric movement. Build the production condition from residual moisture and final print results.

3. What is the most important number to transfer from lab to production?

There is no single number. Target dry chemical add-on, wet pick-up, residual moisture and final printing performance should be transferred together.

4. What if production wet pick-up is lower than the lab?

First confirm the measurement and machine condition. If lower pick-up is unavoidable, bath concentration can be adjusted theoretically to preserve dry add-on, then the new condition must be revalidated.

5. Can I calculate the required production concentration from lab pickup?

As a first mass-balance estimate, yes: Cproduction ≈ Clab × WPUlab ÷ WPUproduction, using compatible mass bases. It is a starting point, not a final recipe.

6. Why can equal dry add-on still produce a different production print?

Because water load, penetration, drying rate, chemical migration and surface distribution can differ even when total retained dry chemistry is similar.

7. Why is widthwise sampling necessary?

A laboratory sample cannot reveal full-width nip, airflow or moisture differences. Production quality can vary left-to-right even when the average value is correct.

8. Why should start-up fabric be separated from steady-state fabric?

Bath temperature, stenter conditions, fabric tension and width can still be stabilizing during start-up.

9. How do I calculate nominal stenter residence time?

Nominal residence time is effective fabric path length divided by line speed. It is useful for comparison but does not by itself define equivalent drying.

10. Should cotton, viscose and lyocell use the same production scale-up settings?

Not automatically. Their wet pick-up, swelling, water retention and drying behavior can differ substantially.

11. When should I change the pretreatment formula during scale-up?

Only after application, water quality, pick-up, drying and moisture differences have been measured. Change chemistry when the production mechanics cannot reproduce the required fabric result within a practical window.

12. What should I send FSX Chemical for scale-up troubleshooting?

Send the fabric, lab formula / TDS, lab pickup and drying data, production application equipment, production pickup, stenter temperatures / speed / moisture data, ink / fixation conditions and the exact lab-to-production difference.

Scale the Fabric Condition, Not the Laboratory Machine Number

If a digital textile pretreatment performs well in the laboratory but loses color, develops bleeding, dries differently or becomes uneven on the production padding / stenter line, FSX Chemical can help build a controlled lab-to-production scale-up comparison.

Почніть з Зразки та підбір and provide the laboratory wet pick-up, target dry add-on, production pick-up and stenter conditions.

Огляд Digital Textile Printing Pretreatment for the current FSX pretreatment routes📧 Електронна пошта: Service@fsxchemical.com

The most reliable production scale-up does not copy laboratory pressure, temperature and time. It reproduces the functional fabric condition: the correct chemistry add-on, uniform distribution, controlled residual moisture and stable digital-printing response across the full production width and run length.