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Send EmailDigital textile printing is a process where inkjet technology is used to print designs directly onto fabric. Unlike traditional screen printing, it requires no screens, has minimal setup time, and offers high flexibility for short runs and rapid design changes.
The five main types of digital printing inks are:
Pigment Inks
Reactive Inks
Acid Inks
Disperse Inks (Direct)
Sublimation Inks (Transfer)
Each type is formulated for specific fiber types and has distinct properties, application methods, and fastness characteristics.
Definition: Pigment inks contain insoluble colored particles suspended in a liquid vehicle. They are fixed onto the fabric surface using a binder (resin) that forms a transparent film, encapsulating the pigment.
Fiber Compatibility:
✅ All fiber types (cotton, polyester, blends, silk, wool, nylon)
✅ Most universal ink type
Key Properties:
| Property | Description |
|---|---|
| Pre-treatment required? | Yes (often requires a pre-treatment pad or spray) |
| Post-treatment required? | Yes (heat curing to fix binder) |
| Washing off required? | No (no unfixed dye to wash out) |
| Hand feel | Can be stiff (depends on binder) |
| Wash fastness | Moderate to good |
| Light fastness | Good to very good |
Advantages:
Suitable for all fibers (universal)
Simple process (no steaming, no washing off)
Low water and energy consumption
No wastewater
Disadvantages:
Stiffer hand feel compared to dye-based inks
Lower crocking (rubbing) fastness
Requires heat curing
Applications:
Fashion apparel (all fiber types)
Home textiles (curtains, upholstery)
T-shirts and garments (direct-to-garment - DTG)
Prototyping and sampling
Definition: Reactive inks contain water-soluble reactive dyes that form covalent chemical bonds with cellulosic fibers. This chemical reaction results in very high wash fastness.
Fiber Compatibility:
✅ Cotton, viscose, linen, hemp, bamboo
✅ Other cellulosic fibers
Key Properties:
| Property | Description |
|---|---|
| Pre-treatment required? | Yes (sodium alginate, alkali, urea) |
| Post-treatment required? | Yes (steaming + washing off) |
| Washing off required? | Yes (essential to remove unfixed dye) |
| Hand feel | Excellent (soft, natural) |
| Wash fastness | Very high (4-5) |
| Light fastness | High (5-6) |
Advantages:
Excellent wash and light fastness
Very soft hand feel (dye penetrates fibers)
Bright, vibrant colors
Wide color gamut
Disadvantages:
Requires pre-treatment and post-treatment (steaming + washing)
High water consumption (due to washing off)
Higher wastewater treatment needs
Applications:
High-quality cotton apparel (shirts, dresses, blouses)
Home textiles (bed sheets, towels)
Children's clothing
Viscose and modal garments
Definition: Acid inks contain acid dyes that form ionic bonds with protein and polyamide fibers under acidic conditions (pH 2-4).
Fiber Compatibility:
✅ Wool, silk, cashmere, alpaca (protein fibers)
✅ Nylon (polyamide)
✅ Leather (sometimes)
Key Properties:
| Property | Description |
|---|---|
| Pre-treatment required? | Yes (acetic acid, wetting agents) |
| Post-treatment required? | Yes (steaming + washing off) |
| Washing off required? | Yes (to remove unfixed dye) |
| Hand feel | Excellent (soft, natural) |
| Wash fastness | Good to very good (depends on dye) |
| Light fastness | Moderate to good |
Advantages:
Very bright, vivid colors (especially on silk and nylon)
Good wet fastness (with proper fixation)
Excellent penetration and leveling
Disadvantages:
Requires acidic pH control
Requires steaming and washing off
Lower light fastness compared to reactive dyes
Applications:
Silk garments (scarves, dresses, ties)
Wool apparel (sweaters, suits)
Nylon sportswear (swimwear, activewear, hosiery)
Leather goods
Definition: Disperse inks contain finely dispersed, water-insoluble dyes that sublimate or diffuse into synthetic fibers at high temperatures. This "direct" method prints disperse ink directly onto the fabric, followed by high-temperature fixation.
Fiber Compatibility:
✅ Polyester
✅ Polyester blends (with cotton, elastane, etc.)
✅ Nylon (limited)
Key Properties:
| Property | Description |
|---|---|
| Pre-treatment required? | Sometimes (for better penetration) |
| Post-treatment required? | Yes (high-temperature heat fixation + washing) |
| Washing off required? | Yes (to remove surface dye) |
| Hand feel | Good to soft |
| Wash fastness | Good to very good |
| Light fastness | Good to very good |
Advantages:
Good color yield on polyester
Good fastness properties
Disadvantages:
Requires high-temperature fixation (180-200°C)
Requires washing off (reduction clearing recommended)
Not suitable for natural fibers
Applications:
Polyester sportswear (jerseys, leggings, shorts)
Polyester home textiles (curtains, upholstery)
Swimwear and activewear
Polyester blends
Definition: Sublimation inks contain disperse dyes that sublimate (transition directly from solid to gas) when heated. The gaseous dye penetrates and dyes synthetic fibers. This is usually a two-step transfer process: ink is printed onto transfer paper, then heat-transferred to fabric.
Key distinction: Unlike direct disperse printing, sublimation printing uses transfer paper. The ink never directly contacts the fabric until the heat press step.
Fiber Compatibility:
✅ Polyester (high content, >70% recommended)
✅ Polyester-coated items (mugs, phone cases, metal, ceramic)
❌ Cotton, silk, wool, nylon (unless specially coated)
Key Properties:
| Property | Description |
|---|---|
| Pre-treatment required? | No (for fabric; paper is used instead) |
| Post-treatment required? | No (fixation happens during transfer) |
| Washing off required? | No (no unfixed residue on fabric) |
| Hand feel | Excellent (dye is inside fiber, no surface film) |
| Wash fastness | Good to very good |
| Light fastness | Good to very good |
Advantages:
No pre- or post-treatment needed (for fabric)
No washing off → zero water consumption
Soft hand feel (dye inside fiber)
Excellent color brightness and sharpness
Simple process (print on paper → press on fabric)
Disadvantages:
Only works on polyester (or polyester-coated items)
Limited to light-colored or white polyester fabrics
Requires transfer paper (additional consumable)
Not suitable for cotton or natural fibers
Applications:
Polyester sportswear (jerseys, cycling wear, yoga wear)
Fashion (polyester dresses, scarves)
Home textiles (polyester curtains, flags, banners)
Promotional products (mugs, mouse pads, phone cases)
Soft signage (banners, trade show displays)
| Feature | Pigment | Reactive | Acid | Disperse (Direct) | Sublimation |
|---|---|---|---|---|---|
| Main Fiber | All fibers | Cotton, viscose | Wool, silk, nylon | Polyester | Polyester |
| Natural Fibers | ✅ | ✅ (cellulosic) | ✅ (protein) | ❌ | ❌ |
| Synthetic Fibers | ✅ | ❌ | ✅ (nylon) | ✅ (polyester) | ✅ (polyester) |
| Pre-treatment | Required | Required | Required | Sometimes | Not required |
| Steaming | Not required | Required | Required | Required (or HT) | Not required |
| Washing Off | Not required | Required | Required | Required | Not required |
| Heat Curing | Required (150-170°C) | Not required | Not required | Required (180-200°C) | Required (transfer) |
| Water Consumption | Low | High | High | Medium | Zero |
| Hand Feel | Moderate (can be stiff) | Excellent (soft) | Excellent (soft) | Good | Excellent |
| Wash Fastness | Moderate–Good | Very high | Good–Very Good | Good–Very Good | Good–Very Good |
| Color Brightness | Moderate | Very high | Very high | High | Very high |
| Cost per meter | Low–Medium | Medium–High | Medium–High | Medium | Low–Medium |
| Eco-Friendliness | High (no wash-off) | Low (high water use) | Low (high water use) | Medium | Very high (zero water) |
| Chemical | Amount (g/L) |
|---|---|
| Sodium Alginate (thickener) | 10-20 |
| Sodium Bicarbonate (alkali) | 20-40 |
| Urea (humectant) | 100-150 |
| Wetting agent | 1-3 |
| Chemical | Amount (g/L) |
|---|---|
| Sodium Alginate or thickener | 10-20 |
| Ammonium sulfate (fixation aid) | 20-40 |
| Acetic acid (pH adjustment to 4-5) | 5-10 |
| Wetting agent | 1-3 |
| Chemical | Amount (g/L) |
|---|---|
| Cationic pre-treatment agent | 20-50 |
| Thickener (if padded) | 5-10 |
| Wetting agent | 1-2 |
| If you need to print on... | Use this ink type |
|---|---|
| Cotton, viscose, linen (high quality, high wash fastness) | Reactive |
| Cotton (fast, simple, lower cost) | Pigment |
| Polyester (high volume, any color fabric) | Disperse (Direct) |
| Polyester (low volume, white/light fabric only, zero water) | Sublimation |
| Wool, silk, nylon, leather | Acid |
| Mixed fibers or unknown fiber type | Pigment |
| Promotional items (mugs, phone cases) | Sublimation |
Sublimation vs. Direct Disperse: Sublimation requires transfer paper and works only on white/light polyester. Direct disperse prints directly onto the fabric and works on dark polyester but requires washing off.
Fiber Blends: For cotton-polyester blends, pigment inks are the simplest solution. Reactive/disperse combination printing is possible but complex.
Eco-Preferences: Pigment and sublimation inks have the lowest environmental impact (no washing off, low water consumption). Reactive and acid inks require significant water for post-treatment.
Fastness Requirements: For high wash fastness (e.g., workwear, children's clothing, sportswear), reactive or disperse inks are preferred over pigment inks.