Printing on Specialty Substrates Workflow

Porous Substrates (Wood, Leather, Unglazed Ceramic)

• Absorb liquid inks quickly
• Require: Pre-treatment or sizing to control ink absorption
• Best inks: Water-based or dye-based (natural affinity for fiber)
• Curing: Air dry or low heat (if any)

Non-Porous Substrates (Metal, Glass, Glazed Ceramic, Plastic)

• Inks sit on surface; don't absorb
• Require: UV-curable inks or adhesion promoters
• Best inks: UV DTF, UV-curable plastisol, or specialized coatings
• Curing: UV light (20–45 seconds) or heat press (300–400°F)

Semi-Porous Substrates (Acrylic, Coated Wood, Laminate)

• Ink absorption varies by coating
• Require: Primers or adhesion sprays for maximum durability
• Best inks: Hybrid (UV + heat); UV DTF works best
• Curing: Combination UV + heat press for durability

Flexible Substrates (Leather, Textile Blends)

• Must flex without cracking or peeling
• Require: Flexible inks and proper underbase
• Best inks: Water-based screen print inks, flexible plastisol
• Curing: Low to medium heat; too high causes ink brittleness

Wood

• Sanding: 150–220 grit to open grain and improve adhesion
• Sizing: Apply wood sealer or inkjet pre-coat to prevent blotchy ink absorption
• Moisture: Acclimate wood 24–48 hours before printing (prevents warping after print)
• Best printing method: UV DTF or sublimation (if coated)

Acrylic

• Cleaning: Wipe with isopropyl alcohol to remove dust and oils
• Adhesion promoter: Optional but recommended for UV inks (improves durability)
• Coating: Check if surface is glossy or matte; glossy requires less prep
• Best printing method: UV DTF, UV-curable inks, or heat-transfer vinyl

Metal

• Cleaning: Remove grease with degreaser; light sandpaper roughens surface
• Primer: White metal requires primer or white base coat for color accuracy
• Oxidation: Bare aluminum oxidizes; use anodized or powder-coated metals when possible
• Best printing method: UV DTF (fastest), sublimation on coated metals

Glass and Glazed Ceramic

• Cleaning: Thorough degreasing and drying essential
• Surface texture: Smooth glass is challenging (poor ink adhesion). Frosted or textured surfaces work better.
• Primer: Not needed but adhesion spray improves durability
• Best printing method: UV DTF (cures instantly), specialty ceramic inks

Leather

• Testing: Always test on scrap leather first (vegetable-tanned vs. chrome-tanned absorb differently)
• Prep: Clean with leather cleaner; no sanding needed
• Inks: Water-based dyes or flexible screen print inks only (plastisol will crack on flex)
• Curing: Air dry or low heat (140°F max); high heat hardens leather

UV DTF (Best for Hard Surfaces)

• Works on wood, acrylic, metal, glass, ceramic
• Cures in 20–45 seconds with UV light
• Excellent durability for outdoor applications
• Can apply immediately after cure (no cooling time)

Sublimation (Best for Coated Surfaces)

• Requires polyester or polymer coating (cannot use bare wood/metal)
• Dye bonds with coating molecules; highly durable
• No ink layer on surface (feels smooth)
• Heat press required: 350–400°F, 45–60 seconds

Screen Printing (Traditional, Versatile)

• Works on almost any surface (wood, metal, glass, ceramic)
• Requires manual or automated press
• Specialty inks available for each material
• Slower than UV DTF but often more cost-effective at high volume

UV-Curable Plastisol (Hard Surface Alternative)

• Similar to UV DTF but thicker ink layer
• Better coverage of surface texture and imperfections
• Requires UV curing after print
• More expensive than standard plastisol

Wood Printing (UV DTF Method)

1. Sand wood (150–220 grit) to open grain
2. Wipe with damp cloth; air dry
3. Apply wood sealer or inkjet pre-coat if needed
4. Print design to UV DTF film
5. UV cure film (20–45 seconds)
6. Apply film to wood with heat press (350–375°F, 30–45 seconds) or transfer tape
7. Remove carrier film
8. Optional: topcoat with polyurethane for weather resistance

Acrylic Printing (UV DTF or Heat Press)

1. Clean with isopropyl alcohol; air dry
2. Print design to UV DTF film
3. UV cure (20–45 seconds)
4. Heat press to acrylic (375–400°F, 30–45 seconds)
5. Remove carrier film
6. Test adhesion; topcoat if necessary

Metal Printing (UV DTF)

1. Degrease metal with cleaner
2. Light sand (optional, improves adhesion)
3. Wipe clean
4. Print design to UV DTF film
5. UV cure (20–45 seconds)
6. Apply to metal via heat gun (350°F, 60 seconds) or heat press if flat
7. Let set 5 minutes; remove carrier film

Leather Printing (Screen Print with Water-Based Ink)

1. Clean leather with leather cleaner
2. Mount screen; adjust squeegee
3. Print design (water-based ink only—plastisol will crack)
4. Flash cure 20–30 seconds between layers if multi-color
5. Air dry or cure at 140°F for 2–3 minutes
6. Flex leather gently after curing to ensure ink flexibility

Ink Not Adhering to Metal/Glass: Surface oily or dusty. Degrease thoroughly and dry before printing.

Ink Cracking on Leather: Using plastisol or rigid ink. Switch to water-based or flexible plastisol; cure at lower temperature.

UV Cure Too Fast (Bubbling): Film pulled out too early from curing station. Allow full exposure time.

Dull or Washed-Out Colors on Wood: Wood sealer over-applied. Use thinner coat; too much sealer blocks ink brilliance.

Print Peeling After Heat Press: Adhesion spray not used on smooth acrylic/metal. Reprint with primer or transfer tape.