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Technical and Customization Options for Duplex Business Cards
Specification	Available Options
Quantity per set	250, 500, 1000
Thickness	26 PT
Print Size	3.5" x 2", 3.5" x 1.75", 2" x 2"
Card Stock	Duplex Black/White, Custom Duplex Colors
Die Cut	None, Simple Shape, Complex Shape
Thermography	None, 1 Sided Thermography
Edge Paint	None, Edge Paint

Compliance & Technical Standards for Duplex Business Cards

Material & Process Compliance

Substrate: Multi-layer construction of premium uncoated or silk-coated cardstocks ranging from 32 pt to 48 pt total thickness. Duplex cards use two laminated sheets; triplex cards include a colored core layer between face stocks. All papers FSC-certified and compliant with ISO 536 (grammage) and ISO 2471 (opacity) standards.
Printing Method: CMYK offset or digital press, with optional spot color or white ink. Raised foil variants produced using UV spot gloss underlay with heat-applied metallic foil layer per ISO 12647-2 color reproduction standards.
Lamination Process: Layers bonded using pH-neutral, solvent-free adhesives meeting ASTM D6862 (peel resistance) and ASTM D2564 (adhesive performance) standards. Alignment tolerance maintained across layers to ±0.25 mm.
Foil & Raised Effects: Hot or cold foil stamped onto UV polymer raised base; metallic finishes available in gold, silver, rose gold, red, blue, and holographic variants. Foil materials RoHS-compliant and recyclable under PET separation process.
Compliance: Produced under ISO 14001 certified manufacturing systems using low-VOC coatings and environmentally responsible adhesives.

Dimensional & Build Standards

Attribute	Nominal	Tolerance	Notes
Card Size	3.5″ × 2″ (U.S. Standard)	±0.5 mm	Alternate formats available on request
Total Thickness	32 pt – 48 pt	±5 %	Dependent on paper combination and adhesive bond thickness
Layer Alignment	±0.25 mm	—	Registered across full card area during lamination
Foil Application Height	0.05–0.15 mm	±0.02 mm	Measured from base substrate on raised foil models
Edge Core Centering	±0.25 mm	—	For triplex cards; color core alignment tolerance

Environmental & Safety Disclosures

Material Safety: Papers, foils, and adhesives are free of PVC, phthalates, and heavy metals; meet ASTM D4236 labeling requirements.
Recyclability: Duplex and triplex cards recyclable under mixed paper stream. Foil layers recoverable via delamination in specialized recycling systems.
Ink & Coating: UV coatings and polymer raised finishes low-VOC per ASTM D3960; foil adhesives REACH-compliant.
Storage: Store between 18–25 °C and 35–55 % RH. Avoid direct sunlight to prevent foil oxidation or adhesive distortion.

Quality Assurance & Color Management

Color Accuracy: ICC profile management for both coated and uncoated face stocks. ΔE2000 color variance maintained ≤3 across print runs.
Foil Registration: Checked per 25-unit interval for positional accuracy; tolerance ±0.25 mm.
Lamination Bond Test: Random samples undergo peel strength verification ≥2.5 N/cm under ASTM D1876.
Surface Inspection: Each batch verified for foil adhesion, raised finish height, and edge cleanliness.
Core Alignment: For triplex variants, color core centered via laser alignment calibration before pressing.

File Preparation Alignment

Bleed: 3 mm (0.125″) bleed; maintain a 3 mm safe area inside trim.
Resolution: Minimum 300 dpi at full size; 600 dpi recommended for foil mask precision.
Color Mode: CMYK only; provide foil mask layer as a 100% K vector layer named Foil.
Raised Foil Areas: Avoid thin serif typefaces under 0.5 pt stroke width; maintain minimum 1 mm spacing between adjacent foil zones.
Fonts & Lines: Convert to outlines; ensure vector artwork alignment across print and foil layers.

Legal & Marking

All design elements, trademarks, and printed material are reproduced under client license. Batch numbers and lamination identifiers are tracked internally for process validation and do not appear on final products. Manufacturing conforms to ASTM D685 (paper durability), ISO 9706 (archival permanence), and ASTM D6862 (bond adhesion) standards.

Duplex Business Cards FAQs

What does “duplex” mean for these cards and how thick are they?

Duplex means two premium sheets are bonded together to create a rigid 26 pt card. You can choose Black/White or request Custom Duplex Colors for different paper colors front and back.

What sizes are available and how should I set up my file?

Sizes: 3.5" x 2" (standard), 3.5" x 1.75" (slim), and 2" x 2" (square). Add 0.125" bleed on all sides and keep critical text at least 0.125" inside the trim.

Can you print on dark or colored duplex stocks?

Yes. We offer Duplex Black/White and Custom Duplex Colors. For dark stocks, use high-contrast designs; light inks may appear muted. For full-color work, place it on the lighter side.

How does die cutting work and what counts as a simple vs. complex shape?

Choose Simple Shape for basic rounded/straight shapes; choose Complex Shape for intricate curves, fine details, or internal cutouts. Supply a vector dieline on its own layer at final size.

Is thermography (raised ink) available on both sides?

Thermography is offered on 1 side only. It adds a raised, tactile finish ideal for names or logos; avoid large flood areas for best results.

Do you offer edge painting and are there any limitations?

Yes, edge painting is available on the 26 pt stock. Solid, opaque colors work best; gradients/metallic fades aren’t possible. Minor shade variation across the stack is normal.

What file specs should I use for upload (front and back)?

Provide print-ready PDFs (preferred) or high-res files: CMYK color, 300 dpi, fonts outlined, with bleed included. Place dielines/thermography as spot-color or clearly labeled separate layers.