Dye Sublimation Blockout Fabric Rolls
UNISIGN supplies printable polyester blockout fabric rolls for backdrops, frames, hanging banners and double-sided displays. The current range includes black-back, grey-back, white-back, silver-back and double-sided blockout structures from 150 to 310gsm, with selected widths up to 5.0m / 197 inches.
Start with three questions: How many sides must be printed? What backing color can be visible? How will opacity be tested?
Choose by structure | Compare products | Check print methods | Test opacity | Request samples
Blockout Fabric Quick Selection Guide
| If You Need | Start With | Current UNISIGN Options | Check First |
|---|---|---|---|
| One white print face with a dark reverse | Black-back or grey-back fabric | DSP-BLK-01, DSP-BLK-01F or DSP-BLK-02 | Backing color, opacity, scratch resistance and visible edges |
| One printed face with a white-looking reverse | White-back blockout | DSP-BLK-W | White point, weight, opacity and finishing |
| A light, backed flag or roll-up graphic | Silver-back fabric | DSP-BLK-03 | One- or two-side artwork, fold and edge test |
| Different graphics on both sides | Double-sided printable blockout | DSP-BLK-D or DSP-BLK-DTR | Front-to-back show-through, registration and two heat cycles |
| A large, seamless black-back backdrop | Extra-wide black-back fabric | DSP-BLK-01 | Current product page lists widths up to 5.0m / 197 in |
Short answer: Choose black, grey, white or silver backing when one main face is printed. Choose a double-sided blockout fabric when both white faces need separate graphics. Do not choose by GSM alone.
How Is Blockout Fabric Supplied?
What a roll buyer should confirm
- Roll length: 100m / 110 yd is currently listed for the models on this page.
- Maximum width: Most models are listed up to 3.2m / 126 in; DSP-BLK-01 is listed up to 5.0m / 197 in.
- Backing: Black, grey, white, silver or a dark inner layer.
- Print face: One main white face or two printable white faces.
- Packing: Confirm core size, roll diameter, protective wrapping and pallet needs in the quotation.
For approval: Request a labeled roll sample or cut sample from the same model, width and production plan.
What Is Printable Blockout Fabric?
Printable blockout fabric is an opaque display textile designed to reduce light transmission and background show-through behind a printed graphic. It is often made from polyester. The blocking function can come from a black or grey reverse, a white or silver backing, a coating, or a dark layer inside the fabric.
Blockout fabric is used when a wall color, frame, old graphic or rear light could affect the front image. It is a frontlit or opaque display material. It is not the same as a backlit lightbox fabric, which is designed to transmit and spread light.
Blockout, Blackout and Black Back: What Is the Difference?
| Term | Simple Meaning | Buyer Question |
|---|---|---|
| Blockout fabric | A display textile designed to stop light or show-through | What light-blocking result is required? |
| Blackout fabric | A common alternate spelling, also used for curtains and window textiles | Is the job a printed display or a window covering? |
| Black back fabric | A white printable face with a black reverse or coating | Can the reverse remain black and visible? |
| Double-sided blockout fabric | Two printable faces with a blocking structure between them | Do both sides need different graphics? |
| Opaque display fabric | A performance description, not one fixed construction | Which test method and pass level will be used? |
Need a clearer buying comparison? See blockout vs blackout vs blackback fabric to separate light blocking, backing colour and printable sides.
For a detailed look at one single-sided construction, see UNISIGN’s black back fabric guide. For a complete soft-signage overview, use the printable textile solutions center.
Choose Blockout Fabric by Structure
| Structure | Printable Sides | Best Starting Applications | Main Trade-Off |
|---|---|---|---|
| White face / black back | One main white face | Backdrop, frontlit frame, pop-up, exhibition wall | Black reverse and cut edges may be visible |
| White face / grey back | One main white face | Backdrop, frame and display system | Grey reverse must suit the hardware and finishing |
| White-back blockout | One main face; confirm exact printable side | Backdrops, frames and displays needing a lighter reverse | Higher weight and heat behavior must be tested |
| Silver-back blockout | Confirm artwork and model workflow | Double-side flags, roll-ups and booth graphics | Reflective backing appearance may affect the design |
| White face / dark core / white face | Two faces | Hanging banners, double-sided frames and directional displays | Two print passes require registration and heat-history control |
UNISIGN Blockout Fabric Product Range
Yes, a product list belongs on this commercial category page. Buyers can compare real models without opening seven tabs. Each card includes a current product image, the published GSM, print method, width and the best starting use.
Data note: The values below were checked against current individual UNISIGN product pages. An older summary table shows 260gsm for DSP-BLK-D and DSP-BLK-DTR, while the current individual pages list 250gsm and 270gsm. This page uses the individual product values. Always request the latest TDS and a labeled production sample before approval.
DSP-BLK-01 / Nox Black Back
- Weight: 260gsm / 7.6oz
- Print: Direct or paper-transfer dye sublimation
- Maximum width: 5.0m / 197 in
- Roll: 100m / 110 yd
- Published opacity wording: 100% obscuring rate
- Use: Backdrops, pop-ups, frames and exhibitions
DSP-BLK-01F Black Back
- Weight: 240gsm / 7.0oz
- Print: Direct or paper-transfer dye sublimation
- Maximum width: 3.2m / 126 in
- Roll: 100m / 110 yd
- Published opacity wording: 100% obscuring rate
- Use: Backdrops, pop-ups, frames and display systems
DSP-BLK-02 / Thor Grey Back
- Weight: 280gsm / 8.2oz
- Print: Direct or paper-transfer dye sublimation
- Maximum width: 3.2m / 126 in
- Roll: 100m / 110 yd
- Published opacity wording: 100% obscuring / perfect opacity
- Use: Backdrops, frames and exhibition displays
DSP-BLK-W / Hermes White Back
- Weight: 310gsm / 9oz
- Print: Direct or paper-transfer dye sublimation
- Maximum width: 3.2m / 126 in
- Roll: 100m / 110 yd
- Published opacity wording: 100% obscuring rate
- Use: Backdrops, frames and display systems
DSP-BLK-D / Ares Double-Sided
- Weight: 250gsm / 7.4oz
- Print: Direct or paper-transfer dye sublimation
- Maximum width: 3.2m / 126 in
- Roll: 100m / 110 yd
- Published opacity wording: Good opacity
- Use: Two-side backdrops, banners, frames and displays
DSP-BLK-DTR / Ares Plus
- Weight: 270gsm / 7.9oz
- Print: Direct or paper-transfer dye sublimation
- Maximum width: 3.2m / 126 in
- Roll: 100m / 110 yd
- Structure: Super-white faces with black inside
- Use: Frames, banners, pop-ups and blockout curtains
DSP-BLK-03 Silver Back
- Weight: 150gsm / 4.4oz
- Print: Direct or paper-transfer dye sublimation
- Maximum width: 3.2m / 126 in
- Roll: 100m / 110 yd
- Published opacity wording: Woven blockout
- Use: Double-side flags, roll-ups and trade-show booths
Need Help Choosing?
Send six facts:
- One-side or two-side print
- Direct or transfer sublimation
- Finished graphic size
- Required roll width and quantity
- Opacity test or target
- Required FR standard and destination
Complete Blockout Fabric Specification Table
| Model | Structure | Print Faces | Printing Listed | GSM | Max Width | Roll |
|---|---|---|---|---|---|---|
| DSP-BLK-01 | Black back | One main white face | Direct / transfer sublimation | 260 | 5.0m / 197 in | 100m / 110 yd |
| DSP-BLK-01F | Black back | One main white face | Direct / transfer sublimation | 240 | 3.2m / 126 in | 100m / 110 yd |
| DSP-BLK-02 | Grey back | One main white face | Direct / transfer sublimation | 280 | 3.2m / 126 in | 100m / 110 yd |
| DSP-BLK-W | White back | Confirm exact model side | Direct / transfer sublimation | 310 | 3.2m / 126 in | 100m / 110 yd |
| DSP-BLK-D | Dark inside / two white faces | Two | Direct / transfer sublimation | 250 | 3.2m / 126 in | 100m / 110 yd |
| DSP-BLK-DTR | Super white / black inside | Two | Direct / transfer sublimation | 270 | 3.2m / 126 in | 100m / 110 yd |
| DSP-BLK-03 | Silver back | Confirm artwork workflow | Direct / transfer sublimation | 150 | 3.2m / 126 in | 100m / 110 yd |
MOQ: MOQ depends on the model, width, stock and production plan. Send the exact model, width, roll quantity and destination for a current quotation.
Which Printing Methods Work With UNISIGN Blockout Fabric?
The current individual pages for the seven models above list direct dye sublimation and paper-transfer dye sublimation. Do not assume one printing statement applies to every blackback or blockout textile.
| Print Method | Current Category Guidance | What to Test |
|---|---|---|
| Direct dye sublimation | Listed for the current seven models | Ink control, strike-through, drying, heat, shrinkage and backing protection |
| Paper-transfer dye sublimation | Listed for the current seven models | Transfer paper, temperature, dwell time, pressure, color and dimensional change |
| UV printing | Use only when the exact model TDS and sample test confirm it | Ink adhesion, cracking, stretch, fold marks and curing |
| Latex / resin printing | Use only when the exact model TDS and sample test confirm it | Coating compatibility, curing, blocking, rub and finish |
Important: The older general black back fabric page mentions several ink types, but the current product pages listed here are model-specific and state direct or transfer dye sublimation. For UV or latex, ask UNISIGN to confirm the exact coated product code in writing.
How Should Blockout Performance Be Tested?
Do not approve a blockout fabric only by holding an unprinted swatch against a window. Print, heat and finish the real material, then test it under the planned light and background.
| Step | Action | Record |
|---|---|---|
| 1 | Condition and identify the sample | Model, lot, GSM, width, face and reverse |
| 2 | Measure incident illuminance without fabric | E0 in lux |
| 3 | Place the fabric at a fixed distance and tension | Orientation, distance and setup photo |
| 4 | Measure transmitted illuminance at five or more points | E1 values at center, edges and seams |
| 5 | Calculate light-blocking rate | (1 − E1 ÷ E0) × 100% |
| 6 | Repeat after printing, heat and finishing | Final rate, pinholes, edge leaks and visible show-through |
| 7 | Install against the real wall, frame or reverse graphic | Pass/fail photos from the agreed viewing distance |
For a formal laboratory method, buyer and supplier can agree on AATCC TM148 (photodetector), AATCC TM203 (spectrophotometric), or GB/T 42999-2023 (illuminometer). Confirm the chosen edition, sample condition and pass level in the purchase specification.
Published Opacity Wording by Model
| Model | Current Public Product Wording | Buyer Action |
|---|---|---|
| DSP-BLK-01 | 100% obscuring rate | Request the test method or approve with the project setup |
| DSP-BLK-01F | 100% obscuring rate | Test after print, heat, fold and finishing |
| DSP-BLK-02 | 100% obscuring rate / perfect opacity | Define the instrument, points and pass level |
| DSP-BLK-W | 100% obscuring rate | Check white reverse, edges and installed background |
| DSP-BLK-D | Good opacity | Set a numeric or visual acceptance rule for both graphics |
| DSP-BLK-DTR | Black inside; no numeric value shown | Test both faces and front-to-back image interaction |
| DSP-BLK-03 | Blockout; no numeric value shown | Test the real flag or roll-up lighting and viewing direction |
The wording above is a summary of current supplier pages, not an independent lab result. The approved sample, test report and purchase specification should control the order.
Width, Roll Length, Shrinkage and FR
| Parameter | Current Published Range | What to Put in the RFQ |
|---|---|---|
| GSM | 150–310gsm across the seven models | Target model and acceptable production tolerance |
| Maximum width | 3.2m / 126 in for most models; DSP-BLK-01 up to 5.0m / 197 in | Finished width, printer limit and guaranteed usable width |
| Standard roll length | 100m / 110 yd | Required roll length, rolls and packing |
| Published shrinkage | ≤2% on current product pages | Test temperature, time, pressure and machine/cross direction |
| FR options listed | B1 / NFPA 701 / AS 1530 / JIS L 1091 | Exact standard, destination, product code, report and validity |
| MOQ | Confirmed by model, width and stock | Model, width, quantity, destination and delivery date |
FR Must Be Confirmed by Exact Model
The current individual pages for DSP-BLK-01, DSP-BLK-01F, DSP-BLK-02, DSP-BLK-W, DSP-BLK-D, DSP-BLK-DTR and DSP-BLK-03 list available FR options including B1, NFPA 701, AS 1530 and JIS L 1091.
This list does not mean every stocked roll automatically meets every standard. Ask for the report that names the exact product, test method, result, laboratory, date and destination use. Venue rules can differ.
For a wider model-and-standard view, compare flame-retardant display fabric models and report requirements.
Where Is Blockout Fabric Used?
| Application | Recommended Starting Structure | Critical Test |
|---|---|---|
| Event or photo backdrop | Black, grey or white back | Opacity, glare, fold recovery and camera-flash result |
| Frontlit SEG or tension frame | Black or grey back with slight stretch | Heat shrinkage, recovery, silicone-edge fit and corner quality |
| Hanging banner | Double-sided blockout | Two-side registration, edge appearance and hanging flatness |
| Double-sided display | DSP-BLK-D or DSP-BLK-DTR | Image separation, two print passes and visible edges |
| Pop-up display | Black, grey or white back | Repeated folding, wrinkle recovery and hardware show-through |
| Flag or roll-up | DSP-BLK-03 or confirmed double-sided model | Weight, fold, wind load, edge finish and viewing direction |
A 6-Step Blockout Fabric Approval Process
- Define the display: size, viewing sides, frame, lighting and background.
- Choose the structure: black, grey, white, silver back or double-sided.
- Choose two or three models: compare construction before price.
- Run the full print process: use the planned ink, paper, heat and profile.
- Test opacity and dimensions: measure before and after heat and finishing.
- Approve the installed sample: record model, batch, settings and pass limits.
This process creates a repeatable purchase specification. It also reduces the risk of ordering a fabric that looks opaque as a small swatch but fails after printing or installation.
Why Source Blockout Fabric Rolls From UNISIGN?
- Multiple structures: black, grey, white, silver back and double-sided blockout
- Model-level choices: seven current blockout or backed products
- Wide-format options: most models up to 3.2m, selected black back up to 5.0m
- Commercial roll format: current pages list 100m / 110-yard rolls
- Dye-sublimation workflows: current pages list direct and paper transfer
- Sample-first support: compare print, opacity, heat and finishing before bulk production
UNISIGN has produced digital printing materials since 2007. For a reliable comparison, request the latest TDS, current FR document, labeled sample and quotation for the exact model and width.
Frequently Asked Questions
What is the best blockout fabric for dye sublimation?
There is no single best model for every job. Choose DSP-BLK-01 or DSP-BLK-01F for a black reverse, DSP-BLK-02 for grey back, DSP-BLK-W for white back, and DSP-BLK-D or DSP-BLK-DTR when both faces need separate graphics.
Is black back fabric the same as blockout fabric?
Black back is one type of blockout construction. It uses a white printable face and a black reverse or coating. Blockout is the wider performance category and can also use grey, white, silver or an internal dark layer.
Can blockout polyester fabric be dye sublimated?
Yes. The seven UNISIGN models on this page currently list direct and paper-transfer dye sublimation. Test the complete printer, ink, heat and finishing workflow before a bulk order.
Can UNISIGN blockout fabric be printed with UV or latex inks?
Do not assume UV or latex compatibility for every model. The current individual pages listed here state direct or transfer dye sublimation. Ask for written confirmation and test the exact coated product if UV or latex is required.
Can blockout fabric be printed on both sides?
Only choose a model designed for two printable faces. DSP-BLK-D and DSP-BLK-DTR are the current double-sided starting points. Test registration, show-through, heat history and finishing on both faces.
Does blockout fabric provide 100% opacity?
Some current UNISIGN product pages use the wording “100% obscuring rate,” while other models say “good opacity” or “blockout.” Treat those as supplier descriptions. Agree on a test method and pass level, then approve a printed and finished sample.
What is the maximum width of UNISIGN blockout fabric?
Most current models are listed up to 3.2m / 126 inches. DSP-BLK-01 is currently listed up to 5.0m / 197 inches. Confirm available and guaranteed usable width for the exact roll.
What is the standard roll length?
The current product pages list 100m / 110-yard standard rolls. Available width-and-length combinations should be confirmed on the quotation.
Is flame-retardant blockout fabric available?
The current model pages list FR options including B1, NFPA 701, AS 1530 and JIS L 1091. Request the current report for the exact product code and destination project.
How should I test a blockout fabric sample?
Print and heat the sample, measure light transmission or blocking rate, inspect show-through against the real background, record dimensional change, finish the edges and install it in the intended system.
Request Blockout Fabric Samples and a Factory Quote
Tell UNISIGN your application + printable sides + print method + finished size + roll width + quantity + opacity requirement + FR standard + destination. We can help build a short list for testing.
- Compare two or three structures, not one random swatch.
- Ask for the latest model-specific TDS and FR document.
- Approve opacity, color, shrinkage, finishing and installed fit.
- Keep the tested model, lot and settings with the purchase record.