UNISIGN · LBG3000 OUTDOOR BACKLIT FLEX
680 GSM Backlit Banner Material
680 gsm backlit banner is the metric match for about 20 oz backlit flex. UNISIGN LBG3000 is a translucent PVC banner with a 500D × 500D woven base and 18 × 18 threads per square inch.
Use it as a sample starting point for outdoor lightboxes and tensioned illuminated signs. Approve light transmission, colour, welding and tension on the production sample.
Is 680 GSM Backlit Banner the Same as 20 oz Backlit Flex?
Yes, for normal buying and comparison: 680 g/m² is about 20.1 oz/yd². Suppliers often round it to 20 oz. Always compare the unit and the exact model because “oz” can be used differently in some markets.
The weight alone does not prove better brightness, more even light, longer outdoor life or higher strength. Those results also depend on the coating, scrim, white point, ink load, lightbox and installation.
LBG3000 680 GSM Backlit Banner Specifications
These values are taken from the current UNISIGN LBG3000 product listing. The exact order should be checked against the latest technical data sheet and production sample.
| Specification | Current listed value | What the buyer should confirm |
|---|---|---|
| Model | LBG3000 outdoor backlit banner | Model code on quotation, sample and roll label |
| Construction | Translucent PVC backlit flex with woven polyester base | Coating type, finish and colour |
| Nominal weight | 680 g/m² (20.1 oz/yd²) | Current tolerance on the TDS |
| Base yarn | 500D × 500D | Warp and weft yarn for the supplied lot |
| Base density | 18 × 18/sq.in | Test method and tolerance |
| Standard widths | 1.8 / 2.2 / 2.5 / 2.8 / 3.2 m | Available stock width and usable print width |
| Roll length | 50 m standard; 25 / 30 / 75 / 100 m listed as options | MOQ and availability for the requested length |
| Ink families | Solvent, eco-solvent, UV and latex | Printer, ink, profile, ink load and drying/curing test |
What 680 GSM Tells You—and What It Does Not
| Question | What 680 gsm helps describe | What it does not prove | Better evidence |
|---|---|---|---|
| Is it a higher-weight backlit option? | Yes. It is heavier than common 440 and 610 gsm backlit grades. | It does not prove a longer service life. | Tensile, tear, adhesion, ageing and installation tests |
| Is it brighter? | Weight helps identify the grade. | No. More weight can also reduce light transmission. | Measured transmission plus lit sample approval |
| Is light more even? | Weight may affect construction and coating amount. | No. Scrim visibility and coating uniformity matter. | LED lightbox check for hotspots, pinholes and dark lines |
| Is it stronger? | The 500D × 500D, 18 × 18 base is relevant. | Weight alone is not a strength result. | Current tensile, tear and weld/seam test data |
When Is 680 GSM a Good Starting Point?
Large outdoor lightbox
- Backlit PVC face
- Tensioned frame
- Day and night viewing
- Production sample can be tested
Very wide face
- Check exact roll width
- Plan seams or welds
- Test seam in the lit box
- Confirm transport and handling
Opaque or frontlit sign
- Use blockout when light must stop
- Use frontlit when light is in front
- Use textile media for a textile frame
- Do not choose by weight alone
5 Tests Before a Production Order
- PrintUse the real printer, ink, profile and artwork. Include black, fine text, gradients and solid colour.
- View unlitCheck white point, surface, colour, banding and handling marks in normal daylight.
- View litUse the final LED spacing and box depth. Check hotspots, dark scrim, pinholes, black and colour balance.
- FinishRun the intended weld, hem, eyelet or clip method. Inspect the seam lit and unlit.
- TensionFit the real frame. Check edge grip, wrinkles, dimensional change and appearance after a set period.
Ask the supplier to identify the test method, sample lot and acceptance limit. A photograph without the lightbox setup cannot prove light performance.
Lights Off vs Lights On Approval
| Check | Lights off | Lights on | Record |
|---|---|---|---|
| White area | Surface colour and visible marks | White point, colour cast and uniformity | Light source, colour temperature, box depth and photo settings |
| Dark area | Black appearance and banding | Black density and unwanted glow | Ink mode, passes, profile and measured colour target |
| Fine detail | Sharp edges and text | Bleed, flare and loss of contrast | Viewing distance and smallest approved detail |
| Seam / weld | Flatness and alignment | Bright or dark seam line | Weld method, overlap, temperature, speed and pressure |
| Full face | Wrinkles and tension | Hotspots, shadows and scrim pattern | Finished size, hardware and tension method |
3 Backlit Banner Weights to Compare
A short product list is useful here. It lets a buyer compare the 680 gsm target with one lighter and one heavier option. Images help the buyer request the correct sample, but the data table—not the image—should decide the model.
LIGHTER OPTION · 610 GSMLBG55/610
- 610 gsm (18 oz)
- 500D × 500D
- 18 × 12/sq.in
- Widths listed to 3.2 m and 5 m
- Laminated backlit
TARGET OPTION · 680 GSMLBG3000
- 680 gsm (20.1 oz)
- 500D × 500D
- 18 × 18/sq.in
- Standard widths listed to 3.2 m
- Outdoor backlit banner
HEAVIER OPTION · 820 GSMLBG5000
- 820 gsm (24.1 oz)
- 1000D base
- 18 × 12/sq.in
- Standard widths listed to 3.2 m
- Outdoor backlit banner
Each value applies only to the named model. The LBG5000 page contains an incorrect LBG3000 heading in one specification block, so confirm the model code and current TDS on the quotation.
Printing the 20 oz Backlit Flex
LBG3000 lists solvent, eco-solvent, UV and latex ink compatibility. There is no single safe set of speed, heat, cure or ink-load numbers for every printer. Use the printer and ink supplier’s media guidance, then approve the exact roll with a test image.
| Ink family | First checks | Backlit-specific approval |
|---|---|---|
| Solvent / eco-solvent | Profile, total ink, drying, take-up and safe outgassing time | Lit black density, colour shift, banding and coating response |
| UV | Ink adhesion, cure, flexibility and cracking after folding or tension | Lit pinholes, gloss difference, layer build and weld/finish area |
| Latex | Certified or tested profile, heat, curing, dimensional change and take-up | Lit colour, edge flatness and surface marks after heat |
Common 680 GSM Backlit Banner Applications
Large Lightbox Face
Approve the full face under the final light source. Check tension, corners, scrim visibility and colour.
Retail and Transit Display
Check the image from the real viewing distance in daylight and at night.
Roll Supply and QC
Ask for the roll label, lot number, current TDS and production sample before bulk approval.
What to Send for a Fast Sample and Quote
| Detail | Example | Why it matters |
|---|---|---|
| Product target | LBG3000, 680 gsm / 20.1 oz | Keeps the model and weight clear. |
| Finished sign size | 3.0 × 8.0 m | Sets roll-width, seam and tension needs. |
| Lightbox | LED type, spacing, depth and colour temperature | Controls lit appearance. |
| Printer and ink | Brand, model and ink family | Supports media-profile and curing checks. |
| Finishing | HF weld, hot-air weld, hem, eyelet or clip | Changes seam and edge approval. |
| Width and length | 3.2 m × 50 m | Confirms standard format and usable width. |
| Performance data | Transmission, tensile, tear, weld and fire report if required | Replaces broad claims with order-specific evidence. |
| Quantity and deadline | Rolls, destination and needed date | Supports stock, production and freight planning. |
680 GSM Backlit Banner FAQs
How many ounces is a 680 gsm backlit banner?
It is about 20.1 oz per square yard. Many buyers and suppliers call this a 20 oz backlit banner or 20 oz flex face.
Is 20 oz backlit flex always 680 gsm?
20 oz/yd² converts to about 678 g/m², so 680 gsm is a normal rounded metric match. Confirm whether the seller means ounces per square yard and check the model TDS.
Is a 680 gsm backlit banner brighter than a 610 gsm banner?
Not necessarily. Weight does not prove brightness or transmission. Compare printed samples in the same lightbox with the same ink, LED spacing, depth and viewing conditions.
What is the base fabric of LBG3000?
The current UNISIGN listing states a woven 500D × 500D base with 18 × 18 threads per square inch.
What is the maximum width of LBG3000?
The product summary lists 3.2 m / 126 in and standard widths of 1.8, 2.2, 2.5, 2.8 and 3.2 m. A lower table also lists 5 m, so any 5 m requirement needs written confirmation before planning.
Can LBG3000 be printed with solvent, UV or latex ink?
The current product table lists solvent, eco-solvent, UV and latex. Confirm the exact printer and ink, then run a sample for adhesion, curing, colour, flatness and lit appearance.
What should I test before ordering?
Test the printed sample with lights off and on, then test the planned weld or seam, fit it to the real frame, check tension and confirm the final roll specification.
Is 680 gsm enough evidence for outdoor durability?
No. Weight is only one specification. Ask for current tensile, tear, adhesion and ageing data, plus a production sample and an installation-specific test.
Should the banner be folded for shipping?
Roll transport is the safer starting choice for backlit media. Folds can create marks that become more visible when lit. Confirm packaging and core size before shipping.
Can I request a fire-rated version?
Ask for the required standard and a current report that names the exact product or order. Do not apply a report from another model to the full backlit range.
Request a 680 GSM Sample With the Right Evidence
Send these 8 details so UNISIGN can confirm LBG3000 or recommend a better backlit grade:
- Finished lightbox size
- Indoor or outdoor use
- Printer and ink
- LED spacing and box depth
- Finishing and tension method
- Roll width and quantity
- Required test reports
- Delivery country and date
Related Backlit Banner Pages
- PVC Backlit Banner Material and Product Range
- LBG3000 Outdoor Backlit Banner Product Page
- LBG55/610 Laminated Backlit Banner
- LBG5000 820 GSM Outdoor Backlit Banner
- All PVC Banner Materials
Product information: UNISIGN · Reviewed September 15, 2026. Values apply to the named model. Confirm the current TDS, tolerance, sample and reports for the intended order. About UNISIGN · Contact the PVC banner team.
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