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Double-side Printing Blockout Banner
A fully opaque, white-on-white banner material engineered for independent high-quality graphics to be printed on both sides without show-through or color interference.
Manufactured by Shanghai Hanker Industrial Co., Ltd.
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Product Overview
Double-side Printing Blockout Banner is a specialized substrate constructed with a central black light-blocking core laminated between two identical white printable surfaces. This tri-layer structure is designed to facilitate dual-sided printing where each side displays a completely independent graphic with no visibility or color bleed-through from the opposite side.
The core opacity exceeds 99%, effectively isolating the two printed images. Both outer layers are optimized for digital printing, offering consistent color gamut and ink adhesion. This material eliminates the need to print two separate banners and seam them together, providing a more efficient, professional, and durable solution for double-sided signage applications such as hanging banners, retail displays, and outdoor signage where visibility from multiple angles is required.
Primary Feature
Independent Double-Sided Printing
Construction
White Printable Face / Black Core / White Printable Face
Opacity Level
> 99% Light Blocking
Ideal For
Hanging Banners, Retractable Stands, Pole Banners
Product Parameters
Technical specifications detailing the multi-layer construction and performance attributes of Double-side Printing Blockout Banner.
Physical & Construction Properties
| Total Thickness | 15 - 18 mil (380 - 450 μm) |
| Printable Face Thickness (Each Side) | Approx. 3 mil (80 μm) PVC |
| Central Blockout Core Thickness | Approx. 9-12 mil (230-300 μm) Black PE/PVC |
| Total Weight | 550 - 650 gsm |
| Standard Widths | 1.27m, 1.52m, 1.6m, 3.2m |
| Roll Length | 30m, 50m |
| Surface Finish (Both Sides) | Smooth Matte, Identical |
| Core Diameter | 3" (76mm) / 6" (152mm) |
Performance Parameters
| Tensile Strength (Warp/Weft) | > 1400 N/5cm / > 1300 N/5cm |
| Tear Resistance | > 35 N (Initial) |
| Opacity (Light Blocking) | > 99.5% |
| Dimensional Stability | < 1.0% shrinkage (24hrs @ 70°C) |
| Color (Faces) | Bright White (Both Sides) |
| Temperature Resistance | -20°C to 70°C |
| Outdoor Durability (Printed & Laminated) | 2-5 years |
Resistance Properties
| Water Resistance | Excellent (Waterproof, Sealed Edges) |
| UV Resistance (Base Material) | Good (Enhanced with UV inhibitors in faces & core) |
| Scratch Resistance | Moderate (Enhanced with overlaminate) |
Note: Due to its thickness and structure, this material has excellent rigidity and hangs very taut. It is important to allow extra time for ink curing between printing Side A and Side B, especially with solvent-based inks, to prevent smudging during roll handling.
About Shanghai Hanker Industrial Co., Ltd.
Shanghai Hanker Industrial Co., Ltd. is China Double-side Printing Blockout Banner Manufacturers and Wholesale Double-side Printing Blockout Banner Suppliers. With over 20 years of industry experience, we have grown into a fully-integrated enterprise capable of producing a complete range of products across the entire industrial chain.
2004-2005
Company Foundation
Shanghai Hanker Industrial Co., Ltd began preparations in 2004 and was officially registered and established in 2005. The DPI brand was founded in the same year, marking the beginning of our journey in the adhesive materials industry.
2012
Expansion of Production Base
To enhance the influence and market share of the DPI brand, we expanded our production base to Nanhuating Industrial Park in Fengxian District, Shanghai. The facility covers 25,000 square meters and employs over 160 people, equipped with modern production workshops and advanced equipment including silicone coating machines, laminating machines, and automated punching machines.
2016
New Manufacturing Facility in Jiangsu
We established Jiangsu DPI New Materials Co., Ltd. in Qidong, Jiangsu Province, covering 34,000 square meters. This facility is equipped with China's leading calendering machine, high-standard silicon coating machines, and PE coating machines, enabling independent production of raw materials like PVC calendering film and release paper.
Present
Industry Leadership and Innovation
Today, Hanker has developed into a fully-integrated enterprise with comprehensive capabilities across upstream, midstream, and downstream industrial chains. We hold over 65 invention and utility model patents, and our high-quality DPI products are sold to more than 80 countries worldwide.
Certifications & Quality Standards
National High-tech Enterprise
ISO9001 Quality Management
ISO14001 Environmental Management
Shanghai Contract-abiding Enterprise
Environmental Commitment
We actively uphold our environmental protection responsibilities by utilizing advanced RTO equipment, achieving a 99.9% waste gas treatment rate. We encourage full employee participation in environmental practices and support sustainable development through tangible actions.
Product Benefits
This material offers distinct advantages for applications requiring two-sided visual communication.
True Dual-Sided Graphics
Enables printing of two completely different, high-quality images on opposite sides with absolute opacity, ensuring no graphic interference or "ghosting."
Cost & Time Efficiency
Eliminates the labor and material cost of printing two separate banners and sewing or taping them together, consolidating production into a single substrate.
Enhanced Durability & Professional Finish
The monolithic laminated construction is more robust than seamed banners, with sealed edges that prevent delamination and moisture ingress, offering a cleaner finished appearance.
Product Features
The tri-layer laminate construction provides specific features critical for double-sided print applications.
- Dual Printable White Faces: Two identical, high-quality white PVC surfaces provide an optimal base for vibrant color reproduction on both sides.
- High-Density Black Core: A thick, opaque central layer that completely blocks light transmission, achieving over 99.5% opacity.
- Permanent Laminate Bond: The three layers are thermally fused, creating a single, durable sheet that resists separation.
- Excellent Dimensional Stability: The balanced construction minimizes stretch and shrinkage, ensuring print registration is maintained on both sides.
- Rigid, Taut Hanging Properties: The thickness and weight allow the banner to hang flat and resist flapping in wind better than single-layer materials.
- Consistent Thickness Profile: Precision manufacturing ensures even caliper across the entire roll for reliable printer feed and finishing.
- Waterproof & Weather-Resistant: Fully sealed laminate edges and material composition protect against rain and humidity.
- Compatible with Standard Inks & Laminates: Works with solvent, eco-solvent, and UV inks. Can be overlaminated for extra protection if needed.
Product Applications
Double-side Printing Blockout Banner is specified for signage applications where messages must be visible from opposing directions or in freestanding formats.
Street Furniture & Outdoor Advertising
Ideal for hanging banners, pole banners, and fence wraps where traffic flows from both sides.
- Pole Banners:For lampposts along streets and parks, displaying messages to both sidewalks and roadways.
- Construction Site Fence Wraps:Branding and information visible from the exterior public side and the interior worksite side.
- Bridge & Overpass Banners:Captures attention from traffic moving in both directions.
Retail & Event Environments
Used for freestanding displays, hanging signs, and aisle markers in high-traffic areas.
- Hanging Mall Banners:Promotional messages visible to shoppers approaching from either end of a corridor.
- Exhibit Hall & Trade Show Signage:Island booth signs and overhead banners visible from all approaches.
- Retail Aisle Markers:Category signs suspended from ceilings, readable from both sides.
Vehicle & Temporary Signage
Provides a durable, professional solution for mobile or semi-permanent double-sided signs.
- Sidewalk A-Frames & Yard Signs:Freestanding signs for restaurants, real estate, and events.
- Vehicle-Top Signs (Taxi, Delivery):Lightweight yet rigid panels for advertising on vehicle roofs.
- Double-Sided Retractable Banner Stands:For lobby displays or trade shows where viewers circulate.
Production & Handling Guidelines
Two-Sided Printing Workflow
Print and fully cure Side A first. Carefully re-roll the printed material with the printed side facing out. Then load for Side B printing, ensuring precise alignment (registration) using printer marks.
Ink Curing is Critical
Allow extended drying/curing time between sides, especially for solvent inks. Insufficient curing can lead to ink transfer (offsetting) when rolled, smudging Side A.
Finishing & Hemming
The material's thickness requires heavy-duty sewing machines or welding for hems. Grommets should be reinforced with extra material or patches due to the rigid core.
Installation Considerations
Account for the material's increased weight when designing hanging systems. Ensure supports (poles, frames, cables) are rated to handle the load, particularly in windy conditions.
Frequently Asked Questions
Frequently asked questions regarding the use and capabilities of Double-side Printing Blockout Banner.
Can I print directly on the black core layer?
No. The black core is not designed for printing. It is sandwiched between two white printable faces. Graphics must be printed on these white outer layers. The core's sole function is to provide opacity.
How do I ensure the graphics on both sides align properly?
Use registration marks printed on the trim area of Side A. When loading for Side B, align these marks using the printer's optical registration sensor if available. Consistent and careful rolling/unrolling between print jobs is essential. Allow for a slight trim margin.
Is this material suitable for retractable banner stands?
It can be used, but with caution. Its thickness and rigidity may not roll smoothly onto smaller-diameter rollers in some stand mechanisms and could strain the spring. Check with the stand manufacturer for compatibility with thick, double-sided media before use.
What is the best way to hem this thick banner material?
High-frequency welding or a heavy-duty sewing machine with UV-resistant thread is recommended. Standard banner tape and a hot knife may not provide a strong enough bond for the weight and rigidity. Reinforce hem areas where grommets will be placed.
How does the durability compare to two sewn-together single-sided banners?
The laminated construction is generally more durable. It has no sewn seam, which is a potential failure point for moisture ingress and tearing. The sealed edges and monolithic structure offer better resistance to wind stress and environmental factors, typically resulting in a longer outdoor lifespan.
Interested in DPI Color Cutting Vinyl?
As a direct manufacturer with over 20 years of experience, Shanghai Hanker Industrial offers competitive pricing, flexible order quantities, and comprehensive technical support for our DPI brand products.
