In the packaging industry, high-quality printing on polypropylene (PP) woven bags is

crucial for branding, durability, and functionality. Double-sided printing enhances

visibility and provides additional space for product information, logos, and

compliance details.

However, sophisticated equipment that guarantees color accuracy, speed, and

efficiency is needed to achieve precision in double-sided printing. To satisfy these

requirements, the Armstrongex PrinTek 6 Roll-to-Roll Flexo Printing Machine was

designed.

With its cutting-edge technology, this machine delivers seamless six-color printing on

both sides of PP woven bags, ensuring superior print quality, minimal downtime, and

cost-effective production.

Why Double-Sided Printing Matters for PP Bags

As a result of their durability and adaptability, PP woven bags are used a lot in

agriculture, chemicals, building, and food packaging. Double-sided printing offers

several advantages:

1. Enhanced Branding & Marketing

● Double-sided printing maximizes visibility by displaying logos and product

information from any angle.

● This ensures brand recognition remains strong whether bags are stacked,

carried, or displayed.

● The additional print space allows for creative designs that make products

stand out on shelves or during transit.

2. Regulatory Compliance & Information Clarity

● Many industries require extensive labeling, including safety warnings,

barcodes, and usage instructions.

● Double-sided printing accommodates more text and graphics without

overcrowding.

● This helps businesses meet legal requirements while keeping information

legible and well-organized for end-users.

3. Professional Appearance & Perceived Value

● High-quality printing on both sides creates a polished, premium look that

enhances customer perception.

● Single-sided bags might look raw, but double-printed PP bags show that they

are durable and that you pay attention to the little things.

● This small improvement can help the brand's reputation and support higher

prices.

4. Cost Efficiency & Reduced Need for Additional Labels

● Printing essential details directly onto both sides of the bag eliminates the

need for separate tags or stickers.

● This reduces material costs, simplifies inventory management, and speeds up

packaging processes.

● Over large production runs, these savings significantly improve profit margins.

5. Durability & Long-Lasting Print Quality

● Advanced flexo technology, such as PrinTek 6, allows for double-sided prints

that are resistant to fading, scratches, and moisture damage.

● This ensures critical information remains readable throughout storage,

transport, and usage.

● When you print on both sides of reusable bags, your brand stays noticeable

and makes an impression even after many uses.

To achieve flawless double-sided printing, businesses need a machine that offers

precision registration, fast drying, and high-speed production, all of which the PrinTek

6 delivers.

Key Features to Look for in a PP Bag Printing Machine

When selecting a flexo printing machine for double-sided PP bag production,

consider the following features:

1. Multi-Color Printing Without Cylinder Changes

● Efficiency is increased, and downtime is decreased when various colors may be

printed in a single run.

● This PrinTek 6 supports six-color printing without requiring cylinder changes,

ensuring steady, uninterrupted output.

● Any company that needs to print a lot of good papers at once should use this

tool.

2. High-Speed Printing with Precision Registration

● Fast printing speeds (up to 120 meters/minute) enhance productivity, allowing

businesses to meet large orders efficiently.

● Perfect alignment is guaranteed by the 360° constant registration adjustment,

even during high-speed runs.

● This stops mistakes and wasteful material use. This precision is critical for

double-sided printing, where even minor shifts can ruin the final product.

3. Advanced Drying System

● Efficient drying prevents smudging, which is especially crucial for double-sided

printing, where wet ink can transfer to rollers or the opposite side.

● The PrinTek 6 quickly sets the ink with hot air/IR fans and ovens that hang

from the roof.

● This makes sure the prints are easy to see. This system also minimizes

downtime, as the material is ready for the next printing stage immediately.

4. Automatic Web Control & Error Detection

● Throughout the printing process, the Automatic Edge Position Control (EPC)

maintains the material's alignment, avoiding deviations that might result in

misprints.

● Additionally, web inspection systems detect defects on one or both sides,

ensuring consistent quality.

● These automated features reduce manual intervention and improve overall

efficiency.

5. Flexible Printing Configurations

● The machine supports 6+0, 5+1, 4+2, and 3+3 printing setups, allowing

businesses to customize front-and-back printing as needed.

● This flexibility is essential for producing different bag designs without requiring

separate machines or extensive reconfiguration.

● Whether for branding, compliance, or aesthetic purposes, the PrinTek 6 adapts

to various printing needs.

How the PrinTek 6 Delivers Superior Double-Sided Printing

1. Gearless Timing Belt Drive for Halftone Printing

● Unlike traditional gear-driven machines, the PrinTek 6 uses a timing belt

system, reducing vibration and improving print clarity.

● This design is particularly beneficial for halftone and fine-detail printing,

ensuring sharp, high-resolution images on both sides of PP bags.

● Additionally, the printing plates' lifetime is increased by the seamless

operation.

2. Chamber Doctor Blades & Ceramic Anilox Rollers

● The chamber doctor blade method makes sure that the ink is spread out

evenly so there are no streaks or blotches that could ruin the quality of the

print.

● Ceramic anilox rollers exactly move the ink, and ink pumps make sure that

there is constant circulation, which cuts down on waste and ensures that all

colors are produced evenly.

● These features are crucial for maintaining vibrant, uniform prints across large

production runs.

3. High-Speed Production with Minimal Waste

● With speeds reaching 120 m/min, the PrinTek 6 significantly reduces

production time, making it ideal for high-volume orders.

● The automatic meter counter stops the machine at the set quantity,

preventing overruns and material waste.

● Such speed not only lowers costs but also makes sure that orders are filled on

time, which is very important in markets where competition is high.

4. Corona Treatment Option for Better Ink Adhesion

● An optional corona system enhances surface energy on PP materials, ensuring

stronger ink bonding and reducing the risk of fading or peeling.

● This feature is particularly useful for bags exposed to harsh environments,

such as agricultural or industrial packaging.

● Improved ink adhesion means longer-lasting prints, even under rough handling

conditions.

5. Integrated Cutting & Stacking System

● To precisely cut the printed cloth into bag-sized sheets, the PrinTek 6 comes

with a hot knife or rotary blade cutters.

● An automatic stacker organizes cut pieces for further processing, streamlining

workflow and reducing labor requirements.

● This end-to-end automation ensures faster turnaround times and reduces the

risk of manual handling errors.

Conclusion

The Armstrong PrinTek 6 is a game-changer for businesses that require high-speed,

high-quality, double-sided printing on PP woven bags. It has precision registration,

advanced drying, six-color flexo printing, and automatic controls that keep

production costs low while output is high.

Whether you need branded packaging, industrial sacks, or food-grade bags, the

PrinTek 6 ensures vibrant, durable prints on both sides, making it the ideal solution

for modern packaging demands.

Ready to upgrade your PP bag printing process? Visit www.armstrongex.com to learn

more about the PrinTek 6 and other advanced packaging solutions!