PowerGuard: A New Approach to Consistent Stencil Printing
- Tannlin
- Aug 4
- 3 min read
In electronics manufacturing, stencil performance is critical to maintaining print quality, first-pass yield and production efficiency. However, even a precisely cut stencil can become a source of variation if its tension changes over time.
Traditional mesh-mounted stencils rely on several different components, including mesh, adhesive and a supporting frame. Each introduces another potential point of failure, while repeated use and cleaning can gradually affect stencil tension and print consistency.
Every variation in stencil tension has the potential to affect print quality, process stability and yield. Yet many manufacturers continue to rely on stencil designs that incorporate multiple components prone to wear, degradation and failure over time.
PowerGuard was developed by Tannlin to address this challenge with a fundamentally different approach to stencil construction.
Consistent tension. Consistent performance.
PowerGuard replaces the traditional mesh-mounted construction with an integrated stainless steel format. With no bladders, glue or mesh involved, the stencil maintains more consistent tension throughout its working life.
This stability helps create a more repeatable printing process, supporting tighter paste deposits, improved yield and more consistent performance across every shift.
The absence of glue and mesh also eliminates two common sources of stencil failure. This makes PowerGuard particularly well suited to demanding production environments where reliability and repeatability are essential, from low-volume, high-mix manufacturing to high-volume automotive applications.
Early beta testing has demonstrated the potential impact. Across European volume automotive testing, multiple PowerGuard stencils completed more than 130,000 print cycles, contributing to a 6% improvement in first-pass yield.
In a separate low-volume, high-mix PCBA application, first-pass yield increased from 75% using a traditional mesh-mounted stencil to 95% with PowerGuard. The interval between cleaning cycles also doubled.
Why stencil tension matters
Even small changes in stencil tension influence how solder paste is released from every aperture.
As tension reduces, manufacturers may experience:
Bridging between pads
Insufficient solder deposits
Excess paste creating shorts
Increased inspection failures
More manual rework
Greater machine downtime due to cleaning
Maintaining stable tension doesn't simply improve print quality—it helps create a far more predictable manufacturing process.
Greater control over the printing process
PowerGuard has been designed around the realities of modern manufacturing environments.
Its robust construction can withstand hotter and more aggressive cleaning conditions, helping manufacturers maintain stencil cleanliness without the limitations associated with traditional mesh-mounted stencils. Reduced cleaning frequency can also mean less interruption, lower consumable use and more productive time on the line.
Removing the surrounding mesh provides a larger usable print area within the same overall stencil dimensions. This gives manufacturers greater flexibility when planning panel layouts and can help maximise the available printing space.
PowerGuard can also support data-matrix identification and traceability, making it easier to track individual stencils throughout their working life and maintain greater control over production records.
Lower lifetime cost—not simply a lower purchase price
The true cost of a stencil extends beyond its initial purchase.
Replacement frequency, cleaning requirements, storage, process interruptions and disposal all contribute to its total cost of ownership. By maintaining tension and avoiding common glue or mesh failures, PowerGuard is designed to provide an extended working life and more dependable long-term performance.
Its compact construction also reduces shop-floor and storage requirements. More stencils can be stored within the same area, helping manufacturers make better use of valuable production space while simplifying stencil handling and organisation.
At the end of its working life, PowerGuard offers another practical advantage. Its 100% recyclable stainless steel construction allows used units to be sold for scrap rather than requiring manufacturers to pay for them to be disposed of.
This combines a more sustainable approach with a clear commercial benefit.
PowerGuard is designed for a wider range of applications
PowerGuard is available across a growing range of stencil formats and foil specifications.
Current formats include:
584 × 584 mm
584 × 736 mm
620 × 736 mm
550 × 650 mm
Fine-grain foil thicknesses from 30µm to 300µm are now supported, with further formats and nickel foil options planned as the range continues to develop.
This expanding range will allow more manufacturers to adopt PowerGuard across different lines, printer formats and application requirements.
A more controlled approach to stencil production
PowerGuard is supported by Tannlin's wider stencil-manufacturing expertise and automated production technology.
By combining high-accuracy laser cutting, controlled welding, inspection and traceability, Tannlin manages more of the stencil production process within a single integrated workflow. This helps reduce manual variation and ensures the repeatability designed into PowerGuard is maintained from manufacture through to the production line.
PowerGuard is more than an alternative stencil format. It represents a more controlled approach to stencil printing—one designed to deliver consistent performance, extended working life, more efficient storage and a fully recyclable end product.
For manufacturers looking to improve print stability while reducing the hidden costs and limitations associated with traditional mesh-mounted stencils, PowerGuard provides a stronger foundation.
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