Innovation & Partnership
- Joint development from the initial design to serial production.
- Your requirement is our starting point, with a focus on individual filtration solutions rather than off-the-shelf items.
polyniq®: Polymer-Powered Filtration. Engineered by nonwovens specialists
For decades, Sandler has been synonymous with high-performance nonwovens. We use our expertise for the development of filter media from special polymers, for applications where standard materials are insufficient and where special solutions are required. In close collaboration with our customers, we develop customized filtration solutions that are precisely tailored to the specific application and process while simultaneously minimizing long-term costs and effort.
With polyniq®, we turn this vision into reality! With specific meltblown nonwovens that are heat-resistant, chemical-resistant, bio-based, or functionalized: the right filter medium for every need. Do you have specific questions about polyniq®? Click here for our FAQ.
Performance & Ruggedness
- Meltblow nonwovens providing higher efficiency and an extended service life.
- For use in liquid filtration, hot gas filtration, and chemically aggressive environments.
Technology Leadership
- 25+ years of meltblown expertise
- Dedicated Sandler nonwovens specialists make expertise tangible
What is polyniq®?
polyniq® is Sandler Group's new line of special polymers in meltblown applications. Drawing on decades of experience in the manufacturing of meltblown fabric, we process selected high-performance resins into filter nonwovens that outperform standard filter media. This is possible by using carefully selected specialty polymers with unique properties:
- Chemical resistance to aggressive media. Ideal for the filtration of oils, fuels, and solvents.
- Thermal stability up to and over 200°C/ 392°F. Suitable for high performance filters in hot gas and exhaust gas applications.
- Selectively functionalized to being hydrophilic, statically charged, or low-emission, depending on the specific requirements.
- Forward-looking alternatives such as bio-based (PLA) or compostable (PBAT) options for ecological filtration solutions
We don't think of polyniq® as a standard product but rather as a customized solution to complex challenges.
Contact your polyniq® specialist
What is polyniq® particularly suited for?
polyniq® unfolds its potential whenever classic meltblown media fall short. Extreme temperatures, aggressive media, or ecological requirements - polyniq® offers solutions where other media aren't up to the task.
- Filtration of aggressive media: Filter media based on PPS or PA12 for solvents, fuels, and chemically contaminated liquids come into use where standard PP-based media fail.
- High temperature filtration: Meltblown nonwovens for exhaust gases and process air far beyond the thermal limits of standard filter media.
- Sustainable filtration solutions: bio-based media made from PLA or compostable PBAT variants
Who is polyniq® suited for?
polyniq® is designed for those in the industry who expect more from filtration: greater reliability, greater efficiency, and greater flexibility. Where standard media meet their limits, polyniq® paves the way for new possibilities as a high-performance filter medium for extreme process environments. polyniq® is a cost-effective alternative to established, non-synthetic filter media, or as a basis for innovative filtration solutions that previously were not feasible. To filter manufacturers this means expanded portfolios and new markets. For users, it means a measurable improvement in the performance of their process.
Filter Manufacturers
"polyniq® helped us to tap into a new market segment we could not conquer thus far".
User of Filters
"Ceramics and metal have their advantages, but in combination with polyniq® we get significantly more out of our filtration system - a good way to reduce cost."
Specialty polymers: a closer Look
Not every filtering application can be solved with standard synthetic media. Where polypropylene meets thermal, chemical, or functional limits, polyniq® media feature specialty polymers. Every polyniq® product is based on a selected specialty polymer offering impressive properties. We chose the best suitable polymer taking into account the specific application, the operational environment, and the required performance criteria.
- Polybutylene Terephtalate
- Sturdy. Durable. Efficient.
Within the framework of polyniq®, PBT is used as a cost-effective polyester that stands out for its high resistance to diesel and other fuels, low moisture absorption, and good temperature stability. This results in media that deliver reliable performance in demanding filtration applications while being significantly more affordable than other high-performance polymers.
- Polyphenylene Sulfide
- For extreme temperatures and aggressive chemicals
PPS is the material of choice when it gets hot and challenging: its outstanding chemical resistance renders this high-performance polymer ideal for industrial applications like exhaust or hot gas filtration. Likewise, contacts with solvents or oils leave PPS stable and effective. The processing of PPS into filter media is demanding. Sandler turns PPS into market-ready solutions.
- Polylactic Acid
- Bio-based, functional - and a viable alternative
PLA excels as a sustainable material made from renewable feedstocks. The polymer is industrially compostable and boasts good strength properties and low density—making it ideal for eco-friendly filtration solutions. With PLA, Sandler Group's polyniq® creates eco-friendly and functional filter media.
- Polyamide 6
- Hydrophilic. Robust. Versatile.
PA6 combines excellent mechanical properties with high abrasion resistance and hydrophilicity. All this makes PA6 an ideal candidate for liquid filtration meltblown media. For polyniq®, Sandler utilizes optimized PA6 grades delivering outstanding performance in both processing and application.
- Polyamide 12
- Precision in liquid filtration
In polyniq® applications, PA12 excels with its extraordinarily low water absorption, which, in combination with its hydrolytic stability and excellent wettability, enables a stable, easily wettable structure for water filtration. Also, PA12 features a high resistance against fuels, lubricants, and salt solutions, properties that render PA12 optimally qualified for the filtration of demanding liquid media.
- Polybutylene Adipate Terephthalate
- Elastic. Compostable. Sustainable.
PBAT combines high elasticity with compostability, making it an ideal candidate for sustainable meltblown media. Wherever flexible structures, ease of processing and a reduced ecological footprint are in demand, this polymer really shines. In the framework of polyniq®, Sandler utilizes PBAT grades specifically targeted at meltblown processes to enable the development of environmentally minded applications
- Thermoplastic Polyurethan
- Strong flexibility for every application
With TPU, Sandler's polyniq® utilizes a flexible and, at the same time very durable specialty polymer particularly suitable for meltblown media in applications requiring high elasticity, durability, and dynamic resilience. TPU excels in situations where the thinnest materials must retain their shape even in motion while also requiring a fine and uniform fiber structure.
Innovation starts with creativity
polyniq® is not just a portfolio of new materials, but an all-encompassing approach to research, development and joint innovation. From initial trials to scaling and joint product development: Sandler's R&D supports you all the way from initial consultations to a market-ready solution.
Start a joint development with polyniq®
polyniq® is not just a portfolio of new materials, but an all-encompassing approach to research, development and joint innovation. From initial trials to scaling and joint product development: Sandler's R&D supports you all the way from initial consultations to a market-ready solution.
If you prefer to discuss your complex inquiry in person, please take advantage of our engineering call. During a personal conversation with our filter experts, we will analyze your application, discuss possible material options, and determine which polyniq® medium is best suited for your process.
Stephanie Krauß
Product Manager
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Stephanie is with Sandler since 2019 and holds a degree in industrial engineering with a focus on logistics in production and controlling. In her current role, Stephanie is responsible for interface and product portfolio management, including strategic alignment and the analysis of products and markets.
Jana Bussler
Product Development
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Jana joined Sandler in 2015 and commenced her work as a product developer in 2021. Her focus is on the development of advanced nonwoven materials for filtration applications. Jana holds a degree in industrial engineering with a concentration in materials technology. Her work centers on polyniq®, Sandler’s development approach for specialty polymers in meltblown processes, addressing applications where standard materials reach their limits.
Franziska Müller
Senior Sales Manager
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Franziska started her career at Sandler in 2003, bringing more than two decades of experience to the company. Since 2006, her professional focus has been on filtration. Franziska holds a degree in Business Administration with a concentration on marketing, providing her with profound commercial expertise and a strong customer focus. In her role as a sales representative, Franziska is responsible for sales targeting customers with needs for synthetic dust bags, mask and respirator materials as well as HVAC applications, with a particular focus on the polyniq® product line.
Tobias Wölfel
Head of Sales Filtration
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Tobias Wölfel has been with Sandler since 2020 and, in his current role as “Head of Sales Filtration,” is responsible for the global sales of filtration nonwovens. As an environmental engineer with many years of experience in technical sales, he combines in-depth expertise with a strong market-oriented approach.
His focus lies on practical consulting in the fields of air, liquid, and industrial filtration. In this context, he develops and implements global sales and market strategies to deliver sustainable solutions for a wide range of filtration requirements.
His focus lies on practical consulting in the fields of air, liquid, and industrial filtration. In this context, he develops and implements global sales and market strategies to deliver sustainable solutions for a wide range of filtration requirements.
polyniq® FAQ
polyniq® is complex and may raise questions. In the following please find answers to the most frequent questions concerning materials, the development process, and polyniq® applications. We'll be happy to discuss any remaining questions in person.
polyniq® is a co-creation–oriented development platform for customized filter media made from high-performance polymers, specifically designed for extreme or novel applications. Therefore, polyniq® is not a product catalog, but rather a development approach.
The interplay of four key factors makes the difference. With polyniq®, the process involves:
- identifying and analyzing the application challenge
- selecting the right polymer
- creating ultra-fine structures using meltblown technology
- developing a solution tailored to the specific application
The following industries are part of polyniq’s target markets:
air filtration—HVAC, chemical industry, water and environmental technology, pharmaceuticals/medical, household, food industry, and construction.
However, this does not mean that other industries cannot also be served.
In co-creation projects, initial material concepts are available within a few weeks thanks to our existing material platform. Our in-house meltblown and polymer expertise typically presents validated solutions within just a few months.
We don’t start with over-engineering. Instead, we begin with the most economically viable standard solution—and only switch to a different polymer class when the application truly asks for it.
With PP and PBT, polyniq® covers the established market baseline. However, even within this range, new application areas are currently being developed—especially in the field of liquid filtration—that have not traditionally been part of the standard portfolio.
No, polyniq® is not a product catalog, but a solution approach. Within the framework of co-creation projects, the goal of polyniq® is to develop filtration materials tailored specifically to the customer’s needs.
For liquid filtration, we offer a modular system consisting of:
- PP – the baseline
- PBT – the cost-efficient robustness upgrade
- PA6 – for hydrophilic liquid applications
- PA12 – for more demanding water, fluid, and hydraulic filtration
- PPS – the unique premium solution for chemical and thermal extreme conditions
Polyphenylene sulfide (PPS) is the answer for applications where polymer selection becomes critical to preventing failure—high temperatures, aggressive chemicals, solvents, or oil exposure are all handled with ease by PPS.
At the same time, PPS offers the reliability and performance of a market-proven meltblown medium, making it an ideal choice for demanding applications in industrial liquid filtration.
Yes. With PLA and PBAT as raw materials, we combine performance and sustainability. This means that with polyniq®, you do not receive a compromise solution for a better CO₂ footprint. Bio-based PLA and compostable PBAT meet the highest performance requirements while also fulfilling sustainability criteria.
Meltblown filter media can generally be used in food and medical applications—but only if they comply with the relevant legal requirements and standards. These requirements vary significantly depending on the specific industry.
For production, FDA-compliant granulates are typically required. A large proportion of the raw materials we use meet these certification standards.
For the most part, yes—however, our portfolio also includes some exceptions.
For example, TPU is used in construction as a flexible moisture barrier membrane. It is also applied in the medical field, such as in components of bandages or wound dressings.
PBAT, on the other hand, can be used as a biodegradable meltblown material in applications like coffee capsules or tobacco pouches.
