The overall quality of a window system largely depends on the materials and assembly technologies used in the production of insulating glass units (IGUs). One of the most critical components in this process is the sealant. To ensure a high level of airtightness and durability, insulating glass units are manufactured using a dual-sealing system.

A high-quality sealant is essential for providing reliable resistance to water vapor and gas permeability. The two-component polyurethane sealant JOD-32 is manufactured using state-of-the-art equipment and premium raw materials supplied by leading global manufacturers at the Polish-Ukrainian company Gran Polychem, which has been operating since 2018.

This product opens up new opportunities for Ukrainian manufacturers of glazing systems. Gran Polychem is committed to raising quality standards in the insulating glass industry by producing an environmentally friendly, high-performance sealant for secondary sealing applications.

Gran Polychem specializes in the development and production of innovative sealants. Its flagship product, JOD-32, is designed for the secondary sealing of insulating glass units and fully complies with European quality standards. Quality is the company’s highest priority, which is why it continuously invests in advanced technologies, laboratory research, and the ongoing modernization of its production facilities.

Special manufacturing technologies ensure the environmental safety of JOD-32 polyurethane sealants. The two-component formulation is completely mercury-free, making it safe for both people and the environment.

Each year, the company makes significant investments in upgrading its laboratory equipment. These investments enable Gran Polychem to carry out advanced research, implement innovative technological solutions, and continuously improve its manufacturing processes.

The company’s highly qualified specialists ensure the consistency, reliability, and reproducibility of every product’s performance. The use of modern laboratory equipment guarantees the accuracy and reliability of all testing procedures

JOD-32 — The Optimal Solution for Insulating Glass Unit Production

JOD-32 is an innovative, high-quality polyurethane sealant manufactured using an environmentally friendly and safe formulation.

Only safe, environmentally responsible raw materials are used in its production, ensuring that the entire manufacturing process complies with modern international standards. The product contains no heavy metals or harmful volatile substances, eliminating the risk of hazardous emissions during use.

The product has been tested and certified by recognized certification bodies in Poland and Germany, confirming its compliance with all applicable requirements. JOD-32 fully meets the requirements of DIN EN 1279 Parts 2, 3, and 4 for the production of insulating glass units. In addition, its quality has been verified by certifications from ift Rosenheim and TÜV Rheinland.

Key Features

• Excellent adhesion to glass and various types of spacer bars;

• Minimal water vapor and gas permeability;

• Mercury-free and free from other toxic substances;

• Full compatibility with butyl sealants used as the primary sealing system;

• High elasticity and hardness after curing;

• Extended working time combined with a shortened curing period.

JOD-32 is suitable for the production of both single- and multi-cavity insulating glass units. Thanks to its unique formulation, the material’s viscosity has been optimized, providing several important advantages:

• Compatibility with virtually all types of sealant application equipment;

• Efficient operation at relatively low working pressure without compromising productivity;

• Significantly reduced requirements for routine equipment maintenance;

• Easier sealing of corner joints, particularly under elevated temperature conditions.

All technical characteristics of JOD-32 fully comply with European standards for dual-sealing systems, making it one of the most advanced and reliable solutions available for the Ukrainian insulating glass industry.

For more information or professional consultation, please contact us at +38 (067) 656 41 80 or complete the contact form on www.winstyle.ua. Our specialists will be pleased to provide expert advice and help you select the optimal solution for your production needs.

The post JOD-32 Polyurethane Sealant for the Production of High-Quality Insulating Glass Units appeared first on WinStyle.

There are several types of sealants used for secondary sealing of insulating glass units (IGUs): two-component polyurethane- and polysulfide-based sealants, one-component hot-melt sealants, and silicone sealants. A separate category includes two-component structural silicone sealants used for structural glazing applications.

The primary competition in today’s market is between polyurethane (PU) and polysulfide (PS) sealants. Each has its own advantages and limitations. One of the key differences is cost: polyurethane sealants are generally more affordable but require greater attention to manufacturing discipline and process control. Polysulfide sealants, on the other hand, are less demanding in terms of precise component mixing and can tolerate certain equipment deviations, partially offsetting their higher purchase price.

Recently, the market has evolved with the introduction of a new generation of polysulfide sealants whose price is comparable to—or in some cases even lower than—that of polyurethane alternatives. Manufacturers claim that these new formulations offer performance comparable to conventional polysulfide sealants while arguing that the pricing of traditional European products has become unnecessarily high.

In practical production, it is difficult to distinguish the new-generation polysulfide sealant from its conventional counterpart. However, the new PS sealant has a noticeably stronger characteristic odor and a lower Shore A hardness value. The latter can often be recognized even without specialized measuring equipment. These characteristics deserve a more detailed technical analysis and will be discussed in a future article.

It is important to note that one of the most critical indicators of sealant quality is its resistance to water vapor and gas permeability. These performance characteristics are regulated by DIN EN 1279-2, DIN EN 1279-3, and DIN EN 1279-4and must be verified through certification issued by recognized independent organizations such as TÜV, ift Rosenheim, CECAL, IKATES, and the Instytut Szkła i Ceramiki i Materiałów Budowlanych.

Some European certification bodies have reported that certain manufacturers submit premium-quality materials for testing during the certification process but subsequently alter the formulation and quality of the product after certification has been obtained. Such cases raise an important question: does the end user actually receive a product that meets the declared quality standards?

When comparing different sealants, it is essential to evaluate products within the same category—namely, high-quality polyurethane and polysulfide sealants whose performance has been verified through recognized certification.

Gran Polychem emphasizes that its polyurethane sealants are manufactured exclusively using raw materials supplied by leading global producers, including Omya, DOW Chemical, Covestro, DEZA, and Evonik.

Ease of application is another important consideration. When working with any polyurethane sealant, including JOD-32, manufacturers must maintain strict production discipline by ensuring that equipment is properly maintained, the mixing unit remains clean, and, in particular, that Component B, which is highly sensitive to moisture, is carefully monitored.

Despite these production requirements, JOD-32 offers several significant advantages:

• No strong or unpleasant odor;

• Fast curing;

• A proprietary, thoroughly proven formulation;

• Low operating pressure;

• High material flow rate, enabling highly efficient insulating glass unit production.

The final advantage is particularly valuable for manufacturers operating under piece-rate production systems, where productivity directly affects efficiency.

The high quality of JOD-32 is confirmed by the company’s ISO 9001:2015 certification and by successful testing conducted by the Instytut Szkła i Ceramiki i Materiałów Budowlanych in accordance with DIN EN 1279-6. Product certification by ift Rosenheim is currently undergoing renewal.

It is also worth noting that more than half of insulating glass manufacturers use Reinhardt Technik Ecostar 250, HDT Classic, Pro 6, and T-S-I Ecomix extruders, whose performance depends significantly on the viscosity and density of the sealant being processed.

At the same time, one of JOD-32’s strongest competitive advantages remains its price, which is significantly lower than that of conventional polysulfide sealants. The manufacturer continues to invest in further improving the product’s performance and enhancing the quality of JOD-32.

Individual Customer Support

Gran Polychem maintains close communication with its customers and responds promptly to their feedback, requests, and technical requirements.

Whenever necessary, the characteristics of the product can be customized to meet the specific needs of a particular manufacturing process. Parameters such as curing speed, viscosity, sealant density, and other technical properties can be adjusted to match the customer’s production requirements.

All sealants are manufactured in Ukraine. Thanks to the use of compact mixing systems, the company is able to produce test batches quickly and efficiently according to each customer’s individual specifications.

The quality of JOD-32 is confirmed by the company’s ISO 9001:2015 certification and by successful testing conducted by the Instytut Szkła i Ceramiki i Materiałów Budowlanych in accordance with DIN EN 1279-6. Product certification by ift Rosenheim is currently undergoing renewal.

Gran Polychem also offers a container return program for its partners. This initiative enables customers to conveniently recycle used containers while receiving discounts on future sealant purchases.

The company is currently focused on expanding its market presence and increasing sales. This growth is supported by an excellent price-to-quality ratio, professional technical support, the availability of trial equipment, and flexible installment purchase options for production equipment.

We are always open to new partnerships and are committed to providing every customer with the highest level of service and technical support.

The post Gran Polychem — The Quality Guarantee for Polyurethane Sealants appeared first on WinStyle.

By 2018, it had become clear that many companies operating in the insulating glass components sector—from manufacturers of individual components to suppliers and distributors—had significantly increased their activity in the Ukrainian window market.

Some of these companies do not even have a representative office in Ukraine. However, they clearly understand that the modern energy-efficient technologies already widely adopted across Europe also hold great potential for the Ukrainian market. As a result, they closely monitor market developments and the activities of the industry’s key players.

This raised an important question: is it possible to successfully manage a manufacturing business while simultaneously developing a thriving trading company in such a specialized niche? The answer is certainly yes.

We discussed this in detail with Roman Sandulyak, Co-Founder of the trading company WinStyle, as well as Director and Co-Founder of the manufacturing company Gran Polychem.

R.S.: My journey began at Bravo Glass back in 2001. It was the first and only company where I worked as an employee. I joined the company at a time when the market for insulating glass unit (IGU) components was only beginning to take shape. We actively studied and developed this business segment despite the fact that the market was still relatively small.

I remained with the company until 2008. During that time, I progressed from Sales Manager to General Director and left the company at the peak of its development, with a team of more than 200 employees and nine branches. According to our estimates, we held approximately 30% of the Ukrainian market for insulating glass components at that time.

WT: What led to your decision to leave the company? Was it a sign that it was time to start your own business?

R.S.: There was only one reason. At a certain point, I realized that I had gained enough knowledge and experience to build my own business. While working at the company, I also completed an Executive MBA (EMBA) program, which gave me additional confidence in my abilities. At the same time, certain differences in vision began to emerge between the company’s owners and myself. But, as they say, everything happens for the best.

Eventually, I made the decision to establish my own business and register the WinStyle trademark. For more than ten years now, we have remained at the forefront of the window industry, specializing in components for insulating glass unit manufacturing.

WT: What is WinStyle today? How is the company structured?

R.S.: Over the past decade, we have faced numerous challenges—currency fluctuations, changes in suppliers, market restructuring, and many others. However, today I can confidently say that WinStyle has become a strong trading company with a well-balanced portfolio of products for the insulating glass manufacturing industry.

We do not sell window profile systems, hardware, or glass. Instead, we specialize in understanding the needs of companies that manufacture insulating glass units. As we all know, besides glass itself, an insulating glass unit consists of many equally important components, including sealants, spacer bars, molecular sieves (desiccants), connectors, corner keys, decorative inserts, and various accessories.

WinStyle offers a comprehensive range of both primary and auxiliary products for manufacturers of all sizes. Our portfolio includes essential production materials such as cleaning paper, cork pads, technical fluids, hand tools, and many other consumables.

In addition, we provide our customers with complete solutions for sourcing, purchasing, and commissioning insulating glass manufacturing equipment. We place particular emphasis on secondary sealing extruders used for processing and applying the JOD-32 polyurethane sealant.

WT: Which brands have you ultimately chosen to represent?

R.S.: The market is constantly evolving and developing at a rapid pace. To grow alongside it, remain competitive, and meet our customers’ expectations, we continuously search for new products, technologies, and innovative solutions.

Drawing on many years of experience, we have built a portfolio of key brands that we are successfully developing in the Ukrainian market today:

Sealants: Gran Polychem (JOD-32), Tigerm, WS-PS, TKK, Erpasan, GP 900, GP 1000, WinSil.

Spacer Bars: Winspacer, Profilglass, Swisspacer, Chromatech Ultra (Alu Pro).

Molecular Sieves (Desiccants): Zibo Natergy, Winmol.

These products form the foundation of our portfolio today. Some of them are supplied under our own private label. Before carrying the WinStyle trademark, every product undergoes extensive testing and years of quality verification to ensure it meets our standards.

WT: Our magazine recently featured an advertisement for your new product with the intriguing name JOD-32. Could you tell us more about it?

R.S.: Oh, I have quite a romantic story connected with this product (laughs). At least, that’s how it began.

About five years ago, on a beautiful spring day—March 8th—we met someone in Lviv who introduced us to a sealant produced by a little-known company at the time. After testing the product, we were pleasantly surprised by its quality.

It turned out to be manufactured by Gran Polychem, a newly established Polish factory built virtually from the ground up with European investment and based on modern European technologies. The plant produced a completely new sealant using an innovative mercury-free formulation.

We became one of Gran Polychem’s first partners and introduced the product to the Ukrainian market. Over the years, we worked closely with the manufacturer and our customers to continuously improve the sealant, refining its performance until it reached the highest standards. We spent hundreds of hours in production facilities perfecting the product, and our efforts paid off.

The result was a truly high-quality sealant.

In 2017, new European regulations banning the use of mercury in sealant production came into force. As a result, manufacturers across the industry were required to adapt their products to comply with the new standards. Fortunately, we were already one step ahead, as we had been working with mercury-free technology from the very beginning. This allowed us to secure a significant position in the secondary polyurethane sealant market with JOD-32, while substantially increasing our sales.

Within just two years, we captured a considerable share of the polyurethane sealant market.

Everything was progressing successfully until the factory’s investors encountered financial difficulties beyond our control, forcing the production facility to cease operations.

What do you do when you have a proven formula, established relationships with raw material suppliers, and complete manufacturing expertise—but no production facility of your own?

The answer was obvious: build our own factory.

As a result, Gran Polychem officially launched its manufacturing facility in Ukraine in September 2018.

In the previous issue of your magazine, we already introduced our flagship product in detail—the JOD-32 secondary polyurethane sealant for insulating glass units, featuring an enhanced formula.

WT: To conclude our interview, how would you describe 2018 for WinStyle, and what were your expectations for 2019?

R.S.: 2018 was both a challenging and a milestone year for our company.

It was the year we celebrated the tenth anniversary of the WinStyle brand, welcomed new customers, increased our sales volumes, and further strengthened our position in the market.

In our industry, a comprehensive approach is essential. Customers expect not only high-quality products but also a complete range of related materials and services. Since we had to temporarily suspend sales of our secondary polyurethane sealant, some customers inevitably turned to alternative suppliers. However, we firmly believe this is only temporary. When a product truly delivers superior quality, customers always come back—and we will do everything possible to earn that trust once again.

According to our estimates, the Ukrainian market produces approximately 12 million square meters of insulating glass units annually. Based on various industry assessments, the market declined by around 10–15% in 2018 compared with 2017. Therefore, we did not expect any significant market growth in 2019.

As for WinStyle, we are very satisfied with the results we achieved in 2018 and entered 2019 with ambitious plans for further growth and development.

The post Roman Sandulyak: Interview for Window Technologies Magazine appeared first on WinStyle.