Reactive Thermoplastic Spacer Sealant With Ultra-Low Water Vapor Transmission Rate

The Reactive Thermoplastic Spacer Sealant With Ultra-Low Water Vapor Transmission Rate is a premium-grade, multi-functional spacer sealant designed for insulating glass units (IGUs) that demand the highest levels of durability, energy efficiency, and moisture resistance. 

Send Inquiry

Product Description

The Reactive Thermoplastic Spacer Sealant With Ultra-Low Water Vapor Transmission Rate is a premium-grade, multi-functional spacer sealant designed for insulating glass units (IGUs) that demand the highest levels of durability, energy efficiency, and moisture resistance. Engineered with a reactive thermoplastic base, this sealant serves as both the spacer and primary seal, delivering seamless adhesion, long-term flexibility, and outstanding barrier properties.

What sets this product apart is its ultra-low water vapor transmission rate (WVTR), ensuring minimal moisture penetration over decades. This performance prevents fogging and deterioration of gas-filled IGUs, supporting energy conservation and product longevity. Ideal for warm-edge spacer systems, this material is designed for modern automated IGU production, offering easy processing and reliable sealing performance.

 

Product Feature And Application

Henan Chengxin collected a large number of external adhesive products and tested the tensile bonding of CX-TPSS-R with external adhesive and glass. After testing, CX-TPSS-R can produce good chemical bonding with most external adhesives and glass on the market; Henan Chengxin carried out high temperature (90°C) and low temperature (-60°C) tensile bonding performance tests on CX-TPSS-R insulating glass. After testing, CX-TPSS-R insulating glass still maintains its excellent performance in harsh environments; The company has extensively tested the thermoplasticity and initial bonding performance of CX-TPSS-R to verify the initial bonding performance of CX-TPSS-R and glass and the droop of the molded spacer. After testing, when the width of the CX-TPSS-R adhesive strip is 22mm, the droop is still less than 1mm

Mainly used in the production of high energy-saving insulating glass.

Product performance

1. Appearance: fine and smooth, no cracking, powdering, and loss of viscosity:

2. Odor: meets environmental protection requirements and has no odor. 3. Strong aging resistance; 4. Rigid support and certain resilience.

5. Extrusion temperature: 110-140℃.

6. Shear strength: ≥0.40MPa.

7. Water vapor permeability: <0.20g/(m°.d)

8. Moisture adsorption rate: ≥0.35%.

 

Product Details

Reactive Thermoplastic Spacer Sealant With Ultra-Low Water Vapor Transmission RateReactive Thermoplastic Spacer Sealant With Ultra-Low Water Vapor Transmission Rate

 

 

Deliver,Shipping And Serving

1. Online testing

Online testing will be carried out before the finished product is packaged, and the finished product will be packaged only after it meets the relevant requirements.

2. Quality control supervision.

Quality control will be carried out again before the finished product packaging is put into storage and enters the market.

3. Application testing

Carry out full product testing, from the user's perspective, restore the product application scenario, and test its application.

4. Technical service

Application technical service provides high-quality technical services. After the product enters the market, after-sales technical service will continue to track the product usage and provide high-quality after-sales service.

Reactive Thermoplastic Spacer Sealant With Ultra-Low Water Vapor Transmission Rate       Reactive Thermoplastic Spacer Sealant With Ultra-Low Water Vapor Transmission Rate

 

FAQ (Frequently Asked Questions)

Q1: Why is ultra-low water vapor transmission rate important in IGUs?

A1: Low WVTR prevents moisture from entering the unit, which helps avoid internal condensation, fogging, and degradation of insulating performance over time.

Q2: What’s the difference between this and traditional spacer systems?

A2: Traditional systems use metal spacers with multiple sealants. This sealant acts as both spacer and primary seal, simplifying production, enhancing insulation, and improving edge-seal performance.

Q3: Will this sealant cure or harden over time?

A3: No. It remains flexible and thermoplastic over its lifespan. However, its reactive bonding forms a strong chemical interface with glass surfaces.

Q4: Can this be used in triple-glazed units?

A4: Yes. It’s especially effective in triple-glazing applications where durability, low moisture ingress, and long-term gas retention are essential.

Q5: Is a secondary sealant required?

A5: While the spacer sealant offers strong barrier properties, applying a secondary sealant (typically silicone or polyurethane) ensures enhanced structural and weather resistance.

Q6: Is this product safe for indoor environments?

A6: Yes. It is solvent-free and VOC-free, making it safe for use in production facilities and compliant with indoor air quality standards.

Q7: What kind of production equipment is required?

A7: It is compatible with most hot-melt spacer applicators used in IGU lines. No special curing equipment is needed—just accurate temperature control and clean substrate surfaces.

 

Company Profile

Chengxin (Henan) Sealing New Material Tech Co., Ltd. is a Chinese manufacturer and supplier of insulating glass sealing materials. We have been professionally focusing on the sealing material industry for many years. With excellent product quality and a complete market service guarantee system, the company has formed a wide sales network in China. In the international market, "Chengxin" brand series products have been exported to Western Europe, America, the Middle East, Africa, Southeast Asia and other countries and regions. We look forward to becoming your long-term partner.

Related Category

Send Inquiry

For inquiries about our products or pricelist, please leave your email to us and we will be in touch within 24 hours.
Verify Code