Small Density Butyl Hot Melt Sealant Manufacturers, Suppliers

Product Description

Overview:

The Small Density Butyl Hot Melt Sealant is a lightweight, high-performance sealing material designed for applications requiring reduced mass without compromising sealing efficiency or durability. Formulated with refined butyl rubber and select resins, this hot melt sealant delivers excellent adhesion, flexibility, and resistance to environmental factors while being notably lighter in weight than conventional butyl sealants. It is particularly well-suited for applications where material weight must be minimized, such as in the automotive, aerospace, and electronics industries.

By offering a lower density, this product helps manufacturers reduce the total material load while maintaining strong sealing integrity, making it an ideal solution for energy-saving, lightweight system design, and eco-conscious production.

Key Features:

Lightweight Formula: Reduced density (typically around 1.0–1.2 g/cm³) helps minimize overall product weight, especially beneficial in weight-sensitive industries.

Strong Bonding Power: Offers reliable adhesion to substrates including plastic, aluminum, glass, galvanized steel, and composites.

Excellent Aging Resistance: Withstands thermal cycles, UV exposure, and moisture without cracking or degrading.

Thermoplastic Flexibility: Maintains flexibility over a wide temperature range, preventing brittle failure in cold or hot conditions.

Low Volatility & Safe Use: Contains no solvents or volatile organic compounds (VOCs), making it environmentally safe.

Smooth Processing: Easy to apply using standard hot melt systems, with consistent extrusion and flow properties.

Permanent Tackiness: Non-curing formula allows for continued pliability, perfect for adjustable or removable applications.

Technical Specifications:

Base Material: Butyl rubber + lightweight synthetic resin

Density: 1.0–1.2 g/cm³

Color: Light gray, black, or customized

Softening Point: 90–110°C

Application Temperature: 140–180°C

Working Temperature Range: -40°C to +90°C

Packaging Options: 5kg/10kg blocks or 25kg cartons

Shelf Life: 12 months in original packaging

Applications:

Automotive Components: Used for sealing headlights, tail lights, and interior panels where weight reduction is critical.

Electronics: Ideal for sealing lightweight casings, connectors, or moisture-sensitive parts without adding bulk.

Construction Panels: Used in composite panels or curtain walls to reduce overall structural load.

Aerospace and Transportation: Supports reduced fuel consumption by contributing to lighter system weight while maintaining airtight seals.

Home Appliances: Used in lighter plastic casings and insulation components to prevent air and water ingress.

Application Method:

Surface Preparation: Ensure surfaces are clean, dry, and free of oil, rust, and dust.

Heating: Preheat the butyl hot melt sealant in a hot melt applicator to 140–180°C.

Extrusion: Apply using automated or manual extrusion equipment with consistent pressure and flow control.

Bonding: Press the two surfaces together before the sealant cools and solidifies.

Storage & Handling:

Store in a cool, ventilated area below 25°C.

Protect from direct sunlight, moisture, and open flame.

Wear gloves when handling hot material to avoid burns.

Keep sealed until ready to use to avoid contamination.

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.

Small Density Butyl Hot Melt Sealant

FAQ – Frequently Asked Questions

Q1: What does "small density" mean in this product?

A: “Small density” refers to the reduced weight of the sealant compared to standard formulations. It’s ideal for applications where reducing product weight is essential, such as automotive or aerospace industries.

Q2: Will a lower density affect sealing strength?

A: No, the formulation is engineered to retain excellent sealing performance while minimizing mass. It still provides strong adhesion and environmental resistance.

Q3: Is this sealant reusable after cooling?

A: Yes, it can be reheated and reused as long as it has not been contaminated during application or storage.

Q4: Is it safe for use in enclosed environments?

A: Yes, the product is solvent-free and emits no VOCs, making it suitable for indoor or enclosed area applications.

Q5: How is it different from regular butyl hot melt sealant?

A: The primary difference is in weight—small density sealant is significantly lighter, allowing for better energy efficiency and reduced transport costs without sacrificing performance.

Q6: Can it be used for outdoor sealing jobs?

A: Yes, it resists UV light, heat, and moisture, making it suitable for both indoor and outdoor applications.

Q7: Does it require any primer before application?

A: Generally, no primer is needed on clean, dry surfaces, though adhesion testing is always recommended for new materials.

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.